forked from AuroraMiddleware/gtk
wayland: Support scaling of theme based cursors
Support scaling of cursors created from themes. The default scale is always 1, but if the pointer cursor surface enters an output with a higher scale, load the larger version of the cursor theme and use the image from that theme. This assumes the theme size is set to one that fits with an output scale = 1. https://bugzilla.gnome.org/show_bug.cgi?id=746141
This commit is contained in:
Jonas Ådahl
parent
7b2cdabc2e
commit
465647e964
@ -59,6 +59,7 @@ struct _GdkWaylandCursor
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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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@ -83,11 +84,18 @@ _gdk_wayland_display_finalize_cursors (GdkWaylandDisplay *display)
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}
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static gboolean
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set_cursor_from_theme (GdkWaylandCursor *cursor,
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struct wl_cursor_theme *theme)
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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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@ -106,8 +114,7 @@ set_cursor_from_theme (GdkWaylandCursor *cursor,
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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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_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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@ -116,7 +123,7 @@ _gdk_wayland_display_update_cursors (GdkWaylandDisplay *display,
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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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_gdk_wayland_cursor_update (display, cursor);
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}
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static void
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@ -169,7 +176,7 @@ _gdk_wayland_cursor_get_buffer (GdkCursor *cursor,
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*w = image->width;
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*h = image->height;
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*scale = 1;
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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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@ -217,6 +224,28 @@ _gdk_wayland_cursor_get_next_image_index (GdkCursor *cursor,
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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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@ -233,9 +262,15 @@ _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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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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_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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@ -248,7 +283,9 @@ _gdk_wayland_display_get_cursor_for_type (GdkDisplay *display,
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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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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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@ -256,8 +293,18 @@ _gdk_wayland_display_get_cursor_for_type (GdkDisplay *display,
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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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_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 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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@ -273,12 +320,13 @@ _gdk_wayland_display_get_cursor_for_name (GdkDisplay *display,
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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, "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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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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@ -286,6 +334,13 @@ _gdk_wayland_display_get_cursor_for_name (GdkDisplay *display,
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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_surface (GdkDisplay *display,
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cairo_surface_t *surface,
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@ -93,6 +93,8 @@ struct _GdkWaylandDeviceData
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GdkDragContext *drop_context;
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struct wl_surface *pointer_surface;
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guint current_output_scale;
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GSList *pointer_surface_outputs;
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};
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struct _GdkWaylandDevice
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@ -253,7 +255,15 @@ gdk_wayland_device_set_window_cursor (GdkDevice *device,
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* the default cursor
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*/
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if (!cursor)
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cursor = _gdk_wayland_display_get_cursor_for_type (device->display, GDK_LEFT_PTR);
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{
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guint scale = wd->current_output_scale;
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cursor =
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_gdk_wayland_display_get_cursor_for_type_with_scale (wd->display,
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GDK_LEFT_PTR,
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scale);
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}
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else
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_gdk_wayland_cursor_set_scale (cursor, wd->current_output_scale);
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if (cursor == wd->cursor)
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return;
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@ -1756,6 +1766,78 @@ init_devices (GdkWaylandDeviceData *device)
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_gdk_device_set_associated_device (device->master_keyboard, device->master_pointer);
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}
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static void
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pointer_surface_update_scale (GdkWaylandDeviceData *device)
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{
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GdkWaylandDisplay *wayland_display = GDK_WAYLAND_DISPLAY (device->display);
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guint32 scale;
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GSList *l;
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if (wayland_display->compositor_version < WL_SURFACE_HAS_BUFFER_SCALE)
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{
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/* We can't set the scale on this surface */
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return;
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}
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scale = 1;
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for (l = device->pointer_surface_outputs; l != NULL; l = l->next)
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{
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guint32 output_scale =
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_gdk_wayland_screen_get_output_scale (wayland_display->screen,
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l->data);
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scale = MAX (scale, output_scale);
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}
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device->current_output_scale = scale;
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if (device->grab_cursor)
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_gdk_wayland_cursor_set_scale (device->grab_cursor, scale);
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if (device->cursor)
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_gdk_wayland_cursor_set_scale (device->cursor, scale);
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gdk_wayland_device_update_window_cursor (device);
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}
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static void
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pointer_surface_enter (void *data,
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struct wl_surface *wl_surface,
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struct wl_output *output)
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{
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GdkWaylandDeviceData *device = data;
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GDK_NOTE (EVENTS,
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g_message ("pointer surface of device %p entered output %p",
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device, output));
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device->pointer_surface_outputs =
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g_slist_append (device->pointer_surface_outputs, output);
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pointer_surface_update_scale (device);
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}
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static void
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pointer_surface_leave (void *data,
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struct wl_surface *wl_surface,
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struct wl_output *output)
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{
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GdkWaylandDeviceData *device = data;
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GDK_NOTE (EVENTS,
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g_message ("pointer surface of device %p left output %p",
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device, output));
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device->pointer_surface_outputs =
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g_slist_remove (device->pointer_surface_outputs, output);
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pointer_surface_update_scale (device);
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}
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static const struct wl_surface_listener pointer_surface_listener = {
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pointer_surface_enter,
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pointer_surface_leave
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};
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void
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_gdk_wayland_device_manager_add_seat (GdkDeviceManager *device_manager,
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guint32 id,
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@ -1786,8 +1868,12 @@ _gdk_wayland_device_manager_add_seat (GdkDeviceManager *device_manager,
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wl_data_device_add_listener (device->data_device,
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&data_device_listener, device);
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device->current_output_scale = 1;
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device->pointer_surface =
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wl_compositor_create_surface (display_wayland->compositor);
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wl_surface_add_listener (device->pointer_surface,
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&pointer_surface_listener,
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device);
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init_devices (device);
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}
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@ -581,6 +581,7 @@ gdk_wayland_display_set_cursor_theme (GdkDisplay *display,
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{
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GdkWaylandDisplay *wayland_display = GDK_WAYLAND_DISPLAY(display);
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struct wl_cursor_theme *theme;
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int i;
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g_assert (wayland_display);
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g_assert (wayland_display->shm);
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@ -592,11 +593,49 @@ gdk_wayland_display_set_cursor_theme (GdkDisplay *display,
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return;
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}
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_gdk_wayland_display_update_cursors (wayland_display, theme);
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for (i = 0; i < GDK_WAYLAND_THEME_SCALES_COUNT; i++)
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{
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if (wayland_display->scaled_cursor_themes[i])
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{
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wl_cursor_theme_destroy (wayland_display->scaled_cursor_themes[i]);
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wayland_display->scaled_cursor_themes[i] = NULL;
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}
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}
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wayland_display->scaled_cursor_themes[0] = theme;
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if (wayland_display->cursor_theme_name != NULL)
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free (wayland_display->cursor_theme_name);
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wayland_display->cursor_theme_name = g_strdup (name);
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wayland_display->cursor_theme_size = size;
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if (wayland_display->cursor_theme != NULL)
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wl_cursor_theme_destroy (wayland_display->cursor_theme);
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wayland_display->cursor_theme = theme;
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_gdk_wayland_display_update_cursors (wayland_display);
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}
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struct wl_cursor_theme *
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_gdk_wayland_display_get_scaled_cursor_theme (GdkWaylandDisplay *wayland_display,
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guint scale)
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{
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struct wl_cursor_theme *theme;
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g_assert (wayland_display->cursor_theme_name);
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g_assert (scale <= GDK_WAYLAND_MAX_THEME_SCALE);
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g_assert (scale >= 1);
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theme = wayland_display->scaled_cursor_themes[scale - 1];
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if (!theme)
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{
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theme = wl_cursor_theme_load (wayland_display->cursor_theme_name,
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wayland_display->cursor_theme_size * scale,
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wayland_display->shm);
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if (theme == NULL)
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{
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g_warning ("Failed to load cursor theme %s with scale %u\n",
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wayland_display->cursor_theme_name, scale);
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return NULL;
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}
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wayland_display->scaled_cursor_themes[scale - 1] = theme;
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}
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return theme;
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}
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static void
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@ -42,6 +42,9 @@
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G_BEGIN_DECLS
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#define GDK_WAYLAND_MAX_THEME_SCALE 2
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#define GDK_WAYLAND_THEME_SCALES_COUNT GDK_WAYLAND_MAX_THEME_SCALE
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typedef struct _GdkWaylandSelection GdkWaylandSelection;
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struct _GdkWaylandDisplay
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@ -69,7 +72,9 @@ struct _GdkWaylandDisplay
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struct wl_data_device_manager *data_device_manager;
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struct wl_subcompositor *subcompositor;
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struct wl_cursor_theme *cursor_theme;
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struct wl_cursor_theme *scaled_cursor_themes[GDK_WAYLAND_THEME_SCALES_COUNT];
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gchar *cursor_theme_name;
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int cursor_theme_size;
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GHashTable *cursor_cache;
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GSource *event_source;
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@ -56,11 +56,16 @@ gboolean _gdk_wayland_keymap_key_is_modifier (GdkKeymap *keymap,
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void _gdk_wayland_display_init_cursors (GdkWaylandDisplay *display);
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void _gdk_wayland_display_finalize_cursors (GdkWaylandDisplay *display);
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void _gdk_wayland_display_update_cursors (GdkWaylandDisplay *display,
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struct wl_cursor_theme *theme);
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void _gdk_wayland_display_update_cursors (GdkWaylandDisplay *display);
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struct wl_cursor_theme * _gdk_wayland_display_get_scaled_cursor_theme (GdkWaylandDisplay *wayland_display,
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guint scale);
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GdkCursor *_gdk_wayland_display_get_cursor_for_type (GdkDisplay *display,
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GdkCursorType cursor_type);
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GdkCursor *_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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GdkCursor *_gdk_wayland_display_get_cursor_for_name (GdkDisplay *display,
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const gchar *name);
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GdkCursor *_gdk_wayland_display_get_cursor_for_surface (GdkDisplay *display,
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@ -87,6 +92,9 @@ guint _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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void _gdk_wayland_cursor_set_scale (GdkCursor *cursor,
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guint scale);
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GdkDragProtocol _gdk_wayland_window_get_drag_protocol (GdkWindow *window,
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GdkWindow **target);
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