* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Lesser 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.
*/
+
+/*
+ * 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 "config.h"
+
+#define GDK_PIXBUF_ENABLE_BACKEND
+
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
-#include "gdk.h"
-#include "gdkprivate.h"
+#ifdef HAVE_XCURSOR
+#include <X11/Xcursor/Xcursor.h>
+#endif
+#ifdef HAVE_XFIXES
+#include <X11/extensions/Xfixes.h>
+#endif
+#include <string.h>
+
+#include "gdkprivate-x11.h"
+#include "gdkcursor.h"
+#include "gdkdisplay-x11.h"
+#include "gdkpixmap-x11.h"
+#include "gdkx.h"
+#include <gdk/gdkpixmap.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+static guint theme_serial = 0;
+
+/* cursor_cache holds a cache of non-pixmap cursors to avoid expensive
+ * libXcursor searches, cursors are added to it but only removed when
+ * their display is closed. We make the assumption that since there are
+ * a small number of display's and a small number of cursor's that this
+ * list will stay small enough not to be a problem.
+ */
+static GSList* cursor_cache = NULL;
+
+struct cursor_cache_key
+{
+ GdkDisplay* display;
+ GdkCursorType type;
+ const char* name;
+};
+
+/* Caller should check if there is already a match first.
+ * Cursor MUST be either a typed cursor or a pixmap with
+ * a non-NULL name.
+ */
+static void
+add_to_cache (GdkCursorPrivate* cursor)
+{
+ cursor_cache = g_slist_prepend (cursor_cache, cursor);
+
+ /* Take a ref so that if the caller frees it we still have it */
+ gdk_cursor_ref ((GdkCursor*) cursor);
+}
+
+/* Returns 0 on a match
+ */
+static gint
+cache_compare_func (gconstpointer listelem,
+ gconstpointer target)
+{
+ GdkCursorPrivate* cursor = (GdkCursorPrivate*)listelem;
+ struct cursor_cache_key* key = (struct cursor_cache_key*)target;
+
+ if ((cursor->cursor.type != key->type) ||
+ (cursor->display != key->display))
+ return 1; /* No match */
+
+ /* Elements marked as pixmap must be named cursors
+ * (since we don't store normal pixmap cursors
+ */
+ if (key->type == GDK_CURSOR_IS_PIXMAP)
+ return strcmp (key->name, cursor->name);
+
+ return 0; /* Match */
+}
+
+/* Returns the cursor if there is a match, NULL if not
+ * For named cursors type shall be GDK_CURSOR_IS_PIXMAP
+ * For unnamed, typed cursors, name shall be NULL
+ */
+static GdkCursorPrivate*
+find_in_cache (GdkDisplay *display,
+ GdkCursorType type,
+ const char *name)
+{
+ GSList* res;
+ struct cursor_cache_key key;
+
+ key.display = display;
+ key.type = type;
+ key.name = name;
+
+ res = g_slist_find_custom (cursor_cache, &key, cache_compare_func);
+
+ if (res)
+ return (GdkCursorPrivate *) res->data;
+
+ return NULL;
+}
+
+/* Called by gdk_display_x11_finalize to flush any cached cursors
+ * for a dead display.
+ */
+void
+_gdk_x11_cursor_display_finalize (GdkDisplay *display)
+{
+ GSList* item;
+ GSList** itemp; /* Pointer to the thing to fix when we delete an item */
+ item = cursor_cache;
+ itemp = &cursor_cache;
+ while (item)
+ {
+ GdkCursorPrivate* cursor = (GdkCursorPrivate*)(item->data);
+ if (cursor->display == display)
+ {
+ GSList* olditem;
+ gdk_cursor_unref ((GdkCursor*) cursor);
+ /* Remove this item from the list */
+ *(itemp) = item->next;
+ olditem = item;
+ item = g_slist_next (item);
+ g_slist_free_1 (olditem);
+ }
+ else
+ {
+ itemp = &(item->next);
+ item = g_slist_next (item);
+ }
+ }
+}
+
+static Cursor
+get_blank_cursor (GdkDisplay *display)
+{
+ GdkScreen *screen;
+ GdkPixmap *pixmap;
+ Pixmap source_pixmap;
+ XColor color;
+ Cursor cursor;
+ cairo_t *cr;
+ screen = gdk_display_get_default_screen (display);
+ pixmap = gdk_pixmap_new (gdk_screen_get_root_window (screen), 1, 1, 1);
+ /* Clear Pixmap */
+ cr = gdk_cairo_create (pixmap);
+ cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
+ cairo_paint (cr);
+ cairo_destroy (cr);
+
+ source_pixmap = GDK_PIXMAP_XID (pixmap);
+
+ color.pixel = 0;
+ color.red = color.blue = color.green = 0;
+
+ if (display->closed)
+ cursor = None;
+ else
+ cursor = XCreatePixmapCursor (GDK_DISPLAY_XDISPLAY (display),
+ source_pixmap, source_pixmap,
+ &color, &color, 1, 1);
+ g_object_unref (pixmap);
+ return cursor;
+}
+
+/**
+ * gdk_cursor_new_for_display:
+ * @display: the #GdkDisplay for which the cursor will be created
+ * @cursor_type: cursor to create
+ *
+ * Creates a new cursor from the set of builtin cursors.
+ * Some useful ones are:
+ * <itemizedlist>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="right_ptr.png"></inlinegraphic> #GDK_RIGHT_PTR (right-facing arrow)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="crosshair.png"></inlinegraphic> #GDK_CROSSHAIR (crosshair)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="xterm.png"></inlinegraphic> #GDK_XTERM (I-beam)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="watch.png"></inlinegraphic> #GDK_WATCH (busy)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="fleur.png"></inlinegraphic> #GDK_FLEUR (for moving objects)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="hand1.png"></inlinegraphic> #GDK_HAND1 (a right-pointing hand)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="hand2.png"></inlinegraphic> #GDK_HAND2 (a left-pointing hand)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="left_side.png"></inlinegraphic> #GDK_LEFT_SIDE (resize left side)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="right_side.png"></inlinegraphic> #GDK_RIGHT_SIDE (resize right side)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="top_left_corner.png"></inlinegraphic> #GDK_TOP_LEFT_CORNER (resize northwest corner)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="top_right_corner.png"></inlinegraphic> #GDK_TOP_RIGHT_CORNER (resize northeast corner)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="bottom_left_corner.png"></inlinegraphic> #GDK_BOTTOM_LEFT_CORNER (resize southwest corner)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="bottom_right_corner.png"></inlinegraphic> #GDK_BOTTOM_RIGHT_CORNER (resize southeast corner)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="top_side.png"></inlinegraphic> #GDK_TOP_SIDE (resize top side)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="bottom_side.png"></inlinegraphic> #GDK_BOTTOM_SIDE (resize bottom side)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="sb_h_double_arrow.png"></inlinegraphic> #GDK_SB_H_DOUBLE_ARROW (move vertical splitter)
+ * </para></listitem>
+ * <listitem><para>
+ * <inlinegraphic format="PNG" fileref="sb_v_double_arrow.png"></inlinegraphic> #GDK_SB_V_DOUBLE_ARROW (move horizontal splitter)
+ * </para></listitem>
+ * <listitem><para>
+ * #GDK_BLANK_CURSOR (Blank cursor). Since 2.16
+ * </para></listitem>
+ * </itemizedlist>
+ *
+ * Return value: a new #GdkCursor
+ *
+ * Since: 2.2
+ **/
GdkCursor*
-gdk_cursor_new (GdkCursorType cursor_type)
+gdk_cursor_new_for_display (GdkDisplay *display,
+ GdkCursorType cursor_type)
{
GdkCursorPrivate *private;
GdkCursor *cursor;
Cursor xcursor;
- xcursor = XCreateFontCursor (gdk_display, cursor_type);
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+
+ if (display->closed)
+ {
+ xcursor = None;
+ }
+ else
+ {
+ private = find_in_cache (display, cursor_type, NULL);
+
+ if (private)
+ {
+ /* Cache had it, add a ref for this user */
+ gdk_cursor_ref ((GdkCursor*) private);
+
+ return (GdkCursor*) private;
+ }
+ else
+ {
+ if (cursor_type != GDK_BLANK_CURSOR)
+ xcursor = XCreateFontCursor (GDK_DISPLAY_XDISPLAY (display),
+ cursor_type);
+ else
+ xcursor = get_blank_cursor (display);
+ }
+ }
+
private = g_new (GdkCursorPrivate, 1);
- private->xdisplay = gdk_display;
+ private->display = display;
private->xcursor = xcursor;
- cursor = (GdkCursor*) private;
+ private->name = NULL;
+ private->serial = theme_serial;
+
+ cursor = (GdkCursor *) private;
cursor->type = cursor_type;
+ cursor->ref_count = 1;
+
+ if (xcursor != None)
+ add_to_cache (private);
return cursor;
}
-GdkCursor*
-gdk_cursor_new_from_pixmap (GdkPixmap *source, GdkPixmap *mask, GdkColor *fg, GdkColor *bg, gint x, gint y)
+void
+_gdk_cursor_destroy (GdkCursor *cursor)
+{
+ GdkCursorPrivate *private;
+
+ g_return_if_fail (cursor != NULL);
+ g_return_if_fail (cursor->ref_count == 0);
+
+ private = (GdkCursorPrivate *) cursor;
+ if (!private->display->closed && private->xcursor)
+ XFreeCursor (GDK_DISPLAY_XDISPLAY (private->display), private->xcursor);
+
+ g_free (private->name);
+ g_free (private);
+}
+
+/**
+ * gdk_x11_cursor_get_xdisplay:
+ * @cursor: a #GdkCursor.
+ *
+ * Returns the display of a #GdkCursor.
+ *
+ * Return value: an Xlib <type>Display*</type>.
+ **/
+Display *
+gdk_x11_cursor_get_xdisplay (GdkCursor *cursor)
+{
+ g_return_val_if_fail (cursor != NULL, NULL);
+
+ return GDK_DISPLAY_XDISPLAY(((GdkCursorPrivate *)cursor)->display);
+}
+
+/**
+ * gdk_x11_cursor_get_xcursor:
+ * @cursor: a #GdkCursor.
+ *
+ * Returns the X cursor belonging to a #GdkCursor.
+ *
+ * Return value: an Xlib <type>Cursor</type>.
+ **/
+Cursor
+gdk_x11_cursor_get_xcursor (GdkCursor *cursor)
+{
+ g_return_val_if_fail (cursor != NULL, None);
+
+ return ((GdkCursorPrivate *)cursor)->xcursor;
+}
+
+/**
+ * gdk_cursor_get_display:
+ * @cursor: a #GdkCursor.
+ *
+ * Returns the display on which the #GdkCursor is defined.
+ *
+ * Returns: the #GdkDisplay associated to @cursor
+ *
+ * Since: 2.2
+ */
+
+GdkDisplay *
+gdk_cursor_get_display (GdkCursor *cursor)
+{
+ g_return_val_if_fail (cursor != NULL, NULL);
+
+ return ((GdkCursorPrivate *)cursor)->display;
+}
+
+#if defined(HAVE_XCURSOR) && defined(HAVE_XFIXES) && XFIXES_MAJOR >= 2
+
+/**
+ * gdk_cursor_get_image:
+ * @cursor: a #GdkCursor
+ *
+ * Returns a #GdkPixbuf with the image used to display the cursor.
+ *
+ * Note that depending on the capabilities of the windowing system and
+ * on the cursor, GDK may not be able to obtain the image data. In this
+ * case, %NULL is returned.
+ *
+ * Returns: a #GdkPixbuf representing @cursor, or %NULL
+ *
+ * Since: 2.8
+ */
+GdkPixbuf*
+gdk_cursor_get_image (GdkCursor *cursor)
+{
+ Display *xdisplay;
+ GdkCursorPrivate *private;
+ XcursorImages *images = NULL;
+ XcursorImage *image;
+ gint size;
+ gchar buf[32];
+ guchar *data, *p, tmp;
+ GdkPixbuf *pixbuf;
+ gchar *theme;
+
+ g_return_val_if_fail (cursor != NULL, NULL);
+
+ private = (GdkCursorPrivate *) cursor;
+
+ xdisplay = GDK_DISPLAY_XDISPLAY (private->display);
+
+ size = XcursorGetDefaultSize (xdisplay);
+ theme = XcursorGetTheme (xdisplay);
+
+ if (cursor->type == GDK_CURSOR_IS_PIXMAP)
+ {
+ if (private->name)
+ images = XcursorLibraryLoadImages (private->name, theme, size);
+ }
+ else
+ images = XcursorShapeLoadImages (cursor->type, theme, size);
+
+ if (!images)
+ return NULL;
+
+ image = images->images[0];
+
+ data = g_malloc (4 * image->width * image->height);
+ memcpy (data, image->pixels, 4 * image->width * image->height);
+
+ for (p = data; p < data + (4 * image->width * image->height); p += 4)
+ {
+ tmp = p[0];
+ p[0] = p[2];
+ p[2] = tmp;
+ }
+
+ pixbuf = gdk_pixbuf_new_from_data (data, GDK_COLORSPACE_RGB, TRUE,
+ 8, image->width, image->height,
+ 4 * image->width,
+ (GdkPixbufDestroyNotify)g_free, NULL);
+
+ if (private->name)
+ gdk_pixbuf_set_option (pixbuf, "name", private->name);
+ g_snprintf (buf, 32, "%d", image->xhot);
+ gdk_pixbuf_set_option (pixbuf, "x_hot", buf);
+ g_snprintf (buf, 32, "%d", image->yhot);
+ gdk_pixbuf_set_option (pixbuf, "y_hot", buf);
+
+ XcursorImagesDestroy (images);
+
+ return pixbuf;
+}
+
+void
+_gdk_x11_cursor_update_theme (GdkCursor *cursor)
{
+ Display *xdisplay;
GdkCursorPrivate *private;
+ Cursor new_cursor = None;
+ GdkDisplayX11 *display_x11;
+
+ private = (GdkCursorPrivate *) cursor;
+ xdisplay = GDK_DISPLAY_XDISPLAY (private->display);
+ display_x11 = GDK_DISPLAY_X11 (private->display);
+
+ if (!display_x11->have_xfixes)
+ return;
+
+ if (private->serial == theme_serial)
+ return;
+
+ private->serial = theme_serial;
+
+ if (private->xcursor != None)
+ {
+ if (cursor->type == GDK_BLANK_CURSOR)
+ return;
+
+ if (cursor->type == GDK_CURSOR_IS_PIXMAP)
+ {
+ if (private->name)
+ new_cursor = XcursorLibraryLoadCursor (xdisplay, private->name);
+ }
+ else
+ new_cursor = XcursorShapeLoadCursor (xdisplay, cursor->type);
+
+ if (new_cursor != None)
+ {
+ XFixesChangeCursor (xdisplay, new_cursor, private->xcursor);
+ private->xcursor = new_cursor;
+ }
+ }
+}
+
+static void
+update_cursor (gpointer data,
+ gpointer user_data)
+{
GdkCursor *cursor;
- Pixmap source_pixmap, mask_pixmap;
+
+ cursor = (GdkCursor*)(data);
+
+ if (!cursor)
+ return;
+
+ _gdk_x11_cursor_update_theme (cursor);
+}
+
+/**
+ * gdk_x11_display_set_cursor_theme:
+ * @display: a #GdkDisplay
+ * @theme: the name of the cursor theme to use, or %NULL to unset
+ * a previously set value
+ * @size: the cursor size to use, or 0 to keep the previous size
+ *
+ * Sets the cursor theme from which the images for cursor
+ * should be taken.
+ *
+ * If the windowing system supports it, existing cursors created
+ * with gdk_cursor_new(), gdk_cursor_new_for_display() and
+ * gdk_cursor_new_for_name() are updated to reflect the theme
+ * change. Custom cursors constructed with
+ * gdk_cursor_new_from_pixbuf() will have to be handled
+ * by the application (GTK+ applications can learn about
+ * cursor theme changes by listening for change notification
+ * for the corresponding #GtkSetting).
+ *
+ * Since: 2.8
+ */
+void
+gdk_x11_display_set_cursor_theme (GdkDisplay *display,
+ const gchar *theme,
+ const gint size)
+{
+ GdkDisplayX11 *display_x11;
+ Display *xdisplay;
+ gchar *old_theme;
+ gint old_size;
+
+ g_return_if_fail (GDK_IS_DISPLAY (display));
+
+ display_x11 = GDK_DISPLAY_X11 (display);
+ xdisplay = GDK_DISPLAY_XDISPLAY (display);
+
+ old_theme = XcursorGetTheme (xdisplay);
+ old_size = XcursorGetDefaultSize (xdisplay);
+
+ if (old_size == size &&
+ (old_theme == theme ||
+ (old_theme && theme && strcmp (old_theme, theme) == 0)))
+ return;
+
+ theme_serial++;
+
+ XcursorSetTheme (xdisplay, theme);
+ if (size > 0)
+ XcursorSetDefaultSize (xdisplay, size);
+
+ g_slist_foreach (cursor_cache, update_cursor, NULL);
+}
+
+#else
+
+GdkPixbuf*
+gdk_cursor_get_image (GdkCursor *cursor)
+{
+ g_return_val_if_fail (cursor != NULL, NULL);
+
+ return NULL;
+}
+
+void
+gdk_x11_display_set_cursor_theme (GdkDisplay *display,
+ const gchar *theme,
+ const gint size)
+{
+ g_return_if_fail (GDK_IS_DISPLAY (display));
+}
+
+void
+_gdk_x11_cursor_update_theme (GdkCursor *cursor)
+{
+ g_return_if_fail (cursor != NULL);
+}
+
+#endif
+
+#ifdef HAVE_XCURSOR
+
+static XcursorImage*
+create_cursor_image (GdkPixbuf *pixbuf,
+ gint x,
+ gint y)
+{
+ guint width, height;
+ XcursorImage *xcimage;
+ cairo_surface_t *surface;
+ cairo_t *cr;
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+
+ xcimage = XcursorImageCreate (width, height);
+
+ xcimage->xhot = x;
+ xcimage->yhot = y;
+
+ surface = cairo_image_surface_create_for_data ((guchar *) xcimage->pixels,
+ CAIRO_FORMAT_ARGB32,
+ width,
+ height,
+ width * 4);
+
+ cr = cairo_create (surface);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
+ cairo_paint (cr);
+ cairo_destroy (cr);
+
+ cairo_surface_destroy (surface);
+
+ return xcimage;
+}
+
+
+/**
+ * gdk_cursor_new_from_pixbuf:
+ * @display: the #GdkDisplay for which the cursor will be created
+ * @pixbuf: the #GdkPixbuf containing the cursor image
+ * @x: the horizontal offset of the 'hotspot' of the cursor.
+ * @y: the vertical offset of the 'hotspot' of the cursor.
+ *
+ * Creates a new cursor from a pixbuf.
+ *
+ * Not all GDK backends support RGBA cursors. If they are not
+ * supported, a monochrome approximation will be displayed.
+ * The functions gdk_display_supports_cursor_alpha() and
+ * gdk_display_supports_cursor_color() can be used to determine
+ * whether RGBA cursors are supported;
+ * gdk_display_get_default_cursor_size() and
+ * gdk_display_get_maximal_cursor_size() give information about
+ * cursor sizes.
+ *
+ * On the X backend, support for RGBA cursors requires a
+ * sufficently new version of the X Render extension.
+ *
+ * Returns: a new #GdkCursor.
+ *
+ * Since: 2.4
+ */
+GdkCursor *
+gdk_cursor_new_from_pixbuf (GdkDisplay *display,
+ GdkPixbuf *pixbuf,
+ gint x,
+ gint y)
+{
+ XcursorImage *xcimage;
Cursor xcursor;
- XColor xfg, xbg;
+ GdkCursorPrivate *private;
+ GdkCursor *cursor;
+
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+ g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
+ g_return_val_if_fail (0 <= x && x < gdk_pixbuf_get_width (pixbuf), NULL);
+ g_return_val_if_fail (0 <= y && y < gdk_pixbuf_get_height (pixbuf), NULL);
+
+ if (display->closed)
+ xcursor = None;
+ else
+ {
+ xcimage = create_cursor_image (pixbuf, x, y);
+ xcursor = XcursorImageLoadCursor (GDK_DISPLAY_XDISPLAY (display), xcimage);
+ XcursorImageDestroy (xcimage);
+ }
+
+ private = g_new (GdkCursorPrivate, 1);
+ private->display = display;
+ private->xcursor = xcursor;
+ private->name = NULL;
+ private->serial = theme_serial;
+
+ cursor = (GdkCursor *) private;
+ cursor->type = GDK_CURSOR_IS_PIXMAP;
+ cursor->ref_count = 1;
- source_pixmap = ((GdkPixmapPrivate *) source)->xwindow;
- mask_pixmap = ((GdkPixmapPrivate *) mask)->xwindow;
+ return cursor;
+}
+
+/**
+ * gdk_cursor_new_from_name:
+ * @display: the #GdkDisplay for which the cursor will be created
+ * @name: the name of the cursor
+ *
+ * Creates a new cursor by looking up @name in the current cursor
+ * theme.
+ *
+ * Returns: a new #GdkCursor, or %NULL if there is no cursor with
+ * the given name
+ *
+ * Since: 2.8
+ */
+GdkCursor*
+gdk_cursor_new_from_name (GdkDisplay *display,
+ const gchar *name)
+{
+ Cursor xcursor;
+ Display *xdisplay;
+ GdkCursorPrivate *private;
+ GdkCursor *cursor;
+
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+
+ if (display->closed)
+ xcursor = None;
+ else
+ {
+ private = find_in_cache (display, GDK_CURSOR_IS_PIXMAP, name);
+
+ if (private)
+ {
+ /* Cache had it, add a ref for this user */
+ gdk_cursor_ref ((GdkCursor*) private);
+
+ return (GdkCursor*) private;
+ }
+
+ xdisplay = GDK_DISPLAY_XDISPLAY (display);
+ xcursor = XcursorLibraryLoadCursor (xdisplay, name);
+ if (xcursor == None)
+ return NULL;
+ }
+
+ private = g_new (GdkCursorPrivate, 1);
+ private->display = display;
+ private->xcursor = xcursor;
+ private->name = g_strdup (name);
+ private->serial = theme_serial;
+
+ cursor = (GdkCursor *) private;
+ cursor->type = GDK_CURSOR_IS_PIXMAP;
+ cursor->ref_count = 1;
+ add_to_cache (private);
+
+ return cursor;
+}
+
+/**
+ * gdk_display_supports_cursor_alpha:
+ * @display: a #GdkDisplay
+ *
+ * Returns %TRUE if cursors can use an 8bit alpha channel
+ * on @display. Otherwise, cursors are restricted to bilevel
+ * alpha (i.e. a mask).
+ *
+ * Returns: whether cursors can have alpha channels.
+ *
+ * Since: 2.4
+ */
+gboolean
+gdk_display_supports_cursor_alpha (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
+
+ return XcursorSupportsARGB (GDK_DISPLAY_XDISPLAY (display));
+}
+
+/**
+ * gdk_display_supports_cursor_color:
+ * @display: a #GdkDisplay
+ *
+ * Returns %TRUE if multicolored cursors are supported
+ * on @display. Otherwise, cursors have only a forground
+ * and a background color.
+ *
+ * Returns: whether cursors can have multiple colors.
+ *
+ * Since: 2.4
+ */
+gboolean
+gdk_display_supports_cursor_color (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
+
+ return XcursorSupportsARGB (GDK_DISPLAY_XDISPLAY (display));
+}
+
+/**
+ * gdk_display_get_default_cursor_size:
+ * @display: a #GdkDisplay
+ *
+ * Returns the default size to use for cursors on @display.
+ *
+ * Returns: the default cursor size.
+ *
+ * Since: 2.4
+ */
+guint
+gdk_display_get_default_cursor_size (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
+
+ return XcursorGetDefaultSize (GDK_DISPLAY_XDISPLAY (display));
+}
+
+#else
+
+static GdkCursor*
+gdk_cursor_new_from_pixmap (GdkDisplay *display,
+ Pixmap source_pixmap,
+ Pixmap mask_pixmap,
+ const GdkColor *fg,
+ const GdkColor *bg,
+ gint x,
+ gint y)
+{
+ GdkCursorPrivate *private;
+ GdkCursor *cursor;
+ Cursor xcursor;
+ XColor xfg, xbg;
+
+ g_return_val_if_fail (fg != NULL, NULL);
+ g_return_val_if_fail (bg != NULL, NULL);
xfg.pixel = fg->pixel;
xfg.red = fg->red;
xbg.blue = bg->blue;
xbg.green = bg->green;
- xcursor = XCreatePixmapCursor (gdk_display, source_pixmap, mask_pixmap, &xfg, &xbg, x, y);
+ if (display->closed)
+ xcursor = None;
+ else
+ xcursor = XCreatePixmapCursor (GDK_DISPLAY_XDISPLAY (display),
+ source_pixmap, mask_pixmap, &xfg, &xbg, x, y);
private = g_new (GdkCursorPrivate, 1);
- private->xdisplay = gdk_display;
+ private->display = display;
private->xcursor = xcursor;
+ private->name = NULL;
+ private->serial = theme_serial;
+
cursor = (GdkCursor *) private;
cursor->type = GDK_CURSOR_IS_PIXMAP;
+ cursor->ref_count = 1;
+
+ return cursor;
+}
+
+GdkCursor *
+gdk_cursor_new_from_pixbuf (GdkDisplay *display,
+ GdkPixbuf *pixbuf,
+ gint x,
+ gint y)
+{
+ GdkCursor *cursor;
+ cairo_surface_t *pixmap, *mask;
+ guint width, height, n_channels, rowstride, data_stride, i, j;
+ guint8 *data, *mask_data, *pixels;
+ GdkColor fg = { 0, 0, 0, 0 };
+ GdkColor bg = { 0, 0xffff, 0xffff, 0xffff };
+ GdkScreen *screen;
+ cairo_surface_t *image;
+ cairo_t *cr;
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+ g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+
+ g_return_val_if_fail (0 <= x && x < width, NULL);
+ g_return_val_if_fail (0 <= y && y < height, NULL);
+
+ n_channels = gdk_pixbuf_get_n_channels (pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+ pixels = gdk_pixbuf_get_pixels (pixbuf);
+
+ data_stride = 4 * ((width + 31) / 32);
+ data = g_new0 (guint8, data_stride * height);
+ mask_data = g_new0 (guint8, data_stride * height);
+
+ for (j = 0; j < height; j++)
+ {
+ guint8 *src = pixels + j * rowstride;
+ guint8 *d = data + data_stride * j;
+ guint8 *md = mask_data + data_stride * j;
+
+ for (i = 0; i < width; i++)
+ {
+ if (src[1] < 0x80)
+ *d |= 1 << (i % 8);
+
+ if (n_channels == 3 || src[3] >= 0x80)
+ *md |= 1 << (i % 8);
+
+ src += n_channels;
+ if (i % 8 == 7)
+ {
+ d++;
+ md++;
+ }
+ }
+ }
+
+ screen = gdk_display_get_default_screen (display);
+
+ pixmap = _gdk_x11_window_create_bitmap_surface (gdk_screen_get_root_window (screen),
+ width, height);
+ cr = cairo_create (pixmap);
+ image = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_A1,
+ width, height, data_stride);
+ cairo_set_source_surface (cr, image, 0, 0);
+ cairo_surface_destroy (image);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint (cr);
+ cairo_destroy (cr);
+
+ mask = _gdk_x11_window_create_bitmap_surface (gdk_screen_get_root_window (screen),
+ width, height);
+ cr = cairo_create (mask);
+ image = cairo_image_surface_create_for_data (mask_data, CAIRO_FORMAT_A1,
+ width, height, data_stride);
+ cairo_set_source_surface (cr, image, 0, 0);
+ cairo_surface_destroy (image);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint (cr);
+ cairo_destroy (cr);
+
+ cursor = gdk_cursor_new_from_pixmap (display,
+ cairo_xlib_surface_get_drawable (pixmap),
+ cairo_xlib_surface_get_drawable (mask),
+ &fg, &bg,
+ x, y);
+
+ cairo_surface_destroy (pixmap);
+ cairo_surface_destroy (mask);
+
+ g_free (data);
+ g_free (mask_data);
+
return cursor;
}
-void
-gdk_cursor_destroy (GdkCursor *cursor)
+GdkCursor*
+gdk_cursor_new_from_name (GdkDisplay *display,
+ const gchar *name)
{
- GdkCursorPrivate *private;
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
- g_return_if_fail (cursor != NULL);
+ return NULL;
+}
- private = (GdkCursorPrivate *) cursor;
- XFreeCursor (private->xdisplay, private->xcursor);
+gboolean
+gdk_display_supports_cursor_alpha (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
- g_free (private);
+ return FALSE;
+}
+
+gboolean
+gdk_display_supports_cursor_color (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
+
+ return FALSE;
+}
+
+guint
+gdk_display_get_default_cursor_size (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
+
+ /* no idea, really */
+ return 20;
+}
+
+#endif
+
+
+/**
+ * gdk_display_get_maximal_cursor_size:
+ * @display: a #GdkDisplay
+ * @width: (out): the return location for the maximal cursor width
+ * @height: (out): the return location for the maximal cursor height
+ *
+ * Gets the maximal size to use for cursors on @display.
+ *
+ * Since: 2.4
+ */
+void
+gdk_display_get_maximal_cursor_size (GdkDisplay *display,
+ guint *width,
+ guint *height)
+{
+ GdkScreen *screen;
+ GdkWindow *window;
+
+ g_return_if_fail (GDK_IS_DISPLAY (display));
+
+ screen = gdk_display_get_default_screen (display);
+ window = gdk_screen_get_root_window (screen);
+ XQueryBestCursor (GDK_DISPLAY_XDISPLAY (display),
+ GDK_WINDOW_XWINDOW (window),
+ 128, 128, width, height);
}
projects / ~andy / gtk / blobdiff