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FontManager.cpp
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FontManager.cpp
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/*
* Copyright (C) 2018 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Me and My Shadow is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "FontManager.h"
#include "FileManager.h"
#include "TreeStorageNode.h"
#include "POASerializer.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <SDL_ttf_fontfallback.h>
FontManager* fontMgr = NULL;
FontManager::FontManager() {
}
FontManager::~FontManager() {
for (auto it = fonts.begin(); it != fonts.end(); ++it) {
for (auto font : it->second) {
if (font) TTF_CloseFont(font);
}
}
}
static TTF_Font* loadFont(const std::string& name, int size){
TTF_Font* tmpFont;
if (name.find('.') != std::string::npos) {
tmpFont = TTF_OpenFont((getDataPath() + "font/" + name).c_str(), size);
} else {
tmpFont = TTF_OpenFont((getDataPath() + "font/" + name + ".ttf").c_str(), size);
}
if (tmpFont) {
return tmpFont;
} else{
printf("ERROR: Unable to load font file '%s'!\n", name.c_str());
#if defined(ANDROID)
//Android has built-in DroidSansFallback.ttf. (?)
return TTF_OpenFont("/system/fonts/DroidSansFallback.ttf", size);
#else
return TTF_OpenFont((getDataPath() + "font/DroidSansFallback.ttf").c_str(), size);
#endif
}
}
void FontManager::loadFonts() {
if (!fonts.empty()) return;
TreeStorageNode root;
POASerializer serializer;
if (!serializer.loadNodeFromFile((getDataPath() + "font/fonts.list").c_str(), &root, true)) {
fprintf(stderr, "FATAL ERROR: Failed to load the font list!\n");
return;
}
for (auto node : root.subNodes) {
if (node->name == "font" && node->value.size() >= 3) {
if (fonts.find(node->value[0]) != fonts.end()) {
printf("WARNING: The font named '%s' already exists!\n", node->value[0].c_str());
continue;
}
const int size = atoi(node->value[2].c_str());
if (size <= 0) {
printf("FATAL ERROR: The font named '%s' has invalid size '%d'!\n", node->value[0].c_str(), size);
continue;
}
TTF_Font *mainFont = loadFont(node->value[1], size);
if (mainFont == NULL) {
printf("FATAL ERROR: Failed to load the main font file for font named '%s'!\n", node->value[0].c_str());
continue;
}
std::vector<TTF_Font*> &fontVector = fonts[node->value[0]];
fontVector.push_back(mainFont);
for (auto subnode : node->subNodes) {
if (subnode->name == "fallback" && subnode->value.size() >= 1) {
int newSize = size;
if (subnode->value.size() >= 2) {
if (subnode->value[1] == "relative" && subnode->value.size() >= 3) {
newSize += atoi(subnode->value[2].c_str());
} else if (subnode->value[1] == "scale" && subnode->value.size() >= 3) {
double scale = atof(subnode->value[2].c_str());
newSize = (int)floor(double(size) * scale + 0.5);
} else {
newSize = atoi(subnode->value[1].c_str());
}
}
if (newSize <= 0) {
printf("WARNING: Invalid font size '%d'!\n", newSize);
continue;
}
TTF_Font *fallbackFont = loadFont(subnode->value[0], newSize);
if (fallbackFont == NULL) continue;
fontVector.push_back(fallbackFont);
}
}
if (fontVector.size() > 1) {
TTF_SetFontFallback(mainFont, fontVector.size() - 1, &(fontVector[1]));
}
}
}
}
TTF_Font* FontManager::getFont(const std::string& name) {
auto it = fonts.find(name);
if (it == fonts.end() || it->second.empty() || it->second[0] == NULL) {
fprintf(stderr, "FATAL ERROR: Can't find or failed to load font named '%s'!\n", name.c_str());
return NULL;
}
return it->second[0];
}

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