Stripped back old shader code for now.

archive/ui/elements/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    UILabel.cpp
+    UIRectangle.cpp
+)

archive/ui/elements/UILabel.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "UILabel.hpp"
+
+using namespace Dawn;
+
+void UILabel::getSelfQuads(UICanvas &ctx) {
+  std::vector<struct UIShaderQuad> quads;
+  if(this->texture == nullptr || this->text.empty()) return;
+
+  glm::vec4 quad;
+  glm::vec2 pos = glm::vec2(0, this->texture->fontSize);
+  bool_t lastCharWasSpace = false;
+
+  for(size_t i = 0; i < text.size(); i++) {
+    wchar_t c = text[i];
+    auto info = texture->getCharacterData(c);
+
+    // Newline(s)
+    if(c == L'\n') {
+      pos.x = 0;
+      pos.y += this->texture->fontSize;
+      continue;
+    }
+
+    // Spaces
+    if(c == L' ') {
+      pos.x += info.advance.x;
+      lastCharWasSpace = true;
+      continue;
+    }
+
+    // Word Wrap
+    if(wordWrap) {
+      if(lastCharWasSpace) {
+        // Scan ahead to next space
+        float_t wordWidth = pos.x;// Start at current position and scan ahead.
+        for(size_t j = i; j < text.size(); j++) {
+          wchar_t c2 = text[j];
+          if(c2 == L' ' || c2 == L'\n') {
+            break;// If we hit another space, we are OK.
+          }
+
+          // Will this character fit on the row? If not the whole word will wrap.
+          auto info2 = texture->getCharacterData(c);
+          wordWidth += info.advance.x;
+          if(wordWidth > size.x) {
+            pos.x = 0;
+            pos.y += this->texture->fontSize;
+            break;
+          }
+        }
+
+        lastCharWasSpace = false;
+      }
+    // } else if(pos.x + info.size.x > subAlignedPosition.x + size.x) {
+    //   // Not word wrap, but instead just overflow characters.
+    //   pos.x = 0;
+    //   pos.y += this->texture->fontSize;
+    }
+
+    ctx.addQuad(
+      {
+        subAlignedPosition.x + pos.x + info.offset.x,
+        subAlignedPosition.y + pos.y + info.offset.y,
+        subAlignedPosition.x + pos.x + info.size.x + info.offset.x,
+        subAlignedPosition.y + pos.y + info.size.y + info.offset.y
+      },
+      {
+        info.quad.x,
+        info.quad.y,
+        info.quad.z,
+        info.quad.w
+      },
+      this->color,
+      UIShaderQuadStyle::FONT,
+      texture->texture
+    );
+    pos += info.advance;
+  }
+}
+
+float_t UILabel::getContentWidth() {
+  if(this->texture == nullptr || this->text.empty()) return 0.0f;
+
+  float_t lineWidth = 0.0f;
+  float_t width = 0.0f;
+  for(wchar_t c : text) {
+    if(c == L'\n') {
+      width = Math::max<float_t>(width, lineWidth);
+      lineWidth = 0.0f;
+      continue;
+    }
+
+    auto info = texture->getCharacterData(c);
+    lineWidth += info.advance.x;
+    if(
+      this->hasExplicitWidth() &&
+      lineWidth >= size.x
+    ) return size.x;
+  }
+  width = Math::max<float_t>(width, lineWidth);
+  return width;
+}
+
+float_t UILabel::getContentHeight() {
+  if(this->texture == nullptr || this->text.empty()) return 0.0f;
+
+  float_t height = this->texture->fontSize;
+  float_t lineWidth = 0.0f;
+  bool_t lastCharWasSpace = false;
+
+  for(wchar_t c : text) {
+    if(c == L'\n') {
+      height += this->texture->fontSize;
+      continue;
+    }
+
+    auto info = texture->getCharacterData(c);
+
+    if(c == L' ') {
+      lineWidth += info.advance.x;
+      lastCharWasSpace = true;
+      continue;
+    }
+
+    if(wordWrap) {
+      if(lastCharWasSpace) {
+        // Scan ahead to next space
+        float_t wordWidth = lineWidth;// Start at current position and scan ahead.
+        for(size_t j = 0; j < text.size(); j++) {
+          wchar_t c2 = text[j];
+          if(c2 == L' ' || c2 == L'\n') {
+            break;// If we hit another space, we are OK.
+          }
+
+          // Will this character fit on the row? If not the whole word will wrap.
+          auto info2 = texture->getCharacterData(c);
+          wordWidth += info.advance.x;
+          if(wordWidth > size.x) {
+            height += this->texture->fontSize;
+            lineWidth = 0.0f;
+            break;
+          }
+        }
+
+        lastCharWasSpace = false;
+      }
+    // } else if(lineWidth + info.size.x > size.x) {
+    //   height += this->texture->fontSize;
+    //   lineWidth = 0.0f;
+    }
+  }
+
+  return height;
+}
+
+std::shared_ptr<TrueTypeTexture> UILabel::getFont() {
+  return this->texture;
+}
+
+std::wstring UILabel::getText() {
+  return this->text;
+}
+
+void UILabel::setFont(std::shared_ptr<TrueTypeTexture> texture) {
+  this->texture = texture;
+}
+
+void UILabel::setText(const std::wstring &text) {
+  this->text = text;
+}

archive/ui/elements/UILabel.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "ui/UISubAlignableElement.hpp"
+#include "display/font/TrueTypeTexture.hpp"
+
+namespace Dawn {
+  class UILabel final : public UISubAlignableElement {
+    private:
+      std::shared_ptr<TrueTypeTexture> texture = nullptr;
+      std::wstring text = L"Hello World";
+
+    protected:
+      void getSelfQuads(UICanvas &ctx) override;
+
+    public:
+      bool_t wordWrap = true;
+      struct Color color = COLOR_WHITE;
+
+      float_t getContentWidth() override;
+      float_t getContentHeight() override;
+
+      /**
+       * Returns the font used for this label.
+       * 
+       * @return The font used for this label.
+       */
+      std::shared_ptr<TrueTypeTexture> getFont();
+
+      /**
+       * Returns the text used for this label.
+       * 
+       * @return The text used for this label.
+       */
+      std::wstring getText();
+
+      /**
+       * Sets the font to use for this label.
+       * 
+       * @param texture TrueType texture to use for this label.
+       */
+      void setFont(std::shared_ptr<TrueTypeTexture> texture);
+
+      /**
+       * Sets the text to use for this label.
+       * 
+       * @param text The text to use for this label.
+       */
+      void setText(const std::wstring &text);
+  };
+}

archive/ui/elements/UIRectangle.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "UIRectangle.hpp"
+
+using namespace Dawn;
+
+void UIRectangle::getSelfQuads(UICanvas &ctx) {
+  std::vector<struct UIShaderQuad> quads;
+  ctx.addQuad(
+    glm::vec4(position, position + size),
+    uv,
+    color,
+    UIShaderQuadStyle::TEXTURED,
+    texture
+  );
+}

archive/ui/elements/UIRectangle.hpp

@@ -0,0 +1,19 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "ui/UIAlignableElement.hpp"
+
+namespace Dawn {
+  class UIRectangle final : public UIAlignableElement {
+    protected:
+      void getSelfQuads(UICanvas &ctx) override;
+
+    public:
+      struct Color color = COLOR_WHITE;
+      std::shared_ptr<Texture> texture = nullptr;
+      glm::vec4 uv = glm::vec4(0,0,1,1);
+  };
+}