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//===========================================
// Lumina Desktop source code
// Copyright (c) 2016, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
// This is a simple subclass of a QToolButton so it can
// provice text rotated vertically as needed
//===========================================
#ifndef _LUMINA_DESKTOP_ROTATE_TOOLBUTTON_H
#define _LUMINA_DESKTOP_ROTATE_TOOLBUTTON_H
#include <QStylePainter>
#include <QStyleOptionToolButton>
#include <QToolButton>
#include <QTransform>
class RotateToolButton : public QToolButton{
Q_OBJECT
private:
int rotate_degrees;
void paintEvent(QPaintEvent*){
/* NOTE: This is what a standard QToolButton performs (peeked at Qt source code for this tidbit)
QStylePainter p(this);
QStyleOptionToolButton opt;
initStyleOption(&opt);
p.drawComplexControl(QStyle::CC_ToolButton, opt);
*/
QStylePainter p(this);
QStyleOptionToolButton opt;
initStyleOption(&opt);
//Apply the rotation matrix to the painter before starting the paint
QTransform trans = QTransform( p.transform() ).rotate(rotate_degrees);
p.setTransform(trans, false); //merging already taken care of
//Now do the normal painting procedure
p.drawComplexControl(QStyle::CC_ToolButton, opt);
}
public:
RotateToolButton(QWidget *parent = Q_NULLPTR) : QToolButton(parent){
rotate_degrees = 0; //no rotation initially
}
void setRotation(int degrees){
rotate_degrees = degrees;
this->update(); //trigger a paint event
}
/*virtual void setText(QString text){
this->setText(text);
if(rotate_degrees !=0){
this->setSizeHint( this->sizeHint()
}
}*/
};
#endif
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