Qtt利用QPainter实现铵扭switchButton

.pro

 1 #-------------------------------------------------
 2 #
 3 # Project created by QtCreator 2019-06-20T17:49:03
 4 #
 5 #-------------------------------------------------
 6 
 7 QT       += core gui
 8 
 9 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
10 
11 TARGET = SwitchButton
12 TEMPLATE = app
13 
14 
15 SOURCES += main.cpp
16         FrameSwitchButtons.cpp 
17     SwitchButton.cpp
18 
19 HEADERS  += FrameSwitchButtons.h 
20     SwitchButton.h
21 
22 FORMS    += FrameSwitchButtons.ui
View Code

main.cpp

 1 #include "FrameSwitchButtons.h"
 2 #include <QApplication>
 3 
 4 int main(int argc, char *argv[])
 5 {
 6     QApplication a(argc, argv);
 7     FrameSwitchButtons w;
 8     w.show();
 9 
10     return a.exec();
11 }
View Code
FrameSwitchButtons.h
 1 #ifndef FRAMESWITCHBUTTONS_H
 2 #define FRAMESWITCHBUTTONS_H
 3 
 4 #include <QWidget>
 5 
 6 namespace Ui {
 7 class FrameSwitchButtons;
 8 }
 9 
10 class FrameSwitchButtons : public QWidget
11 {
12     Q_OBJECT
13 
14 public:
15     explicit FrameSwitchButtons(QWidget *parent = 0);
16     ~FrameSwitchButtons();
17 
18 private:
19     Ui::FrameSwitchButtons *ui;
20 };
21 
22 #endif // FRAMESWITCHBUTTONS_H
View Code
FrameSwitchButtons.cpp
 1 #include "FrameSwitchButtons.h"
 2 #include "ui_FrameSwitchButtons.h"
 3 
 4 FrameSwitchButtons::FrameSwitchButtons(QWidget *parent) :
 5     QWidget(parent),
 6     ui(new Ui::FrameSwitchButtons)
 7 {
 8     ui->setupUi(this);
 9 }
10 
11 FrameSwitchButtons::~FrameSwitchButtons()
12 {
13     delete ui;
14 }
View Code
FrameSwitchButtons.ui
  1 <?xml version="1.0" encoding="UTF-8"?>
  2 <ui version="4.0">
  3  <class>FrameSwitchButtons</class>
  4  <widget class="QWidget" name="FrameSwitchButtons">
  5   <property name="geometry">
  6    <rect>
  7     <x>0</x>
  8     <y>0</y>
  9     <width>417</width>
 10     <height>310</height>
 11    </rect>
 12   </property>
 13   <property name="windowTitle">
 14    <string>FrameSwitchButtons</string>
 15   </property>
 16   <layout class="QHBoxLayout" name="horizontalLayout">
 17    <item>
 18     <spacer name="horizontalSpacer">
 19      <property name="orientation">
 20       <enum>Qt::Horizontal</enum>
 21      </property>
 22      <property name="sizeHint" stdset="0">
 23       <size>
 24        <width>140</width>
 25        <height>20</height>
 26       </size>
 27      </property>
 28     </spacer>
 29    </item>
 30    <item>
 31     <layout class="QVBoxLayout" name="verticalLayout">
 32      <item>
 33       <spacer name="verticalSpacer">
 34        <property name="orientation">
 35         <enum>Qt::Vertical</enum>
 36        </property>
 37        <property name="sizeHint" stdset="0">
 38         <size>
 39          <width>20</width>
 40          <height>40</height>
 41         </size>
 42        </property>
 43       </spacer>
 44      </item>
 45      <item>
 46       <widget class="SwitchButton" name="switchBtn1" native="true">
 47        <property name="minimumSize">
 48         <size>
 49          <width>100</width>
 50          <height>40</height>
 51         </size>
 52        </property>
 53       </widget>
 54      </item>
 55      <item>
 56       <widget class="SwitchButton" name="switchBtn2" native="true">
 57        <property name="minimumSize">
 58         <size>
 59          <width>100</width>
 60          <height>40</height>
 61         </size>
 62        </property>
 63       </widget>
 64      </item>
 65      <item>
 66       <widget class="SwitchButton" name="switchBtn3" native="true">
 67        <property name="minimumSize">
 68         <size>
 69          <width>100</width>
 70          <height>40</height>
 71         </size>
 72        </property>
 73       </widget>
 74      </item>
 75      <item>
 76       <spacer name="verticalSpacer_2">
 77        <property name="orientation">
 78         <enum>Qt::Vertical</enum>
 79        </property>
 80        <property name="sizeHint" stdset="0">
 81         <size>
 82          <width>20</width>
 83          <height>40</height>
 84         </size>
 85        </property>
 86       </spacer>
 87      </item>
 88     </layout>
 89    </item>
 90    <item>
 91     <spacer name="horizontalSpacer_2">
 92      <property name="orientation">
 93       <enum>Qt::Horizontal</enum>
 94      </property>
 95      <property name="sizeHint" stdset="0">
 96       <size>
 97        <width>139</width>
 98        <height>20</height>
 99       </size>
100      </property>
101     </spacer>
102    </item>
103   </layout>
104  </widget>
105  <layoutdefault spacing="6" margin="11"/>
106  <customwidgets>
107   <customwidget>
108    <class>SwitchButton</class>
109    <extends>QWidget</extends>
110    <header>switchbutton.h</header>
111    <container>1</container>
112   </customwidget>
113  </customwidgets>
114  <resources/>
115  <connections/>
116 </ui>
View Code
SwitchButton.h
  1 #ifndef SWITCHBUTTON_H
  2 #define SWITCHBUTTON_H
  3 
  4 #include <QWidget>
  5 #include <QTimer>
  6 #include <QColor>
  7 
  8 class SwitchButton : public QWidget
  9 {
 10     Q_OBJECT
 11 //    Q_PROPERTY(int m_space READ space WRITE setSpace)
 12 //    Q_PROPERTY(int m_radius READ radius WRITE setRadius)
 13 //    Q_PROPERTY(bool m_checked READ checked WRITE setChecked)
 14 //    Q_PROPERTY(bool m_showText READ showText WRITE setShowText)
 15 //    Q_PROPERTY(bool m_showCircle READ showCircel WRITE setShowCircle)
 16 //    Q_PROPERTY(bool m_animation READ animation WRITE setAnimation)
 17 
 18 //    Q_PROPERTY(QColor m_bgColorOn READ bgColorOn WRITE setBgColorOn)
 19 //    Q_PROPERTY(QColor m_bgColorOff READ bgColorOff WRITE setBgColorOff)
 20 //    Q_PROPERTY(QColor m_sliderColorOn READ sliderColorOn WRITE setSliderColorOn)
 21 //    Q_PROPERTY(QColor m_sliderColorOff READ sliderColorOff WRITE setSliderColorOff)
 22 //    Q_PROPERTY(QColor m_textColor READ textColor WRITE setTextColor)
 23 
 24 //    Q_PROPERTY(QString m_textOn READ textOn WRITE setTextOn)
 25 //    Q_PROPERTY(QString m_textOff READ textOff WRITE setTextOff)
 26 
 27 //    Q_PROPERTY(int m_step READ step WRITE setStep)
 28 //    Q_PROPERTY(int m_startX READ startX WRITE setStartX)
 29 //    Q_PROPERTY(int m_endX READ endX WRITE setEndX)
 30 
 31 public:
 32     explicit SwitchButton(QWidget *parent = 0);
 33     ~SwitchButton(){}
 34 
 35 signals:
 36     void statusChanged(bool checked);
 37 
 38 public slots:
 39 
 40 private slots:
 41     void updateValue();
 42 
 43 private:
 44     void drawBackGround(QPainter *painter);
 45     void drawSlider(QPainter *painter);
 46 
 47 protected:
 48     void paintEvent(QPaintEvent *ev);
 49     void mousePressEvent(QMouseEvent *ev);
 50 
 51 private:
 52     int m_space;                //滑块距离边界距离
 53     int m_radius;               //圆角角度
 54 
 55     bool m_checked;             //是否选中
 56     bool m_showText;            //是否显示文字
 57     bool m_showCircle;          //是否显示圆圈
 58     bool m_animation;           //是否使用动画
 59 
 60     QColor m_bgColorOn;         //打开时候的背景色
 61     QColor m_bgColorOff;        //关闭时候的背景色
 62     QColor m_sliderColorOn;     //打开时候滑块颜色
 63     QColor m_sliderColorOff;    //关闭时候滑块颜色
 64     QColor m_textColor;         //文字颜色
 65 
 66     QString m_textOn;           //打开时候的文字
 67     QString m_textOff;          //关闭时候的文字
 68 
 69     QTimer  *m_timer;            //动画定时器
 70     int     m_step;             //动画步长
 71     int     m_startX;           //滑块开始X轴坐标
 72     int     m_endX;             //滑块结束X轴坐标
 73 
 74 public:
 75     int space()                 const;
 76     int radius()                const;
 77     bool checked()              const;
 78     bool showText()             const;
 79     bool showCircel()           const;
 80     bool animation()            const;
 81 
 82     QColor bgColorOn()          const;
 83     QColor bgColorOff()         const;
 84     QColor sliderColorOn()      const;
 85     QColor sliderColorOff()     const;
 86     QColor textColor()          const;
 87 
 88     QString textOn()            const;
 89     QString textOff()           const;
 90 
 91     int step()                  const;
 92     int startX()                const;
 93     int endX()                  const;
 94 
 95 
 96 public Q_SLOTS:
 97     void setSpace(int space);
 98     void setRadius(int radius);
 99     void setChecked(bool checked);
100     void setShowText(bool show);
101     void setShowCircle(bool show);
102     void setAnimation(bool ok);
103 
104     void setBgColorOn(const QColor &color);
105     void setBgColorOff(const QColor &color);
106     void setSliderColorOn(const QColor &color);
107     void setSliderColorOff(const QColor &color);
108     void setTextColor(const QColor &color);
109 
110     void setTextOn(const QString &text);
111     void setTextOff(const QString &text);
112 
113 //    void setStep(int step);
114 //    void setStartX(int startX);
115 //    void setEndX(int endX);
116 
117 
118 };
119 
120 
121 
122 #endif // SWITCHBUTTON_H
View Code
SwitchButton.cpp
  1 #pragma execution_character_set("utf-8")
  2 #include "SwitchButton.h"
  3 #include <QPainter>
  4 
  5 SwitchButton::SwitchButton(QWidget *parent) : QWidget(parent)
  6 {
  7     m_space = 2;
  8     m_radius = 5;
  9     m_checked = false;
 10     m_showText = true;
 11     m_showText = false;
 12     m_animation = true;
 13 
 14     m_bgColorOn = QColor(21, 156, 119);
 15     m_bgColorOff = QColor(111, 122, 126);
 16 
 17     m_sliderColorOn = QColor(255, 255, 255);
 18     m_sliderColorOff = QColor(255, 255, 255);
 19 
 20     m_textColor = QColor(255, 255, 255);
 21 
 22     m_textOn = "开启";
 23     m_textOff = "关闭";
 24 
 25     m_step = 0;
 26     m_startX = 0;
 27     m_endX = 0;
 28 
 29     m_timer = new QTimer(this);
 30     m_timer->setInterval(30);
 31     connect(m_timer, SIGNAL(timeout()), this, SLOT(updateValue()));
 32 }
 33 
 34 
 35 void SwitchButton::drawBackGround(QPainter *painter)
 36 {
 37     painter->save();
 38     painter->setPen(Qt::NoPen);
 39 
 40     QColor bgColor = m_checked ? m_bgColorOn : m_bgColorOff;
 41     if (isEnabled()) {
 42         bgColor.setAlpha(60);
 43     }
 44 
 45     painter->setBrush(bgColor);
 46 
 47     QRect rect(0, 0, width(), height());
 48     int side = qMin(width(), height());
 49 
 50     //左侧半圆
 51     QPainterPath path1;
 52     path1.addEllipse(rect.x(), rect.y(), side, side);
 53 
 54     //右侧半圆
 55     QPainterPath path2;
 56     path2.addEllipse(rect.width() - side, rect.y(), side, side);
 57 
 58     //中间的矩形
 59     QPainterPath path3;
 60     path3.addRect(rect.x() + side / 2, rect.y(), rect.width() - side, height());
 61 
 62     QPainterPath path = path1 + path2 + path3;
 63     painter->drawPath(path);
 64 
 65     //绘制文本
 66 
 67     //滑块半径
 68     int sliderWidth = qMin(height(), width()) - m_space * 2 - 5;
 69     if (m_checked){
 70         QRect textRect(0, 0, width() - sliderWidth, height());
 71         painter->setPen(QPen(m_textColor));
 72         painter->drawText(textRect, Qt::AlignCenter, m_textOn);
 73     } else {
 74         QRect textRect(sliderWidth, 0, width() - sliderWidth, height());
 75         painter->setPen(QPen(m_textColor));
 76         painter->drawText(textRect, Qt::AlignCenter, m_textOff);
 77     }
 78 
 79     painter->restore();
 80 }
 81 
 82 void SwitchButton::drawSlider(QPainter *painter)
 83 {
 84     painter->save();
 85     painter->setPen(Qt::NoPen);
 86 
 87     QColor color = m_checked ? m_sliderColorOn : m_sliderColorOff;
 88 
 89     painter->setBrush(QBrush(color));
 90 
 91     int sliderWidth = qMin(width(), height()) - m_space * 2;
 92     QRect rect(m_space + m_startX, m_space, sliderWidth, sliderWidth);
 93     painter->drawEllipse(rect);
 94 
 95     painter->restore();
 96 }
 97 
 98 void SwitchButton::paintEvent(QPaintEvent *ev)
 99 {
100     //启用反锯齿
101     QPainter painter(this);
102     painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
103 
104     //绘制背景
105     drawBackGround(&painter);
106 
107     //绘制滑块
108     drawSlider(&painter);
109 }
110 
111 void SwitchButton::mousePressEvent(QMouseEvent *ev)
112 {
113     Q_UNUSED(ev)
114 
115     m_checked = !m_checked;
116     emit statusChanged(m_checked);
117 
118     //计算步长
119     m_step = width() / 10;
120 
121     //计算滑块X轴终点坐标
122     if (m_checked) {
123         m_endX = width() - height();
124     } else {
125         m_endX = 0;
126     }
127 
128     //判断是否使用动画
129     if (m_animation) {
130         m_timer->start();
131     } else{
132         m_startX = m_endX;
133         update();
134     }
135 }
136 
137 void SwitchButton::updateValue()
138 {
139     if (m_checked) {
140         if (m_startX < m_endX) {
141             m_startX += m_step;
142         } else {
143             m_startX = m_endX;
144             m_timer->stop();
145         }
146     } else {
147         if (m_startX > m_endX) {
148             m_startX -= m_step;
149         } else {
150             m_startX = m_endX;
151             m_timer->stop();
152         }
153     }
154 
155     update();
156 }
157 
158 int SwitchButton::space() const
159 {
160     return m_space;
161 }
162 
163 int SwitchButton::radius() const
164 {
165     return m_radius;
166 }
167 
168 bool SwitchButton::checked() const
169 {
170     return m_checked;
171 }
172 
173 bool SwitchButton::showText() const
174 {
175     return m_showText;
176 }
177 
178 bool SwitchButton::showCircel() const
179 {
180     return m_showCircle;
181 }
182 
183 bool SwitchButton::animation() const
184 {
185     return m_animation;
186 }
187 
188 QColor SwitchButton::bgColorOn() const
189 {
190     return m_bgColorOn;
191 }
192 
193 QColor SwitchButton::bgColorOff() const
194 {
195     return m_bgColorOff;
196 }
197 
198 QColor SwitchButton::sliderColorOn() const
199 {
200     return m_sliderColorOn;
201 }
202 
203 QColor SwitchButton::sliderColorOff() const
204 {
205     return m_sliderColorOff;
206 }
207 
208 QColor SwitchButton::textColor() const
209 {
210     return m_textColor;
211 }
212 
213 QString SwitchButton::textOn() const
214 {
215     return m_textOn;
216 }
217 
218 QString SwitchButton::textOff() const
219 {
220     return m_textOff;
221 }
222 
223 int SwitchButton::step() const
224 {
225     return m_step;
226 }
227 
228 int SwitchButton::startX() const
229 {
230     return m_startX;
231 }
232 
233 int SwitchButton::endX() const
234 {
235     return m_endX;
236 }
237 
238 void SwitchButton::setSpace(int space)
239 {
240     if (m_space != space) {
241         m_space = space;
242         update();
243     }
244 }
245 
246 void SwitchButton::setRadius(int radius)
247 {
248     if (m_radius != radius) {
249         m_radius = radius;
250         update();
251     }
252 }
253 
254 void SwitchButton::setChecked(bool checked)
255 {
256     if (m_checked != checked) {
257         m_checked = checked;
258         update();
259     }
260 }
261 
262 void SwitchButton::setShowText(bool show)
263 {
264     if (m_showText != show) {
265         m_showText = show;
266         update();
267     }
268 }
269 
270 void SwitchButton::setShowCircle(bool show)
271 {
272     if (m_showCircle != show) {
273         m_showCircle = show;
274         update();
275     }
276 }
277 
278 void SwitchButton::setAnimation(bool ok)
279 {
280     if (m_animation != ok) {
281         m_animation = ok;
282         update();
283     }
284 }
285 
286 void SwitchButton::setBgColorOn(const QColor &color)
287 {
288     if (m_bgColorOn != color) {
289         m_bgColorOn = color;
290         update();
291     }
292 }
293 
294 void SwitchButton::setBgColorOff(const QColor &color)
295 {
296     if (m_bgColorOff != color) {
297         m_bgColorOff = color;
298         update();
299     }
300 }
301 
302 void SwitchButton::setSliderColorOn(const QColor &color)
303 {
304     if (m_sliderColorOn != color) {
305         m_sliderColorOn = color;
306         update();
307     }
308 }
309 
310 void SwitchButton::setSliderColorOff(const QColor &color)
311 {
312     if (m_sliderColorOff != color) {
313         m_sliderColorOff = color;
314         update();
315     }
316 }
317 
318 void SwitchButton::setTextColor(const QColor &color)
319 {
320     if (m_textColor != color) {
321         m_textColor = color;
322         update();
323     }
324 }
325 
326 void SwitchButton::setTextOn(const QString &text)
327 {
328     if (m_textOn != text) {
329         m_textOn = text;
330         update();
331     }
332 }
333 
334 void SwitchButton::setTextOff(const QString &text)
335 {
336     if (m_textOff != text) {
337         m_textOff = text;
338         update();
339     }
340 }
341 
342 //void SwitchButton::setStep(int step)
343 //{
344 //    if (m_step != step) {
345 //        m_step = step;
346 //        update();
347 //    }
348 //}
349 
350 //void SwitchButton::setStartX(int startX)
351 //{
352 
353 //}
354 
355 //void SwitchButton::setEndX(int endX)
356 //{
357 
358 //}
View Code
<?xmlversion="1.0"encoding="UTF-8"?>
<uiversion="4.0">
<class>FrameSwitchButtons</class>
<widgetclass="QWidget"name="FrameSwitchButtons">
<propertyname="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>417</width>
<height>310</height>
</rect>
</property>
<propertyname="windowTitle">
<string>FrameSwitchButtons</string>
</property>
<layoutclass="QHBoxLayout"name="horizontalLayout">
<item>
<spacername="horizontalSpacer">
<propertyname="orientation">
<enum>Qt::Horizontal</enum>
</property>
<propertyname="sizeHint"stdset="0">
<size>
<width>140</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<layoutclass="QVBoxLayout"name="verticalLayout">
<item>
<spacername="verticalSpacer">
<propertyname="orientation">
<enum>Qt::Vertical</enum>
</property>
<propertyname="sizeHint"stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
<item>
<widgetclass="SwitchButton"name="switchBtn1"native="true">
<propertyname="minimumSize">
<size>
<width>100</width>
<height>40</height>
</size>
</property>
</widget>
</item>
<item>
<widgetclass="SwitchButton"name="switchBtn2"native="true">
<propertyname="minimumSize">
<size>
<width>100</width>
<height>40</height>
</size>
</property>
</widget>
</item>
<item>
<widgetclass="SwitchButton"name="switchBtn3"native="true">
<propertyname="minimumSize">
<size>
<width>100</width>
<height>40</height>
</size>
</property>
</widget>
</item>
<item>
<spacername="verticalSpacer_2">
<propertyname="orientation">
<enum>Qt::Vertical</enum>
</property>
<propertyname="sizeHint"stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<spacername="horizontalSpacer_2">
<propertyname="orientation">
<enum>Qt::Horizontal</enum>
</property>
<propertyname="sizeHint"stdset="0">
<size>
<width>139</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</widget>
<layoutdefaultspacing="6"margin="11"/>
<customwidgets>
<customwidget>
<class>SwitchButton</class>
<extends>QWidget</extends>
<header>switchbutton.h</header>
<container>1</container>
</customwidget>
</customwidgets>
<resources/>
<connections/>
</ui>





    
    
        
作者：疯狂Delphi

        
        
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          原文地址：https://www.cnblogs.com/FKdelphi/p/14654135.html