imageScribble::imageScribble(QObject * Parent=0):
m_painting(false){
// m_qimage= QImage(1280,768,QImage::Format_ARGB32);
m_qimage= QImage(768,1280,QImage::Format_ARGB32);
clearImage();
myPenColors
<< QColor("green")
<< QColor("purple")
<< QColor("red")
<< QColor("blue")
<< QColor("yellow")
<< QColor("pink")
<< QColor("orange")
<< QColor("brown")
<< QColor("grey")
<< QColor("black");
}
// Setter for Properties
void imageScribble::setObject(const QString &object) {
if (m_object == object)
return;
m_object = object;
emit objectChanged();
updateImage();
}
//! [1]
void imageScribble::setPainting(bool painting) {
if (m_painting == painting)
return;
m_painting = painting;
emit paintingChanged();
}
//! [1]
// Properties
bool imageScribble::painting() const {
return m_painting;
}
QString imageScribble::object() const {
return m_object;
}
QRectF imageScribble::layoutFrame() const {
return m_layoutFrame;
}
bb::cascades::Image imageScribble::image() const {
return m_image;
}
/*
* Return the size we need for the image that is to be replicated
*/
//! [4]
QSize imageScribble::desiredBoardSize() const {
const int numPixelsX = workingImageSize.width();
const int numPixelsY = workingImageSize.height();
return QSize(numPixelsX, numPixelsY);
}
//! [4]
/*
* Update the ImageView with the replicated stamps or images
*/
//! [5]
void imageScribble::updateImage() {
const QImage finalImage = m_qimage.rgbSwapped();
const bb::ImageData imageData = bb::ImageData::fromPixels(finalImage.bits(),
// bb::PixelFormat::RGBX, finalImage.width(), finalImage.height(),
bb::PixelFormat::RGBA_Premultiplied, finalImage.width(), finalImage.height(),
finalImage.bytesPerLine());
m_image = bb::cascades::Image(imageData);
emit imageChanged();
}
void imageScribble::clearImage(){
m_qimage.fill(qRgba(0,0,0,0));
// modified = true;
updateImage();
}
//
// Slots
//
void imageScribble::onImageTouch(bb::cascades::TouchEvent *event) {
if(m_painting){
float imagex = event->windowX()/m_layoutFrame.width()*m_qimage.width();
float imagey = event->windowY()/m_layoutFrame.height()*m_qimage.height();
QPointF imagexy(imagex,imagey);
QPainter painter(&m_qimage);
if (event->isDown()) {
// painter.setPen(Qt::NoPen);
// painter.setBrush(myPenColors.at(1 % myPenColors.count()));
// painter.drawEllipse(QPointF(x,y),5,5);
m_qpointf=imagexy;
}
else if (event->isMove()){
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setPen(QPen(Qt::darkRed, 10));
painter.drawLine(m_qpointf, imagexy);
m_qpointf=imagexy;
}
else if (event->isUp()){
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setPen(QPen(Qt::darkRed, 10));
painter.drawLine(m_qpointf, imagexy);
// painter.drawEllipse(QPointF(x,y),5,5);
// painter.end();
}
updateImage();
}
}
void imageScribble::handleLayoutFrameUpdated(QRectF layoutFrame){
if (m_layoutFrame==layoutFrame)
return;
m_layoutFrame = layoutFrame;
emit layoutFrameChanged();
// updateImage();
}
Here's an alternate way however I too am having response issues. Haven't had a chance to optimize it yet. Thought it was the TouchEvent response time when using signal/slot that was causing the lag - but just haven't had a chance to look into it further. I would be interested in hearing how you accomplished it.
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If you find my post helpful please "like" it and "accept as a solution"
