1/* swc: libswc/pointer.h
  2 *
  3 * Copyright (c) 2013, 2014 Michael Forney
  4 *
  5 * Permission is hereby granted, free of charge, to any person obtaining a copy
  6 * of this software and associated documentation files (the "Software"), to deal
  7 * in the Software without restriction, including without limitation the rights
  8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9 * copies of the Software, and to permit persons to whom the Software is
 10 * furnished to do so, subject to the following conditions:
 11 *
 12 * The above copyright notice and this permission notice shall be included in
 13 * all copies or substantial portions of the Software.
 14 *
 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 21 * SOFTWARE.
 22 */
 23
 24#ifndef SWC_POINTER_H
 25#define SWC_POINTER_H
 26
 27#include "input.h"
 28#include "view.h"
 29
 30#include <pixman.h>
 31#include <wayland-server.h>
 32
 33struct button {
 34	struct press press;
 35	struct pointer_handler *handler;
 36};
 37
 38struct pointer_handler {
 39	bool (*motion)(struct pointer_handler *handler, uint32_t time, wl_fixed_t x,
 40	               wl_fixed_t y);
 41	bool (*button)(struct pointer_handler *handler, uint32_t time,
 42	               struct button *button, uint32_t state);
 43	bool (*axis)(struct pointer_handler *handler, uint32_t time,
 44	             enum wl_pointer_axis axis, enum wl_pointer_axis_source source,
 45	             wl_fixed_t value, int value120);
 46	void (*frame)(struct pointer_handler *handler);
 47
 48	int pending;
 49	struct wl_list link;
 50};
 51
 52struct pointer {
 53	struct input_focus focus;
 54	struct input_focus_handler focus_handler;
 55
 56	struct {
 57		struct view view;
 58		struct surface *surface;
 59		struct wl_listener destroy_listener;
 60		struct wld_buffer *buffer;
 61
 62		/* Used for cursors set with pointer_set_cursor */
 63		struct wld_buffer *internal_buffer;
 64
 65		struct {
 66			int32_t x, y;
 67		} hotspot;
 68	} cursor;
 69
 70	struct wl_array buttons;
 71	struct wl_list handlers;
 72	struct pointer_handler client_handler;
 73	enum wl_pointer_axis_source client_axis_source;
 74
 75	wl_fixed_t x, y;
 76	pixman_region32_t region;
 77};
 78
 79bool
 80pointer_initialize(struct pointer *pointer);
 81void
 82pointer_finalize(struct pointer *pointer);
 83void
 84pointer_set_focus(struct pointer *pointer, struct compositor_view *view);
 85void
 86pointer_set_region(struct pointer *pointer, pixman_region32_t *region);
 87void
 88pointer_set_cursor(struct pointer *pointer, uint32_t id);
 89
 90struct button *
 91pointer_get_button(struct pointer *pointer, uint32_t serial);
 92
 93struct wl_resource *
 94pointer_bind(struct pointer *pointer, struct wl_client *client,
 95             uint32_t version, uint32_t id);
 96void
 97pointer_handle_button(struct pointer *pointer, uint32_t time, uint32_t button,
 98                      uint32_t state);
 99void
100pointer_handle_axis(struct pointer *pointer, uint32_t time,
101                    enum wl_pointer_axis axis,
102                    enum wl_pointer_axis_source source, wl_fixed_t value,
103                    int value120);
104void
105pointer_handle_relative_motion(struct pointer *pointer, uint32_t time,
106                               wl_fixed_t dx, wl_fixed_t dy);
107void
108pointer_handle_absolute_motion(struct pointer *pointer, uint32_t time,
109                               wl_fixed_t x, wl_fixed_t y);
110void
111pointer_handle_frame(struct pointer *pointer);
112
113#endif