Mercurial Mercurial > oss > MCL > sf > mw > qt / comparison
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
examples/widgets/tablet/tabletcanvas.cpp
changeset 3 41300fa6a67c
parent 0 1918ee327afb
child 4 3b1da2848fc7
equal deleted inserted replaced
2:56cd8111b7f7 3:41300fa6a67c 
    48 TabletCanvas::TabletCanvas()
 
    48 TabletCanvas::TabletCanvas()
 
    49 {
 
    49 {
 
    50     resize(500, 500);
 
    50     resize(500, 500);
 
    51     myBrush = QBrush();
 
    51     myBrush = QBrush();
 
    52     myPen = QPen();
 
    52     myPen = QPen();
 
    53     initImage();
 
    53     initPixmap();
 
    54     setAutoFillBackground(true);
 
    54     setAutoFillBackground(true);
 
    55     deviceDown = false;
 
    55     deviceDown = false;
 
    56     myColor = Qt::red;
 
    56     myColor = Qt::red;
 
    57     myTabletDevice = QTabletEvent::Stylus;
 
    57     myTabletDevice = QTabletEvent::Stylus;
 
    58     alphaChannelType = NoAlpha;
 
    58     alphaChannelType = NoAlpha;
 
    59     colorSaturationType = NoSaturation;
 
    59     colorSaturationType = NoSaturation;
 
    60     lineWidthType = LineWidthPressure;
 
    60     lineWidthType = LineWidthPressure;
 
    61 }
 
    61 }
 
    62 
    62 
    63 void TabletCanvas::initImage()
 
    63 void TabletCanvas::initPixmap()
 
    64 {
 
    64 {
 
    65     QImage newImage = QImage(width(), height(), QImage::Format_ARGB32);
 
    65     QPixmap newPixmap = QPixmap(width(), height());
 
    66     QPainter painter(&newImage);
 
    66     newPixmap.fill(Qt::white);
 
    67     painter.fillRect(0, 0, newImage.width(), newImage.height(), Qt::white);
 
    67     QPainter painter(&newPixmap);
 
    68     if (!image.isNull())
 
    68     if (!pixmap.isNull())
 
    69         painter.drawImage(0, 0, image);
 
    69         painter.drawPixmap(0, 0, pixmap);
 
    70     painter.end();
 
    70     painter.end();
 
    71     image = newImage;
 
    71     pixmap = newPixmap;
 
    72 }
 
    72 }
 
    73 //! [0]
 
    73 //! [0]
 
    74 
    74 
    75 //! [1]
 
    75 //! [1]
 
    76 bool TabletCanvas::saveImage(const QString &file)
 
    76 bool TabletCanvas::saveImage(const QString &file)
 
    77 {
 
    77 {
 
    78     return image.save(file);
 
    78     return pixmap.save(file);
 
    79 }
 
    79 }
 
    80 //! [1]
 
    80 //! [1]
 
    81 
    81 
    82 //! [2]
 
    82 //! [2]
 
    83 bool TabletCanvas::loadImage(const QString &file)
 
    83 bool TabletCanvas::loadImage(const QString &file)
 
    84 {
 
    84 {
 
    85     bool success = image.load(file);
 
    85     bool success = pixmap.load(file);
 
    86 
    86 
    87     if (success) {
 
    87     if (success) {
 
    88         update();
 
    88         update();
 
    89         return true;
 
    89         return true;
 
    90     }
 
    90     }
 
   112             polyLine[1] = polyLine[0];
 
   112             polyLine[1] = polyLine[0];
 
   113             polyLine[0] = event->pos();
 
   113             polyLine[0] = event->pos();
 
   114 
   114 
   115             if (deviceDown) {
 
   115             if (deviceDown) {
 
   116                 updateBrush(event);
 
   116                 updateBrush(event);
 
   117                 QPainter painter(&image);
 
   117                 QPainter painter(&pixmap);
 
   118                 paintImage(painter, event);
 
   118                 paintPixmap(painter, event);
 
   119             }
 
   119             }
 
   120             break;
 
   120             break;
 
   121         default:
 
   121         default:
 
   122             break;
 
   122             break;
 
   123     }
 
   123     }
 
   127 
   127 
   128 //! [4]
 
   128 //! [4]
 
   129 void TabletCanvas::paintEvent(QPaintEvent *)
 
   129 void TabletCanvas::paintEvent(QPaintEvent *)
 
   130 {
 
   130 {
 
   131     QPainter painter(this);
 
   131     QPainter painter(this);
 
   132     painter.drawImage(QPoint(0, 0), image);
 
   132     painter.drawPixmap(0, 0, pixmap);
 
   133 }
 
   133 }
 
   134 //! [4]
 
   134 //! [4]
 
   135 
   135 
   136 //! [5]
 
   136 //! [5]
 
   137 void TabletCanvas::paintImage(QPainter &painter, QTabletEvent *event)
 
   137 void TabletCanvas::paintPixmap(QPainter &painter, QTabletEvent *event)
 
   138 {
 
   138 {
 
   139     QPoint brushAdjust(10, 10);
 
   139     QPoint brushAdjust(10, 10);
 
   140 
   140 
   141     switch (myTabletDevice) {
 
   141     switch (myTabletDevice) {
 
   142         case QTabletEvent::Airbrush:
 
   142         case QTabletEvent::Airbrush:
 
   269 }
 
   269 }
 
   270 //! [11]
 
   270 //! [11]
 
   271 
   271 
   272 void TabletCanvas::resizeEvent(QResizeEvent *)
 
   272 void TabletCanvas::resizeEvent(QResizeEvent *)
 
   273 {
 
   273 {
 
   274     initImage();
 
   274     initPixmap();
 
   275     polyLine[0] = polyLine[1] = polyLine[2] = QPoint();
 
   275     polyLine[0] = polyLine[1] = polyLine[2] = QPoint();
 
   276 }
 
   276 }
MCL/sf/mw/qt