summaryrefslogtreecommitdiffstats
path: root/src/plugins/platforms/cocoa/qcocoahelpers.mm
blob: fdf4733f0ef6ef3109d6536949aa74f0440cbf95 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <qpa/qplatformtheme.h>

#include "qcocoahelpers.h"
#include "qnsview.h"

#include <QtCore>
#include <QtGui>
#include <qpa/qplatformscreen.h>
#include <private/qguiapplication_p.h>
#include <private/qwindow_p.h>
#include <QtGui/private/qcoregraphics_p.h>

#ifndef QT_NO_WIDGETS
#include <QtWidgets/QWidget>
#endif

#include <algorithm>

QT_BEGIN_NAMESPACE

Q_LOGGING_CATEGORY(lcQpaCocoaWindow, "qt.qpa.cocoa.window");

//
// Conversion Functions
//

QStringList qt_mac_NSArrayToQStringList(void *nsarray)
{
    QStringList result;
    NSArray *array = static_cast<NSArray *>(nsarray);
    for (NSUInteger i=0; i<[array count]; ++i)
        result << QString::fromNSString([array objectAtIndex:i]);
    return result;
}

void *qt_mac_QStringListToNSMutableArrayVoid(const QStringList &list)
{
    NSMutableArray *result = [NSMutableArray arrayWithCapacity:list.size()];
    for (int i=0; i<list.size(); ++i){
        [result addObject:list[i].toNSString()];
    }
    return result;
}

struct dndenum_mapper
{
    NSDragOperation mac_code;
    Qt::DropAction qt_code;
    bool Qt2Mac;
};

static dndenum_mapper dnd_enums[] = {
    { NSDragOperationLink,  Qt::LinkAction, true },
    { NSDragOperationMove,  Qt::MoveAction, true },
    { NSDragOperationCopy,  Qt::CopyAction, true },
    { NSDragOperationGeneric,  Qt::CopyAction, false },
    { NSDragOperationEvery, Qt::ActionMask, false },
    { NSDragOperationNone, Qt::IgnoreAction, false }
};

NSDragOperation qt_mac_mapDropAction(Qt::DropAction action)
{
    for (int i=0; dnd_enums[i].qt_code; i++) {
        if (dnd_enums[i].Qt2Mac && (action & dnd_enums[i].qt_code)) {
            return dnd_enums[i].mac_code;
        }
    }
    return NSDragOperationNone;
}

NSDragOperation qt_mac_mapDropActions(Qt::DropActions actions)
{
    NSDragOperation nsActions = NSDragOperationNone;
    for (int i=0; dnd_enums[i].qt_code; i++) {
        if (dnd_enums[i].Qt2Mac && (actions & dnd_enums[i].qt_code))
            nsActions |= dnd_enums[i].mac_code;
    }
    return nsActions;
}

Qt::DropAction qt_mac_mapNSDragOperation(NSDragOperation nsActions)
{
    Qt::DropAction action = Qt::IgnoreAction;
    for (int i=0; dnd_enums[i].mac_code; i++) {
        if (nsActions & dnd_enums[i].mac_code)
            return dnd_enums[i].qt_code;
    }
    return action;
}

Qt::DropActions qt_mac_mapNSDragOperations(NSDragOperation nsActions)
{
    Qt::DropActions actions = Qt::IgnoreAction;

    for (int i=0; dnd_enums[i].mac_code; i++) {
        if (dnd_enums[i].mac_code == NSDragOperationEvery)
            continue;

        if (nsActions & dnd_enums[i].mac_code)
            actions |= dnd_enums[i].qt_code;
    }
    return actions;
}

/*!
    Returns the view cast to a QNSview if possible.

    If the view is not a QNSView, nil is returned, which is safe to
    send messages to, effectivly making [qnsview_cast(view) message]
    a no-op.

    For extra verbosity and clearer code, please consider checking
    that the platform window is not a foreign window before using
    this cast, via QPlatformWindow::isForeignWindow().

    Do not use this method soley to check for foreign windows, as
    that will make the code harder to read for people not working
    primarily on macOS, who do not know the difference between the
    NSView and QNSView cases.
*/
QNSView *qnsview_cast(NSView *view)
{
    if (![view isKindOfClass:[QNSView class]])
        return nil;

    return static_cast<QNSView *>(view);
}

//
// Misc
//

// Sets the activation policy for this process to NSApplicationActivationPolicyRegular,
// unless either LSUIElement or LSBackgroundOnly is set in the Info.plist.
void qt_mac_transformProccessToForegroundApplication()
{
    bool forceTransform = true;
    CFTypeRef value = CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(),
                                                           CFSTR("LSUIElement"));
    if (value) {
        CFTypeID valueType = CFGetTypeID(value);
        // Officially it's supposed to be a string, a boolean makes sense, so we'll check.
        // A number less so, but OK.
        if (valueType == CFStringGetTypeID())
            forceTransform = !(QString::fromCFString(static_cast<CFStringRef>(value)).toInt());
        else if (valueType == CFBooleanGetTypeID())
            forceTransform = !CFBooleanGetValue(static_cast<CFBooleanRef>(value));
        else if (valueType == CFNumberGetTypeID()) {
            int valueAsInt;
            CFNumberGetValue(static_cast<CFNumberRef>(value), kCFNumberIntType, &valueAsInt);
            forceTransform = !valueAsInt;
        }
    }

    if (forceTransform) {
        value = CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(),
                                                     CFSTR("LSBackgroundOnly"));
        if (value) {
            CFTypeID valueType = CFGetTypeID(value);
            if (valueType == CFBooleanGetTypeID())
                forceTransform = !CFBooleanGetValue(static_cast<CFBooleanRef>(value));
            else if (valueType == CFStringGetTypeID())
                forceTransform = !(QString::fromCFString(static_cast<CFStringRef>(value)).toInt());
            else if (valueType == CFNumberGetTypeID()) {
                int valueAsInt;
                CFNumberGetValue(static_cast<CFNumberRef>(value), kCFNumberIntType, &valueAsInt);
                forceTransform = !valueAsInt;
            }
        }
    }

    if (forceTransform) {
        [[NSApplication sharedApplication] setActivationPolicy:NSApplicationActivationPolicyRegular];
    }
}

QString qt_mac_applicationName()
{
    QString appName;
    CFTypeRef string = CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(), CFSTR("CFBundleName"));
    if (string)
        appName = QString::fromCFString(static_cast<CFStringRef>(string));

    if (appName.isEmpty()) {
        QString arg0 = QGuiApplicationPrivate::instance()->appName();
        if (arg0.contains("/")) {
            QStringList parts = arg0.split(QLatin1Char('/'));
            appName = parts.at(parts.count() - 1);
        } else {
            appName = arg0;
        }
    }
    return appName;
}

// -------------------------------------------------------------------------

/*!
    \fn QPointF qt_mac_flip(const QPointF &pos, const QRectF &reference)
    \fn QRectF qt_mac_flip(const QRectF &rect, const QRectF &reference)

    Flips the Y coordinate of the point/rect between quadrant I and IV.

    The native coordinate system on macOS uses quadrant I, with origin
    in bottom left, and Qt uses quadrant IV, with origin in top left.

    By flipping the Y coordinate, we can map the point/rect between
    the two coordinate systems.

    The flip is always in relation to a reference rectangle, e.g.
    the frame of the parent view, or the screen geometry. In the
    latter case the specialized QCocoaScreen::mapFrom/To functions
    should be used instead.
*/
QPointF qt_mac_flip(const QPointF &pos, const QRectF &reference)
{
    return QPointF(pos.x(), reference.height() - pos.y());
}

QRectF qt_mac_flip(const QRectF &rect, const QRectF &reference)
{
    return QRectF(qt_mac_flip(rect.bottomLeft(), reference), rect.size());
}

// -------------------------------------------------------------------------

Qt::MouseButton cocoaButton2QtButton(NSInteger buttonNum)
{
    if (buttonNum >= 0 && buttonNum <= 31)
        return Qt::MouseButton(1 << buttonNum);
    return Qt::NoButton;
}

QString qt_mac_removeAmpersandEscapes(QString s)
{
    return QPlatformTheme::removeMnemonics(s).trimmed();
}

QT_END_NAMESPACE

/*! \internal

    This NSView derived class is used to add OK/Cancel
    buttons to NSColorPanel and NSFontPanel. It replaces
    the panel's content view, while reparenting the former
    content view into itself. It also takes care of setting
    the target-action for the OK/Cancel buttons and making
    sure the layout is consistent.
 */
@implementation QNSPanelContentsWrapper

@synthesize okButton = _okButton;
@synthesize cancelButton = _cancelButton;
@synthesize panelContents = _panelContents;
@synthesize panelContentsMargins = _panelContentsMargins;

- (instancetype)initWithPanelDelegate:(id<QNSPanelDelegate>)panelDelegate
{
    if ((self = [super initWithFrame:NSZeroRect])) {
        // create OK and Cancel buttons and add these as subviews
        _okButton = [self createButtonWithTitle:"&OK"];
        _okButton.action = @selector(onOkClicked);
        _okButton.target = panelDelegate;

        _cancelButton = [self createButtonWithTitle:"Cancel"];
        _cancelButton.action = @selector(onCancelClicked);
        _cancelButton.target = panelDelegate;

        _panelContents = nil;

        _panelContentsMargins = NSEdgeInsetsMake(0, 0, 0, 0);
    }

    return self;
}

- (void)dealloc
{
    [_okButton release];
    _okButton = nil;
    [_cancelButton release];
    _cancelButton = nil;

    _panelContents = nil;

    [super dealloc];
}

- (NSButton *)createButtonWithTitle:(const char *)title
{
    NSButton *button = [[NSButton alloc] initWithFrame:NSZeroRect];
    button.buttonType = NSMomentaryLightButton;
    button.bezelStyle = NSRoundedBezelStyle;
    const QString &cleanTitle = QPlatformTheme::removeMnemonics(QCoreApplication::translate("QDialogButtonBox", title));
    // FIXME: Not obvious, from Cocoa's documentation, that QString::toNSString() makes a deep copy
    button.title = (NSString *)cleanTitle.toCFString();
    ((NSButtonCell *)button.cell).font =
            [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSRegularControlSize]];
    [self addSubview:button];
    return button;
}

- (void)layout
{
    static const CGFloat ButtonMinWidth = 78.0; // 84.0 for Carbon
    static const CGFloat ButtonMinHeight = 32.0;
    static const CGFloat ButtonSpacing = 0.0;
    static const CGFloat ButtonTopMargin = 0.0;
    static const CGFloat ButtonBottomMargin = 7.0;
    static const CGFloat ButtonSideMargin = 9.0;

    NSSize frameSize = self.frame.size;

    [self.okButton sizeToFit];
    NSSize okSizeHint = self.okButton.frame.size;

    [self.cancelButton sizeToFit];
    NSSize cancelSizeHint = self.cancelButton.frame.size;

    const CGFloat buttonWidth = qMin(qMax(ButtonMinWidth,
                                          qMax(okSizeHint.width, cancelSizeHint.width)),
                                     CGFloat((frameSize.width - 2.0 * ButtonSideMargin - ButtonSpacing) * 0.5));
    const CGFloat buttonHeight = qMax(ButtonMinHeight,
                                     qMax(okSizeHint.height, cancelSizeHint.height));

    NSRect okRect = { { frameSize.width - ButtonSideMargin - buttonWidth,
                        ButtonBottomMargin },
                      { buttonWidth, buttonHeight } };
    self.okButton.frame = okRect;
    self.okButton.needsDisplay = YES;

    NSRect cancelRect = { { okRect.origin.x - ButtonSpacing - buttonWidth,
                            ButtonBottomMargin },
                            { buttonWidth, buttonHeight } };
    self.cancelButton.frame = cancelRect;
    self.cancelButton.needsDisplay = YES;

    // The third view should be the original panel contents. Cache it.
    if (!self.panelContents)
        for (NSView *view in self.subviews)
            if (view != self.okButton && view != self.cancelButton) {
                _panelContents = view;
                break;
            }

    const CGFloat buttonBoxHeight = ButtonBottomMargin + buttonHeight + ButtonTopMargin;
    const NSRect panelContentsFrame = NSMakeRect(
                self.panelContentsMargins.left,
                buttonBoxHeight + self.panelContentsMargins.bottom,
                frameSize.width - (self.panelContentsMargins.left + self.panelContentsMargins.right),
                frameSize.height - buttonBoxHeight - (self.panelContentsMargins.top + self.panelContentsMargins.bottom));
    self.panelContents.frame = panelContentsFrame;
    self.panelContents.needsDisplay = YES;

    self.needsDisplay = YES;
    [super layout];
}

// -------------------------------------------------------------------------

io_object_t q_IOObjectRetain(io_object_t obj)
{
    kern_return_t ret = IOObjectRetain(obj);
    Q_ASSERT(!ret);
    return obj;
}

void q_IOObjectRelease(io_object_t obj)
{
    kern_return_t ret = IOObjectRelease(obj);
    Q_ASSERT(!ret);
}

@end