CCPdfScrollArea Class Reference

A custom scroll area that supports gesture-based zooming for PDF viewing. More...

#include <ccpdfscrollarea.h>

Inheritance diagram for CCPdfScrollArea:

Signals
void	indicate_zoom (CCPdfViewer::ZoomDirection)
	Emitted when a zoom gesture is detected.

Public Member Functions
	CCPdfScrollArea (QWidget *parent=nullptr)
	Constructs a CCPdfScrollArea with optional parent widget.

Protected Member Functions
void	mousePressEvent (QMouseEvent *event) override
	Records initial press position when mouse is pressed.
void	mouseReleaseEvent (QMouseEvent *event) override
	Ends click state when mouse is released.
void	mouseMoveEvent (QMouseEvent *event) override
	Processes dragging or scrolling when mouse is moved.
void	handleGestureEvent (QGestureEvent *event)
	Handles gesture events such as pinch-to-zoom.

Detailed Description

A custom scroll area that supports gesture-based zooming for PDF viewing.

Constructor & Destructor Documentation

CCPdfScrollArea()

CCPdfScrollArea::CCPdfScrollArea ( QWidget *  parent = nullptr )

inlineexplicit

Constructs a CCPdfScrollArea with optional parent widget.

Enables touch event handling and pinch gesture recognition.

Parameters

parent

The parent widget.

Member Function Documentation

handleGestureEvent()

void CCPdfScrollArea::handleGestureEvent ( QGestureEvent *  event )

protected

Handles gesture events such as pinch-to-zoom.

Parameters

event

Gesture event object.

mouseMoveEvent()

void CCPdfScrollArea::mouseMoveEvent ( QMouseEvent *  event )

overrideprotected

Processes dragging or scrolling when mouse is moved.

Parameters

event

Mouse move event.

mousePressEvent()

void CCPdfScrollArea::mousePressEvent ( QMouseEvent *  event )

overrideprotected

Records initial press position when mouse is pressed.

Parameters

event

Mouse press event.

mouseReleaseEvent()

void CCPdfScrollArea::mouseReleaseEvent ( QMouseEvent *  event )

overrideprotected

Ends click state when mouse is released.

Parameters

event

Mouse release event.

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The documentation for this class was generated from the following files:

• extern_app/pdfReader/ui/ccpdfscrollarea.h
• extern_app/pdfReader/ui/ccpdfscrollarea.cpp