Convert visual layers to scene nodes.

src/ui_elements/widgets/TextBox.cpp

@@ -1,9 +1,9 @@
 #include "TextBox.h"
 
 #include "TextNode.h"
-#include "VisualLayer.h"
 #include "GeometryNode.h"
 #include "KeyboardEvent.h"
+#include "TransformNode.h"
 
 #include <sstream>
 
@@ -24,6 +24,7 @@ std::unique_ptr<TextBox> TextBox::Create()
 void TextBox::setContent(const std::string& text)
 {
     mContent = text;
+    mContentDirty = true;
 }
 
 std::string TextBox::getContent() const
@@ -34,6 +35,7 @@ std::string TextBox::getContent() const
 void TextBox::appendContent(const std::string& text)
 {
     mContent += text;
+    mContentDirty = true;
 }
 
 bool TextBox::onMyKeyboardEvent(const KeyboardEvent* event)
@@ -72,6 +74,7 @@ bool TextBox::onMyKeyboardEvent(const KeyboardEvent* event)
     return true;
 }
 
+/*
 void TextBox::onPaintEvent(const PaintEvent* event)
 {
     mMyLayers.clear();
@@ -101,3 +104,38 @@ void TextBox::onPaintEvent(const PaintEvent* event)
     }
     addMyLayers();
 }
+*/
+
+bool TextBox::isDirty() const
+{
+    return Widget::isDirty() || mContentDirty;
+}
+
+void TextBox::doPaint(const PaintEvent* event)
+{
+    updateBackground(event);
+    updateLabel(event);
+}
+
+void TextBox::updateLabel(const PaintEvent* event)
+{
+    unsigned fontOffset = unsigned(mContent.size()) * 4;
+    auto middle = DiscretePoint(mLocation.GetX() + mSize.mWidth/2 - fontOffset, mLocation.GetY() + mSize.mHeight/2 + 4);
+
+    if (!mTextNode)
+    {
+        mTextNode = TextNode::Create(mContent, middle);
+        mRootNode->addChild(mTextNode.get());
+    }
+
+    if (mMaterialDirty)
+    {
+        mTextNode->setFillColor(mBackgroundColor);
+    }
+
+    if (mContentDirty)
+    {
+        mTextNode->setContent(mContent);
+        mContentDirty = false;
+    }
+}