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vcmi/client/renderSDL/CTrueTypeFont.cpp
2023-02-01 16:42:03 +02:00

97 lines
2.4 KiB
C++

/*
* 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 "Fonts.h"
#include <SDL_ttf.h>
#include "SDL_Extensions.h"
#include "../../lib/JsonNode.h"
#include "../../lib/vcmi_endian.h"
#include "../../lib/filesystem/Filesystem.h"
#include "../../lib/CGeneralTextHandler.h"
TTF_Font * CTrueTypeFont::loadFont(const JsonNode &config)
{
int pointSize = static_cast<int>(config["size"].Float());
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(), (int)data.second), 1, pointSize);
}
int CTrueTypeFont::getFontStyle(const JsonNode &config)
{
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(fontConfig["blend"].Bool())
{
assert(font);
TTF_SetFontStyle(font.get(), getFontStyle(fontConfig));
}
size_t CTrueTypeFont::getLineHeight() const
{
return TTF_FontHeight(font.get());
}
size_t CTrueTypeFont::getGlyphWidth(const char *data) const
{
return getStringWidth(std::string(data, Unicode::getCharacterSize(*data)));
/*
int advance;
TTF_GlyphMetrics(font.get(), *data, nullptr, nullptr, nullptr, nullptr, &advance);
return advance;
*/
}
size_t CTrueTypeFont::getStringWidth(const std::string & data) const
{
int width;
TTF_SizeUTF8(font.get(), data.c_str(), &width, nullptr);
return width;
}
void CTrueTypeFont::renderText(SDL_Surface * surface, const std::string & data, const SDL_Color & color, const Point & pos) const
{
if (color.r != 0 && color.g != 0 && color.b != 0) // not black - add shadow
renderText(surface, data, Colors::BLACK, pos + Point(1,1));
if (!data.empty())
{
SDL_Surface * rendered;
if (blended)
rendered = TTF_RenderUTF8_Blended(font.get(), data.c_str(), color);
else
rendered = TTF_RenderUTF8_Solid(font.get(), data.c_str(), color);
assert(rendered);
CSDL_Ext::blitSurface(rendered, surface, pos);
SDL_FreeSurface(rendered);
}
}