feat: add DWindowGroupLeader

Change-Id: I9bf91ada334038107123655b36576132e18eb33f

src/widgets/DWindowGroupLeader

@@ -0,0 +1 @@
+#include "dwindowgroupleader.h"

src/widgets/dwindowgroupleader.cpp

@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
+ *
+ * Author:     zccrs <zccrs@live.com>
+ *
+ * Maintainer: zccrs <zhangjide@deepin.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "dwindowgroupleader.h"
+
+#include <QWidget>
+#include <QWindow>
+#include <QGuiApplication>
+#include <QPointer>
+
+DWIDGET_BEGIN_NAMESPACE
+
+#define DEFINE_CONST_CHAR(Name) const char _##Name[] = "_d_" #Name
+
+DEFINE_CONST_CHAR(groupLeader);
+DEFINE_CONST_CHAR(createGroupWindow);
+DEFINE_CONST_CHAR(destoryGroupWindow);
+DEFINE_CONST_CHAR(setWindowGroup);
+DEFINE_CONST_CHAR(clientLeader);
+
+class DWindowGroupLeaderPrivate
+{
+public:
+    DWindowGroupLeaderPrivate(quint32 groupLeader)
+        : groupLeader(groupLeader) {
+        QFunctionPointer clientLeaderFun = qApp->platformFunction(_clientLeader);
+
+        if (clientLeaderFun) {
+            clientLeader = reinterpret_cast<quint32(*)()>(clientLeaderFun)();
+        }
+    }
+
+    quint32 groupLeader;
+    quint32 clientLeader = 0;
+    bool groupLeaderFromUser = false;
+
+    QList<QPointer<QWindow>> windowList;
+
+    void ensureGroupLeader();
+    bool setWindowGroupLeader(quint32 window, quint32 groupLeader);
+};
+
+void DWindowGroupLeaderPrivate::ensureGroupLeader()
+{
+    if (groupLeader != 0)
+        return;
+
+    QFunctionPointer createGroupWindow = qApp->platformFunction(_createGroupWindow);
+
+    if (!createGroupWindow)
+        return;
+
+    groupLeader = reinterpret_cast<quint32(*)()>(createGroupWindow)();
+}
+
+bool DWindowGroupLeaderPrivate::setWindowGroupLeader(quint32 window, quint32 groupLeader)
+{
+    QFunctionPointer setWindowGroup = qApp->platformFunction(_setWindowGroup);
+
+    if (!setWindowGroup) {
+        return false;
+    }
+
+    reinterpret_cast<void(*)(quint32, quint32)>(setWindowGroup)(window, groupLeader);
+
+    return true;
+}
+
+DWindowGroupLeader::DWindowGroupLeader(quint32 groupId)
+    : d_ptr(new DWindowGroupLeaderPrivate(groupId))
+{
+    if (groupId != 0)
+        d_ptr->groupLeaderFromUser = true;
+}
+
+DWindowGroupLeader::~DWindowGroupLeader()
+{
+    Q_D(DWindowGroupLeader);
+
+    for (auto window : d->windowList)
+        removeWindow(window);
+
+    if (!d->groupLeaderFromUser) {
+        QFunctionPointer destoryGroupWindow = qApp->platformFunction(_destoryGroupWindow);
+
+        if (!destoryGroupWindow)
+            return;
+
+        reinterpret_cast<void(*)(quint32)>(destoryGroupWindow)(d->groupLeader);
+    }
+}
+
+void DWindowGroupLeader::addWindow(QWindow *window)
+{
+    Q_ASSERT(window);
+    Q_D(DWindowGroupLeader);
+
+    d->ensureGroupLeader();
+
+    window->setProperty(_groupLeader, d->groupLeader);
+
+    if (window->handle()) {
+        d->setWindowGroupLeader(window->winId(), d->groupLeader);
+    }
+
+    d->windowList << window;
+}
+
+void DWindowGroupLeader::removeWindow(QWindow *window)
+{
+    if (!window)
+        return;
+
+    window->setProperty(_groupLeader, QVariant());
+
+    Q_D(DWindowGroupLeader);
+
+    if (window->handle()) {
+        d->setWindowGroupLeader(window->winId(), d->clientLeader);
+    }
+}
+
+void DWindowGroupLeader::addWindow(QWidget *window)
+{
+    Q_ASSERT(window);
+    Q_ASSERT(window->isWindow());
+
+    if (!window->windowHandle()) {
+        window->setAttribute(Qt::WA_NativeWindow);
+    }
+
+    return addWindow(window->windowHandle());
+}
+
+void DWindowGroupLeader::removeWindow(QWidget *window)
+{
+    return removeWindow(window->windowHandle());
+}
+
+DWIDGET_END_NAMESPACE

src/widgets/dwindowgroupleader.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
+ *
+ * Author:     zccrs <zccrs@live.com>
+ *
+ * Maintainer: zccrs <zhangjide@deepin.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef DWINDOWGROUPLEADER_H
+#define DWINDOWGROUPLEADER_H
+
+#include <dtkwidget_global.h>
+
+QT_BEGIN_NAMESPACE
+class QWindow;
+QT_END_NAMESPACE
+
+DWIDGET_BEGIN_NAMESPACE
+
+class DWindowGroupLeaderPrivate;
+class DWindowGroupLeader
+{
+public:
+    explicit DWindowGroupLeader(quint32 groupId = 0);
+    ~DWindowGroupLeader();
+
+    void addWindow(QWindow *window);
+    void removeWindow(QWindow *window);
+    void addWindow(QWidget *window);
+    void removeWindow(QWidget *window);
+
+private:
+    QScopedPointer<DWindowGroupLeaderPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(DWindowGroupLeader)
+};
+
+DWIDGET_END_NAMESPACE
+
+#endif // DWINDOWGROUPLEADER_H

src/widgets/widgets.pri

@@ -123,7 +123,8 @@ HEADERS += $$PWD/dslider.h\
     $$PWD/dsuggestbutton.h \
     $$PWD/dstyleoption.h \
     $$PWD/dtoast.h \
-    $$PWD/danchors.h
+    $$PWD/danchors.h \
+    $$PWD/dwindowgroupleader.h
 
 SOURCES += $$PWD/dslider.cpp \
     $$PWD/dthememanager.cpp \
@@ -203,7 +204,8 @@ SOURCES += $$PWD/dslider.cpp \
     $$PWD/dsuggestbutton.cpp \
     $$PWD/dstyleoption.cpp \
     $$PWD/dtoast.cpp \
-    $$PWD/danchors.cpp
+    $$PWD/danchors.cpp \
+    $$PWD/dwindowgroupleader.cpp
 
 RESOURCES += \
     $$PWD/themes/dui_theme_dark.qrc \
@@ -244,6 +246,7 @@ includes.files += \
     $$PWD/DToast \
     $$PWD/DFileDialog \
     $$PWD/DLineEdit \
-    $$PWD/DStyleOptionLineEdit
+    $$PWD/DStyleOptionLineEdit \
+    $$PWD/DWindowGroupLeader