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/*
* Copyright (C) 2020 Tianjin KYLIN Information Technology Co., Ltd.
*
* 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, 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "switchbutton.h"
SwitchButton::SwitchButton(QWidget *parent) : QWidget(parent)
{
setFixedSize(50,24);
m_fWidth = (float)width();
m_fHeight = (float)height();
m_cTimer = new QTimer(this);
m_cTimer->setInterval(5);
if(m_bIsOn == 1) {
m_fCurrentValue = m_fWidth - 16 - 4;
}
else {
m_fCurrentValue = 4;
}
connect(m_cTimer,SIGNAL(timeout()),this,SLOT(startAnimation()));
}
void SwitchButton::setSwitchStatus(bool check) {
if (!m_enabled)
return;
if(check == true) {
m_bIsOn = 1;
} else {
m_bIsOn = 0;
}
emit this->switchStatusChanged();
m_cTimer->start(); //开始播放动画
}
bool SwitchButton::getSwitchStatus()
{
if (m_bIsOn == 1)
return true;
return false;
}
void SwitchButton::setEnabled(bool enabled)
{
m_enabled = enabled;
}
/* 播放按钮开启关闭动画 */
void SwitchButton::startAnimation() { //滑动按钮动作播放
int pos = 4;
int size = m_fWidth - 16;
if(m_bIsOn) {
m_fCurrentValue ++; //往右滑动
if(m_fCurrentValue >= size - pos) { //到达边界停下来
m_fCurrentValue = size - pos;
m_cTimer->stop();
}
} else {
m_fCurrentValue --;
if(m_fCurrentValue <= pos) { //到达最小值，停止继续前进
m_fCurrentValue = pos;
m_cTimer->stop();
}
}
update();
}
/* 按钮按下处理 */
void SwitchButton::mousePressEvent(QMouseEvent *event) {
Q_UNUSED(event);
if (!m_enabled)
return QWidget::mousePressEvent(event);
m_bIsOn = !m_bIsOn;
Q_EMIT clicked(m_bIsOn);
return QWidget::mousePressEvent(event);
}
/* 绘制滑动按钮主体 */
void SwitchButton::paintEvent(QPaintEvent *event) {
Q_UNUSED(event);
QPainter painter(this);
painter.setRenderHint(QPainter::SmoothPixmapTransform);
painter.setRenderHint(QPainter::Antialiasing); //抗锯齿效果
painter.setPen(Qt::NoPen);
QColor colorActive(61,107,229);
QColor colorInactive(190,190,190);
colorInactive.setAlphaF(0.12);
if(m_bIsOn) {
painter.save();
painter.setBrush(colorActive);
QRectF active_rect = QRectF(0,0,m_fWidth,m_fHeight);
painter.drawRoundedRect(active_rect, 0.5 * m_fHeight, 0.5 * m_fHeight); //画开启状态
} else {
painter.save();
painter.setBrush(colorInactive);
QRectF inactive_rect = QRectF(0 ,0,m_fWidth,m_fHeight);
painter.drawRoundedRect(inactive_rect, 0.5 * m_fHeight, 0.5 * m_fHeight); //画关闭状态
}
painter.restore();
painter.save();
painter.setBrush(Qt::white);
painter.drawEllipse(m_fCurrentValue,4, 16, 16);
painter.restore();
}
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