301 lines
7.5 KiB
C++
301 lines
7.5 KiB
C++
#include "mytitlebar.h"
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#include <QHBoxLayout>
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#include <QPainter>
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#include <QFile>
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#include <QMouseEvent>
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#include <QDebug>
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#define BUTTON_HEIGHT 30 //按钮高度
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#define BUTTON_WIDTH 30 //按钮宽度
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#define TITLE_HEIGHT 35 //标题栏高度
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MyTitleBar::MyTitleBar(QWidget *parent)
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: QWidget(parent)
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, m_colorR(120)
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, m_colorG(120)
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, m_colorB(120)
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, m_isPressed(false)
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, m_buttonType(MIN_MAX_BUTTON)
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{
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//初始化
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initControl();
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initConnections();
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loadStyleSheet("MyTitle");
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}
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MyTitleBar::~MyTitleBar()
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{
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}
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//初始化控件
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void MyTitleBar::initControl()
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{
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//按钮样式
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QString btnStyle(
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"QWidget{"
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"border: none;background-color: rgba(0, 0, 0, 0);"
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"}"
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"QToolTip{"
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"border: none;background-color: rgb(235, 235, 255);color: rgb(45, 45, 45);font-size:15px;"
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"}"
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"QPushButton:hover{"
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"background-color: rgba(255, 0, 0, 30);"
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"}"
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"QPushButton:pressed{"
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"background-color: rgba(255, 0, 0, 30);"
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"}"
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);
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m_pIcon = new QLabel(this);
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m_pIcon->setObjectName("IconContent");
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m_pTitleContent = new QLabel(this);
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m_pButtonMin = new QPushButton(this);
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m_pButtonRestore = new QPushButton(this);
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m_pButtonMax = new QPushButton(this);
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m_pButtonClose = new QPushButton(this);
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m_pButtonMin->setFixedSize(QSize(BUTTON_WIDTH, BUTTON_HEIGHT));
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m_pButtonRestore->setFixedSize(QSize(BUTTON_WIDTH, BUTTON_HEIGHT));
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m_pButtonMax->setFixedSize(QSize(BUTTON_WIDTH, BUTTON_HEIGHT));
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m_pButtonClose->setFixedSize(QSize(BUTTON_WIDTH, BUTTON_HEIGHT));
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m_pTitleContent->setObjectName("TitleContent");
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m_pButtonMin->setObjectName("ButtonMin");
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m_pButtonRestore->setObjectName("ButtonRestore");
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m_pButtonMax->setObjectName("ButtonMax");
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m_pButtonClose->setObjectName("ButtonClose");
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m_pButtonClose->setIconSize(QSize(30, 30));
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m_pButtonClose->setIcon(QIcon(":/resource/close.png"));
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m_pButtonClose->setToolTip("关闭");
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m_pButtonClose->setStyleSheet(btnStyle);
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QHBoxLayout* mylayout = new QHBoxLayout(this);
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mylayout->addWidget(m_pIcon);
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mylayout->addWidget(m_pTitleContent);
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mylayout->addWidget(m_pButtonMin);
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mylayout->addWidget(m_pButtonRestore);
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mylayout->addWidget(m_pButtonMax);
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mylayout->addWidget(m_pButtonClose);
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mylayout->setContentsMargins(5, 0, 0, 0);
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mylayout->setSpacing(1);
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m_pTitleContent->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
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this->setFixedHeight(TITLE_HEIGHT);
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this->setWindowFlags(Qt::FramelessWindowHint);
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}
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//信号槽的绑定
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void MyTitleBar::initConnections()
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{
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connect(m_pButtonMin, SIGNAL(clicked()), this, SLOT(onButtonMinClicked()));
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connect(m_pButtonRestore, SIGNAL(clicked()), this, SLOT(onButtonRestoreClicked()));
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connect(m_pButtonMax, SIGNAL(clicked()), this, SLOT(onButtonMaxClicked()));
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connect(m_pButtonClose, SIGNAL(clicked()), this, SLOT(onButtonCloseClicked()));
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}
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//设置标题栏背景色,在paintEvent事件中进行绘制标题栏背景色
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//在构造函数中给了默认值，可以外部设置颜色值改变标题栏背景色
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void MyTitleBar::setBackgroundColor(int r, int g, int b)
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{
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m_colorR = r;
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m_colorG = g;
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m_colorB = b;
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//重新绘制(调用paintEvent事件)
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update();
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}
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//设置标题栏图标
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void MyTitleBar::setTitleIcon(QString filePath)
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{
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QPixmap titleIcon(filePath);
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m_pIcon->setPixmap(titleIcon.scaled(32, 32));
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}
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//设置标题内容
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void MyTitleBar::setTitleContent(QString titleContent)
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{
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m_pTitleContent->setText(titleContent);
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m_titleContent = titleContent;
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}
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//设置标题栏长度
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void MyTitleBar::setTitleWidth(int width)
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{
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this->setFixedWidth(width);
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}
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//设置标题栏上按钮类型
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//由于不同窗口标题栏上的按钮都不一样，所以可以自定义标题栏中的按钮
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//这里提供了四个按钮，分别为最小化、还原、最大化、关闭按钮，如果需要其他按钮可自行添加设置
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void MyTitleBar::setButtonType(ButtonType buttonType)
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{
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m_buttonType = buttonType;
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switch (buttonType)
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{
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case MIN_BUTTON:
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{
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m_pButtonRestore->setVisible(false);
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m_pButtonMax->setVisible(false);
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}
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break;
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case MIN_MAX_BUTTON:
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{
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m_pButtonRestore->setVisible(false);
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}
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break;
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case ONLY_CLOSE_BUTTON:
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{
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m_pButtonMin->setVisible(false);
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m_pButtonRestore->setVisible(false);
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m_pButtonMax->setVisible(false);
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}
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break;
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default:
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break;
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}
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}
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//设置标题栏中的标题是否会自动滚动，跑马灯的效果
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void MyTitleBar::setTitleRoll()
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{
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connect(&m_titleRollTimer, SIGNAL(timeout()), this, SLOT(onRollTitle()));
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m_titleRollTimer.start(200);
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}
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//保存窗口最大化前窗口的位置以及大小
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void MyTitleBar::saveRestoreInfo(const QPoint point, const QSize size)
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{
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m_restorePos = point;
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m_restoreSize = size;
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}
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//获取窗口最大化前窗口的位置以及大小
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void MyTitleBar::getRestoreInfo(QPoint& point, QSize& size)
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{
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point = m_restorePos;
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size = m_restoreSize;
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}
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//绘制标题栏背景色
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void MyTitleBar::paintEvent(QPaintEvent *event)
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{
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//设置背景色
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QPainter painter(this);
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QPainterPath pathBack;
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pathBack.setFillRule(Qt::WindingFill);
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pathBack.addRoundedRect(QRect(0, 0, this->width(), this->height()), 3, 3);
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painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
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painter.fillPath(pathBack, QBrush(QColor(m_colorR, m_colorG, m_colorB)));
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//当窗口最大化或者还原后，窗口长度变了，标题栏的长度应当一起改变
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if (this->width() != this->parentWidget()->width())
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{
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this->setFixedWidth(this->parentWidget()->width());
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}
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QWidget::paintEvent(event);
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}
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//双击响应事件，主要是实现双击标题栏进行最大化和最小化操作
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void MyTitleBar::mouseDoubleClickEvent(QMouseEvent *event)
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{
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//只有存在最大化、还原按钮时双击才有效
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if (m_buttonType == MIN_MAX_BUTTON)
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{
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//通过最大化按钮的状态判断当前窗口是处于最大化还是原始大小状态
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//或者通过单独设置变量来表示当前窗口状态
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if (m_pButtonMax->isVisible())
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{
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onButtonMaxClicked();
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}
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else
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{
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onButtonRestoreClicked();
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}
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}
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return QWidget::mouseDoubleClickEvent(event);
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}
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//以下通过mousePressEvent、mouseMoveEvent、mouseReleaseEvent三个事件实现了鼠标拖动标题栏移动窗口的效果
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void MyTitleBar::mousePressEvent(QMouseEvent *event)
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{
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if (m_buttonType == MIN_MAX_BUTTON)
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{
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//在窗口最大化时禁止拖动窗口
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if (m_pButtonMax->isVisible())
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{
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m_isPressed = true;
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m_startMovePos = event->globalPos();
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}
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}
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else
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{
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m_isPressed = true;
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m_startMovePos = event->globalPos();
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}
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return QWidget::mousePressEvent(event);
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}
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void MyTitleBar::mouseMoveEvent(QMouseEvent *event)
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{
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if (m_isPressed)
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{
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QPoint movePoint = event->globalPos() - m_startMovePos;
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QPoint widgetPos = this->parentWidget()->pos();
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m_startMovePos = event->globalPos();
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this->parentWidget()->move(widgetPos.x() + movePoint.x(), widgetPos.y() + movePoint.y());
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}
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return QWidget::mouseMoveEvent(event);
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}
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void MyTitleBar::mouseReleaseEvent(QMouseEvent *event)
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{
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m_isPressed = false;
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return QWidget::mouseReleaseEvent(event);
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}
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//加载本地样式文件
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//可以将样式直接写在文件中，程序运行时直接加载进来
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void MyTitleBar::loadStyleSheet(const QString &sheetName)
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{
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QFile file(":/Resource Files/" + sheetName + ".css");
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file.open(QFile::ReadOnly);
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if (file.isOpen())
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{
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QString styleSheet = this->styleSheet();
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styleSheet += QLatin1String(file.readAll());
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this->setStyleSheet(styleSheet);
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}
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}
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//以下为按钮操作响应的槽
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void MyTitleBar::onButtonMinClicked()
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{
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emit signalButtonMinClicked();
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}
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void MyTitleBar::onButtonRestoreClicked()
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{
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m_pButtonRestore->setVisible(false);
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m_pButtonMax->setVisible(true);
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emit signalButtonRestoreClicked();
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}
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void MyTitleBar::onButtonMaxClicked()
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{
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m_pButtonMax->setVisible(false);
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m_pButtonRestore->setVisible(true);
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emit signalButtonMaxClicked();
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}
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void MyTitleBar::onButtonCloseClicked()
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{
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emit signalButtonCloseClicked();
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}
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//该方法主要是让标题栏中的标题显示为滚动的效果
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void MyTitleBar::onRollTitle()
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{
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static int nPos = 0;
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QString titleContent = m_titleContent;
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//当截取的位置比字符串长时，从头开始
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if (nPos > titleContent.length())
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nPos = 0;
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m_pTitleContent->setText(titleContent.mid(nPos));
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nPos++;
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}
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