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