minor refactor

src/graphics/ui/elements/Button.cpp

@@ -79,11 +79,7 @@ void Button::drawBackground(const DrawContext* pctx, Assets* assets) {
     glm::vec2 pos = calcPos();
     auto batch = pctx->getBatch2D();
     batch->texture(nullptr);
-    if (isEnabled()) {
-        batch->setColor(isPressed() ? pressedColor : (hover ? hoverColor : color));
-    } else {
-        batch->setColor({color.r, color.g, color.b, color.a * 0.5f});
-    }
+    batch->setColor(calcColor());
     batch->rect(pos.x, pos.y, size.x, size.y);
 }
 

src/graphics/ui/elements/CheckBox.cpp

@@ -17,7 +17,7 @@ void CheckBox::draw(const DrawContext* pctx, Assets* assets) {
     glm::vec2 pos = calcPos();
     auto batch = pctx->getBatch2D();
     batch->texture(nullptr);
-    batch->setColor(checked ? checkColor : (hover ? hoverColor : color));
+    batch->setColor(checked ? checkColor : calcColor());
     batch->rect(pos.x, pos.y, size.x, size.y);
 }
 

src/graphics/ui/elements/Container.cpp

@@ -92,12 +92,7 @@ void Container::draw(const DrawContext* pctx, Assets* assets) {
 }
 
 void Container::drawBackground(const DrawContext* pctx, Assets* assets) {
-    glm::vec4 color = this->color;
-    if (isEnabled()) {
-        color = (isPressed() ? pressedColor : (hover ? hoverColor : color));
-    } else {
-        color = glm::vec4(color.r, color.g, color.b, color.a * 0.5f);
-    }
+    glm::vec4 color = calcColor();
     if (color.a <= 0.001f)
         return;
     glm::vec2 pos = calcPos();

src/graphics/ui/elements/Image.cpp

@@ -14,7 +14,6 @@ Image::Image(std::string texture, glm::vec2 size) : UINode(size), texture(textur
 
 void Image::draw(const DrawContext* pctx, Assets* assets) {
     glm::vec2 pos = calcPos();
-    glm::vec4 color = getColor();
     auto batch = pctx->getBatch2D();
     
     auto texture = assets->getTexture(this->texture);
@@ -22,13 +21,10 @@ void Image::draw(const DrawContext* pctx, Assets* assets) {
         setSize(glm::vec2(texture->getWidth(), texture->getHeight()));
     }
     batch->texture(texture);
-    if (isEnabled()) {
-        batch->setColor(isPressed() ? pressedColor : (hover ? hoverColor : color));
-    } else {
-        batch->setColor({color.r, color.g, color.b, color.a * 0.5f});
-    }
-    batch->rect(pos.x, pos.y, size.x, size.y, 
-                0, 0, 0, UVRegion(), false, true, batch->getColor());
+    batch->rect(
+        pos.x, pos.y, size.x, size.y, 
+        0, 0, 0, UVRegion(), false, true, calcColor()
+    );
 }
 
 void Image::setAutoResize(bool flag) {

src/graphics/ui/elements/InputBindBox.cpp

@@ -19,7 +19,7 @@ void InputBindBox::drawBackground(const DrawContext* pctx, Assets* assets) {
     glm::vec2 pos = calcPos();
     auto batch = pctx->getBatch2D();
     batch->texture(nullptr);
-    batch->setColor(isFocused() ? focusedColor : (hover ? hoverColor : color));
+    batch->setColor(isFocused() ? focusedColor : calcColor());
     batch->rect(pos.x, pos.y, size.x, size.y);
     label->setText(util::str2wstr_utf8(binding.text()));
 }

src/graphics/ui/elements/Label.cpp

@@ -148,12 +148,7 @@ void Label::draw(const DrawContext* pctx, Assets* assets) {
     if (cache.resetFlag) {
         cache.update(text, multiline, textWrap);
     }
-
-    if (isEnabled()) {
-        batch->setColor(isPressed() ? pressedColor : (hover ? hoverColor : color));
-    } else {
-        batch->setColor({color.r, color.g, color.b, color.a * 0.5f});
-    }
+    batch->setColor(calcColor());
 
     uint lineHeight = font->getLineHeight();
     if (cache.lines.size() > 1) {

src/graphics/ui/elements/UINode.cpp

@@ -132,6 +132,16 @@ void UINode::scrolled(int value) {
     }
 }
 
+glm::vec4 UINode::calcColor() const {
+    glm::vec4 color = this->color;
+    if (isEnabled()) {
+        color = (isPressed() ? pressedColor : (hover ? hoverColor : color));
+    } else {
+        color = glm::vec4(color.r, color.g, color.b, color.a * 0.5f);
+    }
+    return color;
+}
+
 void UINode::setPos(glm::vec2 pos) {
     this->pos = pos;
 }

src/graphics/ui/elements/UINode.hpp

@@ -172,6 +172,8 @@ namespace gui {
         virtual void setResizing(bool flag);
         virtual bool isResizing() const;
 
+        virtual glm::vec4 calcColor() const;
+
         /* Get inner content offset. Used for scroll */
         virtual glm::vec2 contentOffset() {return glm::vec2(0.0f);};
         /* Calculate screen position of the element */