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Check for Xcursor.

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2003-07-01  Matthias Clasen  <maclas@gmx.de>

	* configure.in: Check for Xcursor.

	* gdk/x11/gdkcursor-x11.c:
	* gdk/gdkdisplay.h:
	* gdk/gdkcursor.h: RGBA cursor support based on Xcursor. New functions:
	gdk_cursor_new_from_pixbuf(), gdk_display_supports_cursor_alpha(),
	gdk_display_supports_cursor_color(), gdk_display_get_default_cursor_size() and
	gdk_display_get_maximal_cursor_size().  (#69436)
This commit is contained in:
Matthias Clasen 2003-06-30 22:30:54 +00:00 committed by Matthias Clasen
parent 33902a67f0
commit eb7135adb5
9 changed files with 378 additions and 0 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2003-07-01 Matthias Clasen <maclas@gmx.de>
* configure.in: Check for Xcursor.
* gdk/x11/gdkcursor-x11.c:
* gdk/gdkdisplay.h:
* gdk/gdkcursor.h: RGBA cursor support based on Xcursor. New functions:
gdk_cursor_new_from_pixbuf(), gdk_display_supports_cursor_alpha(),
gdk_display_supports_cursor_color(), gdk_display_get_default_cursor_size() and
gdk_display_get_maximal_cursor_size(). (#69436)
2003-06-30 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkdnd-win32.c (find_window_enum_proc): New function,

11
ChangeLog.pre-2-10
View File

@ -1,3 +1,14 @@
2003-07-01 Matthias Clasen <maclas@gmx.de>
* configure.in: Check for Xcursor.
* gdk/x11/gdkcursor-x11.c:
* gdk/gdkdisplay.h:
* gdk/gdkcursor.h: RGBA cursor support based on Xcursor. New functions:
gdk_cursor_new_from_pixbuf(), gdk_display_supports_cursor_alpha(),
gdk_display_supports_cursor_color(), gdk_display_get_default_cursor_size() and
gdk_display_get_maximal_cursor_size(). (#69436)
2003-06-30 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkdnd-win32.c (find_window_enum_proc): New function,

11
ChangeLog.pre-2-4
View File

@ -1,3 +1,14 @@
2003-07-01 Matthias Clasen <maclas@gmx.de>
* configure.in: Check for Xcursor.
* gdk/x11/gdkcursor-x11.c:
* gdk/gdkdisplay.h:
* gdk/gdkcursor.h: RGBA cursor support based on Xcursor. New functions:
gdk_cursor_new_from_pixbuf(), gdk_display_supports_cursor_alpha(),
gdk_display_supports_cursor_color(), gdk_display_get_default_cursor_size() and
gdk_display_get_maximal_cursor_size(). (#69436)
2003-06-30 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkdnd-win32.c (find_window_enum_proc): New function,

11
ChangeLog.pre-2-6
View File

@ -1,3 +1,14 @@
2003-07-01 Matthias Clasen <maclas@gmx.de>
* configure.in: Check for Xcursor.
* gdk/x11/gdkcursor-x11.c:
* gdk/gdkdisplay.h:
* gdk/gdkcursor.h: RGBA cursor support based on Xcursor. New functions:
gdk_cursor_new_from_pixbuf(), gdk_display_supports_cursor_alpha(),
gdk_display_supports_cursor_color(), gdk_display_get_default_cursor_size() and
gdk_display_get_maximal_cursor_size(). (#69436)
2003-06-30 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkdnd-win32.c (find_window_enum_proc): New function,

11
ChangeLog.pre-2-8
View File

@ -1,3 +1,14 @@
2003-07-01 Matthias Clasen <maclas@gmx.de>
* configure.in: Check for Xcursor.
* gdk/x11/gdkcursor-x11.c:
* gdk/gdkdisplay.h:
* gdk/gdkcursor.h: RGBA cursor support based on Xcursor. New functions:
gdk_cursor_new_from_pixbuf(), gdk_display_supports_cursor_alpha(),
gdk_display_supports_cursor_color(), gdk_display_get_default_cursor_size() and
gdk_display_get_maximal_cursor_size(). (#69436)
2003-06-30 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkdnd-win32.c (find_window_enum_proc): New function,

9
configure.in
View File

@ -1230,6 +1230,15 @@ if test "x$gdktarget" = "xx11"; then
:, [#include <X11/Xlib.h>])], : ,
$X_LIBS -lXrandr -lXrender -lX11 $X_EXTRA_LIBS)
# Checks for Xcursor library
have_xcursor=false
PKG_CHECK_MODULES(XCURSOR, xcursor, have_xcursor=true, :)
if $have_xcursor ; then
AC_DEFINE(HAVE_XCURSOR, 1, Have the Xcursor library)
GDK_EXTRA_LIBS="$XCURSOR_LIBS $GDK_EXTRA_LIBS";
fi
# Xshm checks
if test "x$enable_shm" = "xyes"; then

5
gdk/gdkcursor.h
View File

@ -2,6 +2,7 @@
#define __GDK_CURSOR_H__
#include <gdk/gdktypes.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#ifdef __cplusplus
extern "C" {
@ -116,6 +117,10 @@ GdkCursor* gdk_cursor_new_from_pixmap (GdkPixmap *source,
GdkColor *bg,
gint x,
gint y);
GdkCursor* gdk_cursor_new_from_pixbuf (GdkDisplay *display,
GdkPixbuf *pixbuf,
gint x,
gint y);
GdkDisplay* gdk_cursor_get_display (GdkCursor *cursor);
GdkCursor* gdk_cursor_ref (GdkCursor *cursor);
void gdk_cursor_unref (GdkCursor *cursor);

7
gdk/gdkdisplay.h
View File

@ -148,6 +148,13 @@ GdkDisplayPointerHooks *gdk_display_set_pointer_hooks (GdkDisplay
GdkDisplay *gdk_display_open_default_libgtk_only (void);
gboolean gdk_display_supports_cursor_alpha (GdkDisplay *display);
gboolean gdk_display_supports_cursor_color (GdkDisplay *display);
guint gdk_display_get_default_cursor_size (GdkDisplay *display);
void gdk_display_get_maximal_cursor_size (GdkDisplay *display,
guint *width,
guint *height);
G_END_DECLS
#endif /* __GDK_DISPLAY_H__ */

302
gdk/x11/gdkcursor-x11.c
View File

@ -24,14 +24,20 @@
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#ifdef HAVE_XCURSOR
#include <X11/Xcursor/Xcursor.h>
#endif
#include "gdkprivate-x11.h"
#include "gdkcursor.h"
#include "gdkpixmap-x11.h"
#include "gdkx.h"
#include <gdk/gdkpixmap.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
/**
* gdk_cursor_new_for_display:
@ -294,3 +300,299 @@ gdk_cursor_get_display (GdkCursor *cursor)
return ((GdkCursorPrivate *)cursor)->display;
}
#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;
guchar a;
gint i, j;
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;
for (j = 0; j < height; j++)
{
src = pixels + j * rowstride;
for (i = 0; i < width; i++)
{
if (n_channels == 3)
a = 0xff;
else
a = src[3];
*dest = (a << 24) | (src[0] << 16) | (src[1] << 8) | src[2];
src += n_channels;
dest++;
}
}
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;
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 == 0)
{
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;
}
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_default_cursor_size (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
/* 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
*
* Returns 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_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
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);
}