[mutter/wip/tiling: 124/125] window: Add new tiling code
- From: Jasper St. Pierre <jstpierre src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [mutter/wip/tiling: 124/125] window: Add new tiling code
- Date: Tue, 29 Sep 2015 15:47:19 +0000 (UTC)
commit b3c1f833b731632a54a3b8468f9eeae344e2d0de
Author: Jasper St. Pierre <jstpierre mecheye net>
Date: Tue Jun 30 18:10:58 2015 -0700
window: Add new tiling code
The new tiling code, instead of based around "tiling states", is instead
based around constrained edges. This allows us to have windows that have
three constrained edges, but keep one free-floating, e.g. a window tiled
to the left has the left, top, and bottom edges constrained, but the
right edge can be left resizable.
This system also is easily extended to support corner tiling. We also,
using the new "size state" system, also keep normal, tiled, and
maximized sizes independently, allowing the maximize button to bounce
between maximized and tiled states without reverting to normal in
between. Dragging from the top will always restore the normal state,
though.
https://bugzilla.gnome.org/show_bug.cgi?id=751857
src/core/constraints.c | 46 ++++++++-
src/core/screen-private.h | 17 +++-
src/core/screen.c | 54 +++++++---
src/core/window-private.h | 5 +-
src/core/window.c | 261 +++++++++++++++++++++++++++++++++++++++------
src/meta/common.h | 20 ++++
src/meta/window.h | 3 +
7 files changed, 351 insertions(+), 55 deletions(-)
---
diff --git a/src/core/constraints.c b/src/core/constraints.c
index 9247ce6..e0e3490 100644
--- a/src/core/constraints.c
+++ b/src/core/constraints.c
@@ -97,7 +97,7 @@ typedef enum
PRIORITY_ENTIRELY_VISIBLE_ON_WORKAREA = 1,
PRIORITY_SIZE_HINTS_INCREMENTS = 1,
PRIORITY_MAXIMIZATION = 2,
- PRIORITY_TILING = 2,
+ PRIORITY_CONSTRAINED_EDGES = 2,
PRIORITY_FULLSCREEN = 2,
PRIORITY_SIZE_HINTS_LIMITS = 3,
PRIORITY_TITLEBAR_VISIBLE = 4,
@@ -152,6 +152,10 @@ static gboolean constrain_maximization (MetaWindow *window,
ConstraintInfo *info,
ConstraintPriority priority,
gboolean check_only);
+static gboolean constrain_constrained_edges (MetaWindow *window,
+ ConstraintInfo *info,
+ ConstraintPriority priority,
+ gboolean check_only);
static gboolean constrain_fullscreen (MetaWindow *window,
ConstraintInfo *info,
ConstraintPriority priority,
@@ -209,6 +213,7 @@ typedef struct {
static const Constraint all_constraints[] = {
{constrain_modal_dialog, "constrain_modal_dialog"},
{constrain_maximization, "constrain_maximization"},
+ {constrain_constrained_edges, "constrain_constrained_edges"},
{constrain_fullscreen, "constrain_fullscreen"},
{constrain_size_increments, "constrain_size_increments"},
{constrain_size_limits, "constrain_size_limits"},
@@ -799,6 +804,45 @@ constrain_fullscreen (MetaWindow *window,
}
static gboolean
+constrain_constrained_edges (MetaWindow *window,
+ ConstraintInfo *info,
+ ConstraintPriority priority,
+ gboolean check_only)
+{
+ MetaRectangle monitor, new_rectangle;
+ gboolean constraint_already_satisfied;
+
+ if (priority > PRIORITY_CONSTRAINED_EDGES)
+ return TRUE;
+
+ /* Determine whether constraint applies; exit if it doesn't */
+ if (!window->constrained_edges)
+ return TRUE;
+
+ new_rectangle = info->current;
+ monitor = info->work_area_monitor;
+
+ if (window->constrained_edges & META_DIRECTION_LEFT)
+ new_rectangle.x = monitor.x;
+ if (window->constrained_edges & META_DIRECTION_RIGHT)
+ new_rectangle.x = monitor.x + monitor.width - new_rectangle.width;
+ if (window->constrained_edges & META_DIRECTION_TOP)
+ new_rectangle.y = monitor.y;
+ if (window->constrained_edges & META_DIRECTION_BOTTOM)
+ new_rectangle.y = monitor.y + monitor.height - new_rectangle.height;
+
+ constraint_already_satisfied =
+ meta_rectangle_equal (&info->current, &new_rectangle);
+
+ if (check_only || constraint_already_satisfied)
+ return constraint_already_satisfied;
+
+ /*** Enforce constraint ***/
+ info->current = new_rectangle;
+ return TRUE;
+}
+
+static gboolean
constrain_size_increments (MetaWindow *window,
ConstraintInfo *info,
ConstraintPriority priority,
diff --git a/src/core/screen-private.h b/src/core/screen-private.h
index 438d1f4..76ce2f2 100644
--- a/src/core/screen-private.h
+++ b/src/core/screen-private.h
@@ -57,7 +57,13 @@ struct _MetaScreen
MetaRectangle rect; /* Size of screen; rect.x & rect.y are always 0 */
MetaUI *ui;
- guint tile_preview_timeout_id;
+ struct {
+ gboolean exists;
+ guint timeout_id;
+ MetaWindow *window;
+ MetaRectangle area;
+ int monitor;
+ } tile_preview;
MetaWorkspace *active_workspace;
@@ -136,9 +142,12 @@ void meta_screen_foreach_window (MetaScreen *scree
void meta_screen_update_cursor (MetaScreen *screen);
-void meta_screen_update_tile_preview (MetaScreen *screen,
- gboolean delay);
-void meta_screen_hide_tile_preview (MetaScreen *screen);
+void meta_screen_update_tile_preview (MetaScreen *screen,
+ MetaWindow *window,
+ MetaRectangle area,
+ int monitor,
+ gboolean delay);
+void meta_screen_hide_tile_preview (MetaScreen *screen);
MetaWindow* meta_screen_get_mouse_window (MetaScreen *screen,
MetaWindow *not_this_one);
diff --git a/src/core/screen.c b/src/core/screen.c
index 14193d4..6a5eebf 100644
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -723,8 +723,6 @@ meta_screen_new (MetaDisplay *display,
screen->ui = meta_ui_new (screen->display->xdisplay,
screen->xscreen);
- screen->tile_preview_timeout_id = 0;
-
screen->stack = meta_stack_new (screen);
screen->stack_tracker = meta_stack_tracker_new (screen);
@@ -841,8 +839,8 @@ meta_screen_free (MetaScreen *screen,
g_free (screen->monitor_infos);
- if (screen->tile_preview_timeout_id)
- g_source_remove (screen->tile_preview_timeout_id);
+ if (screen->tile_preview.timeout_id)
+ g_source_remove (screen->tile_preview.timeout_id);
g_free (screen->screen_name);
@@ -1320,43 +1318,69 @@ meta_screen_set_cursor (MetaScreen *screen,
static gboolean
meta_screen_update_tile_preview_timeout (gpointer data)
{
+ MetaScreen *screen = data;
+
+ screen->tile_preview.timeout_id = 0;
+
+ if (screen->tile_preview.exists)
+ {
+ meta_compositor_show_tile_preview (screen->display->compositor,
+ screen->tile_preview.window,
+ &screen->tile_preview.area,
+ screen->tile_preview.monitor);
+ }
+ else
+ {
+ meta_compositor_hide_tile_preview (screen->display->compositor);
+ }
+
return FALSE;
}
#define TILE_PREVIEW_TIMEOUT_MS 200
void
-meta_screen_update_tile_preview (MetaScreen *screen,
- gboolean delay)
+meta_screen_update_tile_preview (MetaScreen *screen,
+ MetaWindow *window,
+ MetaRectangle area,
+ int monitor,
+ gboolean delay)
{
+ screen->tile_preview.exists = TRUE;
+ screen->tile_preview.window = window;
+ screen->tile_preview.area = area;
+ screen->tile_preview.monitor = monitor;
+
if (delay)
{
- if (screen->tile_preview_timeout_id > 0)
+ if (screen->tile_preview.timeout_id > 0)
return;
- screen->tile_preview_timeout_id =
+ screen->tile_preview.timeout_id =
g_timeout_add (TILE_PREVIEW_TIMEOUT_MS,
meta_screen_update_tile_preview_timeout,
screen);
- g_source_set_name_by_id (screen->tile_preview_timeout_id,
+ g_source_set_name_by_id (screen->tile_preview.timeout_id,
"[mutter] meta_screen_update_tile_preview_timeout");
}
else
{
- if (screen->tile_preview_timeout_id > 0)
- g_source_remove (screen->tile_preview_timeout_id);
+ if (screen->tile_preview.timeout_id > 0)
+ g_source_remove (screen->tile_preview.timeout_id);
- meta_screen_update_tile_preview_timeout ((gpointer)screen);
+ meta_screen_update_tile_preview_timeout ((gpointer) screen);
}
}
void
meta_screen_hide_tile_preview (MetaScreen *screen)
{
- if (screen->tile_preview_timeout_id > 0)
- g_source_remove (screen->tile_preview_timeout_id);
+ screen->tile_preview.exists = FALSE;
+
+ if (screen->tile_preview.timeout_id > 0)
+ g_source_remove (screen->tile_preview.timeout_id);
- meta_compositor_hide_tile_preview (screen->display->compositor);
+ meta_screen_update_tile_preview_timeout ((gpointer) screen);
}
MetaWindow*
diff --git a/src/core/window-private.h b/src/core/window-private.h
index 7a2e5d8..f4eb468 100644
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -450,8 +450,10 @@ struct _MetaWindow
/* This is where we store data while in another state. The information
* above in MetaWindow is always the current state of the window. */
struct {
- MetaWindowSizeState normal, maximized;
+ MetaWindowSizeState normal, tiled, maximized;
} size_states;
+
+ MetaDirection constrained_edges;
};
struct _MetaWindowClass
@@ -617,7 +619,6 @@ void meta_window_update_for_monitors_changed (MetaWindow *window);
void meta_window_on_all_workspaces_changed (MetaWindow *window);
gboolean meta_window_should_attach_to_parent (MetaWindow *window);
-gboolean meta_window_can_tile_side_by_side (MetaWindow *window);
gboolean meta_window_updates_are_frozen (MetaWindow *window);
diff --git a/src/core/window.c b/src/core/window.c
index 76f856c..cba2284 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -2595,6 +2595,8 @@ get_current_size_state (MetaWindow *window)
{
if (META_WINDOW_MAXIMIZED (window))
return &window->size_states.maximized;
+ else if (window->constrained_edges != 0)
+ return &window->size_states.tiled;
else
return &window->size_states.normal;
}
@@ -2866,35 +2868,48 @@ meta_window_requested_dont_bypass_compositor (MetaWindow *window)
return window->bypass_compositor == _NET_WM_BYPASS_COMPOSITOR_HINT_OFF;
}
-static gboolean
-meta_window_can_tile_maximized (MetaWindow *window)
+static void
+get_tile_zone_area (MetaWindow *window,
+ MetaTileZone tile_zone,
+ MetaRectangle *rect_p)
{
- return window->has_maximize_func;
-}
+ MetaRectangle work_area;
+ meta_window_get_work_area_for_monitor (window, window->monitor->number, &work_area);
-gboolean
-meta_window_can_tile_side_by_side (MetaWindow *window)
-{
- int monitor;
- MetaRectangle tile_area;
- MetaRectangle client_rect;
+ MetaRectangle rect = {
+ .x = work_area.x,
+ .y = work_area.y,
+ };
- if (!meta_window_can_tile_maximized (window))
- return FALSE;
-
- monitor = meta_screen_get_current_monitor (window->screen);
- meta_window_get_work_area_for_monitor (window, monitor, &tile_area);
-
- /* Do not allow tiling in portrait orientation */
- if (tile_area.height > tile_area.width)
- return FALSE;
-
- tile_area.width /= 2;
+ switch (tile_zone & META_DIRECTION_HORIZONTAL)
+ {
+ case META_DIRECTION_HORIZONTAL:
+ rect.width = work_area.width;
+ break;
+ case META_DIRECTION_LEFT:
+ rect.width = work_area.width / 2;
+ break;
+ case META_DIRECTION_RIGHT:
+ rect.x += work_area.width / 2;
+ rect.width = work_area.width / 2;
+ break;
+ }
- meta_window_frame_rect_to_client_rect (window, &tile_area, &client_rect);
+ switch (tile_zone & META_DIRECTION_VERTICAL)
+ {
+ case META_DIRECTION_VERTICAL:
+ rect.height = work_area.height;
+ break;
+ case META_DIRECTION_TOP:
+ rect.height = work_area.height / 2;
+ break;
+ case META_DIRECTION_BOTTOM:
+ rect.y += work_area.height / 2;
+ rect.height = work_area.height / 2;
+ break;
+ }
- return client_rect.width >= window->size_hints.min_width &&
- client_rect.height >= window->size_hints.min_height;
+ *rect_p = rect;
}
static void
@@ -3008,7 +3023,10 @@ meta_window_unmaximize (MetaWindow *window,
g_assert (unmaximize_horizontally || unmaximize_vertically);
MetaWindowSizeState *size_state;
- size_state = &window->size_states.normal;
+ if (window->constrained_edges != 0)
+ size_state = &window->size_states.tiled;
+ else
+ size_state = &window->size_states.normal;
/* Special-case unmaximizing both directions to restoring the
* last state. This makes the unmaximize buttons go back to the
@@ -3071,6 +3089,12 @@ meta_window_unmaximize (MetaWindow *window,
new_size_state.rect = target_rect;
+ /* Clear any constrained edges when unmaximizing */
+ if (unmaximize_horizontally)
+ window->constrained_edges &= ~META_DIRECTION_HORIZONTAL;
+ if (unmaximize_vertically)
+ window->constrained_edges &= ~META_DIRECTION_VERTICAL;
+
meta_window_unmaximize_internal (window, &new_size_state);
}
}
@@ -5449,6 +5473,119 @@ update_move_timeout (gpointer data)
return FALSE;
}
+typedef enum {
+ META_RECT_EDGE_W = 1 << 0, /* west */
+ META_RECT_EDGE_E = 1 << 1, /* east */
+ META_RECT_EDGE_H = 1 << 2, /* horizontal (middle) */
+ META_RECT_EDGE_N = 1 << 3, /* north */
+ META_RECT_EDGE_S = 1 << 4, /* south */
+ META_RECT_EDGE_V = 1 << 5, /* vertical (middle) */
+} MetaRectEdges;
+
+typedef struct {
+ int x1, y1, x2, y2;
+} Box;
+
+static MetaRectEdges
+get_rect_edges (Box outer, Box inner, int x, int y)
+{
+ MetaDirection edges = 0;
+
+ if (x >= outer.x1 && x < inner.x1)
+ edges |= META_RECT_EDGE_W;
+ else if (x >= inner.x2 && x < outer.x2)
+ edges |= META_RECT_EDGE_E;
+ else if (x >= inner.x1 && x < inner.x2)
+ edges |= META_RECT_EDGE_H;
+
+ if (y >= outer.y1 && y < inner.y1)
+ edges |= META_RECT_EDGE_N;
+ else if (y >= inner.y2 && y < outer.y2)
+ edges |= META_RECT_EDGE_S;
+ else if (y >= inner.y1 && y < inner.y2)
+ edges |= META_RECT_EDGE_V;
+
+ return edges;
+}
+
+static inline Box
+box_from_rect (MetaRectangle rect)
+{
+ Box box = { .x1 = rect.x, .y1 = rect.y, .x2 = rect.x + rect.width, .y2 = rect.y + rect.height };
+ return box;
+}
+
+static inline int
+get_drag_shake_threshold (void)
+{
+ /* Originally for detaching maximized windows, but we use this
+ * for the zones at the sides of the monitor where trigger tiling
+ * because it's about the right size
+ */
+#define DRAG_THRESHOLD_TO_SHAKE_THRESHOLD_FACTOR 6
+ return meta_prefs_get_drag_threshold () * DRAG_THRESHOLD_TO_SHAKE_THRESHOLD_FACTOR;
+}
+
+static MetaTileZone
+get_tile_zone_for_pointer (MetaWindow *window,
+ int x, int y)
+{
+ if (!window->has_maximize_func)
+ return 0;
+
+ const MetaMonitorInfo *monitor;
+ MetaRectangle work_area;
+ monitor = meta_screen_get_current_monitor_info_for_pos (window->screen, x, y);
+ meta_window_get_work_area_for_monitor (window, monitor->number, &work_area);
+
+ MetaRectangle client_rect;
+ meta_window_frame_rect_to_client_rect (window, &work_area, &client_rect);
+
+ gboolean can_tile_horz = ((client_rect.width / 2) >= window->size_hints.min_width);
+ gboolean can_tile_vert = ((client_rect.height / 2) >= window->size_hints.min_height);
+ gboolean can_max_horz = (client_rect.width >= window->size_hints.min_width);
+ gboolean can_max_vert = (client_rect.height >= window->size_hints.min_height);
+
+ int shake_threshold = get_drag_shake_threshold ();
+ Box outer = box_from_rect (monitor->rect);
+ /* fudge the work area with the shake threshold */
+ Box inner = box_from_rect (work_area);
+ inner.x1 = MAX (inner.x1, shake_threshold);
+ inner.x2 = MIN (outer.x2 - shake_threshold, inner.x2);
+ inner.y1 = MAX (inner.y1, shake_threshold);
+ inner.y2 = MIN (outer.y2 - shake_threshold, inner.y2);
+
+ MetaRectEdges edges = get_rect_edges (outer, inner, x, y);
+
+ /* Simple cases: outside of a monitor, or in the inner rectangle
+ * entirely aren't tile zones. */
+ if (edges == 0 ||
+ edges == (META_RECT_EDGE_H | META_RECT_EDGE_V))
+ return 0;
+
+ /* Special case: the top border is maximization */
+ if (edges == (META_RECT_EDGE_N | META_RECT_EDGE_H))
+ return META_TILE_ZONE_MAXIMIZED;
+
+ MetaTileZone tile_zone = 0;
+
+ if ((edges & META_RECT_EDGE_W) && can_tile_horz)
+ tile_zone |= META_DIRECTION_LEFT;
+ else if ((edges & META_RECT_EDGE_E) && can_tile_horz)
+ tile_zone |= META_DIRECTION_RIGHT;
+ else if ((edges & META_RECT_EDGE_H) && can_max_horz)
+ tile_zone |= META_DIRECTION_HORIZONTAL;
+
+ if ((edges & META_RECT_EDGE_N) && can_tile_vert)
+ tile_zone |= META_DIRECTION_TOP;
+ else if ((edges & META_RECT_EDGE_S) && can_tile_vert)
+ tile_zone |= META_DIRECTION_BOTTOM;
+ else if ((edges & META_RECT_EDGE_V) && can_max_vert)
+ tile_zone |= META_DIRECTION_VERTICAL;
+
+ return tile_zone;
+}
+
static void
update_move (MetaWindow *window,
gboolean snap,
@@ -5485,20 +5622,36 @@ update_move (MetaWindow *window,
if (dx == 0 && dy == 0)
return;
- /* Originally for detaching maximized windows, but we use this
- * for the zones at the sides of the monitor where trigger tiling
- * because it's about the right size
- */
-#define DRAG_THRESHOLD_TO_SHAKE_THRESHOLD_FACTOR 6
- shake_threshold = meta_prefs_get_drag_threshold () *
- DRAG_THRESHOLD_TO_SHAKE_THRESHOLD_FACTOR;
+ shake_threshold = get_drag_shake_threshold ();
/* shake loose (unmaximize) maximized or tiled window if dragged beyond
* the threshold in the Y direction. Tiled windows can also be pulled
* loose via X motion.
*/
+ int shake_x_threshold = G_MAXINT;
+
+ if ((window->constrained_edges & META_DIRECTION_HORIZONTAL) &&
+ (window->constrained_edges & META_DIRECTION_HORIZONTAL) != META_DIRECTION_HORIZONTAL)
+ shake_x_threshold = shake_threshold;
+
+ if (meta_prefs_get_edge_tiling ())
+ {
+ MetaTileZone tile_zone = get_tile_zone_for_pointer (window, x, y);
+ if (tile_zone != 0)
+ {
+ MetaRectangle tile_area;
+ get_tile_zone_area (window, tile_zone, &tile_area);
+ const MetaMonitorInfo *monitor = meta_screen_get_current_monitor_info_for_pos (window->screen, x,
y);
+ meta_screen_update_tile_preview (window->screen, window, tile_area, monitor->number, TRUE);
+ }
+ else
+ {
+ meta_screen_hide_tile_preview (window->screen);
+ }
+ }
- if ((META_WINDOW_MAXIMIZED (window) && ABS (dy) >= shake_threshold))
+ if ((META_WINDOW_MAXIMIZED (window) || window->constrained_edges) &&
+ (ABS (dy) >= shake_threshold || ABS (dx) >= shake_x_threshold))
{
double prop;
@@ -5528,6 +5681,8 @@ update_move (MetaWindow *window,
window->size_states.normal.rect.x = display->grab_initial_window_pos.x;
window->size_states.normal.rect.y = display->grab_initial_window_pos.y;
+ window->constrained_edges = 0;
+
meta_window_unmaximize_internal (window, &window->size_states.normal);
return;
}
@@ -5782,6 +5937,10 @@ end_grab_op (MetaWindow *window,
update_move (window,
modifiers & CLUTTER_SHIFT_MASK,
x, y);
+
+ MetaTileZone tile_zone = get_tile_zone_for_pointer (window, x, y);
+ if (tile_zone != 0)
+ meta_window_tile (window, tile_zone);
}
else if (meta_grab_op_is_resizing (window->display->grab_op))
{
@@ -5791,6 +5950,9 @@ end_grab_op (MetaWindow *window,
TRUE);
}
}
+
+ meta_screen_hide_tile_preview (window->screen);
+
meta_display_end_grab_op (window->display, clutter_event_get_time (event));
}
@@ -7594,3 +7756,36 @@ meta_window_emit_size_changed (MetaWindow *window)
{
g_signal_emit (window, window_signals[SIZE_CHANGED], 0);
}
+
+void
+meta_window_tile (MetaWindow *window,
+ MetaTileZone tile_zone)
+{
+ /* Special case: Tile maximizing is the same as maximizing. */
+ if (tile_zone == META_TILE_ZONE_MAXIMIZED)
+ {
+ meta_window_maximize (window, META_MAXIMIZE_BOTH);
+ return;
+ }
+
+ MetaWindowSizeState *size_state = get_current_size_state (window);
+ save_size_state (window, size_state, &window->rect);
+
+ window->constrained_edges = tile_zone;
+
+ if ((window->constrained_edges & META_DIRECTION_VERTICAL) == META_DIRECTION_VERTICAL)
+ window->maximized_vertically = TRUE;
+ if ((window->constrained_edges & META_DIRECTION_HORIZONTAL) == META_DIRECTION_HORIZONTAL)
+ window->maximized_horizontally = TRUE;
+
+ meta_window_recalc_features (window);
+ set_net_wm_state (window);
+
+ MetaRectangle target_rect;
+ get_tile_zone_area (window, tile_zone, &target_rect);
+
+ meta_window_move_resize_internal (window,
+ META_MOVE_RESIZE_MOVE_ACTION | META_MOVE_RESIZE_RESIZE_ACTION |
META_MOVE_RESIZE_STATE_CHANGED,
+ NorthWestGravity,
+ target_rect);
+}
diff --git a/src/meta/common.h b/src/meta/common.h
index d6a7cf7..bf87b35 100644
--- a/src/meta/common.h
+++ b/src/meta/common.h
@@ -317,6 +317,26 @@ typedef enum
META_DIRECTION_VERTICAL = META_DIRECTION_UP | META_DIRECTION_DOWN,
} MetaDirection;
+/* Tile zones are specified in terms of their constrained edges.
+ * So, "top left corner" is top and left, which should be obvious,
+ * but "left side of the screen" is top, bottom, and left
+ */
+typedef enum {
+ META_TILE_ZONE_MAXIMIZED_HORZ = META_DIRECTION_HORIZONTAL,
+ META_TILE_ZONE_MAXIMIZED_VERT = META_DIRECTION_VERTICAL,
+ META_TILE_ZONE_MAXIMIZED = META_TILE_ZONE_MAXIMIZED_HORZ | META_TILE_ZONE_MAXIMIZED_VERT,
+
+ META_TILE_ZONE_W = META_TILE_ZONE_MAXIMIZED_VERT | META_DIRECTION_LEFT,
+ META_TILE_ZONE_E = META_TILE_ZONE_MAXIMIZED_VERT | META_DIRECTION_RIGHT,
+ META_TILE_ZONE_N = META_TILE_ZONE_MAXIMIZED_HORZ | META_DIRECTION_TOP,
+ META_TILE_ZONE_S = META_TILE_ZONE_MAXIMIZED_HORZ | META_DIRECTION_BOTTOM,
+
+ META_TILE_ZONE_NW = META_DIRECTION_TOP | META_DIRECTION_LEFT,
+ META_TILE_ZONE_NE = META_DIRECTION_TOP | META_DIRECTION_RIGHT,
+ META_TILE_ZONE_SW = META_DIRECTION_BOTTOM | META_DIRECTION_LEFT,
+ META_TILE_ZONE_SE = META_DIRECTION_BOTTOM | META_DIRECTION_RIGHT,
+} MetaTileZone;
+
/**
* MetaMotionDirection:
* @META_MOTION_UP: Upwards motion
diff --git a/src/meta/window.h b/src/meta/window.h
index a3a4b76..a5b8da9 100644
--- a/src/meta/window.h
+++ b/src/meta/window.h
@@ -258,4 +258,7 @@ gboolean meta_window_is_client_decorated (MetaWindow *window);
gboolean meta_window_titlebar_is_onscreen (MetaWindow *window);
void meta_window_shove_titlebar_onscreen (MetaWindow *window);
+void meta_window_tile (MetaWindow *window,
+ MetaTileZone tile_zone);
+
#endif
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