Restored UI Label support

assets/dawnrpg/CMakeLists.txt

@@ -0,0 +1,6 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+tool_truetype(font_silver "${CMAKE_CURRENT_LIST_DIR}/Silver.ttf")

lib/CMakeLists.txt

@@ -9,6 +9,7 @@ if(DAWN_TARGET STREQUAL "linux-x64-glfw")
   add_subdirectory(glad)
   add_subdirectory(glfw)
   add_subdirectory(libarchive)
+  add_subdirectory(freetype)
 else()
   message(FATAL_ERROR "Unknown target: ${DAWN_TARGET}")
 endif()

src/CMakeLists.txt

@@ -14,7 +14,7 @@ if(DAWN_TARGET STREQUAL "linux-x64-glfw")
   add_subdirectory(dawnlinux)
   add_subdirectory(dawnglfw)
   add_subdirectory(dawnopengl)
-  # add_subdirectory(dawnpoker)
+  add_subdirectory(dawnrpg)
 else()
   message(FATAL_ERROR "You need to define an entry target")
 endif()

src/dawn/asset/AssetManager.cpp

@@ -5,6 +5,7 @@
 
 #include "AssetManager.hpp"
 #include "loaders/TextureLoader.hpp"
+#include "loaders/TrueTypeLoader.hpp"
 
 using namespace Dawn;
 
@@ -59,6 +60,27 @@ bool_t AssetManager::isLoaded(const std::string filename) {
   return false;
 }
 
+template<>
+std::shared_ptr<TrueTypeTexture> AssetManager::get<TrueTypeTexture>(
+  const std::string filename,
+  const uint32_t fontSize
+) {
+  auto existing = this->getExisting<TrueTypeLoader>(filename);
+  if(existing) {
+    // Check pointer hasn't gone stale, if it has remove it and create new.
+    auto texture = existing->getTexture(fontSize);
+    if(texture) return texture;
+    this->removeExisting(filename);
+  }
+
+  std::shared_ptr<TrueTypeLoader> loader = std::make_shared<TrueTypeLoader>(
+    filename
+  );
+  pendingAssetLoaders.push_back(std::static_pointer_cast<AssetLoader>(loader));
+  return loader->getTexture(fontSize);
+}
+
+
 AssetManager::~AssetManager() {
   
 }

src/dawn/asset/loaders/CMakeLists.txt

@@ -7,4 +7,5 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     TextureLoader.cpp
+    TrueTypeLoader.cpp
 )

src/dawn/asset/loaders/TrueTypeLoader.cpp

@@ -0,0 +1,97 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "TrueTypeLoader.hpp"
+#include "assert/assert.hpp"
+
+using namespace Dawn;
+
+TrueTypeLoader::TrueTypeLoader(const std::string name) :
+  AssetLoader(name),
+  loader(name + ".ttf")
+{
+  // Init the font.
+  auto ret = FT_Init_FreeType(&fontLibrary);
+  assertTrue(ret == 0, "Failed to initialize FreeType library.");
+}
+
+void TrueTypeLoader::updateSync() {
+  if(state != TrueTypeLoaderState::ASYNC_DONE) return;
+  state = TrueTypeLoaderState::SYNC_LOADING;
+
+  // Init all the textures.
+  auto it = textures.begin();
+  while(it != textures.end()) {
+    auto texture = it->second.lock();
+
+    if(texture) {
+      texture->setFace(face);
+      it++;
+      continue;
+    }
+
+    it = textures.erase(it);
+  }
+
+  // Done
+  state = TrueTypeLoaderState::SYNC_DONE;
+  this->loaded = true;
+}
+
+void TrueTypeLoader::updateAsync() {
+  if(state != TrueTypeLoaderState::INITIAL) return;
+  state = TrueTypeLoaderState::ASYNC_LOADING;
+
+  // Load the data.
+  this->loader.open();
+  size_t size = loader.getSize();
+  buffer = new uint8_t[size];
+
+  // Read the data.
+  size_t readSize = loader.read(buffer, size);
+  assertTrue(readSize == size, "Failed to read all data from TrueTypeLoader.");
+
+  // Init the font.
+  auto ret = FT_New_Memory_Face(fontLibrary, buffer, size, 0, &face);
+  assertTrue(ret == 0, "Failed to load font face.");
+
+  // Now close the asset loader
+  loader.close();
+  state = TrueTypeLoaderState::ASYNC_DONE;
+}
+
+std::shared_ptr<TrueTypeTexture> TrueTypeLoader::getTexture(
+  const uint32_t fontSize
+) {
+  // Check if we have the texture already and it hasn't gone stale.
+  auto it = textures.find(fontSize);
+  if(it != textures.end()) {
+    if(!it->second.expired()) return it->second.lock();
+    textures.erase(it);
+  }
+
+  // Create the texture.
+  auto texture = std::make_shared<TrueTypeTexture>(fontSize);
+  textures[fontSize] = texture;
+  if(this->loaded) texture->setFace(face);
+  return texture;
+}
+
+TrueTypeLoader::~TrueTypeLoader() {
+  if(
+    this->state == TrueTypeLoaderState::SYNC_DONE ||
+    this->state == TrueTypeLoaderState::SYNC_LOADING ||
+    this->state == TrueTypeLoaderState::ASYNC_DONE
+  ) {
+    FT_Done_Face(face);
+  }
+
+  FT_Done_FreeType(fontLibrary);
+
+  if(buffer != nullptr) {
+    delete[] buffer;
+    buffer = nullptr;
+  }
+}

src/dawn/asset/loaders/TrueTypeLoader.hpp

@@ -0,0 +1,57 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "asset/AssetLoader.hpp"
+#include "asset/AssetDataLoader.hpp"
+#include "display/font/TrueTypeTexture.hpp"
+
+namespace Dawn {
+  enum class TrueTypeLoaderState {
+    INITIAL,
+    ASYNC_LOADING,
+    ASYNC_DONE,
+    SYNC_LOADING,
+    SYNC_DONE
+  };
+
+  class TrueTypeLoader : public AssetLoader {
+    protected:
+      FT_Library fontLibrary;
+      FT_Face face;
+      AssetDataLoader loader;
+      std::unordered_map<uint32_t, std::weak_ptr<TrueTypeTexture>> textures;
+      enum TrueTypeLoaderState state = TrueTypeLoaderState::INITIAL;
+      uint8_t *buffer = nullptr;
+
+    public:
+      /**
+       * Constructs a TrueTypeLoader. You should instead use the parent
+       * asset managers' abstracted load method
+       * 
+       * @param name File name asset to load, omitting the extension.
+       */
+      TrueTypeLoader(const std::string name);
+
+      void updateSync() override;
+      void updateAsync() override;
+
+      /**
+       * Returns the texture for the given font size.
+       * 
+       * @param fontSize Font size to get the texture for.
+       * @return Texture for the given character.
+       */
+      std::shared_ptr<TrueTypeTexture> getTexture(
+        const uint32_t fontSize
+      );
+
+      /**
+       * Dispose / Cleanup the truetype asset. Will also dispose the underlying
+       * truetype itself.
+       */
+      ~TrueTypeLoader();
+  };
+}

src/dawn/display/CMakeLists.txt

@@ -12,5 +12,6 @@ target_sources(${DAWN_TARGET_NAME}
 )
 
 # Subdirs
+add_subdirectory(font)
 add_subdirectory(mesh)
 add_subdirectory(shader)

src/dawn/ui/elements/CMakeLists.txt

@@ -5,5 +5,6 @@
 
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
+    UILabel.cpp
     UIRectangle.cpp
 )

src/dawn/ui/elements/UILabel.cpp

@@ -0,0 +1,175 @@
+// 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;
+}

src/dawn/ui/elements/UILabel.hpp

@@ -1,17 +1,54 @@
-// Copyright (c) 2024 Dominic Masters
+// Copyright (c) 2023 Dominic Masters
 // 
 // This software is released under the MIT License.
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "ui/UIAlignableElement.hpp"
+#include "ui/UISubAlignableElement.hpp"
+#include "display/font/TrueTypeTexture.hpp"
 
 namespace Dawn {
-  class UILabel final : public UIAlignableElement {
+  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:
-      std::shared_ptr<TrueTypeTexture> font;
+      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);
   };
-}
+}

src/dawnrpg/CMakeLists.txt

@@ -12,12 +12,11 @@ target_include_directories(${DAWN_TARGET_NAME}
 # Sources
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
-    dawnpoker.cpp
+    dawnrpg.cpp
 )
 
 # Subdirs
-add_subdirectory(poker)
 add_subdirectory(scenes)
 
 # Assets
-# include("${DAWN_ASSETS_SOURCE_DIR}/games/dawnpoker/CMakeLists.txt")
+include("${DAWN_ASSETS_SOURCE_DIR}/dawnrpg/CMakeLists.txt")

src/dawnrpg/scenes/TestScene.cpp

@@ -12,7 +12,7 @@
 
 #include "component/ui/UICanvas.hpp"
 #include "ui/elements/UIRectangle.hpp"
-// #include "ui/elements/UILabel.hpp"
+#include "ui/elements/UILabel.hpp"
 #include "ui/UIMenu.hpp"
 #include "ui/container/UIRowContainer.hpp"
 #include "ui/container/UIPaddingContainer.hpp"
@@ -51,6 +51,19 @@ void Dawn::testScene(Scene &s) {
   rect->alignY = UIAlignmentType::START;
   rect->color = COLOR_MAGENTA;
   container->appendChild(rect);
+
+  auto texture = s.getGame()->assetManager.get<TrueTypeTexture>("font_silver", 128);
+  while(!s.getGame()->assetManager.isEverythingLoaded()) {
+    s.getGame()->assetManager.update();
+  }
+  
+  auto label = std::make_shared<UILabel>();
+  label->align = { 0, 0, UI_ALIGN_SIZE_AUTO, UI_ALIGN_SIZE_AUTO };
+  label->alignX = UIAlignmentType::START;
+  label->alignY = UIAlignmentType::START;
+  label->setFont(texture);
+  label->setText(L"Hello World!");
+  container->appendChild(label);
   
   // auto game = std::make_shared<PokerGame>();
   // auto player0 = game->addNewPlayer();