aboutsummaryrefslogtreecommitdiffstats
path: root/src/quick/items/qquickanimatedimage.cpp
blob: 075c4a7d72c32c584f2d83119cefaab4f134e92f (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
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module 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 "qquickanimatedimage_p.h"
#include "qquickanimatedimage_p_p.h"

#include <QtGui/qguiapplication.h>
#include <QtQml/qqmlinfo.h>
#include <QtQml/qqmlfile.h>
#include <QtQml/qqmlengine.h>
#include <QtGui/qmovie.h>
#if QT_CONFIG(qml_network)
#include <QtNetwork/qnetworkrequest.h>
#include <QtNetwork/qnetworkreply.h>
#endif

QT_BEGIN_NAMESPACE

QQuickPixmap* QQuickAnimatedImagePrivate::infoForCurrentFrame(QQmlEngine *engine)
{
    if (!movie)
        return nullptr;

    int current = movie->currentFrameNumber();
    if (!frameMap.contains(current)) {
        QUrl requestedUrl;
        QQuickPixmap *pixmap = nullptr;
        if (engine && !movie->fileName().isEmpty()) {
            requestedUrl.setUrl(QString::fromUtf8("quickanimatedimage://%1#%2")
                                .arg(movie->fileName())
                                .arg(current));
        }
        if (!requestedUrl.isEmpty()) {
            if (QQuickPixmap::isCached(requestedUrl, QSize(), QQuickImageProviderOptions()))
                pixmap = new QQuickPixmap(engine, requestedUrl);
            else
                pixmap = new QQuickPixmap(requestedUrl, movie->currentImage());
        } else {
            pixmap = new QQuickPixmap;
            pixmap->setImage(movie->currentImage());
        }
        frameMap.insert(current, pixmap);
    }

    return frameMap.value(current);
}

/*!
    \qmltype AnimatedImage
    \instantiates QQuickAnimatedImage
    \inqmlmodule QtQuick
    \inherits Image
    \brief Plays animations stored as a series of images
    \ingroup qtquick-visual

    The AnimatedImage type extends the features of the \l Image type, providing
    a way to play animations stored as images containing a series of frames,
    such as those stored in GIF files.

    Information about the current frame and total length of the animation can be
    obtained using the \l currentFrame and \l frameCount properties. You can
    start, pause and stop the animation by changing the values of the \l playing
    and \l paused properties.

    The full list of supported formats can be determined with QMovie::supportedFormats().

    \section1 Example Usage

    \beginfloatleft
    \image animatedimageitem.gif
    \endfloat

    The following QML shows how to display an animated image and obtain information
    about its state, such as the current frame and total number of frames.
    The result is an animated image with a simple progress indicator underneath it.

    \b Note: When animated images are cached, every frame of the animation will be cached.

    Set cache to false if you are playing a long or large animation and you
    want to conserve memory.

    If the image data comes from a sequential device (e.g. a socket),
    AnimatedImage can only loop if cache is set to true.

    \clearfloat
    \snippet qml/animatedimage.qml document

    \sa BorderImage, Image
*/

/*!
    \qmlproperty url QtQuick::AnimatedImage::source

    This property holds the URL that refers to the source image.

    AnimatedImage can handle any image format supported by Qt, loaded from any
    URL scheme supported by Qt.

    \sa QQuickImageProvider
*/

QQuickAnimatedImage::QQuickAnimatedImage(QQuickItem *parent)
    : QQuickImage(*(new QQuickAnimatedImagePrivate), parent)
{
    connect(this, &QQuickImageBase::cacheChanged, this, &QQuickAnimatedImage::onCacheChanged);
}

QQuickAnimatedImage::~QQuickAnimatedImage()
{
    Q_D(QQuickAnimatedImage);
#if QT_CONFIG(qml_network)
    if (d->reply)
        d->reply->deleteLater();
#endif
    delete d->movie;
    qDeleteAll(d->frameMap);
    d->frameMap.clear();
}

/*!
  \qmlproperty bool QtQuick::AnimatedImage::paused
  This property holds whether the animated image is paused.

  By default, this property is false. Set it to true when you want to pause
  the animation.
*/

bool QQuickAnimatedImage::isPaused() const
{
    Q_D(const QQuickAnimatedImage);
    if (!d->movie)
        return d->paused;
    return d->movie->state()==QMovie::Paused;
}

void QQuickAnimatedImage::setPaused(bool pause)
{
    Q_D(QQuickAnimatedImage);
    if (pause == d->paused)
        return;
    if (!d->movie) {
        d->paused = pause;
        emit pausedChanged();
    } else {
        d->movie->setPaused(pause);
    }
}

/*!
  \qmlproperty bool QtQuick::AnimatedImage::playing
  This property holds whether the animated image is playing.

  By default, this property is true, meaning that the animation
  will start playing immediately.

  \b Note: this property is affected by changes to the actual playing
  state of AnimatedImage. If non-animated images are used, \a playing
  will need to be manually set to \a true in order to animate
  following images.
  \qml
  AnimatedImage {
      onStatusChanged: playing = (status == AnimatedImage.Ready)
  }
  \endqml
*/

bool QQuickAnimatedImage::isPlaying() const
{
    Q_D(const QQuickAnimatedImage);
    if (!d->movie)
        return d->playing;
    return d->movie->state()!=QMovie::NotRunning;
}

void QQuickAnimatedImage::setPlaying(bool play)
{
    Q_D(QQuickAnimatedImage);
    if (play == d->playing)
        return;
    if (!d->movie) {
        d->playing = play;
        emit playingChanged();
        return;
    }
    if (play)
        d->movie->start();
    else
        d->movie->stop();
}

/*!
  \qmlproperty int QtQuick::AnimatedImage::currentFrame
  \qmlproperty int QtQuick::AnimatedImage::frameCount

  currentFrame is the frame that is currently visible. By monitoring this property
  for changes, you can animate other items at the same time as the image.

  frameCount is the number of frames in the animation. For some animation formats,
  frameCount is unknown and has a value of zero.
*/
int QQuickAnimatedImage::currentFrame() const
{
    Q_D(const QQuickAnimatedImage);
    if (!d->movie)
        return d->presetCurrentFrame;
    return d->movie->currentFrameNumber();
}

void QQuickAnimatedImage::setCurrentFrame(int frame)
{
    Q_D(QQuickAnimatedImage);
    if (!d->movie) {
        d->presetCurrentFrame = frame;
        return;
    }
    d->movie->jumpToFrame(frame);
}

int QQuickAnimatedImage::frameCount() const
{
    Q_D(const QQuickAnimatedImage);
    if (!d->movie)
        return 0;
    return d->movie->frameCount();
}

/*!
    \qmlproperty real QtQuick::AnimatedImage::speed
    \since QtQuick 2.11

    This property holds the speed of the animation.

    The speed is measured in percentage of the original animated image speed.
    The default speed is 1.0 (original speed).
*/
qreal QQuickAnimatedImage::speed() const
{
    Q_D(const QQuickAnimatedImage);
    return d->speed;
}

void QQuickAnimatedImage::setSpeed(qreal speed)
{
    Q_D(QQuickAnimatedImage);
    if (d->speed != speed) {
        d->speed = speed;
        if (d->movie)
            d->movie->setSpeed(qRound(speed * 100.0));
        emit speedChanged();
    }
}

void QQuickAnimatedImage::setSource(const QUrl &url)
{
    Q_D(QQuickAnimatedImage);
    if (url == d->url)
        return;

#if QT_CONFIG(qml_network)
    if (d->reply) {
        d->reply->deleteLater();
        d->reply = nullptr;
    }
#endif

    d->setImage(QImage());
    qDeleteAll(d->frameMap);
    d->frameMap.clear();

    d->oldPlaying = isPlaying();
    d->setMovie(nullptr);
    d->url = url;
    emit sourceChanged(d->url);

    if (isComponentComplete())
        load();
}

void QQuickAnimatedImage::load()
{
    Q_D(QQuickAnimatedImage);

    if (d->url.isEmpty()) {
        if (d->progress != 0) {
            d->progress = 0;
            emit progressChanged(d->progress);
        }

        d->setImage(QImage());
        d->status = Null;
        emit statusChanged(d->status);

        d->currentSourceSize = QSize(0, 0);
        if (d->currentSourceSize != d->oldSourceSize) {
            d->oldSourceSize = d->currentSourceSize;
            emit sourceSizeChanged();
        }
        if (isPlaying() != d->oldPlaying)
            emit playingChanged();
    } else {
        const qreal targetDevicePixelRatio = (window() ? window()->effectiveDevicePixelRatio() : qApp->devicePixelRatio());
        d->devicePixelRatio = 1.0;

        QUrl loadUrl = d->url;
        resolve2xLocalFile(d->url, targetDevicePixelRatio, &loadUrl, &d->devicePixelRatio);
        QString lf = QQmlFile::urlToLocalFileOrQrc(loadUrl);

        if (!lf.isEmpty()) {
            d->setMovie(new QMovie(lf));
            movieRequestFinished();
        } else {
#if QT_CONFIG(qml_network)
            if (d->status != Loading) {
                d->status = Loading;
                emit statusChanged(d->status);
            }
            if (d->progress != 0) {
                d->progress = 0;
                emit progressChanged(d->progress);
            }
            QNetworkRequest req(d->url);
            req.setAttribute(QNetworkRequest::HttpPipeliningAllowedAttribute, true);

            d->reply = qmlEngine(this)->networkAccessManager()->get(req);
            connect(d->reply, &QNetworkReply::finished, this, &QQuickAnimatedImage::movieRequestFinished);
            connect(d->reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(requestProgress(qint64,qint64)));
#endif
        }
    }
}

#define ANIMATEDIMAGE_MAXIMUM_REDIRECT_RECURSION 16

void QQuickAnimatedImage::movieRequestFinished()
{

    Q_D(QQuickAnimatedImage);

#if QT_CONFIG(qml_network)
    if (d->reply) {
        d->redirectCount++;
        if (d->redirectCount < ANIMATEDIMAGE_MAXIMUM_REDIRECT_RECURSION) {
            QVariant redirect = d->reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
            if (redirect.isValid()) {
                QUrl url = d->reply->url().resolved(redirect.toUrl());
                d->reply->deleteLater();
                setSource(url);
                return;
            }
        }

        d->redirectCount=0;
        d->setMovie(new QMovie(d->reply));
    }
#endif

    if (!d->movie || !d->movie->isValid()) {
        qmlWarning(this) << "Error Reading Animated Image File " << d->url.toString();
        d->setMovie(nullptr);
        d->setImage(QImage());
        if (d->progress != 0) {
            d->progress = 0;
            emit progressChanged(d->progress);
        }
        d->status = Error;
        emit statusChanged(d->status);

        d->currentSourceSize = QSize(0, 0);
        if (d->currentSourceSize != d->oldSourceSize) {
            d->oldSourceSize = d->currentSourceSize;
            emit sourceSizeChanged();
        }
        if (isPlaying() != d->oldPlaying)
            emit playingChanged();
        return;
    }

    connect(d->movie, &QMovie::stateChanged, this, &QQuickAnimatedImage::playingStatusChanged);
    connect(d->movie, &QMovie::frameChanged, this, &QQuickAnimatedImage::movieUpdate);
    if (d->cache)
        d->movie->setCacheMode(QMovie::CacheAll);
    d->movie->setSpeed(qRound(d->speed * 100.0));

    d->status = Ready;
    emit statusChanged(d->status);

    if (d->progress != 1.0) {
        d->progress = 1.0;
        emit progressChanged(d->progress);
    }

    bool pausedAtStart = d->paused;
    if (d->movie && d->playing)
        d->movie->start();
    if (d->movie && pausedAtStart)
        d->movie->setPaused(true);
    if (d->movie && (d->paused || !d->playing)) {
        d->movie->jumpToFrame(d->presetCurrentFrame);
        d->presetCurrentFrame = 0;
    }

    QQuickPixmap *pixmap = d->infoForCurrentFrame(qmlEngine(this));
    if (pixmap)
        d->setPixmap(*pixmap);

    if (isPlaying() != d->oldPlaying)
        emit playingChanged();

    if (d->movie)
        d->currentSourceSize = d->movie->currentPixmap().size();
    else
        d->currentSourceSize = QSize(0, 0);

    if (d->currentSourceSize != d->oldSourceSize) {
        d->oldSourceSize = d->currentSourceSize;
        emit sourceSizeChanged();
    }
}

void QQuickAnimatedImage::movieUpdate()
{
    Q_D(QQuickAnimatedImage);

    if (!d->cache) {
        qDeleteAll(d->frameMap);
        d->frameMap.clear();
    }

    if (d->movie) {
        d->setPixmap(*d->infoForCurrentFrame(qmlEngine(this)));
        emit frameChanged();
    }
}

void QQuickAnimatedImage::playingStatusChanged()
{
    Q_D(QQuickAnimatedImage);

    if ((d->movie->state() != QMovie::NotRunning) != d->playing) {
        d->playing = (d->movie->state() != QMovie::NotRunning);
        emit playingChanged();
    }
    if ((d->movie->state() == QMovie::Paused) != d->paused) {
        d->paused = (d->movie->state() == QMovie::Paused);
        emit pausedChanged();
    }
}

void QQuickAnimatedImage::onCacheChanged()
{
    Q_D(QQuickAnimatedImage);
    if (!cache()) {
        qDeleteAll(d->frameMap);
        d->frameMap.clear();
        if (d->movie)
            d->movie->setCacheMode(QMovie::CacheNone);
    } else {
        if (d->movie)
            d->movie->setCacheMode(QMovie::CacheAll);
    }
}

QSize QQuickAnimatedImage::sourceSize()
{
    Q_D(QQuickAnimatedImage);
    return d->currentSourceSize;
}

void QQuickAnimatedImage::componentComplete()
{
    QQuickItem::componentComplete(); // NOT QQuickImage
    load();
}

void QQuickAnimatedImagePrivate::setMovie(QMovie *m)
{
    if (movie == m)
        return;
    Q_Q(QQuickAnimatedImage);
    const int oldFrameCount = q->frameCount();

    if (movie) {
        movie->disconnect();
        movie->deleteLater();
    }
    movie = m;

    if (oldFrameCount != q->frameCount())
        emit q->frameCountChanged();
}

QT_END_NAMESPACE

#include "moc_qquickanimatedimage_p.cpp"