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Issue #112: smooth scrolling

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Jakub Melka
2023-12-10 13:07:06 +01:00
parent 0b579c828f
commit 4340b3dbaa
3 changed files with 75 additions and 3 deletions
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10
Pdf4QtLibWidgets/sources/pdfdrawwidget.h
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@ -24,6 +24,8 @@
#include <QWidget>
#include <QScrollBar>
#include <QTimer>
#include <QElapsedTimer>
#ifdef PDF4QT_ENABLE_OPENGL
#include <QOpenGLWidget>
@ -161,6 +163,7 @@ protected:
private:
void updateCursor();
void onAutoScrollTimeout();
template<typename Event, void(IDrawWidgetInputInterface::* Function)(QWidget*, Event*)>
bool processEvent(Event* event);
@ -168,7 +171,8 @@ private:
enum class MouseOperation
{
None,
Translate
Translate,
AutoScroll
};
/// Performs the mouse operation (under the current mouse position)
@ -177,7 +181,11 @@ private:
PDFWidget* m_widget;
QPoint m_lastMousePosition;
QPoint m_autoScrollMousePosition;
MouseOperation m_mouseOperation;
QTimer m_autoScrollTimer;
QPointF m_autoScrollOffset;
QElapsedTimer m_autoScrollLastElapsedTimer;
};
class PDFDrawWidget : public PDFDrawWidgetBase<QWidget>