1 files changed, 40 insertions, 0 deletions
diff --git a/source/rendering/StarFontTextureGroup.cpp b/source/rendering/StarFontTextureGroup.cpp
new file mode 100644
index 0000000..038b535
--- /dev/null
+++ b/source/rendering/StarFontTextureGroup.cpp
@@ -0,0 +1,40 @@
+#include "StarFontTextureGroup.hpp"
+#include "StarTime.hpp"
+#include "StarImageProcessing.hpp"
+
+namespace Star {
+
+FontTextureGroup::FontTextureGroup(FontPtr font, TextureGroupPtr textureGroup)
+  : m_font(move(font)), m_textureGroup(move(textureGroup)) {}
+
+void FontTextureGroup::cleanup(int64_t timeout) {
+  int64_t currentTime = Time::monotonicMilliseconds();
+  eraseWhere(m_glyphs, [&](auto const& p) { return currentTime - p.second.time > timeout; });
+}
+
+TexturePtr FontTextureGroup::glyphTexture(String::Char c, unsigned size) {
+  return glyphTexture(c, size, "");
+}
+
+TexturePtr FontTextureGroup::glyphTexture(String::Char c, unsigned size, String const& processingDirectives) {
+  auto res = m_glyphs.insert(GlyphDescriptor{c, size, processingDirectives}, GlyphTexture());
+
+  if (res.second) {
+    m_font->setPixelSize(size);
+    Image image = m_font->render(c);
+    if (!processingDirectives.empty())
+      image = processImageOperations(parseImageOperations(processingDirectives), image);
+
+    res.first->second.texture = m_textureGroup->create(image);
+  }
+
+  res.first->second.time = Time::monotonicMilliseconds();
+  return res.first->second.texture;
+}
+
+unsigned FontTextureGroup::glyphWidth(String::Char c, unsigned fontSize) {
+  m_font->setPixelSize(fontSize);
+  return m_font->width(c);
+}
+
+}