Added rendered picture saving ui

TODO

@@ -5,6 +5,7 @@ Technlology Preview 2 :
 - Add clouds to OpenGL with 3d textures.
 - Fix potential holes in land rendering (OpenGL and software).
 - Fix polygon culling near the camera in low-res renders (automatic tessellation ?).
+- Fix OpenGL water renderer sometimes not initializing correctly (value error in OpenGL).
 
 Technology Preview 3 :
 - Alter aerial perspective using estimation of the amount of light left after cloud layers traversal.

src/interface/modeler/quickapp/MainModelerWindow.cpp

@@ -27,7 +27,7 @@ MainModelerWindow::MainModelerWindow()
     qmlRegisterType<OpenGLView>("Paysages", 1, 0, "OpenGLView");
     engine()->addImageProvider("renderpreviewprovider", render_preview_provider);
 
-    setMinimumSize(QSize(1000, 800));
+    setMinimumSize(QSize(1280, 720));
     setTitle(QObject::tr("Paysages 3D"));
     setResizeMode(QQuickView::SizeRootObjectToView);
     setSource(QUrl("qrc:///main.qml"));

src/interface/modeler/quickapp/RenderProcess.cpp

@@ -61,6 +61,11 @@ RenderProcess::RenderProcess(MainModelerWindow *window, RenderPreviewProvider *d
         connect(button_cancel, SIGNAL(clicked()), this, SLOT(stopRender()));
     }
 
+    QObject *dialog_save = window->findQmlObject("render_save_dialog");
+    if (dialog_save) {
+        connect(dialog_save, SIGNAL(saveRequired(QString)), this, SLOT(savePicture(QString)));
+    }
+
     startTimer(100);
 }
 
@@ -93,10 +98,8 @@ void RenderProcess::startRender(Scenery *scenery, const RenderConfig &config)
     }
 
     // Enable "show last render" button
-    QObject *button_show = window->findQmlObject("tool_render_show");
+    window->setQmlProperty("tool_render_show", "enabled", true);
-    if (button_show) {
+    window->setQmlProperty("render_dialog", "rendering", true);
-        button_show->setProperty("enabled", true);
-    }
 
     has_render = true;
     rendering = true;
@@ -169,6 +172,11 @@ void RenderProcess::stopRender()
     }
 }
 
+void RenderProcess::savePicture(QString path)
+{
+    renderer->saveToDisk(path.replace("file://", "").toStdString());
+}
+
 const QSize RenderProcess::getPreviewSize()
 {
     if (renderer)
@@ -192,6 +200,7 @@ void RenderProcess::timerEvent(QTimerEvent *)
         delete render_thread;
         render_thread = NULL;
 
+        window->setQmlProperty("render_dialog", "rendering", false);
         window->getRenderer()->resume();
     }
 

src/interface/modeler/quickapp/RenderProcess.h

@@ -54,6 +54,11 @@ public slots:
      */
     void stopRender();
 
+    /**
+     * Save the current picture to a given path on disk.
+     */
+    void savePicture(QString path);
+
 protected:
     virtual void timerEvent(QTimerEvent *event) override;
 

src/interface/modeler/quickapp/qml/RenderDialog.qml

@@ -1,11 +1,15 @@
 import QtQuick 2.2
 import QtQuick.Controls 1.2
+import QtQuick.Dialogs 1.0
 import QtGraphicalEffects 1.0
 
 BaseRectangle {
+    id: render_dialog
+    objectName: "render_dialog"
     width: 400
     height: 300
     color: "#222429"
+    property bool rendering: false
 
     function refresh() {
         preview_image.source = "";
@@ -20,6 +24,41 @@ BaseRectangle {
         }
     }
 
+    Rectangle {
+        width: parent.width
+        height: 80
+        anchors.top: parent.top
+        anchors.left: parent.left
+        color: "#667080"
+    }
+
+    FileDialog {
+        id: render_save_dialog
+        objectName: "render_save_dialog"
+        title: "Choose a file to save the rendered image"
+        folder: shortcuts.documents
+        selectExisting: false
+
+        signal saveRequired(string filepath);
+
+        onAccepted: saveRequired(render_save_dialog.fileUrls[0].toString())
+    }
+
+    ToolbarButton {
+        id: render_save
+        objectName: "render_save"
+        picture: "images/icon_file_save.png"
+        anchors.top: parent.top
+        anchors.left: parent.left
+        anchors.margins: 10
+        enabled: !render_dialog.rendering
+        checkable: false
+        image_width: 48
+        image_height: 48
+
+        onClicked: render_save_dialog.open()
+    }
+
     ToolbarButton {
         id: render_cancel
         objectName: "render_cancel"
@@ -53,6 +92,7 @@ BaseRectangle {
     ProgressBar {
         id: render_progress
         objectName: "render_progress"
+        visible: render_dialog.rendering
         width: parent.width * 0.8
         anchors.top: preview_image.bottom
         anchors.horizontalCenter: preview_image.horizontalCenter