void ThumbnailStrip::refreshLayout()
{
QRect avail = geometry();
avail.adjust(6, 6, -6, -6);
int numActive = 0;
for(ResourcePreview *c : m_Thumbnails)
if(c->isActive())
numActive++;
// depending on overall aspect ratio, we either lay out the strip horizontally or
// vertically. This tries to account for whether the strip is docked along one side
// or another of the texture viewer
if(avail.width() > avail.height())
{
avail.setWidth(avail.width() + 6); // controls implicitly have a 6 margin on the right
int aspectWidth = (int)((float)avail.height() * 1.3f);
ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
delete layout;
layout = new QHBoxLayout(ui->scrollAreaWidgetContents);
for(ResourcePreview *w : m_Thumbnails)
layout->addWidget(w);
layout->setSpacing(6);
layout->setContentsMargins(6, 6, 6, 6);
layout->setAlignment(Qt::AlignTop);
int noscrollWidth = numActive * (aspectWidth + 20);
if(noscrollWidth <= avail.width())
{
ui->scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
for(ResourcePreview *c : m_Thumbnails)
c->setSize(QSize(aspectWidth, avail.height()));
}
else
{
ui->scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
QScrollBar *hs = ui->scrollArea->horizontalScrollBar();
avail.setHeight(avail.height() - hs->geometry().height());
aspectWidth = (int)((float)avail.height() * 1.3f);
int totalWidth = numActive * (aspectWidth + 20);
hs->setEnabled(totalWidth > avail.width());
for(ResourcePreview *c : m_Thumbnails)
c->setSize(QSize(aspectWidth, avail.height()));
}
}
else
{
avail.setHeight(avail.height() + 6); // controls implicitly have a 6 margin on the bottom
int aspectHeight = (int)((float)avail.width() / 1.3f);
ui->scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
delete layout;
layout = new QVBoxLayout(ui->scrollAreaWidgetContents);
for(ResourcePreview *w : m_Thumbnails)
layout->addWidget(w);
layout->setSpacing(6);
layout->setContentsMargins(6, 6, 6, 6);
layout->setAlignment(Qt::AlignTop);
int noscrollHeight = numActive * (aspectHeight + 6);
if(noscrollHeight <= avail.height())
{
ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
for(ResourcePreview *c : m_Thumbnails)
c->setSize(QSize(avail.width(), aspectHeight));
}
else
{
ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
QScrollBar *vs = ui->scrollArea->verticalScrollBar();
avail.setWidth(avail.width() - vs->geometry().width());
aspectHeight = (int)((float)avail.width() / 1.3f);
int totalHeight = numActive * (aspectHeight + 6);
vs->setEnabled(totalHeight > avail.height());
for(ResourcePreview *c : m_Thumbnails)
c->setSize(QSize(avail.width(), aspectHeight));
}
}
}
