Add a color filter property to QCameraImageProcessing.

[ChangeLog] New color filter property for QCameraImageProcessing.

Change-Id: I999e349e3e4f284b533fa62ba50903fbd21cb400
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

src/imports/multimedia/multimedia.cpp

@@ -103,6 +103,9 @@ public:
         qmlRegisterUncreatableType<QDeclarativeCameraViewfinder>(uri, 5, 4, "CameraViewfinder",
                                 trUtf8("CameraViewfinder is provided by Camera"));
 
+        // 5.5 types
+        qmlRegisterUncreatableType<QDeclarativeCameraImageProcessing, 1>(uri, 5, 5, "CameraImageProcessing", trUtf8("CameraImageProcessing is provided by Camera"));
+
         qmlRegisterType<QDeclarativeMediaMetaData>();
     }
 

src/imports/multimedia/qdeclarativecameraimageprocessing.cpp

@@ -219,6 +219,42 @@ void QDeclarativeCameraImageProcessing::setDenoisingLevel(qreal value)
     }
 }
 
+/*!
+    \qmlproperty QtMultimedia::CameraImageProcessing::colorFilter
+
+    This property holds which color filter if any will be applied to image data captured by the camera.
+
+    It can be one of:
+
+    \table
+    \row \li CameraImageProcessing.ColorFilterNone       \li No filter is applied to images.
+    \row \li CameraImageProcessing.ColorFilterGrayscale  \li A grayscale filter.
+    \row \li CameraImageProcessing.ColorFilterNegative   \li A negative filter.
+    \row \li CameraImageProcessing.ColorFilterSolarize   \li A solarize filter.
+    \row \li CameraImageProcessing.ColorFilterSepia      \li A sepia filter.
+    \row \li CameraImageProcessing.ColorFilterPosterize  \li A posterize filter.
+    \row \li CameraImageProcessing.ColorFilterWhiteboard \li A whiteboard filter.
+    \row \li CameraImageProcessing.ColorFilterBlackboard \li A blackboard filter.
+    \row \li CameraImageProcessing.ColorFilterAqua       \li An aqua filter.
+    \row \li CameraImageProcessing.ColorFilterVendor     \li The base value for vendor defined filters.
+    \endtable
+
+    \since 5.5
+*/
+
+QDeclarativeCameraImageProcessing::ColorFilter QDeclarativeCameraImageProcessing::colorFilter() const
+{
+    return ColorFilter(m_imageProcessing->colorFilter());
+}
+
+void QDeclarativeCameraImageProcessing::setColorFilter(ColorFilter filter)
+{
+    if (this->colorFilter() != filter) {
+        m_imageProcessing->setColorFilter(QCameraImageProcessing::ColorFilter(filter));
+        emit colorFilterChanged();
+    }
+}
+
 /*!
     \qmlsignal QtMultimedia::Camera::whiteBalanceModeChanged(Camera::WhiteBalanceMode)
     This signal is emitted when the \c whiteBalanceMode property is changed.

src/imports/multimedia/qdeclarativecameraimageprocessing_p.h

@@ -56,6 +56,7 @@ class QDeclarativeCameraImageProcessing : public QObject
 {
     Q_OBJECT
     Q_ENUMS(WhiteBalanceMode)
+    Q_ENUMS(ColorFilter)
 
     Q_PROPERTY(WhiteBalanceMode whiteBalanceMode READ whiteBalanceMode WRITE setWhiteBalanceMode NOTIFY whiteBalanceModeChanged)
     Q_PROPERTY(qreal manualWhiteBalance READ manualWhiteBalance WRITE setManualWhiteBalance NOTIFY manualWhiteBalanceChanged)
@@ -63,7 +64,7 @@ class QDeclarativeCameraImageProcessing : public QObject
     Q_PROPERTY(qreal saturation READ saturation WRITE setSaturation NOTIFY saturationChanged)
     Q_PROPERTY(qreal sharpeningLevel READ sharpeningLevel WRITE setSharpeningLevel NOTIFY sharpeningLevelChanged)
     Q_PROPERTY(qreal denoisingLevel READ denoisingLevel WRITE setDenoisingLevel NOTIFY denoisingLevelChanged)
-
+    Q_PROPERTY(ColorFilter colorFilter READ colorFilter WRITE setColorFilter NOTIFY colorFilterChanged REVISION 1)
 public:
     enum WhiteBalanceMode {
         WhiteBalanceAuto = QCameraImageProcessing::WhiteBalanceAuto,
@@ -78,6 +79,19 @@ public:
         WhiteBalanceVendor = QCameraImageProcessing::WhiteBalanceVendor
     };
 
+    enum ColorFilter {
+        ColorFilterNone = QCameraImageProcessing::ColorFilterNone,
+        ColorFilterGrayscale = QCameraImageProcessing::ColorFilterGrayscale,
+        ColorFilterNegative = QCameraImageProcessing::ColorFilterNegative,
+        ColorFilterSolarize = QCameraImageProcessing::ColorFilterSolarize,
+        ColorFilterSepia = QCameraImageProcessing::ColorFilterSepia,
+        ColorFilterPosterize = QCameraImageProcessing::ColorFilterPosterize,
+        ColorFilterWhiteboard = QCameraImageProcessing::ColorFilterWhiteboard,
+        ColorFilterBlackboard = QCameraImageProcessing::ColorFilterBlackboard,
+        ColorFilterAqua = QCameraImageProcessing::ColorFilterAqua,
+        ColorFilterVendor = QCameraImageProcessing::ColorFilterVendor
+    };
+
     ~QDeclarativeCameraImageProcessing();
 
     WhiteBalanceMode whiteBalanceMode() const;
@@ -88,6 +102,8 @@ public:
     qreal sharpeningLevel() const;
     qreal denoisingLevel() const;
 
+    ColorFilter colorFilter() const;
+
 public Q_SLOTS:
     void setWhiteBalanceMode(QDeclarativeCameraImageProcessing::WhiteBalanceMode mode) const;
     void setManualWhiteBalance(qreal colorTemp) const;
@@ -97,6 +113,8 @@ public Q_SLOTS:
     void setSharpeningLevel(qreal value);
     void setDenoisingLevel(qreal value);
 
+    void setColorFilter(ColorFilter colorFilter);
+
 Q_SIGNALS:
     void whiteBalanceModeChanged(QDeclarativeCameraImageProcessing::WhiteBalanceMode) const;
     void manualWhiteBalanceChanged(qreal) const;
@@ -106,6 +124,8 @@ Q_SIGNALS:
     void sharpeningLevelChanged(qreal);
     void denoisingLevelChanged(qreal);
 
+    void colorFilterChanged();
+
 private:
     friend class QDeclarativeCamera;
     QDeclarativeCameraImageProcessing(QCamera *camera, QObject *parent = 0);