added overlay alpha to overlay settings

src/cropeditor/cropscene.cpp

@@ -105,8 +105,7 @@ CropScene::CropScene(QObject *parent, QPixmap pixmap)
     poly.append(prect.bottomRight());
     poly.append(prect.bottomLeft());
     polyItem = new QGraphicsPolygonItem(poly);
-    // TODO: Add Alpha Setting in screen overlay setting
+    polyItem->setBrush(QBrush(QColor(0, 0, 0, settings::settings().value("overlayAlpha", 96).toInt())));
-    polyItem->setBrush(QBrush(QColor(0, 0, 0, 96)));
     polyItem->setPen(QPen(Qt::NoPen));
     polyItem->setZValue(1);
     addItem(polyItem);

src/screenoverlay/screenoverlaysettings.cpp

@@ -10,6 +10,11 @@ ScreenOverlaySettings::ScreenOverlaySettings(ScreenOverlay *overlay, QWidget *pa
 
     ui->gridBox->setChecked(overlay->grid());
     ui->movementPattern->setCurrentIndex(overlay->movementPattern());
+
+    int overlayAlpha = settings::settings().value("overlayAlpha", 96).toInt();
+    ui->overlayAlphaSlider->setValue(overlayAlpha);
+    ui->overlayAlphaSpinner->setValue(overlayAlpha);
+
     highlight = overlay->highlight();
     fg = overlay->foreground();
     ui->preview->setStyleSheet(QString("background-color: %1; color: %2;").arg(highlight.name()).arg(fg.name()));
@@ -20,6 +25,8 @@ void ScreenOverlaySettings::on_buttonBox_accepted() {
     settings::settings().setValue("highlightColor", highlight);
     settings::settings().setValue("foregroundColor", fg);
     settings::settings().setValue("movementPattern", ui->movementPattern->currentIndex());
+
+    settings::settings().setValue("overlayAlpha", ui->overlayAlphaSpinner->value());
     overlay->loadSettings();
 }
 
@@ -37,6 +44,14 @@ void ScreenOverlaySettings::on_setHighlight_pressed() {
     ui->preview->setStyleSheet(QString("background-color: %1; color: %2;").arg(highlight.name()).arg(fg.name()));
 }
 
+void ScreenOverlaySettings::on_overlayAlphaSlider_sliderMoved(int position) {
+    ui->overlayAlphaSpinner->setValue(position);
+}
+
+void ScreenOverlaySettings::on_overlayAlphaSpinner_valueChanged(int arg1) {
+    ui->overlayAlphaSlider->setValue(arg1);
+}
+
 ScreenOverlaySettings::~ScreenOverlaySettings() {
     delete ui;
 }

src/screenoverlay/screenoverlaysettings.hpp

@@ -19,6 +19,8 @@ private slots:
     void on_buttonBox_accepted();
     void on_setHighlight_pressed();
     void on_fgColor_pressed();
+    void on_overlayAlphaSpinner_valueChanged(int arg);
+    void on_overlayAlphaSlider_sliderMoved(int arg);
 
 private:
     Ui::ScreenOverlaySettings *ui;

src/screenoverlay/screenoverlaysettings.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>214</width>
+    <width>211</width>
-    <height>282</height>
+    <height>356</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -47,6 +47,34 @@
      </property>
     </widget>
    </item>
+   <item>
+    <widget class="QLabel" name="label_3">
+     <property name="text">
+      <string>Overlay Alpha</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QSlider" name="overlayAlphaSlider">
+       <property name="maximum">
+        <number>255</number>
+       </property>
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QSpinBox" name="overlayAlphaSpinner">
+       <property name="maximum">
+        <number>255</number>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
    <item>
     <widget class="QGroupBox" name="groupBox">
      <property name="title">