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port to icon cache

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2002-02-09  Havoc Pennington  <hp@pobox.com>

	* src/window.c (update_icon): port to icon cache

	* src/iconcache.c, src/iconcache.c: begin process of cleaning up
	window.c by moving the icon-reading code in here, based on the
	code in libwnck, which was in turn based on the earlier metacity
	code
This commit is contained in:
Havoc Pennington 2002-02-09 23:03:52 +00:00 committed by Havoc Pennington
parent 29a86695d1
commit 245c9c2d7e
9 changed files with 992 additions and 579 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2002-02-09 Havoc Pennington <hp@pobox.com>
* src/window.c (update_icon): port to icon cache
* src/iconcache.c, src/iconcache.c: begin process of cleaning up
window.c by moving the icon-reading code in here, based on the
code in libwnck, which was in turn based on the earlier metacity
code
2002-02-09 Havoc Pennington <hp@pobox.com>
* src/stack.c (meta_stack_sync_to_server): hmm, and don't set

2
src/Makefile.am
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@ -23,6 +23,8 @@ metacity_SOURCES= \
frames.h \
gradient.c \
gradient.h \
iconcache.c \
iconcache.h \
inlinepixbufs.h \
keybindings.c \
keybindings.h \

836
src/iconcache.c Normal file
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@ -0,0 +1,836 @@
/* Metacity window icons */
/*
* Copyright (C) 2002 Havoc Pennington
*
* 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.
*/
#include "iconcache.h"
#include "ui.h"
#include "errors.h"
#include <X11/Xatom.h>
/* The icon-reading code is also in libwnck, please sync bugfixes */
static void
get_fallback_icons (MetaScreen *screen,
GdkPixbuf **iconp,
int ideal_width,
int ideal_height,
GdkPixbuf **mini_iconp,
int ideal_mini_width,
int ideal_mini_height)
{
/* we don't scale, should be fixed if we ever un-hardcode the icon
* size
*/
*iconp = meta_ui_get_default_window_icon (screen->ui);
*mini_iconp = meta_ui_get_default_mini_icon (screen->ui);
}
static gboolean
find_largest_sizes (gulong *data,
int nitems,
int *width,
int *height)
{
*width = 0;
*height = 0;
while (nitems > 0)
{
int w, h;
gboolean replace;
replace = FALSE;
if (nitems < 3)
return FALSE; /* no space for w, h */
w = data[0];
h = data[1];
if (nitems < ((w * h) + 2))
return FALSE; /* not enough data */
*width = MAX (w, *width);
*height = MAX (h, *height);
data += (w * h) + 2;
nitems -= (w * h) + 2;
}
return TRUE;
}
static gboolean
find_best_size (gulong *data,
int nitems,
int ideal_width,
int ideal_height,
int *width,
int *height,
gulong **start)
{
int best_w;
int best_h;
gulong *best_start;
int max_width, max_height;
*width = 0;
*height = 0;
*start = NULL;
if (!find_largest_sizes (data, nitems, &max_width, &max_height))
return FALSE;
if (ideal_width < 0)
ideal_width = max_width;
if (ideal_height < 0)
ideal_height = max_height;
best_w = 0;
best_h = 0;
best_start = NULL;
while (nitems > 0)
{
int w, h;
gboolean replace;
replace = FALSE;
if (nitems < 3)
return FALSE; /* no space for w, h */
w = data[0];
h = data[1];
if (nitems < ((w * h) + 2))
break; /* not enough data */
if (best_start == NULL)
{
replace = TRUE;
}
else
{
/* work with averages */
const int ideal_size = (ideal_width + ideal_height) / 2;
int best_size = (best_w + best_h) / 2;
int this_size = (w + h) / 2;
/* larger than desired is always better than smaller */
if (best_size < ideal_size &&
this_size >= ideal_size)
replace = TRUE;
/* if we have too small, pick anything bigger */
else if (best_size < ideal_size &&
this_size > best_size)
replace = TRUE;
/* if we have too large, pick anything smaller
* but still >= the ideal
*/
else if (best_size > ideal_size &&
this_size >= ideal_size &&
this_size < best_size)
replace = TRUE;
}
if (replace)
{
best_start = data + 2;
best_w = w;
best_h = h;
}
data += (w * h) + 2;
nitems -= (w * h) + 2;
}
if (best_start)
{
*start = best_start;
*width = best_w;
*height = best_h;
return TRUE;
}
else
return FALSE;
}
static void
argbdata_to_pixdata (gulong *argb_data, int len, guchar **pixdata)
{
guchar *p;
int i;
*pixdata = g_new (guchar, len * 4);
p = *pixdata;
/* One could speed this up a lot. */
i = 0;
while (i < len)
{
guint argb;
guint rgba;
argb = argb_data[i];
rgba = (argb << 8) | (argb >> 24);
*p = rgba >> 24;
++p;
*p = (rgba >> 16) & 0xff;
++p;
*p = (rgba >> 8) & 0xff;
++p;
*p = rgba & 0xff;
++p;
++i;
}
}
static gboolean
read_rgb_icon (MetaDisplay *display,
Window xwindow,
int ideal_width,
int ideal_height,
int ideal_mini_width,
int ideal_mini_height,
int *width,
int *height,
guchar **pixdata,
int *mini_width,
int *mini_height,
guchar **mini_pixdata)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
int result, err;
gulong *data;
gulong *best;
int w, h;
gulong *best_mini;
int mini_w, mini_h;
meta_error_trap_push (display);
type = None;
data = NULL;
result = XGetWindowProperty (display->xdisplay,
xwindow,
display->atom_net_wm_icon,
0, G_MAXLONG,
False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, ((guchar **)&data));
err = meta_error_trap_pop (display);
if (err != Success ||
result != Success)
return FALSE;
if (type != XA_CARDINAL)
{
XFree (data);
return FALSE;
}
if (!find_best_size (data, nitems,
ideal_width, ideal_height,
&w, &h, &best))
{
XFree (data);
return FALSE;
}
if (!find_best_size (data, nitems,
ideal_mini_width, ideal_mini_height,
&mini_w, &mini_h, &best_mini))
{
XFree (data);
return FALSE;
}
*width = w;
*height = h;
*mini_width = mini_w;
*mini_height = mini_h;
argbdata_to_pixdata (best, w * h, pixdata);
argbdata_to_pixdata (best_mini, mini_w * mini_h, mini_pixdata);
XFree (data);
return TRUE;
}
static void
free_pixels (guchar *pixels, gpointer data)
{
g_free (pixels);
}
static void
get_pixmap_geometry (MetaDisplay *display,
Pixmap pixmap,
int *w,
int *h,
int *d)
{
Window root_ignored;
int x_ignored, y_ignored;
guint width, height;
guint border_width_ignored;
guint depth;
if (w)
*w = 1;
if (h)
*h = 1;
if (d)
*d = 1;
XGetGeometry (display->xdisplay,
pixmap, &root_ignored, &x_ignored, &y_ignored,
&width, &height, &border_width_ignored, &depth);
if (w)
*w = width;
if (h)
*h = height;
if (d)
*d = depth;
}
static GdkPixbuf*
apply_mask (GdkPixbuf *pixbuf,
GdkPixbuf *mask)
{
int w, h;
int i, j;
GdkPixbuf *with_alpha;
guchar *src;
guchar *dest;
int src_stride;
int dest_stride;
w = MIN (gdk_pixbuf_get_width (mask), gdk_pixbuf_get_width (pixbuf));
h = MIN (gdk_pixbuf_get_height (mask), gdk_pixbuf_get_height (pixbuf));
with_alpha = gdk_pixbuf_add_alpha (pixbuf, FALSE, 0, 0, 0);
dest = gdk_pixbuf_get_pixels (with_alpha);
src = gdk_pixbuf_get_pixels (mask);
dest_stride = gdk_pixbuf_get_rowstride (with_alpha);
src_stride = gdk_pixbuf_get_rowstride (mask);
i = 0;
while (i < h)
{
j = 0;
while (j < w)
{
guchar *s = src + i * src_stride + j * 3;
guchar *d = dest + i * dest_stride + j * 4;
/* s[0] == s[1] == s[2], they are 255 if the bit was set, 0
* otherwise
*/
if (s[0] == 0)
d[3] = 0; /* transparent */
else
d[3] = 255; /* opaque */
++j;
}
++i;
}
return with_alpha;
}
static gboolean
try_pixmap_and_mask (MetaDisplay *display,
Pixmap src_pixmap,
Pixmap src_mask,
GdkPixbuf **iconp,
int ideal_width,
int ideal_height,
GdkPixbuf **mini_iconp,
int ideal_mini_width,
int ideal_mini_height)
{
GdkPixbuf *unscaled = NULL;
GdkPixbuf *mask = NULL;
int w, h;
if (src_pixmap == None)
return FALSE;
meta_error_trap_push (display);
get_pixmap_geometry (display, src_pixmap, &w, &h, NULL);
unscaled = meta_gdk_pixbuf_get_from_pixmap (NULL,
src_pixmap,
0, 0, 0, 0,
w, h);
if (unscaled && src_mask != None)
{
get_pixmap_geometry (display, src_mask, &w, &h, NULL);
mask = meta_gdk_pixbuf_get_from_pixmap (NULL,
src_mask,
0, 0, 0, 0,
w, h);
}
meta_error_trap_pop (display);
if (mask)
{
GdkPixbuf *masked;
masked = apply_mask (unscaled, mask);
g_object_unref (G_OBJECT (unscaled));
unscaled = masked;
g_object_unref (G_OBJECT (mask));
mask = NULL;
}
if (unscaled)
{
*iconp =
gdk_pixbuf_scale_simple (unscaled,
ideal_width > 0 ? ideal_width :
gdk_pixbuf_get_width (unscaled),
ideal_height > 0 ? ideal_height :
gdk_pixbuf_get_height (unscaled),
GDK_INTERP_BILINEAR);
*mini_iconp =
gdk_pixbuf_scale_simple (unscaled,
ideal_mini_width > 0 ? ideal_mini_width :
gdk_pixbuf_get_width (unscaled),
ideal_mini_height > 0 ? ideal_mini_height :
gdk_pixbuf_get_height (unscaled),
GDK_INTERP_BILINEAR);
g_object_unref (G_OBJECT (unscaled));
if (*iconp && *mini_iconp)
return TRUE;
else
{
if (*iconp)
g_object_unref (G_OBJECT (*iconp));
if (*mini_iconp)
g_object_unref (G_OBJECT (*mini_iconp));
return FALSE;
}
}
else
return FALSE;
}
static void
get_kwm_win_icon (MetaDisplay *display,
Window xwindow,
Pixmap *pixmap,
Pixmap *mask)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
Pixmap *icons;
int err, result;
*pixmap = None;
*mask = None;
meta_error_trap_push (display);
icons = NULL;
result = XGetWindowProperty (display->xdisplay, xwindow,
display->atom_kwm_win_icon,
0, G_MAXLONG,
False,
display->atom_kwm_win_icon,
&type, &format, &nitems,
&bytes_after, (guchar **)&icons);
err = meta_error_trap_pop (display);
if (err != Success ||
result != Success)
return;
if (type != display->atom_kwm_win_icon)
{
XFree (icons);
return;
}
*pixmap = icons[0];
*mask = icons[1];
XFree (icons);
return;
}
typedef enum
{
/* These MUST be in ascending order of preference;
* i.e. if we get _NET_WM_ICON and already have
* WM_HINTS, we prefer _NET_WM_ICON
*/
USING_NO_ICON,
USING_FALLBACK_ICON,
USING_KWM_WIN_ICON,
USING_WM_HINTS,
USING_NET_WM_ICON
} IconOrigin;
void
meta_icon_cache_init (MetaIconCache *icon_cache)
{
g_return_if_fail (icon_cache != NULL);
icon_cache->origin = USING_NO_ICON;
icon_cache->prev_pixmap = None;
#if 0
icon_cache->icon = NULL;
icon_cache->mini_icon = NULL;
icon_cache->ideal_width = -1; /* won't be a legit width */
icon_cache->ideal_height = -1;
icon_cache->ideal_mini_width = -1;
icon_cache->ideal_mini_height = -1;
#endif
icon_cache->want_fallback = TRUE;
icon_cache->wm_hints_dirty = TRUE;
icon_cache->kwm_win_icon_dirty = TRUE;
icon_cache->net_wm_icon_dirty = TRUE;
}
static void
clear_icon_cache (MetaIconCache *icon_cache,
gboolean dirty_all)
{
#if 0
if (icon_cache->icon)
g_object_unref (G_OBJECT (icon_cache->icon));
icon_cache->icon = NULL;
if (icon_cache->mini_icon)
g_object_unref (G_OBJECT (icon_cache->mini_icon));
icon_cache->mini_icon = NULL;
#endif
icon_cache->origin = USING_NO_ICON;
if (dirty_all)
{
icon_cache->wm_hints_dirty = TRUE;
icon_cache->kwm_win_icon_dirty = TRUE;
icon_cache->net_wm_icon_dirty = TRUE;
}
}
void
meta_icon_cache_free (MetaIconCache *icon_cache)
{
clear_icon_cache (icon_cache, FALSE);
}
void
meta_icon_cache_property_changed (MetaIconCache *icon_cache,
MetaDisplay *display,
Atom atom)
{
if (atom == display->atom_net_wm_icon)
icon_cache->net_wm_icon_dirty = TRUE;
else if (atom == display->atom_kwm_win_icon)
icon_cache->kwm_win_icon_dirty = TRUE;
else if (atom == XA_WM_HINTS)
icon_cache->wm_hints_dirty = TRUE;
}
gboolean
meta_icon_cache_get_icon_invalidated (MetaIconCache *icon_cache)
{
if (icon_cache->origin <= USING_KWM_WIN_ICON &&
icon_cache->kwm_win_icon_dirty)
return TRUE;
else if (icon_cache->origin <= USING_WM_HINTS &&
icon_cache->wm_hints_dirty)
return TRUE;
else if (icon_cache->origin <= USING_NET_WM_ICON &&
icon_cache->net_wm_icon_dirty)
return TRUE;
else if (icon_cache->origin < USING_FALLBACK_ICON &&
icon_cache->want_fallback)
return TRUE;
else if (icon_cache->origin == USING_NO_ICON)
return TRUE;
else if (icon_cache->origin == USING_FALLBACK_ICON &&
!icon_cache->want_fallback)
return TRUE;
else
return FALSE;
}
static void
replace_cache (MetaIconCache *icon_cache,
IconOrigin origin,
GdkPixbuf *new_icon,
GdkPixbuf *new_mini_icon)
{
clear_icon_cache (icon_cache, FALSE);
icon_cache->origin = origin;
#if 0
if (new_icon)
g_object_ref (G_OBJECT (new_icon));
icon_cache->icon = new_icon;
if (new_mini_icon)
g_object_ref (G_OBJECT (new_mini_icon));
icon_cache->mini_icon = new_mini_icon;
#endif
}
static GdkPixbuf*
scaled_from_pixdata (guchar *pixdata,
int w,
int h,
int new_w,
int new_h)
{
GdkPixbuf *src;
GdkPixbuf *dest;
src = gdk_pixbuf_new_from_data (pixdata,
GDK_COLORSPACE_RGB,
TRUE,
8,
w, h, w * 4,
free_pixels,
NULL);
if (src == NULL)
return NULL;
if (w != new_w || h != new_h)
{
dest = gdk_pixbuf_scale_simple (src, new_w, new_h, GDK_INTERP_BILINEAR);
g_object_unref (G_OBJECT (src));
}
else
{
dest = src;
}
return dest;
}
gboolean
meta_read_icons (MetaScreen *screen,
Window xwindow,
MetaIconCache *icon_cache,
Pixmap wm_hints_pixmap,
Pixmap wm_hints_mask,
GdkPixbuf **iconp,
int ideal_width,
int ideal_height,
GdkPixbuf **mini_iconp,
int ideal_mini_width,
int ideal_mini_height)
{
guchar *pixdata;
int w, h;
guchar *mini_pixdata;
int mini_w, mini_h;
Pixmap pixmap;
Pixmap mask;
/* Return value is whether the icon changed */
g_return_val_if_fail (icon_cache != NULL, FALSE);
*iconp = NULL;
*mini_iconp = NULL;
#if 0
if (ideal_width != icon_cache->ideal_width ||
ideal_height != icon_cache->ideal_height ||
ideal_mini_width != icon_cache->ideal_mini_width ||
ideal_mini_height != icon_cache->ideal_mini_height)
clear_icon_cache (icon_cache, TRUE);
icon_cache->ideal_width = ideal_width;
icon_cache->ideal_height = ideal_height;
icon_cache->ideal_mini_width = ideal_mini_width;
icon_cache->ideal_mini_height = ideal_mini_height;
#endif
if (!meta_icon_cache_get_icon_invalidated (icon_cache))
return FALSE; /* we have no new info to use */
pixdata = NULL;
/* Our algorithm here assumes that we can't have for example origin
* < USING_NET_WM_ICON and icon_cache->net_wm_icon_dirty == FALSE
* unless we have tried to read NET_WM_ICON.
*
* Put another way, if an icon origin is not dirty, then we have
* tried to read it at the current size. If it is dirty, then
* we haven't done that since the last change.
*/
if (icon_cache->origin <= USING_NET_WM_ICON &&
icon_cache->net_wm_icon_dirty)
{
icon_cache->net_wm_icon_dirty = FALSE;
if (read_rgb_icon (screen->display, xwindow,
ideal_width, ideal_height,
ideal_mini_width, ideal_mini_height,
&w, &h, &pixdata,
&mini_w, &mini_h, &mini_pixdata))
{
*iconp = scaled_from_pixdata (pixdata, w, h,
ideal_width, ideal_height);
*mini_iconp = scaled_from_pixdata (mini_pixdata, mini_w, mini_h,
ideal_mini_width, ideal_mini_height);
if (*iconp && *mini_iconp)
{
replace_cache (icon_cache, USING_NET_WM_ICON,
*iconp, *mini_iconp);
return TRUE;
}
else
{
if (*iconp)
g_object_unref (G_OBJECT (*iconp));
if (*mini_iconp)
g_object_unref (G_OBJECT (*mini_iconp));
}
}
}
if (icon_cache->origin <= USING_WM_HINTS &&
icon_cache->wm_hints_dirty)
{
icon_cache->wm_hints_dirty = FALSE;
pixmap = wm_hints_pixmap;
mask = wm_hints_mask;
/* We won't update if pixmap is unchanged;
* avoids a get_from_drawable() on every geometry
* hints change
*/
if ((pixmap != icon_cache->prev_pixmap ||
mask != icon_cache->prev_mask) &&
pixmap != None)
{
if (try_pixmap_and_mask (screen->display,
pixmap, mask,
iconp, ideal_width, ideal_height,
mini_iconp, ideal_mini_width, ideal_mini_height))
{
icon_cache->prev_pixmap = pixmap;
icon_cache->prev_mask = mask;
replace_cache (icon_cache, USING_WM_HINTS,
*iconp, *mini_iconp);
return TRUE;
}
}
}
if (icon_cache->origin <= USING_KWM_WIN_ICON &&
icon_cache->kwm_win_icon_dirty)
{
icon_cache->kwm_win_icon_dirty = FALSE;
get_kwm_win_icon (screen->display, xwindow, &pixmap, &mask);
if ((pixmap != icon_cache->prev_pixmap ||
mask != icon_cache->prev_mask) &&
pixmap != None)
{
if (try_pixmap_and_mask (screen->display, pixmap, mask,
iconp, ideal_width, ideal_height,
mini_iconp, ideal_mini_width, ideal_mini_height))
{
icon_cache->prev_pixmap = pixmap;
icon_cache->prev_mask = mask;
replace_cache (icon_cache, USING_KWM_WIN_ICON,
*iconp, *mini_iconp);
return TRUE;
}
}
}
if (icon_cache->want_fallback &&
icon_cache->origin < USING_FALLBACK_ICON)
{
get_fallback_icons (screen,
iconp,
ideal_width,
ideal_height,
mini_iconp,
ideal_mini_width,
ideal_mini_height);
replace_cache (icon_cache, USING_FALLBACK_ICON,
*iconp, *mini_iconp);
return TRUE;
}
if (!icon_cache->want_fallback &&
icon_cache->origin == USING_FALLBACK_ICON)
{
/* Get rid of current icon */
clear_icon_cache (icon_cache, FALSE);
return TRUE;
}
/* found nothing new */
return FALSE;
}

64
src/iconcache.h Normal file
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@ -0,0 +1,64 @@
/* Metacity window icons */
/*
* Copyright (C) 2002 Havoc Pennington
*
* 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.
*/
#ifndef META_ICON_CACHE_H
#define META_ICON_CACHE_H
#include "screen.h"
typedef struct _MetaIconCache MetaIconCache;
struct _MetaIconCache
{
int origin;
Pixmap prev_pixmap;
Pixmap prev_mask;
guint want_fallback : 1;
/* TRUE if these props have changed */
guint wm_hints_dirty : 1;
guint kwm_win_icon_dirty : 1;
guint net_wm_icon_dirty : 1;
};
void meta_icon_cache_init (MetaIconCache *icon_cache);
void meta_icon_cache_free (MetaIconCache *icon_cache);
void meta_icon_cache_property_changed (MetaIconCache *icon_cache,
MetaDisplay *display,
Atom atom);
gboolean meta_icon_cache_get_icon_invalidated (MetaIconCache *icon_cache);
gboolean meta_read_icons (MetaScreen *screen,
Window xwindow,
MetaIconCache *icon_cache,
Pixmap wm_hints_pixmap,
Pixmap wm_hints_mask,
GdkPixbuf **iconp,
int ideal_width,
int ideal_height,
GdkPixbuf **mini_iconp,
int ideal_mini_width,
int ideal_mini_height);
#endif

5
src/tools/Makefile.am
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@ -1,5 +1,8 @@
INCLUDES=@METACITY_WINDOW_DEMO_CFLAGS@ @METACITY_MESSAGE_CFLAGS@
icondir=$(pkgdatadir)/icons
icon_DATA=metacity-window-demo.png
INCLUDES=@METACITY_WINDOW_DEMO_CFLAGS@ @METACITY_MESSAGE_CFLAGS@ -DMETACITY_ICON_DIR=\"$(pkgdatadir)/icons\"
metacity_message_SOURCES= \
metacity-message.c

21
src/tools/metacity-window-demo.c
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@ -153,8 +153,29 @@ set_gtk_window_type (GtkWindow *window,
int
main (int argc, char **argv)
{
GList *list;
GdkPixbuf *pixbuf;
GError *err;
gtk_init (&argc, &argv);
err = NULL;
pixbuf = gdk_pixbuf_new_from_file (METACITY_ICON_DIR"/metacity-window-demo.png",
&err);
if (pixbuf)
{
list = g_list_prepend (NULL, pixbuf);
gtk_window_set_default_icon_list (list);
g_list_free (list);
g_object_unref (G_OBJECT (pixbuf));
}
else
{
g_printerr ("Could not load icon: %s\n", err->message);
g_error_free (err);
}
do_appwindow ();
gtk_main ();

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src/tools/metacity-window-demo.png Normal file
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618
src/window.c
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@ -81,9 +81,7 @@ static void update_role (MetaWindow *window);
static void update_net_wm_type (MetaWindow *window);
static int update_initial_workspace (MetaWindow *window);
static int update_icon_name (MetaWindow *window);
static int update_icon (MetaWindow *window,
gboolean reread_rgb_icon);
static int update_kwm_icon (MetaWindow *window);
static int update_icon (MetaWindow *window);
static void update_struts (MetaWindow *window);
static void recalc_window_type (MetaWindow *window);
static void recalc_window_features (MetaWindow *window);
@ -299,6 +297,9 @@ meta_window_new (MetaDisplay *display, Window xwindow,
window->icon_name = NULL;
window->icon = NULL;
window->mini_icon = NULL;
meta_icon_cache_init (&window->icon_cache);
window->wm_hints_pixmap = None;
window->wm_hints_mask = None;
window->desc = g_strdup_printf ("0x%lx", window->xwindow);
@ -360,14 +361,6 @@ meta_window_new (MetaDisplay *display, Window xwindow,
window->xtransient_for = None;
window->xgroup_leader = None;
window->xclient_leader = None;
window->icon_pixmap = None;
window->icon_mask = None;
window->kwm_pixmap = None;
window->kwm_mask = None;
window->using_rgb_icon = FALSE;
window->type = META_WINDOW_NORMAL;
window->type_atom = None;
@ -407,9 +400,7 @@ meta_window_new (MetaDisplay *display, Window xwindow,
update_net_wm_type (window);
update_initial_workspace (window);
update_icon_name (window);
update_kwm_icon (window);
/* should come after wm_hints and kwm_icon updates */
update_icon (window, TRUE);
update_icon (window);
if (!window->mapped &&
(window->size_hints.flags & PPosition) == 0 &&
@ -781,6 +772,8 @@ meta_window_free (MetaWindow *window)
if (window->mini_icon)
g_object_unref (G_OBJECT (window->mini_icon));
meta_icon_cache_free (&window->icon_cache);
g_free (window->sm_client_id);
g_free (window->role);
@ -3186,9 +3179,13 @@ process_property_notify (MetaWindow *window,
else if (event->atom == XA_WM_HINTS)
{
meta_verbose ("Property notify on %s for WM_HINTS\n", window->desc);
meta_icon_cache_property_changed (&window->icon_cache,
window->display,
event->atom);
update_wm_hints (window);
update_icon (window, FALSE);
update_icon (window);
meta_window_queue_move_resize (window);
}
@ -3252,13 +3249,20 @@ process_property_notify (MetaWindow *window,
else if (event->atom == window->display->atom_net_wm_icon)
{
meta_verbose ("Property notify on %s for NET_WM_ICON\n", window->desc);
update_icon (window, TRUE);
meta_icon_cache_property_changed (&window->icon_cache,
window->display,
event->atom);
update_icon (window);
}
else if (event->atom == window->display->atom_kwm_win_icon)
{
meta_verbose ("Property notify on %s for KWM_WIN_ICON\n", window->desc);
update_kwm_icon (window);
update_icon (window, FALSE);
meta_icon_cache_property_changed (&window->icon_cache,
window->display,
event->atom);
update_icon (window);
}
else if (event->atom == window->display->atom_net_wm_strut)
{
@ -3650,18 +3654,13 @@ static int
update_wm_hints (MetaWindow *window)
{
XWMHints *hints;
Pixmap old_icon;
Pixmap old_mask;
old_icon = window->icon_pixmap;
old_mask = window->icon_mask;
/* Fill in defaults */
window->input = FALSE;
window->initially_iconic = FALSE;
window->xgroup_leader = None;
window->icon_pixmap = None;
window->icon_mask = None;
window->wm_hints_pixmap = None;
window->wm_hints_mask = None;
meta_error_trap_push (window->display);
@ -3678,23 +3677,16 @@ update_wm_hints (MetaWindow *window)
window->xgroup_leader = hints->window_group;
if (hints->flags & IconPixmapHint)
window->icon_pixmap = hints->icon_pixmap;
window->wm_hints_pixmap = hints->icon_pixmap;
if (hints->flags & IconMaskHint)
window->icon_mask = hints->icon_mask;
if (window->icon_pixmap != old_icon ||
window->icon_mask != old_mask)
{
meta_verbose ("Icon pixmap or mask changed in WM_HINTS for %s\n",
window->desc);
update_icon (window, FALSE);
}
window->wm_hints_mask = hints->icon_mask;
meta_verbose ("Read WM_HINTS input: %d iconic: %d group leader: 0x%lx icon: 0x%lx mask: 0x%lx\n",
meta_verbose ("Read WM_HINTS input: %d iconic: %d group leader: 0x%lx pixmap: 0x%lx mask: 0x%lx\n",
window->input, window->initially_iconic,
window->xgroup_leader, window->icon_pixmap,
window->icon_mask);
window->xgroup_leader,
window->wm_hints_pixmap,
window->wm_hints_mask);
meta_XFree (hints);
}
@ -4252,548 +4244,42 @@ update_icon_name (MetaWindow *window)
return meta_error_trap_pop (window->display);
}
static gboolean
find_best_size (gulong *data,
int nitems,
int ideal_width,
int ideal_height,
int *width,
int *height,
gulong **start)
{
int best_w;
int best_h;
gulong *best_start;
*width = 0;
*height = 0;
*start = NULL;
best_w = 0;
best_h = 0;
best_start = NULL;
while (nitems > 0)
{
int w, h;
gboolean replace;
meta_debug_spew ("n_items = %d\n", nitems);
replace = FALSE;
if (nitems < 3)
{
meta_verbose ("_NET_WM_ICON contained too little data\n");
return FALSE;
}
w = data[0];
h = data[1];
meta_debug_spew ("w = %d h = %d\n", w, h);
if (nitems < ((w * h) + 2))
{
meta_verbose ("_NET_WM_ICON contained too little data?\n");
break;
}
if (best_start == NULL)
{
replace = TRUE;
}
else
{
/* work with averages */
const int ideal_size = (ideal_width + ideal_height) / 2;
int best_size = (best_w + best_h) / 2;
int this_size = (w + h) / 2;
/* larger than desired is always better than smaller */
if (best_size < ideal_size &&
this_size >= ideal_size)
replace = TRUE;
/* if we have too small, pick anything bigger */
else if (best_size < ideal_size &&
this_size > best_size)
replace = TRUE;
/* if we have too large, pick anything smaller
* but still >= the ideal
*/
else if (best_size > ideal_size &&
this_size >= ideal_size &&
this_size < best_size)
replace = TRUE;
}
if (replace)
{
best_start = data + 2;
best_w = w;
best_h = h;
}
data += (w * h) + 2;
nitems -= (w * h) + 2;
}
if (best_start)
{
*start = best_start;
*width = best_w;
*height = best_h;
return TRUE;
}
else
return FALSE;
}
static void
argbdata_to_pixdata (gulong *argb_data, int len, guchar **pixdata)
{
guchar *p;
int i;
*pixdata = g_new (guchar, len * 4);
p = *pixdata;
/* One could speed this up a lot. */
i = 0;
while (i < len)
{
guint argb;
guint rgba;
argb = argb_data[i];
rgba = (argb << 8) | (argb >> 24);
*p = rgba >> 24;
++p;
*p = (rgba >> 16) & 0xff;
++p;
*p = (rgba >> 8) & 0xff;
++p;
*p = rgba & 0xff;
++p;
++i;
}
}
static gboolean
read_rgb_icon (MetaWindow *window,
int *width,
int *height,
guchar **pixdata,
int *mini_width,
int *mini_height,
guchar **mini_pixdata)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
int result;
gulong *data; /* FIXME should be guint? */
gulong *best;
int w, h;
gulong *best_mini;
int mini_w, mini_h;
meta_error_trap_push (window->display);
type = None;
data = NULL;
result = XGetWindowProperty (window->display->xdisplay,
window->xwindow,
window->display->atom_net_wm_icon,
0, G_MAXLONG,
False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, ((guchar **)&data));
meta_error_trap_pop (window->display);
if (result != Success || type != XA_CARDINAL)
{
meta_verbose ("%s doesn't seem to set _NET_WM_ICON\n",
window->desc);
return FALSE;
}
if (!find_best_size (data, nitems, META_ICON_WIDTH, META_ICON_HEIGHT,
&w, &h, &best))
{
meta_XFree (data);
return FALSE;
}
if (!find_best_size (data, nitems, META_MINI_ICON_WIDTH, META_MINI_ICON_HEIGHT,
&mini_w, &mini_h, &best_mini))
{
meta_XFree (data);
return FALSE;
}
*width = w;
*height = h;
*mini_width = mini_w;
*mini_height = mini_h;
argbdata_to_pixdata (best, w * h, pixdata);
argbdata_to_pixdata (best_mini, mini_w * mini_h, mini_pixdata);
meta_XFree (data);
return TRUE;
}
static void
clear_icon (MetaWindow *window)
{
if (window->icon)
{
g_object_unref (G_OBJECT (window->icon));
window->icon = NULL;
}
if (window->mini_icon)
{
g_object_unref (G_OBJECT (window->mini_icon));
window->mini_icon = NULL;
}
}
static void
free_pixels (guchar *pixels, gpointer data)
{
g_free (pixels);
}
static void
replace_icon (MetaWindow *window,
GdkPixbuf *unscaled,
GdkPixbuf *unscaled_mini)
{
clear_icon (window);
if (gdk_pixbuf_get_width (unscaled) != META_ICON_WIDTH ||
gdk_pixbuf_get_height (unscaled) != META_ICON_HEIGHT)
{
/* FIXME should keep aspect ratio, but for now assuming
* a square source icon
*/
window->icon = gdk_pixbuf_scale_simple (unscaled,
META_ICON_WIDTH,
META_ICON_HEIGHT,
GDK_INTERP_BILINEAR);
}
else
{
g_object_ref (G_OBJECT (unscaled));
window->icon = unscaled;
}
if (gdk_pixbuf_get_width (unscaled_mini) != META_MINI_ICON_WIDTH ||
gdk_pixbuf_get_height (unscaled_mini) != META_MINI_ICON_HEIGHT)
{
/* FIXME should keep aspect ratio, but for now assuming
* a square source icon
*/
window->mini_icon = gdk_pixbuf_scale_simple (unscaled_mini,
META_MINI_ICON_WIDTH,
META_MINI_ICON_HEIGHT,
GDK_INTERP_BILINEAR);
}
else
{
g_object_ref (G_OBJECT (unscaled_mini));
window->mini_icon = unscaled_mini;
}
}
static void
get_pixmap_geometry (MetaDisplay *display,
Pixmap pixmap,
int *w,
int *h,
int *d)
{
Window root_ignored;
int x_ignored, y_ignored;
guint width, height;
guint border_width_ignored;
guint depth;
if (w)
*w = 1;
if (h)
*h = 1;
if (d)
*d = 1;
XGetGeometry (display->xdisplay,
pixmap, &root_ignored, &x_ignored, &y_ignored,
&width, &height, &border_width_ignored, &depth);
if (w)
*w = width;
if (h)
*h = height;
if (d)
*d = depth;
}
static GdkPixbuf*
apply_mask (GdkPixbuf *pixbuf,
GdkPixbuf *mask)
{
int w, h;
int i, j;
GdkPixbuf *with_alpha;
guchar *src;
guchar *dest;
int src_stride;
int dest_stride;
w = MIN (gdk_pixbuf_get_width (mask), gdk_pixbuf_get_width (pixbuf));
h = MIN (gdk_pixbuf_get_height (mask), gdk_pixbuf_get_height (pixbuf));
with_alpha = gdk_pixbuf_add_alpha (pixbuf, FALSE, 0, 0, 0);
dest = gdk_pixbuf_get_pixels (with_alpha);
src = gdk_pixbuf_get_pixels (mask);
dest_stride = gdk_pixbuf_get_rowstride (with_alpha);
src_stride = gdk_pixbuf_get_rowstride (mask);
i = 0;
while (i < h)
{
j = 0;
while (j < w)
{
guchar *s = src + i * src_stride + j * 3;
guchar *d = dest + i * dest_stride + j * 4;
/* s[0] == s[1] == s[2], they are 255 if the bit was set, 0
* otherwise
*/
if (s[0] == 0)
d[3] = 0; /* transparent */
else
d[3] = 255; /* opaque */
++j;
}
++i;
}
return with_alpha;
}
static gboolean
try_pixmap_and_mask (MetaWindow *window,
Pixmap src_pixmap,
Pixmap src_mask)
{
GdkPixbuf *unscaled = NULL;
GdkPixbuf *mask = NULL;
int w, h;
if (src_pixmap == None)
return FALSE;
meta_error_trap_push (window->display);
get_pixmap_geometry (window->display, src_pixmap,
&w, &h, NULL);
unscaled = meta_gdk_pixbuf_get_from_pixmap (NULL,
src_pixmap,
0, 0, 0, 0,
w, h);
if (unscaled && src_mask != None)
{
get_pixmap_geometry (window->display, src_mask,
&w, &h, NULL);
mask = meta_gdk_pixbuf_get_from_pixmap (NULL,
src_mask,
0, 0, 0, 0,
w, h);
}
meta_error_trap_pop (window->display);
if (mask)
{
GdkPixbuf *masked;
meta_verbose ("Applying mask to icon pixmap\n");
masked = apply_mask (unscaled, mask);
g_object_unref (G_OBJECT (unscaled));
unscaled = masked;
g_object_unref (G_OBJECT (mask));
mask = NULL;
}
if (unscaled)
{
replace_icon (window, unscaled, unscaled);
g_object_unref (G_OBJECT (unscaled));
return TRUE;
}
else
return FALSE;
}
static int
update_icon (MetaWindow *window,
gboolean reload_rgb_icon)
update_icon (MetaWindow *window)
{
GdkPixbuf *icon;
GdkPixbuf *mini_icon;
if (reload_rgb_icon)
icon = NULL;
mini_icon = NULL;
if (meta_read_icons (window->screen,
window->xwindow,
&window->icon_cache,
window->wm_hints_pixmap,
window->wm_hints_mask,
&icon,
META_ICON_WIDTH, META_ICON_HEIGHT,
&mini_icon,
META_MINI_ICON_WIDTH,
META_MINI_ICON_HEIGHT))
{
guchar *pixdata;
int w, h;
guchar *mini_pixdata;
int mini_w, mini_h;
if (window->icon)
g_object_unref (G_OBJECT (window->icon));
pixdata = NULL;
if (window->mini_icon)
g_object_unref (G_OBJECT (window->mini_icon));
if (read_rgb_icon (window, &w, &h, &pixdata,
&mini_w, &mini_h, &mini_pixdata))
{
GdkPixbuf *unscaled;
GdkPixbuf *unscaled_mini;
meta_verbose ("successfully read RGBA icon from _NET_WM_ICON, using w = %d h = %d mini_w = %d mini_h = %d\n", w, h, mini_w, mini_h);
window->using_rgb_icon = TRUE;
unscaled = gdk_pixbuf_new_from_data (pixdata,
GDK_COLORSPACE_RGB,
TRUE,
8,
w, h, w * 4,
free_pixels,
NULL);
unscaled_mini = gdk_pixbuf_new_from_data (mini_pixdata,
GDK_COLORSPACE_RGB,
TRUE,
8,
mini_w, mini_h, mini_w * 4,
free_pixels,
NULL);
replace_icon (window, unscaled, unscaled_mini);
g_object_unref (G_OBJECT (unscaled));
g_object_unref (G_OBJECT (unscaled_mini));
return Success;
}
else
{
if (window->using_rgb_icon)
clear_icon (window);
window->using_rgb_icon = FALSE;
/* We'll try to fall back to something else below. */
}
}
else if (window->using_rgb_icon)
{
/* There's no way we want to use the fallbacks,
* keep using this.
*/
return Success;
window->icon = icon;
window->mini_icon = mini_icon;
}
/* Fallback to pixmap + mask */
if (try_pixmap_and_mask (window,
window->icon_pixmap,
window->icon_mask))
{
meta_verbose ("Using WM_NORMAL_HINTS icon for %s\n", window->desc);
return Success;
}
else
{
meta_verbose ("No WM_NORMAL_HINTS icon, or failed to retrieve it\n");
}
if (try_pixmap_and_mask (window,
window->kwm_pixmap,
window->kwm_mask))
{
meta_verbose ("Using KWM_WIN_ICON for %s\n", window->desc);
return Success;
}
else
{
meta_verbose ("No KWM_WIN_ICON, or failed to retrieve it\n");
}
/* Fallback to a default icon */
if (window->icon == NULL)
window->icon = meta_ui_get_default_window_icon (window->screen->ui);
if (window->mini_icon == NULL)
window->mini_icon = meta_ui_get_default_mini_icon (window->screen->ui);
g_assert (window->icon);
g_assert (window->mini_icon);
return Success;
}
static int
update_kwm_icon (MetaWindow *window)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
Pixmap *icons;
int result;
window->kwm_pixmap = None;
window->kwm_mask = None;
meta_error_trap_push (window->display);
icons = NULL;
result = XGetWindowProperty (window->display->xdisplay, window->xwindow,
window->display->atom_kwm_win_icon,
0, G_MAXLONG,
False, window->display->atom_kwm_win_icon,
&type, &format, &nitems,
&bytes_after, (guchar **)&icons);
meta_error_trap_pop (window->display);
if (result != Success)
return result;
if (type != window->display->atom_kwm_win_icon)
return -1; /* FIXME mem leak? */
window->kwm_pixmap = icons[0];
window->kwm_mask = icons[1];
meta_verbose ("Found KWM_WIN_ICON 0x%lx\n", window->kwm_pixmap);
meta_XFree (icons);
return Success;
}
static GList*
meta_window_get_workspaces (MetaWindow *window)
{

16
src/window.h
View File

@ -25,6 +25,7 @@
#include "screen.h"
#include "util.h"
#include "stack.h"
#include "iconcache.h"
#include <X11/Xutil.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
@ -58,6 +59,9 @@ struct _MetaWindow
char *icon_name;
GdkPixbuf *icon;
GdkPixbuf *mini_icon;
MetaIconCache icon_cache;
Pixmap wm_hints_pixmap;
Pixmap wm_hints_mask;
MetaWindowType type;
Atom type_atom;
@ -77,18 +81,6 @@ struct _MetaWindow
/* Initial workspace property */
int initial_workspace;
Pixmap icon_pixmap;
Pixmap icon_mask;
/* these are legacy and should die once we have _NET_WM_ICON in
* most apps
*/
Pixmap kwm_pixmap;
Pixmap kwm_mask;
/* Whether ->icon is from NET_WM_ICON instead of pixmap */
guint using_rgb_icon : 1;
/* Whether we're maximized */
guint maximized : 1;