实现按钮的几种状态(QPushButton和QToolButton)

#pragma once

#include<QPushButton>
#include<QPainter>
#include<QMouseEvent>
class push_button : public QPushButton
{
	Q_OBJECT

public:
	push_button(QWidget *parent=0);
	~push_button();
	void setPicName(QString pic_name); //图片路径

protected:

	void enterEvent(QEvent *);
	void leaveEvent(QEvent *);
	void mousePressEvent(QMouseEvent *event);
	void mouseReleaseEvent(QMouseEvent *event);
	void paintEvent(QPaintEvent *);
private:

	//枚举按钮的几种状态
	enum ButtonStatus{NORMAL,ENTER,PRESS,NOSTATUS};
	ButtonStatus status;
	QString pic_name;

	int btn_width;  //按钮宽度
	int btn_height; //按钮高度
	int mouse_press;//按钮左键是否按下
};

#include "push_button.h"

push_button::push_button(QWidget *parent)
	: QPushButton(parent)
{
	//初始化状态
	status = NORMAL;  
	mouse_press = false;
}

push_button::~push_button()
{

}

void push_button::setPicName(QString pic_name)
{
	this->pic_name = pic_name;
	setFixedSize(QPixmap(pic_name).size());//获取图片大小
}
void push_button::enterEvent(QEvent *)
{
	status = ENTER;
	//当窗口程序需要升级或者重新绘制时,调用此成员函数.使用 repaint()和 update() 后，调用函数 paintEvent()。
	update();   
}
void push_button::leaveEvent(QEvent *)
{
	status = NORMAL;
	update();
}
void push_button::mousePressEvent(QMouseEvent *event)
{
	//点击鼠标左键
	if (event->button()==Qt::LeftButton) 
	{
		mouse_press = true;
		status = PRESS;
		update();
	}
}
void push_button::mouseReleaseEvent(QMouseEvent *event)
{
	//若已经点击,则将它处理为仅在这个图标上放的，也就是enter状态
	if (mouse_press&&this->rect().contains(event->pos()))
	{
		mouse_press = false;
		status = ENTER;
		update();
		emit clicked();
	}
}
void push_button::paintEvent(QPaintEvent *)
{
	QPainter painter(this);
	QPixmap pixmap;
	switch (status)
	{
	case NORMAL:

	     pixmap.load(pic_name); //加载图片
	     break;
	case ENTER:

	     pixmap.load(pic_name+QString("_hover"));
		 break;
	case PRESS:

		 pixmap.load(pic_name+QString("_pressed"));
		 break;
	case NOSTATUS:

		 pixmap.load(pic_name);
		 break;
	default:
		pixmap.load(pic_name);
	}
        painter.drawPixmap(rect(), pixmap);

   //这里的rect()是指当前窗体的显示区域

}

#include "tool_button.h"

tool_button::tool_button(QString pic_name,QWidget *parent)
	: QToolButton(parent)
{
	//初始化
	//设置文本颜色  一会总结用法(如电脑体验)
	QPalette text_palette = palette();
	text_palette.setColor(QPalette::ButtonText,QColor(30,30,30));
	setPalette(text_palette);

	//设置文本粗体
	QFont &text_font = const_cast<QFont &>(font());
	text_font.setWeight(QFont::Bold);
	//设置文字显示在图片的下面
	setToolButtonStyle(Qt::ToolButtonTextUnderIcon);

	//设置图标
	QPixmap pixmap(pic_name);
	setIcon(pixmap);
	setIconSize(pixmap.size());

	//设置大小
	setFixedSize(pixmap.width()+25,pixmap.height()+25);
	setAutoRaise(true);  //图标自动浮起
	setObjectName("transparentToolButton"); //设置对象名
	
	mouse_over = false;
	mouse_press = false;

}

tool_button::~tool_button()
{

}
void tool_button::enterEvent(QEvent *)
{
	mouse_over = true;
}
void tool_button::leaveEvent(QEvent *)
{
	mouse_over = false;
}
void tool_button::mousePressEvent(QMouseEvent *event)
{
	if (event->button()==Qt::LeftButton)
	{
		emit clicked();
	}
}
void tool_button::setMousePress(bool mouse_press)
{
	this->mouse_press = mouse_press;
	update();
}
void tool_button::paintEvent(QPaintEvent *event)
{
	if (mouse_over)
	{
		//绘制鼠标移到按钮上的按钮效果
		painterInfo(0,100,150);
	}
	else
	{
		if (mouse_press)
		{
			painterInfo(150, 100, 0);
		}
	}
	QToolButton::paintEvent(event);
}
//点击时,出现一个矩形框
void tool_button::painterInfo(int top_color, int middle_color, int botton_color)
{
	QPainter painter(this);
	QPen pen(Qt::NoBrush,1);
	painter.setPen(pen);
	//指定一个线性渐变画笔
	QLinearGradient linear(rect().topLeft(),rect().bottomLeft());
	linear.setColorAt(0,QColor(230,230,230,top_color));
	linear.setColorAt(0.5, QColor(210, 210, 210,middle_color));
	linear.setColorAt(1, QColor(190, 190, 190, botton_color));

	painter.setBrush(linear);
	painter.drawRect(rect());
}

#include "tool_button.h"

tool_button::tool_button(QString pic_name,QWidget *parent)
	: QToolButton(parent)
{
	//初始化
	//设置文本颜色  一会总结用法(如电脑体验)
	QPalette text_palette = palette();
	text_palette.setColor(QPalette::ButtonText,QColor(30,30,30));
	setPalette(text_palette);

	//设置文本粗体
	QFont &text_font = const_cast<QFont &>(font());
	text_font.setWeight(QFont::Bold);
	//设置文字显示在图片的下面
	setToolButtonStyle(Qt::ToolButtonTextUnderIcon);

	//设置图标
	QPixmap pixmap(pic_name);
	setIcon(pixmap);
	setIconSize(pixmap.size());

	//设置大小
	setFixedSize(pixmap.width()+25,pixmap.height()+25);
	setAutoRaise(true);  //图标自动浮起
	setObjectName("transparentToolButton"); //设置对象名
	
	mouse_over = false;
	mouse_press = false;

}

tool_button::~tool_button()
{

}
void tool_button::enterEvent(QEvent *)
{
	mouse_over = true;
}
void tool_button::leaveEvent(QEvent *)
{
	mouse_over = false;
}
void tool_button::mousePressEvent(QMouseEvent *event)
{
	if (event->button()==Qt::LeftButton)
	{
		emit clicked();
	}
}
void tool_button::setMousePress(bool mouse_press)
{
	this->mouse_press = mouse_press;
	update();
}
void tool_button::paintEvent(QPaintEvent *event)
{
	if (mouse_over)
	{
		//绘制鼠标移到按钮上的按钮效果
		painterInfo(0,100,150);
	}
	else
	{
		if (mouse_press)
		{
			painterInfo(150, 100, 0);
		}
	}
	QToolButton::paintEvent(event);
}
//点击时,出现一个矩形框
void tool_button::painterInfo(int top_color, int middle_color, int botton_color)
{
	QPainter painter(this);
	QPen pen(Qt::NoBrush,1);
	painter.setPen(pen);
	//指定一个线性渐变画笔
	QLinearGradient linear(rect().topLeft(),rect().bottomLeft());
	linear.setColorAt(0,QColor(230,230,230,top_color));
	linear.setColorAt(0.5, QColor(210, 210, 210,middle_color));
	linear.setColorAt(1, QColor(190, 190, 190, botton_color));

	painter.setBrush(linear);
	painter.drawRect(rect());
}

实现按钮的几种状态(QPushButton和QToolButton)

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