implement onMouseDoubleClick event in UIWidget

src/framework/core/timer.cpp

@@ -27,6 +27,7 @@
 void Timer::restart()
 {
     m_startTicks = g_clock.ticks();
+    m_stopped = false;
 }
 
 ticks_t Timer::ticksElapsed()

src/framework/core/timer.h

@@ -31,13 +31,17 @@ public:
     Timer() { restart(); }
 
     void restart();
+    void stop() { m_stopped = true; }
 
     ticks_t startTicks() { return m_startTicks; }
     ticks_t ticksElapsed();
     double timeElapsed() { return ticksElapsed()/1000.0; }
 
+    bool running() { return !m_stopped; }
+
 private:
     ticks_t m_startTicks;
+    Boolean<false> m_stopped;
 };
 
 #endif

src/framework/ui/uiwidget.cpp

@@ -35,6 +35,7 @@ UIWidget::UIWidget()
 {
     m_lastFocusReason = Fw::ActiveFocusReason;
     m_states = Fw::DefaultState;
+    m_clickTimer.stop();
 
     initBaseStyle();
     initText();
@@ -1111,6 +1112,14 @@ bool UIWidget::onKeyUp(uchar keyCode, int keyboardModifiers)
 
 bool UIWidget::onMousePress(const Point& mousePos, Fw::MouseButton button)
 {
+    if(button == Fw::MouseLeftButton) {
+        if(m_clickTimer.running() && m_clickTimer.ticksElapsed() <= 500) {
+            if(onMouseDoubleClick(mousePos))
+                return true;
+            m_clickTimer.stop();
+        } else
+            m_clickTimer.restart();
+    }
     return callLuaField<bool>("onMousePress", mousePos, button);
 }
 
@@ -1145,6 +1154,11 @@ bool UIWidget::onMouseWheel(const Point& mousePos, Fw::MouseWheelDirection direc
     return callLuaField<bool>("onMouseWheel", mousePos, direction);
 }
 
+bool UIWidget::onMouseDoubleClick(const Point& mousePos)
+{
+    return callLuaField<bool>("onMouseDoubleClick", mousePos);
+}
+
 bool UIWidget::propagateOnKeyText(const std::string& keyText)
 {
     // do a backup of children list, because it may change while looping it

src/framework/ui/uiwidget.h

@@ -29,6 +29,7 @@
 #include <framework/otml/otmlnode.h>
 #include <framework/graphics/font.h>
 #include <framework/graphics/coordsbuffer.h>
+#include <framework/core/timer.h>
 
 template<typename T = int>
 struct EdgeGroup {
@@ -71,6 +72,7 @@ protected:
     UIWidgetList m_lockedChildren;
     UIWidgetPtr m_focusedChild;
     OTMLNodePtr m_style;
+    Timer m_clickTimer;
     Fw::FocusReason m_lastFocusReason;
 
 public:
@@ -176,6 +178,7 @@ protected:
     virtual bool onMouseRelease(const Point& mousePos, Fw::MouseButton button);
     virtual bool onMouseMove(const Point& mousePos, const Point& mouseMoved);
     virtual bool onMouseWheel(const Point& mousePos, Fw::MouseWheelDirection direction);
+    virtual bool onMouseDoubleClick(const Point& mousePos);
 
     bool propagateOnKeyText(const std::string& keyText);
     bool propagateOnKeyDown(uchar keyCode, int keyboardModifiers);