Fix hover state of Button

qgroundcontrol.pro

@@ -270,7 +270,8 @@ INCLUDEPATH += \
     src/ui/main \
     src/ui/toolbar \
     src/VehicleSetup \
-    src/AutoPilotPlugins
+    src/AutoPilotPlugins \
+    src/QmlControls
 
 FORMS += \
     src/ui/MainWindow.ui \
@@ -495,7 +496,8 @@ HEADERS += \
     src/ui/QGCCommConfiguration.h \
     src/ui/QGCUDPLinkConfiguration.h \
     src/uas/UASMessageHandler.h \
-    src/ui/toolbar/MainToolBar.h
+    src/ui/toolbar/MainToolBar.h \
+    src/QmlControls/MousePosition.h
 
 SOURCES += \
     src/main.cc \
@@ -636,7 +638,8 @@ SOURCES += \
     src/ui/QGCCommConfiguration.cc \
     src/ui/QGCUDPLinkConfiguration.cc \
     src/uas/UASMessageHandler.cc \
-    src/ui/toolbar/MainToolBar.cc
+    src/ui/toolbar/MainToolBar.cc \
+    src/QmlControls/MousePosition.cc
 
 #
 # Unit Test specific configuration goes here

src/QGCApplication.cc

@@ -59,6 +59,7 @@
 #include "QGCTemporaryFile.h"
 #include "QGCFileDialog.h"
 #include "QGCPalette.h"
+#include "MousePosition.h"
 
 #ifdef QGC_RTLAB_ENABLED
 #include "OpalLink.h"
@@ -249,8 +250,9 @@ void QGCApplication::_initCommon(void)
     //     "Warning: Do not use this function in conjunction with Qt Style Sheets."
     // setFont(fontDatabase.font(fontFamilyName, "Roman", 12));
     
-    // Register our Qml palette before anyone tries to use it
+    // Register our Qml objects
     qmlRegisterType<QGCPalette>("QGroundControl.Palette", 1, 0, "QGCPalette");
+    qmlRegisterType<MousePosition>("QGroundControl.MousePosition", 1, 0, "MousePosition");
 }
 
 bool QGCApplication::_initForNormalAppBoot(void)

src/QmlControls/MousePosition.cc

@@ -0,0 +1,32 @@
+/*=====================================================================
+ 
+ QGroundControl Open Source Ground Control Station
+ 
+ (c) 2009, 2015 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ 
+ This file is part of the QGROUNDCONTROL project
+ 
+ QGROUNDCONTROL is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ 
+ QGROUNDCONTROL is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
+ 
+ ======================================================================*/
+
+/// @file
+///     @author Don Gagne <don@thegagnes.com>
+
+#include "MousePosition.h"
+
+MousePosition::MousePosition(void)
+{
+
+}

src/QmlControls/MousePosition.h

@@ -0,0 +1,50 @@
+/*=====================================================================
+ 
+ QGroundControl Open Source Ground Control Station
+ 
+ (c) 2009, 2015 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
+ 
+ This file is part of the QGROUNDCONTROL project
+ 
+ QGROUNDCONTROL is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ 
+ QGROUNDCONTROL is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
+ 
+ ======================================================================*/
+
+/// @file
+///     @author Don Gagne <don@thegagnes.com>
+
+#ifndef MOUSEPOSITION_H
+#define MOUSEPOSITION_H
+
+#include <QObject>
+#include <QCursor>
+
+/// This Qml control is used to return global mouse positions. It is needed to fix
+/// a problem with hover state of buttons not being updated correctly if the mouse
+/// moves out of a QQuickWidget control.
+class MousePosition : public QObject
+{
+    Q_OBJECT
+    
+public:
+    MousePosition(void);
+    
+    Q_PROPERTY(int mouseX READ mouseX)
+    Q_PROPERTY(int mouseY READ mouseY)
+    
+    int mouseX(void) { return QCursor::pos().x(); }
+    int mouseY(void) { return QCursor::pos().y(); }
+};
+
+#endif

src/QmlControls/QGCButton.qml

@@ -4,6 +4,7 @@ import QtQuick.Controls.Styles 1.2
 import QtQuick.Controls.Private 1.0
 
 import QGroundControl.Palette 1.0
+import QGroundControl.MousePosition 1.0
 
 Button {
     // primary: true - this is the primary button for this group of buttons
@@ -11,32 +12,50 @@ Button {
 
     property var __qgcPal: QGCPalette { colorGroupEnabled: enabled }
 
-    property bool __showHighlight: pressed | hovered | checked
+    property bool __showHighlight: (pressed | hovered | checked) && !__forceHoverOff
 
-    style: ButtonStyle {
-/*
-            background: Rectangle {
-                implicitWidth: 100
-                implicitHeight: 25
-                color: __showHighlight ?
-                    control.__qgcPal.buttonHighlight :
-                    (primary ? control.__qgcPal.primaryButton : control.__qgcPal.button)
-            }
+    // This fixes the issue with button hover where if a Button is near the edge oa QQuickWidget you can
+    // move the mouse fast enough such that the MouseArea does not trigger an onExited. This is turn
+    // cause the hover property to not be cleared correctly.
 
-            label: Text {
-                width: parent.width
-                height: parent.height
+    property bool __forceHoverOff: false
 
-                verticalAlignment: TextEdit.AlignVCenter
-                horizontalAlignment: TextEdit.AlignHCenter
+    property int __lastMouseX:  __behavior.mouseX
+    property int __lastMouseY:  __behavior.mouseY
+    property int __lastCursorX: 0
+    property int __lastCursorY: 0
 
-                text: control.text
-                color: __showHighlight ?
-                    control.__qgcPal.buttonHighlightText :
-                    (primary ? control.__qgcPal.primaryButtonText : control.__qgcPal.buttonText)
+    property MousePosition __mousePosition: MousePosition { }
+
+    Connections {
+        target: __behavior
+        onMouseXChanged: {
+            __lastCursorX = __mousePosition.mouseX
+            __lastCursorY = __mousePosition.mouseY
+        }
+        onMouseYChanged: {
+            __lastCursorX = __mousePosition.mouseX
+            __lastCursorY = __mousePosition.mouseY
+        }
+        onEntered: { __forceHoverOff; false; hoverTimer.start() }
+        onExited: { __forceHoverOff; false; hoverTimer.stop() }
+    }
+
+    Timer {
+        id:         hoverTimer
+        interval:   250
+        repeat:     true
+
+        onTriggered: {
+            if (__lastCursorX != __mousePosition.mouseX || __lastCursorY != __mousePosition.mouseY) {
+                __forceHoverOff = true
+            } else {
+                __forceHoverOff = false
             }
-*/
+        }
+    }
 
+    style: ButtonStyle {
             /*! The padding between the background and the label components. */
             padding {
                 top: 4