Fixed QT double event issue

xtt/lib/cow/qt/cow_qt_helpers.cpp

@@ -77,9 +77,16 @@ void dbg_print(const char *file, int line, const char *fmt, ...)
   }
 }
 
-void dbg_print(QString str)
+void dbg_print(const char *file, int line, QString str)
 {
   if (DEBUG) {
+    // 1. print timestamp
+    print_time(stderr);
+    // 2. print filename only, without path
+    const char *file2 = strrchr(file, '/');
+    file2 = file2 ? (file2 + 1) : file;
+    fprintf(stderr, " %s:%d: ", file2, line);
+    // 3. print the actual debug message
     QByteArray ba = str.toLocal8Bit();
     const char *c_str = ba.data();
     fprintf(stderr, "%s\n", c_str);

xtt/lib/cow/qt/cow_qt_helpers.h

@@ -50,11 +50,14 @@ void print_time(FILE *stream, int fulldate = 0);
 
 void dbg_print(const char *file, int line, const char *fmt, ...);
 
-void dbg_print(QString str);
+void dbg_print(const char *file, int line, QString str);
 
 #define debug_print(fmt, args...) \
     do { if (DEBUG) { dbg_print(__FILE__, __LINE__, fmt, ##args); } } while (0)
 
+#define debug_print2(qstr) \
+    do { if (DEBUG) { dbg_print(__FILE__, __LINE__, qstr); } } while (0)
+
 /*
  * Qt Helper functions
  */

xtt/lib/flow/qt/flow_scroll_widget_qt.cqt

@@ -93,7 +93,11 @@ QWidget *QtScrollWidgetFlow::initScroll(
 bool QScrollAreaFlow::event(QEvent *event)
 {
   QtScrollWidgetFlow *child = ((QtScrollWidgetFlow *) widget());
-  child->handleEvent(event);
+  time_t t;
+  time(&t);
+  if (event->type() != child->lastEvent->type() || difftime(t, child->t) > 0.000001) {
+    child->handleEvent(event);
+  }
   return QScrollArea::event(event);
 }
 
@@ -263,6 +267,8 @@ bool QtScrollWidgetFlow::event(QEvent *event)
     is_realized = true;
   }
   handleEvent(event);
+  lastEvent = event;
+  time(&t);
   return QWidget::event(event);
 }
 

xtt/lib/flow/qt/flow_scroll_widget_qt.h

@@ -105,6 +105,9 @@ public:
 
   QImage image;
 
+  QEvent *lastEvent;
+  time_t t;
+
   virtual void handleEvent(QEvent *event);
 
 protected:

xtt/lib/glow/qt/glow_scroll_widget_qt.cqt

@@ -93,7 +93,11 @@ QWidget *QtScrollWidgetGlow::initScroll(
 bool QScrollAreaGlow::event(QEvent *event)
 {
   QtScrollWidgetGlow *child = ((QtScrollWidgetGlow *) widget());
-  child->handleEvent(event);
+  time_t t;
+  time(&t);
+  if (event->type() != child->lastEvent->type() || difftime(t, child->t) > 0.000001) {
+    child->handleEvent(event);
+  }
   return QScrollArea::event(event);
 }
 
@@ -263,6 +267,8 @@ bool QtScrollWidgetGlow::event(QEvent *event)
     is_realized = true;
   }
   handleEvent(event);
+  lastEvent = event;
+  time(&t);
   return QWidget::event(event);
 }
 

xtt/lib/glow/qt/glow_scroll_widget_qt.h

@@ -105,6 +105,9 @@ public:
 
   QImage image;
 
+  QEvent *lastEvent;
+  time_t t;
+
   virtual void handleEvent(QEvent *event);
 
 protected: