Merge branch 'labwc:master' into adaptive_sync_fs

docs/labwc-config.5.scd

@@ -407,6 +407,11 @@ windows using the mouse.
 	- Left
 	- Middle
 	- Right
+	- Side
+	- Extra
+	- Forward
+	- Back
+	- Task
 
 	Supported scroll *directions* are:
 	- Up
@@ -433,6 +438,57 @@ windows using the mouse.
 	<mouse><mousebind> entries exist, the same default mousebinds will be
 	loaded even if the <default /> element is not provided.
 
+## TABLET
+
+```
+<tablet rotate="0">
+  <area top="0.0" left="0.0" width="0.0" height="0.0">
+  <map button="Tip" to="Left" />
+  <map button="Stylus" to="Right" />
+  <map button="Stylus2" to="Middle" />
+</tablet>
+```
+
+*<tablet><area top="mm" left="mm" width="mm" height="mm" />*
+	By default the complete tablet area is mapped to the full output.
+	The *area* element can be used to truncate the active area of the
+	tablet surface. By truncating the active area, it is e.g. possible
+	to maintain the same aspect ratio between output and tablet.
+
+	The active tablet area can be specified by setting the *top*/*left*
+	coordinate (in mm) and/or *width*/*height* (in mm). If width or
+	height are omitted or default (0.0), width/height will be set to
+	the remaining width/height seen from top/left.
+
+	Aspect ratio example:
+	The dimensions of the tablet are 215mm x 115mm and the output has
+	a resolution of 3440x1440. When setting height to "90", because 
+	215 x 1440 / 3440 = 90, the responsive tablet area height will be
+	truncated to match the 21:9 aspect ratio of the output. By
+	additionally setting top to "12.5", the active area is centered
+	vertically on the tablet surface.
+
+*<tablet rotate="" />* [0|90|180|270]
+	The tablet orientation can be changed in 90 degree steps. Default is
+	no rotation (0). Rotation will be applied after applying tablet area
+	transformation.
+
+*<tablet><map button="" to="" />*
+	Tablet buttons emulate regular mouse buttons. If not specified otherwise,
+	the tip (Tip) is mapped to left mouse click, the first pen button (Stylus)
+	is mapped to right mouse button click and the second pen button (Stylus2)
+	emulates a middle mouse button click.
+
+	Supported map *buttons* are:
+	- Tip
+	- Stylus
+	- Stylus2
+	- Stylus3
+	- Pad
+	- Pad2..Pad9
+
+	See mouse section above for all supported *to* mouse buttons.
+
 ## LIBINPUT
 
 ```

docs/rc.xml.all

@@ -394,25 +394,25 @@
   </mouse>
 
   <!--
-    The active tablet area can be specified by setting the top/left
-    coordinate (in mm) and/or width/height (in mm). If width or height
-    are omitted or default (0.0), width/height will be set to the
-    remaining width/height seen from top/left.
+    The active tablet area can be specified by setting the *top*/*left*
+    coordinate (in mm) and/or *width*/*height* (in mm). If width or
+    height are omitted or default (0.0), width/height will be set to
+    the remaining width/height seen from top/left.
 
     The tablet orientation can be changed in 90 degree steps, thus
-    rotation can be set to [0|90|180|270]. Rotation will be applied
+    *rotate* can be set to [0|90|180|270]. Rotation will be applied
     after applying tablet area transformation.
 
     Tablet buttons emulate regular mouse buttons. The tablet *button* can
-    be set to any of [tip|stylus|stylus2|stylus3|pad|pad2|pad3|..|pad9].
-    Valid *to* mouse buttons are [left|right|middle].
+    be set to any of [Tip|Stylus|Stylus2|Stylus3|Pad|Pad2|Pad3|..|Pad9].
+    Valid *to* mouse buttons are [Left|Right|Middle].
   -->
   <tablet rotate="0">
     <!-- Active area dimensions are in mm -->
     <area top="0.0" left="0.0" width="0.0" height="0.0">
-    <map button="tip" to="left" />
-    <map button="stylus" to="right" />
-    <map button="stylus2" to="middle" />
+    <map button="Tip" to="Left" />
+    <map button="Stylus" to="Right" />
+    <map button="Stylus2" to="Middle" />
   </tablet>
 
   <!--

include/config/tablet.h

@@ -20,7 +20,6 @@ struct button_map_entry {
 double tablet_get_dbl_if_positive(const char *content, const char *name);
 enum rotation tablet_parse_rotation(int value);
 uint32_t tablet_button_from_str(const char *button);
-uint32_t mouse_button_from_str(const char *button);
 void tablet_button_mapping_add(uint32_t from, uint32_t to);
 void tablet_load_default_button_mappings(void);
 

include/view.h

@@ -180,6 +180,13 @@ struct view {
 	 * maximized/fullscreen/tiled.
 	 */
 	struct wlr_box natural_geometry;
+	/*
+	 * Whenever an output layout change triggers a view relocation, the
+	 * last pending position (or natural geometry) will be saved so the
+	 * view may be restored to its original location on a subsequent layout
+	 * change.
+	 */
+	struct wlr_box last_layout_geometry;
 
 	/* used by xdg-shell views */
 	uint32_t pending_configure_serial;
@@ -420,6 +427,7 @@ bool view_is_floating(struct view *view);
 void view_move_to_workspace(struct view *view, struct workspace *workspace);
 void view_set_decorations(struct view *view, bool decorations);
 void view_toggle_fullscreen(struct view *view);
+void view_invalidate_last_layout_geometry(struct view *view);
 void view_adjust_for_layout_change(struct view *view);
 void view_move_to_edge(struct view *view, enum view_edge direction, bool snap_to_windows);
 void view_grow_to_edge(struct view *view, enum view_edge direction);

src/config/mousebind.c

@@ -34,6 +34,16 @@ mousebind_button_from_str(const char *str, uint32_t *modifiers)
 		return BTN_RIGHT;
 	} else if (!strcasecmp(str, "Middle")) {
 		return BTN_MIDDLE;
+	} else if (!strcasecmp(str, "Side")) {
+		return BTN_SIDE;
+	} else if (!strcasecmp(str, "Extra")) {
+		return BTN_EXTRA;
+	} else if (!strcasecmp(str, "Forward")) {
+		return BTN_FORWARD;
+	} else if (!strcasecmp(str, "Back")) {
+		return BTN_BACK;
+	} else if (!strcasecmp(str, "Task")) {
+		return BTN_TASK;
 	}
 invalid:
 	wlr_log(WLR_ERROR, "unknown button (%s)", str);

src/config/rcxml.c

@@ -868,7 +868,7 @@ entry(xmlNode *node, char *nodename, char *content)
 		button_map_from = tablet_button_from_str(content);
 	} else if (!strcasecmp(nodename, "to.map.tablet")) {
 		if (button_map_from != UINT32_MAX) {
-			uint32_t button_map_to = mouse_button_from_str(content);
+			uint32_t button_map_to = mousebind_button_from_str(content, NULL);
 			if (button_map_to != UINT32_MAX) {
 				tablet_button_mapping_add(button_map_from, button_map_to);
 			}

src/config/tablet.c

@@ -72,20 +72,6 @@ tablet_button_from_str(const char *button)
 	return UINT32_MAX;
 }
 
-uint32_t
-mouse_button_from_str(const char *button)
-{
-	if (!strcasecmp(button, "Left")) {
-		return BTN_LEFT;
-	} else if (!strcasecmp(button, "Right")) {
-		return BTN_RIGHT;
-	} else if (!strcasecmp(button, "Middle")) {
-		return BTN_MIDDLE;
-	}
-	wlr_log(WLR_ERROR, "Invalid value for mouse button: %s", button);
-	return UINT32_MAX;
-}
-
 void
 tablet_button_mapping_add(uint32_t from, uint32_t to)
 {

src/interactive.c

@@ -70,6 +70,7 @@ interactive_begin(struct view *view, enum input_mode mode, uint32_t edges)
 		} else {
 			/* Store natural geometry at start of move */
 			view_store_natural_geometry(view);
+			view_invalidate_last_layout_geometry(view);
 		}
 
 		/* Prevent region snapping when just moving via A-Left mousebind */
@@ -86,6 +87,13 @@ interactive_begin(struct view *view, enum input_mode mode, uint32_t edges)
 			 */
 			return;
 		}
+
+		/*
+		 * Resizing overrides any attempt to restore window
+		 * geometries altered by layout changes.
+		 */
+		view_invalidate_last_layout_geometry(view);
+
 		/*
 		 * If tiled or maximized in only one direction, reset
 		 * tiled/maximized state but keep the same geometry as

src/view.c

@@ -252,14 +252,27 @@ view_get_edge_snap_box(struct view *view, struct output *output,
 	return dst;
 }
 
-static void
-view_discover_output(struct view *view)
+static bool
+view_discover_output(struct view *view, struct wlr_box *geometry)
 {
 	assert(view);
 	assert(!view->fullscreen);
-	view->output = output_nearest_to(view->server,
-		view->current.x + view->current.width / 2,
-		view->current.y + view->current.height / 2);
+
+	if (!geometry) {
+		geometry = &view->current;
+	}
+
+	struct output *output =
+		output_nearest_to(view->server,
+			geometry->x + geometry->width / 2,
+			geometry->y + geometry->height / 2);
+
+	if (output && output != view->output) {
+		view->output = output;
+		return true;
+	}
+
+	return false;
 }
 
 static void
@@ -343,7 +356,7 @@ view_moved(struct view *view)
 	 * output when they enter that state.
 	 */
 	if (view_is_floating(view)) {
-		view_discover_output(view);
+		view_discover_output(view, NULL);
 	}
 	ssd_update_geometry(view->ssd);
 	cursor_update_focus(view->server);
@@ -614,11 +627,11 @@ view_adjust_floating_geometry(struct view *view, struct wlr_box *geometry)
 
 	bool adjusted = false;
 	/*
-	 * First check whether the view is onscreen. For now, "onscreen"
-	 * is defined as even one pixel of the client area being visible.
+	 * First check whether the view is the target screen, meaning that at
+	 * least one client pixel is on the screen.
 	 */
 	if (wlr_output_layout_intersects(view->server->output_layout,
-			NULL, geometry)) {
+			view->output->wlr_output, geometry)) {
 		/*
 		 * If onscreen, then make sure the titlebar is also
 		 * visible (and not overlapping any panels/docks)
@@ -988,6 +1001,7 @@ view_maximize(struct view *view, enum view_axis axis,
 		interactive_cancel(view);
 		if (store_natural_geometry && view_is_floating(view)) {
 			view_store_natural_geometry(view);
+			view_invalidate_last_layout_geometry(view);
 		}
 	}
 	set_maximized(view, axis);
@@ -1200,6 +1214,7 @@ view_set_fullscreen(struct view *view, bool fullscreen)
 		 */
 		interactive_cancel(view);
 		view_store_natural_geometry(view);
+		view_invalidate_last_layout_geometry(view);
 	}
 
 	set_fullscreen(view, fullscreen);
@@ -1211,37 +1226,141 @@ view_set_fullscreen(struct view *view, bool fullscreen)
 	set_adaptive_sync_fullscreen(view);
 }
 
+static bool
+last_layout_geometry_is_valid(struct view *view)
+{
+	return view->last_layout_geometry.width > 0
+		&& view->last_layout_geometry.height > 0;
+}
+
+static void
+update_last_layout_geometry(struct view *view)
+{
+	/*
+	 * Only update an invalid last-layout geometry to prevent a series of
+	 * successive layout changes from continually replacing the "preferred"
+	 * location with whatever location the view currently holds. The
+	 * "preferred" location should be whatever state was set by user
+	 * interaction, not automatic responses to layout changes.
+	 */
+	if (last_layout_geometry_is_valid(view)) {
+		return;
+	}
+
+	if (view_is_floating(view)) {
+		view->last_layout_geometry = view->pending;
+	} else {
+		view->last_layout_geometry = view->natural_geometry;
+	}
+}
+
+static bool
+apply_last_layout_geometry(struct view *view, bool force_update)
+{
+	/* Only apply a valid last-layout geometry */
+	if (!last_layout_geometry_is_valid(view)) {
+		return false;
+	}
+
+	/*
+	 * Unless forced, the last-layout geometry is only applied
+	 * when the relevant view geometry is distinct.
+	 */
+	if (!force_update) {
+		struct wlr_box *relevant = view_is_floating(view) ?
+			&view->pending : &view->natural_geometry;
+
+		if (wlr_box_equal(relevant, &view->last_layout_geometry)) {
+			return false;
+		}
+	}
+
+	view->natural_geometry = view->last_layout_geometry;
+	view_adjust_floating_geometry(view, &view->natural_geometry);
+	return true;
+}
+
+void
+view_invalidate_last_layout_geometry(struct view *view)
+{
+	assert(view);
+	view->last_layout_geometry.width = 0;
+	view->last_layout_geometry.height = 0;
+}
+
 void
 view_adjust_for_layout_change(struct view *view)
 {
 	assert(view);
 
-	/* Exit fullscreen if output is lost */
 	bool was_fullscreen = view->fullscreen;
-	if (was_fullscreen && !output_is_usable(view->output)) {
-		set_fullscreen(view, false);
+	bool is_floating = view_is_floating(view);
+
+	if (!output_is_usable(view->output)) {
+		/* A view losing an output should have a last-layout geometry */
+		update_last_layout_geometry(view);
+
+		/* Exit fullscreen and re-assess floating status */
+		if (was_fullscreen) {
+			set_fullscreen(view, false);
+			is_floating = view_is_floating(view);
+		}
+	}
+
+	/* Restore any full-screen window to natural geometry */
+	bool use_natural = was_fullscreen;
+
+	/* Capture a pointer to the last-layout geometry (only if valid) */
+	struct wlr_box *last_geometry = NULL;
+	if (last_layout_geometry_is_valid(view)) {
+		last_geometry = &view->last_layout_geometry;
 	}
 
 	/*
-	 * Floating views are always assigned to the nearest output.
-	 * Maximized/tiled views remain on the same output if possible.
+	 * Check if an output change is required:
+	 * - Floating views are always mapped to the nearest output
+	 * - Any view without a usable output needs to be repositioned
+	 * - Any view with a valid last-layout geometry might be better
+	 *   positioned on another output
 	 */
-	bool is_floating = view_is_floating(view);
-	if (is_floating || !output_is_usable(view->output)) {
-		view_discover_output(view);
+	if (is_floating || last_geometry || !output_is_usable(view->output)) {
+		/* Move the view to an appropriate output, if needed */
+		bool output_changed = view_discover_output(view, last_geometry);
+
+		/*
+		 * Try to apply the last-layout to the natural geometry
+		 * (adjusting to ensure that it fits on the screen). This is
+		 * forced if the output has changed, but will be done
+		 * opportunistically even on the same output if the last-layout
+		 * geometry is different from the view's governing geometry.
+		 */
+		if (apply_last_layout_geometry(view, output_changed)) {
+			use_natural = true;
+		}
+
+		/*
+		 * Whether or not the view has moved, the layout has changed.
+		 * Ensure that the view now has a valid last-layout geometry.
+		 */
+		update_last_layout_geometry(view);
 	}
 
 	if (!is_floating) {
 		view_apply_special_geometry(view);
-	} else if (was_fullscreen) {
+	} else if (use_natural) {
+		/*
+		 * Move the window to its natural location, either because it
+		 * was fullscreen or we are trying to restore a prior layout.
+		 */
 		view_apply_natural_geometry(view);
 	} else {
-		/* reposition view if it's offscreen */
+		/* Otherwise, just ensure the view is on screen. */
 		struct wlr_box geometry = view->pending;
 		if (view_adjust_floating_geometry(view, &geometry)) {
 			view_move_resize(view, geometry);
 		}
 	}
+
 	if (view->toplevel.handle) {
 		foreign_toplevel_update_outputs(view);
 	}
@@ -1542,6 +1661,7 @@ view_snap_to_edge(struct view *view, enum view_edge edge,
 	} else if (store_natural_geometry) {
 		/* store current geometry as new natural_geometry */
 		view_store_natural_geometry(view);
+		view_invalidate_last_layout_geometry(view);
 	}
 	view_set_untiled(view);
 	view_set_output(view, output);
@@ -1571,6 +1691,7 @@ view_snap_to_region(struct view *view, struct region *region,
 	} else if (store_natural_geometry) {
 		/* store current geometry as new natural_geometry */
 		view_store_natural_geometry(view);
+		view_invalidate_last_layout_geometry(view);
 	}
 	view_set_untiled(view);
 	view->tiled_region = region;