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comparison: gtk/plugins/ticker/gtkticker.c

gtk/plugins/ticker/gtkticker.c

branch
gaim
changeset 20470
77693555855f
parent 12600
7ecd4441fdc7
parent 14253
b63ebf84c42b
child 20471
1966704b3e42
equal deleted inserted replaced
13071:b98e72d4089a 20470:77693555855f
1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 /*
21 * GtkTicker Copyright 2000 Syd Logan
22 */
23
24 #include "gtkticker.h"
25 #include <gtk/gtk.h>
26
27 static void gtk_ticker_compute_offsets (GtkTicker *ticker);
28 static void gtk_ticker_class_init (GtkTickerClass *klass);
29 static void gtk_ticker_init (GtkTicker *ticker);
30 static void gtk_ticker_map (GtkWidget *widget);
31 static void gtk_ticker_realize (GtkWidget *widget);
32 static void gtk_ticker_size_request (GtkWidget *widget,
33 GtkRequisition *requisition);
34 static void gtk_ticker_size_allocate (GtkWidget *widget,
35 GtkAllocation *allocation);
36 static void gtk_ticker_add_real (GtkContainer *container,
37 GtkWidget *widget);
38 static void gtk_ticker_remove_real (GtkContainer *container,
39 GtkWidget *widget);
40 static void gtk_ticker_forall (GtkContainer *container,
41 gboolean include_internals,
42 GtkCallback callback,
43 gpointer callback_data);
44 static GtkType gtk_ticker_child_type (GtkContainer *container);
45
46
47 static GtkContainerClass *parent_class = NULL;
48
49
50 GType gtk_ticker_get_type (void)
51 {
52 static GType ticker_type = 0;
53
54 ticker_type = g_type_from_name("GtkTicker");
55
56 if (!ticker_type)
57 {
58 static const GTypeInfo ticker_info =
59 {
60 sizeof(GtkTickerClass),
61 NULL,
62 NULL,
63 (GClassInitFunc) gtk_ticker_class_init,
64 NULL,
65 NULL,
66 sizeof(GtkTicker),
67 0,
68 (GInstanceInitFunc) gtk_ticker_init,
69 NULL
70 };
71
72 ticker_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTicker",
73 &ticker_info, 0);
74 }
75
76 /* kludge to re-initialise the class if it's already registered */
77 else if (parent_class == NULL) {
78 gtk_ticker_class_init((GtkTickerClass *)g_type_class_peek(ticker_type));
79 }
80
81 return ticker_type;
82 }
83
84 static void gtk_ticker_finalize(GObject *object) {
85 gtk_ticker_stop_scroll(GTK_TICKER(object));
86
87 G_OBJECT_CLASS(parent_class)->finalize(object);
88 }
89
90 static void gtk_ticker_class_init (GtkTickerClass *class)
91 {
92 GObjectClass *gobject_class;
93 GtkWidgetClass *widget_class;
94 GtkContainerClass *container_class;
95
96 gobject_class = (GObjectClass*) class;
97 widget_class = (GtkWidgetClass*) class;
98 container_class = (GtkContainerClass*) class;
99
100 parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
101
102 gobject_class->finalize = gtk_ticker_finalize;
103
104 widget_class->map = gtk_ticker_map;
105 widget_class->realize = gtk_ticker_realize;
106 widget_class->size_request = gtk_ticker_size_request;
107 widget_class->size_allocate = gtk_ticker_size_allocate;
108
109 container_class->add = gtk_ticker_add_real;
110 container_class->remove = gtk_ticker_remove_real;
111 container_class->forall = gtk_ticker_forall;
112 container_class->child_type = gtk_ticker_child_type;
113 }
114
115 static GtkType gtk_ticker_child_type (GtkContainer *container)
116 {
117 return GTK_TYPE_WIDGET;
118 }
119
120 static void gtk_ticker_init (GtkTicker *ticker)
121 {
122 GTK_WIDGET_UNSET_FLAGS (ticker, GTK_NO_WINDOW);
123
124 ticker->interval = (guint) 200;
125 ticker->scootch = (guint) 2;
126 ticker->children = NULL;
127 ticker->timer = 0;
128 ticker->dirty = TRUE;
129 }
130
131 GtkWidget* gtk_ticker_new (void)
132 {
133 return GTK_WIDGET(g_object_new(GTK_TYPE_TICKER, NULL));
134 }
135
136 static void gtk_ticker_put (GtkTicker *ticker, GtkWidget *widget)
137 {
138 GtkTickerChild *child_info;
139
140 g_return_if_fail (ticker != NULL);
141 g_return_if_fail (GTK_IS_TICKER (ticker));
142 g_return_if_fail (widget != NULL);
143
144 child_info = g_new(GtkTickerChild, 1);
145 child_info->widget = widget;
146 child_info->x = 0;
147
148 gtk_widget_set_parent(widget, GTK_WIDGET (ticker));
149
150 ticker->children = g_list_append (ticker->children, child_info);
151
152 if (GTK_WIDGET_REALIZED (ticker))
153 gtk_widget_realize (widget);
154
155 if (GTK_WIDGET_VISIBLE (ticker) && GTK_WIDGET_VISIBLE (widget))
156 {
157 if (GTK_WIDGET_MAPPED (ticker))
158 gtk_widget_map (widget);
159
160 gtk_widget_queue_resize (GTK_WIDGET (ticker));
161 }
162 }
163
164 void gtk_ticker_set_interval (GtkTicker *ticker, gint interval)
165 {
166 g_return_if_fail (ticker != NULL);
167 g_return_if_fail (GTK_IS_TICKER (ticker));
168
169 if ( interval < 0 )
170 interval = 200;
171 ticker->interval = interval;
172 }
173
174 guint gtk_ticker_get_interval (GtkTicker *ticker)
175 {
176 g_return_val_if_fail (ticker != NULL, -1);
177 g_return_val_if_fail (GTK_IS_TICKER (ticker), -1);
178
179 return ticker->interval;
180 }
181
182 void gtk_ticker_set_scootch (GtkTicker *ticker, gint scootch)
183 {
184 g_return_if_fail (ticker != NULL);
185 g_return_if_fail (GTK_IS_TICKER (ticker));
186
187 if (scootch <= 0)
188 scootch = 2;
189 ticker->scootch = scootch;
190 ticker->dirty = TRUE;
191 }
192
193 guint gtk_ticker_get_scootch (GtkTicker *ticker )
194 {
195 g_return_val_if_fail (ticker != NULL, -1);
196 g_return_val_if_fail (GTK_IS_TICKER (ticker), -1);
197
198 return ticker->scootch;
199 }
200
201 void gtk_ticker_set_spacing (GtkTicker *ticker, gint spacing )
202 {
203 g_return_if_fail (ticker != NULL);
204 g_return_if_fail (GTK_IS_TICKER (ticker));
205
206 if ( spacing < 0 )
207 spacing = 0;
208 ticker->spacing = spacing;
209 ticker->dirty = TRUE;
210 }
211
212 static int ticker_timeout(gpointer data)
213 {
214 GtkTicker *ticker = (GtkTicker *) data;
215
216 if (GTK_WIDGET_VISIBLE (ticker))
217 gtk_widget_queue_resize (GTK_WIDGET (ticker));
218
219 return( TRUE );
220 }
221
222 void gtk_ticker_start_scroll(GtkTicker *ticker)
223 {
224 g_return_if_fail (ticker != NULL);
225 g_return_if_fail (GTK_IS_TICKER (ticker));
226 if ( ticker->timer != 0 )
227 return;
228 ticker->timer = g_timeout_add(ticker->interval, ticker_timeout, ticker);
229 }
230
231 void gtk_ticker_stop_scroll(GtkTicker *ticker)
232 {
233 g_return_if_fail (ticker != NULL);
234 g_return_if_fail (GTK_IS_TICKER (ticker));
235 if ( ticker->timer == 0 )
236 return;
237 g_source_remove(ticker->timer);
238 ticker->timer = 0;
239 }
240
241 guint gtk_ticker_get_spacing (GtkTicker *ticker )
242 {
243 g_return_val_if_fail (ticker != NULL, -1);
244 g_return_val_if_fail (GTK_IS_TICKER (ticker), -1);
245
246 return ticker->spacing;
247 }
248
249 static void gtk_ticker_map (GtkWidget *widget)
250 {
251 GtkTicker *ticker;
252 GtkTickerChild *child;
253 GList *children;
254
255 g_return_if_fail (widget != NULL);
256 g_return_if_fail (GTK_IS_TICKER (widget));
257
258 GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
259 ticker = GTK_TICKER (widget);
260
261 children = ticker->children;
262 while (children)
263 {
264 child = children->data;
265 children = children->next;
266
267 if (GTK_WIDGET_VISIBLE (child->widget) &&
268 !GTK_WIDGET_MAPPED (child->widget))
269 gtk_widget_map (child->widget);
270 }
271
272 gdk_window_show (widget->window);
273 }
274
275 static void gtk_ticker_realize (GtkWidget *widget)
276 {
277 GdkWindowAttr attributes;
278 gint attributes_mask;
279
280 g_return_if_fail (widget != NULL);
281 g_return_if_fail (GTK_IS_TICKER (widget));
282
283 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
284
285 attributes.window_type = GDK_WINDOW_CHILD;
286 attributes.x = widget->allocation.x;
287 attributes.y = widget->allocation.y;
288 attributes.width = widget->allocation.width;
289 attributes.height = widget->allocation.height;
290 attributes.wclass = GDK_INPUT_OUTPUT;
291 attributes.visual = gtk_widget_get_visual (widget);
292 attributes.colormap = gtk_widget_get_colormap (widget);
293 attributes.event_mask = gtk_widget_get_events (widget);
294 attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK;
295
296 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
297
298 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
299 &attributes, attributes_mask);
300 gdk_window_set_user_data (widget->window, widget);
301
302 widget->style = gtk_style_attach (widget->style, widget->window);
303 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
304 }
305
306 static void gtk_ticker_size_request (GtkWidget *widget, GtkRequisition *requisition)
307 {
308 GtkTicker *ticker;
309 GtkTickerChild *child;
310 GList *children;
311 GtkRequisition child_requisition;
312
313 g_return_if_fail (widget != NULL);
314 g_return_if_fail (GTK_IS_TICKER (widget));
315 g_return_if_fail (requisition != NULL);
316
317 ticker = GTK_TICKER (widget);
318 requisition->width = 0;
319 requisition->height = 0;
320
321 children = ticker->children;
322 while (children)
323 {
324 child = children->data;
325 children = children->next;
326
327 if (GTK_WIDGET_VISIBLE (child->widget))
328 {
329 gtk_widget_size_request (child->widget, &child_requisition);
330
331 requisition->height = MAX (requisition->height,
332 child_requisition.height);
333 requisition->width += child_requisition.width + ticker->spacing;
334 }
335 }
336 if ( requisition->width > ticker->spacing )
337 requisition->width -= ticker->spacing;
338
339 requisition->height += GTK_CONTAINER (ticker)->border_width * 2;
340 requisition->width += GTK_CONTAINER (ticker)->border_width * 2;
341 }
342
343 static void gtk_ticker_compute_offsets (GtkTicker *ticker)
344 {
345 GtkTickerChild *child;
346 GtkRequisition child_requisition;
347 GList *children;
348 guint16 border_width;
349
350 g_return_if_fail (ticker != NULL);
351 g_return_if_fail (GTK_IS_TICKER(ticker));
352
353 border_width = GTK_CONTAINER (ticker)->border_width;
354
355 ticker->width = GTK_WIDGET(ticker)->allocation.width;
356 ticker->total = 0;
357 children = ticker->children;
358 while (children) {
359 child = children->data;
360
361 child->x = 0;
362 if (GTK_WIDGET_VISIBLE (child->widget)) {
363 gtk_widget_get_child_requisition (child->widget, &child_requisition);
364 child->offset = ticker->total;
365 ticker->total +=
366 child_requisition.width + border_width + ticker->spacing;
367 }
368 children = children->next;
369 }
370 ticker->dirty = FALSE;
371 }
372
373 static void gtk_ticker_size_allocate (GtkWidget *widget,
374 GtkAllocation *allocation)
375 {
376 GtkTicker *ticker;
377 GtkTickerChild *child;
378 GtkAllocation child_allocation;
379 GtkRequisition child_requisition;
380 GList *children;
381 guint16 border_width;
382
383 g_return_if_fail (widget != NULL);
384 g_return_if_fail (GTK_IS_TICKER(widget));
385 g_return_if_fail (allocation != NULL);
386
387 ticker = GTK_TICKER (widget);
388
389 if ( GTK_WIDGET(ticker)->allocation.width != ticker->width )
390 ticker->dirty = TRUE;
391
392 if ( ticker->dirty == TRUE ) {
393 gtk_ticker_compute_offsets( ticker );
394 }
395
396 widget->allocation = *allocation;
397 if (GTK_WIDGET_REALIZED (widget))
398 gdk_window_move_resize (widget->window,
399 allocation->x,
400 allocation->y,
401 allocation->width,
402 allocation->height);
403
404 border_width = GTK_CONTAINER (ticker)->border_width;
405
406 children = ticker->children;
407 while (children)
408 {
409 child = children->data;
410 child->x -= ticker->scootch;
411
412 if (GTK_WIDGET_VISIBLE (child->widget)) {
413 gtk_widget_get_child_requisition (child->widget, &child_requisition);
414 child_allocation.width = child_requisition.width;
415 child_allocation.x = child->offset + border_width + child->x;
416 if ( ( child_allocation.x + child_allocation.width ) < GTK_WIDGET(ticker)->allocation.x ) {
417 if ( ticker->total >= GTK_WIDGET(ticker)->allocation.width ) {
418 child->x += GTK_WIDGET(ticker)->allocation.x + GTK_WIDGET(ticker)->allocation.width + ( ticker->total - ( GTK_WIDGET(ticker)->allocation.x + GTK_WIDGET(ticker)->allocation.width ) );
419 }
420 else {
421 child->x += GTK_WIDGET(ticker)->allocation.x + GTK_WIDGET(ticker)->allocation.width;
422 }
423 }
424 child_allocation.y = border_width;
425 child_allocation.height = child_requisition.height;
426 gtk_widget_size_allocate (child->widget, &child_allocation);
427 }
428 children = children->next;
429 }
430 }
431
432 void gtk_ticker_add(GtkTicker *ticker, GtkWidget *widget)
433 {
434 gtk_ticker_add_real( GTK_CONTAINER( ticker ), widget );
435 ticker->dirty = TRUE;
436 }
437
438 void gtk_ticker_remove(GtkTicker *ticker, GtkWidget *widget)
439 {
440 gtk_ticker_remove_real( GTK_CONTAINER( ticker ), widget );
441 ticker->dirty = TRUE;
442 }
443
444 static void gtk_ticker_add_real(GtkContainer *container, GtkWidget *widget)
445 {
446 g_return_if_fail (container != NULL);
447 g_return_if_fail (GTK_IS_TICKER (container));
448 g_return_if_fail (widget != NULL);
449
450 gtk_ticker_put(GTK_TICKER (container), widget);
451 }
452
453 static void gtk_ticker_remove_real(GtkContainer *container, GtkWidget *widget)
454 {
455 GtkTicker *ticker;
456 GtkTickerChild *child;
457 GList *children;
458
459 g_return_if_fail (container != NULL);
460 g_return_if_fail (GTK_IS_TICKER (container));
461 g_return_if_fail (widget != NULL);
462
463 ticker = GTK_TICKER (container);
464
465 children = ticker->children;
466 while (children)
467 {
468 child = children->data;
469
470 if (child->widget == widget)
471 {
472 gboolean was_visible = GTK_WIDGET_VISIBLE (widget);
473
474 gtk_widget_unparent (widget);
475
476 ticker->children = g_list_remove_link (ticker->children, children);
477 g_list_free (children);
478 g_free (child);
479
480 if (was_visible && GTK_WIDGET_VISIBLE (container))
481 gtk_widget_queue_resize (GTK_WIDGET (container));
482
483 break;
484 }
485
486 children = children->next;
487 }
488 }
489
490 static void gtk_ticker_forall (GtkContainer *container,
491 gboolean include_internals,
492 GtkCallback callback,
493 gpointer callback_data)
494 {
495 GtkTicker *ticker;
496 GtkTickerChild *child;
497 GList *children;
498
499 g_return_if_fail (container != NULL);
500 g_return_if_fail (GTK_IS_TICKER (container));
501 g_return_if_fail (callback != NULL);
502
503 ticker = GTK_TICKER (container);
504
505 children = ticker->children;
506 while (children)
507 {
508 child = children->data;
509 children = children->next;
510
511 (* callback) (child->widget, callback_data);
512 }
513 }
514

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