]> git.sesse.net Git - vlc/blob - modules/gui/macosx/Windows.m
macosx: deduplicate window accessibility code
[vlc] / modules / gui / macosx / Windows.m
1 /*****************************************************************************
2  * Windows.m: MacOS X interface module
3  *****************************************************************************
4  * Copyright (C) 2012 VLC authors and VideoLAN
5  * $Id$
6  *
7  * Authors: Felix Paul Kühne <fkuehne -at- videolan -dot- org>
8  *          David Fuhrmann <david dot fuhrmann at googlemail dot com>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23  *****************************************************************************/
24
25 #import "Windows.h"
26 #import "intf.h"
27 #import "CoreInteraction.h"
28
29 /*****************************************************************************
30  * VLCWindow
31  *
32  *  Missing extension to NSWindow
33  *****************************************************************************/
34
35 @implementation VLCWindow
36 - (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)styleMask
37                   backing:(NSBackingStoreType)backingType defer:(BOOL)flag
38 {
39     self = [super initWithContentRect:contentRect styleMask:styleMask backing:backingType defer:flag];
40     if (self) {
41         /* we don't want this window to be restored on relaunch */
42         if (!OSX_SNOW_LEOPARD)
43             [self setRestorable:NO];
44     }
45     return self;
46 }
47
48 - (void)setCanBecomeKeyWindow: (BOOL)canBecomeKey
49 {
50     b_isset_canBecomeKeyWindow = YES;
51     b_canBecomeKeyWindow = canBecomeKey;
52 }
53
54 - (BOOL)canBecomeKeyWindow
55 {
56     if (b_isset_canBecomeKeyWindow)
57         return b_canBecomeKeyWindow;
58
59     return [super canBecomeKeyWindow];
60 }
61
62 - (void)setCanBecomeMainWindow: (BOOL)canBecomeMain
63 {
64     b_isset_canBecomeMainWindow = YES;
65     b_canBecomeMainWindow = canBecomeMain;
66 }
67
68 - (BOOL)canBecomeMainWindow
69 {
70     if (b_isset_canBecomeMainWindow)
71         return b_canBecomeMainWindow;
72
73     return [super canBecomeMainWindow];
74 }
75
76 - (void)closeAndAnimate: (BOOL)animate
77 {
78     NSInvocation *invoc;
79
80     if (!animate) {
81         [super close];
82         return;
83     }
84
85     invoc = [NSInvocation invocationWithMethodSignature:[super methodSignatureForSelector:@selector(close)]];
86     [invoc setTarget: self];
87
88     if (![self isVisible] || [self alphaValue] == 0.0) {
89         [super close];
90         return;
91     }
92
93     [self orderOut: self animate: YES callback: invoc];
94 }
95
96 - (void)orderOut: (id)sender animate: (BOOL)animate
97 {
98     NSInvocation *invoc = [NSInvocation invocationWithMethodSignature:[super methodSignatureForSelector:@selector(orderOut:)]];
99     [invoc setTarget: self];
100     [invoc setArgument: sender atIndex: 0];
101     [self orderOut: sender animate: animate callback: invoc];
102 }
103
104 - (void)orderOut: (id)sender animate: (BOOL)animate callback:(NSInvocation *)callback
105 {
106     NSViewAnimation *anim;
107     NSViewAnimation *current_anim;
108     NSMutableDictionary *dict;
109
110     if (!animate) {
111         [self orderOut: sender];
112         return;
113     }
114
115     dict = [[NSMutableDictionary alloc] initWithCapacity:2];
116
117     [dict setObject:self forKey:NSViewAnimationTargetKey];
118
119     [dict setObject:NSViewAnimationFadeOutEffect forKey:NSViewAnimationEffectKey];
120     anim = [[NSViewAnimation alloc] initWithViewAnimations:[NSArray arrayWithObjects:dict, nil]];
121     [dict release];
122
123     [anim setAnimationBlockingMode:NSAnimationNonblocking];
124     [anim setDuration:0.9];
125     [anim setFrameRate:30];
126     [anim setUserInfo: callback];
127
128     @synchronized(self) {
129         current_anim = self->o_current_animation;
130
131         if ([[[current_anim viewAnimations] objectAtIndex:0] objectForKey: NSViewAnimationEffectKey] == NSViewAnimationFadeOutEffect && [current_anim isAnimating]) {
132             [anim release];
133         } else {
134             if (current_anim) {
135                 [current_anim stopAnimation];
136                 [anim setCurrentProgress:1.0 - [current_anim currentProgress]];
137                 [current_anim release];
138             }
139             else
140                 [anim setCurrentProgress:1.0 - [self alphaValue]];
141             self->o_current_animation = anim;
142             [anim startAnimation];
143         }
144     }
145 }
146
147 - (void)orderFront: (id)sender animate: (BOOL)animate
148 {
149     NSViewAnimation *anim;
150     NSViewAnimation *current_anim;
151     NSMutableDictionary *dict;
152
153     if (!animate) {
154         [super orderFront: sender];
155         [self setAlphaValue: 1.0];
156         return;
157     }
158
159     if (![self isVisible]) {
160         [self setAlphaValue: 0.0];
161         [super orderFront: sender];
162     }
163     else if ([self alphaValue] == 1.0) {
164         [super orderFront: self];
165         return;
166     }
167
168     dict = [[NSMutableDictionary alloc] initWithCapacity:2];
169
170     [dict setObject:self forKey:NSViewAnimationTargetKey];
171
172     [dict setObject:NSViewAnimationFadeInEffect forKey:NSViewAnimationEffectKey];
173     anim = [[NSViewAnimation alloc] initWithViewAnimations:[NSArray arrayWithObjects:dict, nil]];
174     [dict release];
175
176     [anim setAnimationBlockingMode:NSAnimationNonblocking];
177     [anim setDuration:0.5];
178     [anim setFrameRate:30];
179
180     @synchronized(self) {
181         current_anim = self->o_current_animation;
182
183         if ([[[current_anim viewAnimations] objectAtIndex:0] objectForKey: NSViewAnimationEffectKey] == NSViewAnimationFadeInEffect && [current_anim isAnimating]) {
184             [anim release];
185         } else {
186             if (current_anim) {
187                 [current_anim stopAnimation];
188                 [anim setCurrentProgress:1.0 - [current_anim currentProgress]];
189                 [current_anim release];
190             }
191             else
192                 [anim setCurrentProgress:[self alphaValue]];
193             self->o_current_animation = anim;
194             [self orderFront: sender];
195             [anim startAnimation];
196         }
197     }
198 }
199
200 - (void)animationDidEnd:(NSAnimation*)anim
201 {
202     if ([self alphaValue] <= 0.0) {
203         NSInvocation * invoc;
204         [super orderOut: nil];
205         [self setAlphaValue: 1.0];
206         if ((invoc = [anim userInfo]))
207             [invoc invoke];
208     }
209 }
210
211 @end
212
213
214 /*****************************************************************************
215  * VLCVideoWindowCommon
216  *
217  *  Common code for main window, detached window and extra video window
218  *****************************************************************************/
219
220 @implementation VLCVideoWindowCommon
221
222 #pragma mark -
223 #pragma mark Init
224
225 - (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)styleMask
226                   backing:(NSBackingStoreType)backingType defer:(BOOL)flag
227 {
228     b_dark_interface = config_GetInt(VLCIntf, "macosx-interfacestyle");
229
230     if (b_dark_interface) {
231         styleMask = NSBorderlessWindowMask;
232 #ifdef MAC_OS_X_VERSION_10_7
233         if (!OSX_SNOW_LEOPARD)
234             styleMask |= NSResizableWindowMask;
235 #endif
236     }
237
238     self = [super initWithContentRect:contentRect styleMask:styleMask
239                               backing:backingType defer:flag];
240
241     /* we want to be moveable regardless of our style */
242     [self setMovableByWindowBackground: YES];
243
244     return self;
245 }
246
247 - (void)setTitle:(NSString *)title
248 {
249     if (b_dark_interface && o_titlebar_view)
250         [o_titlebar_view setWindowTitle: title];
251
252     [super setTitle: title];
253 }
254
255 #pragma mark -
256 #pragma mark zoom / minimize / close
257
258 - (BOOL)validateMenuItem:(NSMenuItem *)menuItem
259 {
260     SEL s_menuAction = [menuItem action];
261
262     if ((s_menuAction == @selector(performClose:)) || (s_menuAction == @selector(performMiniaturize:)) || (s_menuAction == @selector(performZoom:)))
263         return YES;
264
265     return [super validateMenuItem:menuItem];
266 }
267
268 - (BOOL)windowShouldClose:(id)sender
269 {
270     return YES;
271 }
272
273 - (void)performClose:(id)sender
274 {
275     if (!([self styleMask] & NSTitledWindowMask)) {
276         [[NSNotificationCenter defaultCenter] postNotificationName:NSWindowWillCloseNotification object:self];
277
278         [self orderOut: sender];
279     } else
280         [super performClose: sender];
281 }
282
283 - (void)performMiniaturize:(id)sender
284 {
285     if (!([self styleMask] & NSTitledWindowMask))
286         [self miniaturize: sender];
287     else
288         [super performMiniaturize: sender];
289 }
290
291 - (void)performZoom:(id)sender
292 {
293     if (!([self styleMask] & NSTitledWindowMask))
294         [self customZoom: sender];
295     else
296         [super performZoom: sender];
297 }
298
299 - (void)zoom:(id)sender
300 {
301     if (!([self styleMask] & NSTitledWindowMask))
302         [self customZoom: sender];
303     else
304         [super zoom: sender];
305 }
306
307 /**
308  * Given a proposed frame rectangle, return a modified version
309  * which will fit inside the screen.
310  *
311  * This method is based upon NSWindow.m, part of the GNUstep GUI Library, licensed under LGPLv2+.
312  *    Authors:  Scott Christley <scottc@net-community.com>, Venkat Ajjanagadde <venkat@ocbi.com>,
313  *              Felipe A. Rodriguez <far@ix.netcom.com>, Richard Frith-Macdonald <richard@brainstorm.co.uk>
314  *    Copyright (C) 1996 Free Software Foundation, Inc.
315  */
316 - (NSRect) customConstrainFrameRect: (NSRect)frameRect toScreen: (NSScreen*)screen
317 {
318     NSRect screenRect = [screen visibleFrame];
319     float difference;
320
321     /* Move top edge of the window inside the screen */
322     difference = NSMaxY (frameRect) - NSMaxY (screenRect);
323     if (difference > 0) {
324         frameRect.origin.y -= difference;
325     }
326
327     /* If the window is resizable, resize it (if needed) so that the
328      bottom edge is on the screen or can be on the screen when the user moves
329      the window */
330     difference = NSMaxY (screenRect) - NSMaxY (frameRect);
331     if (_styleMask & NSResizableWindowMask) {
332         float difference2;
333
334         difference2 = screenRect.origin.y - frameRect.origin.y;
335         difference2 -= difference;
336         // Take in account the space between the top of window and the top of the
337         // screen which can be used to move the bottom of the window on the screen
338         if (difference2 > 0) {
339             frameRect.size.height -= difference2;
340             frameRect.origin.y += difference2;
341         }
342
343         /* Ensure that resizing doesn't makewindow smaller than minimum */
344         difference2 = [self minSize].height - frameRect.size.height;
345         if (difference2 > 0) {
346             frameRect.size.height += difference2;
347             frameRect.origin.y -= difference2;
348         }
349     }
350
351     return frameRect;
352 }
353
354 #define DIST 3
355
356 /**
357  Zooms the receiver.   This method calls the delegate method
358  windowShouldZoom:toFrame: to determine if the window should
359  be allowed to zoom to full screen.
360  *
361  * This method is based upon NSWindow.m, part of the GNUstep GUI Library, licensed under LGPLv2+.
362  *    Authors:  Scott Christley <scottc@net-community.com>, Venkat Ajjanagadde <venkat@ocbi.com>,
363  *              Felipe A. Rodriguez <far@ix.netcom.com>, Richard Frith-Macdonald <richard@brainstorm.co.uk>
364  *    Copyright (C) 1996 Free Software Foundation, Inc.
365  */
366 - (void) customZoom: (id)sender
367 {
368     NSRect maxRect = [[self screen] visibleFrame];
369     NSRect currentFrame = [self frame];
370
371     if ([[self delegate] respondsToSelector: @selector(windowWillUseStandardFrame:defaultFrame:)]) {
372         maxRect = [[self delegate] windowWillUseStandardFrame: self defaultFrame: maxRect];
373     }
374
375     maxRect = [self customConstrainFrameRect: maxRect toScreen: [self screen]];
376
377     // Compare the new frame with the current one
378     if ((abs(NSMaxX(maxRect) - NSMaxX(currentFrame)) < DIST)
379         && (abs(NSMaxY(maxRect) - NSMaxY(currentFrame)) < DIST)
380         && (abs(NSMinX(maxRect) - NSMinX(currentFrame)) < DIST)
381         && (abs(NSMinY(maxRect) - NSMinY(currentFrame)) < DIST)) {
382         // Already in zoomed mode, reset user frame, if stored
383         if ([self frameAutosaveName] != nil) {
384             [self setFrame: previousSavedFrame display: YES animate: YES];
385             [self saveFrameUsingName: [self frameAutosaveName]];
386         }
387         return;
388     }
389
390     if ([self frameAutosaveName] != nil) {
391         [self saveFrameUsingName: [self frameAutosaveName]];
392         previousSavedFrame = [self frame];
393     }
394
395     [self setFrame: maxRect display: YES animate: YES];
396 }
397
398 #pragma mark -
399 #pragma mark Accessibility stuff
400
401 - (NSArray *)accessibilityAttributeNames
402 {
403     if (!b_dark_interface || !o_titlebar_view)
404         return [super accessibilityAttributeNames];
405
406     static NSMutableArray *attributes = nil;
407     if (attributes == nil) {
408         attributes = [[super accessibilityAttributeNames] mutableCopy];
409         NSArray *appendAttributes = [NSArray arrayWithObjects: NSAccessibilitySubroleAttribute,
410                                      NSAccessibilityCloseButtonAttribute,
411                                      NSAccessibilityMinimizeButtonAttribute,
412                                      NSAccessibilityZoomButtonAttribute,
413                                      nil];
414
415         for(NSString *attribute in appendAttributes) {
416             if (![attributes containsObject:attribute])
417                 [attributes addObject:attribute];
418         }
419     }
420     return attributes;
421 }
422
423 - (id)accessibilityAttributeValue: (NSString*)o_attribute_name
424 {
425     if (b_dark_interface && o_titlebar_view) {
426         VLCMainWindowTitleView *o_tbv = o_titlebar_view;
427
428         if ([o_attribute_name isEqualTo: NSAccessibilitySubroleAttribute])
429             return NSAccessibilityStandardWindowSubrole;
430
431         if ([o_attribute_name isEqualTo: NSAccessibilityCloseButtonAttribute])
432             return [[o_tbv closeButton] cell];
433
434         if ([o_attribute_name isEqualTo: NSAccessibilityMinimizeButtonAttribute])
435             return [[o_tbv minimizeButton] cell];
436
437         if ([o_attribute_name isEqualTo: NSAccessibilityZoomButtonAttribute])
438             return [[o_tbv zoomButton] cell];
439     }
440
441     return [super accessibilityAttributeValue: o_attribute_name];
442 }
443
444 @end