forked from AuroraMiddleware/gtk
4f6d535626
Use the enum information to generate the cursor name rather than using a lookup table. https://bugzilla.gnome.org/show_bug.cgi?id=693256
373 lines
9.7 KiB
C
373 lines
9.7 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#define GDK_PIXBUF_ENABLE_BACKEND
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#include <string.h>
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#include "gdkprivate-wayland.h"
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#include "gdkcursorprivate.h"
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#include "gdkdisplay-wayland.h"
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#include "gdkwayland.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <wayland-cursor.h>
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#define GDK_TYPE_WAYLAND_CURSOR (_gdk_wayland_cursor_get_type ())
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#define GDK_WAYLAND_CURSOR(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_WAYLAND_CURSOR, GdkWaylandCursor))
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#define GDK_WAYLAND_CURSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_WAYLAND_CURSOR, GdkWaylandCursorClass))
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#define GDK_IS_WAYLAND_CURSOR(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_WAYLAND_CURSOR))
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#define GDK_IS_WAYLAND_CURSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_WAYLAND_CURSOR))
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#define GDK_WAYLAND_CURSOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_WAYLAND_CURSOR, GdkWaylandCursorClass))
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typedef struct _GdkWaylandCursor GdkWaylandCursor;
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typedef struct _GdkWaylandCursorClass GdkWaylandCursorClass;
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struct _GdkWaylandCursor
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{
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GdkCursor cursor;
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gchar *name;
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guint serial;
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int hotspot_x, hotspot_y;
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int width, height;
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struct wl_buffer *buffer;
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};
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struct _GdkWaylandCursorClass
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{
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GdkCursorClass cursor_class;
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};
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G_DEFINE_TYPE (GdkWaylandCursor, _gdk_wayland_cursor, GDK_TYPE_CURSOR)
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static guint theme_serial = 0;
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static void
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gdk_wayland_cursor_finalize (GObject *object)
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{
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GdkWaylandCursor *cursor = GDK_WAYLAND_CURSOR (object);
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g_free (cursor->name);
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G_OBJECT_CLASS (_gdk_wayland_cursor_parent_class)->finalize (object);
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}
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static GdkPixbuf*
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gdk_wayland_cursor_get_image (GdkCursor *cursor)
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{
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return NULL;
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}
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struct wl_buffer *
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_gdk_wayland_cursor_get_buffer (GdkCursor *cursor,
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int *x,
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int *y,
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int *w,
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int *h)
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{
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GdkWaylandCursor *wayland_cursor = GDK_WAYLAND_CURSOR (cursor);
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*x = wayland_cursor->hotspot_x;
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*y = wayland_cursor->hotspot_y;
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*w = wayland_cursor->width;
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*h = wayland_cursor->height;
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return wayland_cursor->buffer;
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}
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static void
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_gdk_wayland_cursor_class_init (GdkWaylandCursorClass *wayland_cursor_class)
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{
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GdkCursorClass *cursor_class = GDK_CURSOR_CLASS (wayland_cursor_class);
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GObjectClass *object_class = G_OBJECT_CLASS (wayland_cursor_class);
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object_class->finalize = gdk_wayland_cursor_finalize;
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cursor_class->get_image = gdk_wayland_cursor_get_image;
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}
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static void
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_gdk_wayland_cursor_init (GdkWaylandCursor *cursor)
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{
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}
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/* Use to implement from_pixbuf below */
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#if 0
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static void
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set_pixbuf (GdkWaylandCursor *cursor, GdkPixbuf *pixbuf)
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{
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int stride, i, n_channels;
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unsigned char *pixels, *end, *argb_pixels, *s, *d;
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stride = gdk_pixbuf_get_rowstride(pixbuf);
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pixels = gdk_pixbuf_get_pixels(pixbuf);
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n_channels = gdk_pixbuf_get_n_channels(pixbuf);
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argb_pixels = cursor->map;
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#define MULT(_d,c,a,t) \
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do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
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if (n_channels == 4)
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{
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for (i = 0; i < cursor->height; i++)
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{
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s = pixels + i * stride;
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end = s + cursor->width * 4;
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d = argb_pixels + i * cursor->width * 4;
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while (s < end)
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{
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unsigned int t;
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MULT(d[0], s[2], s[3], t);
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MULT(d[1], s[1], s[3], t);
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MULT(d[2], s[0], s[3], t);
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d[3] = s[3];
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s += 4;
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d += 4;
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}
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}
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}
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else if (n_channels == 3)
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{
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for (i = 0; i < cursor->height; i++)
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{
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s = pixels + i * stride;
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end = s + cursor->width * 3;
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d = argb_pixels + i * cursor->width * 4;
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while (s < end)
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{
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d[0] = s[2];
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d[1] = s[1];
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d[2] = s[0];
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d[3] = 0xff;
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s += 3;
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d += 4;
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}
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}
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}
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}
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static GdkCursor *
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create_cursor(GdkWaylandDisplay *display, GdkPixbuf *pixbuf, int x, int y)
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{
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GdkWaylandCursor *cursor;
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int stride, fd;
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char *filename;
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GError *error = NULL;
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struct wl_shm_pool *pool;
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cursor = g_object_new (GDK_TYPE_WAYLAND_CURSOR,
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"cursor-type", GDK_CURSOR_IS_PIXMAP,
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"display", display,
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NULL);
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cursor->name = NULL;
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cursor->serial = theme_serial;
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cursor->x = x;
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cursor->y = y;
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if (pixbuf)
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{
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cursor->width = gdk_pixbuf_get_width (pixbuf);
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cursor->height = gdk_pixbuf_get_height (pixbuf);
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}
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else
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{
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cursor->width = 1;
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cursor->height = 1;
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}
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stride = cursor->width * 4;
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cursor->size = stride * cursor->height;
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fd = g_file_open_tmp("wayland-shm-XXXXXX", &filename, &error);
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if (fd < 0)
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{
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g_critical (G_STRLOC ": Error opening temporary file for buffer: %s",
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error->message);
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g_error_free (error);
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return NULL;
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}
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unlink (filename);
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g_free (filename);
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if (ftruncate(fd, cursor->size) < 0)
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{
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g_critical (G_STRLOC ": Error truncating file for buffer: %s",
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g_strerror (errno));
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close(fd);
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return NULL;
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}
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cursor->map = mmap(NULL, cursor->size,
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PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (cursor->map == MAP_FAILED)
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{
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g_critical (G_STRLOC ": Error mmap'ing file for buffer: %s",
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g_strerror (errno));
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close(fd);
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return NULL;
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}
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if (pixbuf)
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set_pixbuf (cursor, pixbuf);
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else
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memset (cursor->map, 0, 4);
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cursor->buffer = wl_shm_create_buffer(display->shm,
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fd,
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cursor->width,
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cursor->height,
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stride, WL_SHM_FORMAT_ARGB8888);
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close(fd);
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return GDK_CURSOR (cursor);
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}
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#endif
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GdkCursor *
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_gdk_wayland_display_get_cursor_for_type (GdkDisplay *display,
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GdkCursorType cursor_type)
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{
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GEnumClass *enum_class;
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GEnumValue *enum_value;
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gchar *cursor_name;
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GdkCursor *result;
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enum_class = g_type_class_ref (GDK_TYPE_CURSOR_TYPE);
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enum_value = g_enum_get_value (enum_class, cursor_type);
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cursor_name = g_strdup (enum_value->value_nick);
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g_strdelimit (cursor_name, "-", '_');
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g_type_class_unref (enum_class);
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result = _gdk_wayland_display_get_cursor_for_name (display, cursor_name);
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g_free (cursor_name);
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return result;
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}
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GdkCursor *
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_gdk_wayland_display_get_cursor_for_name (GdkDisplay *display,
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const gchar *name)
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{
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GdkWaylandCursor *private;
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GdkWaylandDisplay *wayland_display = GDK_WAYLAND_DISPLAY (display);
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struct wl_cursor *cursor;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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private = g_object_new (GDK_TYPE_WAYLAND_CURSOR,
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"cursor-type", GDK_CURSOR_IS_PIXMAP,
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"display", display,
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NULL);
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private->name = g_strdup (name);
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private->serial = theme_serial;
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/* Blank cursor case */
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if (!name || g_str_equal (name, "blank_cursor"))
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return GDK_CURSOR (private);
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cursor = wl_cursor_theme_get_cursor (wayland_display->cursor_theme,
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name);
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if (!cursor)
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{
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g_warning (G_STRLOC ": Unable to load %s from the cursor theme", name);
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g_object_unref (private);
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return NULL;
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}
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/* TODO: Do something clever so we can do animated cursors - move the
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* wl_pointer_set_cursor to a function here so that we can do the magic to
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* iterate through
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*/
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private->hotspot_x = cursor->images[0]->hotspot_x;
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private->hotspot_y = cursor->images[0]->hotspot_y;
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private->width = cursor->images[0]->width;
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private->height = cursor->images[0]->height;
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private->buffer = wl_cursor_image_get_buffer(cursor->images[0]);
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return GDK_CURSOR (private);
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}
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/* TODO: Needs implementing */
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GdkCursor *
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_gdk_wayland_display_get_cursor_for_pixbuf (GdkDisplay *display,
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GdkPixbuf *pixbuf,
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gint x,
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gint y)
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{
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GdkWaylandCursor *private;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
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g_return_val_if_fail (0 <= x && x < gdk_pixbuf_get_width (pixbuf), NULL);
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g_return_val_if_fail (0 <= y && y < gdk_pixbuf_get_height (pixbuf), NULL);
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private = g_object_new (GDK_TYPE_WAYLAND_CURSOR,
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"cursor-type", GDK_CURSOR_IS_PIXMAP,
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"display", display,
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NULL);
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private->name = NULL;
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private->serial = theme_serial;
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return GDK_CURSOR (private);
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}
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void
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_gdk_wayland_display_get_default_cursor_size (GdkDisplay *display,
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guint *width,
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guint *height)
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{
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*width = 32;
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*height = 32;
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}
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void
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_gdk_wayland_display_get_maximal_cursor_size (GdkDisplay *display,
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guint *width,
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guint *height)
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{
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*width = 256;
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*height = 256;
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}
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gboolean
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_gdk_wayland_display_supports_cursor_alpha (GdkDisplay *display)
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{
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return TRUE;
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}
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gboolean
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_gdk_wayland_display_supports_cursor_color (GdkDisplay *display)
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{
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return TRUE;
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}
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