Transparency demo.

include/JUI/Widgets/Image.hpp

@@ -30,5 +30,12 @@ namespace JUI
 
         void Draw() override;
         void Update(float delta) override;
+
+
+        bool FitImageToParent() const;
+        void FitImageToParent(bool on);
+
+    protected:
+        bool fit_image_to_parent;
     };
 }

main.cpp

@@ -132,10 +132,7 @@ JUI::Scene* CreateScene() {
     //win_element->SetPadding(1_px);
     // End Window //
 
-    auto darkie = new Image(root, sample_texture);
 
-    darkie->SetPosition({25_percent, 25_percent});
-    darkie->SetSize({25_percent, 25_percent});
 
     auto list = new VerticalListLayout(win_element->GetViewportInstance());
     list->SetPadding(10_px);
@@ -179,6 +176,9 @@ JUI::Scene* CreateScene() {
     text->SetTextSize(48);
     text->SetTextColor({255, 0, 0});
 
+    auto darkie = new Image(root, sample_texture);
+    darkie->FitImageToParent(true);
+    darkie->Color({255,255,255,128});
 
     root->SetViewportSize(800, 600);
 
@@ -212,6 +212,7 @@ public:
     void OnRefresh(float elapsed) override {
         Update();
         JGL::Update(getSize());
+        scene->SetViewportSize(getSize().x, getSize().y);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
         glMatrixMode(GL_MODELVIEW);
         glLoadIdentity();

src/JUI/Widgets/Image.cpp

@@ -28,11 +28,25 @@ namespace JUI
     void Image::Draw() {
         // TODO: Factor in margin?
 
-        ImageBase::Draw(GetAbsolutePosition(), GetAbsoluteSize());
+        if (fit_image_to_parent)
+        {
+            auto old_scale = scale;
+            scale = GetAbsoluteSize() / texture->GetDimensions();
+            ImageBase::Draw(GetAbsolutePosition(), GetAbsoluteSize());
+            scale = old_scale;
+        } else
+        {
+            ImageBase::Draw(GetAbsolutePosition(), GetAbsoluteSize());
+        }
+
         Widget::Draw();
     }
 
     void Image::Update(float delta) {
         Widget::Update(delta);
     }
+
+    bool Image::FitImageToParent() const { return fit_image_to_parent; }
+
+    void Image::FitImageToParent(bool on) { fit_image_to_parent = on; }
 }