* 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
+ * 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 1997-1999. 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 <config.h>
+
+#define GDK_PIXBUF_ENABLE_BACKEND
+
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
+#ifdef HAVE_XCURSOR
+#include <X11/Xcursor/Xcursor.h>
+#endif
+#ifdef HAVE_XFIXES
+#include <X11/extensions/Xfixes.h>
+#endif
+#include <string.h>
-#include "gdkx.h"
+#include "gdkprivate-x11.h"
#include "gdkcursor.h"
+#include "gdkpixmap-x11.h"
+#include "gdkx.h"
+#include <gdk/gdkpixmap.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include "gdkalias.h"
+
+/**
+ * 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>
+ * </itemizedlist>
+ *
+ * To make the cursor invisible, use gdk_cursor_new_from_pixmap() to create
+ * a cursor with no pixels in it.
+ *
+ * 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
+ xcursor = XCreateFontCursor (GDK_DISPLAY_XDISPLAY (display), cursor_type);
+
private = g_new (GdkCursorPrivate, 1);
- private->xdisplay = gdk_display;
+ private->display = display;
private->xcursor = xcursor;
- cursor = (GdkCursor*) private;
+ private->name = NULL;
+ cursor = (GdkCursor *) private;
cursor->type = cursor_type;
-
+ cursor->ref_count = 1;
+
return cursor;
}
+/**
+ * gdk_cursor_new_from_pixmap:
+ * @source: the pixmap specifying the cursor.
+ * @mask: the pixmap specifying the mask, which must be the same size as
+ * @source.
+ * @fg: the foreground color, used for the bits in the source which are 1.
+ * The color does not have to be allocated first.
+ * @bg: the background color, used for the bits in the source which are 0.
+ * The color does not have to be allocated first.
+ * @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 given pixmap and mask. Both the pixmap and mask
+ * must have a depth of 1 (i.e. each pixel has only 2 values - on or off).
+ * The standard cursor size is 16 by 16 pixels. You can create a bitmap
+ * from inline data as in the below example.
+ *
+ * <example><title>Creating a custom cursor</title>
+ * <programlisting>
+ * /<!-- -->* This data is in X bitmap format, and can be created with the 'bitmap'
+ * utility. *<!-- -->/
+ * #define cursor1_width 16
+ * #define cursor1_height 16
+ * static unsigned char cursor1_bits[] = {
+ * 0x80, 0x01, 0x40, 0x02, 0x20, 0x04, 0x10, 0x08, 0x08, 0x10, 0x04, 0x20,
+ * 0x82, 0x41, 0x41, 0x82, 0x41, 0x82, 0x82, 0x41, 0x04, 0x20, 0x08, 0x10,
+ * 0x10, 0x08, 0x20, 0x04, 0x40, 0x02, 0x80, 0x01};
+ *
+ * static unsigned char cursor1mask_bits[] = {
+ * 0x80, 0x01, 0xc0, 0x03, 0x60, 0x06, 0x30, 0x0c, 0x18, 0x18, 0x8c, 0x31,
+ * 0xc6, 0x63, 0x63, 0xc6, 0x63, 0xc6, 0xc6, 0x63, 0x8c, 0x31, 0x18, 0x18,
+ * 0x30, 0x0c, 0x60, 0x06, 0xc0, 0x03, 0x80, 0x01};
+ *
+ *
+ * GdkCursor *cursor;
+ * GdkPixmap *source, *mask;
+ * GdkColor fg = { 0, 65535, 0, 0 }; /<!-- -->* Red. *<!-- -->/
+ * GdkColor bg = { 0, 0, 0, 65535 }; /<!-- -->* Blue. *<!-- -->/
+ *
+ *
+ * source = gdk_bitmap_create_from_data (NULL, cursor1_bits,
+ * cursor1_width, cursor1_height);
+ * mask = gdk_bitmap_create_from_data (NULL, cursor1mask_bits,
+ * cursor1_width, cursor1_height);
+ * cursor = gdk_cursor_new_from_pixmap (source, mask, &fg, &bg, 8, 8);
+ * gdk_pixmap_unref (source);
+ * gdk_pixmap_unref (mask);
+ *
+ *
+ * gdk_window_set_cursor (widget->window, cursor);
+ * </programlisting>
+ * </example>
+ *
+ * Return value: a new #GdkCursor.
+ **/
GdkCursor*
-gdk_cursor_new_from_pixmap (GdkPixmap *source, GdkPixmap *mask, GdkColor *fg, GdkColor *bg, gint x, gint y)
+gdk_cursor_new_from_pixmap (GdkPixmap *source,
+ GdkPixmap *mask,
+ const GdkColor *fg,
+ const GdkColor *bg,
+ gint x,
+ gint y)
{
GdkCursorPrivate *private;
GdkCursor *cursor;
Pixmap source_pixmap, mask_pixmap;
Cursor xcursor;
XColor xfg, xbg;
-
- source_pixmap = GDK_DRAWABLE_XID (source);
- mask_pixmap = GDK_DRAWABLE_XID (mask);
+ GdkDisplay *display;
+
+ g_return_val_if_fail (GDK_IS_PIXMAP (source), NULL);
+ g_return_val_if_fail (GDK_IS_PIXMAP (mask), NULL);
+ g_return_val_if_fail (fg != NULL, NULL);
+ g_return_val_if_fail (bg != NULL, NULL);
+
+ source_pixmap = GDK_PIXMAP_XID (source);
+ mask_pixmap = GDK_PIXMAP_XID (mask);
+ display = GDK_PIXMAP_DISPLAY (source);
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;
cursor = (GdkCursor *) private;
cursor->type = GDK_CURSOR_IS_PIXMAP;
-
+ cursor->ref_count = 1;
+
return cursor;
}
void
-gdk_cursor_destroy (GdkCursor *cursor)
+_gdk_cursor_destroy (GdkCursor *cursor)
{
GdkCursorPrivate *private;
g_return_if_fail (cursor != NULL);
+ g_return_if_fail (cursor->ref_count == 0);
private = (GdkCursorPrivate *) cursor;
- XFreeCursor (private->xdisplay, private->xcursor);
+ 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;
+}
+
+static void
+update_cursor (gpointer key,
+ gpointer value,
+ gpointer data)
+{
+ Display *xdisplay;
+ GdkWindow *window;
+ GdkCursor *cursor;
+ GdkCursorPrivate *private;
+ Cursor new_cursor = None;
+
+ if (!GDK_IS_WINDOW (value))
+ return;
+
+ cursor = _gdk_x11_window_get_cursor (GDK_WINDOW (value));
+
+ if (!cursor)
+ return;
+
+ private = (GdkCursorPrivate *) cursor;
+ xdisplay = (Display *)data;
+
+ if (private->xcursor != None)
+ {
+ 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);
+ }
+}
+
+/**
+ * gdk_x11_display_set_cursor_theme:
+ * @display: a #GdkDisplay
+ * @theme: the name of the cursor theme to use
+ * @size: the cursor size to use
+ *
+ * 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_pixmap()
+ * or 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 && strcmp (old_theme, theme) == 0)
+ return;
+
+ XcursorSetTheme (xdisplay, theme);
+ XcursorSetDefaultSize (xdisplay, size);
+
+ g_hash_table_foreach (display_x11->xid_ht,
+ update_cursor, xdisplay);
+}
+
+#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));
+
+ /* nothing to do */
+}
+
+#endif
+
+#ifdef HAVE_XCURSOR
+
+static XcursorImage*
+create_cursor_image (GdkPixbuf *pixbuf,
+ gint x,
+ gint y)
+{
+ guint width, height, rowstride, n_channels;
+ guchar *pixels, *src;
+ XcursorImage *xcimage;
+ XcursorPixel *dest;
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+
+ n_channels = gdk_pixbuf_get_n_channels (pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+ pixels = gdk_pixbuf_get_pixels (pixbuf);
+
+ xcimage = XcursorImageCreate (width, height);
+
+ xcimage->xhot = x;
+ xcimage->yhot = y;
+
+ dest = xcimage->pixels;
+
+ if (n_channels == 3)
+ {
+ gint i, j;
+
+ for (j = 0; j < height; j++)
+ {
+ src = pixels + j * rowstride;
+ for (i = 0; i < width; i++)
+ {
+ *dest = (0xff << 24) | (src[0] << 16) | (src[1] << 8) | src[2];
+ }
+
+ src += n_channels;
+ dest++;
+ }
+ }
+ else
+ {
+ _gdk_x11_convert_to_format (pixels, rowstride,
+ (guchar *) dest, 4 * width,
+ GDK_X11_FORMAT_ARGB,
+ (G_BYTE_ORDER == G_BIG_ENDIAN) ?
+ GDK_MSB_FIRST : GDK_LSB_FIRST,
+ width, height);
+ }
+
+ 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;
+ 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;
+ cursor = (GdkCursor *) private;
+ cursor->type = GDK_CURSOR_IS_PIXMAP;
+ cursor->ref_count = 1;
+
+ 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
+ {
+ 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);
+ cursor = (GdkCursor *) private;
+ cursor->type = GDK_CURSOR_IS_PIXMAP;
+ cursor->ref_count = 1;
+
+ 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
+
+GdkCursor *
+gdk_cursor_new_from_pixbuf (GdkDisplay *display,
+ GdkPixbuf *pixbuf,
+ gint x,
+ gint y)
+{
+ GdkCursor *cursor;
+ GdkPixmap *pixmap, *mask;
+ guint width, height, n_channels, rowstride, i, j;
+ guint8 *data, *mask_data, *pixels;
+ GdkColor fg = { 0, 0, 0, 0 };
+ GdkColor bg = { 0, 0xffff, 0xffff, 0xffff };
+ GdkScreen *screen;
+
+ 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 = g_new0 (guint8, (width + 7) / 8 * height);
+ mask_data = g_new0 (guint8, (width + 7) / 8 * height);
+
+ for (j = 0; j < height; j++)
+ {
+ guint8 *src = pixels + j * rowstride;
+ guint8 *d = data + (width + 7) / 8 * j;
+ guint8 *md = mask_data + (width + 7) / 8 * 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_bitmap_create_from_data (gdk_screen_get_root_window (screen),
+ data, width, height);
+
+ mask = gdk_bitmap_create_from_data (gdk_screen_get_root_window (screen),
+ mask_data, width, height);
+
+ cursor = gdk_cursor_new_from_pixmap (pixmap, mask, &fg, &bg, x, y);
+
+ g_object_unref (pixmap);
+ g_object_unref (mask);
+
+ g_free (data);
+ g_free (mask_data);
+
+ return cursor;
+}
+
+GdkCursor*
+gdk_cursor_new_from_name (GdkDisplay *display,
+ const gchar *name)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+
+ return NULL;
+}
+
+gboolean
+gdk_display_supports_cursor_alpha (GdkDisplay *display)
+{
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
+
+ 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: the return location for the maximal cursor width
+ * @height: 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);
+}
+
+#define __GDK_CURSOR_X11_C__
+#include "gdkaliasdef.c"
projects / ~andy / gtk / blobdiff