145346af3026f595c20fb199284b2f82d7801ada
1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 *
3 */
4 /* ***** BEGIN LICENSE BLOCK *****
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6 *
7 * The contents of this file are subject to the Mozilla Public License Version
8 * 1.1 (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
11 *
12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14 * for the specific language governing rights and limitations under the
15 * License.
16 *
17 * The Original Code is Eek Preview Stuffs.
18 *
19 * The Initial Developer of the Original Code is
20 * Jon A. Cruz.
21 * Portions created by the Initial Developer are Copyright (C) 2005
22 * the Initial Developer. All Rights Reserved.
23 *
24 * Contributor(s):
25 *
26 * Alternatively, the contents of this file may be used under the terms of
27 * either the GNU General Public License Version 2 or later (the "GPL"), or
28 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 * in which case the provisions of the GPL or the LGPL are applicable instead
30 * of those above. If you wish to allow use of your version of this file only
31 * under the terms of either the GPL or the LGPL, and not to allow others to
32 * use your version of this file under the terms of the MPL, indicate your
33 * decision by deleting the provisions above and replace them with the notice
34 * and other provisions required by the GPL or the LGPL. If you do not delete
35 * the provisions above, a recipient may use your version of this file under
36 * the terms of any one of the MPL, the GPL or the LGPL.
37 *
38 * ***** END LICENSE BLOCK ***** */
40 #include <gtk/gtk.h>
41 #include "eek-preview.h"
43 #define PRIME_BUTTON_MAGIC_NUMBER 1
45 #define FOCUS_PROP_ID 1
47 /* Keep in sycn with last value in eek-preview.h */
48 #define PREVIEW_SIZE_LAST PREVIEW_SIZE_HUGE
49 #define PREVIEW_SIZE_NEXTFREE (PREVIEW_SIZE_HUGE + 1)
51 #define PREVIEW_MAX_RATIO 500
53 static void eek_preview_class_init( EekPreviewClass *klass );
54 static void eek_preview_init( EekPreview *preview );
56 static GtkWidgetClass* parent_class = 0;
58 void eek_preview_set_color( EekPreview* preview, int r, int g, int b )
59 {
60 if ( (preview->_r = r)
61 || (preview->_g = g)
62 || (preview->_b = b) ) {
63 preview->_r = r;
64 preview->_g = g;
65 preview->_b = b;
67 gtk_widget_queue_draw(GTK_WIDGET(preview));
68 }
69 }
72 GType eek_preview_get_type(void)
73 {
74 static GType preview_type = 0;
76 if (!preview_type) {
77 static const GTypeInfo preview_info = {
78 sizeof( EekPreviewClass ),
79 NULL, /* base_init */
80 NULL, /* base_finalize */
81 (GClassInitFunc)eek_preview_class_init,
82 NULL, /* class_finalize */
83 NULL, /* class_data */
84 sizeof( EekPreview ),
85 0, /* n_preallocs */
86 (GInstanceInitFunc)eek_preview_init,
87 NULL /* value_table */
88 };
91 preview_type = g_type_register_static( GTK_TYPE_DRAWING_AREA, "EekPreview", &preview_info, (GTypeFlags)0 );
92 }
94 return preview_type;
95 }
97 static gboolean setupDone = FALSE;
98 static GtkRequisition sizeThings[PREVIEW_SIZE_NEXTFREE];
100 void eek_preview_set_size_mappings( guint count, GtkIconSize const* sizes )
101 {
102 gint width = 0;
103 gint height = 0;
104 gint smallest = 512;
105 gint largest = 0;
106 guint i = 0;
107 guint delta = 0;
109 for ( i = 0; i < count; ++i ) {
110 gboolean worked = gtk_icon_size_lookup( sizes[i], &width, &height );
111 if ( worked ) {
112 if ( width < smallest ) {
113 smallest = width;
114 }
115 if ( width > largest ) {
116 largest = width;
117 }
118 }
119 }
121 smallest = (smallest * 3) / 4;
123 delta = largest - smallest;
125 for ( i = 0; i < G_N_ELEMENTS(sizeThings); ++i ) {
126 guint val = smallest + ( (i * delta) / (G_N_ELEMENTS(sizeThings) - 1) );
127 sizeThings[i].width = val;
128 sizeThings[i].height = val;
129 }
131 setupDone = TRUE;
132 }
134 static void eek_preview_size_request( GtkWidget* widget, GtkRequisition* req )
135 {
136 gint width = 0;
137 gint height = 0;
138 EekPreview* preview = EEK_PREVIEW(widget);
140 if ( !setupDone ) {
141 GtkIconSize sizes[] = {
142 GTK_ICON_SIZE_MENU,
143 GTK_ICON_SIZE_SMALL_TOOLBAR,
144 GTK_ICON_SIZE_LARGE_TOOLBAR,
145 GTK_ICON_SIZE_BUTTON,
146 GTK_ICON_SIZE_DIALOG
147 };
148 eek_preview_set_size_mappings( G_N_ELEMENTS(sizes), sizes );
149 }
151 width = sizeThings[preview->_size].width;
152 height = sizeThings[preview->_size].height;
154 if ( preview->_view == VIEW_TYPE_LIST ) {
155 width *= 3;
156 }
158 if ( preview->_ratio != 100 ) {
159 width = (width * preview->_ratio) / 100;
160 if ( width < 0 ) {
161 width = 1;
162 }
163 }
165 req->width = width;
166 req->height = height;
167 }
169 enum {
170 CLICKED_SIGNAL,
171 ALTCLICKED_SIGNAL,
172 LAST_SIGNAL
173 };
176 static guint eek_preview_signals[LAST_SIGNAL] = { 0 };
179 gboolean eek_preview_expose_event( GtkWidget* widget, GdkEventExpose* event )
180 {
181 /* g_message("Exposed!!! %s", GTK_WIDGET_HAS_FOCUS(widget) ? "XXX" : "---" ); */
182 gint insetX = 0;
183 gint insetY = 0;
185 (void)event;
186 /*
187 gint lower = widget->allocation.width;
188 lower = (widget->allocation.height < lower) ? widget->allocation.height : lower;
189 if ( lower > 16 ) {
190 insetX++;
191 if ( lower > 18 ) {
192 insetX++;
193 if ( lower > 22 ) {
194 insetX++;
195 if ( lower > 24 ) {
196 insetX++;
197 if ( lower > 32 ) {
198 insetX++;
199 }
200 }
201 }
202 }
203 insetY = insetX;
204 }
205 */
207 if ( GTK_WIDGET_DRAWABLE( widget ) ) {
208 GtkStyle* style = gtk_widget_get_style( widget );
210 if ( insetX > 0 || insetY > 0 ) {
211 gtk_paint_flat_box( style,
212 widget->window,
213 (GtkStateType)GTK_WIDGET_STATE(widget),
214 GTK_SHADOW_NONE,
215 NULL,
216 widget,
217 NULL,
218 0, 0,
219 widget->allocation.width, widget->allocation.height);
220 }
222 GdkGC *gc = gdk_gc_new( widget->window );
223 EekPreview* preview = EEK_PREVIEW(widget);
224 GdkColor fg = {0, preview->_r, preview->_g, preview->_b};
225 gdk_colormap_alloc_color( gdk_colormap_get_system(), &fg, FALSE, TRUE );
227 gdk_gc_set_foreground( gc, &fg );
229 gdk_draw_rectangle( widget->window,
230 gc,
231 TRUE,
232 insetX, insetY,
233 widget->allocation.width - (insetX * 2), widget->allocation.height - (insetY * 2) );
235 if ( preview->_linked ) {
236 /* Draw arrow */
237 GdkRectangle possible = {insetX, insetY, (widget->allocation.width - (insetX * 2)), (widget->allocation.height - (insetY * 2)) };
238 GdkRectangle area = {possible.x, possible.y, possible.width / 2, possible.height / 2 };
240 /* Make it square */
241 if ( area.width > area.height )
242 area.width = area.height;
243 if ( area.height > area.width )
244 area.height = area.width;
246 /* Center it horizontally */
247 if ( area.width < possible.width ) {
248 int diff = (possible.width - area.width) / 2;
249 area.x += diff;
250 }
253 if ( preview->_linked & PREVIEW_LINK_IN ) {
254 gtk_paint_arrow( style,
255 widget->window,
256 (GtkStateType)widget->state,
257 GTK_SHADOW_ETCHED_IN,
258 NULL, /* clip area. &area, */
259 widget, /* may be NULL */
260 NULL, /* detail */
261 GTK_ARROW_DOWN,
262 FALSE,
263 area.x, area.y,
264 area.width, area.height
265 );
266 }
268 if ( preview->_linked & PREVIEW_LINK_OUT ) {
269 GdkRectangle otherArea = {area.x, area.y, area.width, area.height};
270 if ( otherArea.height < possible.height ) {
271 otherArea.y = possible.y + (possible.height - otherArea.height);
272 }
274 gtk_paint_arrow( style,
275 widget->window,
276 (GtkStateType)widget->state,
277 GTK_SHADOW_ETCHED_OUT,
278 NULL, /* clip area. &area, */
279 widget, /* may be NULL */
280 NULL, /* detail */
281 GTK_ARROW_UP,
282 FALSE,
283 otherArea.x, otherArea.y,
284 otherArea.width, otherArea.height
285 );
286 }
288 if ( preview->_linked & PREVIEW_LINK_OTHER ) {
289 GdkRectangle otherArea = {insetX, area.y, area.width, area.height};
290 if ( otherArea.height < possible.height ) {
291 otherArea.y = possible.y + (possible.height - otherArea.height) / 2;
292 }
294 gtk_paint_arrow( style,
295 widget->window,
296 (GtkStateType)widget->state,
297 GTK_SHADOW_ETCHED_OUT,
298 NULL, /* clip area. &area, */
299 widget, /* may be NULL */
300 NULL, /* detail */
301 GTK_ARROW_LEFT,
302 FALSE,
303 otherArea.x, otherArea.y,
304 otherArea.width, otherArea.height
305 );
306 }
307 }
309 if ( GTK_WIDGET_HAS_FOCUS(widget) ) {
310 gtk_paint_focus( style,
311 widget->window,
312 GTK_STATE_NORMAL,
313 NULL, /* GdkRectangle *area, */
314 widget,
315 NULL,
316 0 + 1, 0 + 1,
317 widget->allocation.width - 2, widget->allocation.height - 2 );
318 }
319 }
322 return FALSE;
323 }
326 static gboolean eek_preview_enter_cb( GtkWidget* widget, GdkEventCrossing* event )
327 {
328 if ( gtk_get_event_widget( (GdkEvent*)event ) == widget ) {
329 EekPreview* preview = EEK_PREVIEW(widget);
330 preview->_within = TRUE;
331 gtk_widget_set_state( widget, preview->_hot ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT );
332 }
333 return FALSE;
334 }
336 static gboolean eek_preview_leave_cb( GtkWidget* widget, GdkEventCrossing* event )
337 {
338 if ( gtk_get_event_widget( (GdkEvent*)event ) == widget ) {
339 EekPreview* preview = EEK_PREVIEW(widget);
340 preview->_within = FALSE;
341 gtk_widget_set_state( widget, GTK_STATE_NORMAL );
342 }
343 return FALSE;
344 }
346 /*
347 static gboolean eek_preview_focus_in_event( GtkWidget* widget, GdkEventFocus* event )
348 {
349 g_message("focus IN");
350 gboolean blip = parent_class->focus_in_event ? parent_class->focus_in_event(widget, event) : FALSE;
351 return blip;
352 }
354 static gboolean eek_preview_focus_out_event( GtkWidget* widget, GdkEventFocus* event )
355 {
356 g_message("focus OUT");
357 gboolean blip = parent_class->focus_out_event ? parent_class->focus_out_event(widget, event) : FALSE;
358 return blip;
359 }
360 */
362 static gboolean eek_preview_button_press_cb( GtkWidget* widget, GdkEventButton* event )
363 {
364 if ( gtk_get_event_widget( (GdkEvent*)event ) == widget ) {
365 EekPreview* preview = EEK_PREVIEW(widget);
367 if ( preview->_takesFocus && !GTK_WIDGET_HAS_FOCUS(widget) ) {
368 gtk_widget_grab_focus(widget);
369 }
371 if ( event->button == PRIME_BUTTON_MAGIC_NUMBER ) {
372 preview->_hot = TRUE;
373 if ( preview->_within ) {
374 gtk_widget_set_state( widget, GTK_STATE_ACTIVE );
375 }
376 }
377 }
379 return FALSE;
380 }
382 static gboolean eek_preview_button_release_cb( GtkWidget* widget, GdkEventButton* event )
383 {
384 if ( gtk_get_event_widget( (GdkEvent*)event ) == widget ) {
385 EekPreview* preview = EEK_PREVIEW(widget);
386 preview->_hot = FALSE;
387 gtk_widget_set_state( widget, GTK_STATE_NORMAL );
388 if ( preview->_within && event->button == PRIME_BUTTON_MAGIC_NUMBER ) {
389 gboolean isAlt = (event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK;
391 if ( isAlt ) {
392 g_signal_emit( widget, eek_preview_signals[ALTCLICKED_SIGNAL], 0, 2 );
393 } else {
394 g_signal_emit( widget, eek_preview_signals[CLICKED_SIGNAL], 0 );
395 }
396 }
397 }
398 return FALSE;
399 }
401 gboolean eek_preview_key_press_event( GtkWidget* widget, GdkEventKey* event)
402 {
403 (void)widget;
404 (void)event;
405 g_message("TICK");
406 return FALSE;
407 }
409 gboolean eek_preview_key_release_event( GtkWidget* widget, GdkEventKey* event)
410 {
411 (void)widget;
412 (void)event;
413 g_message("tock");
414 return FALSE;
415 }
417 static void eek_preview_get_property( GObject *object,
418 guint property_id,
419 GValue *value,
420 GParamSpec *pspec)
421 {
422 GObjectClass* gobjClass = G_OBJECT_CLASS(parent_class);
423 switch ( property_id ) {
424 case FOCUS_PROP_ID:
425 {
426 EekPreview* preview = EEK_PREVIEW( object );
427 g_value_set_boolean( value, preview->_takesFocus );
428 }
429 break;
430 default:
431 {
432 if ( gobjClass->get_property ) {
433 gobjClass->get_property( object, property_id, value, pspec );
434 }
435 }
436 }
437 }
439 static void eek_preview_set_property( GObject *object,
440 guint property_id,
441 const GValue *value,
442 GParamSpec *pspec)
443 {
444 GObjectClass* gobjClass = G_OBJECT_CLASS(parent_class);
445 switch ( property_id ) {
446 case FOCUS_PROP_ID:
447 {
448 EekPreview* preview = EEK_PREVIEW( object );
449 gboolean val = g_value_get_boolean( value );
450 if ( val != preview->_takesFocus ) {
451 preview->_takesFocus = val;
452 }
453 }
454 break;
455 default:
456 {
457 if ( gobjClass->set_property ) {
458 gobjClass->set_property( object, property_id, value, pspec );
459 }
460 }
461 }
462 }
465 static gboolean eek_preview_popup_menu( GtkWidget* widget )
466 {
467 /* g_message("Do the popup!"); */
468 gboolean blip = parent_class->popup_menu ? parent_class->popup_menu(widget) : FALSE;
469 return blip;
470 }
473 static void eek_preview_class_init( EekPreviewClass *klass )
474 {
475 GObjectClass* gobjClass = G_OBJECT_CLASS(klass);
476 /*GtkObjectClass* objectClass = (GtkObjectClass*)klass;*/
477 GtkWidgetClass* widgetClass = (GtkWidgetClass*)klass;
479 gobjClass->set_property = eek_preview_set_property;
480 gobjClass->get_property = eek_preview_get_property;
482 /*objectClass->destroy = eek_preview_destroy;*/
484 parent_class = (GtkWidgetClass*)g_type_class_peek_parent( klass );
486 /*widgetClass->map = ;*/
487 /*widgetClass->unmap = ;*/
488 /*widgetClass->realize = ;*/
489 /*widgetClass->unrealize = ;*/
490 widgetClass->size_request = eek_preview_size_request;
491 /*widgetClass->size_allocate = ;*/
492 /*widgetClass->state_changed = ;*/
493 /*widgetClass->style_set = ;*/
494 /*widgetClass->grab_notify = ;*/
496 widgetClass->button_press_event = eek_preview_button_press_cb;
497 widgetClass->button_release_event = eek_preview_button_release_cb;
498 /*widgetClass->delete_event = ;*/
499 /*widgetClass->destroy_event = ;*/
500 widgetClass->expose_event = eek_preview_expose_event;
501 /* widgetClass->key_press_event = eek_preview_key_press_event; */
502 /* widgetClass->key_release_event = eek_preview_key_release_event; */
503 widgetClass->enter_notify_event = eek_preview_enter_cb;
504 widgetClass->leave_notify_event = eek_preview_leave_cb;
505 /*widgetClass->configure_event = ;*/
506 /*widgetClass->focus_in_event = eek_preview_focus_in_event;*/
507 /*widgetClass->focus_out_event = eek_preview_focus_out_event;*/
509 /* selection */
510 /*widgetClass->selection_get = ;*/
511 /*widgetClass->selection_received = ;*/
514 /* drag source: */
515 /*widgetClass->drag_begin = ;*/
516 /*widgetClass->drag_end = ;*/
517 /*widgetClass->drag_data_get = ;*/
518 /*widgetClass->drag_data_delete = ;*/
520 /* drag target: */
521 /*widgetClass->drag_leave = ;*/
522 /*widgetClass->drag_motion = ;*/
523 /*widgetClass->drag_drop = ;*/
524 /*widgetClass->drag_data_received = ;*/
526 /* For keybindings: */
527 widgetClass->popup_menu = eek_preview_popup_menu;
528 /*widgetClass->show_help = ;*/
530 /* Accessibility support: */
531 /*widgetClass->get_accessible = ;*/
532 /*widgetClass->screen_changed = ;*/
533 /*widgetClass->can_activate_accel = ;*/
536 eek_preview_signals[CLICKED_SIGNAL] =
537 g_signal_new( "clicked",
538 G_TYPE_FROM_CLASS( klass ),
539 (GSignalFlags)(G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION),
540 G_STRUCT_OFFSET( EekPreviewClass, clicked ),
541 NULL, NULL,
542 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0 );
544 eek_preview_signals[ALTCLICKED_SIGNAL] =
545 g_signal_new( "alt-clicked",
546 G_TYPE_FROM_CLASS( klass ),
547 (GSignalFlags)(G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION),
548 G_STRUCT_OFFSET( EekPreviewClass, clicked ),
549 NULL, NULL,
550 g_cclosure_marshal_VOID__INT, G_TYPE_NONE,
551 1, G_TYPE_INT );
554 g_object_class_install_property( gobjClass,
555 FOCUS_PROP_ID,
556 g_param_spec_boolean(
557 "focus-on-click",
558 NULL,
559 "flag to grab focus when clicked",
560 TRUE,
561 (GParamFlags)(G_PARAM_READWRITE | G_PARAM_CONSTRUCT)
562 )
563 );
564 }
566 void eek_preview_set_linked( EekPreview* splat, LinkType link )
567 {
568 link = (LinkType)(link & PREVIEW_LINK_ALL);
569 if ( link != (LinkType)splat->_linked ) {
570 splat->_linked = link;
572 gtk_widget_queue_draw( GTK_WIDGET(splat) );
573 }
574 }
576 LinkType eek_preview_get_linked( EekPreview* splat )
577 {
578 return (LinkType)splat->_linked;
579 }
581 gboolean eek_preview_get_focus_on_click( EekPreview* preview )
582 {
583 return preview->_takesFocus;
584 }
586 void eek_preview_set_focus_on_click( EekPreview* preview, gboolean focus_on_click )
587 {
588 if ( focus_on_click != preview->_takesFocus ) {
589 preview->_takesFocus = focus_on_click;
590 }
591 }
593 void eek_preview_set_details( EekPreview* preview, PreviewStyle prevstyle, ViewType view, PreviewSize size, guint ratio )
594 {
595 preview->_prevstyle = prevstyle;
596 preview->_view = view;
598 if ( size > PREVIEW_SIZE_LAST ) {
599 size = PREVIEW_SIZE_LAST;
600 }
601 preview->_size = size;
603 if ( ratio > PREVIEW_MAX_RATIO ) {
604 ratio = PREVIEW_MAX_RATIO;
605 }
606 preview->_ratio = ratio;
608 gtk_widget_queue_draw(GTK_WIDGET(preview));
609 }
611 static void eek_preview_init( EekPreview *preview )
612 {
613 GtkWidget* widg = GTK_WIDGET(preview);
614 GTK_WIDGET_SET_FLAGS( widg, GTK_CAN_FOCUS );
615 GTK_WIDGET_SET_FLAGS( widg, GTK_RECEIVES_DEFAULT );
617 gtk_widget_set_sensitive( widg, TRUE );
619 gtk_widget_add_events(widg, GDK_BUTTON_PRESS_MASK
620 | GDK_BUTTON_RELEASE_MASK
621 | GDK_KEY_PRESS_MASK
622 | GDK_KEY_RELEASE_MASK
623 | GDK_FOCUS_CHANGE_MASK
624 | GDK_ENTER_NOTIFY_MASK
625 | GDK_LEAVE_NOTIFY_MASK );
627 /* gtk_widget_add_events( widg, GDK_ALL_EVENTS_MASK );*/
629 preview->_r = 0x80;
630 preview->_g = 0x80;
631 preview->_b = 0xcc;
633 preview->_hot = FALSE;
634 preview->_within = FALSE;
635 preview->_takesFocus = FALSE;
637 preview->_prevstyle = PREVIEW_STYLE_ICON;
638 preview->_view = VIEW_TYPE_LIST;
639 preview->_size = PREVIEW_SIZE_SMALL;
640 preview->_ratio = 100;
642 /*
643 GdkColor color = {0};
644 color.red = (255 << 8) | 255;
646 GdkColor whack = {0};
647 whack.green = (255 << 8) | 255;
649 gtk_widget_modify_bg( widg, GTK_STATE_NORMAL, &color );
650 gtk_widget_modify_bg( widg, GTK_STATE_PRELIGHT, &whack );
651 */
653 /* GTK_STATE_ACTIVE, */
654 /* GTK_STATE_PRELIGHT, */
655 /* GTK_STATE_SELECTED, */
656 /* GTK_STATE_INSENSITIVE */
658 if ( 0 ) {
659 GdkColor color = {0,0,0,0};
661 color.red = 0xffff;
662 color.green = 0;
663 color.blue = 0xffff;
664 gdk_colormap_alloc_color( gdk_colormap_get_system(), &color, FALSE, TRUE );
665 gtk_widget_modify_bg(widg, GTK_STATE_ACTIVE, &color);
667 color.red = 0;
668 color.green = 0xffff;
669 color.blue = 0;
670 gdk_colormap_alloc_color( gdk_colormap_get_system(), &color, FALSE, TRUE );
671 gtk_widget_modify_bg(widg, GTK_STATE_SELECTED, &color);
673 color.red = 0xffff;
674 color.green = 0;
675 color.blue = 0;
676 gdk_colormap_alloc_color( gdk_colormap_get_system(), &color, FALSE, TRUE );
677 gtk_widget_modify_bg( widg, GTK_STATE_PRELIGHT, &color );
678 }
679 }
682 GtkWidget* eek_preview_new(void)
683 {
684 return GTK_WIDGET( g_object_new( EEK_PREVIEW_TYPE, NULL ) );
685 }