src/qtquick1/graphicsitems/qdeclarativeimagebase.cpp

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  41
  42 #include "QtQuick1/private/qdeclarativeimagebase_p.h"
  43 #include "QtQuick1/private/qdeclarativeimagebase_p_p.h"
  44
  45 #include <QtDeclarative/qdeclarativeengine.h>
  46 #include <QtDeclarative/qdeclarativeinfo.h>
  47 #include <QtQuick1/private/qdeclarativepixmapcache_p.h>
  48
  49 QT_BEGIN_NAMESPACE
  50
  51
  52
  53 QDeclarative1ImageBase::QDeclarative1ImageBase(QDeclarativeItem *parent)
  54   : QDeclarative1ImplicitSizeItem(*(new QDeclarative1ImageBasePrivate), parent)
  55 {
  56 }
  57
  58 QDeclarative1ImageBase::QDeclarative1ImageBase(QDeclarative1ImageBasePrivate &dd, QDeclarativeItem *parent)
  59   : QDeclarative1ImplicitSizeItem(dd, parent)
  60 {
  61 }
  62
  63 QDeclarative1ImageBase::~QDeclarative1ImageBase()
  64 {
  65 }
  66
  67 QDeclarative1ImageBase::Status QDeclarative1ImageBase::status() const
  68 {
  69     Q_D(const QDeclarative1ImageBase);
  70     return d->status;
  71 }
  72
  73
  74 qreal QDeclarative1ImageBase::progress() const
  75 {
  76     Q_D(const QDeclarative1ImageBase);
  77     return d->progress;
  78 }
  79
  80
  81 bool QDeclarative1ImageBase::asynchronous() const
  82 {
  83     Q_D(const QDeclarative1ImageBase);
  84     return d->async;
  85 }
  86
  87 void QDeclarative1ImageBase::setAsynchronous(bool async)
  88 {
  89     Q_D(QDeclarative1ImageBase);
  90     if (d->async != async) {
  91         d->async = async;
  92         emit asynchronousChanged();
  93     }
  94 }
  95
  96 QUrl QDeclarative1ImageBase::source() const
  97 {
  98     Q_D(const QDeclarative1ImageBase);
  99     return d->url;
 100 }
 101
 102 void QDeclarative1ImageBase::setSource(const QUrl &url)
 103 {
 104     Q_D(QDeclarative1ImageBase);
 105     //equality is fairly expensive, so we bypass for simple, common case
 106     if ((d->url.isEmpty() == url.isEmpty()) && url == d->url)
 107         return;
 108
 109     d->url = url;
 110     emit sourceChanged(d->url);
 111
 112     if (isComponentComplete())
 113         load();
 114 }
 115
 116 void QDeclarative1ImageBase::setSourceSize(const QSize& size)
 117 {
 118     Q_D(QDeclarative1ImageBase);
 119     if (d->sourcesize == size)
 120         return;
 121
 122     d->sourcesize = size;
 123     d->explicitSourceSize = true;
 124     emit sourceSizeChanged();
 125     if (isComponentComplete())
 126         load();
 127 }
 128
 129 QSize QDeclarative1ImageBase::sourceSize() const
 130 {
 131     Q_D(const QDeclarative1ImageBase);
 132
 133     int width = d->sourcesize.width();
 134     int height = d->sourcesize.height();
 135     return QSize(width != -1 ? width : d->pix.width(), height != -1 ? height : d->pix.height());
 136 }
 137
 138 void QDeclarative1ImageBase::resetSourceSize()
 139 {
 140     Q_D(QDeclarative1ImageBase);
 141     if (!d->explicitSourceSize)
 142         return;
 143     d->explicitSourceSize = false;
 144     d->sourcesize = QSize();
 145     emit sourceSizeChanged();
 146     if (isComponentComplete())
 147         load();
 148 }
 149
 150 bool QDeclarative1ImageBase::cache() const
 151 {
 152     Q_D(const QDeclarative1ImageBase);
 153     return d->cache;
 154 }
 155
 156 void QDeclarative1ImageBase::setCache(bool cache)
 157 {
 158     Q_D(QDeclarative1ImageBase);
 159     if (d->cache == cache)
 160         return;
 161
 162     d->cache = cache;
 163     emit cacheChanged();
 164     if (isComponentComplete())
 165         load();
 166 }
 167
 168 void QDeclarative1ImageBase::setMirror(bool mirror)
 169 {
 170     Q_D(QDeclarative1ImageBase);
 171     if (mirror == d->mirror)
 172         return;
 173
 174     d->mirror = mirror;
 175
 176     if (isComponentComplete())
 177         update();
 178
 179     emit mirrorChanged();
 180 }
 181
 182 bool QDeclarative1ImageBase::mirror() const
 183 {
 184     Q_D(const QDeclarative1ImageBase);
 185     return d->mirror;
 186 }
 187
 188 void QDeclarative1ImageBase::load()
 189 {
 190     Q_D(QDeclarative1ImageBase);
 191
 192     if (d->url.isEmpty()) {
 193         d->pix.clear(this);
 194         d->status = Null;
 195         d->progress = 0.0;
 196         pixmapChange();
 197         emit progressChanged(d->progress);
 198         emit statusChanged(d->status);
 199         update();
 200     } else {
 201         QDeclarative1Pixmap::Options options;
 202         if (d->async)
 203             options |= QDeclarative1Pixmap::Asynchronous;
 204         if (d->cache)
 205             options |= QDeclarative1Pixmap::Cache;
 206         d->pix.clear(this);
 207         d->pix.load(qmlEngine(this), d->url, d->explicitSourceSize ? sourceSize() : QSize(), options);
 208
 209         if (d->pix.isLoading()) {
 210             d->progress = 0.0;
 211             d->status = Loading;
 212             emit progressChanged(d->progress);
 213             emit statusChanged(d->status);
 214
 215             static int thisRequestProgress = -1;
 216             static int thisRequestFinished = -1;
 217             if (thisRequestProgress == -1) {
 218                 thisRequestProgress =
 219                     QDeclarative1ImageBase::staticMetaObject.indexOfSlot("requestProgress(qint64,qint64)");
 220                 thisRequestFinished =
 221                     QDeclarative1ImageBase::staticMetaObject.indexOfSlot("requestFinished()");
 222             }
 223
 224             d->pix.connectFinished(this, thisRequestFinished);
 225             d->pix.connectDownloadProgress(this, thisRequestProgress);
 226
 227         } else {
 228             requestFinished();
 229         }
 230     }
 231 }
 232
 233 void QDeclarative1ImageBase::requestFinished()
 234 {
 235     Q_D(QDeclarative1ImageBase);
 236
 237     QDeclarative1ImageBase::Status oldStatus = d->status;
 238     qreal oldProgress = d->progress;
 239
 240     if (d->pix.isError()) {
 241         d->status = Error;
 242         qmlInfo(this) << d->pix.error();
 243     } else {
 244         d->status = Ready;
 245     }
 246
 247     d->progress = 1.0;
 248
 249     pixmapChange();
 250
 251     if (d->sourcesize.width() != d->pix.width() || d->sourcesize.height() != d->pix.height())
 252         emit sourceSizeChanged();
 253
 254     if (d->status != oldStatus)
 255         emit statusChanged(d->status);
 256     if (d->progress != oldProgress)
 257         emit progressChanged(d->progress);
 258
 259     update();
 260 }
 261
 262 void QDeclarative1ImageBase::requestProgress(qint64 received, qint64 total)
 263 {
 264     Q_D(QDeclarative1ImageBase);
 265     if (d->status == Loading && total > 0) {
 266         d->progress = qreal(received)/total;
 267         emit progressChanged(d->progress);
 268     }
 269 }
 270
 271 void QDeclarative1ImageBase::componentComplete()
 272 {
 273     Q_D(QDeclarative1ImageBase);
 274     QDeclarativeItem::componentComplete();
 275     if (d->url.isValid())
 276         load();
 277 }
 278
 279 void QDeclarative1ImageBase::pixmapChange()
 280 {
 281     Q_D(QDeclarative1ImageBase);
 282     setImplicitWidth(d->pix.width());
 283     setImplicitHeight(d->pix.height());
 284 }
 285
 286
 287
 288 QT_END_NAMESPACE