forked from github_mirror/framelesshelper
Add a cross-platform frameless window example
Written in pure Qt. Cross-platform. Lacking the system features on Windows of course. Signed-off-by: Yuhang Zhao <2546789017@qq.com>
This commit is contained in:
Yuhang Zhao
parent
e5cd434500
commit
8e78e275e4
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@ -0,0 +1,6 @@
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TARGET = QWidget2
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TEMPLATE = app
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QT += widgets
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HEADERS += widget.h
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SOURCES += widget.cpp main.cpp
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include($$PWD/../common.pri)
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@ -0,0 +1,63 @@
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/*
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* MIT License
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*
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* Copyright (C) 2020 by wangwenx190 (Yuhang Zhao)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "widget.h"
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#include <QApplication>
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#include <QStyleOption>
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int main(int argc, char *argv[])
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{
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QCoreApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
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// High DPI scaling is enabled by default from Qt 6
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#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
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// Windows: we are using the manifest file to get maximum compatibility
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// because some APIs are not supprted on old systems such as Windows 7
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// and Windows 8. And once we have set the DPI awareness level in the
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// manifest file, any attemptation to try to change it through API will
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// fail. In other words, Qt won't be able to enable or disable high DPI
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// scaling or change the DPI awareness level once we have set it in the
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// manifest file. So the following two lines are uesless actually (However,
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// they are still useful on other platforms).
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QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
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#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
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// Don't round the scale factor.
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// This will break QWidget applications because they can't render correctly.
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// Qt Quick applications won't have this issue.
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QGuiApplication::setHighDpiScaleFactorRoundingPolicy(
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Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
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#endif
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#endif
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QApplication application(argc, argv);
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Widget widget;
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QStyleOption option;
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option.initFrom(&widget);
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const QIcon icon = widget.style()->standardIcon(QStyle::SP_ComputerIcon, &option);
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widget.setWindowIcon(icon);
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widget.setWindowTitle(QObject::tr("Hello, World!"));
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widget.resize(800, 600);
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widget.show();
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return QApplication::exec();
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}
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@ -0,0 +1,259 @@
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/*
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* MIT License
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*
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* Copyright (C) 2020 by wangwenx190 (Yuhang Zhao)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "widget.h"
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#include "../../framelesshelper.h"
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#include <QEvent>
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#include <QGraphicsDropShadowEffect>
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#include <QHBoxLayout>
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#include <QLabel>
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#include <QPainter>
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#include <QPushButton>
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#include <QSpacerItem>
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#include <QVBoxLayout>
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Q_GLOBAL_STATIC(FramelessHelper, framelessHelper)
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ContentsWidget::ContentsWidget(QWidget *parent) : QWidget(parent)
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{
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setAttribute(Qt::WA_StyledBackground);
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}
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void ContentsWidget::setShouldDrawWindowBorder(const bool val)
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{
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m_bShouldDrawWindowBorder = val;
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update();
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}
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bool ContentsWidget::getShouldDrawWindowBorder() const
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{
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return m_bShouldDrawWindowBorder;
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}
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void ContentsWidget::paintEvent(QPaintEvent *event)
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{
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QWidget::paintEvent(event);
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if (m_bShouldDrawWindowBorder) {
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QPainter painter(this);
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painter.save();
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painter.setPen({Qt::black, 1.5});
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painter.drawLine(0, 0, width(), 0);
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painter.drawLine(0, height(), width(), height());
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painter.drawLine(0, 0, 0, height());
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painter.drawLine(width(), 0, width(), height());
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painter.restore();
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}
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}
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Widget::Widget(QWidget *parent) : QWidget(parent)
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{
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titleBarHeight = framelessHelper()->getTitleBarHeight();
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createWinId();
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setupUi();
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initBackgroundWindow();
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installEventFilter(this);
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}
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bool Widget::isNormal() const
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{
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return (!isMinimized() && !isMaximized() && !isFullScreen());
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}
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void Widget::setupUi()
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{
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contentsWidget = new ContentsWidget(this);
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contentsWidget->setObjectName(QLatin1String("contentsWidget"));
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contentsWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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const QSize systemButtonSize = {qRound(titleBarHeight * 1.5), titleBarHeight};
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const QSize systemIconSize = {17, 17};
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titleBarWidget = new QWidget(contentsWidget);
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titleBarWidget->setObjectName(QLatin1String("titleBarWidget"));
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titleBarWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
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titleBarWidget->setFixedHeight(titleBarHeight);
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windowIconButton = new QPushButton(this);
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windowIconButton->setObjectName(QLatin1String("windowIconButton"));
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windowIconButton->setFixedSize(systemIconSize);
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windowIconButton->setIconSize(systemIconSize);
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connect(this, &Widget::windowIconChanged, windowIconButton, &QPushButton::setIcon);
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windowTitleLabel = new QLabel(this);
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QFont f = font();
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f.setPointSizeF(8.63);
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windowTitleLabel->setFont(f);
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connect(this, &Widget::windowTitleChanged, windowTitleLabel, &QLabel::setText);
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minimizeButton = new QPushButton(this);
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minimizeButton->setObjectName(QLatin1String("minimizeButton"));
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minimizeButton->setFixedSize(systemButtonSize);
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minimizeButton->setIconSize(systemButtonSize);
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minimizeButton->setIcon(QIcon(QLatin1String(":/images/button_minimize_black.svg")));
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connect(minimizeButton, &QPushButton::clicked, this, &Widget::showMinimized);
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maximizeButton = new QPushButton(this);
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maximizeButton->setObjectName(QLatin1String("maximizeButton"));
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maximizeButton->setFixedSize(systemButtonSize);
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maximizeButton->setIconSize(systemButtonSize);
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maximizeButton->setIcon(QIcon(QLatin1String(":/images/button_maximize_black.svg")));
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connect(maximizeButton, &QPushButton::clicked, this, [this]() {
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if (isMaximized()) {
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showNormal();
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} else {
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showMaximized();
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}
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});
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closeButton = new QPushButton(this);
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closeButton->setObjectName(QLatin1String("closeButton"));
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closeButton->setFixedSize(systemButtonSize);
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closeButton->setIconSize(systemButtonSize);
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closeButton->setIcon(QIcon(QLatin1String(":/images/button_close_black.svg")));
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connect(closeButton, &QPushButton::clicked, this, &Widget::close);
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const auto titleBarWidgetLayout = new QHBoxLayout(titleBarWidget);
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titleBarWidgetLayout->setSpacing(0);
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titleBarWidgetLayout->setContentsMargins(0, 0, 0, 0);
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titleBarWidgetLayout->addSpacerItem(
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new QSpacerItem(7, 20, QSizePolicy::Fixed, QSizePolicy::Fixed));
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titleBarWidgetLayout->addWidget(windowIconButton);
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titleBarWidgetLayout->addSpacerItem(
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new QSpacerItem(3, 20, QSizePolicy::Fixed, QSizePolicy::Fixed));
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titleBarWidgetLayout->addWidget(windowTitleLabel);
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titleBarWidgetLayout->addStretch();
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titleBarWidgetLayout->addWidget(minimizeButton);
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titleBarWidgetLayout->addWidget(maximizeButton);
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titleBarWidgetLayout->addWidget(closeButton);
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titleBarWidget->setLayout(titleBarWidgetLayout);
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const auto contentsWidgetLayout = new QVBoxLayout(contentsWidget);
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contentsWidgetLayout->setSpacing(0);
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contentsWidgetLayout->setContentsMargins(1, 1, 1, 0);
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contentsWidgetLayout->addWidget(titleBarWidget);
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contentsWidgetLayout->addStretch();
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contentsWidget->setLayout(contentsWidgetLayout);
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const auto backgroundWindowLayout = new QVBoxLayout(this);
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backgroundWindowLayout->setSpacing(0);
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backgroundWindowLayout->addWidget(contentsWidget);
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setLayout(backgroundWindowLayout);
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setStyleSheet(QLatin1String(R"(
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#contentsWidget {
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background-color: #f0f0f0;
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}
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#titleBarWidget {
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background-color: white;
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}
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#windowIconButton, #minimizeButton, #maximizeButton, #closeButton {
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border-style: none;
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background-color: transparent;
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}
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#minimizeButton:hover, #maximizeButton:hover {
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background-color: #80c7c7c7;
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}
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#minimizeButton:pressed, #maximizeButton:pressed {
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background-color: #80808080;
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}
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#closeButton:hover {
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background-color: #e81123;
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}
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#closeButton:pressed {
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background-color: #8c0a15;
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}
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)"));
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}
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void Widget::initBackgroundWindow()
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{
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QWindow *win = windowHandle();
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framelessHelper()->removeWindowFrame(win);
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framelessHelper()->addIgnoreObject(win, windowIconButton);
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framelessHelper()->addIgnoreObject(win, minimizeButton);
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framelessHelper()->addIgnoreObject(win, maximizeButton);
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framelessHelper()->addIgnoreObject(win, closeButton);
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framelessHelper()->setTitleBarHeight(titleBarHeight + framelessHelper()->getBorderHeight());
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//setAttribute(Qt::WA_Hover);
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setAttribute(Qt::WA_NoSystemBackground);
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setAttribute(Qt::WA_TranslucentBackground);
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shadowEffect = new QGraphicsDropShadowEffect(this);
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shadowEffect->setOffset(0, 0);
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contentsWidget->setGraphicsEffect(shadowEffect);
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setFrameShadowEnabled();
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setFrameShadowActive();
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}
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void Widget::setFrameShadowEnabled(const bool enable)
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{
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if (enable) {
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const int bw = framelessHelper()->getBorderWidth();
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const int bh = framelessHelper()->getBorderHeight();
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layout()->setContentsMargins(bw, bh, bw, bh);
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shadowEffect->setEnabled(true);
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} else {
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shadowEffect->setEnabled(false);
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layout()->setContentsMargins(0, 0, 0, 0);
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}
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}
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void Widget::setFrameShadowActive(const bool active)
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{
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if (active) {
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shadowEffect->setColor({0, 0, 0, 80});
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shadowEffect->setBlurRadius(25);
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} else {
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shadowEffect->setColor({0, 0, 0, 60});
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shadowEffect->setBlurRadius(20);
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}
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}
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bool Widget::eventFilter(QObject *object, QEvent *event)
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{
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Q_ASSERT(object);
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Q_ASSERT(event);
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if (object == this) {
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switch (event->type()) {
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case QEvent::WindowStateChange: {
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const bool normal = isNormal();
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contentsWidget->setShouldDrawWindowBorder(normal);
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setFrameShadowEnabled(normal);
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framelessHelper()->setTitleBarHeight(
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titleBarHeight + (normal ? framelessHelper()->getBorderHeight() : 0));
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const QLatin1String maxIconPath = QLatin1String{":/images/button_maximize_black.svg"};
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const QLatin1String restoreIconPath = QLatin1String{
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":/images/button_restore_black.svg"};
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maximizeButton->setIcon(QIcon(normal ? maxIconPath : restoreIconPath));
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} break;
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case QEvent::WindowActivate: {
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if (isNormal()) {
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setFrameShadowActive();
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}
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} break;
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case QEvent::WindowDeactivate: {
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if (isNormal()) {
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setFrameShadowActive(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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return QWidget::eventFilter(object, event);
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}
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@ -0,0 +1,82 @@
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/*
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* MIT License
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*
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* Copyright (C) 2020 by wangwenx190 (Yuhang Zhao)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
|
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* of this software and associated documentation files (the "Software"), to deal
|
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* in the Software without restriction, including without limitation the rights
|
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
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* copies of the Software, and to permit persons to whom the Software is
|
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* furnished to do so, subject to the following conditions:
|
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*
|
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* The above copyright notice and this permission notice shall be included in
|
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* all copies or substantial portions of the Software.
|
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*
|
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#pragma once
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#include <QWidget>
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class QGraphicsDropShadowEffect;
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class QPushButton;
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class QLabel;
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class ContentsWidget : public QWidget
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{
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Q_OBJECT
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Q_DISABLE_COPY_MOVE(ContentsWidget)
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public:
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explicit ContentsWidget(QWidget *parent = nullptr);
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~ContentsWidget() override = default;
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void setShouldDrawWindowBorder(const bool val);
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bool getShouldDrawWindowBorder() const;
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protected:
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void paintEvent(QPaintEvent *event) override;
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private:
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bool m_bShouldDrawWindowBorder = true;
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};
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class Widget : public QWidget
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{
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Q_OBJECT
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Q_DISABLE_COPY_MOVE(Widget)
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public:
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explicit Widget(QWidget *parent = nullptr);
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~Widget() override = default;
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bool isNormal() const;
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protected:
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bool eventFilter(QObject *object, QEvent *event) override;
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private:
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void setupUi();
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void initBackgroundWindow();
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void setFrameShadowEnabled(const bool enable = true);
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void setFrameShadowActive(const bool active = true);
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private:
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int titleBarHeight = 30;
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ContentsWidget *contentsWidget = nullptr;
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QGraphicsDropShadowEffect *shadowEffect = nullptr;
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QWidget *titleBarWidget = nullptr;
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QPushButton *windowIconButton = nullptr;
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QLabel *windowTitleLabel = nullptr;
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QPushButton *minimizeButton = nullptr;
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QPushButton *maximizeButton = nullptr;
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QPushButton *closeButton = nullptr;
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};
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@ -175,12 +175,12 @@ void Widget::setupUi()
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horizontalLayout->setSpacing(0);
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horizontalLayout->setContentsMargins(0, 0, 0, 0);
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horizontalSpacer_7 = new QSpacerItem(3, 20, QSizePolicy::Fixed, QSizePolicy::Minimum);
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horizontalLayout->addItem(horizontalSpacer_7);
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horizontalLayout->addSpacerItem(horizontalSpacer_7);
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iconButton = new QPushButton(titleBarWidget);
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iconButton->setObjectName(QLatin1String("iconButton"));
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horizontalLayout->addWidget(iconButton);
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horizontalSpacer = new QSpacerItem(3, 20, QSizePolicy::Fixed, QSizePolicy::Minimum);
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horizontalLayout->addItem(horizontalSpacer);
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horizontalLayout->addSpacerItem(horizontalSpacer);
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titleLabel = new QLabel(titleBarWidget);
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titleLabel->setObjectName(QLatin1String("titleLabel"));
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QFont font;
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@ -188,7 +188,7 @@ void Widget::setupUi()
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titleLabel->setFont(font);
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horizontalLayout->addWidget(titleLabel);
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horizontalSpacer_2 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
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horizontalLayout->addItem(horizontalSpacer_2);
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horizontalLayout->addSpacerItem(horizontalSpacer_2);
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minimizeButton = new QPushButton(titleBarWidget);
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minimizeButton->setObjectName(QLatin1String("minimizeButton"));
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QSizePolicy sizePolicy1(QSizePolicy::Fixed, QSizePolicy::Fixed);
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@ -235,10 +235,10 @@ void Widget::setupUi()
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contentsWidget->setSizePolicy(sizePolicy2);
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verticalLayout_2 = new QVBoxLayout(contentsWidget);
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verticalSpacer_2 = new QSpacerItem(20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding);
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verticalLayout_2->addItem(verticalSpacer_2);
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verticalLayout_2->addSpacerItem(verticalSpacer_2);
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horizontalLayout_2 = new QHBoxLayout();
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horizontalSpacer_3 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
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horizontalLayout_2->addItem(horizontalSpacer_3);
|
||||
horizontalLayout_2->addSpacerItem(horizontalSpacer_3);
|
||||
controlPanelWidget = new QWidget(contentsWidget);
|
||||
QSizePolicy sizePolicy3(QSizePolicy::Maximum, QSizePolicy::Maximum);
|
||||
sizePolicy3.setHorizontalStretch(0);
|
||||
|
|
@ -275,18 +275,18 @@ void Widget::setupUi()
|
|||
verticalLayout->addWidget(resizableCB);
|
||||
horizontalLayout_2->addWidget(controlPanelWidget);
|
||||
horizontalSpacer_4 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
|
||||
horizontalLayout_2->addItem(horizontalSpacer_4);
|
||||
horizontalLayout_2->addSpacerItem(horizontalSpacer_4);
|
||||
verticalLayout_2->addLayout(horizontalLayout_2);
|
||||
verticalSpacer = new QSpacerItem(20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding);
|
||||
verticalLayout_2->addItem(verticalSpacer);
|
||||
verticalLayout_2->addSpacerItem(verticalSpacer);
|
||||
horizontalLayout_3 = new QHBoxLayout();
|
||||
horizontalSpacer_5 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
|
||||
horizontalLayout_3->addItem(horizontalSpacer_5);
|
||||
horizontalLayout_3->addSpacerItem(horizontalSpacer_5);
|
||||
moveCenterButton = new QPushButton(contentsWidget);
|
||||
moveCenterButton->setFont(font1);
|
||||
horizontalLayout_3->addWidget(moveCenterButton);
|
||||
horizontalSpacer_6 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
|
||||
horizontalLayout_3->addItem(horizontalSpacer_6);
|
||||
horizontalLayout_3->addSpacerItem(horizontalSpacer_6);
|
||||
verticalLayout_2->addLayout(horizontalLayout_3);
|
||||
verticalLayout_3->addWidget(contentsWidget);
|
||||
if (shouldDrawBorder()) {
|
||||
|
|
@ -425,7 +425,7 @@ void Widget::paintEvent(QPaintEvent *event)
|
|||
if (shouldDrawBorder()) {
|
||||
QPainter painter(this);
|
||||
painter.save();
|
||||
painter.setPen({borderColor(), 2.0});
|
||||
painter.setPen({borderColor(), 1.5});
|
||||
painter.drawLine(0, 0, width(), 0);
|
||||
painter.drawLine(0, height(), width(), height());
|
||||
painter.drawLine(0, 0, 0, height());
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
TEMPLATE = subdirs
|
||||
CONFIG -= ordered
|
||||
qtHaveModule(widgets): SUBDIRS += QWidget QMainWindow
|
||||
qtHaveModule(widgets): SUBDIRS += QWidget QWidget2 QMainWindow
|
||||
qtHaveModule(quick): SUBDIRS += Quick
|
||||
win32: qtHaveModule(widgets): SUBDIRS += Win32Demo
|
||||
|
|
|
|||
|
|
@ -217,7 +217,8 @@ void FramelessHelper::setTitleBarEnabled(const QWindow *window, const bool val)
|
|||
void FramelessHelper::removeWindowFrame(QWindow *window, const bool center)
|
||||
{
|
||||
Q_ASSERT(window);
|
||||
window->setFlags(window->flags() | Qt::FramelessWindowHint);
|
||||
window->setFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowSystemMenuHint
|
||||
| Qt::WindowMinMaxButtonsHint | Qt::WindowTitleHint);
|
||||
// MouseTracking is always enabled for QWindow.
|
||||
window->installEventFilter(this);
|
||||
if (center) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue