Initial revisionXORG-STABLE

1 files changed, 361 insertions, 0 deletions

diff --git a/src/display.c b/src/display.c
new file mode 100644
index 0000000..1f41a57
--- /dev/null
+++ b/src/display.c
@@ -0,0 +1,361 @@
+/*
+ * $XFree86: xc/lib/Xcursor/display.c,v 1.6 2003/02/20 03:13:50 dawes Exp $
+ *
+ * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "xcursorint.h"
+#include <X11/Xlibint.h>
+#include <ctype.h>
+
+static XcursorDisplayInfo *_XcursorDisplayInfo;
+
+static int
+_XcursorCloseDisplay (Display *dpy, XExtCodes *codes)
+{
+    XcursorDisplayInfo  *info, **prev;
+
+    /*
+     * Unhook from the global list
+     */
+    _XLockMutex (_Xglobal_lock);
+    for (prev = &_XcursorDisplayInfo; (info = *prev); prev = &(*prev)->next)
+	if (info->display == dpy)
+	{
+            *prev = info->next;
+	    break;
+	}
+    _XUnlockMutex (_Xglobal_lock);
+    
+    if (info->theme)
+	free (info->theme);
+    free (info);
+    return 0;
+}
+
+static int
+_XcursorDefaultParseBool (char *v)
+{
+    char    c0, c1;
+
+    c0 = *v;
+    if (isupper ((int)c0))
+	c0 = tolower (c0);
+    if (c0 == 't' || c0 == 'y' || c0 == '1')
+	return 1;
+    if (c0 == 'f' || c0 == 'n' || c0 == '0')
+	return 0;
+    if (c0 == 'o')
+    {
+	c1 = v[1];
+	if (isupper ((int)c1))
+	    c1 = tolower (c1);
+	if (c1 == 'n')
+	    return 1;
+	if (c1 == 'f')
+	    return 0;
+    }
+    return -1;
+}
+
+XcursorDisplayInfo *
+_XcursorGetDisplayInfo (Display *dpy)
+{
+    XcursorDisplayInfo	*info, **prev, *old;
+    int			event_base, error_base;
+    int			major, minor;
+    char		*v;
+    int			i;
+
+    _XLockMutex (_Xglobal_lock);
+    for (prev = &_XcursorDisplayInfo; (info = *prev); prev = &(*prev)->next)
+    {
+	if (info->display == dpy)
+	{
+	    /*
+	     * MRU the list
+	     */
+	    if (prev != &_XcursorDisplayInfo)
+	    {
+		*prev = info->next;
+		info->next = _XcursorDisplayInfo;
+		_XcursorDisplayInfo = info;
+	    }
+	    break;
+	}
+    }
+    _XUnlockMutex (_Xglobal_lock);
+    if (info)
+        return info;
+    info = (XcursorDisplayInfo *) malloc (sizeof (XcursorDisplayInfo));
+    if (!info)
+	return 0;
+    info->next = 0;
+    info->display = dpy;
+    
+    info->codes = XAddExtension (dpy);
+    if (!info->codes)
+    {
+	free (info);
+	return 0;
+    }
+    (void) XESetCloseDisplay (dpy, info->codes->extension, _XcursorCloseDisplay);
+
+    /*
+     * Check whether the display supports the Render CreateCursor request
+     */
+    info->has_render_cursor = XcursorFalse;
+    info->has_anim_cursor = XcursorFalse;
+    if (XRenderQueryExtension (dpy, &event_base, &error_base) &&
+	XRenderQueryVersion (dpy, &major, &minor))
+    {
+	if (major > 0 || minor >= 5)
+	{
+	    info->has_render_cursor = XcursorTrue;
+	    v = getenv ("XCURSOR_CORE");
+	    if (!v)
+		v = XGetDefault (dpy, "Xcursor", "core");
+	    if (v && _XcursorDefaultParseBool (v) == 1)
+		info->has_render_cursor = XcursorFalse;
+	}
+	if (info->has_render_cursor && (major > 0 || minor >= 8))
+	{
+	    info->has_anim_cursor = XcursorTrue;
+	    v = getenv ("XCURSOR_ANIM");
+	    if (!v)
+		v = XGetDefault (dpy, "Xcursor", "anim");
+	    if (v && _XcursorDefaultParseBool (v) == 0)
+		info->has_anim_cursor = XcursorFalse;
+	}
+    }
+    
+    info->size = 0;
+
+    /*
+     * Get desired cursor size
+     */
+    v = getenv ("XCURSOR_SIZE");
+    if (!v)
+	v = XGetDefault (dpy, "Xcursor", "size");
+    if (v)
+	info->size = atoi (v);
+    
+    /*
+     * Use the Xft size to guess a size; make cursors 16 "points" tall
+     */
+    if (info->size == 0)
+    {
+	int dpi = 0;
+	v = XGetDefault (dpy, "Xft", "dpi");
+	if (v)
+	    dpi = atoi (v);
+	if (dpi)
+	    info->size = dpi * 16 / 72;
+    }
+    
+    /*
+     * Use display size to guess a size
+     */
+    if (info->size == 0)
+    {
+	int dim;
+	    
+	if (DisplayHeight (dpy, DefaultScreen (dpy)) < 
+	    DisplayWidth (dpy, DefaultScreen (dpy)))
+	    dim = DisplayHeight (dpy, DefaultScreen (dpy));
+	else
+	    dim = DisplayWidth (dpy, DefaultScreen (dpy));
+	/*
+	 * 16 pixels on a display of dimension 768
+	 */
+	info->size = dim / 48;
+    }
+    
+    info->theme = 0;
+
+    /*
+     * Get the desired theme
+     */
+    v = getenv ("XCURSOR_THEME");
+    if (!v)
+	v = XGetDefault (dpy, "Xcursor", "theme");
+    if (v)
+    {
+	info->theme = malloc (strlen (v) + 1);
+	if (info->theme)
+	    strcpy (info->theme, v);
+    }
+
+    /*
+     * Get the desired dither
+     */
+    info->dither = XcursorDitherThreshold;
+    v = getenv ("XCURSOR_DITHER");
+    if (!v)
+	v = XGetDefault (dpy, "Xcursor", "dither");
+    if (v)
+    {
+	if (!strcmp (v, "threshold"))
+	    info->dither = XcursorDitherThreshold;
+	if (!strcmp (v, "median"))
+	    info->dither = XcursorDitherMedian;
+	if (!strcmp (v, "ordered"))
+	    info->dither = XcursorDitherOrdered;
+	if (!strcmp (v, "diffuse"))
+	    info->dither = XcursorDitherDiffuse;
+    }
+
+    info->theme_core = False;
+    /*
+     * Find out if core cursors should
+     * be themed
+     */
+    v = getenv ("XCURSOR_THEME_CORE");
+    if (!v)
+	v = XGetDefault (dpy, "Xcursor", "theme_core");
+    if (v)
+    {
+	i = _XcursorDefaultParseBool (v);
+	if (i >= 0)
+	    info->theme_core = i;
+    }
+
+    info->fonts = 0;
+    for (i = 0; i < NUM_BITMAPS; i++)
+	info->bitmaps[i].bitmap = None;
+
+    /*
+     * Link new info info list, making sure another
+     * thread hasn't inserted something into the list while
+     * this one was busy setting up the data
+     */
+    _XLockMutex (_Xglobal_lock);
+    for (old = _XcursorDisplayInfo; old; old = old->next)
+	if (old->display == dpy)
+	    break;
+    if (old)
+    {
+	if (info->theme)
+	    free (info->theme);
+	free (info);
+	info = old;
+    }
+    else
+    {
+	info->next = _XcursorDisplayInfo;
+	_XcursorDisplayInfo = info;
+    }
+    _XUnlockMutex (_Xglobal_lock);
+    
+    return info;
+}
+
+XcursorBool
+XcursorSupportsARGB (Display *dpy)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    return info && info->has_render_cursor;
+}
+
+XcursorBool
+XcursorSupportsAnim (Display *dpy)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    return info && info->has_anim_cursor;
+}
+
+XcursorBool
+XcursorSetDefaultSize (Display *dpy, int size)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    if (!info)
+	return XcursorFalse;
+    info->size = size;
+    return XcursorTrue;
+}
+
+int
+XcursorGetDefaultSize (Display *dpy)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    if (!info)
+	return 0;
+    return info->size;
+}
+
+XcursorBool
+XcursorSetTheme (Display *dpy, const char *theme)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+    char		*copy;
+
+    if (!info)
+	return XcursorFalse;
+    if (theme)
+    {
+	copy = malloc (strlen (theme) + 1);
+	if (!copy)
+	    return XcursorFalse;
+	strcpy (copy, theme);
+    }
+    else
+	copy = 0;
+    if (info->theme)
+	free (info->theme);
+    info->theme = copy;
+    return XcursorTrue;
+}
+
+char *
+XcursorGetTheme (Display *dpy)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    if (!info)
+	return 0;
+    return info->theme;
+}
+
+XcursorBool
+XcursorGetThemeCore (Display *dpy)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    if (!info)
+	return XcursorFalse;
+    return info->theme_core;
+    
+}
+
+XcursorBool
+XcursorSetThemeCore (Display *dpy, XcursorBool theme_core)
+{
+    XcursorDisplayInfo	*info = _XcursorGetDisplayInfo (dpy);
+
+    if (!info)
+	return XcursorFalse;
+    info->theme_core = theme_core;
+    return XcursorTrue;
+}