forked from AuroraMiddleware/gtk
367 lines
10 KiB
C
367 lines
10 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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};
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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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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 gboolean
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set_cursor_from_theme (GdkWaylandCursor *cursor, struct wl_cursor_theme *theme)
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{
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struct wl_cursor *c;
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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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g_warning (G_STRLOC ": Unable to load %s from the cursor theme", cursor->name);
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/* return the left_ptr cursor as a fallback */
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c = wl_cursor_theme_get_cursor (theme, "left_ptr");
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if (!c)
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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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struct wl_cursor_theme *theme)
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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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set_cursor_from_theme (cursor, theme);
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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;
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*hotspot_y = image->hotspot_y;
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*w = image->width;
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*h = image->height;
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*scale = 1;
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return wl_cursor_image_get_buffer (image);
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}
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else /* From surface */
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{
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*hotspot_x = wayland_cursor->surface.hotspot_x;
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*hotspot_y = wayland_cursor->surface.hotspot_y;
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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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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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else
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return NULL;
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}
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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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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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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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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->surface.scale = 1;
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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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if (!set_cursor_from_theme (private, wayland_display->cursor_theme))
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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_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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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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#ifdef HAVE_CAIRO_SURFACE_SET_DEVICE_SCALE
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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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}
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#endif
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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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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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