gtk/gdk/gdkvisual.c

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/* GDK - The GIMP Drawing Kit
* 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
* 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.
*
* 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.
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*/
/*
* Modified by the GTK+ Team and others 1997-1999. 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/.
*/
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#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "gdk.h"
#include "gdkprivate.h"
#include "gdkx.h"
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static void gdk_visual_add (GdkVisual *visual);
static void gdk_visual_decompose_mask (gulong mask,
gint *shift,
gint *prec);
static guint gdk_visual_hash (Visual *key);
static gint gdk_visual_compare (Visual *a,
Visual *b);
static GdkVisualPrivate *system_visual;
static GdkVisualPrivate *visuals;
static gint nvisuals;
static gint available_depths[7];
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static gint navailable_depths;
static GdkVisualType available_types[6];
static gint navailable_types;
#ifdef G_ENABLE_DEBUG
static const gchar* visual_names[] =
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{
"static gray",
"grayscale",
"static color",
"pseudo color",
"true color",
"direct color",
};
#endif /* G_ENABLE_DEBUG */
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static GHashTable *visual_hash = NULL;
void
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gdk_visual_init (void)
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{
static const gint possible_depths[7] = { 32, 24, 16, 15, 8, 4, 1 };
static const GdkVisualType possible_types[6] =
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{
GDK_VISUAL_DIRECT_COLOR,
GDK_VISUAL_TRUE_COLOR,
GDK_VISUAL_PSEUDO_COLOR,
GDK_VISUAL_STATIC_COLOR,
GDK_VISUAL_GRAYSCALE,
GDK_VISUAL_STATIC_GRAY
};
static const gint npossible_depths = sizeof(possible_depths)/sizeof(gint);
static const gint npossible_types = sizeof(possible_types)/sizeof(GdkVisualType);
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XVisualInfo *visual_list;
XVisualInfo visual_template;
GdkVisualPrivate temp_visual;
Visual *default_xvisual;
int nxvisuals;
int i, j;
visual_template.screen = gdk_screen;
visual_list = XGetVisualInfo (gdk_display, VisualScreenMask, &visual_template, &nxvisuals);
visuals = g_new (GdkVisualPrivate, nxvisuals);
default_xvisual = DefaultVisual (gdk_display, gdk_screen);
nvisuals = 0;
for (i = 0; i < nxvisuals; i++)
{
if (visual_list[i].depth >= 1)
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{
#ifdef __cplusplus
switch (visual_list[i].c_class)
#else /* __cplusplus */
switch (visual_list[i].class)
#endif /* __cplusplus */
{
case StaticGray:
visuals[nvisuals].visual.type = GDK_VISUAL_STATIC_GRAY;
break;
case GrayScale:
visuals[nvisuals].visual.type = GDK_VISUAL_GRAYSCALE;
break;
case StaticColor:
visuals[nvisuals].visual.type = GDK_VISUAL_STATIC_COLOR;
break;
case PseudoColor:
visuals[nvisuals].visual.type = GDK_VISUAL_PSEUDO_COLOR;
break;
case TrueColor:
visuals[nvisuals].visual.type = GDK_VISUAL_TRUE_COLOR;
break;
case DirectColor:
visuals[nvisuals].visual.type = GDK_VISUAL_DIRECT_COLOR;
break;
}
visuals[nvisuals].visual.depth = visual_list[i].depth;
visuals[nvisuals].visual.byte_order =
(ImageByteOrder(gdk_display) == LSBFirst) ?
GDK_LSB_FIRST : GDK_MSB_FIRST;
visuals[nvisuals].visual.red_mask = visual_list[i].red_mask;
visuals[nvisuals].visual.green_mask = visual_list[i].green_mask;
visuals[nvisuals].visual.blue_mask = visual_list[i].blue_mask;
visuals[nvisuals].visual.colormap_size = visual_list[i].colormap_size;
visuals[nvisuals].visual.bits_per_rgb = visual_list[i].bits_per_rgb;
visuals[nvisuals].xvisual = visual_list[i].visual;
if ((visuals[nvisuals].visual.type == GDK_VISUAL_TRUE_COLOR) ||
(visuals[nvisuals].visual.type == GDK_VISUAL_DIRECT_COLOR))
{
gdk_visual_decompose_mask (visuals[nvisuals].visual.red_mask,
&visuals[nvisuals].visual.red_shift,
&visuals[nvisuals].visual.red_prec);
gdk_visual_decompose_mask (visuals[nvisuals].visual.green_mask,
&visuals[nvisuals].visual.green_shift,
&visuals[nvisuals].visual.green_prec);
gdk_visual_decompose_mask (visuals[nvisuals].visual.blue_mask,
&visuals[nvisuals].visual.blue_shift,
&visuals[nvisuals].visual.blue_prec);
}
else
{
visuals[nvisuals].visual.red_mask = 0;
visuals[nvisuals].visual.red_shift = 0;
visuals[nvisuals].visual.red_prec = 0;
visuals[nvisuals].visual.green_mask = 0;
visuals[nvisuals].visual.green_shift = 0;
visuals[nvisuals].visual.green_prec = 0;
visuals[nvisuals].visual.blue_mask = 0;
visuals[nvisuals].visual.blue_shift = 0;
visuals[nvisuals].visual.blue_prec = 0;
}
nvisuals += 1;
}
}
if (visual_list)
XFree (visual_list);
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for (i = 0; i < nvisuals; i++)
{
for (j = i+1; j < nvisuals; j++)
{
if (visuals[j].visual.depth >= visuals[i].visual.depth)
{
if ((visuals[j].visual.depth == 8) && (visuals[i].visual.depth == 8))
{
if (visuals[j].visual.type == GDK_VISUAL_PSEUDO_COLOR)
{
temp_visual = visuals[j];
visuals[j] = visuals[i];
visuals[i] = temp_visual;
}
else if ((visuals[i].visual.type != GDK_VISUAL_PSEUDO_COLOR) &&
visuals[j].visual.type > visuals[i].visual.type)
{
temp_visual = visuals[j];
visuals[j] = visuals[i];
visuals[i] = temp_visual;
}
}
else if ((visuals[j].visual.depth > visuals[i].visual.depth) ||
((visuals[j].visual.depth == visuals[i].visual.depth) &&
(visuals[j].visual.type > visuals[i].visual.type)))
{
temp_visual = visuals[j];
visuals[j] = visuals[i];
visuals[i] = temp_visual;
}
}
}
}
for (i = 0; i < nvisuals; i++)
if (default_xvisual->visualid == visuals[i].xvisual->visualid)
{
system_visual = &visuals[i];
break;
}
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#ifdef G_ENABLE_DEBUG
if (gdk_debug_flags & GDK_DEBUG_MISC)
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for (i = 0; i < nvisuals; i++)
g_message ("visual: %s: %d",
visual_names[visuals[i].visual.type],
visuals[i].visual.depth);
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#endif /* G_ENABLE_DEBUG */
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navailable_depths = 0;
for (i = 0; i < npossible_depths; i++)
{
for (j = 0; j < nvisuals; j++)
{
if (visuals[j].visual.depth == possible_depths[i])
{
available_depths[navailable_depths++] = visuals[j].visual.depth;
break;
}
}
}
if (navailable_depths == 0)
g_error ("unable to find a usable depth");
navailable_types = 0;
for (i = 0; i < npossible_types; i++)
{
for (j = 0; j < nvisuals; j++)
{
if (visuals[j].visual.type == possible_types[i])
{
available_types[navailable_types++] = visuals[j].visual.type;
break;
}
}
}
for (i = 0; i < nvisuals; i++)
gdk_visual_add ((GdkVisual*) &visuals[i]);
if (npossible_types == 0)
g_error ("unable to find a usable visual type");
}
GdkVisual*
gdk_visual_ref (GdkVisual *visual)
{
return visual;
}
void
gdk_visual_unref (GdkVisual *visual)
{
return;
}
gint
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gdk_visual_get_best_depth (void)
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{
return available_depths[0];
}
GdkVisualType
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gdk_visual_get_best_type (void)
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{
return available_types[0];
}
GdkVisual*
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gdk_visual_get_system (void)
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{
return ((GdkVisual*) system_visual);
}
GdkVisual*
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gdk_visual_get_best (void)
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{
return ((GdkVisual*) &(visuals[0]));
}
GdkVisual*
gdk_visual_get_best_with_depth (gint depth)
{
GdkVisual *return_val;
int i;
return_val = NULL;
for (i = 0; i < nvisuals; i++)
if (depth == visuals[i].visual.depth)
{
return_val = (GdkVisual*) &(visuals[i]);
break;
}
return return_val;
}
GdkVisual*
gdk_visual_get_best_with_type (GdkVisualType visual_type)
{
GdkVisual *return_val;
int i;
return_val = NULL;
for (i = 0; i < nvisuals; i++)
if (visual_type == visuals[i].visual.type)
{
return_val = (GdkVisual*) &(visuals[i]);
break;
}
return return_val;
}
GdkVisual*
gdk_visual_get_best_with_both (gint depth,
GdkVisualType visual_type)
{
GdkVisual *return_val;
int i;
return_val = NULL;
for (i = 0; i < nvisuals; i++)
if ((depth == visuals[i].visual.depth) &&
(visual_type == visuals[i].visual.type))
{
return_val = (GdkVisual*) &(visuals[i]);
break;
}
return return_val;
}
void
gdk_query_depths (gint **depths,
gint *count)
{
*count = navailable_depths;
*depths = available_depths;
}
void
gdk_query_visual_types (GdkVisualType **visual_types,
gint *count)
{
*count = navailable_types;
*visual_types = available_types;
}
GList*
gdk_list_visuals (void)
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{
GList *list;
guint i;
list = NULL;
for (i = 0; i < nvisuals; ++i)
list = g_list_append (list, (gpointer) &visuals[i]);
return list;
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}
GdkVisual*
gdk_visual_lookup (Visual *xvisual)
{
GdkVisual *visual;
if (!visual_hash)
return NULL;
visual = g_hash_table_lookup (visual_hash, xvisual);
return visual;
}
GdkVisual*
gdkx_visual_get (VisualID xvisualid)
{
int i;
for (i = 0; i < nvisuals; i++)
if (xvisualid == visuals[i].xvisual->visualid)
return (GdkVisual*) &visuals[i];
return NULL;
}
static void
gdk_visual_add (GdkVisual *visual)
{
GdkVisualPrivate *private;
if (!visual_hash)
visual_hash = g_hash_table_new ((GHashFunc) gdk_visual_hash,
(GCompareFunc) gdk_visual_compare);
private = (GdkVisualPrivate*) visual;
g_hash_table_insert (visual_hash, private->xvisual, visual);
}
static void
gdk_visual_decompose_mask (gulong mask,
gint *shift,
gint *prec)
{
*shift = 0;
*prec = 0;
while (!(mask & 0x1))
{
(*shift)++;
mask >>= 1;
}
while (mask & 0x1)
{
(*prec)++;
mask >>= 1;
}
}
static guint
gdk_visual_hash (Visual *key)
{
return key->visualid;
}
static gint
gdk_visual_compare (Visual *a,
Visual *b)
{
return (a->visualid == b->visualid);
}