Move input related source files into src/input/

include/input/cursor.h

@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef LABWC_CURSOR_H
+#define LABWC_CURSOR_H
+
+#include <wlr/types/wlr_cursor.h>
+#include <wlr/util/edges.h>
+#include "ssd.h"
+
+struct view;
+struct seat;
+struct server;
+struct wlr_surface;
+struct wlr_scene_node;
+
+/* Cursors used internally by labwc */
+enum lab_cursors {
+	LAB_CURSOR_CLIENT = 0,
+	LAB_CURSOR_DEFAULT,
+	LAB_CURSOR_GRAB,
+	LAB_CURSOR_RESIZE_NW,
+	LAB_CURSOR_RESIZE_N,
+	LAB_CURSOR_RESIZE_NE,
+	LAB_CURSOR_RESIZE_E,
+	LAB_CURSOR_RESIZE_SE,
+	LAB_CURSOR_RESIZE_S,
+	LAB_CURSOR_RESIZE_SW,
+	LAB_CURSOR_RESIZE_W,
+	LAB_CURSOR_COUNT
+};
+
+struct cursor_context {
+	struct view *view;
+	struct wlr_scene_node *node;
+	struct wlr_surface *surface;
+	enum ssd_part_type type;
+	double sx, sy;
+};
+
+/**
+ * get_cursor_context - find view and scene_node at cursor
+ *
+ * Behavior if node points to a surface:
+ *  - If surface is a layer-surface, type will be
+ *    set to LAB_SSD_LAYER_SURFACE and view will be NULL.
+ *
+ *  - If surface is a 'lost' unmanaged xsurface (one
+ *    with a never-mapped parent view), type will
+ *    be set to LAB_SSD_UNMANAGED and view will be NULL.
+ *
+ *    'Lost' unmanaged xsurfaces are usually caused by
+ *    X11 applications opening popups without setting
+ *    the main window as parent. Example: VLC submenus.
+ *
+ *  - Any other surface will cause type to be set to
+ *    LAB_SSD_CLIENT and return the attached view.
+ *
+ * Behavior if node points to internal elements:
+ *  - type will be set to the appropriate enum value
+ *    and view will be NULL if the node is not part of the SSD.
+ *
+ * If no node is found for the given layout coordinates,
+ * type will be set to LAB_SSD_ROOT and view will be NULL.
+ *
+ */
+struct cursor_context get_cursor_context(struct server *server);
+
+/**
+ * cursor_set - set cursor icon
+ * @seat - current seat
+ * @cursor - name of cursor, for example LAB_CURSOR_DEFAULT or LAB_CURSOR_GRAB
+ */
+void cursor_set(struct seat *seat, enum lab_cursors cursor);
+
+/**
+ * cursor_get_resize_edges - calculate resize edge based on cursor position
+ * @cursor - the current cursor (usually server->seat.cursor)
+ * @cursor_context - result of get_cursor_context()
+ *
+ * Calculates the resize edge combination that is most appropriate based
+ * on the current view and cursor position in relation to each other.
+ *
+ * This is mostly important when either resizing a window using a
+ * keyboard modifier or when using the Resize action from a keybind.
+ */
+uint32_t cursor_get_resize_edges(struct wlr_cursor *cursor,
+	struct cursor_context *ctx);
+
+/**
+ * cursor_get_from_edge - translate wlroots edge enum to lab_cursor enum
+ * @resize_edges - WLR_EDGE_ combination like WLR_EDGE_TOP | WLR_EDGE_RIGHT
+ *
+ * Returns LAB_CURSOR_DEFAULT on WLR_EDGE_NONE
+ * Returns the appropriate lab_cursors enum if @resize_edges
+ * is one of the 4 corners or one of the 4 edges.
+ *
+ * Asserts on invalid edge combinations like WLR_EDGE_LEFT | WLR_EDGE_RIGHT
+ */
+enum lab_cursors cursor_get_from_edge(uint32_t resize_edges);
+
+/**
+ * cursor_update_focus - update cursor focus, may update the cursor icon
+ * @server - server
+ *
+ * This can be used to give the mouse focus to the surface under the cursor
+ * or to force an update of the cursor icon by sending an exit and enter
+ * event to an already focused surface.
+ */
+void cursor_update_focus(struct server *server);
+
+/**
+ * cursor_update_image - re-set the labwc cursor image
+ * @seat - seat
+ *
+ * This can be used to update the cursor image on output scale changes.
+ * If the current cursor image was not set by labwc but some client
+ * this is a no-op.
+ */
+void cursor_update_image(struct seat *seat);
+
+void cursor_init(struct seat *seat);
+void cursor_finish(struct seat *seat);
+
+#endif /* LABWC_CURSOR_H */