QT自定義之滑動開關
阿新 • • 發佈:2020-08-21
本文例項為大家分享了QT自定義之滑動開關的具體程式碼,供大家參考,具體內容如下
寫了一個簡單的滑動開關, 不多說,上圖:
程式碼如下:
#ifndef SLIDERBUTTON_H #define SLIDERBUTTON_H #include <QWidget> #include <QMouseEvent> #include <QPaintEvent> #include <QPainter> #include <QPen> #include <QPainterPath> #include <QColor> #include <QTimer> #include <QDebug> namespace Ui { class SliderButton; } class SliderButton : public QWidget { Q_OBJECT public: explicit SliderButton(QWidget *parent = nullptr); ~SliderButton(); void set_button_size(const int &w,const int &h); void set_button_color(const QColor &,const QColor &,const QColor & ); signals: void signal_button_on(); void signal_button_off(); protected: virtual void mousePressEvent(QMouseEvent *event); virtual void paintEvent(QPaintEvent *event); public slots: void slot_update(); private: bool m_button_status; int m_circle_width; int m_button_pos; int m_move_distance; QColor m_backcolor_on; QColor m_backcolor_off; QColor m_circle_color; QTimer *m_timer; }; #endif // SLIDERBUTTON_H
set_button_size可設定button大小。
set_button_color可設定button顏色
#include "sliderbutton.h" SliderButton::SliderButton(QWidget *parent) : QWidget (parent),m_button_status(false),m_circle_width(30),m_button_pos(0),m_move_distance(20),m_backcolor_on(Qt::red),m_backcolor_off(Qt::blue),m_circle_color(Qt::black) { setWindowFlags(Qt::FramelessWindowHint); setAttribute(Qt::WA_TranslucentBackground); m_timer = new QTimer(this); connect(m_timer,SIGNAL(timeout()),this,SLOT(slot_update())); } SliderButton::~SliderButton() { } void SliderButton::set_button_size(const int & width,const int &heigh) { m_circle_width = heigh; m_move_distance = width; } void SliderButton::set_button_color(const QColor &on_color,const QColor &off_color,const QColor &button_color) { m_backcolor_on = on_color; m_backcolor_off = off_color; m_circle_color = button_color; } void SliderButton::mousePressEvent(QMouseEvent *event) { Q_UNUSED(event) if (false == m_button_status) { m_button_status = true; emit signal_button_off(); } else { m_button_status = false; emit signal_button_on(); } m_timer->start(1); } void SliderButton::paintEvent(QPaintEvent *event) { Q_UNUSED(event); QPainter painter(this); QPainterPath path; painter.setRenderHint(QPainter::Antialiasing,true); if (m_button_status == true) { painter.setBrush(m_backcolor_off); } else { painter.setBrush(m_backcolor_on); } QRect rect (0,m_circle_width,m_circle_width); int startX = rect.left() + rect.width() / 2; int startY = rect.top(); path.moveTo(startX,startY); path.arcTo(QRect(rect.left(),rect.top(),rect.width(),rect.height()),90,180); path.lineTo((rect.left() + m_move_distance ),rect.bottom() + 1); // the graph not connet,neet 1 pixcel path.arcTo(QRect((startX + m_move_distance),270,180); path.lineTo(startX,startY); painter.drawPath(path); // draw small circle painter.setBrush(m_circle_color); painter.drawEllipse(m_button_pos,m_circle_width); } void SliderButton::slot_update() { if (m_button_status == true) { m_button_pos += 1; if (m_button_pos == m_move_distance + m_circle_width / 2) { m_timer->stop(); } } else if(m_button_status == false) { m_button_pos -= 1; if (m_button_pos == 0) { m_timer->stop(); } } update(); }
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。