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added zoom of thumbnails on control+wheel

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csoler 2020-06-23 20:24:14 +02:00
parent 97ad766863
commit d39b09c5bc
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8 changed files with 91 additions and 33 deletions
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47
retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidgetWithModel.cpp
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@ -78,6 +78,21 @@ Q_DECLARE_METATYPE(ChannelPostFileInfo)
// Delegate used to paint into the table of thumbnails
int ChannelPostDelegate::cellSize(const QFont& font) const
{
return mZoom*COLUMN_SIZE_FONT_FACTOR_W*QFontMetricsF(font).height();
}
void ChannelPostDelegate::zoom(bool zoom_or_unzoom)
{
if(zoom_or_unzoom)
mZoom *= 1.02;
else
mZoom /= 1.02;
std::cerr << "zoom factor: " << mZoom << std::endl;
}
void ChannelPostDelegate::paint(QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index) const
{
// prepare
@ -101,11 +116,14 @@ void ChannelPostDelegate::paint(QPainter * painter, const QStyleOptionViewItem &
w.render(&pixmap,QPoint(),QRegion(),QWidget::DrawChildren );// draw the widgets, not the background
if(mZoom != 1.0)
pixmap = pixmap.scaled(mZoom*pixmap.size(),Qt::KeepAspectRatio,Qt::SmoothTransformation);
if(IS_MSG_UNREAD(post.mMeta.mMsgStatus) || IS_MSG_NEW(post.mMeta.mMsgStatus))
{
QPainter p(&pixmap);
QFontMetricsF fm(option.font);
p.drawPixmap(QPoint(6.2*fm.height(),6.9*fm.height()),FilesDefs::getPixmapFromQtResourcePath(STAR_OVERLAY_IMAGE).scaled(7*fm.height(),7*fm.height(),Qt::KeepAspectRatio,Qt::SmoothTransformation));
p.drawPixmap(mZoom*QPoint(6.2*fm.height(),6.9*fm.height()),FilesDefs::getPixmapFromQtResourcePath(STAR_OVERLAY_IMAGE).scaled(mZoom*7*fm.height(),mZoom*7*fm.height(),Qt::KeepAspectRatio,Qt::SmoothTransformation));
}
// debug
@ -128,7 +146,7 @@ QSize ChannelPostDelegate::sizeHint(const QStyleOptionViewItem& option, const QM
QFontMetricsF fm(option.font);
return QSize(COLUMN_SIZE_FONT_FACTOR_W*fm.height(),COLUMN_SIZE_FONT_FACTOR_H*fm.height());
return QSize(mZoom*COLUMN_SIZE_FONT_FACTOR_W*fm.height(),mZoom*COLUMN_SIZE_FONT_FACTOR_H*fm.height());
}
QWidget *ChannelPostFilesDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex& index) const
@ -213,11 +231,13 @@ GxsChannelPostsWidgetWithModel::GxsChannelPostsWidgetWithModel(const RsGxsGroupI
ui->setupUi(this);
ui->postsTree->setModel(mChannelPostsModel = new RsGxsChannelPostsModel());
ui->postsTree->setItemDelegate(new ChannelPostDelegate());
ui->postsTree->setItemDelegate(mChannelPostsDelegate = new ChannelPostDelegate());
ui->postsTree->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // prevents bug on w10, since row size depends on widget width
ui->postsTree->setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);// more beautiful if we scroll at pixel level
ui->postsTree->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
connect(ui->postsTree,SIGNAL(zoomRequested(bool)),this,SLOT(updateZoomFactor(bool)));
ui->channelPostFiles_TV->setModel(mChannelPostFilesModel = new RsGxsChannelPostFilesModel(this));
ui->channelPostFiles_TV->setItemDelegate(new ChannelPostFilesDelegate());
ui->channelPostFiles_TV->setPlaceholderText(tr("No files in this post, or no post selected"));
@ -251,7 +271,7 @@ GxsChannelPostsWidgetWithModel::GxsChannelPostsWidgetWithModel(const RsGxsGroupI
QFontMetricsF fm(font());
for(int i=0;i<mChannelPostsModel->columnCount();++i)
ui->postsTree->setColumnWidth(i,COLUMN_SIZE_FONT_FACTOR_W*fm.height());
ui->postsTree->setColumnWidth(i,mChannelPostsDelegate->cellSize(font()));
/* Setup UI helper */
@ -313,6 +333,23 @@ GxsChannelPostsWidgetWithModel::GxsChannelPostsWidgetWithModel(const RsGxsGroupI
}, mEventHandlerId, RsEventType::GXS_CHANNELS );
}
void GxsChannelPostsWidgetWithModel::updateZoomFactor(bool zoom_or_unzoom)
{
mChannelPostsDelegate->zoom(zoom_or_unzoom);
for(int i=0;i<mChannelPostsModel->columnCount();++i)
ui->postsTree->setColumnWidth(i,mChannelPostsDelegate->cellSize(font()));
QSize s = ui->postsTree->size();
int n_columns = std::max(1,(int)floor(s.width() / (mChannelPostsDelegate->cellSize(font()))));
std::cerr << "nb columns: " << n_columns << std::endl;
mChannelPostsModel->setNumColumns(n_columns); // forces the update
ui->postsTree->dataChanged(QModelIndex(),QModelIndex());
}
void GxsChannelPostsWidgetWithModel::sortColumnPostFiles(int col,Qt::SortOrder so)
{
std::cerr << "Sorting post files according to col " << col << std::endl;
@ -379,7 +416,7 @@ void GxsChannelPostsWidgetWithModel::editPost()
void GxsChannelPostsWidgetWithModel::handlePostsTreeSizeChange(QSize s)
{
int n_columns = std::max(1,(int)floor(s.width() / (COLUMN_SIZE_FONT_FACTOR_W*QFontMetricsF(font()).height())));
int n_columns = std::max(1,(int)floor(s.width() / (mChannelPostsDelegate->cellSize(font()))));
std::cerr << "nb columns: " << n_columns << std::endl;
if(n_columns != mChannelPostsModel->columnCount())