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slider.cpp
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slider.cpp
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/***************************************************************************
* Project created by QtCreator 2018-06-01T17:15:24 *
* *
* goldfinch Copyright (C) 2014 AbouZakaria <yahiaui@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "slider.h"
#include <QWheelEvent>
#include <QDebug>
#include <QApplication>
//------------------------------------------------------
QString myStyle()
{
QColor sh_color=QApplication::palette().highlight().color();
QString shadow=QString("rgba(%1,%2,%3,100)")
.arg(QString::number(sh_color.red()))
.arg(QString::number(sh_color.green()))
.arg(QString::number(sh_color.blue())) ;
QString mStyle=
" QSlider#SeekSlider::groove:horizontal {"
" height: 8px;"
" background: transparent;"
" margin: 6px 0px;"
" }"
" QSlider#SeekSlider::handle:horizontal {"
"background:transparent;"/* لاتغير هذه */
" width: 14px;"
" margin: -3px 0px; "
" border-radius: 7px;"
"}";
if(QApplication::isLeftToRight()){
mStyle+= QString(" QSlider#SeekSlider::add-page:horizontal {"
" background: %1 ;"
" margin: 8px 0; "
" border-radius: 2px;"
" }"
" QSlider#SeekSlider::sub-page:horizontal {"
" background: palette(Highlight );"
" margin: 8px 0; "
" border-radius: 2px;"
" }").arg(shadow);
}else{
mStyle+=QString(" QSlider#SeekSlider::add-page:horizontal {"
" background: palette(Highlight ) ;"
" margin: 8px 0px; "
"border-top-right-radius: 2px;"
"border-bottom-right-radius: 2px;"
" }"
" QSlider#SeekSlider::sub-page:horizontal {"
" background: %1 ;"
" margin: 8px 0px; "
"border-top-left-radius: 2px;"
"border-bottom-left-radius: 2px;"
" }").arg(shadow);
}
return mStyle;
}
Slider::Slider()
{
setObjectName("SeekSlider");
setOrientation(Qt::Horizontal);
setContentsMargins(0,0,0,0);
setCursor(Qt::PointingHandCursor);
setStyleSheet(myStyle());
}
void Slider::wheelEvent(QWheelEvent *event)
{
int num = event->delta();
int val=num<0 ? -pageStep():pageStep();
setSliderPosition(value()+val);
emit seekChanged(value()+val);
QMetaObject::invokeMethod(parent()->parent(), "setSeek",Q_ARG(int,value()+val));
//qDebug()<<"Slider::wheelEvent:"<<value()+val;
event->accept();
}
void Slider::mouseReleaseEvent(QMouseEvent *ev)
{
int perx=ev->x()*100/width();
int val=perx*maximum()/100;
if(val<0)val=0;
if(val>maximum())val=maximum();
if(isRightToLeft())
val=maximum()-val;
setValue(val);
// setSliderPosition(val);
emit seekChanged(val);
QMetaObject::invokeMethod(parent()->parent(), "setSeek",Q_ARG(int,val));
setSliderDown(false);
//qDebug()<<" Slider::mouseReleaseEvent:"<<val;
}
void Slider::mousePressEvent(QMouseEvent *ev)
{
Q_UNUSED(ev)
setSliderDown(true);
}
void Slider::mouseMoveEvent(QMouseEvent *ev)
{
setSliderDown(true);
int perx=ev->x()*100/width();
int val=perx*maximum()/100;
if(val<0)val=0;
if(val>maximum())val=maximum();
if(isRightToLeft())
val=maximum()-val;
// qDebug()<<"Slider::mouseMoveEvent:"<<val;
// setValue(val);
setSliderPosition(val);
}
void Slider::keyPressEvent(QKeyEvent *ev)
{
int val=0;
switch (ev->key()) {
case Qt::Key_Left:
val=value()+singleStep();
break;
case Qt::Key_Right:
val=value()-singleStep();
break;
case Qt::Key_Up:
val=value()+pageStep();
break;
case Qt::Key_Down:
val=value()-pageStep();
break;
case Qt::Key_PageUp:
val=value()+(pageStep()*2);
break;
case Qt::Key_PageDown:
val=value()-(pageStep()*2);
break;
}
if(val==0)return;
if(val<0)val=0;
if(val>maximum())val=maximum();
emit seekChanged(val);
QMetaObject::invokeMethod(parent()->parent(), "setSeek",Q_ARG(int,val));
}
//------------------------------------------------------
void Slider::enterEvent(QEvent *event)
{
Q_UNUSED(event)
setStyleSheet(styleSheet().replace("background:transparent;","background:palette(Highlight);"));
}
//------------------------------------------------------
void Slider::leaveEvent(QEvent *event)
{
Q_UNUSED(event)
// setCursor(Qt::ArrowCursor);
setStyleSheet(styleSheet().replace("background:palette(Highlight);","background:transparent;"));
}