mirror of
https://github.com/yse/easy_profiler.git
synced 2025-01-14 00:27:55 +08:00
140 lines
3.6 KiB
C++
140 lines
3.6 KiB
C++
/************************************************************************
|
|
* file name : graphics_scrollbar.cpp
|
|
* ----------------- :
|
|
* creation time : 2016/07/04
|
|
* copyright : (c) 2016 Victor Zarubkin
|
|
* author : Victor Zarubkin
|
|
* email : v.s.zarubkin@gmail.com
|
|
* ----------------- :
|
|
* description : .
|
|
* ----------------- :
|
|
* change log : * 2016/07/04 Victor Zarubkin: Initial commit.
|
|
* :
|
|
* : *
|
|
* ----------------- :
|
|
* license : TODO: add license text
|
|
************************************************************************/
|
|
|
|
#include <QScrollBar>
|
|
#include "graphics_scrollbar.h"
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
auto const clamp = [](double _minValue, double _value, double _maxValue)
|
|
{
|
|
return (_value < _minValue ? _minValue : (_value > _maxValue ? _maxValue : _value));
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
GraphicsHorizontalSlider::GraphicsHorizontalSlider() : Parent(), m_halfwidth(0)
|
|
{
|
|
setWidth(40);
|
|
setBrush(Qt::SolidPattern);
|
|
}
|
|
|
|
GraphicsHorizontalSlider::~GraphicsHorizontalSlider()
|
|
{
|
|
|
|
}
|
|
|
|
double GraphicsHorizontalSlider::width() const
|
|
{
|
|
return m_halfwidth * 2.0;
|
|
}
|
|
|
|
double GraphicsHorizontalSlider::halfwidth() const
|
|
{
|
|
return m_halfwidth;
|
|
}
|
|
|
|
void GraphicsHorizontalSlider::setWidth(double _width)
|
|
{
|
|
m_halfwidth = _width * 0.5;
|
|
setPolygon(QRectF(-m_halfwidth, -10, _width, 20));
|
|
}
|
|
|
|
void GraphicsHorizontalSlider::setHalfwidth(double _halfwidth)
|
|
{
|
|
m_halfwidth = _halfwidth;
|
|
setPolygon(QRectF(-m_halfwidth, -10, m_halfwidth * 2.0, 20));
|
|
}
|
|
|
|
void GraphicsHorizontalSlider::setColor(QRgb _color)
|
|
{
|
|
auto b = brush();
|
|
b.setColor(_color);
|
|
setBrush(b);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
GraphicsHorizontalScrollbar::GraphicsHorizontalScrollbar(QWidget* _parent)
|
|
: Parent(_parent)
|
|
, m_minimumValue(0)
|
|
, m_maximumValue(500)
|
|
, m_value(10)
|
|
, m_slider(nullptr)
|
|
{
|
|
setCacheMode(QGraphicsView::CacheNone);
|
|
setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
|
|
setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
|
|
setOptimizationFlag(QGraphicsView::DontSavePainterState, true);
|
|
|
|
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
|
setMinimumHeight(20);
|
|
setMaximumHeight(20);
|
|
|
|
auto selfScene = new QGraphicsScene(this);
|
|
selfScene->setSceneRect(0, -10, 500, 20);
|
|
setScene(selfScene);
|
|
|
|
m_slider = new GraphicsHorizontalSlider();
|
|
m_slider->setPos(10, 0);
|
|
m_slider->setColor(0xffff0404);
|
|
selfScene->addItem(m_slider);
|
|
|
|
centerOn(10, 0);
|
|
}
|
|
|
|
GraphicsHorizontalScrollbar::~GraphicsHorizontalScrollbar()
|
|
{
|
|
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
double GraphicsHorizontalScrollbar::minimum() const
|
|
{
|
|
return m_minimumValue;
|
|
}
|
|
|
|
double GraphicsHorizontalScrollbar::maximum() const
|
|
{
|
|
return m_maximumValue;
|
|
}
|
|
|
|
double GraphicsHorizontalScrollbar::value() const
|
|
{
|
|
return m_value;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
void GraphicsHorizontalScrollbar::setValue(double _value)
|
|
{
|
|
m_value = clamp(m_minimumValue + m_slider->halfwidth(), _value, m_maximumValue - m_slider->halfwidth());
|
|
emit valueChanged(m_value);
|
|
}
|
|
|
|
void GraphicsHorizontalScrollbar::setRange(double _minValue, double _maxValue)
|
|
{
|
|
m_minimumValue = _minValue;
|
|
m_maximumValue = _maxValue;
|
|
setValue(m_value);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|