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big image preview optimisations, preview positioning fix, memory leaks fix

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This commit is contained in:
Blue 2021-05-17 23:32:44 +03:00
parent 721f6daa36
commit ddfaa63a24
Signed by untrusted user: blue
GPG key ID: 9B203B252A63EE38
4 changed files with 43 additions and 20 deletions
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53
ui/widgets/messageline/preview.cpp
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@ -22,7 +22,6 @@
constexpr int margin = 6;
constexpr int maxAttachmentHeight = 500;
bool Preview::fontInitialized = false;
QFont Preview::font;
QFontMetrics Preview::metrics(Preview::font);
@ -41,12 +40,6 @@ Preview::Preview(const QString& pPath, const QSize& pMaxSize, const QPoint& pos,
actualPreview(false),
right(pRight)
{
if (!fontInitialized) {
font.setBold(true);
font.setPixelSize(14);
metrics = QFontMetrics(font);
fontInitialized = true;
}
initializeElements();
if (fileReachable) {
@ -54,6 +47,13 @@ Preview::Preview(const QString& pPath, const QSize& pMaxSize, const QPoint& pos,
}
}
void Preview::initializeFont(const QFont& newFont)
{
font = newFont;
font.setBold(true);
metrics = QFontMetrics(font);
}
Preview::~Preview()
{
clean();
@ -104,6 +104,9 @@ void Preview::actualize(const QString& newPath, const QSize& newSize, const QPoi
}
} else if (maxSizeChanged) {
applyNewMaxSize();
if (right) {
positionChanged = true;
}
}
if (positionChanged || !actualPreview) {
positionElements();
@ -132,6 +135,9 @@ void Preview::setSize(const QSize& newSize)
}
if (maxSizeChanged || !actualPreview) {
applyNewMaxSize();
if (right) {
positionElements();
}
}
}
}
@ -140,13 +146,14 @@ void Preview::applyNewSize()
{
switch (info.preview) {
case Shared::Global::FileInfo::Preview::picture: {
QPixmap img(path);
if (img.isNull()) {
QImageReader img(path);
if (!img.canRead()) {
delete widget;
fileReachable = false;
} else {
img = img.scaled(actualSize, Qt::KeepAspectRatio);
img.setScaledSize(actualSize);
widget->resize(actualSize);
widget->setPixmap(img);
widget->setPixmap(QPixmap::fromImage(img.read()));
}
}
break;
@ -172,7 +179,7 @@ void Preview::applyNewMaxSize()
default: {
int labelWidth = maxSize.width() - actualSize.width() - margin;
QString elidedName = metrics.elidedText(info.name, Qt::ElideMiddle, labelWidth);
cachedLabelSize = metrics.size(0, elidedName);
cachedLabelSize = metrics.boundingRect(elidedName).size();
label->setText(elidedName);
label->resize(cachedLabelSize);
}
@ -225,20 +232,23 @@ void Preview::initializeElements()
{
switch (info.preview) {
case Shared::Global::FileInfo::Preview::picture: {
QPixmap img(path);
if (img.isNull()) {
QImageReader img(path);
if (!img.canRead()) {
fileReachable = false;
} else {
actualPreview = true;
img = img.scaled(actualSize, Qt::KeepAspectRatio);
img.setScaledSize(actualSize);
widget = new QLabel(parent);
widget->setPixmap(img);
widget->setPixmap(QPixmap::fromImage(img.read()));
widget->show();
}
}
break;
case Shared::Global::FileInfo::Preview::animation:{
movie = new QMovie(path);
QObject::connect(movie, &QMovie::error,
std::bind(&Preview::handleQMovieError, this, std::placeholders::_1)
);
if (!movie->isValid()) {
fileReachable = false;
delete movie;
@ -262,7 +272,7 @@ void Preview::initializeElements()
label->setFont(font);
int labelWidth = maxSize.width() - actualSize.width() - margin;
QString elidedName = metrics.elidedText(info.name, Qt::ElideMiddle, labelWidth);
cachedLabelSize = metrics.size(0, elidedName);
cachedLabelSize = metrics.boundingRect(elidedName).size();
label->setText(elidedName);
label->show();
}
@ -302,3 +312,12 @@ QSize Preview::constrainAttachSize(QSize src, QSize bounds)
return src;
}
void Preview::handleQMovieError(QImageReader::ImageReaderError error)
{
if (error == QImageReader::FileNotFoundError) {
fileReachable = false;
movie->deleteLater();
widget->deleteLater();
}
}