/usr/lib/lazarus/0.9.30.4/lcl/comctrls.pp is in lazarus-src-0.9.30.4 0.9.30.4-6.
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{
/***************************************************************************
ComCtrls.pp
-----------
Component Library Common Controls
Initial Revision : Sat Apr 10 22:49:32 CST 1999
***************************************************************************/
*****************************************************************************
* *
* This file is part of the Lazarus Component Library (LCL) *
* *
* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
* for details about the copyright. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* *
*****************************************************************************
}
{
@abstract(Just a try to provide the same objects as the Delphi comctrls unit)
@author(TCustomProgressBar - Stefan Hille <stoppok@osibisa.ms.sub.org>)
@author(TTrackBar - Stefan Hille <stoppok@osibisa.ms.sub.org>)
@created(1999)
@lastmod(1999)
}
unit ComCtrls;
{$mode objfpc}{$H+}
{$I lcl_defines.inc}
interface
uses
SysUtils, Types, Classes, Math, LCLStrConsts, LResources, LCLIntf, LCLType,
FileUtil, LCLProc, AvgLvlTree, LMessages, ImgList, ActnList, GraphType,
Graphics, Menus, Controls, Forms, StdCtrls, ExtCtrls, ToolWin, Buttons,
Themes;
type
THitTest = (htAbove, htBelow, htNowhere, htOnItem, htOnButton, htOnIcon,
htOnIndent, htOnLabel, htOnRight, htOnStateIcon, htToLeft, htToRight);
THitTests = set of THitTest;
TStatusPanelStyle = (psText, psOwnerDraw);
TStatusPanelBevel = (pbNone, pbLowered, pbRaised);
TStatusBar = class; //forward declaration
TPanelPart = (
ppText, // for text and text alignment
ppBorder, // for bevel and style
ppWidth // for width
);
TPanelParts = set of TPanelPart;
{ TStatusPanel }
//added.
TStatusPanelClass = class of TStatusPanel;
TStatusPanel = class(TCollectionItem)
private
FText: TCaption;
FWidth: Integer;
FAlignment: TAlignment;
FBevel: TStatusPanelBevel;
FParentBiDiMode: Boolean;
FStyle: TStatusPanelStyle;
procedure SetAlignment(Value: TAlignment);
procedure SetBevel(Value: TStatusPanelBevel);
procedure SetStyle(Value: TStatusPanelStyle);
procedure SetText(const Value: TCaption);
procedure SetWidth(Value: Integer);
protected
// field to use by interface. do not use it in the LCL
FIntfFlag: Integer;
function GetDisplayName: string; override;
procedure PanelChanged(const Parts: TPanelParts);
procedure SetIndex(Value: Integer); override;
public
constructor Create(ACollection: TCollection); override;
destructor Destroy; override;
procedure Assign(Source: TPersistent); override;
function StatusBar: TStatusBar;
published
property Alignment: TAlignment read FAlignment write SetAlignment default taLeftJustify;
property Bevel: TStatusPanelBevel read FBevel write SetBevel default pbLowered;
property Style: TStatusPanelStyle read FStyle write SetStyle default psText;
property Text: TCaption read FText write SetText;
property Width: Integer read FWidth write SetWidth;
end;
TStatusPanels = class(TCollection)
private
FStatusBar: TStatusBar;
function GetItem(Index: Integer): TStatusPanel;
procedure SetItem(Index: Integer; Value: TStatusPanel);
protected
function GetOwner: TPersistent; override;
procedure Update(Item: TCollectionItem); override;
public
constructor Create(AStatusBar: TStatusBar);
function Add: TStatusPanel;
property Items[Index: Integer]: TStatusPanel read GetItem write SetItem; default;
property StatusBar: TStatusBar read FStatusBar;
end;
TSBCreatePanelClassEvent = procedure(Sender: TStatusBar;
var PanelClass: TStatusPanelClass) of object;
TDrawPanelEvent = procedure(StatusBar: TStatusBar; Panel: TStatusPanel;
const Rect: TRect) of object;
{ TStatusBar }
TStatusBar = class(TWinControl)
private
FAutoHint: Boolean;
FCanvas: TCanvas;
FHandlePanelCount: integer; // realized panels in the Handle object
FHandleObjectNeedsUpdate: boolean;
FHandleUpdatePanelIndex: integer; // which panel in the handle object needs update
FOnCreatePanelClass: TSBCreatePanelClassEvent;
FSizeGrip: Boolean;
FUpdateLock: integer; // set by BeginUpdate/EndUpdate
FPanels: TStatusPanels;
FSimpleText: TCaption;
FSimplePanel: Boolean;
FOnDrawPanel: TDrawPanelEvent;
FOnHint: TNotifyEvent;
procedure SetPanels(Value: TStatusPanels);
procedure SetSimpleText(const Value : TCaption);
procedure SetSimplePanel(Value : Boolean);
procedure SetSizeGrip(const AValue: Boolean);
protected
class procedure WSRegisterClass; override;
procedure BoundsChanged; override;
procedure CreateWnd; override;
procedure DestroyWnd; override;
procedure Loaded; override;
procedure UpdateHandleObject(PanelIndex: integer; PanelParts: TPanelParts); virtual;
procedure CalculatePreferredSize(
var PreferredWidth, PreferredHeight: integer;
WithThemeSpace: Boolean); override;
//added.
function CreatePanel: TStatusPanel; virtual;
function CreatePanels: TStatusPanels; virtual;
function GetPanelClass: TStatusPanelClass; virtual;
function DoSetApplicationHint(AHintStr: String): Boolean; virtual;
function DoHint: Boolean; virtual;
procedure DrawPanel(Panel: TStatusPanel; const Rect: TRect); virtual;
procedure LMDrawItem(var Message: TLMDrawItems); message LM_DRAWITEM;
public
constructor Create(TheOwner: TComponent); override;
destructor Destroy; override;
procedure InvalidatePanel(PanelIndex: integer; PanelParts: TPanelParts); virtual;
procedure BeginUpdate;
procedure EndUpdate;
function ExecuteAction(ExeAction: TBasicAction): Boolean; override;
function GetPanelIndexAt(X, Y: Integer): Integer;
function SizeGripEnabled: Boolean;
function UpdatingStatusBar: boolean;
property Canvas: TCanvas read FCanvas;
published
property Action;
property Align default alBottom;
property Anchors;
property AutoHint: Boolean read FAutoHint write FAutoHint default false;
property AutoSize default true;
property BorderSpacing;
property Color default {$ifdef UseCLDefault}clDefault{$else}clBtnFace{$endif};
property Constraints;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property Panels: TStatusPanels read FPanels write SetPanels;
property ParentShowHint;
property SimpleText: TCaption read FSimpleText write SetSimpleText;
property SimplePanel: Boolean read FSimplePanel write SetSimplePanel default True;
property SizeGrip: Boolean read FSizeGrip write SetSizeGrip default True;
property ShowHint;
property Visible default true;
property OnClick;
property OnContextPopup;
property OnCreatePanelClass: TSBCreatePanelClassEvent read FOnCreatePanelClass write FOnCreatePanelClass;
property OnDblClick;
property OnDragDrop;
property OnDragOver;
property OnDrawPanel: TDrawPanelEvent read FOnDrawPanel write FOnDrawPanel;
property OnEndDock;
property OnEndDrag;
property OnHint: TNotifyEvent read FOnHint write FOnHint;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnResize;
property OnStartDock;
property OnStartDrag;
end;
{ TTabSheet }
TPageControl = class;
// TTabPosition is in extctrls.pas
TTabStyle = (tsTabs, tsButtons, tsFlatButtons);
{ TTabSheet }
TTabSheet = class(TCustomPage)
private
function GetPageControl: TPageControl;
function GetTabIndex: Integer;
procedure SetPageControl(APageControl: TPageControl);
protected
class procedure WSRegisterClass; override;
public
constructor Create(TheOwner: TComponent); override;
destructor Destroy; override;
property PageControl: TPageControl read GetPageControl write SetPageControl;
property TabIndex: Integer read GetTabIndex;
published
property Caption;
property ChildSizing;
property ClientHeight;
property ClientWidth;
property Enabled;
property Font;
property Height stored False;
property ImageIndex default 0;
property Left stored False;
property OnContextPopup;
property OnDragDrop;
property OnDragOver;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnHide;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnResize;
property OnShow;
property OnStartDrag;
property PageIndex stored False;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property ShowHint;
property TabVisible default True;
property Top stored False;
property Visible stored False;
property Width stored False;
end;
{ TPageControl }
TPageControl = class(TCustomNotebook)
private
FPageToUndock: TTabSheet;
FOnChange: TNotifyEvent;
function GetActivePageIndex: Integer;
function GetActiveTabSheet: TTabSheet;
function GetTabIndex: Integer;
function GetTabSheet(Index: Integer): TTabSheet;
procedure SetActivePageIndex(const AValue: Integer);
procedure SetActiveTabSheet(const AValue: TTabSheet);
procedure SetTabIndex(const AValue: Integer);
function FindPageWithDockClient(Client: TControl): TTabSheet;
protected
class procedure WSRegisterClass; override;
procedure DoAddDockClient(Client: TControl; const ARect: TRect); override;
procedure DockOver(Source: TDragDockObject; X, Y: Integer;
State: TDragState; var Accept: Boolean); override;
procedure DoRemoveDockClient(Client: TControl); override;
function DoUndockClientMsg(NewTarget, Client: TControl):boolean; override;
procedure DoChange; override;
public
constructor Create(TheOwner: TComponent); override;
function FindNextPage(CurPage: TTabSheet;
GoForward, CheckTabVisible: Boolean): TTabSheet;
procedure SelectNextPage(GoForward: Boolean);
procedure SelectNextPage(GoForward: Boolean; CheckTabVisible: Boolean);
property ActivePageIndex: Integer read GetActivePageIndex
write SetActivePageIndex;
property Pages[Index: Integer]: TTabSheet read GetTabSheet;
published
property ActivePage: TTabSheet read GetActiveTabSheet write SetActiveTabSheet;
property OnGetDockCaption;
property Align;
property Anchors;
property BorderSpacing;
//property BiDiMode;
property Constraints;
property DockSite;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property Font;
//property HotTrack;
property Images;
property MultiLine;
//property OwnerDraw;
//property ParentBiDiMode;
property ParentFont;
property ParentShowHint;
property PopupMenu;
//property RaggedRight;
//property ScrollOpposite;
property ShowHint;
property ShowTabs;
//property Style;
//property TabHeight;
property TabIndex: Integer read GetTabIndex write SetTabIndex default -1;
property TabOrder;
property TabPosition;
property TabStop;
//property TabWidth;
property Visible;
property OnChange: TNotifyEvent read FOnChange write FOnChange;
property OnChanging;
property OnCloseTabClicked;
property OnContextPopup;
property OnDockDrop;
property OnDockOver;
property OnDragDrop;
property OnDragOver;
//property OnDrawTab;
property OnEndDock;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnGetImageIndex;
property OnGetSiteInfo;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnPageChanged;
property OnResize;
property OnStartDock;
property OnStartDrag;
property OnUnDock;
property Options;
end;
TCustomTabControl = class;
{ TTabControlStrings }
TTabControlStrings = class(TStrings)
private
FHotTrack: Boolean;
FImages: TCustomImageList;
FMultiLine: Boolean;
FMultiSelect: Boolean;
FOwnerDraw: Boolean;
FRaggedRight: Boolean;
FScrollOpposite: Boolean;
FTabControl: TCustomTabControl;
FTabHeight: Smallint;
FTabWidth: Smallint;
FUpdateCount: integer;
protected
function GetTabIndex: integer; virtual; abstract;
procedure SetHotTrack(const AValue: Boolean); virtual;
procedure SetImages(const AValue: TCustomImageList); virtual;
procedure SetMultiLine(const AValue: Boolean); virtual;
procedure SetMultiSelect(const AValue: Boolean); virtual;
procedure SetOwnerDraw(const AValue: Boolean); virtual;
procedure SetRaggedRight(const AValue: Boolean); virtual;
procedure SetScrollOpposite(const AValue: Boolean); virtual;
procedure SetTabHeight(const AValue: Smallint); virtual;
procedure SetTabIndex(const AValue: integer); virtual; abstract;
procedure SetTabWidth(const AValue: Smallint); virtual;
public
constructor Create(TheTabControl: TCustomTabControl); virtual;
function GetHitTestInfoAt(X, Y: Integer): THitTests; virtual;
function GetSize: integer; virtual; abstract;
function IndexOfTabAt(X, Y: Integer): Integer; virtual;
function RowCount: Integer; virtual;
function TabRect(Index: Integer): TRect; virtual;
procedure ImageListChange(Sender: TObject); virtual;
procedure ScrollTabs(Delta: Integer); virtual;
procedure TabControlBoundsChange; virtual;
procedure UpdateTabImages; virtual;
procedure BeginUpdate; virtual;
procedure EndUpdate; virtual;
function IsUpdating: boolean; virtual;
public
property TabControl: TCustomTabControl read FTabControl;
property TabIndex: integer read GetTabIndex write SetTabIndex;
property HotTrack: Boolean read FHotTrack write SetHotTrack;
property Images: TCustomImageList read FImages write SetImages;
property MultiLine: Boolean read FMultiLine write SetMultiLine;
property MultiSelect: Boolean read FMultiSelect write SetMultiSelect;
property OwnerDraw: Boolean read FOwnerDraw write SetOwnerDraw;
property RaggedRight: Boolean read FRaggedRight write SetRaggedRight;
property ScrollOpposite: Boolean read FScrollOpposite
write SetScrollOpposite;
property TabHeight: Smallint read FTabHeight write SetTabHeight;
property TabWidth: Smallint read FTabWidth write SetTabWidth;
end;
{ TTabControlNoteBookStrings }
TTabControlNoteBookStrings = class(TTabControlStrings)
private
FNoteBook: TNoteBook{%H-};
protected
function Get(Index: Integer): string; override;
function GetCount: Integer; override;
function GetObject(Index: Integer): TObject; override;
function GetTabIndex: integer; override;
procedure NBChanging(Sender: TObject; var AllowChange: Boolean); virtual;
procedure NBGetImageIndex(Sender: TObject; TheTabIndex: Integer;
var ImageIndex: Integer); virtual;
procedure NBPageChanged(Sender: TObject); virtual;
procedure Put(Index: Integer; const S: string); override;
procedure PutObject(Index: Integer; AObject: TObject); override;
procedure SetImages(const AValue: TCustomImageList); override;
procedure SetTabIndex(const AValue: integer); override;
procedure SetUpdateState(Updating: Boolean); override;
procedure SetTabHeight(const AValue: Smallint); override;
procedure SetTabWidth(const AValue: Smallint); override;
public
constructor Create(TheTabControl: TCustomTabControl); override;
destructor Destroy; override;
procedure Clear; override;
procedure Delete(Index: Integer); override;
procedure Insert(Index: Integer; const S: string); override;
function GetSize: integer; override;
procedure TabControlBoundsChange; override;
function IndexOfTabAt(X, Y: Integer): Integer; override;
public
property NoteBook: TNoteBook read FNoteBook;
end;
{ TCustomTabControl }
TDrawTabEvent = procedure(Control: TCustomTabControl; TabIndex: Integer;
const Rect: TRect; Active: Boolean) of object;
TCustomTabControl = class(TCustomControl)
private
FImageChangeLink: TChangeLink;
FImages: TCustomImageList;
FOnChange: TNotifyEvent;
FOnChangeNeeded: Boolean;
FOnChanging: TTabChangingEvent;
FOnDrawTab: TDrawTabEvent;
FOnGetImageIndex: TTabGetImageEvent;
FStyle: TTabStyle;
FTabControlCreating: Boolean;
FTabPosition: TTabPosition;
FTabs: TStrings;// this is a TTabControlNoteBookStrings
procedure AdjustDisplayRect(var ARect: TRect);
function GetDisplayRect: TRect;
function GetHotTrack: Boolean;
function GetMultiLine: Boolean;
function GetMultiSelect: Boolean;
function GetOwnerDraw: Boolean;
function GetRaggedRight: Boolean;
function GetScrollOpposite: Boolean;
function GetTabHeight: Smallint;
function GetTabIndex: Integer;
function GetTabRectWithBorder: TRect;
function GetTabWidth: Smallint;
procedure SetHotTrack(const AValue: Boolean);
procedure SetImages(const AValue: TCustomImageList);
procedure SetMultiLine(const AValue: Boolean);
procedure SetMultiSelect(const AValue: Boolean);
procedure SetOwnerDraw(const AValue: Boolean);
procedure SetRaggedRight(const AValue: Boolean);
procedure SetScrollOpposite(const AValue: Boolean);
procedure SetStyle(const AValue: TTabStyle);
procedure SetTabHeight(const AValue: Smallint);
procedure SetTabPosition(const AValue: TTabPosition);
procedure SetTabs(const AValue: TStrings);
procedure SetTabWidth(const AValue: Smallint);
protected
function CanChange: Boolean; virtual;
function CanShowTab(ATabIndex: Integer): Boolean; virtual;
procedure Change; virtual;
procedure DrawTab(ATabIndex: Integer; const Rect: TRect; Active: Boolean); virtual;
function GetImageIndex(ATabIndex: Integer): Integer; virtual;
procedure Loaded; override;
procedure CreateWnd; override;
procedure DestroyHandle; override;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure SetTabIndex(Value: Integer); virtual;
procedure UpdateTabImages;
procedure ImageListChange(Sender: TObject);
procedure DoSetBounds(ALeft, ATop, AWidth, AHeight: integer); override;
class function GetControlClassDefaultSize: TSize; override;
procedure Paint; override;
procedure AdjustDisplayRectWithBorder(var ARect: TRect); virtual;
procedure AdjustClientRect(var ARect: TRect); override;
protected
property DisplayRect: TRect read GetDisplayRect;
property HotTrack: Boolean read GetHotTrack write SetHotTrack default False;
property Images: TCustomImageList read FImages write SetImages;
property MultiLine: Boolean read GetMultiLine write SetMultiLine default False;
property MultiSelect: Boolean read GetMultiSelect write SetMultiSelect default False;
property OnChange: TNotifyEvent read FOnChange write FOnChange;
property OnChanging: TTabChangingEvent read FOnChanging write FOnChanging;
property OnDrawTab: TDrawTabEvent read FOnDrawTab write FOnDrawTab;
property OnGetImageIndex: TTabGetImageEvent read FOnGetImageIndex
write FOnGetImageIndex;
property OwnerDraw: Boolean read GetOwnerDraw write SetOwnerDraw default False;
property RaggedRight: Boolean read GetRaggedRight write SetRaggedRight default False;
property ScrollOpposite: Boolean read GetScrollOpposite
write SetScrollOpposite default False;
property Style: TTabStyle read FStyle write SetStyle default tsTabs;
property TabHeight: Smallint read GetTabHeight write SetTabHeight default 0;
property TabPosition: TTabPosition read FTabPosition write SetTabPosition
default tpTop;
property TabWidth: Smallint read GetTabWidth write SetTabWidth default 0;
public
constructor Create(TheOwner: TComponent); override;
destructor Destroy; override;
function IndexOfTabAt(X, Y: Integer): Integer;
function GetHitTestInfoAt(X, Y: Integer): THitTests;
function IndexOfTabWithCaption(const TabCaption: string): Integer;
function TabRect(Index: Integer): TRect;
function RowCount: Integer;
procedure ScrollTabs(Delta: Integer);
procedure BeginUpdate;
procedure EndUpdate;
function IsUpdating: boolean;
property TabIndex: Integer read GetTabIndex write SetTabIndex default -1;
property Tabs: TStrings read FTabs write SetTabs;
public
property TabStop default True;
end;
{ TTabControl }
TTabControl = class(TCustomTabControl)
public
property DisplayRect;
published
property Align;
property Anchors;
property BorderSpacing;
property Constraints;
property DockSite;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property Font;
property HotTrack;
property Images;
property MultiLine;
property MultiSelect;
property OnChange;
property OnChangeBounds;
property OnChanging;
property OnContextPopup;
property OnDockDrop;
property OnDockOver;
property OnDragDrop;
property OnDragOver;
property OnDrawTab;
property OnEndDock;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnGetImageIndex;
property OnGetSiteInfo;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnResize;
property OnStartDock;
property OnStartDrag;
property OnUnDock;
property OwnerDraw;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property RaggedRight;
property ScrollOpposite;
property ShowHint;
property Style;
property TabHeight;
property TabIndex;
property TabOrder;
property TabPosition;
property Tabs;
property TabStop;
property TabWidth;
property Visible;
end;
{ Custom draw }
TCustomDrawTarget = (
dtControl, // the whole control
dtItem, // one item (= line in report mode)
dtSubItem // one subitem, except for subitem 0, this one is drawn by dtItem
);
TCustomDrawStage = (
cdPrePaint,
cdPostPaint,
cdPreErase,
cdPostErase
);
TCustomDrawStateFlag = (
cdsSelected,
cdsGrayed,
cdsDisabled,
cdsChecked,
cdsFocused,
cdsDefault,
cdsHot,
cdsMarked,
cdsIndeterminate
);
TCustomDrawState = set of TCustomDrawStateFlag;
TCustomDrawResultFlag = (
cdrSkipDefault,
cdrNotifyPostpaint,
cdrNotifyItemdraw,
cdrNotifySubitemdraw,
cdrNotifyPosterase,
cdrNotifyItemerase
);
TCustomDrawResult = set of TCustomDrawResultFlag;
{ TListView }
TListItems = class; //forward declaration!
TCustomListView = class; //forward declaration!
TSortType = (stNone, stData, stText, stBoth);
TListItemState = (lisCut, lisDropTarget, lisFocused, lisSelected);
TListItemStates = set of TListItemState;
TListItemFlag = (lifDestroying, lifCreated);
TListItemFlags = set of TListItemFlag;
TDisplayCode = (drBounds, drIcon, drLabel, drSelectBounds);
{ TIconOptions }
TIconArrangement = (iaTop, iaLeft);
TIconOptions = class(TPersistent)
private
FListView: TCustomListView;
FArrangement: TIconArrangement;
function GetAutoArrange: Boolean;
function GetWrapText: Boolean;
procedure SetArrangement(Value: TIconArrangement);
procedure SetAutoArrange(Value: Boolean);
procedure SetWrapText(Value: Boolean);
protected
procedure AssignTo(Dest: TPersistent); override;
function GetOwner: TPersistent; override;
public
constructor Create(AOwner: TCustomListView);
published
property Arrangement: TIconArrangement read FArrangement write SetArrangement default iaTop;
property AutoArrange: Boolean read GetAutoArrange write SetAutoArrange default False;
property WrapText: Boolean read GetWrapText write SetWrapText default True;
end;
{ TListItem }
TListItem = class(TPersistent)
private
FOwner: TListItems;
FFlags: TListItemFlags;
FSubItems: TStrings;
FCaption: String;
FData: Pointer;
FImageIndex: TImageIndex;
FStateIndex: TImageIndex;
FStates: TListItemStates;
FChecked: Boolean;
function GetCaption: String; virtual;
function GetChecked: Boolean;
function GetLeft: Integer;
function GetListView: TCustomListView;
function GetPosition: TPoint;
function GetState(const ALisOrd: Integer): Boolean;
function GetImageIndex: TImageIndex; virtual;
function GetIndex: Integer; virtual;
function GetStateIndex: TImageIndex; virtual;
function GetSubItemImages(const AIndex: Integer): Integer;
function GetSubItems: TStrings; virtual;
function GetTop: Integer;
function WSUpdateAllowed: Boolean;
procedure WSUpdateText;
procedure WSUpdateImages;
procedure WSUpdateChecked;
procedure WSSetState;
procedure WSUpdateState;
procedure SetChecked(AValue: Boolean);
procedure SetState(const ALisOrd: Integer; const AIsSet: Boolean);
procedure SetData(const AValue: Pointer);
procedure SetImageIndex(const AValue: TImageIndex); virtual;
procedure SetLeft(Value: Integer);
procedure SetCaption(const AValue : String); virtual;
procedure SetPosition(const AValue: TPoint);
procedure SetStateIndex(const AValue: TImageIndex); virtual;
procedure SetSubItemImages(const AIndex, AValue: Integer);
procedure SetSubItems(const AValue: TStrings);
procedure SetTop(Value: Integer);
protected
function IsEqual(const AItem: TListItem): Boolean;
function GetCheckedInternal: Boolean;
function GetOwner: TPersistent; override;
public
procedure Assign(ASource: TPersistent); override;
constructor Create(AOwner: TListItems);
destructor Destroy; override;
procedure Delete;
procedure MakeVisible(PartialOK: Boolean);
function DisplayRect(Code: TDisplayCode): TRect;
function DisplayRectSubItem(subItem: integer;Code: TDisplayCode): TRect;
property Caption : String read GetCaption write SetCaption;
property Checked : Boolean read GetChecked write SetChecked;
property Cut: Boolean index Ord(lisCut) read GetState write SetState;
property Data: Pointer read FData write SetData;
property DropTarget: Boolean index Ord(lisDropTarget) read GetState write SetState;
property Focused: Boolean index Ord(lisFocused) read GetState write SetState;
property Index: Integer read GetIndex;
property ImageIndex: TImageIndex read GetImageIndex write SetImageIndex default -1;
property Left: Integer read GetLeft write SetLeft;
property ListView: TCustomListView read GetListView;
property Owner: TListItems read FOwner;
property Position: TPoint read GetPosition write SetPosition;
property Selected: Boolean index Ord(lisSelected) read GetState write SetState;
property StateIndex: TImageIndex read GetStateIndex write SetStateIndex;
property SubItems: TStrings read GetSubItems write SetSubItems;
property SubItemImages[const AIndex: Integer]: Integer read GetSubItemImages write SetSubItemImages;
property Top: Integer read GetTop write SetTop;
end;
{ TOwnerDataListItem }
TOwnerDataListItem = class(TListItem)
private
FDataIndex: Integer;
FCached: Boolean;
function GetCaption: String; override;
function GetIndex: Integer; override;
function GetImageIndex: TImageIndex; override;
procedure SetCaption(const AValue : String); override;
procedure SetImageIndex(const AValue: TImageIndex); override;
function GetSubItems: TStrings; override;
procedure DoCacheItem;
public
procedure SetDataIndex(ADataIndex: Integer);
end;
{ TListItemsEnumerator }
TListItemsEnumerator = class
private
FItems: TListItems;
FPosition: Integer;
function GetCurrent: TListItem;
public
constructor Create(AItems: TListItems);
function MoveNext: Boolean;
property Current: TListItem read GetCurrent;
end;
TListItemsFlag = (lisfWSItemsCreated);
TListItemsFlags = set of TListItemsFlag;
{ TListItems }
{
Listitems have a build in cache of the last accessed item.
This will speed up interface updates since Item.Index is
often used for the same item updating more properties.
If FCacheIndex = -1 then the cache is not valid.
}
TListItems = class(TPersistent)
private
FOwner: TCustomListView;
FItems: TList;
FFlags: TListItemsFlags;
FCacheIndex: Integer; // Caches the last used item
FCacheItem: TListItem; //
procedure WSCreateCacheItem;
function WSUpdateAllowed: Boolean;
procedure WSUpdateItem(const AIndex:Integer; const AValue: TListItem);
procedure WSSetItemsCount(const ACount: Integer);
procedure ItemDestroying(const AItem: TListItem); //called by TListItem when freed
procedure ReadData(Stream: TStream); // read data in a Delphi compatible way
procedure ReadLazData(Stream: TStream); // read data in a 64 bits safe way
procedure WriteLazData(Stream: TStream); // write date in a 64 bits safe way
protected
procedure DefineProperties(Filer: TFiler); override;
function GetCount: Integer;
function GetItem(const AIndex: Integer): TListItem;
function GetOwner: TPersistent; override;
procedure WSCreateItems;
procedure DoFinalizeWnd;
procedure SetCount(const ACount: Integer);
procedure SetItem(const AIndex: Integer; const AValue: TListItem);
public
function Add: TListItem;
procedure AddItem(AItem: TListItem);
procedure BeginUpdate;
procedure Clear;
constructor Create(AOwner : TCustomListView);
destructor Destroy; override;
procedure Delete(const AIndex : Integer);
procedure EndUpdate;
function FindCaption(StartIndex: Integer; Value: string;
Partial, Inclusive, Wrap: Boolean;
PartStart: Boolean = True): TListItem;
function FindData(const AData: Pointer): TListItem;
function GetEnumerator: TListItemsEnumerator;
function IndexOf(const AItem: TListItem): Integer;
function Insert(const AIndex: Integer) : TListItem;
procedure InsertItem(AItem: TListItem; const AIndex: Integer);
property Flags: TListItemsFlags read FFlags;
property Count: Integer read GetCount write SetCount;
property Item[const AIndex: Integer]: TListItem read GetItem write SetItem; default;
property Owner: TCustomListView read FOwner;
end;
{ TListColumn }
TWidth = 0..MaxInt;
TListColumn = class(TCollectionItem)
private
FAlignment: TAlignment;
FAutoSize: Boolean;
FCaption: TTranslateString;
FMinWidth: TWidth;
FMaxWidth: TWidth;
FVisible: Boolean;
FWidth: TWidth;
FImageIndex: TImageIndex;
FTag: Integer;
function GetWidth: TWidth;
procedure WSCreateColumn;
procedure WSDestroyColumn;
function WSUpdateAllowed: Boolean;
function WSReadAllowed: Boolean;
procedure SetVisible(const AValue: Boolean);
procedure SetAutoSize(const AValue: Boolean);
procedure SetMinWidth(const AValue: TWidth);
procedure SetMaxWidth(const AValue: TWidth);
procedure SetWidth(const AValue: TWidth);
procedure SetCaption(const AValue: TTranslateString);
procedure SetAlignment(const AValue: TAlignment);
procedure SetImageIndex(const AValue: TImageIndex);
protected
procedure SetIndex(AValue: Integer); override;
function GetDisplayName: string; override;
function GetStoredWidth: Integer;
public
constructor Create(ACollection: TCollection); override;
destructor Destroy; override;
procedure Assign(ASource: TPersistent); override;
published
property Alignment: TAlignment read FAlignment write SetAlignment default taLeftJustify;
property AutoSize: Boolean read FAutoSize write SetAutoSize default False;
property Caption: TTranslateString read FCaption write SetCaption;
property ImageIndex: TImageIndex read FImageIndex write SetImageIndex default -1;
property MaxWidth: TWidth read FMaxWidth write SetMaxWidth default 0;
property MinWidth: TWidth read FMinWidth write SetMinWidth default 0;
property Tag: Integer read FTag write FTag default 0;
property Visible: Boolean read FVisible write SetVisible default true;
property Width: TWidth read GetWidth write SetWidth default 50;
end;
{ TListColumns }
TListColumns = class(TCollection)
private
FOwner: TCustomListView;
FItemNeedsUpdate: TCollectionItem;
FNeedsUpdate: boolean;
function GetItem(const AIndex: Integer): TListColumn;
procedure WSCreateColumns;
procedure SetItem(const AIndex: Integer; const AValue: TListColumn);
protected
function GetOwner: TPersistent; override;
public
constructor Create(AOwner: TCustomListView);
destructor Destroy; override;
procedure Update(Item: TCollectionItem); override;
function Add: TListColumn;
property Owner: TCustomListView read FOwner;
property Items[const AIndex: Integer]: TListColumn
read GetItem write SetItem; default;
procedure Assign(Source: TPersistent); override;
end;
{ TCustomListView }
TItemChange = (ctText, ctImage, ctState);
TViewStyle = (vsIcon, vsSmallIcon, vsList, vsReport);
TLVChangeEvent = procedure(Sender: TObject; Item: TListItem;
Change: TItemChange) of object;
TLVColumnClickEvent = procedure(Sender: TObject;
Column: TListColumn) of object;
TLVColumnRClickEvent = procedure(Sender: TObject; Column: TListColumn;
Point: TPoint) of object;
TLVCompareEvent = procedure(Sender: TObject; Item1, Item2: TListItem;
Data: Integer; var Compare: Integer) of object;
TLVDeletedEvent = procedure(Sender: TObject; Item: TListItem) of object;
TLVInsertEvent = TLVDeletedEvent;
TLVDataEvent = TLVDeletedEvent;
TLVCheckedItemEvent = procedure (Sender: TObject; Item: TListItem) of object;
TLVSelectItemEvent = procedure(Sender: TObject; Item: TListItem;
Selected: Boolean) of object;
TLVCustomDrawEvent = procedure(Sender: TCustomListView; const ARect: TRect;
var DefaultDraw: Boolean) of object;
TLVCustomDrawItemEvent = procedure(Sender: TCustomListView; Item: TListItem;
State: TCustomDrawState; var DefaultDraw: Boolean) of object;
TLVCustomDrawSubItemEvent=procedure(Sender: TCustomListView; Item: TListItem;
SubItem: Integer; State: TCustomDrawState;
var DefaultDraw: Boolean) of object;
TLVAdvancedCustomDrawEvent = procedure(Sender: TCustomListView; const ARect: TRect;
Stage: TCustomDrawStage; var DefaultDraw: Boolean) of object;
TLVAdvancedCustomDrawItemEvent = procedure(Sender: TCustomListView; Item: TListItem;
State: TCustomDrawState; Stage: TCustomDrawStage;
var DefaultDraw: Boolean) of object;
TLVAdvancedCustomDrawSubItemEvent=procedure(Sender: TCustomListView; Item: TListItem;
SubItem: Integer; State: TCustomDrawState;
Stage: TCustomDrawStage; var DefaultDraw: Boolean) of object;
TListViewProperty = (
lvpAutoArrange,
lvpCheckboxes,
lvpColumnClick,
lvpFlatScrollBars,
lvpFullDrag,
lvpGridLines,
lvpHideSelection,
lvpHotTrack,
lvpMultiSelect,
lvpOwnerDraw,
lvpReadOnly,
lvpRowSelect,
lvpShowColumnHeaders,
lvpShowWorkAreas,
lvpWrapText,
lvpToolTips
);
TListViewProperties = set of TListViewProperty;
TListViewImageList = (lvilSmall, lvilLarge, lvilState);
TListHotTrackStyle = (htHandPoint, htUnderlineCold, htUnderlineHot);
TListHotTrackStyles = set of TListHotTrackStyle;
TListViewFlag = (
lffSelectedValid
);
TListViewFlags = set of TListViewFlag;
{ TCustomListView }
TCustomListView = class(TWinControl)
private
FAllocBy: Integer;
FCanvas: TCanvas;
FDefaultItemHeight: integer;
FHotTrackStyles: TListHotTrackStyles;
FIconOptions: TIconOptions;
FOwnerData: Boolean;
FOwnerDataItem: TOwnerDataListItem;
FListItems: TListItems;
FColumns: TListColumns;
FImages: array[TListViewImageList] of TCustomImageList;
FImageChangeLinks: array[TListViewImageList] of TChangeLink;
FFlags: TListViewFlags;
FViewStyle: TViewStyle;
FSortType: TSortType;
FSortColumn: Integer;
FScrollBars: TScrollStyle;
FViewOriginCache: TPoint; // scrolled originwhile handle is not created
FSelected: TListItem; // temp copy of the selected item
FFocused: TListItem; // temp copy of the focused item
FSelectedIdx: Integer; // Index of Selected item, used if OwnerData = True;
FHoverTime: Integer; // temp copy of the hover time (the time a mouse must be over a item to auto select)
// MWE: not used: see updateScrollbars
// FLastHorzScrollInfo: TScrollInfo;
// FLastVertScrollInfo: TScrollInfo;
FUpdateCount: integer;
FOnChange: TLVChangeEvent;
FOnColumnClick: TLVColumnClickEvent;
FOnCompare: TLVCompareEvent;
FOnData: TLVDataEvent;
FOnDeletion: TLVDeletedEvent;
FOnInsert: TLVInsertEvent;
FOnItemChecked: TLVCheckedItemEvent;
FOnSelectItem: TLVSelectItemEvent;
FOnCustomDraw: TLVCustomDrawEvent;
FOnCustomDrawItem: TLVCustomDrawItemEvent;
FOnCustomDrawSubItem: TLVCustomDrawSubItemEvent;
FOnAdvancedCustomDraw: TLVAdvancedCustomDrawEvent;
FOnAdvancedCustomDrawItem: TLVAdvancedCustomDrawItemEvent;
FOnAdvancedCustomDrawSubItem: TLVAdvancedCustomDrawSubItemEvent;
FProperties: TListViewProperties;
function GetBoundingRect: TRect;
function GetColumnCount: Integer;
function GetColumnFromIndex(AIndex: Integer): TListColumn;
function GetDropTarget: TListItem;
function GetFocused: TListItem;
function GetImageList(const ALvilOrd: Integer): TCustomImageList;
function GetHoverTime: Integer;
function GetItemIndex: Integer;
function GetProperty(const ALvpOrd: Integer): Boolean;
function GetSelCount: Integer;
function GetSelection: TListItem;
function GetTopItem: TListItem;
function GetViewOrigin: TPoint;
function GetVisibleRowCount: Integer;
procedure SetAllocBy(const AValue: Integer);
procedure SetColumns(const AValue: TListColumns);
procedure SetDefaultItemHeight(AValue: Integer);
procedure SetDropTarget(const AValue: TListItem);
procedure SetFocused(const AValue: TListItem);
procedure SetHotTrackStyles(const AValue: TListHotTrackStyles);
procedure SetHoverTime(const AValue: Integer);
procedure SetIconOptions(const AValue: TIconOptions);
procedure SetImageList(const ALvilOrd: Integer; const AValue: TCustomImageList);
procedure SetItemIndex(const AValue: Integer);
procedure SetItems(const AValue : TListItems);
procedure SetItemVisible(const AValue: TListItem; const APartialOK: Boolean);
procedure SetOwnerData(const AValue: Boolean);
procedure SetProperty(const ALvpOrd: Integer; const AIsSet: Boolean);
procedure SetScrollBars(const AValue: TScrollStyle);
procedure SetSelection(const AValue: TListItem);
procedure SetSortColumn(const AValue: Integer);
procedure SetSortType(const AValue: TSortType);
procedure SetViewOrigin(AValue: TPoint);
procedure SetViewStyle(const Avalue: TViewStyle);
procedure Sort;
procedure UpdateScrollbars;
procedure CNNotify(var AMessage: TLMNotify); message CN_NOTIFY;
procedure InvalidateSelected;
protected
//called by TListItems
procedure ItemDeleted(const AItem: TListItem);
procedure ItemInserted(const AItem: TListItem);
protected
class procedure WSRegisterClass; override;
class function GetControlClassDefaultSize: TSize; override;
procedure InitializeWnd; override;
procedure FinalizeWnd; override;
procedure DestroyWnd; override;
procedure BeginAutoDrag; override;
procedure Change(AItem: TListItem; AChange: Integer); virtual;
procedure ColClick(AColumn: TListColumn); virtual;
procedure Delete(Item : TListItem);
procedure DoDeletion(AItem: TListItem); virtual;
procedure DoInsert(AItem: TListItem); virtual;
procedure DoItemChecked(AItem: TListItem);
procedure DoSelectItem(AItem: TListItem; ASelected: Boolean); virtual;
procedure InsertItem(Item : TListItem);
procedure ImageChanged(Sender : TObject);
procedure Loaded; override;
function IsCustomDrawn(ATarget: TCustomDrawTarget; AStage: TCustomDrawStage): Boolean; virtual;
function CustomDraw(const ARect: TRect; AStage: TCustomDrawStage): Boolean; virtual; // Return True if default drawing should be done
function CustomDrawItem(AItem: TListItem; AState: TCustomDrawState; AStage: TCustomDrawStage): Boolean; virtual; //
function CustomDrawSubItem(AItem: TListItem; ASubItem: Integer; AState: TCustomDrawState; AStage: TCustomDrawStage): Boolean; virtual; //
function IntfCustomDraw(ATarget: TCustomDrawTarget; AStage: TCustomDrawStage; AItem, ASubItem: Integer; AState: TCustomDrawState; const ARect: PRect): TCustomDrawResult;
function GetUpdateCount: Integer;
procedure DoGetOwnerData(Item: TListItem); virtual;
protected
property AllocBy: Integer read FAllocBy write SetAllocBy default 0;
property ColumnClick: Boolean index Ord(lvpColumnClick) read GetProperty write SetProperty default True;
property Columns: TListColumns read FColumns write SetColumns;
property DefaultItemHeight: integer read FDefaultItemHeight write SetDefaultItemHeight;
property HideSelection: Boolean index Ord(lvpHideSelection) read GetProperty write SetProperty default True;
property HoverTime: Integer read GetHoverTime write SetHoverTime default -1;
property LargeImages: TCustomImageList index Ord(lvilLarge) read GetImageList write SetImageList;
property OwnerDraw: Boolean index Ord(lvpOwnerDraw) read GetProperty write SetProperty default False;
property ScrollBars: TScrollStyle read FScrollBars write SetScrollBars default ssBoth;
property ShowColumnHeaders: Boolean index Ord(lvpShowColumnHeaders) read GetProperty write SetProperty default True;
property ShowWorkAreas: Boolean index Ord(lvpShowWorkAreas) read GetProperty write SetProperty default False;
property SmallImages: TCustomImageList index Ord(lvilSmall) read GetImageList write SetImageList;
property SortType: TSortType read FSortType write SetSortType default stNone;
property SortColumn: Integer read FSortColumn write SetSortColumn default 0;
property StateImages: TCustomImageList index Ord(lvilState) read GetImageList write SetImageList;
property ToolTips: Boolean index Ord(lvpToolTips) read GetProperty write SetProperty default True;
property ViewStyle: TViewStyle read FViewStyle write SetViewStyle default vsList;
property OnChange: TLVChangeEvent read FOnChange write FOnChange;
property OnColumnClick: TLVColumnClickEvent read FOnColumnClick write FOnColumnClick;
property OnCompare: TLVCompareEvent read FOnCompare write FOnCompare;
property OnData: TLVDataEvent read FOnData write FOnData;
property OnDeletion: TLVDeletedEvent read FOnDeletion write FOnDeletion;
property OnInsert: TLVInsertEvent read FOnInsert write FOnInsert;
property OnItemChecked: TLVCheckedItemEvent read FOnItemChecked write FOnItemChecked;
property OnSelectItem: TLVSelectItemEvent read FOnSelectItem write FOnSelectItem;
property OnCustomDraw: TLVCustomDrawEvent read FOnCustomDraw write FOnCustomDraw;
property OnCustomDrawItem: TLVCustomDrawItemEvent read FOnCustomDrawItem write FOnCustomDrawItem;
property OnCustomDrawSubItem: TLVCustomDrawSubItemEvent read FOnCustomDrawSubItem write FOnCustomDrawSubItem;
property OnAdvancedCustomDraw: TLVAdvancedCustomDrawEvent read FOnAdvancedCustomDraw write FOnAdvancedCustomDraw;
property OnAdvancedCustomDrawItem: TLVAdvancedCustomDrawItemEvent read FOnAdvancedCustomDrawItem write FOnAdvancedCustomDrawItem;
property OnAdvancedCustomDrawSubItem: TLVAdvancedCustomDrawSubItemEvent read FOnAdvancedCustomDrawSubItem write FOnAdvancedCustomDrawSubItem;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure BeginUpdate;
procedure Clear;
procedure EndUpdate;
function FindCaption(StartIndex: Integer; Value: string; Partial, Inclusive, Wrap: Boolean; PartStart: Boolean = True): TListItem;
function GetHitTestInfoAt(X, Y: Integer): THitTests;
function GetItemAt(x,y: integer): TListItem;
property BoundingRect: TRect read GetBoundingRect;
property BorderStyle default bsSingle;
property Canvas: TCanvas read FCanvas;
property Checkboxes: Boolean index Ord(lvpCheckboxes) read GetProperty write SetProperty default False;
property Column[AIndex: Integer]: TListColumn read GetColumnFromIndex;
property ColumnCount: Integer read GetColumnCount;
property DropTarget: TListItem read GetDropTarget write SetDropTarget;
property FlatScrollBars: Boolean index Ord(lvpFlatScrollBars) read GetProperty write SetProperty default False;
property FullDrag: Boolean index Ord(lvpFullDrag) read GetProperty write SetProperty default False;
property GridLines: Boolean index Ord(lvpGridLines) read GetProperty write SetProperty default False;
property HotTrack: Boolean index Ord(lvpHotTrack) read GetProperty write SetProperty default False;
property HotTrackStyles: TListHotTrackStyles read FHotTrackStyles write SetHotTrackStyles default [];
property IconOptions: TIconOptions read FIconOptions write SetIconOptions;
property ItemFocused: TListItem read GetFocused write SetFocused;
property ItemIndex: Integer read GetItemIndex write SetItemIndex;
property Items: TListItems read FListItems write SetItems;
// MultiSelect and ReadOnly should be protected, but can't because Carbon Interface
// needs to access this property and it cannot cast to TListItem, because we have
// other classes descending from TCustomListItem which need to work too
property MultiSelect: Boolean index Ord(lvpMultiselect) read GetProperty write SetProperty default False;
property OwnerData: Boolean read FOwnerData write SetOwnerData default False;
property ReadOnly: Boolean index Ord(lvpReadOnly) read GetProperty write SetProperty default False;
property RowSelect: Boolean index Ord(lvpRowSelect) read GetProperty write SetProperty default False;
property SelCount: Integer read GetSelCount;
property Selected: TListItem read GetSelection write SetSelection;
property TabStop default true;
property TopItem: TListItem read GetTopItem;
property ViewOrigin: TPoint read GetViewOrigin write SetViewOrigin;
property VisibleRowCount: Integer read GetVisibleRowCount;
end;
{ TListView }
TListView = class(TCustomListView)
published
property Align;
property AllocBy;
property Anchors;
property BorderSpacing;
property BorderStyle;
property BorderWidth;
property Checkboxes;
property Color default {$ifdef UseCLDefault}clDefault{$else}clWindow{$endif};
property Columns;
property ColumnClick;
property Constraints;
property DragCursor;
property DragKind;
property DragMode;
// property DefaultItemHeight;
// property DropTarget;
property Enabled;
// property FlatScrollBars;
property Font;
// property FullDrag;
// property GridLines;
property HideSelection;
// property HotTrack;
// property HotTrackStyles;
// property HoverTime;
property IconOptions;
// property ItemIndex; shouldn't be published, see bug 16367
property Items;
property LargeImages;
property MultiSelect;
property OwnerData;
// property OwnerDraw;
property ParentColor default False;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property ReadOnly;
property RowSelect;
property ScrollBars;
property ShowColumnHeaders;
property ShowHint;
// property ShowWorkAreas;
property SmallImages;
property SortColumn;
property SortType;
property StateImages;
property TabStop;
property TabOrder;
property ToolTips;
property Visible;
property ViewStyle;
property OnAdvancedCustomDraw;
property OnAdvancedCustomDrawItem;
property OnAdvancedCustomDrawSubItem;
property OnChange;
property OnClick;
property OnColumnClick;
property OnCompare;
property OnContextPopup;
property OnCustomDraw;
property OnCustomDrawItem;
property OnCustomDrawSubItem;
property OnData;
property OnDblClick;
property OnDeletion;
property OnDragDrop;
property OnDragOver;
property OnEndDock;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnItemChecked;
property OnKeyDown;
property OnKeyPress;
property OnKeyUp;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnResize;
property OnSelectItem;
property OnStartDock;
property OnStartDrag;
property OnUTF8KeyPress;
end;
TProgressBarOrientation = (pbHorizontal, pbVertical, pbRightToLeft, pbTopDown);
TProgressBarStyle = (pbstNormal, pbstMarquee);
{ TCustomProgressBar }
{
@abstract(Simple progressbar.)
Introduced by Author Name <stoppok@osibisa.ms.sub.org>
Currently maintained by Maintainer Name <stoppok@osibisa.ms.sub.org>
}
TCustomProgressBar = class(TWinControl)
private
FMin: Integer;
FMax: Integer;
FStep: Integer;
FPosition: Integer;
FSmooth: boolean;
FBarShowText: boolean;
FBarTextFormat: string;
FOrientation: TProgressBarOrientation;
FStyle: TProgressBarStyle;
function GetMin: Integer;
function GetMax: Integer;
function GetPosition: Integer;
procedure SetParams(AMin, AMax: Integer);
procedure SetMin(Value: Integer);
procedure SetMax(Value: Integer);
procedure SetPosition(Value: Integer);
procedure SetStep(Value: Integer);
procedure SetSmooth (Value : boolean);
procedure SetBarShowText (Value : boolean);
procedure SetOrientation (Value : TProgressBarOrientation);
procedure SetStyle(const AValue: TProgressBarStyle);
protected
class procedure WSRegisterClass; override;
procedure ApplyChanges;
procedure InitializeWnd; override;
procedure Loaded; override;
class function GetControlClassDefaultSize: TSize; override;
public
constructor Create(AOwner: TComponent); override;
procedure StepIt;
procedure StepBy(Delta: Integer);
public
property Max: Integer read GetMax write SetMax default 100;
property Min: Integer read GetMin write SetMin default 0;
property Orientation: TProgressBarOrientation read FOrientation write SetOrientation default pbHorizontal;
property Position: Integer read GetPosition write SetPosition default 0;
property Smooth : boolean read FSmooth write SetSmooth default False;
property Step: Integer read FStep write SetStep default 10;
property Style: TProgressBarStyle read FStyle write SetStyle default pbstNormal;
property BarShowText : boolean read FBarShowText write SetBarShowText default False;
end;
{ TProgressBar }
TProgressBar = class(TCustomProgressBar)
published
property Align;
property Anchors;
property BorderSpacing;
property BorderWidth;
property Constraints;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property Hint;
property Max;
property Min;
property OnContextPopup;
property OnDragDrop;
property OnDragOver;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnStartDock;
property OnStartDrag;
property Orientation;
property ParentShowHint;
property PopupMenu;
property Position;
property ShowHint;
property Smooth;
property Step;
property Style;
property TabOrder;
property TabStop;
property Visible;
property BarShowText;
end;
TUDAlignButton = (udLeft, udRight, udTop, udBottom);
TUDOrientation = (udHorizontal, udVertical);
TUDBtnType = (btNext, btPrev);
TUDClickEvent = procedure (Sender: TObject; Button: TUDBtnType) of object;
TUDChangingEvent = procedure (Sender: TObject; var AllowChange: Boolean) of object;
{ TCustomUpDown }
TCustomUpDown = class(TCustomControl)
private
MinBtn: TControl;// TSpeedButton
MaxBtn: TControl;// TSpeedButton
BTimerProc: TProcedureOfObject;
BTimerBounds : TRect;
FArrowKeys: Boolean;
FAssociate: TWinControl;
FMin: SmallInt;
FMax: SmallInt;
FIncrement: Integer;
FPosition: SmallInt;
FThousands: Boolean;
FWrap: Boolean;
FOnClick: TUDClickEvent;
FAlignButton: TUDAlignButton;
FOrientation: TUDOrientation;
FOnChanging: TUDChangingEvent;
function GetPosition: SmallInt;
procedure BTimerExec(Sender : TObject);
procedure SetAlignButton(Value: TUDAlignButton);
procedure SetArrowKeys(Value: Boolean);
procedure SetAssociate(Value: TWinControl);
procedure SetIncrement(Value: Integer);
procedure SetMax(Value: SmallInt);
procedure SetMin(Value: SmallInt);
procedure SetOrientation(Value: TUDOrientation);
procedure SetPosition(Value: SmallInt);
procedure SetThousands(Value: Boolean);
procedure SetWrap(Value: Boolean);
procedure UpdateAlignButtonPos;
procedure UpdateOrientation;
procedure UpdateUpDownPositionText;
protected
class procedure WSRegisterClass; override;
procedure AssociateKeyDown(Sender: TObject; var Key: Word; ShiftState : TShiftState);
procedure OnAssociateChangeBounds(Sender: TObject);
procedure DoOnResize; override;
procedure SetEnabled(Value: Boolean); override;
class function GetControlClassDefaultSize: TSize; override;
function CanChange: Boolean; virtual;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure Click(Button: TUDBtnType); virtual; overload;
property AlignButton: TUDAlignButton read FAlignButton write SetAlignButton default udRight;
property ArrowKeys: Boolean read FArrowKeys write SetArrowKeys default True;
property Associate: TWinControl read FAssociate write SetAssociate;
property Min: SmallInt read FMin write SetMin;
property Max: SmallInt read FMax write SetMax default 100;
property Increment: Integer read FIncrement write SetIncrement default 1;
property Orientation: TUDOrientation read FOrientation write SetOrientation default udVertical;
property Position: SmallInt read GetPosition write SetPosition;
property Thousands: Boolean read FThousands write SetThousands default True;
property Wrap: Boolean read FWrap write SetWrap;
property OnChanging: TUDChangingEvent read FOnChanging write FOnChanging;
property OnClick: TUDClickEvent read FOnClick write FOnClick;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; Override;
end;
{ TUpDown }
TUpDown = class(TCustomUpDown)
published
property AlignButton;
property Anchors;
property Associate;
property ArrowKeys;
property BorderSpacing;
property Enabled;
property Hint;
property Min;
property Max;
property Increment;
property Constraints;
property Orientation;
property ParentShowHint;
property PopupMenu;
property Position;
property ShowHint;
property TabOrder;
property TabStop;
property Thousands;
property Visible;
property Wrap;
property OnChanging;
property OnClick;
property OnContextPopup;
property OnEnter;
property OnExit;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
end;
{ TToolButton }
const
CN_DROPDOWNCLOSED = LM_USER + $1000;
type
TToolButtonStyle =
(
tbsButton, // button (can be clicked)
tbsCheck, // check item (click to toggle state, can be grouped)
tbsDropDown, // button with dropdown button to show a popup menu
tbsSeparator, // space holder
tbsDivider // space holder with line
);
TToolButtonFlag =
(
tbfPressed, // set while mouse is pressed on button
tbfArrowPressed // set while mouse is pressed on arrow button
);
TToolButtonFlags = set of TToolButtonFlag;
{ TToolButtonActionLink }
TToolButtonActionLink = class(TControlActionLink)
protected
procedure AssignClient(AClient: TObject); override;
procedure SetChecked(Value: Boolean); override;
procedure SetImageIndex(Value: Integer); override;
public
function IsCheckedLinked: Boolean; override;
function IsImageIndexLinked: Boolean; override;
end;
TToolButtonActionLinkClass = class of TToolButtonActionLink;
TToolBar = class;
TToolButton = class(TGraphicControl)
private
FAllowAllUp: Boolean;
FDown: Boolean;
FDropdownMenu: TPopupMenu;
FGrouped: Boolean;
FImageIndex: TImageIndex;
FIndeterminate: Boolean;
FMarked: Boolean;
FMenuItem: TMenuItem;
FMouseInControl: boolean;
FShowCaption: boolean;
FStyle: TToolButtonStyle;
FToolButtonFlags: TToolButtonFlags;
FUpdateCount: Integer;
FWrap: Boolean;
procedure GetGroupBounds(var StartIndex, EndIndex: integer);
function GetIndex: Integer;
function GetTextSize: TSize;
function IsCheckedStored: Boolean;
function IsImageIndexStored: Boolean;
function IsWidthStored: Boolean;
procedure SetDown(Value: Boolean);
procedure SetDropdownMenu(Value: TPopupMenu);
procedure SetGrouped(Value: Boolean);
procedure SetImageIndex(Value: TImageIndex);
procedure SetIndeterminate(Value: Boolean);
procedure SetMarked(Value: Boolean);
procedure SetMenuItem(Value: TMenuItem);
procedure SetShowCaption(const AValue: boolean);
procedure SetStyle(Value: TToolButtonStyle);
procedure SetWrap(Value: Boolean);
procedure SetMouseInControl(NewMouseInControl: Boolean);
procedure CMEnabledChanged(var Message: TLMEssage); message CM_ENABLEDCHANGED;
procedure CMVisibleChanged(var Message: TLMessage); message CM_VISIBLECHANGED;
procedure CMHitTest(var Message: TCMHitTest); message CM_HITTEST;
protected
FToolBar: TToolBar;
class procedure WSRegisterClass; override;
procedure CopyPropertiesFromMenuItem(const Value: TMenuItem);
function GetActionLinkClass: TControlActionLinkClass; override;
procedure ActionChange(Sender: TObject; CheckDefaults: Boolean); override;
procedure AssignTo(Dest: TPersistent); override;
procedure BeginUpdate; virtual;
procedure EndUpdate; virtual;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure MouseEnter; override;
procedure MouseLeave; override;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure Paint; override;
procedure TextChanged; override;
procedure CalculatePreferredSize(
var PreferredWidth, PreferredHeight: integer;
WithThemeSpace: Boolean); override;
class function GetControlClassDefaultSize: TSize; override;
procedure Loaded; override;
procedure RefreshControl; virtual;
procedure SetToolBar(NewToolBar: TToolBar);
procedure UpdateControl; virtual;
function GetButtonDrawDetail: TThemedElementDetails; virtual;
procedure SetParent(AParent: TWinControl); override;
procedure UpdateVisibleToolbar;
function GroupAllUpAllowed: boolean;
function DialogChar(var Message: TLMKey): boolean; override;
procedure SetAutoSize(Value: Boolean); override;
procedure RealSetText(const AValue: TCaption); override;
public
constructor Create(TheOwner: TComponent); override;
function CheckMenuDropdown: Boolean; virtual;
procedure Click; override;
procedure GetCurrentIcon(var ImageList: TCustomImageList;
var TheIndex: integer); virtual;
procedure GetPreferredSize(var PreferredWidth, PreferredHeight: integer;
Raw: boolean = false;
WithThemeSpace: boolean = true); override;
property Index: Integer read GetIndex;
published
property Action;
property AllowAllUp: Boolean read FAllowAllUp write FAllowAllUp default False;
property AutoSize default False;
property Caption;
property Down: Boolean read FDown write SetDown stored IsCheckedStored default False;
property DragCursor;
property DragKind;
property DragMode;
property DropdownMenu: TPopupMenu read FDropdownMenu write SetDropdownMenu;
property Enabled;
property Grouped: Boolean read FGrouped write SetGrouped default False;
property Height stored False;
property ImageIndex: TImageIndex read FImageIndex write SetImageIndex stored IsImageIndexStored default -1;
property Indeterminate: Boolean read FIndeterminate write SetIndeterminate default False;
property Marked: Boolean read FMarked write SetMarked default False;
property MenuItem: TMenuItem read FMenuItem write SetMenuItem;
property OnClick;
property OnContextPopup;
property OnDragDrop;
property OnDragOver;
property OnEndDock;
property OnEndDrag;
property OnMouseDown;
property OnMouseMove;
property OnMouseUp;
property OnStartDock;
property OnStartDrag;
property ParentShowHint;
property PopupMenu;
property ShowCaption: boolean read FShowCaption write SetShowCaption default true;
property ShowHint;
property Style: TToolButtonStyle read FStyle write SetStyle default tbsButton;
property Visible;
property Width stored IsWidthStored;
property Wrap: Boolean read FWrap write SetWrap default False;
end;
{ TToolBarEnumerator }
TToolBarEnumerator = class
private
FToolBar: TToolBar;
FPosition: Integer;
function GetCurrent: TToolButton;
public
constructor Create(AToolBar: TToolBar);
function MoveNext: Boolean;
property Current: TToolButton read GetCurrent;
end;
{ TToolBar }
TToolBarFlag = (
tbfUpdateVisibleBarNeeded,
tbfPlacingControls
);
TToolBarFlags = set of TToolBarFlag;
TToolBar = class(TToolWindow)
private
FButtonHeight: Integer;
FRealizedButtonHeight: integer;
FButtons: TList;
FButtonWidth: Integer;
FDisabledImageChangeLink: TChangeLink;
FDisabledImages: TCustomImageList;
FDropDownWidth: integer;
FDropDownButton: TToolButton;
FFlat: Boolean;
FHotImageChangeLink: TChangeLink;
FHotImages: TCustomImageList;
FImageChangeLink: TChangeLink;
FImages: TCustomImageList;
FIndent: Integer;
FList: Boolean;
FNewStyle: Boolean;
FRowCount: integer;
FShowCaptions: Boolean;
FCurrentMenu: TPopupMenu;
FCurrentMenuAutoFree: boolean;
FSrcMenu: TMenu;
FSrcMenuItem: TMenuItem;
FToolBarFlags: TToolBarFlags;
FUpdateCount: Integer;
FWrapable: Boolean;
procedure ApplyFontForButtons;
function GetButton(Index: Integer): TToolButton;
function GetButtonCount: Integer;
function GetTransparent: Boolean;
procedure SetButtonHeight(const AValue: Integer);
procedure SetButtonWidth(const AValue: Integer);
procedure SetDisabledImages(const AValue: TCustomImageList);
procedure SetFlat(const AValue: Boolean);
procedure SetHotImages(const AValue: TCustomImageList);
procedure SetImages(const AValue: TCustomImageList);
procedure SetIndent(const AValue: Integer);
procedure SetList(const AValue: Boolean);
procedure SetShowCaptions(const AValue: Boolean);
procedure SetTransparent(const AValue: Boolean);
procedure SetWrapable(const AValue: Boolean);
procedure ToolButtonDown(AButton: TToolButton; NewDown: Boolean);
procedure ImageListChange(Sender: TObject);
procedure DisabledImageListChange(Sender: TObject);
procedure HotImageListChange(Sender: TObject);
procedure UpdateVisibleBar;
procedure OnTemporaryPopupMenuClose(Sender: TObject);
procedure MoveSubMenuItems(SrcMenuItem, DestMenuItem: TMenuItem);
procedure AddButton(Button: TToolButton);
procedure RemoveButton(Button: TToolButton);
function IsVertical: Boolean;
protected
class procedure WSRegisterClass; override;
procedure AdjustClientRect(var ARect: TRect); override;
class function GetControlClassDefaultSize: TSize; override;
procedure DoAutoSize; override;
procedure CalculatePreferredSize(var PreferredWidth,
PreferredHeight: integer; WithThemeSpace: Boolean); override;
function CheckMenuDropdown(Button: TToolButton): Boolean; virtual;
procedure ClickButton(Button: TToolButton); virtual;
procedure CreateWnd; override;
procedure ControlsAligned; override;
function FindButtonFromAccel(Accel: Word): TToolButton;
procedure FontChanged(Sender: TObject); override;
procedure Loaded; override;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure RepositionButton(Index: Integer);
procedure RepositionButtons(Index: Integer);
function WrapButtons(UseWidth: integer;
out NewWidth, NewHeight: Integer;
Simulate: boolean): Boolean;
public
constructor Create(TheOwner: TComponent); override;
destructor Destroy; override;
procedure FlipChildren(AllLevels: Boolean); override;
procedure BeginUpdate; virtual;
procedure EndUpdate; virtual;
function GetEnumerator: TToolBarEnumerator;
procedure Paint; override;
procedure SetButtonSize(NewButtonWidth, NewButtonHeight: integer);
function CanFocus: Boolean; override;
public
property ButtonCount: Integer read GetButtonCount;
property Buttons[Index: Integer]: TToolButton read GetButton;
property ButtonList: TList read FButtons;
property RowCount: Integer read FRowCount;
published
property Align default alTop;
property Anchors;
property AutoSize;
property BorderSpacing;
property BorderWidth;
property ButtonHeight: Integer read FButtonHeight write SetButtonHeight default 22;
property ButtonWidth: Integer read FButtonWidth write SetButtonWidth default 23;
property Caption;
property ChildSizing;
property Constraints;
property Color;
//property Customizable: Boolean read FCustomizable write SetCustomizable default False;
property DisabledImages: TCustomImageList read FDisabledImages write SetDisabledImages;
property DragCursor;
property DragKind;
property DragMode;
property EdgeBorders default [ebTop];
property EdgeInner;
property EdgeOuter;
property Enabled;
property Flat: Boolean read FFlat write SetFlat default True;
property Font;
property Height default 32;
//property HideClippedButtons: Boolean read FHideClippedButtons write SetHideClippedButtons default False;
property HotImages: TCustomImageList read FHotImages write SetHotImages;
property Images: TCustomImageList read FImages write SetImages;
property Indent: Integer read FIndent write SetIndent default 1;
property List: Boolean read FList write SetList default False;
//property Menu: TMainMenu read FMenu write SetMenu;
property ParentColor;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property ShowCaptions: Boolean read FShowCaptions write SetShowCaptions default False;
property ShowHint;
property TabOrder;
property TabStop;
property Transparent: Boolean read GetTransparent write SetTransparent default False;
property Visible;
property Wrapable: Boolean read FWrapable write SetWrapable default True;
property OnClick;
property OnContextPopup;
property OnDblClick;
property OnDragDrop;
property OnDragOver;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnMouseDown;
property OnMouseMove;
property OnMouseUp;
property OnMouseEnter;
property OnMouseLeave;
property OnResize;
property OnChangeBounds;
property OnStartDrag;
end;
{ TCustomTrackBar }
TTrackBarOrientation = (trHorizontal, trVertical);
TTickMark = (tmBottomRight, tmTopLeft, tmBoth);
TTickStyle = (tsNone, tsAuto, tsManual);
TTrackBarScalePos = (trLeft, trRight, trTop, trBottom);
TCustomTrackBar = class(TWinControl)
private
FOrientation: TTrackBarOrientation;
FReversed: Boolean;
FSelEnd: Integer;
FSelStart: Integer;
FShowSelRange: Boolean;
FTickMarks: TTickMark;
FTickStyle: TTickStyle;
FLineSize: Integer;
FPageSize: Integer;
FMin: Integer;
FMax: Integer;
FFrequency: Integer;
FPosition: Integer;
FScalePos: TTrackBarScalePos;
FScaleDigits: integer;
FOnChange: TNotifyEvent;
procedure SetFrequency(Value: Integer);
procedure SetLineSize(Value: Integer);
procedure SetMax(Value: Integer);
procedure SetMin(Value: Integer);
procedure SetOrientation(Value: TTrackBarOrientation);
procedure SetPageSize(Value: Integer);
procedure SetParams(APosition, AMin, AMax: Integer);
procedure SetPosition(Value: Integer);
procedure SetReversed(const AValue: Boolean);
procedure SetScalePos(Value: TTrackBarScalePos);
procedure SetSelEnd(const AValue: Integer);
procedure SetSelStart(const AValue: Integer);
procedure SetShowSelRange(const AValue: Boolean);
procedure SetTickMarks(Value: TTickMark);
procedure SetTickStyle(Value: TTickStyle);
procedure UpdateSelection;
protected
class procedure WSRegisterClass; override;
procedure ApplyChanges;
procedure Changed; virtual;
procedure DoChange(var msg); message LM_CHANGED;
procedure FixParams(var APosition, AMin, AMax: Integer);
class function GetControlClassDefaultSize: TSize; override;
procedure InitializeWnd; override;
procedure Loaded; override;
public
constructor Create(AOwner: TComponent); override;
procedure SetTick(Value: Integer);
published
property Frequency: Integer read FFrequency write SetFrequency default 1;
property LineSize: Integer read FLineSize write SetLineSize default 1;
property Max: Integer read FMax write SetMax default 10;
property Min: Integer read FMin write SetMin default 0;
property OnChange: TNotifyEvent read FOnChange write FOnChange;
property Orientation: TTrackBarOrientation read FOrientation write SetOrientation default trHorizontal;
property PageSize: Integer read FPageSize write SetPageSize default 2;
property Position: Integer read FPosition write SetPosition;
property Reversed: Boolean read FReversed write SetReversed default False;
property ScalePos: TTrackBarScalePos read FScalePos write SetScalePos default trTop;
property SelEnd: Integer read FSelEnd write SetSelEnd default 0;
property SelStart: Integer read FSelStart write SetSelStart default 0;
property ShowSelRange: Boolean read FShowSelRange write SetShowSelRange default True;
property TabStop default True;
property TickMarks: TTickMark read FTickMarks write SetTickMarks default tmBottomRight;
property TickStyle: TTickStyle read FTickStyle write SetTickStyle default tsAuto;
end;
{ TTrackBar }
TTrackBar = class(TCustomTrackBar)
published
property Align;
property Anchors;
property BorderSpacing;
property Constraints;
property DragCursor;
property DragMode;
property Enabled;
property Frequency;
property Hint;
property LineSize;
property Max;
property Min;
property OnChange;
property OnChangeBounds;
property OnClick;
property OnContextPopup;
property OnDragDrop;
property OnDragOver;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnMouseWheel;
property OnMouseWheelDown;
property OnMouseWheelUp;
property OnKeyDown;
property OnKeyPress;
property OnKeyUp;
property OnResize;
property OnStartDrag;
property OnUTF8KeyPress;
property Orientation;
property PageSize;
property ParentShowHint;
property PopupMenu;
property Position;
property Reversed;
property ScalePos;
property SelEnd;
property SelStart;
property ShowHint;
property ShowSelRange;
property TabOrder;
property TabStop;
property TickMarks;
property TickStyle;
property Visible;
end;
{ TTreeNode }
type
TCustomTreeView = class;
TTreeNodes = class;
TTreeNode = class;
TTreeNodeClass = class of TTreeNode;
TNodeState = (nsCut, nsDropHilited, nsFocused, nsSelected, nsMultiSelected,
nsExpanded, nsHasChildren, nsInTree, nsDeleting, nsBound);
TNodeStates = set of TNodeState;
TNodeAttachMode = (
naAdd, // add as last sibling of Destination
naAddFirst, // add as first sibling of Destination
naAddChild, // add as last child of Destination
naAddChildFirst, // add as first child of Destination
naInsert, // insert in front of Destination
naInsertBehind // insert behind Destination
);
TAddMode = (taAddFirst, taAdd, taInsert);
TMultiSelectStyles = (msControlSelect, msShiftSelect,
msVisibleOnly, msSiblingOnly);
TMultiSelectStyle = set of TMultiSelectStyles;
TTreeNodeArray = ^TTreeNode;
ETreeNodeError = class(Exception);
ETreeViewError = class(ETreeNodeError);
const
NodeAttachModeNames: array[TNodeAttachMode] of string =
('naAdd', 'naAddFirst', 'naAddChild', 'naAddChildFirst',
'naInsert', 'naInsertBehind');
AddModeNames: array[TAddMode] of string =
('taAddFirst', 'taAdd', 'taInsert');
LCLStreamID = -7;
type
TTVChangingEvent = procedure(Sender: TObject; Node: TTreeNode;
var AllowChange: Boolean) of object;
TTVChangedEvent = procedure(Sender: TObject; Node: TTreeNode) of object;
TTVEditingEvent = procedure(Sender: TObject; Node: TTreeNode;
var AllowEdit: Boolean) of object;
TTVEditingEndEvent = procedure(Sender: TObject; Node: TTreeNode;
Cancel: Boolean) of object;
TTVEditedEvent = procedure(Sender: TObject; Node: TTreeNode;
var S: string) of object;
TTVExpandingEvent = procedure(Sender: TObject; Node: TTreeNode;
var AllowExpansion: Boolean) of object;
TTVCollapsingEvent = procedure(Sender: TObject; Node: TTreeNode;
var AllowCollapse: Boolean) of object;
TTVExpandedEvent = procedure(Sender: TObject; Node: TTreeNode) of object;
TTVCompareEvent = procedure(Sender: TObject; Node1, Node2: TTreeNode;
var Compare: Integer) of object;
TTVCustomDrawEvent = procedure(Sender: TCustomTreeView; const ARect: TRect;
var DefaultDraw: Boolean) of object;
TTVCustomDrawItemEvent = procedure(Sender: TCustomTreeView; Node: TTreeNode;
State: TCustomDrawState; var DefaultDraw: Boolean) of object;
TTVAdvancedCustomDrawEvent = procedure(Sender: TCustomTreeView;
const ARect: TRect; Stage: TCustomDrawStage;
var DefaultDraw: Boolean) of object;
TTVAdvancedCustomDrawItemEvent = procedure(Sender: TCustomTreeView;
Node: TTreeNode; State: TCustomDrawState; Stage: TCustomDrawStage;
var PaintImages, DefaultDraw: Boolean) of object;
TTVCustomCreateNodeEvent = procedure(Sender: TCustomTreeView;
var ATreeNode: TTreenode) of object;
TTVCreateNodeClassEvent = procedure(Sender: TCustomTreeView;
var NodeClass: TTreeNodeClass) of object;
TTreeNodeCompare = function(Node1, Node2: TTreeNode): integer of object;
TOldTreeNodeInfo = packed record
ImageIndex: Integer;
SelectedIndex: Integer;
StateIndex: Integer;
OverlayIndex: Integer;
Data: Pointer;
Count: Integer;
Height: integer;
Expanded: boolean;
TextLen: integer;
// here follows the text
end;
TTreeNodeInfo = packed record
ImageIndex: Integer;
SelectedIndex: Integer;
StateIndex: Integer;
OverlayIndex: Integer;
Count: Integer;
Height: integer;
Expanded: boolean;
TextLen: integer;
// here follows the text
end;
// this is the delphi node stream record
PDelphiNodeInfo = ^TDelphiNodeInfo;
TDelphiNodeInfo = packed record
ImageIndex: Integer;
SelectedIndex: Integer;
StateIndex: Integer;
OverlayIndex: Integer;
Data: Pointer;
Count: Integer;
Text: string[255];
end;
{ TTreeNode }
TTreeNode = class(TPersistent)
private
FOwner: TTreeNodes; // the object, which contains all nodes of the tree
FCapacity: integer; // size of FItems
FCount: integer; // # of first level children in FItems
FData: Pointer; // custom data
FHeight: integer; // height in pixels
FImageIndex: TImageIndex;
FIndex: integer; // index in parent
FItems: TTreeNodeArray; // first level child nodes
FNextBrother: TTreeNode; // next sibling
FNextMultiSelected: TTreeNode;
FOverlayIndex: Integer;
FParent: TTreeNode;
FPrevBrother: TTreeNode; // previous sibling
FPrevMultiSelected: TTreeNode;
FSelectedIndex: Integer;
FStateIndex: Integer;
FStates: TNodeStates;
FSubTreeCount: integer;// total of all child nodes and self
FText: string;
FTop: integer; // top coordinate
function AreParentsExpanded: Boolean;
procedure BindToMultiSelected;
function CompareCount(CompareMe: Integer): Boolean;
function DoCanExpand(ExpandIt: Boolean): Boolean;
procedure DoExpand(ExpandIt: Boolean);
procedure ExpandItem(ExpandIt: Boolean; Recurse: Boolean);
function GetAbsoluteIndex: Integer;
function GetDeleting: Boolean;
function GetHasChildren: Boolean;
function GetCount: Integer;
function GetCut: boolean;
function GetDropTarget: Boolean;
function GetExpanded: Boolean;
function GetFocused: Boolean;
function GetHeight: integer;
function GetIndex: Integer;
function GetItems(AnIndex: Integer): TTreeNode;
function GetLevel: Integer;
function GetMultiSelected: Boolean;
function GetSelected: Boolean;
function GetState(NodeState: TNodeState): Boolean;
function GetTreeNodes: TTreeNodes;
function GetTreeView: TCustomTreeView;
function GetTop: integer;
procedure InternalMove(ANode: TTreeNode; AddMode: TAddMode);
function IsEqual(Node: TTreeNode): Boolean;
function IsNodeVisible: Boolean;
function IsNodeHeightFullVisible: Boolean;
procedure ReadData(Stream: TStream; StreamVersion: integer);
procedure ReadDelphiData(Stream: TStream; Info: PDelphiNodeInfo);
procedure SetCut(AValue: Boolean);
procedure SetData(AValue: Pointer);
procedure SetDropTarget(AValue: Boolean);
procedure SetExpanded(AValue: Boolean);
procedure SetFocused(AValue: Boolean);
procedure SetHasChildren(AValue: Boolean);
procedure SetHeight(AValue: integer);
procedure SetImageIndex(AValue: TImageIndex);
procedure SetIndex(const AValue: Integer);
procedure SetItems(AnIndex: Integer; AValue: TTreeNode);
procedure SetMultiSelected(const AValue: Boolean);
procedure SetOverlayIndex(AValue: Integer);
procedure SetSelected(AValue: Boolean);
procedure SetSelectedIndex(AValue: Integer);
procedure SetStateIndex(AValue: Integer);
procedure SetText(const S: string);
procedure Unbind;
procedure UnbindFromMultiSelected;
procedure WriteData(Stream: TStream);
procedure WriteDelphiData(Stream: TStream; Info: PDelphiNodeInfo);
protected
function GetOwner: TPersistent; override;
public
constructor Create(AnOwner: TTreeNodes);
function AlphaSort: Boolean;
procedure Assign(Source: TPersistent); override;
procedure Collapse(Recurse: Boolean);
function CustomSort(SortProc: TTreeNodeCompare): Boolean;
function DefaultTreeViewSort(Node1, Node2: TTreeNode): Integer;
procedure Delete;
procedure DeleteChildren;
destructor Destroy; override;
function DisplayExpandSignLeft: integer;
function DisplayExpandSignRect: TRect;
function DisplayExpandSignRight: integer;
function DisplayIconLeft: integer;
function DisplayRect(TextOnly: Boolean): TRect;
function DisplayStateIconLeft: integer;
function DisplayTextLeft: integer;
function DisplayTextRight: integer;
function EditText: Boolean;
procedure EndEdit(Cancel: Boolean);
procedure Expand(Recurse: Boolean);
procedure ExpandParents;
function Bottom: integer;
function BottomExpanded: integer;
function GetParentNodeOfAbsoluteLevel(TheAbsoluteLevel: integer): TTreeNode;
function GetFirstChild: TTreeNode;
function GetHandle: THandle;
function GetLastSibling: TTreeNode;
function GetLastChild: TTreeNode;
function GetLastSubChild: TTreeNode;
function GetNext: TTreeNode;
function GetNextChild(AValue: TTreeNode): TTreeNode;
function GetNextExpanded: TTreeNode;
function GetNextMultiSelected: TTreeNode;
function GetNextSibling: TTreeNode;
function GetNextVisible: TTreeNode;
function GetPrev: TTreeNode;
function GetPrevChild(AValue: TTreeNode): TTreeNode;
function GetPrevExpanded: TTreeNode;
function GetPrevMultiSelected: TTreeNode;
function GetPrevSibling: TTreeNode;
function GetPrevVisible: TTreeNode;
function HasAsParent(AValue: TTreeNode): Boolean;
function IndexOf(AValue: TTreeNode): Integer;
function IndexOfText(const NodeText: string): Integer;
function FindNode(const NodeText: string): TTreeNode;
function GetTextPath: string;
procedure MakeVisible;
procedure MoveTo(Destination: TTreeNode; Mode: TNodeAttachMode); virtual;
procedure MultiSelectGroup;
procedure Update;
procedure ConsistencyCheck;
procedure WriteDebugReport(const Prefix: string; Recurse: boolean);
property AbsoluteIndex: Integer read GetAbsoluteIndex;
property Count: Integer read GetCount;
property Cut: Boolean read GetCut write SetCut;
property Data: Pointer read FData write SetData;
property Deleting: Boolean read GetDeleting;
property Focused: Boolean read GetFocused write SetFocused;
property DropTarget: Boolean read GetDropTarget write SetDropTarget;
property Expanded: Boolean read GetExpanded write SetExpanded;
property Handle: THandle read GetHandle;
property HasChildren: Boolean read GetHasChildren write SetHasChildren;
property Height: integer read GetHeight write SetHeight;
property ImageIndex: TImageIndex read FImageIndex write SetImageIndex default -1;
property Index: Integer read GetIndex write SetIndex;
property IsVisible: Boolean read IsNodeVisible;
property IsFullHeightVisible: Boolean read IsNodeHeightFullVisible;
property Items[ItemIndex: Integer]: TTreeNode read GetItems write SetItems; default;
property Level: Integer read GetLevel;
property MultiSelected: Boolean read GetMultiSelected write SetMultiSelected;
property OverlayIndex: Integer read FOverlayIndex write SetOverlayIndex default -1;
property Owner: TTreeNodes read FOwner;
property Parent: TTreeNode read FParent;
property Selected: Boolean read GetSelected write SetSelected;
property SelectedIndex: Integer read FSelectedIndex write SetSelectedIndex default -1;
property SubTreeCount: integer read FSubTreeCount;
property StateIndex: Integer read FStateIndex write SetStateIndex default -1;
property Text: string read FText write SetText;
property TreeNodes: TTreeNodes read GetTreeNodes;
property TreeView: TCustomTreeView read GetTreeView;
property Top: integer read GetTop;
end;
{ TTreeNodesEnumerator }
TTreeNodesEnumerator = class
private
FNodes: TTreeNodes;
FPosition: Integer;
function GetCurrent: TTreeNode;
public
constructor Create(ANodes: TTreeNodes);
function MoveNext: Boolean;
property Current: TTreeNode read GetCurrent;
end;
{ TTreeNodes }
PNodeCache = ^TNodeCache;
TNodeCache = record
CacheNode: TTreeNode;
CacheIndex: Integer;
end;
{ TTreeNodes }
TTreeNodes = class(TPersistent)
private
FCount: integer;
FSelection: TFPList;
FFirstMultiSelected: TTreeNode;
FLastMultiSelected: TTreeNode;
FKeepCollapsedNodes: boolean;
FNodeCache: TNodeCache;
FOwner: TCustomTreeView;
FTopLvlCapacity: integer;
FTopLvlCount: integer;
FTopLvlItems: TTreeNodeArray; // root and root siblings
FUpdateCount: Integer;
procedure ClearCache;
function GetHandle: THandle;
function GetNodeFromIndex(Index: Integer): TTreeNode;
function GetSelectionCount: Cardinal;
function GetTopLvlItems(Index: integer): TTreeNode;
procedure GrowTopLvlItems;
function IndexOfTopLvlItem(Node: TTreeNode): integer;
procedure MoveTopLvlNode(TopLvlFromIndex, TopLvlToIndex: integer;
Node: TTreeNode);
procedure ReadData(Stream: TStream);
procedure ReadExpandedState(Stream: TStream);
procedure Repaint(ANode: TTreeNode);
procedure ShrinkTopLvlItems;
procedure SetTopLvlItems(Index: integer; AValue: TTreeNode);
procedure WriteData(Stream: TStream);
procedure WriteExpandedState(Stream: TStream);
protected
function InternalAddObject(Node: TTreeNode; const S: string;
Data: Pointer; AddMode: TAddMode): TTreeNode;
procedure DefineProperties(Filer: TFiler); override;
function GetCount: Integer;
function GetOwner: TPersistent; override;
procedure SetItem(Index: Integer; AValue: TTreeNode);
procedure SetUpdateState(Updating: Boolean);
public
constructor Create(AnOwner: TCustomTreeView);
destructor Destroy; override;
function Add(SiblingNode: TTreeNode; const S: string): TTreeNode;
function AddChild(ParentNode: TTreeNode; const S: string): TTreeNode;
function AddChildFirst(ParentNode: TTreeNode; const S: string): TTreeNode;
function AddChildObject(ParentNode: TTreeNode; const S: string;
Data: Pointer): TTreeNode;
function AddChildObjectFirst(ParentNode: TTreeNode; const S: string;
Data: Pointer): TTreeNode;
function AddFirst(SiblingNode: TTreeNode; const S: string): TTreeNode;
function AddObject(SiblingNode: TTreeNode; const S: string;
Data: Pointer): TTreeNode;
function AddObjectFirst(SiblingNode: TTreeNode; const S: string;
Data: Pointer): TTreeNode;
procedure Assign(Source: TPersistent); override;
procedure BeginUpdate;
procedure Clear;
procedure ClearMultiSelection(ClearSelected: boolean = false);
procedure SelectOnlyThis(Node: TTreeNode);
function IsMultiSelection: boolean;
procedure Delete(Node: TTreeNode);
procedure EndUpdate;
function GetEnumerator: TTreeNodesEnumerator;
function GetFirstNode: TTreeNode;
function GetLastNode: TTreeNode; // last top level node
function GetLastSubNode: TTreeNode; // absolute last node
function GetLastExpandedSubNode: TTreeNode; // absolute last node
function GetSelections(const AIndex: Integer): TTreeNode;
function FindTopLvlNode(const NodeText: string): TTreeNode;
function FindNodeWithText(const NodeText: string): TTreeNode;
function FindNodeWithData(const NodeData: Pointer): TTreeNode;
function Insert(NextNode: TTreeNode; const S: string): TTreeNode;
function InsertObject(NextNode: TTreeNode; const S: string;
Data: Pointer): TTreeNode;
function InsertBehind(PrevNode: TTreeNode; const S: string): TTreeNode;
function InsertObjectBehind(PrevNode: TTreeNode; const S: string;
Data: Pointer): TTreeNode;
procedure SelectionsChanged(ANode: TTreeNode; const AIsSelected: Boolean);
procedure SortTopLevelNodes(SortProc: TTreeNodeCompare);
procedure ConsistencyCheck;
procedure WriteDebugReport(const Prefix: string; AllNodes: boolean);
property Count: Integer read GetCount;
property Item[Index: Integer]: TTreeNode read GetNodeFromIndex; default;
property KeepCollapsedNodes: boolean
read FKeepCollapsedNodes write FKeepCollapsedNodes;
property Owner: TCustomTreeView read FOwner;
property SelectionCount: Cardinal read GetSelectionCount;
property TopLvlCount: integer read FTopLvlCount;
property TopLvlItems[Index: integer]: TTreeNode
read GetTopLvlItems write SetTopLvlItems;
end;
{ TCustomTreeView }
TTreeViewState = (
tvsScrollbarChanged,
tvsMaxRightNeedsUpdate,
tvsTopsNeedsUpdate,
tvsMaxLvlNeedsUpdate,
tvsTopItemNeedsUpdate,
tvsBottomItemNeedsUpdate,
tvsCanvasChanged,
tvsDragged,
tvsIsEditing,
tvsStateChanging,
tvsManualNotify,
tvsUpdating,
tvsPainting,
tvsDblClicked,
tvsTripleClicked,
tvsQuadClicked,
tvsSelectionChanged,
tvsEditOnMouseUp
);
TTreeViewStates = set of TTreeViewState;
TTreeViewOption = (
tvoAllowMultiselect,
tvoAutoExpand,
tvoAutoInsertMark,
tvoAutoItemHeight,
tvoHideSelection,
tvoHotTrack,
tvoKeepCollapsedNodes,
tvoReadOnly,
tvoRightClickSelect,
tvoRowSelect,
tvoShowButtons,
tvoShowLines,
tvoShowRoot,
tvoShowSeparators,
tvoToolTips,
tvoNoDoubleClickExpand,
tvoThemedDraw
);
TTreeViewOptions = set of TTreeViewOption;
const
DefaultTreeViewOptions = [tvoShowRoot, tvoShowLines, tvoShowButtons,
tvoHideSelection, tvoToolTips,
tvoKeepCollapsedNodes, tvoAutoItemHeight, tvoThemedDraw];
DefaultMultiSelectStyle = [msControlSelect];
type
TTreeViewExpandSignType = (
tvestTheme, // use themed sign
tvestPlusMinus, // use +/- sign
tvestArrow // use arrow
);
TTreeViewInsertMarkType = (
tvimNone,
tvimAsFirstChild, // or as root
tvimAsNextSibling,
tvimAsPrevSibling
);
TCustomTreeView = class(TCustomControl)
private
FBackgroundColor: TColor;
FBottomItem: TTreeNode;
FEditingItem: TTreeNode;
FExpandSignType: TTreeViewExpandSignType;
FExpandSignSize: integer;
FDefItemHeight: integer;
FDragImage: TDragImageList;
FDragNode: TTreeNode;
FIndent: integer;
FImageChangeLink: TChangeLink;
FImages: TCustomImageList;
FInsertMarkNode: TTreeNode;
FInsertMarkType: TTreeViewInsertMarkType;
FLastDropTarget: TTreeNode;
FLastHorzScrollInfo: TScrollInfo;
FLastVertScrollInfo: TScrollInfo;
FMaxLvl: integer; // maximum level of all nodes
FMaxRight: integer; // maximum text width of all nodes (needed for horizontal scrolling)
fMouseDownPos: TPoint;
FMultiSelectStyle: TMultiSelectStyle;
FOnAddition: TTVExpandedEvent;
FOnAdvancedCustomDraw: TTVAdvancedCustomDrawEvent;
FOnAdvancedCustomDrawItem: TTVAdvancedCustomDrawItemEvent;
FOnChange: TTVChangedEvent;
FOnChanging: TTVChangingEvent;
FOnCollapsed: TTVExpandedEvent;
FOnCollapsing: TTVCollapsingEvent;
FOnCompare: TTVCompareEvent;
FOnCreateNodeClass: TTVCreateNodeClassEvent;
FOnCustomCreateItem: TTVCustomCreateNodeEvent;
FOnCustomDraw: TTVCustomDrawEvent;
FOnCustomDrawItem: TTVCustomDrawItemEvent;
FOnDeletion: TTVExpandedEvent;
FOnEditing: TTVEditingEvent;
FOnEditingEnd: TTVEditingEndEvent;
FOnEdited: TTVEditedEvent;
FOnExpanded: TTVExpandedEvent;
FOnExpanding: TTVExpandingEvent;
FOnGetImageIndex: TTVExpandedEvent;
FOnGetSelectedIndex: TTVExpandedEvent;
FOnSelectionChanged: TNotifyEvent;
FOptions: TTreeViewOptions;
FRClickNode: TTreeNode;
FSaveItems: TStringList;
FScrollBars: TScrollStyle;
FScrolledLeft: integer; // horizontal scrolled pixels (hidden pixels at left)
FScrolledTop: integer; // vertical scrolled pixels (hidden pixels at top)
FSelectedColor: TColor;
FSelectedNode: TTreeNode;
fSelectionChangeEventLock: integer;
fSeparatorColor: TColor;
FSortType: TSortType;
FStateChangeLink: TChangeLink;
FStateImages: TCustomImageList;
FStates: TTreeViewStates;
FTopItem: TTreeNode;
FTreeLineColor: TColor;
FTreeLinePenStyle: TPenStyle;
FExpandSignColor : TColor;
FTreeNodes: TTreeNodes;
procedure CanvasChanged(Sender: TObject);
function GetAutoExpand: boolean;
function GetBottomItem: TTreeNode;
function GetDropTarget: TTreeNode;
function GetHideSelection: boolean;
function GetHotTrack: boolean;
function GetKeepCollapsedNodes: boolean;
function GetMultiSelect: Boolean;
function GetReadOnly: boolean;
function GetRightClickSelect: boolean;
function GetRowSelect: boolean;
function GetSelection: TTreeNode;
function GetSelectionCount: Cardinal;
function GetSelections(AIndex: Integer): TTreeNode;
function GetShowButtons: boolean;
function GetShowLines: boolean;
function GetShowRoot: boolean;
function GetShowSeparators: boolean;
function GetToolTips: boolean;
function GetTopItem: TTreeNode;
procedure ImageListChange(Sender: TObject);
procedure OnChangeTimer(Sender: TObject);
procedure SetAutoExpand(Value: Boolean);
procedure SetBackgroundColor(Value: TColor);
procedure SetBottomItem(Value: TTreeNode);
procedure SetDefaultItemHeight(Value: integer);
procedure SetExpandSignType(Value: TTreeViewExpandSignType);
procedure SetDropTarget(Value: TTreeNode);
procedure SetHideSelection(Value: Boolean);
procedure SetHotTrack(Value: Boolean);
procedure SetIndent(Value: Integer);
procedure SetImages(Value: TCustomImageList);
procedure SetInsertMarkNode(const AValue: TTreeNode);
procedure SetInsertMarkType(const AValue: TTreeViewInsertMarkType);
procedure SetKeepCollapsedNodes(Value: Boolean);
procedure SetMultiSelect(const AValue: Boolean);
procedure SetMultiSelectStyle(const AValue: TMultiSelectStyle);
procedure SetReadOnly(Value: Boolean);
procedure SetRightClickSelect(Value: Boolean);
procedure SetRowSelect(Value: Boolean);
procedure SetScrollBars(const Value: TScrollStyle);
procedure SetScrolledLeft(AValue: integer);
procedure SetScrolledTop(AValue: integer);
procedure SetSelectedColor(Value: TColor);
procedure SetSelection(Value: TTreeNode);
procedure SetSeparatorColor(const AValue: TColor);
procedure SetShowButton(Value: Boolean);
procedure SetShowLines(Value: Boolean);
procedure SetShowRoot(Value: Boolean);
procedure SetShowSeparators(Value: Boolean);
procedure SetSortType(Value: TSortType);
procedure SetStateImages(Value: TCustomImageList);
procedure SetToolTips(Value: Boolean);
procedure SetTreeLineColor(Value: TColor);
procedure SetTreeNodes(Value: TTreeNodes);
procedure SetTopItem(Value: TTreeNode);
procedure UpdateAllTops;
procedure UpdateBottomItem;
procedure UpdateExpandSignSize;
procedure UpdateMaxLvl;
procedure UpdateMaxRight;
procedure UpdateTopItem;
procedure UpdateScrollbars;
procedure InternalSelectionChanged;
protected
FChangeTimer: TTimer;
FEditor: TEdit;
class procedure WSRegisterClass; override;
class function GetControlClassDefaultSize: TSize; override;
procedure Added(Node: TTreeNode); virtual;
procedure EditorEditingDone(Sender: TObject); virtual;
procedure EditorKeyDown(Sender: TObject; var Key : Word; Shift : TShiftState); virtual;
procedure BeginAutoDrag; override;
procedure BeginEditing(ANode: TTreeNode);
function DoDragMsg(ADragMessage: TDragMessage; APosition: TPoint; ADragObject: TDragObject; ATarget: TControl; ADocking: Boolean): LRESULT; override;
function CanChange(Node: TTreeNode): Boolean; virtual;
function CanCollapse(Node: TTreeNode): Boolean; virtual;
function CanEdit(Node: TTreeNode): Boolean; virtual;
function CanExpand(Node: TTreeNode): Boolean; virtual;
function CreateNode: TTreeNode; virtual;
function CustomDraw(const ARect: TRect;
Stage: TCustomDrawStage): Boolean; virtual;
function CustomDrawItem(Node: TTreeNode; State: TCustomDrawState;
Stage: TCustomDrawStage; var PaintImages: Boolean): Boolean; virtual;
function GetDragImages: TDragImageList; override;
function GetMaxLvl: integer;
function GetMaxScrollLeft: integer;
function GetMaxScrollTop: integer;
function GetNodeAtInternalY(Y: Integer): TTreeNode;
function GetNodeAtY(Y: Integer): TTreeNode;
function GetNodeDrawAreaHeight: integer;
function GetNodeDrawAreaWidth: integer;
function IsCustomDrawn(Target: TCustomDrawTarget;
Stage: TCustomDrawStage): Boolean;
function IsNodeVisible(ANode: TTreeNode): Boolean;
function IsNodeHeightFullVisible(ANode: TTreeNode): Boolean;
function IsInsertMarkVisible: boolean; virtual;
procedure Change(Node: TTreeNode); virtual;
procedure Collapse(Node: TTreeNode); virtual;
procedure CreateWnd; override;
procedure Delete(Node: TTreeNode); virtual;
procedure DestroyWnd; override;
procedure DoEndDrag(Target: TObject; X, Y: Integer); override;
function DoMouseWheel(Shift: TShiftState; WheelDelta: Integer;
MousePos: TPoint): Boolean; override;
procedure DoPaint; virtual;
procedure DoPaintNode(Node: TTreeNode); virtual;
procedure DoStartDrag(var DragObject: TDragObject); override;
procedure DragOver(Source: TObject; X,Y: Integer; State: TDragState;
var Accept: Boolean); override;
procedure EndEditing(Cancel: boolean = false);
procedure EnsureNodeIsVisible(ANode: TTreeNode);
procedure Expand(Node: TTreeNode); virtual;
procedure GetImageIndex(Node: TTreeNode); virtual;
procedure GetSelectedIndex(Node: TTreeNode); virtual;
procedure InitializeWnd; override;
procedure KeyDown(var Key : Word; Shift : TShiftState); override;
procedure Loaded; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y:
Integer); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
override;
procedure Notification(AComponent: TComponent;
Operation: TOperation); override;
procedure Paint; override;
procedure SetDragMode(Value: TDragMode); override;
procedure SetOptions(NewOptions: TTreeViewOptions);
procedure UpdateDefaultItemHeight; virtual;
procedure WndProc(var Message: TLMessage); override;
procedure UpdateInsertMark(X,Y: integer); virtual;
procedure DoSelectionChanged; virtual;
procedure WMHScroll(var Msg: TLMScroll); message LM_HSCROLL;
procedure WMVScroll(var Msg: TLMScroll); message LM_VSCROLL;
procedure WMLButtonDown(var AMessage: TLMLButtonDown); message LM_LBUTTONDOWN;
procedure WMNotify(var AMessage: TLMNotify); message LM_NOTIFY;
procedure WMSetFocus(var Message: TLMSetFocus); message LM_SETFOCUS;
procedure WMKillFocus(var Message: TLMKillFocus); message LM_KILLFOCUS;
procedure Resize; override;
protected
property AutoExpand: Boolean read GetAutoExpand write SetAutoExpand default False;
property BorderStyle default bsSingle;
property HideSelection: Boolean
read GetHideSelection write SetHideSelection default True;
property HotTrack: Boolean read GetHotTrack write SetHotTrack default False;
property Images: TCustomImageList read FImages write SetImages;
property Indent: Integer read FIndent write SetIndent default 15;
property Items: TTreeNodes read FTreeNodes write SetTreeNodes;
property MultiSelect: Boolean read GetMultiSelect write SetMultiSelect default False;
property OnAddition: TTVExpandedEvent read FOnAddition write FOnAddition;
property OnAdvancedCustomDraw: TTVAdvancedCustomDrawEvent
read FOnAdvancedCustomDraw write FOnAdvancedCustomDraw;
property OnAdvancedCustomDrawItem: TTVAdvancedCustomDrawItemEvent
read FOnAdvancedCustomDrawItem write FOnAdvancedCustomDrawItem;
property OnChange: TTVChangedEvent read FOnChange write FOnChange;
property OnChanging: TTVChangingEvent read FOnChanging write FOnChanging;
property OnCollapsed: TTVExpandedEvent read FOnCollapsed write FOnCollapsed;
property OnCollapsing: TTVCollapsingEvent read FOnCollapsing write FOnCollapsing;
property OnCompare: TTVCompareEvent read FOnCompare write FOnCompare;
property OnCreateNodeClass: TTVCreateNodeClassEvent read FOnCreateNodeClass write FOnCreateNodeClass;
property OnCustomCreateItem: TTVCustomCreateNodeEvent read FOnCustomCreateItem write FOnCustomCreateItem;
property OnCustomDraw: TTVCustomDrawEvent read FOnCustomDraw write FOnCustomDraw;
property OnCustomDrawItem: TTVCustomDrawItemEvent
read FOnCustomDrawItem write FOnCustomDrawItem;
property OnDeletion: TTVExpandedEvent read FOnDeletion write FOnDeletion;
property OnEdited: TTVEditedEvent read FOnEdited write FOnEdited;
property OnEditing: TTVEditingEvent read FOnEditing write FOnEditing;
property OnEditingEnd: TTVEditingEndEvent read FOnEditingEnd write FOnEditingEnd;
property OnExpanded: TTVExpandedEvent read FOnExpanded write FOnExpanded;
property OnExpanding: TTVExpandingEvent read FOnExpanding write FOnExpanding;
property OnGetImageIndex: TTVExpandedEvent
read FOnGetImageIndex write FOnGetImageIndex;
property OnGetSelectedIndex: TTVExpandedEvent
read FOnGetSelectedIndex write FOnGetSelectedIndex;
property OnSelectionChanged: TNotifyEvent
read FOnSelectionChanged write FOnSelectionChanged;
property ReadOnly: Boolean read GetReadOnly write SetReadOnly default False;
property RightClickSelect: Boolean
read GetRightClickSelect write SetRightClickSelect default False;
property RowSelect: Boolean read GetRowSelect write SetRowSelect default False;
property ScrolledLeft: integer read FScrolledLeft write SetScrolledLeft;
property ScrolledTop: integer read FScrolledTop write SetScrolledTop;
property ShowButtons: Boolean read GetShowButtons write SetShowButton default True;
property ShowLines: Boolean read GetShowLines write SetShowLines default True;
property ShowRoot: Boolean read GetShowRoot write SetShowRoot default True;
property ShowSeparators: Boolean read GetShowSeparators write SetShowSeparators default True;
property SortType: TSortType read FSortType write SetSortType default stNone;
property StateImages: TCustomImageList read FStateImages write SetStateImages;
property ToolTips: Boolean read GetToolTips write SetToolTips default True;
public
constructor Create(AnOwner: TComponent); override;
destructor Destroy; override;
function AlphaSort: Boolean;
procedure ConsistencyCheck;
function CustomSort(SortProc: TTreeNodeCompare): Boolean;
function DefaultTreeViewSort(Node1, Node2: TTreeNode): Integer;
procedure EraseBackground(DC: HDC); override;
function GetHitTestInfoAt(X, Y: Integer): THitTests;
function GetNodeAt(X, Y: Integer): TTreeNode;
procedure GetInsertMarkAt(X, Y: Integer; out AnInsertMarkNode: TTreeNode;
out AnInsertMarkType: TTreeViewInsertMarkType);
procedure SetInsertMark(AnInsertMarkNode: TTreeNode;
AnInsertMarkType: TTreeViewInsertMarkType);
procedure SetInsertMarkAt(X,Y: integer); virtual;
procedure Invalidate; override;
function IsEditing: Boolean;
procedure BeginUpdate;
procedure EndUpdate;
procedure FullCollapse;
procedure FullExpand;
procedure LoadFromFile(const FileName: string);
procedure LoadFromStream(Stream: TStream);
procedure SaveToFile(const FileName: string);
procedure SaveToStream(Stream: TStream);
procedure WriteDebugReport(const Prefix: string; AllNodes: boolean);
procedure LockSelectionChangeEvent;
procedure UnlockSelectionChangeEvent;
function GetFirstMultiSelected: TTreeNode;
function GetLastMultiSelected: TTreeNode;
function SelectionVisible: boolean;
procedure MakeSelectionVisible;
public
property BackgroundColor: TColor
read FBackgroundColor write SetBackgroundColor default clWindow;
property BorderWidth default 0;
property BottomItem: TTreeNode read GetBottomItem write SetBottomItem;
property DefaultItemHeight: integer
read FDefItemHeight write SetDefaultItemHeight default 20;
property DropTarget: TTreeNode read GetDropTarget write SetDropTarget;
property ExpandSignType: TTreeViewExpandSignType
read FExpandSignType write SetExpandSignType default tvestTheme;
property InsertMarkNode: TTreeNode read FInsertMarkNode write SetInsertMarkNode;
property InsertMarkType: TTreeViewInsertMarkType read FInsertMarkType write SetInsertMarkType;
property KeepCollapsedNodes: boolean
read GetKeepCollapsedNodes write SetKeepCollapsedNodes;
property MultiSelectStyle: TMultiSelectStyle read FMultiSelectStyle
write SetMultiSelectStyle default DefaultMultiSelectStyle;
property Options: TTreeViewOptions read FOptions write SetOptions default DefaultTreeViewOptions;
property ScrollBars: TScrollStyle
read FScrollBars write SetScrollBars default ssBoth;
property Selected: TTreeNode read GetSelection write SetSelection;
property SelectionColor: TColor read FSelectedColor write SetSelectedColor default clHighlight;
property SelectionCount: Cardinal read GetSelectionCount;
property Selections[AIndex: Integer]: TTreeNode read GetSelections;
property SeparatorColor: TColor read fSeparatorColor write SetSeparatorColor default clGray;
property TopItem: TTreeNode read GetTopItem write SetTopItem;
property TreeLineColor: TColor read FTreeLineColor write FTreeLineColor default clWindowFrame;
property TreeLinePenStyle: TPenStyle read FTreeLinePenStyle write FTreeLinePenStyle default psPattern;
property ExpandSignColor: TColor read FExpandSignColor write FExpandSignColor default clWindowFrame;
published
property TabStop default true;
end;
{ TTreeView }
TTreeView = class(TCustomTreeView)
published
property Align;
property Anchors;
property AutoExpand;
property BorderSpacing;
//property BiDiMode;
property BackgroundColor;
property BorderStyle;
property BorderWidth;
property Color;
property Constraints;
property DefaultItemHeight;
property DragKind;
property DragCursor;
property DragMode;
property Enabled;
property ExpandSignType;
property Font;
property HideSelection;
property HotTrack;
property Images;
property Indent;
property MultiSelect;
property MultiSelectStyle;
//property ParentBiDiMode;
property ParentColor default False;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property ReadOnly;
property RightClickSelect;
property RowSelect;
property ScrollBars;
property SelectionColor;
property ShowButtons;
property ShowHint;
property ShowLines;
property ShowRoot;
property SortType;
property StateImages;
property TabOrder;
property TabStop default True;
property Tag;
property ToolTips;
property Visible;
property OnAddition;
property OnAdvancedCustomDraw;
property OnAdvancedCustomDrawItem;
property OnChange;
property OnChanging;
property OnClick;
property OnCollapsed;
property OnCollapsing;
property OnCompare;
property OnContextPopup;
property OnCreateNodeClass;
property OnCustomCreateItem;
property OnCustomDraw;
property OnCustomDrawItem;
property OnDblClick;
property OnDeletion;
property OnDragDrop;
property OnDragOver;
property OnEdited;
property OnEditing;
property OnEditingEnd;
//property OnEndDock;
property OnEndDrag;
property OnEnter;
property OnExit;
property OnExpanded;
property OnExpanding;
property OnGetImageIndex;
property OnGetSelectedIndex;
property OnKeyDown;
property OnKeyPress;
property OnKeyUp;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnSelectionChanged;
property OnShowHint;
//property OnStartDock;
property OnStartDrag;
property OnUTF8KeyPress;
property Options;
property Items;
property TreeLineColor;
property TreeLinePenStyle;
property ExpandSignColor;
end;
{ TTreeNodeExpandedState }
{ class to store and restore the expanded state of a TTreeView
The nodes are identified by their Text property.
Usage example:
// save old expanded state
OldExpanded:=TTreeNodeExpandedState.Create(ATreeView);
... change a lot of nodes ...
// restore old expanded state
OldExpanded.Apply(ATreeView);
OldExpanded.Free;
}
TTreeNodeExpandedState = class
NodeText: string;
Children: TAvgLvlTree;
constructor Create(FirstTreeNode: TTreeNode);
constructor Create(TreeView: TCustomTreeView);
destructor Destroy; override;
procedure Clear;
procedure CreateChildNodes(FirstTreeNode: TTreeNode);
procedure Apply(FirstTreeNode: TTreeNode);
procedure Apply(TreeView: TCustomTreeView);
end;
TCustomHeaderControl = class;
{ THeaderSection }
THeaderSectionState =
(
hsNormal,
hsHot,
hsPressed
);
THeaderSection = class(TCollectionItem)
private
FAlignment: TAlignment;
FImageIndex: TImageIndex;
FMinWidth: Integer;
FMaxWidth: Integer;
FState: THeaderSectionState;
FText: TCaption;
FVisible: Boolean;
FWidth: Integer;
FOriginalIndex: Integer;
function GetWidth: Integer;
function GetLeft: Integer;
function GetRight: Integer;
procedure SetAlignment(const AValue: TAlignment);
procedure SetMaxWidth(AValue: Integer);
procedure SetMinWidth(AValue: Integer);
procedure SetState(const AValue: THeaderSectionState);
procedure SetText(const Value: TCaption);
procedure SetVisible(const AValue: Boolean);
procedure SetWidth(Value: Integer);
procedure SetImageIndex(const Value: TImageIndex);
procedure CheckConstraints;
protected
function GetDisplayName: string; override;
public
constructor Create(ACollection: TCollection); override;
procedure Assign(Source: TPersistent); override;
property Left: Integer read GetLeft;
property Right: Integer read GetRight;
property State: THeaderSectionState read FState write SetState;
published
property Alignment: TAlignment read FAlignment write SetAlignment;
property ImageIndex: TImageIndex read FImageIndex write SetImageIndex default -1;
property MaxWidth: Integer read FMaxWidth write SetMaxWidth default 10000;
property MinWidth: Integer read FMinWidth write SetMinWidth default 0;
property Text: TCaption read FText write SetText;
property Width: Integer read GetWidth write SetWidth;
property Visible: Boolean read FVisible write SetVisible;
//index which doesn't change when the user reorders the sections
property OriginalIndex: Integer read FOriginalIndex;
end;
THeaderSectionClass = class of THeaderSection;
{ THeaderSections }
THeaderSections = class(TCollection)
private
FHeaderControl: TCustomHeaderControl;
function GetItem(Index: Integer): THeaderSection;
procedure SetItem(Index: Integer; Value: THeaderSection);
protected
function GetOwner: TPersistent; override;
procedure Update(Item: TCollectionItem); override;
public
constructor Create(HeaderControl: TCustomHeaderControl);
function Add: THeaderSection;
function AddItem(Item: THeaderSection; Index: Integer): THeaderSection;
function Insert(Index: Integer): THeaderSection;
procedure Delete(Index: Integer);
property Items[Index: Integer]: THeaderSection read GetItem write SetItem; default;
end;
TSectionTrackState = (tsTrackBegin, tsTrackMove, tsTrackEnd);
TCustomSectionTrackEvent = procedure(HeaderControl: TCustomHeaderControl; Section: THeaderSection; Width: Integer; State: TSectionTrackState) of object;
TSectionDragEvent = procedure (Sender: TObject; FromSection, ToSection: THeaderSection;
var AllowDrag: Boolean) of object;
TCustomSectionNotifyEvent = procedure(HeaderControl: TCustomHeaderControl;
Section: THeaderSection) of object;
TCustomHCCreateSectionClassEvent = procedure(Sender: TCustomHeaderControl;
var SectionClass: THeaderSectionClass) of object;
{ TCustomHeaderControl }
TCustomHeaderControl = class(TCustomControl)
private
FDragReorder: boolean;
FSections: THeaderSections;
FImages: TCustomImageList;
FPaintRect: TRect;
FDown: Boolean;
FDownPoint: TPoint;
FTracking, FDragging: Boolean;
FEndDragSectionIndex: longint;
FSelectedSection: longint;
FMouseInControl: Boolean;
FOnSectionClick: TCustomSectionNotifyEvent;
FOnSectionResize: TCustomSectionNotifyEvent;
FOnSectionTrack: TCustomSectionTrackEvent;
FOnSectionSeparatorDblClick: TCustomSectionNotifyEvent;
FOnSectionDrag: TSectionDragEvent;
FOnSectionEndDrag: TNotifyEvent;
FOnCreateSectionClass: TCustomHCCreateSectionClassEvent;
function GetSectionFromOriginalIndex(OriginalIndex: Integer): THeaderSection;
procedure SetImages(const AValue: TCustomImageList);
procedure SetSections(const AValue: THeaderSections);
procedure UpdateSection(Index: Integer);
procedure UpdateSections;
protected
function CreateSection: THeaderSection; virtual;
function CreateSections: THeaderSections; virtual;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure SectionClick(Section: THeaderSection); virtual;
procedure SectionResize(Section: THeaderSection); virtual;
procedure SectionTrack(Section: THeaderSection; State: TSectionTrackState); virtual;
procedure SectionSeparatorDblClick(Section: THeaderSection); virtual;
procedure SectionEndDrag; virtual;
function SectionDrag(FromSection, ToSection: THeaderSection): Boolean; virtual;
procedure MouseEnter; override;
procedure MouseLeave; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer); override;
procedure UpdateState;
class function GetControlClassDefaultSize: TSize; override;
public
property SectionFromOriginalIndex[OriginalIndex: Integer]: THeaderSection read GetSectionFromOriginalIndex;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Click; override;
procedure DblClick; override;
function GetSectionAt(P: TPoint): Integer;
procedure Paint; override;
procedure PaintSection(Index: Integer); virtual;
published
property DragReorder: boolean read FDragReorder write FDragReorder;
property Images: TCustomImageList read FImages write SetImages;
property Sections: THeaderSections read FSections write SetSections;
property OnSectionDrag: TSectionDragEvent read FOnSectionDrag
write FOnSectionDrag;
property OnSectionEndDrag: TNotifyEvent read FOnSectionEndDrag write FOnSectionEndDrag;
property OnSectionClick: TCustomSectionNotifyEvent read FOnSectionClick
write FOnSectionClick;
property OnSectionResize: TCustomSectionNotifyEvent read FOnSectionResize
write FOnSectionResize;
property OnSectionTrack: TCustomSectionTrackEvent read FOnSectionTrack
write FOnSectionTrack;
property OnSectionSeparatorDblClick: TCustomSectionNotifyEvent read FOnSectionSeparatorDblClick
write FOnSectionSeparatorDblClick;
property OnCreateSectionClass: TCustomHCCreateSectionClassEvent read FOnCreateSectionClass
write FOnCreateSectionClass;
end;
{ THeaderControl }
THeaderControl = class(TCustomHeaderControl)
published
property Align;
property Anchors;
property BiDiMode;
property BorderWidth;
property BorderSpacing;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property Font;
property Images;
property Constraints;
property Sections;
property ShowHint;
property ParentBiDiMode;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property Visible;
// events
property OnContextPopup;
property OnCreateSectionClass;
property OnDragDrop;
property OnDragOver;
property OnEndDock;
property OnEndDrag;
property OnMouseDown;
property OnMouseEnter;
property OnMouseLeave;
property OnMouseMove;
property OnMouseUp;
property OnResize;
property OnSectionClick;
property OnSectionResize;
property OnSectionTrack;
end;
function CompareExpandedNodes(Data1, Data2: Pointer): integer;
function CompareTextWithExpandedNode(Key, Data: Pointer): integer;
procedure Register;
implementation
// !!! Avoid unit circles. Only add units if really needed.
uses
WSComCtrls;
const
ScrollBarWidth = 0;
AllPanelsParts = [Low(TPanelPart)..High(TPanelPart)];
{$I statusbar.inc}
{$I statuspanel.inc}
{$I statuspanels.inc}
{$I tabsheet.inc}
{$I pagecontrol.inc}
{$I tabcontrol.inc}
{$I listcolumns.inc}
{$I listcolumn.inc}
{$I listitem.inc}
{$I listitems.inc}
{$I customlistview.inc}
{$I progressbar.inc}
{$I customupdown.inc}
{$I toolbutton.inc}
{$I toolbar.inc}
{$I trackbar.inc}
{$I treeview.inc}
{$I headercontrol.inc}
{ TTreeNodesEnumerator }
function TTreeNodesEnumerator.GetCurrent: TTreeNode;
begin
Result := FNodes[FPosition];
end;
constructor TTreeNodesEnumerator.Create(ANodes: TTreeNodes);
begin
inherited Create;
FNodes := ANodes;
FPosition := -1;
end;
function TTreeNodesEnumerator.MoveNext: Boolean;
begin
inc(FPosition);
Result := FPosition < FNodes.Count;
end;
{ TListItemsEnumerator }
function TListItemsEnumerator.GetCurrent: TListItem;
begin
Result := FItems[FPosition];
end;
constructor TListItemsEnumerator.Create(AItems: TListItems);
begin
inherited Create;
FItems := AItems;
FPosition := -1;
end;
function TListItemsEnumerator.MoveNext: Boolean;
begin
inc(FPosition);
Result := FPosition < FItems.Count;
end;
{ TToolBarEnumerator }
function TToolBarEnumerator.GetCurrent: TToolButton;
begin
Result := FToolBar.Buttons[FPosition];
end;
constructor TToolBarEnumerator.Create(AToolBar: TToolBar);
begin
inherited Create;
FToolBar := AToolBar;
FPosition := -1;
end;
function TToolBarEnumerator.MoveNext: Boolean;
begin
inc(FPosition);
Result := FPosition < FToolBar.ButtonCount;
end;
procedure Register;
begin
RegisterComponents('Common Controls',[TTrackbar,TProgressBar,TTreeView,
TListView,TStatusBar,TToolBar,TUpDown,TPageControl,TTabControl, THeaderControl]);
RegisterNoIcon([TToolButton,TTabSheet]);
end;
end.
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