增加子窗口移动器。

src/exquisite/qqtbodymover.h

@@ -23,6 +23,9 @@
  * 在鼠标move的时候，截获鼠标消息，使窗口移动。
  * 支持所有QWidget及其子类，不支持QMainWindow。
  * 支持windows、macOS、Linux、e-linux等操作系统。
+ *
+ * 无论应用于主窗口、子窗口都会导致窗口整体移动，
+ * 在Windows、macOS、Linux等系统下表现一致。
  */
 class QQtBodyMoverPrivate;
 class QQTSHARED_EXPORT QQtBodyMover : public QObject

src/exquisite/qqtbodymover_p.h

@@ -16,7 +16,7 @@ public:
     QMargins& margins();
     const QMargins& margins() const;
 
-public:
+protected:
     virtual void mousePressEvent ( QMouseEvent* event, QWidget* target = 0 );
     virtual void mouseReleaseEvent ( QMouseEvent* event, QWidget* target = 0 );
     virtual void mouseMoveEvent ( QMouseEvent* event, QWidget* target = 0 );

src/exquisite/qqtbodyresizer_p.h

@@ -28,7 +28,7 @@ public:
     QMargins& margins();
     const QMargins& margins() const;
 
-public:
+protected:
     virtual void mousePressEvent ( QMouseEvent* event, QWidget* target = 0 );
     virtual void mouseReleaseEvent ( QMouseEvent* event, QWidget* target = 0 );
     virtual void mouseMoveEvent ( QMouseEvent* event, QWidget* target = 0 );

src/exquisite/qqtchildbodymover.cpp

@@ -0,0 +1,119 @@
+#include <qqtchildbodymover.h>
+
+QQtChildBodyMover::QQtChildBodyMover ( QObject* parent ) : QObject ( parent )
+{
+    bMousePressed = false;
+    m_margins = QMargins ( 10, 10, 10, 10 );
+
+}
+
+QQtChildBodyMover::~QQtChildBodyMover() {}
+
+QMargins& QQtChildBodyMover::margins()
+{
+    return m_margins;
+}
+
+void QQtChildBodyMover::mousePressEvent ( QMouseEvent* event, QWidget* target )
+{
+    Q_ASSERT ( target );
+
+    //以下代码用来过滤边缘的margin。
+#if 1
+    //maptoGlobal(rect()) 与 globalPos 对比
+    QRect rectMustIn = QRect ( target->mapToGlobal ( target->rect().topLeft() ), target->mapToGlobal ( target->rect().bottomRight() ) );
+#if QT_VERSION < QT_VERSION_CHECK(5,0,0)
+    QRect rectMustNotIn = rectMustIn.adjusted ( m_margins.left(), m_margins.top(), m_margins.right(), m_margins.bottom() );
+#else
+    QRect rectMustNotIn = rectMustIn.marginsRemoved ( m_margins );
+#endif
+    QPoint cursorPos = event->globalPos();
+    //经过测试，这种方法，在子窗口、root窗口，得到的数据完全正常。
+    //pline() << target->geometry() << rectMustIn
+    //        << rectMustIn.contains ( event->globalPos() ) << rectMustNotIn.contains ( event->globalPos() );
+#endif
+
+    if ( target->isMaximized() ||
+         !target->isActiveWindow() ||
+         !rectMustIn.contains ( cursorPos ) ||
+         !rectMustNotIn.contains ( cursorPos ) )
+    {
+        event->ignore();
+        return;
+    }
+
+    if ( event->button() == Qt::LeftButton )
+    {
+        bMousePressed = true;
+        pressedPoint = event->globalPos();
+    }
+    event->accept();
+}
+
+void QQtChildBodyMover::mouseReleaseEvent ( QMouseEvent* event, QWidget* target )
+{
+    bMousePressed = false;
+    event->accept();
+}
+
+void QQtChildBodyMover::mouseMoveEvent ( QMouseEvent* event, QWidget* target )
+{
+    Q_ASSERT ( target );
+
+    QWidget* win = target->window();
+    if ( bMousePressed && !win->isMaximized() )
+    {
+        QPoint p1 = event->globalPos();
+        QPoint pxy = p1 - pressedPoint;
+        pressedPoint = p1;
+
+        QPoint p0 = target->geometry().topLeft();
+        QPoint p2 = p0 + pxy;
+        target->move ( p2 );
+    }
+    event->accept();
+}
+
+
+bool QQtChildBodyMover::eventFilter ( QObject* watched, QEvent* event )
+{
+    //过滤掉不是QWidget
+    if ( !watched->inherits ( "QWidget" ) )
+        return QObject::eventFilter ( watched, event );
+
+    //修复 paint bug
+    /*fix the parent handled bug terminally*/
+    if ( event->type() == QEvent::Paint )
+        return QObject::eventFilter ( watched, event );
+
+    //修复鼠标穿透。
+    bool atti = ( qobject_cast<QWidget*> ( watched ) )->testAttribute ( Qt::WA_TransparentForMouseEvents );
+    if ( atti )
+        return QObject::eventFilter ( watched, event );
+
+    switch ( event->type() )
+    {
+        case QEvent::MouseButtonPress:
+        {
+            QMouseEvent* e = ( QMouseEvent* ) event;
+            mousePressEvent ( e, qobject_cast<QWidget*> ( watched ) );
+            return false;
+        }
+        case QEvent::MouseButtonRelease:
+        {
+            QMouseEvent* e = ( QMouseEvent* ) event;
+            mouseReleaseEvent ( e, qobject_cast<QWidget*> ( watched ) );
+            return false;
+        }
+        case QEvent::MouseMove:
+        {
+            QMouseEvent* e = ( QMouseEvent* ) event;
+            mouseMoveEvent ( e, qobject_cast<QWidget*> ( watched ) );
+            return false;
+        }
+        default:
+            break;
+    }
+
+    return QObject::eventFilter ( watched, event );
+}

src/exquisite/qqtchildbodymover.h

@@ -0,0 +1,45 @@
+#ifndef QQTCHILDBODYMOVER_H
+#define QQTCHILDBODYMOVER_H
+
+#include <QObject>
+#include <QMargins>
+#include <QMouseEvent>
+#include <QWidget>
+
+#include <qqt-local.h>
+
+/**
+ * @brief The QQtChildBodyMover class
+ * 摁住子窗体就能在父窗体里移动
+ *
+ * 允许使用这一个句柄为多个窗口安装，各自独立工作，互不干扰。
+ * 只能应用于子窗口
+ * 在Windows、macOS、Linux等系统下表现一致。
+ */
+class QQTSHARED_EXPORT QQtChildBodyMover : public QObject
+{
+    Q_OBJECT
+public:
+    QQtChildBodyMover ( QObject* parent = 0 );
+    virtual ~QQtChildBodyMover();
+
+    QMargins& margins();
+
+protected:
+    virtual void mousePressEvent ( QMouseEvent* event, QWidget* target = 0 );
+    virtual void mouseReleaseEvent ( QMouseEvent* event, QWidget* target = 0 );
+    virtual void mouseMoveEvent ( QMouseEvent* event, QWidget* target = 0 );
+
+    // QObject interface
+public:
+    virtual bool eventFilter ( QObject* watched, QEvent* event ) override;
+
+private:
+    bool bMousePressed;
+    QPoint pressedPoint;
+
+    QMargins m_margins;
+};
+
+
+#endif // QQTCHILDBODYMOVER_H

src/qqt_source.pri

@@ -343,7 +343,7 @@ contains (DEFINES, __NETWORKSUPPORT__) {
 
 contains (DEFINES, __EXQUISITE__) {
     #exquisite
-    #窗体移动
+    #窗体整体移动 对父、子窗体均可使用，跨平台特征好
     HEADERS += \
         $$PWD/exquisite/qqtbodymover.h \
         $$PWD/exquisite/qqtbodymover_p.h
@@ -351,7 +351,7 @@ contains (DEFINES, __EXQUISITE__) {
         $$PWD/exquisite/qqtbodymover.cpp \
         $$PWD/exquisite/qqtbodymover_p.cpp
 
-    #窗体大小。一般用于无边框窗体
+    #窗体大小。一般用于无边框窗体。父、子窗体均可使用
     HEADERS += \
         $$PWD/exquisite/qqtbodyresizer.h \
         $$PWD/exquisite/qqtbodyresizer_p.h
@@ -359,6 +359,14 @@ contains (DEFINES, __EXQUISITE__) {
         $$PWD/exquisite/qqtbodyresizer.cpp \
         $$PWD/exquisite/qqtbodyresizer_p.cpp
 
+    #子窗体在父窗体里移动 只应用于子窗体，不能应用于主窗体
+    add_file($$PWD/exquisite/qqtchildbodymover.h)
+    add_file($$PWD/exquisite/qqtchildbodymover.cpp)
+    HEADERS += \
+        $$PWD/exquisite/qqtchildbodymover.h
+    SOURCES += \
+        $$PWD/exquisite/qqtchildbodymover.cpp
+
     #不规则形状的控件
     contains (DEFINES, __IRREGULARWIDGETS__) {
         SOURCES += \