更新代码

ui/core_base/appinit.cpp

@@ -0,0 +1,56 @@
+#include "appinit.h"
+#include "qmutex.h"
+#include "qapplication.h"
+#include "qevent.h"
+#include "qwidget.h"
+
+QScopedPointer<AppInit> AppInit::self;
+AppInit *AppInit::Instance()
+{
+    if (self.isNull()) {
+        static QMutex mutex;
+        QMutexLocker locker(&mutex);
+        if (self.isNull()) {
+            self.reset(new AppInit);
+        }
+    }
+
+    return self.data();
+}
+
+AppInit::AppInit(QObject *parent) : QObject(parent)
+{
+}
+
+bool AppInit::eventFilter(QObject *watched, QEvent *event)
+{
+    QWidget *w = (QWidget *)watched;
+    if (!w->property("canMove").toBool()) {
+        return QObject::eventFilter(watched, event);
+    }
+
+    static QPoint mousePoint;
+    static bool mousePressed = false;
+
+    QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
+    if (mouseEvent->type() == QEvent::MouseButtonPress) {
+        if (mouseEvent->button() == Qt::LeftButton) {
+            mousePressed = true;
+            mousePoint = mouseEvent->globalPos() - w->pos();
+        }
+    } else if (mouseEvent->type() == QEvent::MouseButtonRelease) {
+        mousePressed = false;
+    } else if (mouseEvent->type() == QEvent::MouseMove) {
+        if (mousePressed) {
+            w->move(mouseEvent->globalPos() - mousePoint);
+            return true;
+        }
+    }
+
+    return QObject::eventFilter(watched, event);
+}
+
+void AppInit::start()
+{
+    qApp->installEventFilter(this);
+}