126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
/**
|
|
* Furnace Tracker - multi-system chiptune tracker
|
|
* Copyright (C) 2021-2025 tildearrow and contributors
|
|
*
|
|
* This program 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "gui.h"
|
|
#include <zlib.h>
|
|
|
|
#define FONT_READ_SIZE 262144
|
|
|
|
struct InflateBlock {
|
|
unsigned char* buf;
|
|
size_t len;
|
|
size_t blockSize;
|
|
InflateBlock(size_t s) {
|
|
buf=new unsigned char[s];
|
|
len=s;
|
|
blockSize=0;
|
|
}
|
|
~InflateBlock() {
|
|
delete[] buf;
|
|
len=0;
|
|
}
|
|
};
|
|
|
|
ImFont* FurnaceGUI::addFontZlib(const void* data, size_t len, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges) {
|
|
z_stream zl;
|
|
memset(&zl,0,sizeof(z_stream));
|
|
logV("addFontZlib...");
|
|
|
|
zl.avail_in=len;
|
|
zl.next_in=(Bytef*)data;
|
|
zl.zalloc=NULL;
|
|
zl.zfree=NULL;
|
|
zl.opaque=NULL;
|
|
|
|
int nextErr;
|
|
nextErr=inflateInit(&zl);
|
|
if (nextErr!=Z_OK) {
|
|
if (zl.msg==NULL) {
|
|
logD("zlib error: unknown! %d",nextErr);
|
|
} else {
|
|
logD("zlib error: %s",zl.msg);
|
|
}
|
|
inflateEnd(&zl);
|
|
return NULL;
|
|
}
|
|
|
|
std::vector<InflateBlock*> blocks;
|
|
while (true) {
|
|
InflateBlock* ib=new InflateBlock(FONT_READ_SIZE);
|
|
zl.next_out=ib->buf;
|
|
zl.avail_out=ib->len;
|
|
|
|
nextErr=inflate(&zl,Z_SYNC_FLUSH);
|
|
if (nextErr!=Z_OK && nextErr!=Z_STREAM_END) {
|
|
if (zl.msg==NULL) {
|
|
logD("zlib error: unknown error! %d",nextErr);
|
|
} else {
|
|
logD("zlib inflate: %s",zl.msg);
|
|
}
|
|
for (InflateBlock* i: blocks) delete i;
|
|
blocks.clear();
|
|
delete ib;
|
|
inflateEnd(&zl);
|
|
return NULL;
|
|
}
|
|
ib->blockSize=ib->len-zl.avail_out;
|
|
blocks.push_back(ib);
|
|
if (nextErr==Z_STREAM_END) {
|
|
break;
|
|
}
|
|
}
|
|
nextErr=inflateEnd(&zl);
|
|
if (nextErr!=Z_OK) {
|
|
if (zl.msg==NULL) {
|
|
logD("zlib end error: unknown error! %d",nextErr);
|
|
} else {
|
|
logD("zlib end: %s",zl.msg);
|
|
}
|
|
for (InflateBlock* i: blocks) delete i;
|
|
blocks.clear();
|
|
return NULL;
|
|
}
|
|
|
|
size_t finalSize=0;
|
|
size_t curSeek=0;
|
|
for (InflateBlock* i: blocks) {
|
|
finalSize+=i->blockSize;
|
|
}
|
|
if (finalSize<1) {
|
|
logD("compressed too small!");
|
|
lastError="file too small";
|
|
for (InflateBlock* i: blocks) delete i;
|
|
blocks.clear();
|
|
return NULL;
|
|
}
|
|
unsigned char* finalData=new unsigned char[finalSize];
|
|
for (InflateBlock* i: blocks) {
|
|
memcpy(&finalData[curSeek],i->buf,i->blockSize);
|
|
curSeek+=i->blockSize;
|
|
delete i;
|
|
}
|
|
blocks.clear();
|
|
len=finalSize;
|
|
|
|
ImFontConfig fontConfig=(font_cfg==NULL)?ImFontConfig():(*font_cfg);
|
|
fontConfig.FontDataOwnedByAtlas=true;
|
|
|
|
return ImGui::GetIO().Fonts->AddFontFromMemoryTTF(finalData,finalSize,size_pixels,&fontConfig,glyph_ranges);
|
|
}
|