Add support for Hue adjustment to QCameraImageProcessing

Change-Id: I99dda60c2118972efd6d703de57cb43d0a1f0be5
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

2 files changed, 65 insertions, 41 deletions

diff --git a/examples/multimediawidgets/camera/camera.cpp b/examples/multimediawidgets/camera/camera.cpp
index c77af6482..dcbb4d50e 100644
--- a/examples/multimediawidgets/camera/camera.cpp
+++ b/examples/multimediawidgets/camera/camera.cpp
@@ -139,6 +139,7 @@ void Camera::setCamera(const QCameraInfo &cameraInfo)
         ui->brightnessSlider->setEnabled(false);
         ui->contrastSlider->setEnabled(false);
         ui->saturationSlider->setEnabled(false);
+        ui->hueSlider->setEnabled(false);
     } else {
         connect(ui->brightnessSlider, &QSlider::valueChanged, [imageProcessing](int value) {
             imageProcessing->setBrightness(value/100.);
@@ -149,6 +150,9 @@ void Camera::setCamera(const QCameraInfo &cameraInfo)
         connect(ui->saturationSlider, &QSlider::valueChanged, [imageProcessing](int value) {
             imageProcessing->setSaturation(value/100.);
         });
+        connect(ui->hueSlider, &QSlider::valueChanged, [imageProcessing](int value) {
+            imageProcessing->setHue(value/100.);
+        });
     }
 
 
diff --git a/examples/multimediawidgets/camera/camera.ui b/examples/multimediawidgets/camera/camera.ui
index ad14096ba..3fd944aed 100644
--- a/examples/multimediawidgets/camera/camera.ui
+++ b/examples/multimediawidgets/camera/camera.ui
@@ -25,21 +25,23 @@
         <string>Image</string>
        </attribute>
        <layout class="QGridLayout" name="gridLayout">
-        <item row="4" column="0">
-         <widget class="QLabel" name="label_3">
-          <property name="text">
-           <string>Contrast</string>
+        <item row="8" column="0">
+         <widget class="QSlider" name="saturationSlider">
+          <property name="minimum">
+           <number>-100</number>
           </property>
-         </widget>
-        </item>
-        <item row="10" column="0">
-         <widget class="QLabel" name="label">
-          <property name="text">
-           <string>Exposure Compensation:</string>
+          <property name="maximum">
+           <number>100</number>
+          </property>
+          <property name="value">
+           <number>0</number>
+          </property>
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
           </property>
          </widget>
         </item>
-        <item row="9" column="0">
+        <item row="11" column="0">
          <spacer name="verticalSpacer_2">
           <property name="orientation">
            <enum>Qt::Vertical</enum>
@@ -52,10 +54,16 @@
           </property>
          </spacer>
         </item>
-        <item row="7" column="0">
-         <widget class="QLabel" name="label_2">
-          <property name="text">
-           <string>Saturation</string>
+        <item row="6" column="0">
+         <widget class="QSlider" name="contrastSlider">
+          <property name="minimum">
+           <number>-100</number>
+          </property>
+          <property name="maximum">
+           <number>100</number>
+          </property>
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
           </property>
          </widget>
         </item>
@@ -72,6 +80,34 @@
           </property>
          </widget>
         </item>
+        <item row="2" column="0">
+         <widget class="QLabel" name="label_4">
+          <property name="text">
+           <string>Brightness</string>
+          </property>
+         </widget>
+        </item>
+        <item row="7" column="0">
+         <widget class="QLabel" name="label_2">
+          <property name="text">
+           <string>Saturation</string>
+          </property>
+         </widget>
+        </item>
+        <item row="4" column="0">
+         <widget class="QLabel" name="label_3">
+          <property name="text">
+           <string>Contrast</string>
+          </property>
+         </widget>
+        </item>
+        <item row="12" column="0">
+         <widget class="QLabel" name="label">
+          <property name="text">
+           <string>Exposure Compensation:</string>
+          </property>
+         </widget>
+        </item>
         <item row="0" column="0">
          <widget class="QPushButton" name="takeImageButton">
           <property name="enabled">
@@ -86,7 +122,14 @@
           </property>
          </widget>
         </item>
-        <item row="11" column="0">
+        <item row="9" column="0">
+         <widget class="QLabel" name="label_5">
+          <property name="text">
+           <string>Hue</string>
+          </property>
+         </widget>
+        </item>
+        <item row="13" column="0">
          <widget class="QSlider" name="exposureCompensation">
           <property name="minimum">
            <number>-4</number>
@@ -105,31 +148,8 @@
           </property>
          </widget>
         </item>
-        <item row="8" column="0">
-         <widget class="QSlider" name="saturationSlider">
-          <property name="minimum">
-           <number>-100</number>
-          </property>
-          <property name="maximum">
-           <number>100</number>
-          </property>
-          <property name="value">
-           <number>0</number>
-          </property>
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
-          </property>
-         </widget>
-        </item>
-        <item row="2" column="0">
-         <widget class="QLabel" name="label_4">
-          <property name="text">
-           <string>Brightness</string>
-          </property>
-         </widget>
-        </item>
-        <item row="6" column="0">
-         <widget class="QSlider" name="contrastSlider">
+        <item row="10" column="0">
+         <widget class="QSlider" name="hueSlider">
           <property name="minimum">
            <number>-100</number>
           </property>