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/*
* CTrueTypeFont.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "CTrueTypeFont.h"
#include "CBitmapFont.h"
#include "../render/Colors.h"
#include "../renderSDL/SDL_Extensions.h"
#include "../../lib/CConfigHandler.h"
#include "../../lib/json/JsonNode.h"
#include "../../lib/filesystem/Filesystem.h"
#include "../../lib/texts/TextOperations.h"
std::pair<std::unique_ptr<ui8[]>, ui64> CTrueTypeFont::loadData(const JsonNode & config)
{
std::string filename = "Data/" + config["file"].String();
return CResourceHandler::get()->load(ResourcePath(filename, EResType::TTF_FONT))->readAll();
}
int CTrueTypeFont::getPointSize(const JsonNode & config) const
{
float fontScale = settings["video"]["fontScalingFactor"].Float();
int scalingFactor = getScalingFactor();
if (config.isNumber())
return std::round(config.Integer() * scalingFactor * fontScale);
else
return std::round(config[scalingFactor-1].Integer() * fontScale);
}
TTF_Font * CTrueTypeFont::loadFont(const JsonNode &config)
{
if(!TTF_WasInit() && TTF_Init()==-1)
throw std::runtime_error(std::string("Failed to initialize true type support: ") + TTF_GetError() + "\n");
return TTF_OpenFontRW(SDL_RWFromConstMem(data.first.get(), data.second), 1, getPointSize(config["size"]));
}
int CTrueTypeFont::getFontStyle(const JsonNode &config) const
{
const JsonVector & names = config["style"].Vector();
int ret = 0;
for(const JsonNode & node : names)
{
if (node.String() == "bold")
ret |= TTF_STYLE_BOLD;
else if (node.String() == "italic")
ret |= TTF_STYLE_ITALIC;
}
return ret;
}
CTrueTypeFont::CTrueTypeFont(const JsonNode & fontConfig):
data(loadData(fontConfig)),
font(loadFont(fontConfig), TTF_CloseFont),
blended(true),
outline(fontConfig["outline"].Bool()),
dropShadow(!fontConfig["noShadow"].Bool())
{
assert(font);
TTF_SetFontStyle(font.get(), getFontStyle(fontConfig));
TTF_SetFontHinting(font.get(),TTF_HINTING_MONO);
logGlobal->debug("Loaded TTF font: '%s', point size %d, height %d, ascent %d, descent %d, line skip %d",
fontConfig["file"].String(),
getPointSize(fontConfig["size"]),
TTF_FontHeight(font.get()),
TTF_FontAscent(font.get()),
TTF_FontDescent(font.get()),
TTF_FontLineSkip(font.get())
);
}
CTrueTypeFont::~CTrueTypeFont() = default;
size_t CTrueTypeFont::getFontAscentScaled() const
{
return TTF_FontAscent(font.get());
}
size_t CTrueTypeFont::getLineHeightScaled() const
{
return TTF_FontHeight(font.get());
}
size_t CTrueTypeFont::getGlyphWidthScaled(const char *text) const
{
return getStringWidthScaled(std::string(text, TextOperations::getUnicodeCharacterSize(*text)));
}
bool CTrueTypeFont::canRepresentCharacter(const char * text) const
{
uint32_t codepoint = TextOperations::getUnicodeCodepoint(text, TextOperations::getUnicodeCharacterSize(*text));
#if SDL_TTF_VERSION_ATLEAST(2, 0, 18)
return TTF_GlyphIsProvided32(font.get(), codepoint);
#elif SDL_TTF_VERSION_ATLEAST(2, 0, 12)
if (codepoint <= 0xffff)
return TTF_GlyphIsProvided(font.get(), codepoint);
return true;
#else
return true;
#endif
}
size_t CTrueTypeFont::getStringWidthScaled(const std::string & text) const
{
int width;
TTF_SizeUTF8(font.get(), text.c_str(), &width, nullptr);
if (outline)
width += getScalingFactor();
if (dropShadow || outline)
width += getScalingFactor();
return width;
}
void CTrueTypeFont::renderText(SDL_Surface * surface, const std::string & data, const ColorRGBA & color, const Point & pos) const
{
if (data.empty())
return;
if (outline)
renderTextImpl(surface, data, Colors::BLACK, pos - Point(1,1) * getScalingFactor());
if (dropShadow || outline)
renderTextImpl(surface, data, Colors::BLACK, pos + Point(1,1) * getScalingFactor());
renderTextImpl(surface, data, color, pos);
}
void CTrueTypeFont::renderTextImpl(SDL_Surface * surface, const std::string & data, const ColorRGBA & color, const Point & pos) const
{
SDL_Surface * rendered;
if (blended)
rendered = TTF_RenderUTF8_Blended(font.get(), data.c_str(), CSDL_Ext::toSDL(color));
else
rendered = TTF_RenderUTF8_Solid(font.get(), data.c_str(), CSDL_Ext::toSDL(color));
assert(rendered);
CSDL_Ext::blitSurface(rendered, surface, pos);
SDL_FreeSurface(rendered);
}
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