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Applied viewport fix for views found here http://stackoverflow.com/q/3433664/356726

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* Use new signal/slot syntax
* renamed resize mode
* Using sampleElements for presizing, some finetuning
This commit is contained in:
Klaus Basan
2016-03-19 19:14:29 +01:00
parent 7f2e37fab0
commit a2322aa13b
2 changed files with 45 additions and 31 deletions
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64
src/blackgui/views/viewbase.cpp
View File

@@ -14,7 +14,6 @@
#include "blackgui/guiutility.h"
#include "blackgui/shortcut.h"
#include "blackcore/registermetadata.h"
#include <QHeaderView>
#include <QModelIndex>
#include <QTime>
@@ -28,6 +27,7 @@
#include <QFileDialog>
#include <QStandardPaths>
#include <QDir>
#include <limits>
using namespace BlackMisc;
using namespace BlackGui;
@@ -183,17 +183,17 @@ namespace BlackGui
int items = menu.actions().size();
if (this->m_menus.testFlag(MenuRefresh)) { menu.addAction(BlackMisc::CIcons::refresh16(), "Update", this, SIGNAL(requestUpdate())); }
if (this->m_menus.testFlag(MenuBackend)) { menu.addAction(BlackMisc::CIcons::refresh16(), "Reload from backend", this, SIGNAL(requestNewBackendData())); }
if (this->m_menus.testFlag(MenuClear)) { menu.addAction(BlackMisc::CIcons::delete16(), "Clear", this, SLOT(ps_clear())); }
if (this->m_menus.testFlag(MenuClear)) { menu.addAction(BlackMisc::CIcons::delete16(), "Clear", this, &CViewBaseNonTemplate::ps_clear); }
if (this->m_menus.testFlag(MenuRemoveSelectedRows))
{
if (this->hasSelection())
{
menu.addAction(BlackMisc::CIcons::delete16(), "Remove selected rows", this, SLOT(ps_removeSelectedRows()), CShortcut::keyDelete());
menu.addAction(BlackMisc::CIcons::delete16(), "Remove selected rows", this, &CViewBaseNonTemplate::ps_removeSelectedRows, CShortcut::keyDelete());
}
}
if (this->m_menus.testFlag(MenuDisplayAutomatically))
{
QAction *a = menu.addAction(CIcons::appMappings16(), "Automatically display (when loaded)", this, SLOT(ps_toggleAutoDisplay()));
QAction *a = menu.addAction(CIcons::appMappings16(), "Automatically display (when loaded)", this, &CViewBaseNonTemplate::ps_toggleAutoDisplay);
a->setCheckable(true);
a->setChecked(this->displayAutomatically());
}
@@ -202,8 +202,8 @@ namespace BlackGui
items = menu.actions().size();
if (this->m_menus.testFlag(MenuFilter))
{
menu.addAction(CIcons::filter16(), "Filter", this, SLOT(ps_displayFilterDialog()), CShortcut::keyDisplayFilter());
menu.addAction(CIcons::filter16(), "Remove Filter", this, SLOT(ps_removeFilter()));
menu.addAction(CIcons::filter16(), "Filter", this, &CViewBaseNonTemplate::ps_displayFilterDialog, CShortcut::keyDisplayFilter());
menu.addAction(CIcons::filter16(), "Remove Filter", this, &CViewBaseNonTemplate::ps_removeFilter);
}
if (menu.actions().size() > items) { menu.addSeparator(); }
@@ -212,31 +212,31 @@ namespace BlackGui
SelectionMode sm = this->selectionMode();
if (sm == MultiSelection || sm == ExtendedSelection)
{
menu.addAction(QIcon(), "Select all", this, SLOT(selectAll()), Qt::CTRL + Qt::Key_A);
menu.addAction(QIcon(), "Select all", this, &CViewBaseNonTemplate::selectAll, Qt::CTRL + Qt::Key_A);
}
if ((this->m_originalSelectionMode == MultiSelection || this->m_originalSelectionMode == ExtendedSelection) && this->m_menus.testFlag(MenuToggleSelectionMode))
{
if (sm != MultiSelection)
{
QAction *a = menu.addAction(QIcon(), "Switch to multi selection", this, SLOT(ps_toggleSelectionMode()));
QAction *a = menu.addAction(QIcon(), "Switch to multi selection", this, &CViewBaseNonTemplate::ps_toggleSelectionMode);
a->setData(MultiSelection);
}
if (sm != ExtendedSelection)
{
QAction *a = menu.addAction(QIcon(), "Switch to extended selection", this, SLOT(ps_toggleSelectionMode()));
QAction *a = menu.addAction(QIcon(), "Switch to extended selection", this, &CViewBaseNonTemplate::ps_toggleSelectionMode);
a->setData(ExtendedSelection);
}
if (sm != SingleSelection)
{
QAction *a = menu.addAction(QIcon(), "Switch to single selection", this, SLOT(ps_toggleSelectionMode()));
QAction *a = menu.addAction(QIcon(), "Switch to single selection", this, &CViewBaseNonTemplate::ps_toggleSelectionMode);
a->setData(SingleSelection);
}
}
if (sm != NoSelection)
{
menu.addAction(QIcon(), "Clear selection", this, SLOT(clearSelection()), CShortcut::keyClearSelection());
menu.addAction(QIcon(), "Clear selection", this, &CViewBaseNonTemplate::clearSelection, CShortcut::keyClearSelection());
}
if (menu.actions().size() > items) { menu.addSeparator(); }
@@ -247,7 +247,7 @@ namespace BlackGui
if (menu.actions().size() > items) { menu.addSeparator(); }
// resizing
menu.addAction(BlackMisc::CIcons::resize16(), "Full resize", this, SLOT(fullResizeToContents()));
menu.addAction(BlackMisc::CIcons::resize16(), "Full resize", this, &CViewBaseNonTemplate::fullResizeToContents);
// resize to content might decrease performance,
// so I only allow changing to "content resizing" if size matches
@@ -257,12 +257,12 @@ namespace BlackGui
// when not auto let set how we want to resize rows
if (m_rowResizeMode == Interactive)
{
QAction *a = menu.addAction(BlackMisc::CIcons::resizeVertical16(), " Resize rows to content (auto)", this, SLOT(rowsResizeModeToContent()));
QAction *a = menu.addAction(BlackMisc::CIcons::resizeVertical16(), " Resize rows to content (auto)", this, &CViewBaseNonTemplate::rowsResizeModeToContent);
a->setEnabled(enabled && !autoResize);
}
else
{
QAction *a = menu.addAction(BlackMisc::CIcons::resizeVertical16(), "Resize rows interactive", this, SLOT(rowsResizeModeToInteractive()));
QAction *a = menu.addAction(BlackMisc::CIcons::resizeVertical16(), "Resize rows interactive", this, &CViewBaseNonTemplate::rowsResizeModeToInteractive);
a->setEnabled(!autoResize);
}
@@ -279,7 +279,7 @@ namespace BlackGui
if (m_showingLoadIndicator)
{
// just in case, if this ever will be dangling
menu.addAction(BlackMisc::CIcons::preloader16(), "Hide load indicator", this, SLOT(hideLoadIndicator()));
menu.addAction(BlackMisc::CIcons::preloader16(), "Hide load indicator", this, &CViewBaseNonTemplate::hideLoadIndicator);
}
}
@@ -493,7 +493,7 @@ namespace BlackGui
bool CViewBaseNonTemplate::isResizeConditionMet(int containerSize) const
{
if (m_resizeMode == ResizingOnceSubset) { return false; }
if (m_resizeMode == PresizeSubset) { return false; }
if (m_resizeMode == ResizingOff) { return false; }
if (m_resizeMode == ResizingOnce) { return m_resizeCount < 1; }
if (m_resizeMode == ResizingAuto)
@@ -507,7 +507,15 @@ namespace BlackGui
void CViewBaseNonTemplate::fullResizeToContents()
{
m_resizeCount++;
this->setVisible(false);
// magic trick from:
// http://stackoverflow.com/q/3433664/356726
const QRect vporig = this->viewport()->geometry();
QRect vpnew = vporig;
vpnew.setWidth(std::numeric_limits<int>::max());
this->viewport()->setGeometry(vpnew);
this->m_resizeCount++;
this->resizeColumnsToContents(); // columns
this->resizeRowsToContents(); // rows
if (m_forceStretchLastColumnWhenResized)
@@ -515,6 +523,9 @@ namespace BlackGui
// re-stretch
this->horizontalHeader()->setStretchLastSection(true);
}
this->viewport()->setGeometry(vporig);
this->setVisible(true);
}
void CViewBaseNonTemplate::ps_customMenuRequested(QPoint pos)
@@ -623,23 +634,26 @@ namespace BlackGui
// we have data
this->showLoadIndicator(container.size());
bool reallyResize = resize && isResizeConditionMet(container.size()); // do we really perform resizing
bool presize = (m_resizeMode == ResizingOnceSubset) &&
bool presize = (m_resizeMode == PresizeSubset) &&
this->isEmpty() && // only when no data yet
!reallyResize; // not when we resize later
presize = presize || (this->isEmpty() && resize && !reallyResize); // we presize if we wanted to resize but actually do not because of condition
bool presizeThreshold = presize && container.size() > ResizeSubsetThreshold; // only when size making sense
const bool presizeThresholdReached = presize && container.size() > ResizeSubsetThreshold; // only when size making sense
// when we will not resize, we might presize
if (presizeThreshold)
if (presizeThresholdReached)
{
int presizeRandomElements = container.size() / 100;
this->m_model->update(container.randomElements(presizeRandomElements), false);
this->fullResizeToContents();
const int presizeRandomElements = container.size() > 1000 ? container.size() / 100 : container.size() / 40;
if (presizeRandomElements > 0)
{
this->m_model->update(container.sampleElements(presizeRandomElements), false);
this->fullResizeToContents();
}
}
int c = this->m_model->update(container, sort);
// resize after real update according to mode
if (presizeThreshold)
if (presizeThresholdReached)
{
// currently no furhter actions
}
@@ -647,7 +661,7 @@ namespace BlackGui
{
this->resizeToContents();
}
else if (presize && !presizeThreshold)
else if (presize && !presizeThresholdReached)
{
// small amount of data not covered before
this->fullResizeToContents();

12
src/blackgui/views/viewbase.h
View File

@@ -52,10 +52,10 @@ namespace BlackGui
//! \remarks Using own resizing (other than QHeaderView::ResizeMode)
enum ResizeMode
{
ResizingAuto, //!< resizing when below threshold, \sa m_resizeAutoNthTime forcing only every n-th update to be resized
ResizingOnce, //!< only one time
ResizingOnceSubset, //!< use a subset of the data to resize
ResizingOff //!< never
ResizingAuto, //!< resizing when below threshold, \sa m_resizeAutoNthTime forcing only every n-th update to be resized
ResizingOnce, //!< only one time
PresizeSubset, //!< use a subset of the data to resize
ResizingOff //!< never
};
//! How rows are resized, makes sense when \sa ResizeMode is \sa ResizingOff
@@ -99,7 +99,7 @@ namespace BlackGui
static constexpr int ASyncRowsCountThreshold = 50;
//! When to use pre-sizing with random elements
static constexpr int ResizeSubsetThreshold = 50;
static constexpr int ResizeSubsetThreshold = 250;
//! Clear data
virtual void clear() = 0;
@@ -307,7 +307,7 @@ namespace BlackGui
//! Default file for load/save operations
QString getDefaultFilename() const;
ResizeMode m_resizeMode = ResizingOnceSubset; //!< mode
ResizeMode m_resizeMode = PresizeSubset; //!< mode
RowsResizeMode m_rowResizeMode = Interactive; //!< row resize mode for row height
SelectionMode m_originalSelectionMode = this->selectionMode(); //!< Selection mode set
int m_resizeCount = 0; //!< flag / counter, how many resize activities