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cursor-tracker: Use a sync methodology for the cursor image

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Rather than have MetaWaylandSeat do all the state management itself,
put the split between the root cursor and the window cursor in the
cursor tracker itself. We'll expand this to add a "grab" cursor in
the next commit, allowing us to force a cursor on grab operations.
This commit is contained in:
Jasper St. Pierre 2013-11-18 19:19:42 -05:00
parent 1f569bef76
commit d96b053c9d
3 changed files with 176 additions and 147 deletions
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16
src/core/meta-cursor-tracker-private.h
View File

@ -31,18 +31,16 @@
gboolean meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
XEvent *xevent);
void meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
MetaCursor cursor);
void meta_cursor_tracker_revert_root (MetaCursorTracker *tracker);
void meta_cursor_tracker_set_buffer (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y);
void meta_cursor_tracker_set_window_cursor (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y);
void meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker);
void meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
MetaCursor cursor);
void meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
int new_x,
int new_y);
void meta_cursor_tracker_paint (MetaCursorTracker *tracker);
void meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
ClutterActor *stage);
#endif

281
src/core/meta-cursor-tracker.c
View File

@ -68,11 +68,31 @@ struct _MetaCursorTracker {
MetaScreen *screen;
gboolean is_showing;
gboolean has_cursor;
gboolean has_hw_cursor;
MetaCursorReference *sprite;
/* The cursor tracker stores the cursor for the window with
* pointer focus, and the cursor for the root window, which
* contains either the default arrow cursor or the 'busy'
* hourglass if we're launching an app.
*
* We choose the first one available -- if there's a window
* cursor, we choose that, otherwise we choose the root
* cursor.
*
* The displayed_cursor contains the chosen cursor.
*/
MetaCursorReference *displayed_cursor;
/* Wayland clients can set a NULL buffer as their cursor
* explicitly, which means that we shouldn't display anything.
* So, we can't simply store a NULL in window_cursor to
* determine an unset window cursor; we need an extra boolean.
*/
gboolean has_window_cursor;
MetaCursorReference *window_cursor;
MetaCursorReference *root_cursor;
MetaCursorReference *default_cursors[META_CURSOR_LAST];
int current_x, current_y;
@ -98,9 +118,6 @@ enum {
static guint signals[LAST_SIGNAL];
static void meta_cursor_tracker_set_sprite (MetaCursorTracker *tracker,
MetaCursorReference *sprite);
static void meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *tracker,
MetaCRTC *crtc,
gboolean has_hw_cursor);
@ -354,7 +371,7 @@ meta_cursor_reference_from_buffer (MetaCursorTracker *tracker,
self->ref_count = 1;
self->hot_x = hot_x;
self->hot_y = hot_y;
backend = clutter_get_default_backend ();
cogl_context = clutter_backend_get_cogl_context (backend);
@ -520,8 +537,8 @@ meta_cursor_tracker_finalize (GObject *object)
MetaCursorTracker *self = META_CURSOR_TRACKER (object);
int i;
if (self->sprite)
meta_cursor_reference_unref (self->sprite);
if (self->displayed_cursor)
meta_cursor_reference_unref (self->displayed_cursor);
if (self->root_cursor)
meta_cursor_reference_unref (self->root_cursor);
@ -646,6 +663,17 @@ meta_cursor_tracker_get_for_screen (MetaScreen *screen)
return self;
}
static void
set_window_cursor (MetaCursorTracker *tracker,
gboolean has_cursor,
MetaCursorReference *cursor)
{
g_clear_pointer (&tracker->window_cursor, meta_cursor_reference_unref);
if (cursor)
tracker->window_cursor = meta_cursor_reference_ref (cursor);
tracker->has_window_cursor = has_cursor;
}
gboolean
meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
XEvent *xevent)
@ -662,7 +690,7 @@ meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
if (notify_event->subtype != XFixesDisplayCursorNotify)
return FALSE;
g_clear_pointer (&tracker->sprite, meta_cursor_reference_unref);
set_window_cursor (tracker, FALSE, NULL);
g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
return TRUE;
@ -677,7 +705,7 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
gboolean free_cursor_data;
CoglContext *ctx;
if (tracker->sprite)
if (tracker->has_window_cursor)
return;
cursor_image = XFixesGetCursorImage (tracker->screen->display->xdisplay);
@ -725,9 +753,11 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
if (sprite != NULL)
{
tracker->sprite = meta_cursor_reference_take_texture (sprite);
tracker->sprite->hot_x = cursor_image->xhot;
tracker->sprite->hot_y = cursor_image->yhot;
MetaCursorReference *cursor = meta_cursor_reference_take_texture (sprite);
cursor->hot_x = cursor_image->xhot;
cursor->hot_y = cursor_image->yhot;
set_window_cursor (tracker, TRUE, cursor);
}
XFree (cursor_image);
}
@ -745,8 +775,8 @@ meta_cursor_tracker_get_sprite (MetaCursorTracker *tracker)
if (!meta_is_wayland_compositor ())
ensure_xfixes_cursor (tracker);
if (tracker->sprite)
return COGL_TEXTURE (tracker->sprite->texture);
if (tracker->displayed_cursor)
return COGL_TEXTURE (tracker->displayed_cursor->texture);
else
return NULL;
}
@ -768,12 +798,13 @@ meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
if (!meta_is_wayland_compositor ())
ensure_xfixes_cursor (tracker);
if (tracker->sprite)
if (tracker->displayed_cursor)
{
MetaCursorReference *displayed_cursor = tracker->displayed_cursor;
if (x)
*x = tracker->sprite->hot_x;
*x = displayed_cursor->hot_x;
if (y)
*y = tracker->sprite->hot_y;
*y = displayed_cursor->hot_y;
}
else
{
@ -798,6 +829,28 @@ ensure_wayland_cursor (MetaCursorTracker *tracker,
return tracker->default_cursors[cursor];
}
void
meta_cursor_tracker_set_window_cursor (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y)
{
MetaCursorReference *cursor;
if (buffer)
cursor = meta_cursor_reference_from_buffer (tracker, buffer, hot_x, hot_y);
else
cursor = NULL;
set_window_cursor (tracker, TRUE, cursor);
}
void
meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker)
{
set_window_cursor (tracker, FALSE, NULL);
}
void
meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
MetaCursor cursor)
@ -824,12 +877,6 @@ meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
}
}
void
meta_cursor_tracker_revert_root (MetaCursorTracker *tracker)
{
meta_cursor_tracker_set_sprite (tracker, tracker->root_cursor);
}
static void
update_hw_cursor (MetaCursorTracker *tracker)
{
@ -838,7 +885,7 @@ update_hw_cursor (MetaCursorTracker *tracker)
unsigned int i, n_crtcs;
gboolean enabled;
enabled = tracker->has_cursor && tracker->sprite->bo != NULL;
enabled = tracker->displayed_cursor && tracker->displayed_cursor->bo != NULL;
tracker->has_hw_cursor = enabled;
monitors = meta_monitor_manager_get ();
@ -884,105 +931,45 @@ move_hw_cursor (MetaCursorTracker *tracker)
}
}
void
meta_cursor_tracker_set_buffer (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y)
static MetaCursorReference *
get_displayed_cursor (MetaCursorTracker *tracker)
{
MetaCursorReference *new_cursor;
if (!tracker->is_showing)
return NULL;
if (buffer)
{
new_cursor = meta_cursor_reference_from_buffer (tracker, buffer, hot_x, hot_y);
meta_cursor_tracker_set_sprite (tracker, new_cursor);
meta_cursor_reference_unref (new_cursor);
}
else
meta_cursor_tracker_set_sprite (tracker, NULL);
if (tracker->has_window_cursor)
return tracker->window_cursor;
return tracker->root_cursor;
}
static void
meta_cursor_tracker_set_sprite (MetaCursorTracker *tracker,
MetaCursorReference *sprite)
sync_displayed_cursor (MetaCursorTracker *tracker)
{
g_assert (meta_is_wayland_compositor ());
MetaCursorReference *displayed_cursor = get_displayed_cursor (tracker);
if (sprite == tracker->sprite)
if (tracker->displayed_cursor == displayed_cursor)
return;
g_clear_pointer (&tracker->sprite, meta_cursor_reference_unref);
g_clear_pointer (&tracker->displayed_cursor, meta_cursor_reference_unref);
if (displayed_cursor)
tracker->displayed_cursor = meta_cursor_reference_ref (displayed_cursor);
if (sprite)
{
tracker->sprite = meta_cursor_reference_ref (sprite);
cogl_pipeline_set_layer_texture (tracker->pipeline, 0, COGL_TEXTURE (tracker->sprite->texture));
}
if (displayed_cursor)
cogl_pipeline_set_layer_texture (tracker->pipeline, 0, COGL_TEXTURE (displayed_cursor->texture));
else
cogl_pipeline_set_layer_texture (tracker->pipeline, 0, NULL);
tracker->has_cursor = tracker->sprite != NULL && tracker->is_showing;
update_hw_cursor (tracker);
g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
meta_cursor_tracker_update_position (tracker, tracker->current_x, tracker->current_y);
}
void
meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
int new_x,
int new_y)
{
g_assert (meta_is_wayland_compositor ());
tracker->current_x = new_x;
tracker->current_y = new_y;
if (tracker->sprite)
{
tracker->current_rect.x = tracker->current_x - tracker->sprite->hot_x;
tracker->current_rect.y = tracker->current_y - tracker->sprite->hot_y;
tracker->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (tracker->sprite->texture));
tracker->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (tracker->sprite->texture));
}
else
{
tracker->current_rect.x = 0;
tracker->current_rect.y = 0;
tracker->current_rect.width = 0;
tracker->current_rect.height = 0;
}
if (tracker->has_hw_cursor)
move_hw_cursor (tracker);
}
void
meta_cursor_tracker_paint (MetaCursorTracker *tracker)
{
g_assert (meta_is_wayland_compositor ());
if (tracker->has_hw_cursor || !tracker->has_cursor)
return;
cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
tracker->pipeline,
tracker->current_rect.x,
tracker->current_rect.y,
tracker->current_rect.x +
tracker->current_rect.width,
tracker->current_rect.y +
tracker->current_rect.height);
tracker->previous_rect = tracker->current_rect;
tracker->previous_is_valid = TRUE;
}
void
meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
ClutterActor *stage)
static void
meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker)
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
ClutterActor *stage = compositor->stage;
cairo_rectangle_int_t clip;
g_assert (meta_is_wayland_compositor ());
@ -999,7 +986,7 @@ meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
tracker->previous_is_valid = FALSE;
}
if (tracker->has_hw_cursor || !tracker->has_cursor)
if (tracker->has_hw_cursor || !tracker->displayed_cursor)
return;
clip.x = tracker->current_rect.x;
@ -1009,6 +996,69 @@ meta_cursor_tracker_queue_redraw (MetaCursorTracker *tracker,
clutter_actor_queue_redraw_with_clip (stage, &clip);
}
static void
sync_cursor (MetaCursorTracker *tracker)
{
MetaCursorReference *displayed_cursor;
sync_displayed_cursor (tracker);
displayed_cursor = tracker->displayed_cursor;
if (displayed_cursor)
{
tracker->current_rect.x = tracker->current_x - displayed_cursor->hot_x;
tracker->current_rect.y = tracker->current_y - displayed_cursor->hot_y;
tracker->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (displayed_cursor->texture));
tracker->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (displayed_cursor->texture));
}
else
{
tracker->current_rect.x = 0;
tracker->current_rect.y = 0;
tracker->current_rect.width = 0;
tracker->current_rect.height = 0;
}
if (tracker->has_hw_cursor)
move_hw_cursor (tracker);
else
meta_cursor_tracker_queue_redraw (tracker);
}
void
meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
int new_x,
int new_y)
{
g_assert (meta_is_wayland_compositor ());
tracker->current_x = new_x;
tracker->current_y = new_y;
sync_cursor (tracker);
}
void
meta_cursor_tracker_paint (MetaCursorTracker *tracker)
{
g_assert (meta_is_wayland_compositor ());
if (tracker->has_hw_cursor || !tracker->displayed_cursor)
return;
cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
tracker->pipeline,
tracker->current_rect.x,
tracker->current_rect.y,
tracker->current_rect.x +
tracker->current_rect.width,
tracker->current_rect.y +
tracker->current_rect.height);
tracker->previous_rect = tracker->current_rect;
tracker->previous_is_valid = TRUE;
}
static void
meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *tracker,
MetaCRTC *crtc,
@ -1016,15 +1066,16 @@ meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *tracker,
{
if (has)
{
MetaCursorReference *displayed_cursor = tracker->displayed_cursor;
union gbm_bo_handle handle;
int width, height;
int hot_x, hot_y;
handle = gbm_bo_get_handle (tracker->sprite->bo);
width = gbm_bo_get_width (tracker->sprite->bo);
height = gbm_bo_get_height (tracker->sprite->bo);
hot_x = tracker->sprite->hot_x;
hot_y = tracker->sprite->hot_y;
handle = gbm_bo_get_handle (displayed_cursor->bo);
width = gbm_bo_get_width (displayed_cursor->bo);
height = gbm_bo_get_height (displayed_cursor->bo);
hot_x = displayed_cursor->hot_x;
hot_y = displayed_cursor->hot_y;
drmModeSetCursor2 (tracker->drm_fd, crtc->crtc_id, handle.u32,
width, height, hot_x, hot_y);
@ -1100,13 +1151,7 @@ meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,
if (meta_is_wayland_compositor ())
{
MetaWaylandCompositor *compositor;
compositor = meta_wayland_compositor_get_default ();
tracker->has_cursor = tracker->sprite != NULL && visible;
update_hw_cursor (tracker);
meta_cursor_tracker_queue_redraw (tracker, compositor->stage);
sync_cursor (tracker);
}
else
{

26
src/wayland/meta-wayland-seat.c
View File

@ -51,14 +51,7 @@ static void
pointer_unmap_sprite (MetaWaylandSeat *seat)
{
if (seat->cursor_tracker)
{
meta_cursor_tracker_set_buffer (seat->cursor_tracker,
NULL, 0, 0);
if (seat->current_stage)
meta_cursor_tracker_queue_redraw (seat->cursor_tracker,
CLUTTER_ACTOR (seat->current_stage));
}
meta_cursor_tracker_set_window_cursor (seat->cursor_tracker, NULL, 0, 0);
if (seat->sprite)
{
@ -76,14 +69,10 @@ meta_wayland_seat_update_sprite (MetaWaylandSeat *seat)
return;
buffer = seat->sprite->buffer_ref.buffer->resource;
meta_cursor_tracker_set_buffer (seat->cursor_tracker,
buffer,
seat->hotspot_x,
seat->hotspot_y);
if (seat->current_stage)
meta_cursor_tracker_queue_redraw (seat->cursor_tracker,
CLUTTER_ACTOR (seat->current_stage));
meta_cursor_tracker_set_window_cursor (seat->cursor_tracker,
buffer,
seat->hotspot_x,
seat->hotspot_y);
}
static void
@ -377,10 +366,7 @@ meta_wayland_seat_update_pointer (MetaWaylandSeat *seat,
wl_fixed_to_int (seat->pointer.y));
if (seat->pointer.current == NULL)
meta_cursor_tracker_revert_root (seat->cursor_tracker);
meta_cursor_tracker_queue_redraw (seat->cursor_tracker,
CLUTTER_ACTOR (event->any.stage));
meta_cursor_tracker_unset_window_cursor (seat->cursor_tracker);
}
}