forked from AuroraMiddleware/gtk
500 lines
15 KiB
C
500 lines
15 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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struct
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{
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int hotspot_x, hotspot_y;
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int width, height, scale;
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cairo_surface_t *cairo_surface;
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} surface;
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struct wl_cursor *wl_cursor;
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int scale;
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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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GType _gdk_wayland_cursor_get_type (void);
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G_DEFINE_TYPE (GdkWaylandCursor, _gdk_wayland_cursor, GDK_TYPE_CURSOR)
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void
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_gdk_wayland_display_init_cursors (GdkWaylandDisplay *display)
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{
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display->cursor_cache = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_object_unref);
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}
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void
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_gdk_wayland_display_finalize_cursors (GdkWaylandDisplay *display)
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{
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g_hash_table_destroy (display->cursor_cache);
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}
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static const struct {
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const gchar *css_name, *traditional_name;
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} name_map[] = {
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{ "default", "left_ptr" },
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{ "help", "left_ptr" },
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{ "context-menu", "left_ptr" },
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{ "pointer", "hand" },
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{ "progress", "left_ptr_watch" },
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{ "wait", "watch" },
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{ "cell", "crosshair" },
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{ "crosshair", "cross" },
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{ "text", "xterm" },
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{ "vertical-text","xterm" },
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{ "alias", "dnd-link" },
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{ "copy", "dnd-copy" },
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{ "move", "dnd-move" },
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{ "no-drop", "dnd-none" },
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{ "dnd-ask", "dnd-copy" }, /* not CSS, but we want to guarantee it anyway */
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{ "not-allowed", "crossed_circle" },
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{ "grab", "hand2" },
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{ "grabbing", "hand2" },
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{ "all-scroll", "left_ptr" },
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{ "col-resize", "h_double_arrow" },
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{ "row-resize", "v_double_arrow" },
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{ "n-resize", "top_side" },
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{ "e-resize", "right_side" },
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{ "s-resize", "bottom_side" },
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{ "w-resize", "left_side" },
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{ "ne-resize", "top_right_corner" },
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{ "nw-resize", "top_left_corner" },
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{ "se-resize", "bottom_right_corner" },
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{ "sw-resize", "bottom_left_corner" },
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{ "ew-resize", "h_double_arrow" },
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{ "ns-resize", "v_double_arrow" },
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{ "nesw-resize", "fd_double_arrow" },
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{ "nwse-resize", "bd_double_arrow" },
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{ "zoom-in", "left_ptr" },
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{ "zoom-out", "left_ptr" },
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{ NULL, NULL }
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};
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static const gchar *
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name_fallback (const gchar *name)
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{
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gint i;
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for (i = 0; name_map[i].css_name; i++)
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{
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if (g_str_equal (name_map[i].css_name, name))
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return name_map[i].traditional_name;
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}
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return NULL;
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}
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static gboolean
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_gdk_wayland_cursor_update (GdkWaylandDisplay *wayland_display,
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GdkWaylandCursor *cursor)
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{
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struct wl_cursor *c;
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struct wl_cursor_theme *theme;
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/* Do nothing if this is not a wl_cursor cursor. */
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if (cursor->name == NULL)
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return FALSE;
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theme = _gdk_wayland_display_get_scaled_cursor_theme (wayland_display,
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cursor->scale);
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c = wl_cursor_theme_get_cursor (theme, cursor->name);
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if (!c)
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{
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const char *fallback;
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fallback = name_fallback (cursor->name);
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if (fallback)
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{
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c = wl_cursor_theme_get_cursor (theme, name_fallback (cursor->name));
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if (!c)
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c = wl_cursor_theme_get_cursor (theme, "left_ptr");
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}
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}
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if (!c)
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{
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g_warning (G_STRLOC ": Unable to load %s from the cursor theme", cursor->name);
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return FALSE;
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}
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cursor->wl_cursor = c;
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return TRUE;
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}
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void
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_gdk_wayland_display_update_cursors (GdkWaylandDisplay *display)
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{
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GHashTableIter iter;
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const char *name;
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GdkWaylandCursor *cursor;
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g_hash_table_iter_init (&iter, display->cursor_cache);
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while (g_hash_table_iter_next (&iter, (gpointer *) &name, (gpointer *) &cursor))
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_gdk_wayland_cursor_update (display, cursor);
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}
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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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if (cursor->surface.cairo_surface)
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cairo_surface_destroy (cursor->surface.cairo_surface);
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G_OBJECT_CLASS (_gdk_wayland_cursor_parent_class)->finalize (object);
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}
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static cairo_surface_t *
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gdk_wayland_cursor_get_surface (GdkCursor *cursor,
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gdouble *x_hot,
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gdouble *y_hot)
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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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guint image_index,
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int *hotspot_x,
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int *hotspot_y,
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int *w,
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int *h,
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int *scale)
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{
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GdkWaylandCursor *wayland_cursor = GDK_WAYLAND_CURSOR (cursor);
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if (wayland_cursor->wl_cursor)
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{
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struct wl_cursor_image *image;
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if (image_index >= wayland_cursor->wl_cursor->image_count)
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{
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g_warning (G_STRLOC " out of bounds cursor image [%d / %d]",
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image_index,
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wayland_cursor->wl_cursor->image_count - 1);
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image_index = 0;
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}
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image = wayland_cursor->wl_cursor->images[image_index];
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*hotspot_x = image->hotspot_x / wayland_cursor->scale;
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*hotspot_y = image->hotspot_y / wayland_cursor->scale;
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*w = image->width / wayland_cursor->scale;
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*h = image->height / wayland_cursor->scale;
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*scale = wayland_cursor->scale;
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return wl_cursor_image_get_buffer (image);
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}
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else if (wayland_cursor->name == NULL) /* From surface */
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{
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*hotspot_x =
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wayland_cursor->surface.hotspot_x / wayland_cursor->surface.scale;
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*hotspot_y =
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wayland_cursor->surface.hotspot_y / wayland_cursor->surface.scale;
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*w = wayland_cursor->surface.width / wayland_cursor->surface.scale;
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*h = wayland_cursor->surface.height / wayland_cursor->surface.scale;
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*scale = wayland_cursor->surface.scale;
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cairo_surface_reference (wayland_cursor->surface.cairo_surface);
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if (wayland_cursor->surface.cairo_surface)
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return _gdk_wayland_shm_surface_get_wl_buffer (wayland_cursor->surface.cairo_surface);
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}
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return NULL;
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}
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guint
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_gdk_wayland_cursor_get_next_image_index (GdkCursor *cursor,
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guint current_image_index,
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guint *next_image_delay)
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{
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struct wl_cursor *wl_cursor = GDK_WAYLAND_CURSOR (cursor)->wl_cursor;
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if (wl_cursor && wl_cursor->image_count > 1)
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{
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if (current_image_index >= wl_cursor->image_count)
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{
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g_warning (G_STRLOC " out of bounds cursor image [%d / %d]",
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current_image_index, wl_cursor->image_count - 1);
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current_image_index = 0;
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}
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/* Return the time to next image */
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if (next_image_delay)
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*next_image_delay = wl_cursor->images[current_image_index]->delay;
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return (current_image_index + 1) % wl_cursor->image_count;
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}
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else
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return current_image_index;
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}
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void
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_gdk_wayland_cursor_set_scale (GdkCursor *cursor,
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guint scale)
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{
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GdkWaylandDisplay *wayland_display =
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GDK_WAYLAND_DISPLAY (gdk_cursor_get_display (cursor));
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GdkWaylandCursor *wayland_cursor = GDK_WAYLAND_CURSOR (cursor);
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if (scale > GDK_WAYLAND_MAX_THEME_SCALE)
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{
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g_warning (G_STRLOC ": cursor theme size %u too large", scale);
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scale = GDK_WAYLAND_MAX_THEME_SCALE;
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}
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if (wayland_cursor->scale == scale)
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return;
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wayland_cursor->scale = scale;
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_gdk_wayland_cursor_update (wayland_display, wayland_cursor);
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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_surface = gdk_wayland_cursor_get_surface;
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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 GdkCursor *
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_gdk_wayland_display_get_cursor_for_name_with_scale (GdkDisplay *display,
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const gchar *name,
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guint scale)
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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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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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private = g_hash_table_lookup (wayland_display->cursor_cache, name);
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if (private)
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return GDK_CURSOR (g_object_ref (private));
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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->scale = scale;
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/* Blank cursor case */
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if (!name || g_str_equal (name, "none") || g_str_equal (name, "blank_cursor"))
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return GDK_CURSOR (private);
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if (!_gdk_wayland_cursor_update (wayland_display, private))
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return GDK_CURSOR (private);
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/* Insert into cache. */
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g_hash_table_insert (wayland_display->cursor_cache, private->name, g_object_ref (private));
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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_name (GdkDisplay *display,
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const gchar *name)
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{
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return _gdk_wayland_display_get_cursor_for_name_with_scale (display, name, 1);
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}
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GdkCursor *
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_gdk_wayland_display_get_cursor_for_type_with_scale (GdkDisplay *display,
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GdkCursorType cursor_type,
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guint scale)
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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_with_scale (display,
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cursor_name,
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scale);
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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_type (GdkDisplay *display,
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GdkCursorType cursor_type)
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{
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return _gdk_wayland_display_get_cursor_for_type_with_scale (display,
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cursor_type,
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1);
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}
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static void
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buffer_release_callback (void *_data,
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struct wl_buffer *wl_buffer)
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{
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cairo_surface_t *cairo_surface = _data;
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cairo_surface_destroy (cairo_surface);
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}
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static const struct wl_buffer_listener buffer_listener = {
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buffer_release_callback
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};
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GdkCursor *
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_gdk_wayland_display_get_cursor_for_surface (GdkDisplay *display,
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cairo_surface_t *surface,
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gdouble x,
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gdouble y)
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{
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GdkWaylandCursor *cursor;
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GdkWaylandDisplay *wayland_display = GDK_WAYLAND_DISPLAY (display);
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struct wl_buffer *buffer;
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cairo_t *cr;
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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", wayland_display,
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NULL);
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cursor->name = NULL;
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cursor->surface.hotspot_x = x;
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cursor->surface.hotspot_y = y;
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cursor->surface.scale = 1;
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if (surface)
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{
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double sx, sy;
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cairo_surface_get_device_scale (surface, &sx, &sy);
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cursor->surface.scale = (int)sx;
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cursor->surface.width = cairo_image_surface_get_width (surface);
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cursor->surface.height = cairo_image_surface_get_height (surface);
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}
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else
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{
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cursor->surface.width = 1;
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cursor->surface.height = 1;
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}
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cursor->surface.cairo_surface = _gdk_wayland_display_create_shm_surface (wayland_display,
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cursor->surface.width,
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cursor->surface.height,
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cursor->surface.scale);
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buffer = _gdk_wayland_shm_surface_get_wl_buffer (cursor->surface.cairo_surface);
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wl_buffer_add_listener (buffer, &buffer_listener, cursor->surface.cairo_surface);
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if (surface)
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{
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cr = cairo_create (cursor->surface.cairo_surface);
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cairo_set_source_surface (cr, surface, 0, 0);
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cairo_paint (cr);
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cairo_destroy (cr);
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}
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return GDK_CURSOR (cursor);
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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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