修正无边框窗体类

framelesswidget/framelesswidget.cpp

@@ -5,6 +5,8 @@
 FramelessWidget::FramelessWidget(QObject *parent) : QObject(parent)
 {
     padding = 8;
+    moveEnable = true;
+    resizeEnable = true;
     widget = 0;
 
     pressed = false;
@@ -79,8 +81,9 @@ bool FramelessWidget::eventFilter(QObject *watched, QEvent *event)
                     pressed = true;
                 }
             } else if (event->type() == QEvent::MouseMove) {
-                //设置对应鼠标形状
+                //设置对应鼠标形状,这个必须放在这里而不是下面,因为可以在鼠标没有按下的时候识别
                 QPoint point = mouseEvent->pos();
+                if (resizeEnable) {
                     if (rectLeft.contains(point)) {
                         widget->setCursor(Qt::SizeHorCursor);
                     } else if (rectRight.contains(point)) {
@@ -100,58 +103,64 @@ bool FramelessWidget::eventFilter(QObject *watched, QEvent *event)
                     } else {
                         widget->setCursor(Qt::ArrowCursor);
                     }
+                }
 
                 //根据当前鼠标位置,计算XY轴移动了多少
-                QPoint pos = mouseEvent->pos();
+                int offsetX = point.x() - lastPos.x();
-                int dx = pos.x() - lastPos.x();
+                int offsetY = point.y() - lastPos.y();
-                int dy = pos.y() - lastPos.y();
 
                 //根据按下处的位置判断是否是移动控件还是拉伸控件
+                if (moveEnable) {
                     if (pressed) {
-                    widget->move(widget->x() + dx, widget->y() + dy);
+                        widget->move(widget->x() + offsetX, widget->y() + offsetY);
-                } else if (pressedLeft) {
+                    }
-                    int resizeW = widget->width() - dx;
+                }
+
+                if (resizeEnable) {
+                    if (pressedLeft) {
+                        int resizeW = widget->width() - offsetX;
                         if (widget->minimumWidth() <= resizeW) {
-                        widget->setGeometry(widget->x() + dx, rectY, resizeW, rectH);
+                            widget->setGeometry(widget->x() + offsetX, rectY, resizeW, rectH);
                         }
                     } else if (pressedRight) {
-                    widget->setGeometry(rectX, rectY, rectW + dx, rectH);
+                        widget->setGeometry(rectX, rectY, rectW + offsetX, rectH);
                     } else if (pressedTop) {
-                    int resizeH = widget->height() - dy;
+                        int resizeH = widget->height() - offsetY;
                         if (widget->minimumHeight() <= resizeH) {
-                        widget->setGeometry(rectX, widget->y() + dy, rectW, resizeH);
+                            widget->setGeometry(rectX, widget->y() + offsetY, rectW, resizeH);
                         }
                     } else if (pressedBottom) {
-                    widget->setGeometry(rectX, rectY, rectW, rectH + dy);
+                        widget->setGeometry(rectX, rectY, rectW, rectH + offsetY);
                     } else if (pressedLeftTop) {
-                    int resizeW = widget->width() - dx;
+                        int resizeW = widget->width() - offsetX;
-                    int resizeH = widget->height() - dy;
+                        int resizeH = widget->height() - offsetY;
                         if (widget->minimumWidth() <= resizeW) {
-                        widget->setGeometry(widget->x() + dx, widget->y(), resizeW, resizeH);
+                            widget->setGeometry(widget->x() + offsetX, widget->y(), resizeW, resizeH);
                         }
                         if (widget->minimumHeight() <= resizeH) {
-                        widget->setGeometry(widget->x(), widget->y() + dy, resizeW, resizeH);
+                            widget->setGeometry(widget->x(), widget->y() + offsetY, resizeW, resizeH);
                         }
                     } else if (pressedRightTop) {
-                    int resizeW = rectW + dx;
+                        int resizeW = rectW + offsetX;
-                    int resizeH = widget->height() - dy;
+                        int resizeH = widget->height() - offsetY;
                         if (widget->minimumHeight() <= resizeH) {
-                        widget->setGeometry(widget->x(), widget->y() + dy, resizeW, resizeH);
+                            widget->setGeometry(widget->x(), widget->y() + offsetY, resizeW, resizeH);
                         }
                     } else if (pressedLeftBottom) {
-                    int resizeW = widget->width() - dx;
+                        int resizeW = widget->width() - offsetX;
-                    int resizeH = rectH + dy;
+                        int resizeH = rectH + offsetY;
                         if (widget->minimumWidth() <= resizeW) {
-                        widget->setGeometry(widget->x() + dx, widget->y(), resizeW, resizeH);
+                            widget->setGeometry(widget->x() + offsetX, widget->y(), resizeW, resizeH);
                         }
                         if (widget->minimumHeight() <= resizeH) {
                             widget->setGeometry(widget->x(), widget->y(), resizeW, resizeH);
                         }
                     } else if (pressedRightBottom) {
-                    int resizeW = rectW + dx;
+                        int resizeW = rectW + offsetX;
-                    int resizeH = rectH + dy;
+                        int resizeH = rectH + offsetY;
                         widget->setGeometry(widget->x(), widget->y(), resizeW, resizeH);
                     }
+                }
             } else if (event->type() == QEvent::MouseButtonRelease) {
                 //恢复所有
                 pressed = false;
@@ -176,6 +185,16 @@ void FramelessWidget::setPadding(int padding)
     this->padding = padding;
 }
 
+void FramelessWidget::setMoveEnable(bool moveEnable)
+{
+    this->moveEnable = moveEnable;
+}
+
+void FramelessWidget::setResizeEnable(bool resizeEnable)
+{
+    this->resizeEnable = resizeEnable;
+}
+
 void FramelessWidget::setWidget(QWidget *widget)
 {
     if (this->widget == 0) {
@@ -185,7 +204,7 @@ void FramelessWidget::setWidget(QWidget *widget)
         //绑定事件过滤器
         this->widget->installEventFilter(this);
         //设置无边框属性
-        this->widget->setWindowFlags(Qt::FramelessWindowHint);
+        this->widget->setWindowFlags(widget->windowFlags() | Qt::FramelessWindowHint);
         //this->widget->setWindowFlags(Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowMinMaxButtonsHint);
     }
 }

framelesswidget/framelesswidget.h

@@ -6,6 +6,8 @@
  * 1:可以指定需要无边框的widget
  * 2:边框四周八个方位都可以自由拉伸
  * 3:可设置对应位置的边距,以便识别更大区域
+ * 4:可设置是否允许拖动
+ * 5:可设置是否允许拉伸
  */
 
 #include <QWidget>
@@ -32,6 +34,8 @@ protected:
 
 private:
     int padding;                    //边距
+    bool moveEnable;                //可移动
+    bool resizeEnable;              //可拉伸
     QWidget *widget;                //无边框窗体
 
     bool pressed;                   //鼠标按下
@@ -59,6 +63,10 @@ private:
 public Q_SLOTS:
     //设置边距
     void setPadding(int padding);
+    //设置是否可拖动+拉伸
+    void setMoveEnable(bool moveEnable);
+    void setResizeEnable(bool resizeEnable);
+
     //设置要无边框的窗体
     void setWidget(QWidget *widget);
 };

framelesswidget/frmframelesswidget.cpp

@@ -3,6 +3,7 @@
 #include "frmframelesswidget.h"
 #include "ui_frmframelesswidget.h"
 #include "qpushbutton.h"
+#include "qcheckbox.h"
 #include "framelesswidget.h"
 
 frmFramelessWidget::frmFramelessWidget(QWidget *parent) : QWidget(parent), ui(new Ui::frmFramelessWidget)
@@ -15,11 +16,18 @@ frmFramelessWidget::~frmFramelessWidget()
     delete ui;
 }
 
+void frmFramelessWidget::closeEvent(QCloseEvent *)
+{
+    exit(0);
+}
+
 void frmFramelessWidget::on_btnOpen_clicked()
 {
     QWidget *w = new QWidget;
     w->setAttribute(Qt::WA_DeleteOnClose);
+    w->setWindowFlags(Qt::WindowStaysOnTopHint);
     w->setWindowTitle("自由拉伸无边框窗体");
+    w->setMinimumSize(200, 120);
     w->resize(480, 320);
 
     //设置下背景颜色区别看
@@ -28,11 +36,33 @@ void frmFramelessWidget::on_btnOpen_clicked()
     w->setPalette(palette);
 
     QPushButton *btn = new QPushButton(w);
-    connect(btn, SIGNAL(clicked(bool)), w, SLOT(close()));
-    btn->setGeometry(10, 10, 100, 25);
     btn->setText("关闭");
+    btn->setGeometry(10, 10, 130, 25);
+    connect(btn, SIGNAL(clicked(bool)), w, SLOT(close()));
 
-    FramelessWidget *f = new FramelessWidget(w);
+    QCheckBox *cboxMove = new QCheckBox(w);
-    f->setWidget(w);
+    cboxMove->setText("可移动");
+    cboxMove->setChecked(true);
+    cboxMove->setGeometry(10, 40, 70, 25);
+    connect(cboxMove, SIGNAL(stateChanged(int)), this, SLOT(stateChanged1(int)));
+
+    QCheckBox *cboxResize = new QCheckBox(w);
+    cboxResize->setText("可拉伸");
+    cboxResize->setChecked(true);
+    cboxResize->setGeometry(80, 40, 70, 25);
+    connect(cboxResize, SIGNAL(stateChanged(int)), this, SLOT(stateChanged2(int)));
+
+    frameless = new FramelessWidget(w);
+    frameless->setWidget(w);
     w->show();
 }
+
+void frmFramelessWidget::stateChanged1(int arg1)
+{
+    frameless->setMoveEnable(arg1 != 0);
+}
+
+void frmFramelessWidget::stateChanged2(int arg1)
+{
+    frameless->setResizeEnable(arg1 != 0);
+}

framelesswidget/frmframelesswidget.h

@@ -2,6 +2,7 @@
 #define FRMFRAMELESSWIDGET_H
 
 #include <QWidget>
+class FramelessWidget;
 
 namespace Ui
 {
@@ -16,11 +17,17 @@ public:
     explicit frmFramelessWidget(QWidget *parent = 0);
     ~frmFramelessWidget();
 
+protected:
+    void closeEvent(QCloseEvent *);
+
 private:
     Ui::frmFramelessWidget *ui;
+    FramelessWidget *frameless;
 
 private slots:
     void on_btnOpen_clicked();
+    void stateChanged1(int arg1);
+    void stateChanged2(int arg1);
 };
 
 #endif // FRMFRAMELESSWIDGET_H

framelesswidget/frmframelesswidget.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>500</width>
+    <width>600</width>
-    <height>300</height>
+    <height>480</height>
    </rect>
   </property>
   <property name="windowTitle">