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#include "StarFontTextureGroup.hpp"
#include "StarTime.hpp"
#include "StarImageProcessing.hpp"
namespace Star {
FontTextureGroup::FontTextureGroup(TextureGroupPtr textureGroup)
: m_textureGroup(std::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 (font.empty()) {
m_font = m_defaultFont;
m_fontName.clear();
}
else if (m_fontName != font) {
m_fontName = font;
auto find = m_fonts.find(font);
m_font = find != m_fonts.end() ? find->second : m_defaultFont;
}
}
String const& FontTextureGroup::activeFont() {
return m_fontName;
}
void FontTextureGroup::addFont(FontPtr const& font, String const& name, bool isDefault) {
m_fonts[name] = font;
if (isDefault)
m_defaultFont = m_font = font;
}
void FontTextureGroup::clearFonts() {
m_fonts.clear();
m_font = m_defaultFont;
}
void FontTextureGroup::setFallbackFont(String const& fontName) {
if (auto font = m_fonts.ptr(fontName))
m_fallbackFont = *font;
}
const FontTextureGroup::GlyphTexture& FontTextureGroup::glyphTexture(String::Char c, unsigned size, Directives const* processingDirectives)
{
Font* font = (m_font->exists(c) || !m_fallbackFont) ? m_font.get() : m_fallbackFont.get();
auto res = m_glyphs.insert(GlyphDescriptor{c, size, processingDirectives ? processingDirectives->hash() : 0, font}, GlyphTexture());
if (res.second) {
font->setPixelSize(size);
auto pair = font->render(c);
Image& image = pair.first;
if (processingDirectives) {
try {
Directives const& directives = *processingDirectives;
Vec2F preSize = Vec2F(image.size());
for (auto& entry : directives->entries)
processImageOperation(entry.operation, image);
res.first->second.offset = (preSize - Vec2F(image.size())) / 2;
}
catch (StarException const&) {
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.offset = Vec2F();
res.first->second.offset += Vec2F(pair.second);
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, nullptr).texture;
}
TexturePtr FontTextureGroup::glyphTexturePtr(String::Char c, unsigned size, Directives const* processingDirectives) {
return glyphTexture(c, size, processingDirectives).texture;
}
unsigned FontTextureGroup::glyphWidth(String::Char c, unsigned fontSize) {
Font* font = (m_font->exists(c) || !m_fallbackFont) ? m_font.get() : m_fallbackFont.get();
font->setPixelSize(fontSize);
return font->width(c);
}
}
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