新增控件

framelesswidget/framelesswidget.h

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+#ifndef FRAMELESSWIDGET_H
+#define FRAMELESSWIDGET_H
+
+/**
+ * 无边框窗体类 作者:feiyangqingyun(QQ:517216493) 2019-10-03
+ * 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
+ */
+
+#include <QWidget>
+
+#ifdef quc
+#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
+#include <QtDesigner/QDesignerExportWidget>
+#else
+#include <QtUiPlugin/QDesignerExportWidget>
+#endif
+
+class QDESIGNER_WIDGET_EXPORT FramelessWidget : public QObject
+#else
+class FramelessWidget : public QObject
+#endif
+
+{
+    Q_OBJECT
+public:
+    explicit FramelessWidget(QObject *parent = 0);
+
+protected:
+    bool eventFilter(QObject *watched, QEvent *event);
+
+private:
+    int padding;                    //边距
+    QWidget *widget;                //无边框窗体
+
+    bool pressed;                   //鼠标按下
+    bool pressedLeft;               //鼠标按下左侧
+    bool pressedRight;              //鼠标按下右侧
+    bool pressedTop;                //鼠标按下上侧
+    bool pressedBottom;             //鼠标按下下侧
+    bool pressedLeftTop;            //鼠标按下左上侧
+    bool pressedRightTop;           //鼠标按下右上侧
+    bool pressedLeftBottom;         //鼠标按下左下侧
+    bool pressedRightBottom;        //鼠标按下右下侧
+
+    int rectX, rectY, rectW, rectH; //窗体坐标+宽高
+    QPoint lastPos;                 //鼠标按下处坐标
+
+    QRectF rectLeft;                //左侧区域
+    QRectF rectRight;               //右侧区域
+    QRectF rectTop;                 //上侧区域
+    QRectF rectBottom;              //下侧区域
+    QRectF rectLeftTop;             //左上侧区域
+    QRectF rectRightTop;            //右上侧区域
+    QRectF rectLeftBottom;          //左下侧区域
+    QRectF rectRightBottom;         //右下侧区域
+
+public Q_SLOTS:
+    //设置边距
+    void setPadding(int padding);
+    //设置要无边框的窗体
+    void setWidget(QWidget *widget);
+};
+
+#endif // FRAMELESSWIDGET_H