#ifndef MOBILEWIDGET_H
#define MOBILEWIDGET_H
#include <QWidget>
#include <QPainter>
#include <QMouseEvent>
namespace Ui {
class MobileWidget;
}
class MobileWidget : public QWidget
{
    Q_OBJECT
public:
    enum DIRECT {
        DIRECT_VERTICAL = 0x00,
        DIRECT_HORIZONTAL = 0x01,
    };
public:
    explicit MobileWidget(QWidget *parent = 0);
    ~MobileWidget();
protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
    void paintEvent(QPaintEvent *event);
    void resizeEvent(QResizeEvent *event);
    void keyPressEvent(QKeyEvent *event);
protected:
    void drawBackground(QPainter *painter);
private:
    Ui::MobileWidget *ui;
    int _minWidth;              // 最小宽度
    int _minHeight;             // 最小高度
    int _radius;                // 圆角角度
    int _spaceWidth;            // 圆角到中间的边框高度
    int _borderWidth;           // 两边窄边的宽度
    int _earY;                  // 耳机框的y坐标
    int _earWidth;              // 耳机框的宽度
    int _earHeight;             // 耳机框的高度
    bool _vertical;
    QColor _transparentColor;   // 四个直角透明区域颜色
    QRect _cornerRect1;         // 四个圆角区域矩形 1->2->3->4 = 左上->右上->左下->右下
    QRect _cornerRect2;         // 四个圆角区域矩形
    QRect _cornerRect3;         // 四个圆角区域矩形
    QRect _cornerRect4;         // 四个圆角区域矩形
    QRect _borderRect1;         // 左边界
    QRect _borderRect2;         // 右边界
    QRect _topBorderRect1;      // 顶部边框圆角部分
    QRect _topBorderRect2;      // 顶部边框圆角下部
    QRect _bottomBorderRect1;   // 底部边框圆角部分
    QRect _bottomBorderRect2;   // 底部边框圆角上部
    QRect _centerRect;          // 中心容器区域
    QRect _earRect;             // 耳机框区域
    QRegion _moveRegion;        // 鼠标点击可移动的区域
    QRegion _stretchRegion1;    // 鼠标点击可拉伸的区域
    QRegion _stretchRegion2;    // 鼠标点击可拉伸的区域
    QRegion _stretchRegion3;    // 鼠标点击可拉伸的区域
    QRegion _stretchRegion4;    // 鼠标点击可拉伸的区域
    bool _leftButtonPressed;    // 鼠标左键按钮
    QPoint _beginPoint;         // 鼠标左键按钮按下时的坐标
    QPoint _leftTopPoint;       // 窗口左上角的坐标
    bool _stretchRegion1Pressed;// 拉伸按钮区域
    bool _stretchRegion2Pressed;// 拉伸按钮区域
    bool _stretchRegion3Pressed;// 拉伸按钮区域
    bool _stretchRegion4Pressed;// 拉伸按钮区域
    QRect _beginRect;           // 拉伸开始时的原始窗口
    DIRECT _direct;             // 方向是水平还是垂直
    QRect _buttonRectIcon;
    QRect _buttonRectService;
    QRect _buttonRectMax;
    QRect _buttonRectMin;
    QRect _buttonRectExit;
    QRect _buttonRectLeft;
    QRect _buttonRectMiddle;
    QRect _buttonRectRight;
};
#endif // MOBILEWIDGET_H

#include "MobileWidget.h"
#include "ui_MobileWidget.h"
#include <QDebug>
MobileWidget::MobileWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MobileWidget),
    _minWidth(400),
    _minHeight(400),
    _radius(50),
    _spaceWidth(35),
    _borderWidth(3),
    _earY(30),
    _earWidth(100),
    _earHeight(10),
    _transparentColor(QColor("#02000000")),
    _leftButtonPressed(false),
    _stretchRegion1Pressed(false),
    _stretchRegion2Pressed(false),
    _stretchRegion3Pressed(false),
    _stretchRegion4Pressed(false),
    _direct(DIRECT::DIRECT_VERTICAL)
{
    ui->setupUi(this);
    setWindowFlag(Qt::FramelessWindowHint);
    setAttribute(Qt::WA_TranslucentBackground);
    setMouseTracking(true);
    setMinimumSize(_minWidth, _minHeight);
}
MobileWidget::~MobileWidget()
{
    delete ui;
}
...
void MobileWidget::mousePressEvent(QMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
        if(_moveRegion.contains(event->pos()))
        {
            _leftButtonPressed = true;
        }
        if(_stretchRegion1.contains(event->pos()))
        {
            _stretchRegion1Pressed = true;
        }else if(_stretchRegion2.contains(event->pos()))
        {
            _stretchRegion2Pressed = true;
        }else if(_stretchRegion3.contains(event->pos()))
        {
            _stretchRegion3Pressed = true;
        }else if(_stretchRegion4.contains(event->pos()))
        {
            _stretchRegion4Pressed = true;
        }
        _beginPoint = QCursor::pos();
        _leftTopPoint = geometry().topLeft();
        _beginRect = geometry();
    }
    QWidget::mousePressEvent(event);
}
...
void MobileWidget::mouseReleaseEvent(QMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
        _leftButtonPressed = false;
        _stretchRegion1Pressed = false;
        _stretchRegion2Pressed = false;
        _stretchRegion3Pressed = false;
        _stretchRegion4Pressed = false;
    }
    QWidget::mouseReleaseEvent(event);
}
...
void MobileWidget::keyPressEvent(QKeyEvent *event)
{
    if(event->key() == Qt::Key_F1)
    {
        qDebug() << __FILE__ << __LINE__;
        if(_direct == DIRECT_HORIZONTAL)
        {
            _direct = DIRECT_VERTICAL;
            int width = rect().width();
            int height = rect().height();
            resize(height, width);
        }else if(_direct == DIRECT_VERTICAL)
        {
            _direct = DIRECT_HORIZONTAL;
            int width = rect().width();
            int height = rect().height();
            resize(height, width);
        }
    }
}