libgtkmm-3.0-dev 3.18.0-1 / usr / include / gdkmm-3.0 / gdkmm / screen.h

// -*- c++ -*-
// Generated by gmmproc 2.46.1 -- DO NOT MODIFY!
#ifndef _GDKMM_SCREEN_H
#define _GDKMM_SCREEN_H


#include <glibmm/ustring.h>
#include <sigc++/sigc++.h>

/*
 * Copyright (C) 1998-2002 The gtkmm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <gdkmm/rectangle.h>
#include <glibmm/object.h>
#include <cairomm/fontoptions.h>


#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GdkScreen GdkScreen;
typedef struct _GdkScreenClass GdkScreenClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */


#ifndef DOXYGEN_SHOULD_SKIP_THIS
namespace Gdk
{ class Screen_Class; } // namespace Gdk
#endif //DOXYGEN_SHOULD_SKIP_THIS

namespace Gdk
{

class Display;
class Visual;
class Window;

/** Object representing a physical screen
 * Gdk::Screen objects are the GDK representation of a physical screen. It is used throughout GDK and GTK+ to specify
 * which screen the top level windows are to be displayed on. It is also used to query the screen specification and
 * default settings such as the screen width (get_width()), etc.
 * Note that a screen may consist of multiple monitors which are merged to form a large screen area.
 */

class Screen : public Glib::Object
{
  
#ifndef DOXYGEN_SHOULD_SKIP_THIS

public:
  typedef Screen CppObjectType;
  typedef Screen_Class CppClassType;
  typedef GdkScreen BaseObjectType;
  typedef GdkScreenClass BaseClassType;

  // noncopyable
  Screen(const Screen&) = delete;
  Screen& operator=(const Screen&) = delete;

private:  friend class Screen_Class;
  static CppClassType screen_class_;

protected:
  explicit Screen(const Glib::ConstructParams& construct_params);
  explicit Screen(GdkScreen* castitem);

#endif /* DOXYGEN_SHOULD_SKIP_THIS */

public:

  Screen(Screen&& src) noexcept;
  Screen& operator=(Screen&& src) noexcept;

  virtual ~Screen() noexcept;

  /** Get the GType for this class, for use with the underlying GObject type system.
   */
  static GType get_type()      G_GNUC_CONST;

#ifndef DOXYGEN_SHOULD_SKIP_THIS


  static GType get_base_type() G_GNUC_CONST;
#endif

  ///Provides access to the underlying C GObject.
  GdkScreen*       gobj()       { return reinterpret_cast<GdkScreen*>(gobject_); }

  ///Provides access to the underlying C GObject.
  const GdkScreen* gobj() const { return reinterpret_cast<GdkScreen*>(gobject_); }

  ///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
  GdkScreen* gobj_copy();

private:

protected:

public:
  
  /** Get the system’s default visual for @a screen.
   * This is the visual for the root window of the display.
   * The return value should not be freed.
   * 
   * @newin{2,2}
   * 
   * @return The system visual.
   */
  Glib::RefPtr<Visual> get_system_visual();
  
  /** Get the system’s default visual for @a screen.
   * This is the visual for the root window of the display.
   * The return value should not be freed.
   * 
   * @newin{2,2}
   * 
   * @return The system visual.
   */
  Glib::RefPtr<const Visual> get_system_visual() const;

  
  /** Gets a visual to use for creating windows with an alpha channel.
   * The windowing system on which GTK+ is running
   * may not support this capability, in which case <tt>0</tt> will
   * be returned. Even if a non-<tt>0</tt> value is returned, its
   * possible that the window’s alpha channel won’t be honored
   * when displaying the window on the screen: in particular, for
   * X an appropriate windowing manager and compositing manager
   * must be running to provide appropriate display.
   * 
   * This functionality is not implemented in the Windows backend.
   * 
   * For setting an overall opacity for a top-level window, see
   * Gdk::Window::set_opacity().
   * 
   * @newin{2,8}
   * 
   * @return A visual to use for windows
   * with an alpha channel or <tt>0</tt> if the capability is not
   * available.
   */
  Glib::RefPtr<Visual> get_rgba_visual();
  
  /** Gets a visual to use for creating windows with an alpha channel.
   * The windowing system on which GTK+ is running
   * may not support this capability, in which case <tt>0</tt> will
   * be returned. Even if a non-<tt>0</tt> value is returned, its
   * possible that the window’s alpha channel won’t be honored
   * when displaying the window on the screen: in particular, for
   * X an appropriate windowing manager and compositing manager
   * must be running to provide appropriate display.
   * 
   * This functionality is not implemented in the Windows backend.
   * 
   * For setting an overall opacity for a top-level window, see
   * Gdk::Window::set_opacity().
   * 
   * @newin{2,8}
   * 
   * @return A visual to use for windows
   * with an alpha channel or <tt>0</tt> if the capability is not
   * available.
   */
  Glib::RefPtr<const Visual> get_rgba_visual() const;

  
  /** Returns whether windows with an RGBA visual can reasonably
   * be expected to have their alpha channel drawn correctly on
   * the screen.
   * 
   * On X11 this function returns whether a compositing manager is
   * compositing @a screen.
   * 
   * @newin{2,10}
   * 
   * @return Whether windows with RGBA visuals can reasonably be
   * expected to have their alpha channels drawn correctly on the screen.
   */
  bool is_composited() const;

  
  /** Gets the root window of @a screen.
   * 
   * @newin{2,2}
   * 
   * @return The root window.
   */
  Glib::RefPtr<Window> get_root_window();
  
  /** Gets the root window of @a screen.
   * 
   * @newin{2,2}
   * 
   * @return The root window.
   */
  Glib::RefPtr<const Window> get_root_window() const;

  
  /** Gets the display to which the @a screen belongs.
   * 
   * @newin{2,2}
   * 
   * @return The display to which @a screen belongs.
   */
  Glib::RefPtr<Display> get_display();
  
  /** Gets the display to which the @a screen belongs.
   * 
   * @newin{2,2}
   * 
   * @return The display to which @a screen belongs.
   */
  Glib::RefPtr<const Display> get_display() const;

  
  /** Gets the index of @a screen among the screens in the display
   * to which it belongs. (See get_display())
   * 
   * @newin{2,2}
   * 
   * @return The index.
   */
  int get_number() const;
  
  /** Gets the width of @a screen in pixels
   * 
   * @newin{2,2}
   * 
   * @return The width of @a screen in pixels.
   */
  int get_width() const;
  
  /** Gets the height of @a screen in pixels
   * 
   * @newin{2,2}
   * 
   * @return The height of @a screen in pixels.
   */
  int get_height() const;
  
  /** Gets the width of @a screen in millimeters.
   * 
   * Note that this value is somewhat ill-defined when the screen
   * has multiple monitors of different resolution. It is recommended
   * to use the monitor dimensions instead.
   * 
   * @newin{2,2}
   * 
   * @return The width of @a screen in millimeters.
   */
  int get_width_mm() const;
  
  /** Returns the height of @a screen in millimeters.
   * 
   * Note that this value is somewhat ill-defined when the screen
   * has multiple monitors of different resolution. It is recommended
   * to use the monitor dimensions instead.
   * 
   * @newin{2,2}
   * 
   * @return The heigth of @a screen in millimeters.
   */
  int get_height_mm() const;

 
  /** Lists the available visuals for the specified @a screen.
   * A visual describes a hardware image data format.
   * For example, a visual might support 24-bit color, or 8-bit color,
   * and might expect pixels to be in a certain format.
   * @newin{2,2}
   * 
   * @return A list of visuals.
   */
  std::vector< Glib::RefPtr<Visual> > list_visuals();

 
  /** Obtains a list of all toplevel windows known to GDK on the screen @a screen.
   * A toplevel window is a child of the root window (see
   * gdk_get_default_root_window()).
   * @newin{2,2}
   * 
   * @return List of toplevel windows.
   */
  std::vector< Glib::RefPtr<Window> > get_toplevel_windows();

  
  /** Determines the name to pass to Gdk::Display::open() to get
   * a Gdk::Display with this screen as the default screen.
   * 
   * @newin{2,2}
   * 
   * @return The name.
   */
  Glib::ustring make_display_name();

  
  /** Returns the number of monitors which @a screen consists of.
   * 
   * @newin{2,2}
   * 
   * @return Number of monitors which @a screen consists of.
   */
  int get_n_monitors() const;
  
  /** Gets the primary monitor for @a screen.  The primary monitor
   * is considered the monitor where the “main desktop” lives.
   * While normal application windows typically allow the window
   * manager to place the windows, specialized desktop applications
   * such as panels should place themselves on the primary monitor.
   * 
   * If no primary monitor is configured by the user, the return value
   * will be 0, defaulting to the first monitor.
   * 
   * @newin{2,20}
   * 
   * @return An integer index for the primary monitor, or 0 if none is configured.
   */
  int get_primary_monitor() const;
  
  /** Retrieves the Gdk::Rectangle representing the size and position of
   * the individual monitor within the entire screen area.
   * 
   * Monitor numbers start at 0. To obtain the number of monitors of
   *  @a screen, use get_n_monitors().
   * 
   * Note that the size of the entire screen area can be retrieved via
   * get_width() and get_height().
   * 
   * @newin{2,2}
   * 
   * @param monitor_num The monitor number.
   * @param dest A Gdk::Rectangle to be filled with
   * the monitor geometry.
   */
  void get_monitor_geometry(int monitor_num, Rectangle& dest) const;

  /** Retrieves the Gdk::Rectangle representing the size and position of
   * the "work area" on a monitor within the entire screen area.
   *
   * The work area should be considered when positioning menus and
   * similar popups, to avoid placing them below panels, docks or other
   * desktop components.
   *
   * Monitor numbers start at 0. To obtain the number of monitors of
   *  @a screen, use get_n_monitors().
   *
   * @newin{3,6}
   *
   * @param monitor_num The monitor number.
   * @result The monitor workarea.
   */
  Rectangle get_monitor_workarea(int monitor_num = 0) const;
  

  /** Returns the monitor number in which the point ( @a x, @a y) is located.
   * 
   * @newin{2,2}
   * 
   * @param x The x coordinate in the virtual screen.
   * @param y The y coordinate in the virtual screen.
   * @return The monitor number in which the point ( @a x, @a y) lies, or
   * a monitor close to ( @a x, @a y) if the point is not in any monitor.
   */
  int get_monitor_at_point(int x, int y) const;
  
  /** Returns the number of the monitor in which the largest area of the
   * bounding rectangle of @a window resides.
   * 
   * @newin{2,2}
   * 
   * @param window A Gdk::Window.
   * @return The monitor number in which most of @a window is located,
   * or if @a window does not intersect any monitors, a monitor,
   * close to @a window.
   */
  int get_monitor_at_window(const Glib::RefPtr<Window>& window) const;

  
  /** Gets the width in millimeters of the specified monitor, if available.
   * 
   * @newin{2,14}
   * 
   * @param monitor_num Number of the monitor, between 0 and gdk_screen_get_n_monitors (screen).
   * @return The width of the monitor, or -1 if not available.
   */
  int get_monitor_width_mm(int monitor_num) const;
  
  /** Gets the height in millimeters of the specified monitor.
   * 
   * @newin{2,14}
   * 
   * @param monitor_num Number of the monitor, between 0 and gdk_screen_get_n_monitors (screen).
   * @return The height of the monitor, or -1 if not available.
   */
  int get_monitor_height_mm(int monitor_num) const;
  
  /** Returns the output name of the specified monitor.
   * Usually something like VGA, DVI, or TV, not the actual
   * product name of the display device.
   * 
   * @newin{2,14}
   * 
   * @param monitor_num Number of the monitor, between 0 and gdk_screen_get_n_monitors (screen).
   * @return A newly-allocated string containing the name
   * of the monitor, or <tt>0</tt> if the name cannot be determined.
   */
  Glib::ustring get_monitor_plug_name(int monitor_num) const;
  
  
  /** Returns the internal scale factor that maps from monitor coordiantes
   * to the actual device pixels. On traditional systems this is 1, but
   * on very high density outputs this can be a higher value (often 2).
   * 
   * This can be used if you want to create pixel based data for a
   * particula monitor, but most of the time you’re drawing to a window
   * where it is better to use Gdk::Window::get_scale_factor() instead.
   * 
   * @newin{3,10}
   * 
   * @param monitor_num Number of the monitor, between 0 and gdk_screen_get_n_monitors (screen).
   * @return The scale factor.
   */
  int get_monitor_scale_factor(int monitor_num);

  
  /** Gets the default screen for the default display. (See
   * Gdk::Display::get_default()).
   * 
   * @newin{2,2}
   * 
   * @return A Gdk::Screen, or <tt>0</tt> if
   * there is no default display.
   */
  static Glib::RefPtr<Screen> get_default();

  template <class ValueType>
  bool get_setting(const Glib::ustring& name, ValueType& value) const;
  

  /** Sets the default font options for the screen. These
   * options will be set on any Pango::Context’s newly created
   * with gdk_pango_context_get_for_screen(). Changing the
   * default set of font options does not affect contexts that
   * have already been created.
   * 
   * @newin{2,10}
   * 
   * @param options A #cairo_font_options_t, or <tt>0</tt> to unset any
   * previously set default font options.
   */
  void set_font_options(const ::Cairo::FontOptions& options);

  // Note: This returns a const, so we assume that we must copy it:
   

  /** Gets any options previously set with set_font_options().
   * 
   * @newin{2,10}
   * 
   * @return The current font options, or <tt>0</tt> if no
   * default font options have been set.
   */
  ::Cairo::FontOptions get_font_options() const;

  
  /** Sets the resolution for font handling on the screen. This is a
   * scale factor between points specified in a Pango::FontDescription
   * and cairo units. The default value is 96, meaning that a 10 point
   * font will be 13 units high. (10 * 96. / 72. = 13.3).
   * 
   * @newin{2,10}
   * 
   * @param dpi The resolution in “dots per inch”. (Physical inches aren’t actually
   * involved; the terminology is conventional.).
   */
  void set_resolution(double dpi);
  
  /** Gets the resolution for font handling on the screen; see
   * set_resolution() for full details.
   * 
   * @newin{2,10}
   * 
   * @return The current resolution, or -1 if no resolution
   * has been set.
   */
  double get_resolution() const;

  
  /** Returns the screen’s currently active window.
   * 
   * On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
   * on the root window, as described in the
   * [Extended Window Manager Hints](http://www.freedesktop.org/Standards/wm-spec).
   * If there is no currently currently active
   * window, or the window manager does not support the
   * _NET_ACTIVE_WINDOW hint, this function returns <tt>0</tt>.
   * 
   * On other platforms, this function may return <tt>0</tt>, depending on whether
   * it is implementable on that platform.
   * 
   * The returned window should be unrefed using Glib::object_unref() when
   * no longer needed.
   * 
   * @newin{2,10}
   * 
   * @return The currently active window,
   * or <tt>0</tt>.
   */
  Glib::RefPtr<Gdk::Window> get_active_window();
  
  /** Returns the screen’s currently active window.
   * 
   * On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
   * on the root window, as described in the
   * [Extended Window Manager Hints](http://www.freedesktop.org/Standards/wm-spec).
   * If there is no currently currently active
   * window, or the window manager does not support the
   * _NET_ACTIVE_WINDOW hint, this function returns <tt>0</tt>.
   * 
   * On other platforms, this function may return <tt>0</tt>, depending on whether
   * it is implementable on that platform.
   * 
   * The returned window should be unrefed using Glib::object_unref() when
   * no longer needed.
   * 
   * @newin{2,10}
   * 
   * @return The currently active window,
   * or <tt>0</tt>.
   */
  Glib::RefPtr<const Gdk::Window> get_active_window() const;

 
  /** Returns a List of Gdk::Windows representing the current
   * window stack.
   * 
   * On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
   * property on the root window, as described in the
   * [Extended Window Manager Hints](http://www.freedesktop.org/Standards/wm-spec).
   * If the window manager does not support the
   * _NET_CLIENT_LIST_STACKING hint, this function returns <tt>0</tt>.
   * 
   * On other platforms, this function may return <tt>0</tt>, depending on whether
   * it is implementable on that platform.
   * 
   * The returned list is newly allocated and owns references to the
   * windows it contains, so it should be freed using Glib::list_free() and
   * its windows unrefed using Glib::object_unref() when no longer needed.
   * 
   * @newin{2,10}
   * 
   * @return A
   * list of Gdk::Windows for the current window stack, or <tt>0</tt>.
   */
  std::vector< Glib::RefPtr<Window> > get_window_stack();

  //We use no_default_handler because GdkDisplayManagerClass is private.

  
  /**
   * @par Slot Prototype:
   * <tt>void on_my_%size_changed()</tt>
   *
   * The signal_size_changed() signal is emitted when the pixel width or 
   * height of a screen changes.
   * 
   * @newin{2,2}
   */

  Glib::SignalProxy0< void > signal_size_changed();

  
  /**
   * @par Slot Prototype:
   * <tt>void on_my_%composited_changed()</tt>
   *
   * The signal_composited_changed() signal is emitted when the composited
   * status of the screen changes
   * 
   * @newin{2,10}
   */

  Glib::SignalProxy0< void > signal_composited_changed();

  
  /**
   * @par Slot Prototype:
   * <tt>void on_my_%monitors_changed()</tt>
   *
   * The signal_monitors_changed() signal is emitted when the number, size
   * or position of the monitors attached to the screen change. 
   * 
   * Only for X11 and OS X for now. A future implementation for Win32
   * may be a possibility.
   * 
   * @newin{2,14}
   */

  Glib::SignalProxy0< void > signal_monitors_changed();


  /** The default font options for the screen.
   *
   * @return A PropertyProxy that allows you to get or set the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy< ::Cairo::FontOptions > property_font_options() ;

/** The default font options for the screen.
   *
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< ::Cairo::FontOptions > property_font_options() const;

  /** The resolution for fonts on the screen.
   *
   * @return A PropertyProxy that allows you to get or set the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy< double > property_resolution() ;

/** The resolution for fonts on the screen.
   *
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< double > property_resolution() const;


public:

public:
  //C++ methods used to invoke GTK+ virtual functions:

protected:
  //GTK+ Virtual Functions (override these to change behaviour):

  //Default Signal Handlers::


};

template <class ValueType>
bool Screen::get_setting(const Glib::ustring& name, ValueType& value) const
{
  Glib::Value<ValueType> glibmmvalue;
  glibmmvalue.init(Glib::Value<ValueType>::value_type());

  gboolean result = gdk_screen_get_setting(const_cast<GdkScreen*>(gobj()), name.c_str(), glibmmvalue.gobj());

  value = glibmmvalue.get();
  return result;
}

} // namespace Gdk


namespace Glib
{
  /** A Glib::wrap() method for this object.
   * 
   * @param object The C instance.
   * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
   * @result A C++ instance that wraps this C instance.
   *
   * @relates Gdk::Screen
   */
  Glib::RefPtr<Gdk::Screen> wrap(GdkScreen* object, bool take_copy = false);
}


#endif /* _GDKMM_SCREEN_H */