mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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3b0de24a7b
Tue Feb 3 15:34:27 1998 Owen Taylor <owt1@cornell.edu> * gdk/gdkcolor.c (gdk_colormap_get_system): Only query the colormap for GRAYSCALE and PSEUDOCOLOR visuals, and don't ask for more than 256 colors in any case. * gdk/gdkwindow.c (gdk_window_internal_destroy): Remove the input window information when we destroy the window, not when we are notified of it. * gdk/gdkinputcommon.h (gdk_input_device_new): Work around bug in XFree86 3.3.1's handling of Wacom macro buttons. by assumming no device will report exactly 25 buttons. * gdk/gdkinputcommon.h (gdk_input_common_other_event): Fill in string translation for generated key press events, do sanity checking on received key codes. * gdk/gdkcc.c (gdk_color_context_new): Allocate enough room for a GdkColorContextPrivate, not just for a GdkColorContext.
719 lines
16 KiB
C
719 lines
16 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <X11/Xlib.h>
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#include "gdk.h"
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#include "gdkprivate.h"
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static gint gdk_colormap_match_color (GdkColormap *cmap,
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GdkColor *color,
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const gchar *available);
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static void gdk_colormap_add (GdkColormap *cmap);
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static void gdk_colormap_remove (GdkColormap *cmap);
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static guint gdk_colormap_hash (Colormap *cmap);
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static gint gdk_colormap_cmp (Colormap *a,
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Colormap *b);
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static void gdk_colormap_real_destroy (GdkColormap *colormap);
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static GHashTable *colormap_hash = NULL;
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GdkColormap*
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gdk_colormap_new (GdkVisual *visual,
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gint private_cmap)
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{
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GdkColormap *colormap;
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GdkColormapPrivate *private;
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Visual *xvisual;
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XColor default_colors[256];
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int size;
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int i;
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g_return_val_if_fail (visual != NULL, NULL);
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private = g_new (GdkColormapPrivate, 1);
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colormap = (GdkColormap*) private;
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private->xdisplay = gdk_display;
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private->visual = visual;
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private->next_color = 0;
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private->ref_count = 1;
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xvisual = ((GdkVisualPrivate*) visual)->xvisual;
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switch (visual->type)
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{
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case GDK_VISUAL_GRAYSCALE:
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case GDK_VISUAL_PSEUDO_COLOR:
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private->private_val = private_cmap;
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private->xcolormap = XCreateColormap (private->xdisplay, gdk_root_window,
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xvisual, (private_cmap) ? (AllocAll) : (AllocNone));
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if (private_cmap)
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{
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for (i = 0; i < 256; i++)
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default_colors[i].pixel = i;
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XQueryColors (private->xdisplay,
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DefaultColormap (private->xdisplay, gdk_screen),
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default_colors, visual->colormap_size);
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for (i = 0; i < visual->colormap_size; i++)
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{
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colormap->colors[i].pixel = default_colors[i].pixel;
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colormap->colors[i].red = default_colors[i].red;
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colormap->colors[i].green = default_colors[i].green;
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colormap->colors[i].blue = default_colors[i].blue;
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}
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gdk_colormap_change (colormap, visual->colormap_size);
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}
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break;
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case GDK_VISUAL_DIRECT_COLOR:
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private->private_val = TRUE;
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private->xcolormap = XCreateColormap (private->xdisplay, gdk_root_window,
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xvisual, AllocAll);
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size = 1 << visual->red_prec;
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for (i = 0; i < size; i++)
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colormap->colors[i].red = i * 65535 / (size - 1);
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size = 1 << visual->green_prec;
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for (i = 0; i < size; i++)
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colormap->colors[i].green = i * 65535 / (size - 1);
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size = 1 << visual->blue_prec;
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for (i = 0; i < size; i++)
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colormap->colors[i].blue = i * 65535 / (size - 1);
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gdk_colormap_change (colormap, visual->colormap_size);
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break;
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case GDK_VISUAL_STATIC_GRAY:
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case GDK_VISUAL_STATIC_COLOR:
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case GDK_VISUAL_TRUE_COLOR:
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private->private_val = FALSE;
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private->xcolormap = XCreateColormap (private->xdisplay, gdk_root_window,
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xvisual, AllocNone);
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break;
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}
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gdk_colormap_add (colormap);
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return colormap;
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}
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static void
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gdk_colormap_real_destroy (GdkColormap *colormap)
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{
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GdkColormapPrivate *private = (GdkColormapPrivate*) colormap;
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g_return_if_fail (colormap != NULL);
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if (private->ref_count > 0)
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return;
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gdk_colormap_remove (colormap);
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XFreeColormap (private->xdisplay, private->xcolormap);
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g_free (colormap);
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}
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GdkColormap*
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gdk_colormap_ref (GdkColormap *cmap)
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{
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GdkColormapPrivate *private = (GdkColormapPrivate *)cmap;
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g_return_val_if_fail (cmap != NULL, NULL);
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private->ref_count += 1;
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return cmap;
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}
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void
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gdk_colormap_unref (GdkColormap *cmap)
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{
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GdkColormapPrivate *private = (GdkColormapPrivate *)cmap;
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g_return_if_fail (cmap != NULL);
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private->ref_count -= 1;
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if (private->ref_count == 0)
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gdk_colormap_real_destroy (cmap);
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}
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GdkColormap*
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gdk_colormap_get_system (void)
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{
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static GdkColormap *colormap = NULL;
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GdkColormapPrivate *private;
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XColor xpalette[256];
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gint i;
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if (!colormap)
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{
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private = g_new (GdkColormapPrivate, 1);
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colormap = (GdkColormap*) private;
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private->xdisplay = gdk_display;
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private->xcolormap = DefaultColormap (gdk_display, gdk_screen);
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private->visual = gdk_visual_get_system ();
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private->private_val = FALSE;
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private->next_color = 0;
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private->ref_count = 1;
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if ((private->visual->type == GDK_VISUAL_GRAYSCALE) ||
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(private->visual->type == GDK_VISUAL_PSEUDO_COLOR))
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{
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for (i = 0; i < 256; i++)
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{
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xpalette[i].pixel = i;
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xpalette[i].red = 0;
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xpalette[i].green = 0;
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xpalette[i].blue = 0;
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}
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XQueryColors (gdk_display, private->xcolormap, xpalette,
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MIN (private->visual->colormap_size, 256));
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for (i = 0; i < 256; i++)
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{
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colormap->colors[i].pixel = xpalette[i].pixel;
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colormap->colors[i].red = xpalette[i].red;
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colormap->colors[i].green = xpalette[i].green;
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colormap->colors[i].blue = xpalette[i].blue;
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}
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}
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gdk_colormap_add (colormap);
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}
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return colormap;
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}
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gint
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gdk_colormap_get_system_size (void)
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{
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return DisplayCells (gdk_display, gdk_screen);
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}
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void
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gdk_colormap_change (GdkColormap *colormap,
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gint ncolors)
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{
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GdkColormapPrivate *private;
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GdkVisual *visual;
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XColor palette[256];
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gint shift;
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int max_colors;
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int size;
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int i;
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g_return_if_fail (colormap != NULL);
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private = (GdkColormapPrivate*) colormap;
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switch (private->visual->type)
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{
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case GDK_VISUAL_GRAYSCALE:
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case GDK_VISUAL_PSEUDO_COLOR:
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for (i = 0; i < ncolors; i++)
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{
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palette[i].pixel = colormap->colors[i].pixel;
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palette[i].red = colormap->colors[i].red;
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palette[i].green = colormap->colors[i].green;
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palette[i].blue = colormap->colors[i].blue;
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palette[i].flags = DoRed | DoGreen | DoBlue;
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}
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XStoreColors (private->xdisplay, private->xcolormap, palette, ncolors);
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private->next_color = MAX (private->next_color, ncolors);
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break;
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case GDK_VISUAL_DIRECT_COLOR:
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visual = private->visual;
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shift = visual->red_shift;
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max_colors = 1 << visual->red_prec;
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size = (ncolors < max_colors) ? (ncolors) : (max_colors);
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for (i = 0; i < size; i++)
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{
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palette[i].pixel = i << shift;
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palette[i].red = colormap->colors[i].red;
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palette[i].flags = DoRed;
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}
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XStoreColors (private->xdisplay, private->xcolormap, palette, size);
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shift = visual->green_shift;
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max_colors = 1 << visual->green_prec;
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size = (ncolors < max_colors) ? (ncolors) : (max_colors);
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for (i = 0; i < size; i++)
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{
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palette[i].pixel = i << shift;
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palette[i].green = colormap->colors[i].green;
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palette[i].flags = DoGreen;
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}
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XStoreColors (private->xdisplay, private->xcolormap, palette, size);
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shift = visual->blue_shift;
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max_colors = 1 << visual->blue_prec;
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size = (ncolors < max_colors) ? (ncolors) : (max_colors);
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for (i = 0; i < size; i++)
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{
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palette[i].pixel = i << shift;
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palette[i].blue = colormap->colors[i].blue;
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palette[i].flags = DoBlue;
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}
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XStoreColors (private->xdisplay, private->xcolormap, palette, size);
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break;
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default:
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break;
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}
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}
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void
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gdk_colors_store (GdkColormap *colormap,
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GdkColor *colors,
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gint ncolors)
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{
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gint i;
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for (i = 0; i < ncolors; i++)
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{
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colormap->colors[i].pixel = colors[i].pixel;
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colormap->colors[i].red = colors[i].red;
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colormap->colors[i].green = colors[i].green;
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colormap->colors[i].blue = colors[i].blue;
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}
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gdk_colormap_change (colormap, ncolors);
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}
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gint
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gdk_colors_alloc (GdkColormap *colormap,
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gint contiguous,
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gulong *planes,
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gint nplanes,
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gulong *pixels,
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gint npixels)
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{
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GdkColormapPrivate *private;
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gint return_val;
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g_return_val_if_fail (colormap != NULL, 0);
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private = (GdkColormapPrivate*) colormap;
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return_val = XAllocColorCells (private->xdisplay, private->xcolormap,
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contiguous, planes, nplanes, pixels, npixels);
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return return_val;
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}
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void
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gdk_colors_free (GdkColormap *colormap,
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gulong *pixels,
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gint npixels,
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gulong planes)
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{
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GdkColormapPrivate *private;
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g_return_if_fail (colormap != NULL);
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private = (GdkColormapPrivate*) colormap;
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XFreeColors (private->xdisplay, private->xcolormap,
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pixels, npixels, planes);
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}
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gint
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gdk_color_white (GdkColormap *colormap,
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GdkColor *color)
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{
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gint return_val;
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g_return_val_if_fail (colormap != NULL, FALSE);
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if (color)
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{
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color->pixel = WhitePixel (gdk_display, gdk_screen);
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color->red = 65535;
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color->green = 65535;
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color->blue = 65535;
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return_val = gdk_color_alloc (colormap, color);
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}
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else
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return_val = FALSE;
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return return_val;
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}
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gint
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gdk_color_black (GdkColormap *colormap,
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GdkColor *color)
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{
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gint return_val;
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g_return_val_if_fail (colormap != NULL, FALSE);
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if (color)
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{
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color->pixel = BlackPixel (gdk_display, gdk_screen);
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color->red = 0;
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color->green = 0;
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color->blue = 0;
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return_val = gdk_color_alloc (colormap, color);
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}
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else
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return_val = FALSE;
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return return_val;
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}
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gint
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gdk_color_parse (const gchar *spec,
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GdkColor *color)
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{
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Colormap xcolormap;
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XColor xcolor;
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gint return_val;
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g_return_val_if_fail (spec != NULL, FALSE);
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g_return_val_if_fail (color != NULL, FALSE);
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xcolormap = DefaultColormap (gdk_display, gdk_screen);
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if (XParseColor (gdk_display, xcolormap, spec, &xcolor))
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{
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return_val = TRUE;
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color->red = xcolor.red;
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color->green = xcolor.green;
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color->blue = xcolor.blue;
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}
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else
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return_val = FALSE;
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return return_val;
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}
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gint
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gdk_color_alloc (GdkColormap *colormap,
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GdkColor *color)
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{
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GdkColormapPrivate *private;
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GdkVisual *visual;
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XColor xcolor;
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gchar available[256];
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gint available_init;
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gint return_val;
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gint i, index;
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g_return_val_if_fail (colormap != NULL, FALSE);
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g_return_val_if_fail (color != NULL, FALSE);
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xcolor.red = color->red;
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xcolor.green = color->green;
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xcolor.blue = color->blue;
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xcolor.pixel = color->pixel;
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xcolor.flags = DoRed | DoGreen | DoBlue;
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return_val = FALSE;
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private = (GdkColormapPrivate*) colormap;
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switch (private->visual->type)
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{
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case GDK_VISUAL_GRAYSCALE:
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case GDK_VISUAL_PSEUDO_COLOR:
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if (private->private_val)
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{
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if (private->next_color > 255)
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{
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for (i = 0; i < 256; i++)
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available[i] = TRUE;
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index = gdk_colormap_match_color (colormap, color, available);
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if (index != -1)
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{
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available[index] = FALSE;
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*color = colormap->colors[index];
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return_val = TRUE;
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}
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else
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{
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return_val = FALSE;
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}
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}
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else
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{
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xcolor.pixel = 255 - private->next_color;
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color->pixel = xcolor.pixel;
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private->next_color += 1;
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XStoreColor (private->xdisplay, private->xcolormap, &xcolor);
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return_val = TRUE;
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}
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}
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else
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{
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available_init = 1;
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while (1)
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{
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if (XAllocColor (private->xdisplay, private->xcolormap, &xcolor))
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{
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color->pixel = xcolor.pixel;
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color->red = xcolor.red;
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color->green = xcolor.green;
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color->blue = xcolor.blue;
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colormap->colors[color->pixel] = *color;
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return_val = TRUE;
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break;
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}
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else
|
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{
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if (available_init)
|
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{
|
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available_init = 0;
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for (i = 0; i < 256; i++)
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available[i] = TRUE;
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}
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index = gdk_colormap_match_color (colormap, color, available);
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if (index != -1)
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{
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available[index] = FALSE;
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xcolor.red = colormap->colors[index].red;
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xcolor.green = colormap->colors[index].green;
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xcolor.blue = colormap->colors[index].blue;
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}
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else
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{
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return_val = FALSE;
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break;
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}
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}
|
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}
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}
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break;
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|
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case GDK_VISUAL_DIRECT_COLOR:
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visual = private->visual;
|
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xcolor.pixel = (((xcolor.red >> (16 - visual->red_prec)) << visual->red_shift) +
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|
((xcolor.green >> (16 - visual->green_prec)) << visual->green_shift) +
|
|
((xcolor.blue >> (16 - visual->blue_prec)) << visual->blue_shift));
|
|
color->pixel = xcolor.pixel;
|
|
return_val = TRUE;
|
|
break;
|
|
|
|
case GDK_VISUAL_STATIC_GRAY:
|
|
case GDK_VISUAL_STATIC_COLOR:
|
|
case GDK_VISUAL_TRUE_COLOR:
|
|
if (XAllocColor (private->xdisplay, private->xcolormap, &xcolor))
|
|
{
|
|
color->pixel = xcolor.pixel;
|
|
return_val = TRUE;
|
|
}
|
|
else
|
|
return_val = FALSE;
|
|
break;
|
|
}
|
|
|
|
return return_val;
|
|
}
|
|
|
|
gint
|
|
gdk_color_change (GdkColormap *colormap,
|
|
GdkColor *color)
|
|
{
|
|
GdkColormapPrivate *private;
|
|
XColor xcolor;
|
|
|
|
g_return_val_if_fail (colormap != NULL, FALSE);
|
|
g_return_val_if_fail (color != NULL, FALSE);
|
|
|
|
xcolor.pixel = color->pixel;
|
|
xcolor.red = color->red;
|
|
xcolor.green = color->green;
|
|
xcolor.blue = color->blue;
|
|
xcolor.flags = DoRed | DoGreen | DoBlue;
|
|
|
|
private = (GdkColormapPrivate*) colormap;
|
|
XStoreColor (private->xdisplay, private->xcolormap, &xcolor);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gint
|
|
gdk_color_equal (GdkColor *colora,
|
|
GdkColor *colorb)
|
|
{
|
|
g_return_val_if_fail (colora != NULL, FALSE);
|
|
g_return_val_if_fail (colorb != NULL, FALSE);
|
|
|
|
return ((colora->red == colorb->red) &&
|
|
(colora->green == colorb->green) &&
|
|
(colora->blue == colorb->blue));
|
|
}
|
|
|
|
GdkColormap*
|
|
gdkx_colormap_get (Colormap xcolormap)
|
|
{
|
|
GdkColormap *colormap;
|
|
GdkColormapPrivate *private;
|
|
XColor xpalette[256];
|
|
gint i;
|
|
|
|
colormap = gdk_colormap_lookup (xcolormap);
|
|
if (colormap)
|
|
return colormap;
|
|
|
|
if (xcolormap == DefaultColormap (gdk_display, gdk_screen))
|
|
return gdk_colormap_get_system ();
|
|
|
|
private = g_new (GdkColormapPrivate, 1);
|
|
colormap = (GdkColormap*) private;
|
|
|
|
private->xdisplay = gdk_display;
|
|
private->xcolormap = xcolormap;
|
|
private->visual = NULL;
|
|
private->private_val = TRUE;
|
|
private->next_color = 0;
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
xpalette[i].pixel = i;
|
|
xpalette[i].red = 0;
|
|
xpalette[i].green = 0;
|
|
xpalette[i].blue = 0;
|
|
}
|
|
|
|
XQueryColors (gdk_display, private->xcolormap, xpalette, 256);
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
colormap->colors[i].pixel = xpalette[i].pixel;
|
|
colormap->colors[i].red = xpalette[i].red;
|
|
colormap->colors[i].green = xpalette[i].green;
|
|
colormap->colors[i].blue = xpalette[i].blue;
|
|
}
|
|
|
|
gdk_colormap_add (colormap);
|
|
|
|
return colormap;
|
|
}
|
|
|
|
|
|
static gint
|
|
gdk_colormap_match_color (GdkColormap *cmap,
|
|
GdkColor *color,
|
|
const gchar *available)
|
|
{
|
|
GdkColor *colors;
|
|
guint sum, max;
|
|
gint rdiff, gdiff, bdiff;
|
|
gint i, index;
|
|
|
|
g_return_val_if_fail (cmap != NULL, 0);
|
|
g_return_val_if_fail (color != NULL, 0);
|
|
|
|
colors = cmap->colors;
|
|
max = 3 * (65536);
|
|
index = -1;
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
if ((!available) || (available && available[i]))
|
|
{
|
|
rdiff = (color->red - colors[i].red);
|
|
gdiff = (color->green - colors[i].green);
|
|
bdiff = (color->blue - colors[i].blue);
|
|
|
|
sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
|
|
|
|
if (sum < max)
|
|
{
|
|
index = i;
|
|
max = sum;
|
|
}
|
|
}
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
|
|
GdkColormap*
|
|
gdk_colormap_lookup (Colormap xcolormap)
|
|
{
|
|
GdkColormap *cmap;
|
|
|
|
if (!colormap_hash)
|
|
return NULL;
|
|
|
|
cmap = g_hash_table_lookup (colormap_hash, &xcolormap);
|
|
return cmap;
|
|
}
|
|
|
|
static void
|
|
gdk_colormap_add (GdkColormap *cmap)
|
|
{
|
|
GdkColormapPrivate *private;
|
|
|
|
if (!colormap_hash)
|
|
colormap_hash = g_hash_table_new ((GHashFunc) gdk_colormap_hash,
|
|
(GCompareFunc) gdk_colormap_cmp);
|
|
|
|
private = (GdkColormapPrivate*) cmap;
|
|
|
|
g_hash_table_insert (colormap_hash, &private->xcolormap, cmap);
|
|
}
|
|
|
|
static void
|
|
gdk_colormap_remove (GdkColormap *cmap)
|
|
{
|
|
GdkColormapPrivate *private;
|
|
|
|
if (!colormap_hash)
|
|
colormap_hash = g_hash_table_new ((GHashFunc) gdk_colormap_hash,
|
|
(GCompareFunc) gdk_colormap_cmp);
|
|
|
|
private = (GdkColormapPrivate*) cmap;
|
|
|
|
g_hash_table_remove (colormap_hash, &private->xcolormap);
|
|
}
|
|
|
|
static guint
|
|
gdk_colormap_hash (Colormap *cmap)
|
|
{
|
|
return *cmap;
|
|
}
|
|
|
|
static gint
|
|
gdk_colormap_cmp (Colormap *a,
|
|
Colormap *b)
|
|
{
|
|
return (*a == *b);
|
|
}
|