* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 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
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
- * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
-#include <time.h>
-#include <X11/Xlib.h>
-#include "gdk.h"
-#include "gdkprivate.h"
-#include "gdkx.h"
-
-
-static gint gdk_colormap_match_color (GdkColormap *cmap,
- GdkColor *color,
- const gchar *available);
-static void gdk_colormap_add (GdkColormap *cmap);
-static void gdk_colormap_remove (GdkColormap *cmap);
-static guint gdk_colormap_hash (Colormap *cmap);
-static gint gdk_colormap_cmp (Colormap *a,
- Colormap *b);
-static void gdk_colormap_real_destroy (GdkColormap *colormap);
-
-static GHashTable *colormap_hash = NULL;
-
-
-GdkColormap*
-gdk_colormap_new (GdkVisual *visual,
- gint private_cmap)
-{
- GdkColormap *colormap;
- GdkColormapPrivate *private;
- Visual *xvisual;
- int size;
- int i;
-
- g_return_val_if_fail (visual != NULL, NULL);
-
- private = g_new (GdkColormapPrivate, 1);
- colormap = (GdkColormap*) private;
-
- private->xdisplay = gdk_display;
- private->visual = visual;
- private->ref_count = 1;
-
- private->hash = NULL;
- private->last_sync_time = 0;
- private->info = NULL;
-
- xvisual = ((GdkVisualPrivate*) visual)->xvisual;
-
- colormap->size = visual->colormap_size;
- colormap->colors = NULL;
-
- switch (visual->type)
- {
- case GDK_VISUAL_GRAYSCALE:
- case GDK_VISUAL_PSEUDO_COLOR:
- private->info = g_new0 (GdkColorInfo, colormap->size);
- colormap->colors = g_new (GdkColor, colormap->size);
-
- private->hash = g_hash_table_new ((GHashFunc) gdk_color_hash,
- (GCompareFunc) gdk_color_equal);
-
- private->private_val = private_cmap;
- private->xcolormap = XCreateColormap (private->xdisplay, gdk_root_window,
- xvisual, (private_cmap) ? (AllocAll) : (AllocNone));
-
- if (private_cmap)
- {
- XColor *default_colors;
-
- default_colors = g_new (XColor, colormap->size);
-
- for (i = 0; i < colormap->size; i++)
- default_colors[i].pixel = i;
-
- XQueryColors (private->xdisplay,
- DefaultColormap (private->xdisplay, gdk_screen),
- default_colors, colormap->size);
-
- for (i = 0; i < colormap->size; i++)
- {
- colormap->colors[i].pixel = default_colors[i].pixel;
- colormap->colors[i].red = default_colors[i].red;
- colormap->colors[i].green = default_colors[i].green;
- colormap->colors[i].blue = default_colors[i].blue;
- }
-
- gdk_colormap_change (colormap, colormap->size);
-
- g_free (default_colors);
- }
- break;
-
- case GDK_VISUAL_DIRECT_COLOR:
- private->private_val = TRUE;
- private->xcolormap = XCreateColormap (private->xdisplay, gdk_root_window,
- xvisual, AllocAll);
- colormap->colors = g_new (GdkColor, colormap->size);
-
- size = 1 << visual->red_prec;
- for (i = 0; i < size; i++)
- colormap->colors[i].red = i * 65535 / (size - 1);
-
- size = 1 << visual->green_prec;
- for (i = 0; i < size; i++)
- colormap->colors[i].green = i * 65535 / (size - 1);
-
- size = 1 << visual->blue_prec;
- for (i = 0; i < size; i++)
- colormap->colors[i].blue = i * 65535 / (size - 1);
-
- gdk_colormap_change (colormap, colormap->size);
- break;
-
- case GDK_VISUAL_STATIC_GRAY:
- case GDK_VISUAL_STATIC_COLOR:
- case GDK_VISUAL_TRUE_COLOR:
- private->private_val = FALSE;
- private->xcolormap = XCreateColormap (private->xdisplay, gdk_root_window,
- xvisual, AllocNone);
- break;
- }
-
- gdk_colormap_add (colormap);
-
- return colormap;
-}
-
-static void
-gdk_colormap_real_destroy (GdkColormap *colormap)
-{
- GdkColormapPrivate *private = (GdkColormapPrivate*) colormap;
-
- g_return_if_fail (colormap != NULL);
- g_return_if_fail (private->ref_count == 0);
-
- gdk_colormap_remove (colormap);
- XFreeColormap (private->xdisplay, private->xcolormap);
-
- if (private->hash)
- g_hash_table_destroy (private->hash);
-
- g_free (private->info);
- g_free (colormap->colors);
- g_free (colormap);
-}
-
-GdkColormap*
-gdk_colormap_ref (GdkColormap *cmap)
-{
- GdkColormapPrivate *private = (GdkColormapPrivate *)cmap;
-
- g_return_val_if_fail (cmap != NULL, NULL);
-
- private->ref_count += 1;
- return cmap;
-}
-
-void
-gdk_colormap_unref (GdkColormap *cmap)
-{
- GdkColormapPrivate *private = (GdkColormapPrivate *)cmap;
-
- g_return_if_fail (cmap != NULL);
- g_return_if_fail (private->ref_count > 0);
-
- private->ref_count -= 1;
- if (private->ref_count == 0)
- gdk_colormap_real_destroy (cmap);
-}
-
-GdkVisual *
-gdk_colormap_get_visual (GdkColormap *colormap)
-{
- GdkColormapPrivate *private;
-
- g_return_val_if_fail (colormap != NULL, NULL);
-
- private = (GdkColormapPrivate *)colormap;
-
- return private->visual;
-}
-
-#define MIN_SYNC_TIME 2
-
-void
-gdk_colormap_sync (GdkColormap *colormap,
- gboolean force)
-{
- time_t current_time;
- GdkColormapPrivate *private = (GdkColormapPrivate *)colormap;
- XColor *xpalette;
- gint nlookup;
- gint i;
-
- g_return_if_fail (colormap != NULL);
-
- current_time = time (NULL);
- if (!force && ((current_time - private->last_sync_time) < MIN_SYNC_TIME))
- return;
-
- private->last_sync_time = current_time;
-
- nlookup = 0;
- xpalette = g_new (XColor, colormap->size);
-
- for (i = 0; i < colormap->size; i++)
- {
- if (private->info[i].ref_count == 0)
- {
- xpalette[nlookup].pixel = i;
- xpalette[nlookup].red = 0;
- xpalette[nlookup].green = 0;
- xpalette[nlookup].blue = 0;
- nlookup++;
- }
- }
-
- XQueryColors (gdk_display, private->xcolormap, xpalette, nlookup);
-
- for (i = 0; i < nlookup; i++)
- {
- gulong pixel = xpalette[i].pixel;
- colormap->colors[pixel].pixel = pixel;
- colormap->colors[pixel].red = xpalette[i].red;
- colormap->colors[pixel].green = xpalette[i].green;
- colormap->colors[pixel].blue = xpalette[i].blue;
- }
-
- g_free (xpalette);
-}
-
-
-GdkColormap*
-gdk_colormap_get_system (void)
-{
- static GdkColormap *colormap = NULL;
- GdkColormapPrivate *private;
-
- if (!colormap)
- {
- private = g_new (GdkColormapPrivate, 1);
- colormap = (GdkColormap*) private;
-
- private->xdisplay = gdk_display;
- private->xcolormap = DefaultColormap (gdk_display, gdk_screen);
- private->visual = gdk_visual_get_system ();
- private->private_val = FALSE;
- private->ref_count = 1;
-
- private->hash = NULL;
- private->last_sync_time = 0;
- private->info = NULL;
-
- colormap->colors = NULL;
- colormap->size = private->visual->colormap_size;
-
- if ((private->visual->type == GDK_VISUAL_GRAYSCALE) ||
- (private->visual->type == GDK_VISUAL_PSEUDO_COLOR))
- {
- private->info = g_new0 (GdkColorInfo, colormap->size);
- colormap->colors = g_new (GdkColor, colormap->size);
-
- private->hash = g_hash_table_new ((GHashFunc) gdk_color_hash,
- (GCompareFunc) gdk_color_equal);
-
- gdk_colormap_sync (colormap, TRUE);
- }
-
- gdk_colormap_add (colormap);
- }
-
- return colormap;
-}
-
-gint
-gdk_colormap_get_system_size (void)
-{
- return DisplayCells (gdk_display, gdk_screen);
-}
-
-void
-gdk_colormap_change (GdkColormap *colormap,
- gint ncolors)
-{
- GdkColormapPrivate *private;
- GdkVisual *visual;
- XColor *palette;
- gint shift;
- int max_colors;
- int size;
- int i;
-
- g_return_if_fail (colormap != NULL);
-
- palette = g_new (XColor, ncolors);
-
- private = (GdkColormapPrivate*) colormap;
- switch (private->visual->type)
- {
- case GDK_VISUAL_GRAYSCALE:
- case GDK_VISUAL_PSEUDO_COLOR:
- for (i = 0; i < ncolors; i++)
- {
- palette[i].pixel = colormap->colors[i].pixel;
- palette[i].red = colormap->colors[i].red;
- palette[i].green = colormap->colors[i].green;
- palette[i].blue = colormap->colors[i].blue;
- palette[i].flags = DoRed | DoGreen | DoBlue;
- }
-
- XStoreColors (private->xdisplay, private->xcolormap, palette, ncolors);
- break;
-
- case GDK_VISUAL_DIRECT_COLOR:
- visual = private->visual;
-
- shift = visual->red_shift;
- max_colors = 1 << visual->red_prec;
- size = (ncolors < max_colors) ? (ncolors) : (max_colors);
+#include "config.h"
- for (i = 0; i < size; i++)
- {
- palette[i].pixel = i << shift;
- palette[i].red = colormap->colors[i].red;
- palette[i].flags = DoRed;
- }
+#include "gdkcolor.h"
- XStoreColors (private->xdisplay, private->xcolormap, palette, size);
+#include "gdkscreen.h"
+#include "gdkinternals.h"
- shift = visual->green_shift;
- max_colors = 1 << visual->green_prec;
- size = (ncolors < max_colors) ? (ncolors) : (max_colors);
-
- for (i = 0; i < size; i++)
- {
- palette[i].pixel = i << shift;
- palette[i].green = colormap->colors[i].green;
- palette[i].flags = DoGreen;
- }
-
- XStoreColors (private->xdisplay, private->xcolormap, palette, size);
-
- shift = visual->blue_shift;
- max_colors = 1 << visual->blue_prec;
- size = (ncolors < max_colors) ? (ncolors) : (max_colors);
-
- for (i = 0; i < size; i++)
- {
- palette[i].pixel = i << shift;
- palette[i].blue = colormap->colors[i].blue;
- palette[i].flags = DoBlue;
- }
-
- XStoreColors (private->xdisplay, private->xcolormap, palette, size);
- break;
-
- default:
- break;
- }
-
- g_free (palette);
-}
-
-void
-gdk_colors_store (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors)
-{
- gint i;
-
- for (i = 0; i < ncolors; i++)
- {
- colormap->colors[i].pixel = colors[i].pixel;
- colormap->colors[i].red = colors[i].red;
- colormap->colors[i].green = colors[i].green;
- colormap->colors[i].blue = colors[i].blue;
- }
-
- gdk_colormap_change (colormap, ncolors);
-}
-
-gboolean
-gdk_colors_alloc (GdkColormap *colormap,
- gint contiguous,
- gulong *planes,
- gint nplanes,
- gulong *pixels,
- gint npixels)
-{
- GdkColormapPrivate *private;
- gint return_val;
- gint i;
-
- g_return_val_if_fail (colormap != NULL, 0);
-
- private = (GdkColormapPrivate*) colormap;
-
- return_val = XAllocColorCells (private->xdisplay, private->xcolormap,
- contiguous, planes, nplanes, pixels, npixels);
+#include <time.h>
- if (return_val)
- {
- for (i=0; i<npixels; i++)
- {
- private->info[pixels[i]].ref_count++;
- private->info[pixels[i]].flags |= GDK_COLOR_WRITEABLE;
- }
- }
+/**
+ * SECTION:colors
+ * @Short_description: Manipulation of colors
+ * @Title: Colors
+ *
+ * A #GdkColor represents a color.
+ *
+ * When working with cairo, it is often more convenient
+ * to use a #GdkRGBA instead.
+ */
- return return_val != 0;
-}
-/*
- *--------------------------------------------------------------
- * gdk_color_copy
+/**
+ * gdk_color_copy:
+ * @color: a #GdkColor
*
- * Copy a color structure into new storage.
+ * Makes a copy of a color structure.
*
- * Arguments:
- * "color" is the color struct to copy.
+ * The result must be freed using gdk_color_free().
*
- * Results:
- * A new color structure. Free it with gdk_color_free.
- *
- *--------------------------------------------------------------
+ * Return value: a copy of @color
*/
-
-static GMemChunk *color_chunk;
-
GdkColor*
-gdk_color_copy (GdkColor *color)
+gdk_color_copy (const GdkColor *color)
{
GdkColor *new_color;
-
- g_return_val_if_fail (color != NULL, NULL);
- if (color_chunk == NULL)
- color_chunk = g_mem_chunk_new ("colors",
- sizeof (GdkColor),
- 4096,
- G_ALLOC_AND_FREE);
+ g_return_val_if_fail (color != NULL, NULL);
- new_color = g_chunk_new (GdkColor, color_chunk);
+ new_color = g_slice_new (GdkColor);
*new_color = *color;
return new_color;
}
-/*
- *--------------------------------------------------------------
- * gdk_color_free
- *
- * Free a color structure obtained from gdk_color_copy. Do not use
- * with other color structures.
- *
- * Arguments:
- * "color" is the color struct to free.
+/**
+ * gdk_color_free:
+ * @color: a #GdkColor
*
- *-------------------------------------------------------------- */
-
+ * Frees a color structure created with gdk_color_copy().
+ */
void
gdk_color_free (GdkColor *color)
{
- g_assert (color_chunk != NULL);
g_return_if_fail (color != NULL);
- g_mem_chunk_free (color_chunk, color);
-}
-
-gboolean
-gdk_color_white (GdkColormap *colormap,
- GdkColor *color)
-{
- gint return_val;
-
- g_return_val_if_fail (colormap != NULL, FALSE);
-
- if (color)
- {
- color->pixel = WhitePixel (gdk_display, gdk_screen);
- color->red = 65535;
- color->green = 65535;
- color->blue = 65535;
-
- return_val = gdk_color_alloc (colormap, color);
- }
- else
- return_val = FALSE;
-
- return return_val;
-}
-
-gboolean
-gdk_color_black (GdkColormap *colormap,
- GdkColor *color)
-{
- gint return_val;
-
- g_return_val_if_fail (colormap != NULL, FALSE);
-
- if (color)
- {
- color->pixel = BlackPixel (gdk_display, gdk_screen);
- color->red = 0;
- color->green = 0;
- color->blue = 0;
-
- return_val = gdk_color_alloc (colormap, color);
- }
- else
- return_val = FALSE;
-
- return return_val;
-}
-
-gboolean
-gdk_color_parse (const gchar *spec,
- GdkColor *color)
-{
- Colormap xcolormap;
- XColor xcolor;
- gboolean return_val;
-
- g_return_val_if_fail (spec != NULL, FALSE);
- g_return_val_if_fail (color != NULL, FALSE);
-
- xcolormap = DefaultColormap (gdk_display, gdk_screen);
-
- if (XParseColor (gdk_display, xcolormap, spec, &xcolor))
- {
- return_val = TRUE;
- color->red = xcolor.red;
- color->green = xcolor.green;
- color->blue = xcolor.blue;
- }
- else
- return_val = FALSE;
-
- return return_val;
-}
-
-/* This is almost identical to gdk_colormap_free_colors.
- * Keep them in sync!
- */
-void
-gdk_colors_free (GdkColormap *colormap,
- gulong *in_pixels,
- gint in_npixels,
- gulong planes)
-{
- GdkColormapPrivate *private;
- gulong *pixels;
- gint npixels = 0;
- gint i;
-
- g_return_if_fail (colormap != NULL);
- g_return_if_fail (in_pixels != NULL);
-
- private = (GdkColormapPrivate*) colormap;
-
- if ((private->visual->type != GDK_VISUAL_PSEUDO_COLOR) &&
- (private->visual->type != GDK_VISUAL_GRAYSCALE))
- return;
-
- pixels = g_new (gulong, in_npixels);
-
- for (i=0; i<in_npixels; i++)
- {
- gulong pixel = in_pixels[i];
-
- if (private->info[pixel].ref_count)
- {
- private->info[pixel].ref_count--;
-
- if (private->info[pixel].ref_count == 0)
- {
- pixels[npixels++] = pixel;
- if (!(private->info[pixel].flags & GDK_COLOR_WRITEABLE))
- g_hash_table_remove (private->hash, &colormap->colors[pixel]);
- private->info[pixel].flags = 0;
- }
- }
- }
-
- if (npixels)
- XFreeColors (private->xdisplay, private->xcolormap,
- pixels, npixels, planes);
- g_free (pixels);
+ g_slice_free (GdkColor, color);
}
-/* This is almost identical to gdk_colors_free.
- * Keep them in sync!
+/**
+ * gdk_color_hash:
+ * @color: a #GdkColor
+ *
+ * A hash function suitable for using for a hash
+ * table that stores #GdkColors.
+ *
+ * Return value: The hash function applied to @color
*/
-void
-gdk_colormap_free_colors (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors)
+guint
+gdk_color_hash (const GdkColor *color)
{
- GdkColormapPrivate *private;
- gulong *pixels;
- gint npixels = 0;
- gint i;
-
- g_return_if_fail (colormap != NULL);
- g_return_if_fail (colors != NULL);
-
- private = (GdkColormapPrivate*) colormap;
-
- if ((private->visual->type != GDK_VISUAL_PSEUDO_COLOR) &&
- (private->visual->type != GDK_VISUAL_GRAYSCALE))
- return;
-
- pixels = g_new (gulong, ncolors);
-
- for (i=0; i<ncolors; i++)
- {
- gulong pixel = colors[i].pixel;
-
- if (private->info[pixel].ref_count)
- {
- private->info[pixel].ref_count--;
-
- if (private->info[pixel].ref_count == 0)
- {
- pixels[npixels++] = pixel;
- if (!(private->info[pixel].flags & GDK_COLOR_WRITEABLE))
- g_hash_table_remove (private->hash, &colormap->colors[pixel]);
- private->info[pixel].flags = 0;
- }
- }
- }
-
- if (npixels)
- XFreeColors (private->xdisplay, private->xcolormap,
- pixels, npixels, 0);
-
- g_free (pixels);
+ return ((color->red) +
+ (color->green << 11) +
+ (color->blue << 22) +
+ (color->blue >> 6));
}
-/********************
- * Color allocation *
- ********************/
-
-/* Try to allocate a single color using XAllocColor. If it succeeds,
- * cache the result in our colormap, and store in ret.
+/**
+ * gdk_color_equal:
+ * @colora: a #GdkColor
+ * @colorb: another #GdkColor
+ *
+ * Compares two colors.
+ *
+ * Return value: %TRUE if the two colors compare equal
*/
-static gboolean
-gdk_colormap_alloc1 (GdkColormap *colormap,
- GdkColor *color,
- GdkColor *ret)
-{
- GdkColormapPrivate *private;
- XColor xcolor;
-
- private = (GdkColormapPrivate*) colormap;
-
- xcolor.red = color->red;
- xcolor.green = color->green;
- xcolor.blue = color->blue;
- xcolor.pixel = color->pixel;
- xcolor.flags = DoRed | DoGreen | DoBlue;
-
- if (XAllocColor (private->xdisplay, private->xcolormap, &xcolor))
- {
- ret->pixel = xcolor.pixel;
- ret->red = xcolor.red;
- ret->green = xcolor.green;
- ret->blue = xcolor.blue;
-
- if (ret->pixel < colormap->size)
- {
- if (private->info[ret->pixel].ref_count) /* got a duplicate */
- {
- XFreeColors (private->xdisplay, private->xcolormap,
- &ret->pixel, 1, 0);
- }
- else
- {
- colormap->colors[ret->pixel] = *color;
- colormap->colors[ret->pixel].pixel = ret->pixel;
- private->info[ret->pixel].ref_count = 1;
-
- g_hash_table_insert (private->hash,
- &colormap->colors[ret->pixel],
- &colormap->colors[ret->pixel]);
- }
- }
- return TRUE;
- }
- else
- {
- return FALSE;
- }
-}
-
-static gint
-gdk_colormap_alloc_colors_writeable (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors,
- gboolean writeable,
- gboolean best_match,
- gboolean *success)
-{
- GdkColormapPrivate *private;
- gulong *pixels;
- Status status;
- gint i, index;
-
- private = (GdkColormapPrivate*) colormap;
-
- if (private->private_val)
- {
- index = 0;
- for (i=0; i<ncolors; i++)
- {
- while ((index < colormap->size) && (private->info[index].ref_count != 0))
- index++;
-
- if (index < colormap->size)
- {
- colors[i].pixel = index;
- success[i] = TRUE;
- private->info[index].ref_count++;
- private->info[i].flags |= GDK_COLOR_WRITEABLE;
- }
- else
- break;
- }
- return i;
- }
- else
- {
- pixels = g_new (gulong, ncolors);
- /* Allocation of a writeable color cells */
-
- status = XAllocColorCells (private->xdisplay, private->xcolormap,
- FALSE, NULL, 0, pixels, ncolors);
- if (status)
- {
- for (i=0; i<ncolors; i++)
- {
- colors[i].pixel = pixels[i];
- private->info[pixels[i]].ref_count++;
- private->info[pixels[i]].flags |= GDK_COLOR_WRITEABLE;
- }
- }
-
- g_free (pixels);
-
- return status ? ncolors : 0;
- }
-}
-
-static gint
-gdk_colormap_alloc_colors_private (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors,
- gboolean writeable,
- gboolean best_match,
- gboolean *success)
-{
- GdkColormapPrivate *private;
- gint i, index;
- XColor *store = g_new (XColor, ncolors);
- gint nstore = 0;
- gint nremaining = 0;
-
- private = (GdkColormapPrivate*) colormap;
- index = -1;
-
- /* First, store the colors we have room for */
-
- index = 0;
- for (i=0; i<ncolors; i++)
- {
- if (!success[i])
- {
- while ((index < colormap->size) && (private->info[index].ref_count != 0))
- index++;
-
- if (index < colormap->size)
- {
- store[nstore].red = colors[i].red;
- store[nstore].blue = colors[i].blue;
- store[nstore].green = colors[i].green;
- store[nstore].pixel = index;
- nstore++;
-
- success[i] = TRUE;
-
- colors[i].pixel = index;
- private->info[index].ref_count++;
- }
- else
- nremaining++;
- }
- }
-
- XStoreColors (private->xdisplay, private->xcolormap, store, nstore);
- g_free (store);
-
- if (nremaining > 0 && best_match)
- {
- /* Get best matches for remaining colors */
-
- gchar *available = g_new (gchar, colormap->size);
- for (i = 0; i < colormap->size; i++)
- available[i] = TRUE;
-
- for (i=0; i<ncolors; i++)
- {
- if (!success[i])
- {
- index = gdk_colormap_match_color (colormap,
- &colors[i],
- available);
- if (index != -1)
- {
- colors[i] = colormap->colors[index];
- private->info[index].ref_count++;
-
- success[i] = TRUE;
- nremaining--;
- }
- }
- }
- g_free (available);
- }
-
- return (ncolors - nremaining);
-}
-
-static gint
-gdk_colormap_alloc_colors_shared (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors,
- gboolean writeable,
- gboolean best_match,
- gboolean *success)
-{
- GdkColormapPrivate *private;
- gint i, index;
- gint nremaining = 0;
- gint nfailed = 0;
-
- private = (GdkColormapPrivate*) colormap;
- index = -1;
-
- for (i=0; i<ncolors; i++)
- {
- if (!success[i])
- {
- if (gdk_colormap_alloc1 (colormap, &colors[i], &colors[i]))
- success[i] = TRUE;
- else
- nremaining++;
- }
- }
-
-
- if (nremaining > 0 && best_match)
- {
- gchar *available = g_new (gchar, colormap->size);
- for (i = 0; i < colormap->size; i++)
- available[i] = ((private->info[i].ref_count == 0) ||
- !(private->info[i].flags && GDK_COLOR_WRITEABLE));
- gdk_colormap_sync (colormap, FALSE);
-
- while (nremaining > 0)
- {
- for (i=0; i<ncolors; i++)
- {
- if (!success[i])
- {
- index = gdk_colormap_match_color (colormap, &colors[i], available);
- if (index != -1)
- {
- if (private->info[index].ref_count)
- {
- private->info[index].ref_count++;
- colors[i] = colormap->colors[index];
- success[i] = TRUE;
- nremaining--;
- }
- else
- {
- if (gdk_colormap_alloc1 (colormap,
- &colormap->colors[index],
- &colors[i]))
- {
- success[i] = TRUE;
- nremaining--;
- break;
- }
- else
- {
- available[index] = FALSE;
- }
- }
- }
- else
- {
- nfailed++;
- nremaining--;
- success[i] = 2; /* flag as permanent failure */
- }
- }
- }
- }
- g_free (available);
- }
-
- /* Change back the values we flagged as permanent failures */
- if (nfailed > 0)
- {
- for (i=0; i<ncolors; i++)
- if (success[i] == 2)
- success[i] = FALSE;
- nremaining = nfailed;
- }
-
- return (ncolors - nremaining);
-}
-
-static gint
-gdk_colormap_alloc_colors_pseudocolor (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors,
- gboolean writeable,
- gboolean best_match,
- gboolean *success)
-{
- GdkColormapPrivate *private;
- GdkColor *lookup_color;
- gint i;
- gint nremaining = 0;
-
- private = (GdkColormapPrivate*) colormap;
-
- /* Check for an exact match among previously allocated colors */
-
- for (i=0; i<ncolors; i++)
- {
- if (!success[i])
- {
- lookup_color = g_hash_table_lookup (private->hash, &colors[i]);
- if (lookup_color)
- {
- private->info[lookup_color->pixel].ref_count++;
- colors[i].pixel = lookup_color->pixel;
- success[i] = TRUE;
- }
- else
- nremaining++;
- }
- }
-
- /* If that failed, we try to allocate a new color, or approxmiate
- * with what we can get if best_match is TRUE.
- */
- if (nremaining > 0)
- {
- if (private->private_val)
- return gdk_colormap_alloc_colors_private (colormap, colors, ncolors, writeable, best_match, success);
- else
- return gdk_colormap_alloc_colors_shared (colormap, colors, ncolors, writeable, best_match, success);
- }
- else
- return 0;
-}
-
-gint
-gdk_colormap_alloc_colors (GdkColormap *colormap,
- GdkColor *colors,
- gint ncolors,
- gboolean writeable,
- gboolean best_match,
- gboolean *success)
-{
- GdkColormapPrivate *private;
- GdkVisual *visual;
- gint i;
- gint nremaining = 0;
- XColor xcolor;
-
- g_return_val_if_fail (colormap != NULL, FALSE);
- g_return_val_if_fail (colors != NULL, FALSE);
-
- private = (GdkColormapPrivate*) colormap;
-
- for (i=0; i<ncolors; i++)
- {
- success[i] = FALSE;
- }
-
- switch (private->visual->type)
- {
- case GDK_VISUAL_PSEUDO_COLOR:
- case GDK_VISUAL_GRAYSCALE:
- if (writeable)
- return gdk_colormap_alloc_colors_writeable (colormap, colors, ncolors,
- writeable, best_match, success);
- else
- return gdk_colormap_alloc_colors_pseudocolor (colormap, colors, ncolors,
- writeable, best_match, success);
- break;
-
- case GDK_VISUAL_DIRECT_COLOR:
- case GDK_VISUAL_TRUE_COLOR:
- visual = private->visual;
-
- for (i=0; i<ncolors; i++)
- {
- colors[i].pixel = (((colors[i].red >> (16 - visual->red_prec)) << visual->red_shift) +
- ((colors[i].green >> (16 - visual->green_prec)) << visual->green_shift) +
- ((colors[i].blue >> (16 - visual->blue_prec)) << visual->blue_shift));
- success[i] = TRUE;
- }
- break;
-
- case GDK_VISUAL_STATIC_GRAY:
- case GDK_VISUAL_STATIC_COLOR:
- for (i=0; i<ncolors; i++)
- {
- xcolor.red = colors[i].red;
- xcolor.green = colors[i].green;
- xcolor.blue = colors[i].blue;
- xcolor.pixel = colors[i].pixel;
- xcolor.flags = DoRed | DoGreen | DoBlue;
-
- if (XAllocColor (private->xdisplay, private->xcolormap, &xcolor))
- {
- colors[i].pixel = xcolor.pixel;
- success[i] = TRUE;
- }
- else
- nremaining++;
- }
- break;
- }
- return nremaining;
-}
-
-gboolean
-gdk_colormap_alloc_color (GdkColormap *colormap,
- GdkColor *color,
- gboolean writeable,
- gboolean best_match)
-{
- gboolean success;
-
- gdk_colormap_alloc_colors (colormap, color, 1, writeable, best_match,
- &success);
-
- return success;
-}
-
-gboolean
-gdk_color_alloc (GdkColormap *colormap,
- GdkColor *color)
-{
- gboolean success;
-
- gdk_colormap_alloc_colors (colormap, color, 1, FALSE, TRUE, &success);
-
- return success;
-}
-
gboolean
-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;
-}
-
-guint
-gdk_color_hash (const GdkColor *colora)
-{
- return ((colora->red) +
- (colora->green << 11) +
- (colora->blue << 22) +
- (colora->blue >> 6));
-}
-
-gint
gdk_color_equal (const GdkColor *colora,
- const GdkColor *colorb)
+ const 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));
-}
-
-/* XXX: Do not use this function until it is fixed. An X Colormap
- * is useless unless we also have the visual.
- */
-GdkColormap*
-gdkx_colormap_get (Colormap xcolormap)
-{
- GdkColormap *colormap;
- GdkColormapPrivate *private;
-
- 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;
-
- /* To do the following safely, we would have to have some way of finding
- * out what the size or visual of the given colormap is. It seems
- * X doesn't allow this
- */
-
-#if 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;
- }
-#endif
-
- colormap->colors = NULL;
- colormap->size = 0;
-
- gdk_colormap_add (colormap);
-
- return colormap;
+ (colora->green == colorb->green) &&
+ (colora->blue == colorb->blue));
}
+G_DEFINE_BOXED_TYPE (GdkColor, gdk_color,
+ gdk_color_copy,
+ gdk_color_free)
-static gint
-gdk_colormap_match_color (GdkColormap *cmap,
- GdkColor *color,
- const gchar *available)
+/**
+ * gdk_color_parse:
+ * @spec: the string specifying the color
+ * @color: (out): the #GdkColor to fill in
+ *
+ * Parses a textual specification of a color and fill in the
+ * <structfield>red</structfield>, <structfield>green</structfield>,
+ * and <structfield>blue</structfield> fields of a #GdkColor
+ * structure.
+ *
+ * The string can either one of a large set of standard names
+ * (taken from the X11 <filename>rgb.txt</filename> file), or
+ * it can be a hex value in the form '#rgb' '#rrggbb'
+ * '#rrrgggbbb' or '#rrrrggggbbbb' where 'r', 'g' and
+ * 'b' are hex digits of the red, green, and blue components
+ * of the color, respectively. (White in the four forms is
+ * '#fff', '#ffffff', '#fffffffff' and
+ * '#ffffffffffff').
+ *
+ * Return value: %TRUE if the parsing succeeded
+ */
+gboolean
+gdk_color_parse (const gchar *spec,
+ GdkColor *color)
{
- GdkColor *colors;
- guint sum, max;
- gint rdiff, gdiff, bdiff;
- gint i, index;
+ PangoColor pango_color;
- 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 < cmap->size; i++)
+ if (pango_color_parse (&pango_color, spec))
{
- 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);
+ color->red = pango_color.red;
+ color->green = pango_color.green;
+ color->blue = pango_color.blue;
- if (sum < max)
- {
- index = i;
- max = sum;
- }
- }
+ return TRUE;
}
-
- 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);
+ else
+ return FALSE;
}
-static void
-gdk_colormap_remove (GdkColormap *cmap)
+/**
+ * gdk_color_to_string:
+ * @color: a #GdkColor
+ *
+ * Returns a textual specification of @color in the hexadecimal form
+ * <literal>#rrrrggggbbbb</literal>, where <literal>r</literal>,
+ * <literal>g</literal> and <literal>b</literal> are hex digits
+ * representing the red, green and blue components respectively.
+ *
+ * The returned string can be parsed by gdk_color_parse().
+ *
+ * Return value: a newly-allocated text string
+ *
+ * Since: 2.12
+ */
+gchar *
+gdk_color_to_string (const GdkColor *color)
{
- GdkColormapPrivate *private;
-
- if (!colormap_hash)
- colormap_hash = g_hash_table_new ((GHashFunc) gdk_colormap_hash,
- (GCompareFunc) gdk_colormap_cmp);
-
- private = (GdkColormapPrivate*) cmap;
+ PangoColor pango_color;
- g_hash_table_remove (colormap_hash, &private->xcolormap);
-}
+ g_return_val_if_fail (color != NULL, NULL);
-static guint
-gdk_colormap_hash (Colormap *cmap)
-{
- return *cmap;
-}
+ pango_color.red = color->red;
+ pango_color.green = color->green;
+ pango_color.blue = color->blue;
-static gint
-gdk_colormap_cmp (Colormap *a,
- Colormap *b)
-{
- return (*a == *b);
+ return pango_color_to_string (&pango_color);
}