blob: 19cc243c5df014c34c09bd5a60f446dde1930b74 [file] [log] [blame]
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -04001/*
2 * Copyright © 2010 Kristian Høgsberg
3 *
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.
13 *
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
20 * OF THIS SOFTWARE.
21 */
22
Philipp Brüschweilerf22d0ec2012-08-13 20:04:54 +020023#include <assert.h>
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040024#include <stdint.h>
25#include <stdio.h>
26#include <stdlib.h>
27#include <string.h>
28#include <fcntl.h>
29#include <unistd.h>
30#include <math.h>
31#include <sys/time.h>
32#include <cairo.h>
Kristian Høgsberg3a696272011-09-14 17:33:48 -040033#include <sys/epoll.h>
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040034
Pekka Paalanen50719bc2011-11-22 14:18:50 +020035#include <wayland-client.h>
Ander Conselvan de Oliveira1042dc12012-05-22 15:39:42 +030036#include <wayland-cursor.h>
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040037
38#include "window.h"
Kristian Høgsberg5a315bc2012-05-15 22:33:43 -040039#include "../shared/cairo-util.h"
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040040
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +030041struct dnd_drag;
42
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040043struct dnd {
44 struct window *window;
Kristian Høgsberg75bc6672012-01-10 09:43:58 -050045 struct widget *widget;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040046 struct display *display;
47 uint32_t key;
48 struct item *items[16];
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +030049 int self_only;
50 struct dnd_drag *current_drag;
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -040051};
Kristian Høgsberg1d7ffd32010-08-25 16:34:05 -040052
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -040053struct dnd_drag {
54 cairo_surface_t *translucent;
55 cairo_surface_t *opaque;
Kristian Høgsberg1d7ffd32010-08-25 16:34:05 -040056 int hotspot_x, hotspot_y;
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -040057 struct dnd *dnd;
58 struct input *input;
Kristian Høgsbergce457ba2010-09-14 15:39:45 -040059 uint32_t time;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -080060 struct item *item;
61 int x_offset, y_offset;
Kristian Høgsberg679f7162012-03-27 16:44:57 -040062 int width, height;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -080063 const char *mime_type;
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -040064
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +020065 struct wl_surface *drag_surface;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -040066 struct wl_data_source *data_source;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040067};
68
69struct item {
70 cairo_surface_t *surface;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -080071 int seed;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040072 int x, y;
73};
74
Joel Teichroeb0c007ae2010-11-30 10:22:16 -080075struct dnd_flower_message {
76 int seed, x_offset, y_offset;
77};
78
79
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040080static const int item_width = 64;
81static const int item_height = 64;
82static const int item_padding = 16;
83
Kristian Høgsberg938f1022013-09-04 19:36:49 -070084static const char flower_mime_type[] = "application/x-wayland-dnd-flower";
Kristian Høgsberg735bda22013-09-09 15:03:27 -070085static const char text_mime_type[] = "text/plain;charset=utf-8";
Kristian Høgsberg938f1022013-09-04 19:36:49 -070086
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040087static struct item *
Joel Teichroeb0c007ae2010-11-30 10:22:16 -080088item_create(struct display *display, int x, int y, int seed)
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -040089{
Joel Teichroeb0c007ae2010-11-30 10:22:16 -080090 struct item *item;
91 struct timeval tv;
92
93 item = malloc(sizeof *item);
94 if (item == NULL)
95 return NULL;
96
97
98 gettimeofday(&tv, NULL);
99 item->seed = seed ? seed : tv.tv_usec;
100 srandom(item->seed);
101
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400102 const int petal_count = 3 + random() % 5;
103 const double r1 = 20 + random() % 10;
104 const double r2 = 5 + random() % 12;
105 const double u = (10 + random() % 90) / 100.0;
106 const double v = (random() % 90) / 100.0;
107
108 cairo_t *cr;
109 int i;
110 double t, dt = 2 * M_PI / (petal_count * 2);
111 double x1, y1, x2, y2, x3, y3;
112 struct rectangle rect;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400113
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400114
115 rect.width = item_width;
116 rect.height = item_height;
Ander Conselvan de Oliveira210eb9d2012-05-25 16:03:06 +0300117 item->surface =
118 display_create_surface(display, NULL, &rect, SURFACE_SHM);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400119
120 item->x = x;
121 item->y = y;
122
123 cr = cairo_create(item->surface);
124 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
125 cairo_set_source_rgba(cr, 0, 0, 0, 0);
126 cairo_paint(cr);
127
128 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
129 cairo_translate(cr, item_width / 2, item_height / 2);
130 t = random();
131 cairo_move_to(cr, cos(t) * r1, sin(t) * r1);
132 for (i = 0; i < petal_count; i++, t += dt * 2) {
133 x1 = cos(t) * r1;
134 y1 = sin(t) * r1;
135 x2 = cos(t + dt) * r2;
136 y2 = sin(t + dt) * r2;
137 x3 = cos(t + 2 * dt) * r1;
138 y3 = sin(t + 2 * dt) * r1;
139
140 cairo_curve_to(cr,
141 x1 - y1 * u, y1 + x1 * u,
142 x2 + y2 * v, y2 - x2 * v,
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400143 x2, y2);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400144
145 cairo_curve_to(cr,
146 x2 - y2 * v, y2 + x2 * v,
147 x3 + y3 * u, y3 - x3 * u,
148 x3, y3);
149 }
150
151 cairo_close_path(cr);
152
153 cairo_set_source_rgba(cr,
154 0.5 + (random() % 50) / 49.0,
155 0.5 + (random() % 50) / 49.0,
156 0.5 + (random() % 50) / 49.0,
157 0.5 + (random() % 100) / 99.0);
158
159 cairo_fill_preserve(cr);
160
161 cairo_set_line_width(cr, 1);
162 cairo_set_source_rgba(cr,
163 0.5 + (random() % 50) / 49.0,
164 0.5 + (random() % 50) / 49.0,
165 0.5 + (random() % 50) / 49.0,
166 0.5 + (random() % 100) / 99.0);
167 cairo_stroke(cr);
168
169 cairo_destroy(cr);
170
171 return item;
172}
173
174static void
Kristian Høgsbergb67e94b2012-01-10 12:23:19 -0500175dnd_redraw_handler(struct widget *widget, void *data)
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400176{
Kristian Høgsbergb67e94b2012-01-10 12:23:19 -0500177 struct dnd *dnd = data;
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500178 struct rectangle allocation;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400179 cairo_t *cr;
Kristian Høgsberge164e4e2011-01-21 11:35:05 -0500180 cairo_surface_t *surface;
Kristian Høgsberg875ab9e2012-03-30 11:52:39 -0400181 unsigned int i;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400182
Kristian Høgsberge164e4e2011-01-21 11:35:05 -0500183 surface = window_get_surface(dnd->window);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400184 cr = cairo_create(surface);
Kristian Høgsbergbb977002012-01-10 19:11:42 -0500185 widget_get_allocation(dnd->widget, &allocation);
Kristian Høgsberge164e4e2011-01-21 11:35:05 -0500186 cairo_rectangle(cr, allocation.x, allocation.y,
187 allocation.width, allocation.height);
Kristian Høgsberge164e4e2011-01-21 11:35:05 -0500188
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400189 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
190 cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400191 cairo_fill(cr);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400192
Kristian Høgsberg0fd49aa2012-07-23 21:32:46 -0400193 cairo_rectangle(cr, allocation.x, allocation.y,
194 allocation.width, allocation.height);
195 cairo_clip(cr);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400196 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
197 for (i = 0; i < ARRAY_LENGTH(dnd->items); i++) {
198 if (!dnd->items[i])
199 continue;
200 cairo_set_source_surface(cr, dnd->items[i]->surface,
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400201 dnd->items[i]->x + allocation.x,
202 dnd->items[i]->y + allocation.y);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400203 cairo_paint(cr);
204 }
205
206 cairo_destroy(cr);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400207 cairo_surface_destroy(surface);
208}
209
210static void
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400211keyboard_focus_handler(struct window *window,
212 struct input *device, void *data)
213{
214 struct dnd *dnd = data;
215
216 window_schedule_redraw(dnd->window);
217}
218
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800219static int
220dnd_add_item(struct dnd *dnd, struct item *item)
221{
Kristian Høgsberg875ab9e2012-03-30 11:52:39 -0400222 unsigned int i;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800223
224 for (i = 0; i < ARRAY_LENGTH(dnd->items); i++) {
225 if (dnd->items[i] == 0) {
226 dnd->items[i] = item;
227 return i;
228 }
229 }
230 return -1;
231}
232
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400233static struct item *
234dnd_get_item(struct dnd *dnd, int32_t x, int32_t y)
235{
236 struct item *item;
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500237 struct rectangle allocation;
Kristian Høgsberg875ab9e2012-03-30 11:52:39 -0400238 unsigned int i;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400239
Kristian Høgsbergbb977002012-01-10 19:11:42 -0500240 widget_get_allocation(dnd->widget, &allocation);
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400241
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500242 x -= allocation.x;
243 y -= allocation.y;
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400244
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400245 for (i = 0; i < ARRAY_LENGTH(dnd->items); i++) {
246 item = dnd->items[i];
247 if (item &&
248 item->x <= x && x < item->x + item_width &&
249 item->y <= y && y < item->y + item_height)
250 return item;
251 }
252
253 return NULL;
254}
255
256static void
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400257data_source_target(void *data,
258 struct wl_data_source *source, const char *mime_type)
Kristian Høgsberg506e20e2010-08-19 17:26:02 -0400259{
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400260 struct dnd_drag *dnd_drag = data;
261 struct dnd *dnd = dnd_drag->dnd;
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400262 cairo_surface_t *surface;
263 struct wl_buffer *buffer;
Kristian Høgsberg1d7ffd32010-08-25 16:34:05 -0400264
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800265 dnd_drag->mime_type = mime_type;
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400266 if (mime_type)
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400267 surface = dnd_drag->opaque;
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400268 else
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400269 surface = dnd_drag->translucent;
270
271 buffer = display_get_buffer_for_surface(dnd->display, surface);
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200272 wl_surface_attach(dnd_drag->drag_surface, buffer, 0, 0);
Kristian Høgsberg679f7162012-03-27 16:44:57 -0400273 wl_surface_damage(dnd_drag->drag_surface, 0, 0,
274 dnd_drag->width, dnd_drag->height);
Pekka Paalanenc9e00c02012-10-10 12:49:24 +0300275 wl_surface_commit(dnd_drag->drag_surface);
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400276}
277
278static void
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400279data_source_send(void *data, struct wl_data_source *source,
280 const char *mime_type, int32_t fd)
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400281{
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800282 struct dnd_flower_message dnd_flower_message;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400283 struct dnd_drag *dnd_drag = data;
Kristian Høgsberg735bda22013-09-09 15:03:27 -0700284 char buffer[128];
285 int n;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800286
Kristian Høgsberg735bda22013-09-09 15:03:27 -0700287 if (strcmp(mime_type, flower_mime_type) == 0) {
288 dnd_flower_message.seed = dnd_drag->item->seed;
289 dnd_flower_message.x_offset = dnd_drag->x_offset;
290 dnd_flower_message.y_offset = dnd_drag->y_offset;
291
292 if (write(fd, &dnd_flower_message,
293 sizeof dnd_flower_message) < 0)
294 abort();
295 } else if (strcmp(mime_type, text_mime_type) == 0) {
296 n = snprintf(buffer, sizeof buffer, "seed=%d x=%d y=%d\n",
297 dnd_drag->item->seed,
298 dnd_drag->x_offset,
299 dnd_drag->y_offset);
300
301 if (write(fd, buffer, n) < 0)
302 abort();
303 }
Jonas Ådahl3685c3a2012-03-30 23:10:27 +0200304
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400305 close(fd);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400306}
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400307
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400308static void
309data_source_cancelled(void *data, struct wl_data_source *source)
310{
311 struct dnd_drag *dnd_drag = data;
312
313 /* The 'cancelled' event means that the source is no longer in
314 * use by the drag (or current selection). We need to clean
315 * up the drag object created and the local state. */
316
317 wl_data_source_destroy(dnd_drag->data_source);
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800318
319 /* Destroy the item that has been dragged out */
320 cairo_surface_destroy(dnd_drag->item->surface);
321 free(dnd_drag->item);
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200322
323 wl_surface_destroy(dnd_drag->drag_surface);
324
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400325 cairo_surface_destroy(dnd_drag->translucent);
326 cairo_surface_destroy(dnd_drag->opaque);
327 free(dnd_drag);
328}
329
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400330static const struct wl_data_source_listener data_source_listener = {
331 data_source_target,
332 data_source_send,
333 data_source_cancelled
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400334};
335
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400336static cairo_surface_t *
337create_drag_cursor(struct dnd_drag *dnd_drag,
338 struct item *item, int32_t x, int32_t y, double opacity)
339{
340 struct dnd *dnd = dnd_drag->dnd;
Ander Conselvan de Oliveira1042dc12012-05-22 15:39:42 +0300341 cairo_surface_t *surface;
342 struct wl_cursor_image *pointer;
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400343 struct rectangle rectangle;
344 cairo_pattern_t *pattern;
345 cairo_t *cr;
346
Ander Conselvan de Oliveiradc8c8fc2012-05-25 16:01:41 +0300347 pointer = display_get_pointer_image(dnd->display, CURSOR_DRAGGING);
Philipp Brüschweilerf22d0ec2012-08-13 20:04:54 +0200348 if (!pointer) {
349 fprintf(stderr, "WARNING: grabbing cursor image not found\n");
350 pointer = display_get_pointer_image(dnd->display,
351 CURSOR_LEFT_PTR);
352 assert(pointer && "no cursor image found");
353 }
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400354
Ander Conselvan de Oliveira1042dc12012-05-22 15:39:42 +0300355 rectangle.width = item_width + 2 * pointer->width;
356 rectangle.height = item_height + 2 * pointer->height;
Ander Conselvan de Oliveira210eb9d2012-05-25 16:03:06 +0300357 surface = display_create_surface(dnd->display, NULL, &rectangle,
358 SURFACE_SHM);
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400359
360 cr = cairo_create(surface);
Ander Conselvan de Oliveira1042dc12012-05-22 15:39:42 +0300361 cairo_translate(cr, pointer->width, pointer->height);
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400362
363 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
364 cairo_set_source_rgba(cr, 0, 0, 0, 0);
365 cairo_paint(cr);
366
367 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
368 cairo_set_source_surface(cr, item->surface, 0, 0);
369 pattern = cairo_pattern_create_rgba(0, 0, 0, opacity);
370 cairo_mask(cr, pattern);
371 cairo_pattern_destroy(pattern);
372
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400373 /* FIXME: more cairo-gl brokeness */
Benjamin Franzke47eb8f42011-10-07 09:08:56 +0200374 surface_flush_device(surface);
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400375 cairo_destroy(cr);
376
Ander Conselvan de Oliveira1042dc12012-05-22 15:39:42 +0300377 dnd_drag->hotspot_x = pointer->width + x - item->x;
378 dnd_drag->hotspot_y = pointer->height + y - item->y;
Kristian Høgsberg679f7162012-03-27 16:44:57 -0400379 dnd_drag->width = rectangle.width;
380 dnd_drag->height = rectangle.height;
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400381
382 return surface;
383}
384
Kristian Høgsberg506e20e2010-08-19 17:26:02 -0400385static void
Kristian Høgsberga8a0db32012-01-09 11:12:05 -0500386dnd_button_handler(struct widget *widget,
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400387 struct input *input, uint32_t time,
Daniel Stone4dbadb12012-05-30 16:31:51 +0100388 uint32_t button, enum wl_pointer_button_state state,
389 void *data)
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400390{
Kristian Høgsberg75bc6672012-01-10 09:43:58 -0500391 struct dnd *dnd = data;
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400392 int32_t x, y;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400393 struct item *item;
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500394 struct rectangle allocation;
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400395 struct dnd_drag *dnd_drag;
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200396 struct display *display;
397 struct wl_compositor *compositor;
398 struct wl_buffer *buffer;
Kristian Høgsberg875ab9e2012-03-30 11:52:39 -0400399 unsigned int i;
Kristian Høgsbergeae5de72012-04-11 22:42:15 -0400400 uint32_t serial;
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300401 cairo_surface_t *icon;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400402
Kristian Høgsbergbb977002012-01-10 19:11:42 -0500403 widget_get_allocation(dnd->widget, &allocation);
Kristian Høgsberge968f9c2010-08-27 22:18:00 -0400404 input_get_position(input, &x, &y);
405 item = dnd_get_item(dnd, x, y);
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500406 x -= allocation.x;
407 y -= allocation.y;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400408
Daniel Stone4dbadb12012-05-30 16:31:51 +0100409 if (item && state == WL_POINTER_BUTTON_STATE_PRESSED) {
Brian Lovinbc919262013-08-07 15:34:59 -0700410 dnd_drag = xmalloc(sizeof *dnd_drag);
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400411 dnd_drag->dnd = dnd;
412 dnd_drag->input = input;
Kristian Høgsbergce457ba2010-09-14 15:39:45 -0400413 dnd_drag->time = time;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800414 dnd_drag->item = item;
415 dnd_drag->x_offset = x - item->x;
416 dnd_drag->y_offset = y - item->y;
417
418 for (i = 0; i < ARRAY_LENGTH(dnd->items); i++) {
419 if (item == dnd->items[i]){
420 dnd->items[i] = 0;
421 break;
422 }
423 }
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400424
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200425 display = window_get_display(dnd->window);
426 compositor = display_get_compositor(display);
Kristian Høgsbergeae5de72012-04-11 22:42:15 -0400427 serial = display_get_serial(display);
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200428 dnd_drag->drag_surface =
429 wl_compositor_create_surface(compositor);
430
Kristian Høgsberga6c8b002012-04-13 12:55:45 -0400431 input_ungrab(input);
432
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300433 if (dnd->self_only) {
434 dnd_drag->data_source = NULL;
435 } else {
436 dnd_drag->data_source =
437 display_create_data_source(dnd->display);
438 wl_data_source_add_listener(dnd_drag->data_source,
439 &data_source_listener,
440 dnd_drag);
441 wl_data_source_offer(dnd_drag->data_source,
Kristian Høgsberg735bda22013-09-09 15:03:27 -0700442 flower_mime_type);
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300443 wl_data_source_offer(dnd_drag->data_source,
Kristian Høgsberg735bda22013-09-09 15:03:27 -0700444 text_mime_type);
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300445 }
446
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400447 wl_data_device_start_drag(input_get_data_device(input),
448 dnd_drag->data_source,
Kristian Høgsberg75bc6672012-01-10 09:43:58 -0500449 window_get_wl_surface(dnd->window),
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200450 dnd_drag->drag_surface,
Kristian Høgsbergeae5de72012-04-11 22:42:15 -0400451 serial);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400452
Kristian Høgsberg5a4e9ff2012-06-04 16:04:07 -0400453 input_set_pointer_image(input, CURSOR_DRAGGING);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400454
Kristian Høgsberge9d37bd2010-09-02 20:22:42 -0400455 dnd_drag->opaque =
456 create_drag_cursor(dnd_drag, item, x, y, 1);
457 dnd_drag->translucent =
458 create_drag_cursor(dnd_drag, item, x, y, 0.2);
Kristian Høgsberg1d7ffd32010-08-25 16:34:05 -0400459
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300460 if (dnd->self_only)
461 icon = dnd_drag->opaque;
462 else
463 icon = dnd_drag->translucent;
464
465 buffer = display_get_buffer_for_surface(dnd->display, icon);
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200466 wl_surface_attach(dnd_drag->drag_surface, buffer,
467 -dnd_drag->hotspot_x, -dnd_drag->hotspot_y);
Kristian Høgsberg679f7162012-03-27 16:44:57 -0400468 wl_surface_damage(dnd_drag->drag_surface, 0, 0,
469 dnd_drag->width, dnd_drag->height);
Pekka Paalanenc9e00c02012-10-10 12:49:24 +0300470 wl_surface_commit(dnd_drag->drag_surface);
Ander Conselvan de Oliveirae47c3a32012-02-15 17:02:58 +0200471
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300472 dnd->current_drag = dnd_drag;
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800473 window_schedule_redraw(dnd->window);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400474 }
475}
476
477static int
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400478lookup_cursor(struct dnd *dnd, int x, int y)
479{
480 struct item *item;
481
482 item = dnd_get_item(dnd, x, y);
483 if (item)
Ander Conselvan de Oliveiradc8c8fc2012-05-25 16:01:41 +0300484 return CURSOR_HAND1;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400485 else
Ander Conselvan de Oliveiradc8c8fc2012-05-25 16:01:41 +0300486 return CURSOR_LEFT_PTR;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400487}
488
Kristian Høgsbergbb901fa2012-01-09 11:22:32 -0500489static int
Kristian Høgsbergac7619f2012-01-09 09:26:38 -0500490dnd_enter_handler(struct widget *widget,
Kristian Høgsberg80680c72012-05-10 12:21:37 -0400491 struct input *input, float x, float y, void *data)
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400492{
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300493 struct dnd *dnd = data;
494
495 dnd->current_drag = NULL;
496
497 return lookup_cursor(dnd, x, y);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400498}
499
500static int
Kristian Høgsberg5f190ef2012-01-09 09:44:45 -0500501dnd_motion_handler(struct widget *widget,
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400502 struct input *input, uint32_t time,
Kristian Høgsberg80680c72012-05-10 12:21:37 -0400503 float x, float y, void *data)
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400504{
Kristian Høgsberg75bc6672012-01-10 09:43:58 -0500505 return lookup_cursor(data, x, y);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400506}
507
508static void
509dnd_data_handler(struct window *window,
Kristian Høgsbergeae5de72012-04-11 22:42:15 -0400510 struct input *input,
Kristian Høgsberg80680c72012-05-10 12:21:37 -0400511 float x, float y, const char **types, void *data)
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400512{
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400513 struct dnd *dnd = data;
Kristian Høgsberg938f1022013-09-04 19:36:49 -0700514 int i, has_flower = 0;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400515
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300516 if (!types)
517 return;
Kristian Høgsberg938f1022013-09-04 19:36:49 -0700518 for (i = 0; types[i]; i++)
519 if (strcmp(types[i], flower_mime_type) == 0)
520 has_flower = 1;
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300521
Kristian Høgsberg938f1022013-09-04 19:36:49 -0700522 if (dnd_get_item(dnd, x, y) || dnd->self_only || !has_flower) {
Kristian Høgsbergeae5de72012-04-11 22:42:15 -0400523 input_accept(input, NULL);
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300524 } else {
Kristian Høgsberg938f1022013-09-04 19:36:49 -0700525 input_accept(input, flower_mime_type);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400526 }
527}
528
529static void
530dnd_receive_func(void *data, size_t len, int32_t x, int32_t y, void *user_data)
531{
532 struct dnd *dnd = user_data;
533 struct dnd_flower_message *message = data;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400534 struct item *item;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400535 struct rectangle allocation;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400536
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400537 if (len == 0) {
538 return;
539 } else if (len != sizeof *message) {
Damien Lespiau4df7e272012-10-26 01:15:44 +0100540 fprintf(stderr, "odd message length %zu, expected %zu\n",
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400541 len, sizeof *message);
542 return;
543 }
544
Kristian Høgsbergbb977002012-01-10 19:11:42 -0500545 widget_get_allocation(dnd->widget, &allocation);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400546 item = item_create(dnd->display,
547 x - message->x_offset - allocation.x,
548 y - message->y_offset - allocation.y,
549 message->seed);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400550
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400551 dnd_add_item(dnd, item);
552 window_schedule_redraw(dnd->window);
553}
554
555static void
556dnd_drop_handler(struct window *window, struct input *input,
557 int32_t x, int32_t y, void *data)
558{
559 struct dnd *dnd = data;
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300560 struct dnd_flower_message message;
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400561
562 if (dnd_get_item(dnd, x, y)) {
563 fprintf(stderr, "got 'drop', but no target\n");
564 return;
565 }
566
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300567 if (!dnd->self_only) {
568 input_receive_drag_data(input,
Kristian Høgsberg938f1022013-09-04 19:36:49 -0700569 flower_mime_type,
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300570 dnd_receive_func, dnd);
571 } else if (dnd->current_drag) {
572 message.seed = dnd->current_drag->item->seed;
573 message.x_offset = dnd->current_drag->x_offset;
574 message.y_offset = dnd->current_drag->y_offset;
575 dnd_receive_func(&message, sizeof message, x, y, dnd);
576 dnd->current_drag = NULL;
577 } else {
578 fprintf(stderr, "ignoring drop from another client\n");
579 }
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400580}
581
582static struct dnd *
583dnd_create(struct display *display)
584{
585 struct dnd *dnd;
Kristian Høgsberg875ab9e2012-03-30 11:52:39 -0400586 int x, y;
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500587 int32_t width, height;
Kristian Høgsberg875ab9e2012-03-30 11:52:39 -0400588 unsigned int i;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400589
Peter Huttererf3d62272013-08-08 11:57:05 +1000590 dnd = xzalloc(sizeof *dnd);
Kristian Høgsberg009ac0a2012-01-31 15:24:48 -0500591 dnd->window = window_create(display);
Kristian Høgsberg29af3eb2012-01-10 22:41:05 -0500592 dnd->widget = frame_create(dnd->window, dnd);
Kristian Høgsberg248c1b62011-01-21 18:03:15 -0500593 window_set_title(dnd->window, "Wayland Drag and Drop Demo");
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400594
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400595 dnd->display = display;
596 dnd->key = 100;
597
598 for (i = 0; i < ARRAY_LENGTH(dnd->items); i++) {
599 x = (i % 4) * (item_width + item_padding) + item_padding;
600 y = (i / 4) * (item_height + item_padding) + item_padding;
601 if ((i ^ (i >> 2)) & 1)
Joel Teichroeb0c007ae2010-11-30 10:22:16 -0800602 dnd->items[i] = item_create(display, x, y, 0);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400603 else
604 dnd->items[i] = NULL;
605 }
606
607 window_set_user_data(dnd->window, dnd);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400608 window_set_keyboard_focus_handler(dnd->window,
609 keyboard_focus_handler);
Kristian Høgsberg47fe08a2011-10-28 12:26:06 -0400610 window_set_data_handler(dnd->window, dnd_data_handler);
611 window_set_drop_handler(dnd->window, dnd_drop_handler);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400612
Kristian Høgsbergb67e94b2012-01-10 12:23:19 -0500613 widget_set_redraw_handler(dnd->widget, dnd_redraw_handler);
Kristian Høgsberg75bc6672012-01-10 09:43:58 -0500614 widget_set_enter_handler(dnd->widget, dnd_enter_handler);
615 widget_set_motion_handler(dnd->widget, dnd_motion_handler);
616 widget_set_button_handler(dnd->widget, dnd_button_handler);
Kristian Høgsbergac7619f2012-01-09 09:26:38 -0500617
Kristian Høgsbergda846ca2011-01-11 10:00:52 -0500618 width = 4 * (item_width + item_padding) + item_padding;
619 height = 4 * (item_height + item_padding) + item_padding;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400620
Kristian Høgsberga1627922012-06-20 17:30:03 -0400621 frame_set_child_size(dnd->widget, width, height);
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400622
623 return dnd;
624}
625
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400626int
627main(int argc, char *argv[])
628{
629 struct display *d;
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300630 struct dnd *dnd;
631 int i;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400632
Kristian Høgsberg4172f662013-02-20 15:27:49 -0500633 d = display_create(&argc, argv);
Yuval Fledele9f5e362010-11-22 21:34:19 +0200634 if (d == NULL) {
635 fprintf(stderr, "failed to create display: %m\n");
636 return -1;
637 }
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400638
Ander Conselvan de Oliveira08bcf142012-05-29 10:58:27 +0300639 dnd = dnd_create(d);
640
641 for (i = 1; i < argc; i++)
642 if (strcmp("--self-only", argv[i]) == 0)
643 dnd->self_only = 1;
Kristian Høgsbergb8cc24e2010-08-18 20:31:06 -0400644
645 display_run(d);
646
647 return 0;
648}