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refs #614, allow to resize view by presize algorithm

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This commit is contained in:
Klaus Basan
2016-03-30 23:45:52 +02:00
parent 220edf44f9
commit 9409f93366
2 changed files with 54 additions and 29 deletions
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38
src/blackgui/views/viewbase.cpp
View File

@@ -94,6 +94,7 @@ namespace BlackGui
}
}
void CViewBaseNonTemplate::setFilterDialog(CFilterDialog *filterDialog)
{
this->setFilterWidgetImpl(filterDialog);
@@ -250,7 +251,7 @@ namespace BlackGui
if (menu.actions().size() > items) { menu.addSeparator(); }
// resizing
menu.addAction(BlackMisc::CIcons::resize16(), "Full resize", this, &CViewBaseNonTemplate::fullResizeToContents);
menu.addAction(BlackMisc::CIcons::resize16(), "Resize", this, &CViewBaseNonTemplate::presizeOrFullResizeToContents);
// resize to content might decrease performance,
// so I only allow changing to "content resizing" if size matches
@@ -535,6 +536,11 @@ namespace BlackGui
this->setVisible(true);
}
void CViewBaseNonTemplate::presizeOrFullResizeToContents()
{
}
void CViewBaseNonTemplate::ps_customMenuRequested(QPoint pos)
{
QMenu menu;
@@ -650,7 +656,7 @@ namespace BlackGui
// when we will not resize, we might presize
if (presizeThresholdReached)
{
const int presizeRandomElements = container.size() > 1000 ? container.size() / 100 : container.size() / 40;
const int presizeRandomElements = this->getPresizeRandomElementsSize(container.size());
if (presizeRandomElements > 0)
{
this->m_model->update(container.sampleElements(presizeRandomElements), false);
@@ -677,6 +683,13 @@ namespace BlackGui
return c;
}
int CViewBaseNonTemplate::getPresizeRandomElementsSize(int containerSize) const
{
containerSize = containerSize >= 0 ? containerSize : this->rowCount();
const int presizeRandomElements = containerSize > 1000 ? containerSize / 100 : containerSize / 40;
return presizeRandomElements;
}
template <class ModelClass, class ContainerType, class ObjectType>
BlackMisc::CWorker *CViewBase<ModelClass, ContainerType, ObjectType>::updateContainerAsync(const ContainerType &container, bool sort, bool resize)
{
@@ -839,6 +852,27 @@ namespace BlackGui
return delta;
}
template <class ModelClass, class ContainerType, class ObjectType>
void CViewBase<ModelClass, ContainerType, ObjectType>::presizeOrFullResizeToContents()
{
const int rc = this->rowCount();
if (rc > ResizeSubsetThreshold)
{
const int presizeRandomElements = this->getPresizeRandomElementsSize(rc);
if (presizeRandomElements > 0)
{
const ContainerType containerBackup(this->container());
this->m_model->update(containerBackup.sampleElements(presizeRandomElements), false);
this->fullResizeToContents();
this->m_model->update(containerBackup, false);
}
}
else
{
this->fullResizeToContents();
}
}
template <class ModelClass, class ContainerType, class ObjectType>
int CViewBase<ModelClass, ContainerType, ObjectType>::rowCount() const
{