384 lines
9.8 KiB
C
384 lines
9.8 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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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 <sys/mman.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 x, y, width, height, size;
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void *map;
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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, int *x, int *y)
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{
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GdkWaylandCursor *wayland_cursor = GDK_WAYLAND_CURSOR (cursor);
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*x = wayland_cursor->x;
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*y = wayland_cursor->y;
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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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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(GdkDisplayWayland *display, GdkPixbuf *pixbuf, int x, int y)
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{
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GdkWaylandCursor *cursor;
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struct wl_visual *visual;
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int stride, fd;
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char *filename;
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GError *error = NULL;
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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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fprintf(stderr, "g_file_open_tmp failed: %s\n", 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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fprintf(stderr, "ftruncate failed: %m\n");
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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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fprintf(stderr, "mmap failed: %m\n");
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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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visual = display->premultiplied_argb_visual;
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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, visual);
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close(fd);
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return GDK_CURSOR (cursor);
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}
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#define DATADIR "/usr/share/wayland"
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static const struct {
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GdkCursorType type;
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const char *filename;
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int hotspot_x, hotspot_y;
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} cursor_definitions[] = {
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{ GDK_BLANK_CURSOR, NULL, 0, 0 },
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{ GDK_HAND1, DATADIR "/hand1.png", 18, 11 },
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{ GDK_HAND2, DATADIR "/hand2.png", 14, 8 },
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{ GDK_LEFT_PTR, DATADIR "/left_ptr.png", 10, 5 },
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{ GDK_SB_H_DOUBLE_ARROW, DATADIR "/sb_h_double_arrow.png", 15, 15 },
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{ GDK_SB_V_DOUBLE_ARROW, DATADIR "/sb_v_double_arrow.png", 15, 15 },
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{ GDK_XTERM, DATADIR "/xterm.png", 15, 15 },
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{ GDK_BOTTOM_RIGHT_CORNER, DATADIR "/bottom_right_corner.png", 28, 28 }
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};
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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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GdkDisplayWayland *wayland_display;
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GdkPixbuf *pixbuf;
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GError *error = NULL;
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int i;
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for (i = 0; i < G_N_ELEMENTS (cursor_definitions); i++)
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{
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if (cursor_definitions[i].type == cursor_type)
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break;
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}
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if (i == G_N_ELEMENTS (cursor_definitions))
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{
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g_warning("unhandled cursor type %d, falling back to blank\n",
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cursor_type);
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i = 0;
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}
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wayland_display = GDK_DISPLAY_WAYLAND (display);
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if (!wayland_display->cursors)
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wayland_display->cursors =
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g_new0 (GdkCursor *, G_N_ELEMENTS(cursor_definitions));
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if (wayland_display->cursors[i])
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return g_object_ref (wayland_display->cursors[i]);
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GDK_NOTE (CURSOR,
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g_message ("creating new cursor for type %d, filename %s",
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cursor_type, cursor_definitions[i].filename));
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if (cursor_type != GDK_BLANK_CURSOR)
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pixbuf = gdk_pixbuf_new_from_file(cursor_definitions[i].filename, &error);
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else
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pixbuf = NULL;
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if (error != NULL)
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{
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GDK_NOTE (CURSOR,
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g_message ("failed to load %s: %s",
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cursor_definitions[i].filename, error->message));
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g_error_free(error);
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return NULL;
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}
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wayland_display->cursors[i] =
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create_cursor(wayland_display, pixbuf,
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cursor_definitions[i].hotspot_x,
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cursor_definitions[i].hotspot_y);
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if (pixbuf)
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g_object_unref (pixbuf);
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return g_object_ref (wayland_display->cursors[i]);
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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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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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return GDK_CURSOR (private);
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}
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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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/* FIXME: wayland settings? */
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*width = 64;
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*height = 64;
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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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