Differential D7929 Diff 19762 src/filewidgets/kcolumnviewgrip.cpp

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src/filewidgets/kcolumnviewgrip.cpp

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		1		/****************************************************************************
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		39
		40		#include "kcolumnviewgrip_p.h"
		41		#include <qstyleoption.h>
		42		#include <qpainter.h>
		43		#include <qbrush.h>
		44		#include <qevent.h>
		45		#include <qdebug.h>
		46
		47		class KColumnViewGrip::Private
		48		{
		49		public:
		50		int originalXLocation = -1;
		51		};
		52
		53		/*
		54		\internal
		55		class KColumnViewGrip
		56
		57		KColumnViewGrip is created to go inside QAbstractScrollArea's corner.
		58		When the mouse it moved it will resize the scroll area and emit's a signal.
		59		*/
		60
		61		/*
		62		\internal
		63		\fn void KColumnViewGrip::gripMoved()
		64		Signal that is emitted when the grip moves the parent widget.
		65		*/
		66
		67		/*!
		68		Creates a new KColumnViewGrip with the given \a parent to view a model.
		69		Use setModel() to set the model.
		70		*/
		71		KColumnViewGrip::KColumnViewGrip(QWidget *parent)
		72		: QWidget(parent), d(new Private)
		73		{
		74		#ifndef QT_NO_CURSOR
		75		setCursor(Qt::SplitHCursor);
		76		#endif
		77		}
		78
		79		/*!
		80		Destroys the view.
		81		*/
		82		KColumnViewGrip::~KColumnViewGrip()
		83		{
		84		}
		85
		86		/*!
		87		Attempt to resize the parent object by \a offset
		88		returns the amount of offset that it was actually able to resized
		89		*/
		90		int KColumnViewGrip::moveGrip(int offset)
		91		{
		92		QWidget parentWidget = (QWidget)parent();
		93
		94		// first resize the parent
		95		int oldWidth = parentWidget->width();
		96		int newWidth = oldWidth;
		97		if (isRightToLeft())
		98		newWidth -= offset;
		99		else
		100		newWidth += offset;
		101		newWidth = qMax(parentWidget->minimumWidth(), newWidth);
		102		parentWidget->resize(newWidth, parentWidget->height());
		103
		104		// Then have the view move the widget
		105		int realOffset = parentWidget->width() - oldWidth;
		106		int oldX = parentWidget->x();
		107		if (realOffset != 0)
		108		emit gripMoved(realOffset);
		109		if (isRightToLeft())
		110		realOffset = -1 * (oldX - parentWidget->x());
		111		return realOffset;
		112		}
		113
		114		/*!
		115		\reimp
		116		*/
		117		void KColumnViewGrip::paintEvent(QPaintEvent *event)
		118		{
		119		QPainter painter(this);
		120		QStyleOption opt;
		121		opt.initFrom(this);
		122		style()->drawControl(QStyle::CE_ColumnViewGrip, &opt, &painter, this);
		123		event->accept();
		124		}
		125
		126		/*!
		127		\reimp
		128		Resize the parent window to the sizeHint
		129		*/
		130		void KColumnViewGrip::mouseDoubleClickEvent(QMouseEvent *event)
		131		{
		132		Q_UNUSED(event);
		133		QWidget parentWidget = (QWidget)parent();
		134		int offset = parentWidget->sizeHint().width() - parentWidget->width();
		135		if (isRightToLeft())
		136		offset *= -1;
		137		moveGrip(offset);
		138		event->accept();
		139		}
		140
		141		/*!
		142		\reimp
		143		Begin watching for mouse movements
		144		*/
		145		void KColumnViewGrip::mousePressEvent(QMouseEvent *event)
		146		{
		147		d->originalXLocation = event->globalX();
		148		event->accept();
		149		}
		150
		151		/*!
		152		\reimp
		153		Calculate the movement of the grip and moveGrip() and emit gripMoved
		154		*/
		155		void KColumnViewGrip::mouseMoveEvent(QMouseEvent *event)
		156		{
		157		int offset = event->globalX() - d->originalXLocation;
		158		d->originalXLocation = moveGrip(offset) + d->originalXLocation;
		159		event->accept();
		160		}
		161
		162		/*!
		163		\reimp
		164		Stop watching for mouse movements
		165		*/
		166		void KColumnViewGrip::mouseReleaseEvent(QMouseEvent *event)
		167		{
		168		d->originalXLocation = -1;
		169		event->accept();
		170		}
		171
		172		#include "moc_kcolumnviewgrip_p.cpp"