2 * Copyright © 2011 Tim Wiederhake
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
25 * \brief Demonstrate the use of Wayland's toytoolkit.
27 * Heavily commented demo program that can report all events that are
28 * dispatched to the window. For other functionality, eg. opengl/egl,
29 * drag and drop, etc. have a look at the other demos.
30 * \author Tim Wiederhake
41 static char *title = "EventDemo";
44 static int width = 500;
47 static int height = 400;
49 /** set if window has no borders */
50 static int noborder = 0;
52 /** if non-zero, maximum window width */
53 static int width_max = 0;
55 /** if non-zero, maximum window height */
56 static int height_max = 0;
58 /** set to log redrawing */
59 static int log_redraw = 0;
61 /** set to log resizing */
62 static int log_resize = 0;
64 /** set to log keyboard focus */
65 static int log_focus = 0;
67 /** set to log key events */
68 static int log_key = 0;
70 /** set to log button events */
71 static int log_button = 0;
73 /** set to log axis events */
74 static int log_axis = 0;
76 /** set to log motion events */
77 static int log_motion = 0;
81 * \brief Holds all data the program needs per window
83 * In this demo the struct holds the position of a
84 * red rectangle that is drawn in the window's area.
87 struct window *window;
88 struct widget *widget;
89 struct display *display;
95 * \brief CALLBACK function, Wayland requests the window to redraw.
96 * \param widget widget to be redrawn
97 * \param data user data associated to the window
99 * Draws a red rectangle as demonstration of per-window data.
102 redraw_handler(struct widget *widget, void *data)
104 struct eventdemo *e = data;
105 cairo_surface_t *surface;
107 struct rectangle rect;
112 widget_get_allocation(e->widget, &rect);
113 surface = window_get_surface(e->window);
115 cr = cairo_create(surface);
116 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
118 cairo_rectangle(cr, rect.x, rect.y, rect.width, rect.height);
119 cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
122 cairo_rectangle(cr, e->x, e->y, e->w, e->h);
123 cairo_set_source_rgba(cr, 1.0, 0, 0, 1);
127 cairo_surface_destroy(surface);
131 * \brief CALLBACK function, Wayland requests the window to resize.
132 * \param widget widget to be resized
133 * \param width desired width
134 * \param height desired height
135 * \param data user data associated to the window
139 resize_handler(struct widget *widget,
140 int32_t width, int32_t height, void *data)
142 struct eventdemo *e = data;
144 printf("resize width: %d, height: %d\n", width, height);
146 /* if a maximum width is set, constrain to it */
147 if (width_max && width_max < width)
150 /* if a maximum height is set, constrain to it */
151 if (height_max && height_max < height)
154 /* set the new window dimensions */
155 widget_set_size(e->widget, width, height);
159 * \brief CALLBACK function, Wayland informs about keyboard focus change
160 * \param window window
161 * \param device device that caused the focus change
162 * \param data user data associated to the window
165 keyboard_focus_handler(struct window *window,
166 struct input *device, void *data)
169 struct eventdemo *e = data;
173 input_get_position(device, &x, &y);
174 printf("focus x: %d, y: %d\n", x, y);
176 printf("focus lost\n");
180 window_schedule_redraw(e->window);
184 * \brief CALLBACK function, Wayland informs about key event
185 * \param window window
187 * \param unicode associated character
188 * \param state pressed or released
189 * \param modifiers modifiers: ctrl, alt, meta etc.
190 * \param data user data associated to the window
193 key_handler(struct window *window, struct input *input, uint32_t time,
194 uint32_t key, uint32_t unicode, enum wl_keyboard_key_state state,
197 uint32_t modifiers = input_get_modifiers(input);
202 printf("key key: %d, unicode: %d, state: %s, modifiers: 0x%x\n",
204 (state == WL_KEYBOARD_KEY_STATE_PRESSED) ? "pressed" :
210 * \brief CALLBACK function, Wayland informs about button event
211 * \param widget widget
212 * \param input input device that caused the button event
213 * \param time time the event happened
214 * \param button button
215 * \param state pressed or released
216 * \param data user data associated to the window
219 button_handler(struct widget *widget, struct input *input, uint32_t time,
220 uint32_t button, enum wl_pointer_button_state state, void *data)
227 input_get_position(input, &x, &y);
228 printf("button time: %d, button: %d, state: %s, x: %d, y: %d\n",
230 (state == WL_POINTER_BUTTON_STATE_PRESSED) ? "pressed" :
236 * \brief CALLBACK function, Wayland informs about axis event
237 * \param widget widget
238 * \param input input device that caused the axis event
239 * \param time time the event happened
240 * \param axis vertical or horizontal
241 * \param value amount of scrolling
242 * \param data user data associated to the widget
245 axis_handler(struct widget *widget, struct input *input, uint32_t time,
246 uint32_t axis, wl_fixed_t value, void *data)
251 printf("axis time: %d, axis: %s, value: %f\n",
253 axis == WL_POINTER_AXIS_VERTICAL_SCROLL ? "vertical" :
255 wl_fixed_to_double(value));
259 * \brief CALLBACK function, Waylands informs about pointer motion
260 * \param widget widget
261 * \param input input device that caused the motion event
262 * \param time time the event happened
263 * \param x absolute x position
264 * \param y absolute y position
265 * \param sx x position relative to the window
266 * \param sy y position relative to the window
267 * \param data user data associated to the window
269 * Demonstrates the use of different cursors
272 motion_handler(struct widget *widget, struct input *input, uint32_t time,
273 float x, float y, void *data)
275 struct eventdemo *e = data;
278 printf("motion time: %d, x: %f, y: %f\n", time, x, y);
281 if (x > e->x && x < e->x + e->w)
282 if (y > e->y && y < e->y + e->h)
285 return CURSOR_LEFT_PTR;
289 * \brief Create and initialise a new eventdemo window.
290 * The returned eventdemo instance should be destroyed using \c eventdemo_destroy().
291 * \param d associated display
293 static struct eventdemo *
294 eventdemo_create(struct display *d)
298 e = malloc(sizeof (struct eventdemo));
302 e->window = window_create(d);
305 /* Demonstrate how to create a borderless window.
306 * Move windows with META + left mouse button.
308 e->widget = window_add_widget(e->window, e);
310 e->widget = frame_create(e->window, e);
311 window_set_title(e->window, title);
315 /* The eventdemo window draws a red rectangle as a demonstration
316 * of per-window data. The dimensions of that rectangle are set
319 e->x = width * 1.0 / 4.0;
320 e->w = width * 2.0 / 4.0;
321 e->y = height * 1.0 / 4.0;
322 e->h = height * 2.0 / 4.0;
324 /* Connect the user data to the window */
325 window_set_user_data(e->window, e);
327 /* Set the callback redraw handler for the window */
328 widget_set_redraw_handler(e->widget, redraw_handler);
330 /* Set the callback resize handler for the window */
331 widget_set_resize_handler(e->widget, resize_handler);
333 /* Set the callback focus handler for the window */
334 window_set_keyboard_focus_handler(e->window,
335 keyboard_focus_handler);
337 /* Set the callback key handler for the window */
338 window_set_key_handler(e->window, key_handler);
340 /* Set the callback button handler for the window */
341 widget_set_button_handler(e->widget, button_handler);
343 /* Set the callback motion handler for the window */
344 widget_set_motion_handler(e->widget, motion_handler);
346 /* Set the callback axis handler for the window */
347 widget_set_axis_handler(e->widget, axis_handler);
349 /* Initial drawing of the window */
350 window_schedule_resize(e->window, width, height);
355 * \brief Destroy eventdemo instance previously created by \c eventdemo_create().
356 * \param eventdemo eventdemo instance to destroy
358 static void eventdemo_destroy(struct eventdemo * eventdemo)
360 widget_destroy(eventdemo->widget);
361 window_destroy(eventdemo->window);
365 * \brief command line options for eventdemo
367 static const struct weston_option eventdemo_options[] = {
368 { WESTON_OPTION_STRING, "title", 0, &title },
369 { WESTON_OPTION_INTEGER, "width", 'w', &width },
370 { WESTON_OPTION_INTEGER, "height", 'h', &height },
371 { WESTON_OPTION_INTEGER, "max-width", 0, &width_max },
372 { WESTON_OPTION_INTEGER, "max-height", 0, &height_max },
373 { WESTON_OPTION_BOOLEAN, "no-border", 'b', &noborder },
374 { WESTON_OPTION_BOOLEAN, "log-redraw", '0', &log_redraw },
375 { WESTON_OPTION_BOOLEAN, "log-resize", '0', &log_resize },
376 { WESTON_OPTION_BOOLEAN, "log-focus", '0', &log_focus },
377 { WESTON_OPTION_BOOLEAN, "log-key", '0', &log_key },
378 { WESTON_OPTION_BOOLEAN, "log-button", '0', &log_button },
379 { WESTON_OPTION_BOOLEAN, "log-axis", '0', &log_axis },
380 { WESTON_OPTION_BOOLEAN, "log-motion", '0', &log_motion },
384 * \brief Connects to the display, creates the window and hands over
388 main(int argc, char *argv[])
393 argc = parse_options(eventdemo_options,
394 ARRAY_LENGTH(eventdemo_options), argc, argv);
396 /* Connect to the display and have the arguments parsed */
397 d = display_create(argc, argv);
399 fprintf(stderr, "failed to create display: %m\n");
403 /* Create new eventdemo window */
404 e = eventdemo_create(d);
406 fprintf(stderr, "failed to create eventdemo: %m\n");
412 /* Release resources */
413 eventdemo_destroy(e);