iiiypuk/cantata
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Set opacity on image, not on painter

Browse Source
This commit is contained in:
craig.p.drummond
2013-06-25 18:03:15 +00:00
parent 9329dd7dca
commit e8b3d8ad9d
1 changed files with 20 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
context/contextwidget.cpp
View File

@@ -63,12 +63,23 @@ void ContextWidget::enableDebug()
//const QLatin1String ContextWidget::constHtbApiKey(0); // API key required
const QLatin1String ContextWidget::constFanArtApiKey("ee86404cb429fa27ac32a1a3c117b006");
const QLatin1String ContextWidget::constCacheDir("backdrops/");
static const double constBgndOpacity=0.15;
static QString cacheFileName(const QString &artist, bool createDir)
{
return Utils::cacheDir(ContextWidget::constCacheDir, createDir)+Covers::encodeName(artist)+".jpg";
}
static QImage setOpacity(const QImage &orig)
{
QImage img=QImage::Format_ARGB32==orig.format() ? orig : orig.convertToFormat(QImage::Format_ARGB32);
uchar *bits = img.bits();
for (int i = 0; i < img.height()*img.bytesPerLine(); i+=4) {
bits[i+3] = constBgndOpacity*255;
}
return img;
}
static QColor splitterColor;
class ThinSplitterHandle : public QSplitterHandle
@@ -409,11 +420,15 @@ void ContextWidget::paintEvent(QPaintEvent *e)
}
if (drawBackdrop) {
if (!oldBackdrop.isNull()) {
p.setOpacity(0.15*((100.0-fadeValue)/100.0));
if (fadeValue>0.5) {
p.setOpacity((100.0-fadeValue)/100.0);
}
p.fillRect(r, QBrush(oldBackdrop));
}
if (!newBackdrop.isNull()) {
p.setOpacity(0.15*(fadeValue/100.0));
if (fadeValue<99.5) {
p.setOpacity(fadeValue/100.0);
}
p.fillRect(r, QBrush(newBackdrop));
}
// if (!backdropText.isEmpty() && isWide) {
@@ -463,6 +478,9 @@ void ContextWidget::updateImage(const QImage &img, bool created)
}
newBackdrop=newBackdrop.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
}
if (!newBackdrop.isNull()) {
newBackdrop=setOpacity(newBackdrop);
}
fadeValue=0.0;
animator.setDuration(150);
animator.setEndValue(100);