AuroraMiddleware/gtk
1
0
Fork 1
mirror of https://gitlab.gnome.org/GNOME/gtk.git synced 2024-11-10 10:50:10 +00:00
Code Issues Projects Releases Wiki Activity
d3cecd65a5
gtk/gdk/wayland/gdkcursor-wayland.c
Matthias Clasen 77bab4e027 gdk: Drop some unused cursor apis 
The query function for cursor sizes and capabilities
are not very interesting. At least, they are not used
in GTK+, and all backends but X11 just hardcode
made-up values anyway. So, lets drop them.
2018-01-16 23:32:01 -05:00

307 lines
9.9 KiB
C
Raw Blame History

/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#define GDK_PIXBUF_ENABLE_BACKEND
#include <string.h>
#include "gdkprivate-wayland.h"
#include "gdkcursorprivate.h"
#include "gdkdisplay-wayland.h"
#include "gdkwayland.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <wayland-cursor.h>
static void
gdk_wayland_cursor_remove_from_cache (gpointer data, GObject *cursor)
{
GdkWaylandDisplay *display = data;
g_hash_table_remove (display->cursor_surface_cache, cursor);
}
void
_gdk_wayland_display_init_cursors (GdkWaylandDisplay *display)
{
display->cursor_surface_cache = g_hash_table_new_full (gdk_cursor_hash, gdk_cursor_equal, NULL, (GDestroyNotify) cairo_surface_destroy);
}
void
_gdk_wayland_display_finalize_cursors (GdkWaylandDisplay *display)
{
GHashTableIter iter;
gpointer cursor;
g_hash_table_iter_init (&iter, display->cursor_surface_cache);
while (g_hash_table_iter_next (&iter, &cursor, NULL))
g_object_weak_unref (G_OBJECT (cursor), gdk_wayland_cursor_remove_from_cache, display);
g_hash_table_destroy (display->cursor_surface_cache);
}
static const struct {
const gchar *css_name, *traditional_name;
} name_map[] = {
{ "default", "left_ptr" },
{ "help", "question_arrow" },
{ "context-menu", "left_ptr" },
{ "pointer", "hand" },
{ "progress", "left_ptr_watch" },
{ "wait", "watch" },
{ "cell", "crosshair" },
{ "crosshair", "cross" },
{ "text", "xterm" },
{ "vertical-text","xterm" },
{ "alias", "dnd-link" },
{ "copy", "dnd-copy" },
{ "move", "dnd-move" },
{ "no-drop", "dnd-none" },
{ "dnd-ask", "dnd-copy" }, /* not CSS, but we want to guarantee it anyway */
{ "not-allowed", "crossed_circle" },
{ "grab", "hand2" },
{ "grabbing", "hand2" },
{ "all-scroll", "left_ptr" },
{ "col-resize", "h_double_arrow" },
{ "row-resize", "v_double_arrow" },
{ "n-resize", "top_side" },
{ "e-resize", "right_side" },
{ "s-resize", "bottom_side" },
{ "w-resize", "left_side" },
{ "ne-resize", "top_right_corner" },
{ "nw-resize", "top_left_corner" },
{ "se-resize", "bottom_right_corner" },
{ "sw-resize", "bottom_left_corner" },
{ "ew-resize", "h_double_arrow" },
{ "ns-resize", "v_double_arrow" },
{ "nesw-resize", "fd_double_arrow" },
{ "nwse-resize", "bd_double_arrow" },
{ "zoom-in", "left_ptr" },
{ "zoom-out", "left_ptr" }
};
static const gchar *
name_fallback (const gchar *name)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (name_map); i++)
{
if (g_str_equal (name_map[i].css_name, name))
return name_map[i].traditional_name;
}
return NULL;
}
static struct wl_cursor *
gdk_wayland_cursor_load_for_name (GdkWaylandDisplay *display_wayland,
struct wl_cursor_theme *theme,
const char *name)
{
struct wl_cursor *c;
c = wl_cursor_theme_get_cursor (theme, name);
if (!c)
{
const char *fallback;
fallback = name_fallback (name);
if (fallback)
{
c = wl_cursor_theme_get_cursor (theme, fallback);
}
}
return c;
}
static void
buffer_release_callback (void *_data,
struct wl_buffer *wl_buffer)
{
cairo_surface_t *cairo_surface = _data;
cairo_surface_destroy (cairo_surface);
}
static const struct wl_buffer_listener buffer_listener = {
buffer_release_callback
};
struct wl_buffer *
_gdk_wayland_cursor_get_buffer (GdkWaylandDisplay *display,
GdkCursor *cursor,
guint desired_scale,
guint image_index,
int *hotspot_x,
int *hotspot_y,
int *width,
int *height,
int *scale)
{
desired_scale = MIN (desired_scale, GDK_WAYLAND_MAX_THEME_SCALE);
if (gdk_cursor_get_name (cursor))
{
struct wl_cursor *c;
if (g_str_equal (gdk_cursor_get_name (cursor), "none"))
{
*hotspot_x = 0;
*hotspot_y = 0;
*width = 0;
*height = 0;
*scale = 1;
return NULL;
}
c = gdk_wayland_cursor_load_for_name (display,
_gdk_wayland_display_get_scaled_cursor_theme (display, desired_scale),
gdk_cursor_get_name (cursor));
if (c)
{
struct wl_cursor_image *image;
if (image_index >= c->image_count)
{
g_warning (G_STRLOC " out of bounds cursor image [%d / %d]",
image_index,
c->image_count - 1);
image_index = 0;
}
image = c->images[image_index];
*hotspot_x = image->hotspot_x / desired_scale;
*hotspot_y = image->hotspot_y / desired_scale;
*width = image->width / desired_scale;
*height = image->height / desired_scale;
*scale = desired_scale;
return wl_cursor_image_get_buffer (image);
}
}
else
{
GdkTexture *texture = gdk_cursor_get_texture (cursor);
cairo_surface_t *surface;
struct wl_buffer *buffer;
surface = g_hash_table_lookup (display->cursor_surface_cache, cursor);
if (surface == NULL)
{
surface = _gdk_wayland_display_create_shm_surface (display,
gdk_texture_get_width (texture),
gdk_texture_get_height (texture),
1);
gdk_texture_download (texture,
cairo_image_surface_get_data (surface),
cairo_image_surface_get_stride (surface));
cairo_surface_mark_dirty (surface);
g_object_weak_ref (G_OBJECT (cursor), gdk_wayland_cursor_remove_from_cache, display);
g_hash_table_insert (display->cursor_surface_cache, cursor, surface);
}
*hotspot_x = gdk_cursor_get_hotspot_x (cursor);
*hotspot_y = gdk_cursor_get_hotspot_y (cursor);
*width = gdk_texture_get_width (texture);
*height = gdk_texture_get_height (texture);
*scale = 1;
cairo_surface_reference (surface);
buffer = _gdk_wayland_shm_surface_get_wl_buffer (surface);
wl_buffer_add_listener (buffer, &buffer_listener, surface);
return buffer;
}
if (gdk_cursor_get_fallback (cursor))
return _gdk_wayland_cursor_get_buffer (display,
gdk_cursor_get_fallback (cursor),
desired_scale,
image_index,
hotspot_x, hotspot_y,
width, height,
scale);
return NULL;
}
guint
_gdk_wayland_cursor_get_next_image_index (GdkWaylandDisplay *display,
GdkCursor *cursor,
guint scale,
guint current_image_index,
guint *next_image_delay)
{
struct wl_cursor *c;
if (!gdk_cursor_get_name (cursor) ||
g_str_equal (gdk_cursor_get_name (cursor), "none"))
{
*next_image_delay = 0;
return current_image_index;
}
c = gdk_wayland_cursor_load_for_name (display,
_gdk_wayland_display_get_scaled_cursor_theme (display, scale),
gdk_cursor_get_name (cursor));
if (c)
{
if (current_image_index >= c->image_count)
{
g_warning (G_STRLOC " out of bounds cursor image [%d / %d]",
current_image_index, c->image_count - 1);
current_image_index = 0;
}
if (c->image_count == 1)
{
*next_image_delay = 0;
return current_image_index;
}
else
{
*next_image_delay = c->images[current_image_index]->delay;
return (current_image_index + 1) % c->image_count;
}
}
if (gdk_cursor_get_fallback (cursor))
return _gdk_wayland_cursor_get_next_image_index (display,
gdk_cursor_get_fallback (cursor),
scale,
current_image_index,
next_image_delay);
*next_image_delay = 0;
return current_image_index;
}
Reference in New Issue View Git Blame Copy Permalink