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#include "StarFontTextureGroup.hpp"
#include "StarTime.hpp"
#include "StarImageProcessing.hpp"
namespace Star {
FontTextureGroup::FontTextureGroup(TextureGroupPtr textureGroup)
: 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; });
}
void FontTextureGroup::switchFont(String const& font) {
if (m_fontName != font) {
m_fontName = font;
auto find = m_fonts.find(font);
m_font = find != m_fonts.end() ? find->second : m_defaultFont;
}
}
void FontTextureGroup::addFont(FontPtr const& font, String const& name, bool default) {
m_fonts[name] = font;
if (default)
m_defaultFont = m_font = font;
}
const FontTextureGroup::GlyphTexture& FontTextureGroup::glyphTexture(String::Char c, unsigned size, String const& processingDirectives)
{
auto res = m_glyphs.insert(GlyphDescriptor{c, size, processingDirectives, m_font.get() }, GlyphTexture());
if (res.second) {
m_font->setPixelSize(size);
Image image = m_font->render(c);
if (!processingDirectives.empty()) {
try {
Vec2F preSize = Vec2F(image.size());
auto imageOperations = parseImageOperations(processingDirectives);
for (auto& imageOp : imageOperations) {
if (auto border = imageOp.ptr<BorderImageOperation>())
border->includeTransparent = true;
}
image = processImageOperations(imageOperations, image);
res.first->second.processingOffset = preSize - Vec2F(image.size());
}
catch (StarException&) {
image.forEachPixel([](unsigned x, unsigned y, Vec4B& pixel) {
pixel = ((x + y) % 2 == 0) ? Vec4B(255, 0, 255, pixel[3]) : Vec4B(0, 0, 0, pixel[3]);
});
}
}
else
res.first->second.processingOffset = Vec2F();
res.first->second.texture = m_textureGroup->create(image);
}
res.first->second.time = Time::monotonicMilliseconds();
return res.first->second;
}
TexturePtr FontTextureGroup::glyphTexturePtr(String::Char c, unsigned size) {
return glyphTexture(c, size, "").texture;
}
TexturePtr FontTextureGroup::glyphTexturePtr(String::Char c, unsigned size, String const& processingDirectives) {
return glyphTexture(c, size, processingDirectives).texture;
}
unsigned FontTextureGroup::glyphWidth(String::Char c, unsigned fontSize) {
m_font->setPixelSize(fontSize);
return m_font->width(c);
}
}
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