青岛网站营销推广,设计新颖的网站建站,怎么制作u盘启动盘,wordpress首页添加模块先看下效果#xff1a; 说明
自定义窗口控件的无边框,窗口事件由于没有系统自带边框,无法实现拖拽拉伸等事件的处理,一种方法就是重新重写主窗口的鼠标事件#xff0c;一种时通过nativeEvent事件处理。重写事件相对繁琐,我们这里推荐nativeEvent处理。注意后续我们在做win平…先看下效果 说明
自定义窗口控件的无边框,窗口事件由于没有系统自带边框,无法实现拖拽拉伸等事件的处理,一种方法就是重新重写主窗口的鼠标事件一种时通过nativeEvent事件处理。重写事件相对繁琐,我们这里推荐nativeEvent处理。注意后续我们在做win平台的进程通信也会用到它
我们这里使用的是nativeEvent
软件用到的样式表这里就不展示了大家可以自行调整
关键点说明
QPainterPath
QPainterPath类提供一个容器可以用来创建图形并且重复使用。绘制器路径是由许多图形构建基块如矩形、椭圆形、直线和曲线组成的对象。构建基块可以连接在封闭的子路径中例如作为矩形或椭圆。封闭路径具有重合的起点和终点。或者它们可以作为未闭合的子路径独立存在例如直线和曲线。
抗锯齿
抗锯齿是一种常见的图形处理技术用于减少在显示器上呈现的图像中出现的锯齿状边缘。 抗锯齿技术通过在边缘周围添加额外的像素来平滑边缘从而减少锯齿状边缘。这种技术基于亚像素级别的渲染它将颜色逐渐混合到边缘像素的周围像素中使得边缘更加平滑。打开抗锯齿可以使图像更加平滑尤其是在呈现锐利直线或曲线时。这种技术可以减少锯齿状边缘使得图像更加清晰更加真实。特别是在高分辨率屏幕上抗锯齿可以使得字体更加易读图像更加细腻。虽然抗锯齿可以使图像更加平滑但在某些情况下关闭抗锯齿可能更加合适。关闭抗锯齿可以提高图像处理速度。这里我们基于Qt绘图框架用的是
setRenderHint(QPainter::Antialiasing, true); //打开抗锯齿setRenderHint(QPainter::Antialiasing, false); //关闭抗锯齿
具体实现
CDlgComBase,无边框窗口,带阴影支持拖拽注意:
该实现方案不支持存在多个显示屏的情况该实现方案仅支持win平台
实现无边框带阴影的窗口代码下面的代码供大家参考
DlgComBase.h
#pragma once
#include DlgShadow.h
#include FrameComTitleBar.h
#include QVBoxLayoutclass CDlgComBase : public CDlgShadow
{Q_OBJECTpublic:CDlgComBase(QWidget *parent 0, bool bCenterDlg true, bool bHasTitleBar true);~CDlgComBase();void SetWindowsTitle(const QString strTitle, bool bCheckPos false);// 显示隐藏按钮void ShowMinBtn(bool bShow);void ShowMaxBtn(bool bShow);void ShowCloseBtn(bool bShow);void ShowSettingBtn(bool bShow);void ShowMaximized();void SetTitleBarObjectName(QString strObjectName);void SetHeadBarHeight(int nHeight);protected:virtual bool IsCaption(int nXPos, int nYPos);QWidget* GetCenterWidget() { return m_frameCenter; }virtual void OnNcLBtnDbClick(int nXPos, int nYPos);protected slots:void OnTimerCenter();private:CFrameComTitleBar m_frameComTitleBar;QVBoxLayout m_vBoxLayout;QFrame m_frameCenter;bool m_bHasTitleBar;
};
DlgComBase.cpp
#include DlgComBase.h
#include QTimerCDlgComBase::CDlgComBase(QWidget *parent, bool bCenterDlg, bool bHasTitleBar)
: CDlgShadow(parent), m_frameComTitleBar(this), m_frameCenter(this), m_bHasTitleBar(bHasTitleBar)
{m_frameComTitleBar.setObjectName(framComTitleBar);m_frameComTitleBar.setFixedHeight(GetHeadBarHeight());int nShadowLen GetShadowLen();m_vBoxLayout.setContentsMargins(nShadowLen, nShadowLen, nShadowLen, nShadowLen);m_vBoxLayout.setSpacing(0);if (m_bHasTitleBar){m_vBoxLayout.addWidget(m_frameComTitleBar);}m_vBoxLayout.addWidget(m_frameCenter);m_frameCenter.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);setLayout(m_vBoxLayout);if (bCenterDlg)QTimer::singleShot(10, this, SLOT(OnTimerCenter()));
}CDlgComBase::~CDlgComBase()
{}void CDlgComBase::SetWindowsTitle(const QString strTitle, bool bCheckPos)
{m_strTitle strTitle;m_frameComTitleBar.SetWindowsTitle(strTitle, bCheckPos);setWindowTitle(strTitle);
}void CDlgComBase::ShowMinBtn(bool bShow)
{m_frameComTitleBar.ShowMinBtn(bShow);
}void CDlgComBase::ShowMaxBtn(bool bShow)
{SetHasMaxFun(bShow);m_frameComTitleBar.ShowMaxBtn(bShow);
}void CDlgComBase::ShowCloseBtn(bool bShow)
{m_frameComTitleBar.ShowCloseBtn(bShow);
}void CDlgComBase::ShowSettingBtn(bool bShow)
{m_frameComTitleBar.ShowSettingBtn(bShow);
}bool CDlgComBase::IsCaption(int nXPos, int nYPos)
{QWidget* pChild childAt(nXPos, nYPos);if (pChild NULL){ADD_LOGD(CDlgComBase::IsCaption() return true);return true;}if (pChild m_frameComTitleBar || pChild m_frameComTitleBar.GetTitleLabel()){ADD_LOGD(CDlgComBase::IsCaption() return true);return true;}ADD_LOGD(CDlgComBase::IsCaption() return false);return false;
}void CDlgComBase::SetTitleBarObjectName(QString strObjectName)
{m_frameComTitleBar.setObjectName(strObjectName);
}void CDlgComBase::OnTimerCenter()
{CenterInParent((QWidget*)parent());
}void CDlgComBase::SetHeadBarHeight(int nHeight)
{m_frameComTitleBar.setFixedHeight(nHeight);CDlgShadow::SetHeadBarHeight(nHeight);
}void CDlgComBase::ShowMaximized()
{m_frameComTitleBar.ShowMaximized();CDlgShadow::ShowMaximized();
}void CDlgComBase::OnNcLBtnDbClick(int nXPos, int nYPos)
{if (m_bHasMaxFun)m_frameComTitleBar.ShowMaxRestoreBtn(m_bMaximized);CDlgShadow::OnNcLBtnDbClick(nXPos, nYPos);
}
DlgShadow.h
#ifndef SHADOWDLG_H
#define SHADOWDLG_H
#include QDialog
#include QMouseEventclass CDlgShadow : public QDialog
{Q_OBJECTpublic:CDlgShadow(QWidget *parent 0);~CDlgShadow();void HideDlg();void ShowDlg();void SetDlgBkColor(QColor clrDlgBk);void CenterInParent(QWidget* pWidget);void SetResizeable(bool bOn) { m_bResizeable bOn; }virtual void OnBtnSettingClicked(QPoint ptBtnBottom);virtual void OnBtnMinClicked();virtual void OnBtnMaxClicked();virtual void OnBtnRestoreClicked();virtual void OnBtnCloseClicked();virtual bool OnProHotKey(int nFsModifiers, int nVk);virtual void OnMsgEndSession();void ShowMaximized();protected:void paintEvent(QPaintEvent* event);void keyPressEvent(QKeyEvent* event);int GetShadowLen() { return m_nShadowLen; }int GetHeadBarHeight() { return m_nHeadBarHeight; }void SetHeadBarHeight(int nHeight);void SetHasMaxFun(bool bHasMaxFun) { m_bHasMaxFun bHasMaxFun; }bool nativeEvent(const QByteArray eventType, void* pMessage, long* pResult);virtual bool IsCaption(int nXPos, int nYPos);virtual void OnNcLBtnDbClick(int nXPos, int nYPos);virtual void OnKeyReturnPress();virtual void OnKeyEscapePress();virtual void OnNcLBtnClick();void closeEvent(QCloseEvent *event);protected:int m_nFrameLen; // 边框宽度单位像素int m_nShadowLen; // 阴影宽度单位像素int m_nHeadBarHeight; // 标题栏高度bool m_bHasMaxFun;bool m_bMaximized;bool m_bNcLBtnClk;bool m_bHideDlg;QString m_strTitle; // 调试时使用bool m_bHotKey; // 处理快捷键功能private:QRect m_rectDlg;QColor m_clrDlgBk;bool m_bResizeable;
};#endif // SHADOWDLG_H
DlgShadow.cpp
#include DlgShadow.h
#include QPainter
#include qmath.h
#include QApplication
#include QDesktopWidget
#include Windows.hCDlgShadow::CDlgShadow(QWidget *parent): QDialog(parent)
{setWindowFlags(Qt::FramelessWindowHint | Qt::Dialog | Qt::WindowMinimizeButtonHint);setAttribute(Qt::WA_TranslucentBackground);m_nFrameLen 10;m_nShadowLen 6;m_nHeadBarHeight 36;m_bMaximized false;m_bHasMaxFun true;m_clrDlgBk QColor(255, 255, 255);m_bResizeable true;m_bNcLBtnClk false;m_bHideDlg false;m_bHotKey false;
}CDlgShadow::~CDlgShadow()
{}void CDlgShadow::paintEvent(QPaintEvent* event)
{QPainterPath path;path.setFillRule(Qt::WindingFill);path.addRoundedRect(m_nShadowLen, m_nShadowLen, width() - 2 * m_nShadowLen, height() - 2 * m_nShadowLen, 2, 2);QPainter painter(this);painter.setRenderHint(QPainter::Antialiasing, true);painter.fillPath(path, QBrush(m_clrDlgBk));QColor color(0, 0, 0, 50);for (int i 0; i m_nShadowLen; i){QPainterPath pathShadow;pathShadow.setFillRule(Qt::WindingFill);pathShadow.addRoundedRect(m_nShadowLen - i, m_nShadowLen - i, width() - (m_nShadowLen - i) * 2, height() - (m_nShadowLen - i) * 2, 2 i, 2 i);int nAlpha 50 - qSqrt(i) * 25;if (nAlpha 0)nAlpha 0;color.setAlpha(nAlpha);painter.setPen(color);painter.drawPath(pathShadow);}painter.setRenderHint(QPainter::Antialiasing, false);painter.fillPath(path, QBrush(m_clrDlgBk));QDialog::paintEvent(event);
}void CDlgShadow::OnBtnMinClicked()
{showMinimized();
}void CDlgShadow::OnBtnMaxClicked()
{m_bMaximized true;m_rectDlg geometry();setGeometry(-m_nShadowLen, -m_nShadowLen, QApplication::desktop()-availableGeometry().width() m_nShadowLen * 2,QApplication::desktop()-availableGeometry().height() m_nShadowLen * 2);
}void CDlgShadow::OnBtnRestoreClicked()
{m_bMaximized false;setFixedHeight(QWIDGETSIZE_MAX);setGeometry(m_rectDlg);
}void CDlgShadow::SetDlgBkColor(QColor clrDlgBk)
{m_clrDlgBk clrDlgBk;
}void CDlgShadow::SetHeadBarHeight(int nHeight)
{m_nHeadBarHeight nHeight;
}bool CDlgShadow::IsCaption(int nXPos, int nYPos)
{if (childAt(nXPos, nYPos) 0){ADD_LOGD(CDlgShadow::IsCaption() return true);return true;}else{ADD_LOGD(CDlgShadow::IsCaption() return false);return false;}
}bool CDlgShadow::nativeEvent(const QByteArray eventType, void* pMessage, long* pResult)
{ADD_LOGD(QString(CDlgShadow::nativeEvent in));if (m_bHideDlg){ADD_LOGD(QString(CDlgShadow::nativeEvent out));return QDialog::nativeEvent(eventType, pMessage, pResult);}const MSG* pMsg static_castMSG*(pMessage);if (pMsg-message WM_NCHITTEST){RECT rect;SystemParametersInfo(SPI_GETWORKAREA, 0, rect, 0);int nWin32Width rect.right - rect.left;int nWin32Height rect.bottom - rect.top;int nQtWidth QApplication::desktop()-availableGeometry().width();int nQtHeight QApplication::desktop()-availableGeometry().height();int nMsgX ((int)(short)LOWORD(pMsg-lParam)) * nQtWidth / nWin32Width;int nMsgY ((int)(short)HIWORD(pMsg-lParam)) * nQtHeight / nWin32Height;int xPos nMsgX - frameGeometry().x();int yPos nMsgY - frameGeometry().y();if (IsCaption(xPos, yPos)){*pResult HTCAPTION;}else{ADD_LOGD(QString(CDlgShadow::nativeEvent out, WM_NCHITTEST pResult:%1).arg(*pResult));return false;}if (!m_bResizeable){if (*pResult HTCAPTION){ADD_LOGD(QString(CDlgShadow::nativeEvent out, WM_NCHITTEST pResult:%1).arg(*pResult));return true;}ADD_LOGD(QString(CDlgShadow::nativeEvent out, WM_NCHITTEST pResult:%1).arg(*pResult));return QDialog::nativeEvent(eventType, pMessage, pResult);}if (xPos 0 xPos m_nFrameLen)*pResult HTLEFT;if (xPos (width() - m_nFrameLen) xPos (width() - 0))*pResult HTRIGHT;if (yPos 0 yPos m_nFrameLen)*pResult HTTOP;if (yPos (height() - m_nFrameLen) yPos (height() - 0))*pResult HTBOTTOM;if (xPos 0 xPos m_nFrameLen yPos 0 yPos m_nFrameLen)*pResult HTTOPLEFT;if (xPos (width() - m_nFrameLen) xPos (width() - 0) yPos 0 yPos m_nFrameLen)*pResult HTTOPRIGHT;if (xPos 0 xPos m_nFrameLen yPos (height() - m_nFrameLen) yPos (height() - 0))*pResult HTBOTTOMLEFT;if (xPos (width() - m_nFrameLen) xPos (width() - 0) yPos (height() - m_nFrameLen) yPos (height() - 0))*pResult HTBOTTOMRIGHT;ADD_LOGD(QString(CDlgShadow::nativeEvent out, WM_NCHITTEST pResult:%1).arg(*pResult));return true;}else if (pMsg-message WM_NCLBUTTONDBLCLK){int xPos ((int)(short)LOWORD(pMsg-lParam)) - frameGeometry().x();int yPos ((int)(short)HIWORD(pMsg-lParam)) - frameGeometry().y();OnNcLBtnDbClick(xPos, yPos);ADD_LOGD(QString(CDlgShadow::nativeEvent out, WM_NCLBUTTONDBLCLK));return true;}else if (pMsg-message WM_NCLBUTTONDOWN){if (m_bNcLBtnClk){OnNcLBtnClick();}}else if (pMsg-message WM_HOTKEY){if (m_bHotKey){UINT nFuModifiers (UINT)LOWORD(pMsg-lParam); // 模式UINT nVirtKey (UINT)HIWORD(pMsg-lParam); // 键值if (OnProHotKey(nFuModifiers, nVirtKey)){ADD_LOGD(QString(CDlgShadow::nativeEvent out, WM_HOTKEY));return true;}}}else if (pMsg-message WM_ENDSESSION){ADD_LOGD(QStringLiteral(截获关机指令1));OnMsgEndSession();}ADD_LOGD(QString(CDlgShadow::nativeEvent out));return QDialog::nativeEvent(eventType, pMessage, pResult);
}void CDlgShadow::OnNcLBtnDbClick(int nXPos, int nYPos)
{if (!m_bHasMaxFun)return;if (nYPos m_nFrameLen m_nHeadBarHeight)return;if (m_bMaximized){OnBtnRestoreClicked();}else{OnBtnMaxClicked();}
}void CDlgShadow::CenterInParent(QWidget* pWidget)
{int nXPos 0;int nYPos 0;if (pWidget NULL){nXPos (QApplication::desktop()-width() - width()) / 2;nYPos (QApplication::desktop()-height() - height()) / 2;}else{QWidget* pParent (QWidget*)pWidget-parent();
// if (pParent ! NULL)
// {
// //QPoint ptGloba pWidget-mapToGlobal(QPoint(0, 0));
// nXPos /*ptGloba.x() */(pWidget-width() - width()) / 2;
// nYPos /*ptGloba.y() */(pWidget-height() - height()) / 2;
// }
// else{QPoint ptGloba pWidget-mapToGlobal(QPoint(0, 0));nXPos ptGloba.x() (pWidget-width() - width()) / 2;nYPos ptGloba.y() (pWidget-height() - height()) / 2;}}move(nXPos, nYPos);
}void CDlgShadow::keyPressEvent(QKeyEvent* event)
{if (event-key() Qt::Key_Enter || event-key() Qt::Key_Return/* || event-key() Qt::Key_Space*/){OnKeyReturnPress();event-accept();}else if (event-key() Qt::Key_Escape){OnKeyEscapePress();event-ignore();}
}void CDlgShadow::OnKeyReturnPress()
{//accept();
}void CDlgShadow::OnKeyEscapePress()
{//reject();
}void CDlgShadow::OnBtnCloseClicked()
{reject();
}void CDlgShadow::OnBtnSettingClicked(QPoint ptBtnBottom)
{}void CDlgShadow::OnNcLBtnClick()
{}void CDlgShadow::HideDlg()
{m_bHideDlg true;setWindowOpacity(0);
}void CDlgShadow::ShowDlg()
{setWindowOpacity(1);m_bHideDlg false;
}void CDlgShadow::closeEvent(QCloseEvent *event)
{event-ignore();OnBtnCloseClicked();
}bool CDlgShadow::OnProHotKey(int nFsModifiers, int nVk)
{return false;
}void CDlgShadow::OnMsgEndSession()
{}void CDlgShadow::ShowMaximized()
{m_bMaximized true;int nXPos (QApplication::desktop()-availableGeometry().width() - (1273 11)) / 2;int nYPos (QApplication::desktop()-availableGeometry().height() - (878 11)) / 2;int nMaxHeight QApplication::desktop()-availableGeometry().height() m_nShadowLen * 2;//setFixedHeight(nMaxHeight);setFixedHeight(QWIDGETSIZE_MAX);m_rectDlg QRect(nXPos, nYPos, (1273 11), (878 11));setGeometry(-m_nShadowLen, -m_nShadowLen, QApplication::desktop()-availableGeometry().width() m_nShadowLen * 2,QApplication::desktop()-availableGeometry().height() m_nShadowLen * 2);
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