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/* color_utils.c
* Toolkit-dependent implementations of routines to handle colors.
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <gtk/gtk.h>
#include "../color.h"
#include "../simple_dialog.h"
#include "gtk/color_utils.h"
#include "gtk/gtkglobals.h"
static GdkColormap* sys_cmap;
static GdkColormap* our_cmap = NULL;
GdkColor WHITE = { 0, 65535, 65535, 65535 };
GdkColor LTGREY = { 0, 57343, 57343, 57343 };
GdkColor BLACK = { 0, 0, 0, 0 };
/*
* Initialize a color with R, G, and B values, including any toolkit-dependent
* work that needs to be done.
* Returns TRUE if it succeeds, FALSE if it fails.
*/
gboolean
initialize_color(color_t *color, guint16 red, guint16 green, guint16 blue)
{
GdkColor gdk_color;
gdk_color.red = red;
gdk_color.green = green;
gdk_color.blue = blue;
if (!get_color(&gdk_color))
return FALSE;
gdkcolor_to_color_t(color, &gdk_color);
return TRUE;
}
/* Initialize the colors */
void
colors_init(void)
{
gboolean got_white, got_black;
sys_cmap = gdk_colormap_get_system();
/* Allocate "constant" colors. */
got_white = get_color(&WHITE);
got_black = get_color(&BLACK);
/* Got milk? */
if (!got_white) {
if (!got_black)
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"Could not allocate colors black or white.");
else
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"Could not allocate color white.");
} else {
if (!got_black)
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"Could not allocate color black.");
}
}
/* allocate a color from the color map */
gboolean
get_color(GdkColor *new_color)
{
GdkVisual *pv;
if (!our_cmap) {
if (!gdk_colormap_alloc_color (sys_cmap, new_color, FALSE,
TRUE)) {
pv = gdk_visual_get_best();
if (!(our_cmap = gdk_colormap_new(pv, TRUE))) {
simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
"Could not create new colormap");
}
} else
return (TRUE);
}
return (gdk_colormap_alloc_color(our_cmap, new_color, FALSE, TRUE));
}
void
color_t_to_gdkcolor(GdkColor *target, const color_t *source)
{
target->pixel = source->pixel;
target->red = source->red;
target->green = source->green;
target->blue = source->blue;
}
void
gdkcolor_to_color_t(color_t *target, const GdkColor *source)
{
target->pixel = source->pixel;
target->red = source->red;
target->green = source->green;
target->blue = source->blue;
}
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