/usr/share/doc/xviewg/examples/color/example2.c is in xview-examples 3.2p1.4-28.1.
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* xv_color.c
* This program demonstrates the use of color in XView. It allows the
* user to choose the foreground and background colors of the various
* objects in an interactive manner.
*
*/
#include <xview/xview.h>
#include <xview/textsw.h>
#include <xview/panel.h>
#include <xview/icon.h>
#include <xview/cms.h>
#include <xview/svrimage.h>
#define WHITE 0
#define RED 1
#define GREEN 2
#define BLUE 3
#define YELLOW 4
#define PINK 5
#define GRAY 6
#define BLACK 7
#define NUM_COLORS 8
#define HEIGHT 500
#define WIDTH 500
#define CHIP_HEIGHT 16
#define CHIP_WIDTH 16
#define SELECT_TEXTSW 0
#define SELECT_TEXTSW_VIEW 1
#define SELECT_ICON 2
/* Icon data */
static unsigned short icon_bits[]={
#include <images/cardback.icon>
};
mpr_static(icon_image, ICON_DEFAULT_WIDTH, ICON_DEFAULT_HEIGHT, 1,
icon_bits);
static unsigned short black_data[] = {
#include <images/black.cursor>
};
/* object currently selected for color change */
int current_selection = SELECT_TEXTSW;
/* flag to indicate if foreground or background is to be changed */
int fg = TRUE;
Textsw textsw;
Panel panel;
Icon icon;
/*
* main()
* Create a panel and panel items. The application uses panel items
* to choose a particular object and change its foreground and background
* colors in an interactive manner. Create a textsw. Create an icon.
* All the objects share the same colormap segment.
*/
main(argc,argv)
int argc;
char *argv[];
{
Frame frame;
Cms control_cms, plain_cms;
Server_image choice_image;
Xv_Singlecolor cms_colors[NUM_COLORS];
Panel_item panel_palette, panel_fg_bg, panel_object;
int textsw_width;
void color_notify(), fg_bg_notify(), object_notify();
xv_init(XV_INIT_ARGS, argc, argv, 0);
frame = xv_create(XV_NULL, FRAME,
FRAME_LABEL,"xv_color",
0);
/*
* Create a colormap segment with the required colors for
* the color palette. Set it to be a control colormap segment
* to enable the panel to be painted using the 3D look.
*/
initialize_cms_colors(cms_colors);
control_cms = xv_create(XV_NULL, CMS,
CMS_SIZE, NUM_COLORS + CMS_CONTROL_COLORS,
CMS_COLORS, cms_colors,
CMS_CONTROL_CMS, TRUE,
0);
plain_cms = xv_create(XV_NULL, CMS,
CMS_SIZE, NUM_COLORS,
CMS_COLORS, cms_colors,
0);
/* Create a server image to use for colored panel choice images */
choice_image = (Server_image) xv_create(XV_NULL, SERVER_IMAGE,
XV_WIDTH, CHIP_WIDTH,
XV_HEIGHT, CHIP_HEIGHT,
SERVER_IMAGE_DEPTH, 1,
SERVER_IMAGE_BITS, black_data,
0);
/* Create panel and set the colormap segment on the panel */
panel = xv_create(frame, PANEL,
PANEL_LAYOUT, PANEL_HORIZONTAL,
WIN_CMS, control_cms,
0);
/* Create panel items */
panel_object = xv_create(panel, PANEL_CHOICE_STACK,
PANEL_LABEL_STRING, "Object",
PANEL_LABEL_BOLD, TRUE,
PANEL_CHOICE_STRINGS,
"Textsw",
"Textsw View",
"Icon",
0,
PANEL_NOTIFY_PROC, object_notify,
0);
panel_fg_bg = xv_create(panel, PANEL_CHOICE,
PANEL_LABEL_STRING, "Fg/Bg",
PANEL_LABEL_BOLD, TRUE,
PANEL_CHOICE_STRINGS,
"Foreground",
"Background",
0,
PANEL_NOTIFY_PROC, fg_bg_notify,
0);
panel_palette = xv_create(panel, PANEL_CHOICE,
PANEL_LABEL_STRING, "Colors",
PANEL_LABEL_BOLD, TRUE,
XV_X, (int)xv_get(panel_fg_bg, XV_X),
PANEL_NEXT_ROW, 15,
PANEL_CHOICE_IMAGES,
choice_image,
choice_image,
choice_image,
choice_image,
choice_image,
choice_image,
choice_image,
choice_image,
0,
PANEL_CHOICE_COLOR, 0, CMS_CONTROL_COLORS + WHITE,
PANEL_CHOICE_COLOR, 1, CMS_CONTROL_COLORS + RED,
PANEL_CHOICE_COLOR, 2, CMS_CONTROL_COLORS + GREEN,
PANEL_CHOICE_COLOR, 3, CMS_CONTROL_COLORS + BLUE,
PANEL_CHOICE_COLOR, 4, CMS_CONTROL_COLORS + YELLOW,
PANEL_CHOICE_COLOR, 5, CMS_CONTROL_COLORS + PINK,
PANEL_CHOICE_COLOR, 6, CMS_CONTROL_COLORS + GRAY,
PANEL_CHOICE_COLOR, 7, CMS_CONTROL_COLORS + BLACK,
PANEL_NOTIFY_PROC, color_notify,
0);
(void)window_fit_height(panel);
/* create textsw and set the colormap segment for it */
textsw = xv_create(frame, TEXTSW,
WIN_CMS, plain_cms,
WIN_BELOW, panel,
WIN_ROWS, 45,
WIN_COLUMNS, 80,
0);
/* adjust panel dimensions */
textsw_width = (int)xv_get(textsw, WIN_WIDTH);
(void)xv_set(panel, WIN_WIDTH, textsw_width, 0);
/* associate icon with the base frame */
icon = xv_create(XV_NULL, ICON,
ICON_IMAGE, &icon_image,
WIN_CMS, plain_cms,
0);
xv_set(frame, FRAME_ICON, icon, 0);
window_fit(frame);
/* Start event loop */
xv_main_loop(frame);
return(0);
}
/*
* initialize_cms_colors()
* Initialize the required RGB values.
*/
initialize_cms_colors(colors)
Xv_Singlecolor *colors;
{
colors[WHITE].red = 255;
colors[WHITE].green = 255;
colors[WHITE].blue = 255;
colors[RED].red = 255;
colors[RED].green = 0;
colors[RED].blue = 0;
colors[GREEN].red = 0;
colors[GREEN].green = 255;
colors[GREEN].blue = 0;
colors[BLUE].red = 0;
colors[BLUE].green = 0;
colors[BLUE].blue = 255;
colors[YELLOW].red = 255;
colors[YELLOW].green = 255;
colors[YELLOW].blue = 0;
colors[PINK].red = 188;
colors[PINK].green = 143;
colors[PINK].blue = 143;
colors[GRAY].red = 220;
colors[GRAY].green = 220;
colors[GRAY].blue = 220;
colors[BLACK].red = 0;
colors[BLACK].green = 0;
colors[BLACK].blue = 0;
}
/*
* color_notify()
* This routine gets called when a color selection is made.
* Set the foreground or background on the currently selected object.
* WIN_FOREGROUND_COLOR & WIN_BACKGROUND_COLOR allow the application
* to specify indices into the colormap segment as the foreground and
* background values.
*/
void
color_notify(panel_item, event)
Panel_item panel_item;
Event *event;
{
int choice;
Xv_opaque current_object, get_current_object();
current_object = (Xv_opaque)get_current_object();
choice = (int) xv_get(panel_item, PANEL_VALUE);
if (fg) {
xv_set(current_object, WIN_FOREGROUND_COLOR, choice, 0);
} else {
xv_set(current_object, WIN_BACKGROUND_COLOR, choice, 0);
}
}
/*
* fg_bg_notify()
* This routine gets called when a foreground/background selection
* is made.
*/
void
fg_bg_notify(panel_item, event)
Panel_item panel_item;
Event *event;
{
int choice;
choice = (int) xv_get(panel_item, PANEL_VALUE);
if (choice == 0) {
fg = TRUE;
} else {
fg = FALSE;
}
}
/*
* object_notify()
* This routine gets called when an object selction is made.
* Store this selection as the current object.
*/
void
object_notify(panel_item, event)
Panel_item panel_item;
Event *event;
{
current_selection = (int) xv_get(panel_item, PANEL_VALUE);
}
/*
* get_current_object()
* This routine returns the XView handle to the currently selected
* object.
*/
Xv_opaque
get_current_object()
{
Xv_opaque current_object;
switch(current_selection) {
case SELECT_TEXTSW:
current_object = (Xv_opaque)textsw;
break;
case SELECT_TEXTSW_VIEW:
current_object =
(Xv_opaque)xv_get(textsw, OPENWIN_NTH_VIEW, 0);
break;
case SELECT_ICON:
current_object = (Xv_opaque)icon;
break;
default:
current_object = (Xv_opaque)textsw;
break;
}
return(current_object);
}
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