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Variable fonts in standalone executable

This commit is contained in:
Chlumsky 2022-09-09 12:10:56 +02:00
parent 076433f5a6
commit 55cdafe55a
1 changed files with 33 additions and 5 deletions
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38
main.cpp
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@ -13,6 +13,7 @@
#include <cstdio>
#include <cmath>
#include <cstring>
#include <string>
#include "msdfgen.h"
#include "msdfgen-ext.h"
@ -135,6 +136,29 @@ static void parseColoring(Shape &shape, const char *edgeAssignment) {
}
}
static FontHandle * loadVarFont(FreetypeHandle *library, const char *filename) {
std::string buffer;
while (*filename && *filename != '?')
buffer.push_back(*filename++);
FontHandle *font = loadFont(library, buffer.c_str());
if (*filename++ == '?') {
do {
buffer.clear();
while (*filename && *filename != '=')
buffer.push_back(*filename++);
if (*filename == '=') {
double value = 0;
int skip = 0;
if (sscanf(++filename, "%lf%n", &value, &skip) == 1) {
setFontVariationAxis(library, font, buffer.c_str(), value);
filename += skip;
}
}
} while (*filename++ == '&');
}
return font;
}
template <int N>
static void invertColor(const BitmapRef<float, N> &bitmap) {
const float *end = bitmap.pixels+N*bitmap.width*bitmap.height;
@ -295,6 +319,8 @@ static const char *helpText =
"\tReads text shape description from the standard input.\n"
" -svg <filename.svg>\n"
"\tLoads the last vector path found in the specified SVG file.\n"
" -varfont <filename and variables> <character code>\n"
"\tLoads a single glyph from a variable font. Specify variable values as x.ttf?var1=0.5&var2=1\n"
"\n"
// Keep alphabetical order!
"OPTIONS\n"
@ -408,6 +434,7 @@ int main(int argc, const char * const *argv) {
NONE,
SVG,
FONT,
VAR_FONT,
DESCRIPTION_ARG,
DESCRIPTION_STDIN,
DESCRIPTION_FILE
@ -496,8 +523,8 @@ int main(int argc, const char * const *argv) {
argPos += 2;
continue;
}
ARG_CASE("-font", 2) {
inputType = FONT;
//ARG_CASE -font, -varfont
if (argPos+2 < argc && ((!strcmp(arg, "-font") && (inputType = FONT)) || (!strcmp(arg, "-varfont") && (inputType = VAR_FONT)))) {
input = argv[argPos+1];
const char *charArg = argv[argPos+2];
unsigned gi;
@ -840,12 +867,13 @@ int main(int argc, const char * const *argv) {
ABORT("Failed to load shape from SVG file.");
break;
}
case FONT: {
case FONT: case VAR_FONT: {
if (!glyphIndexSpecified && !unicode)
ABORT("No character specified! Use -font <file.ttf/otf> <character code>. Character code can be a Unicode index (65, 0x41), a character in apostrophes ('A'), or a glyph index prefixed by g (g36, g0x24).");
FreetypeHandle *ft = initializeFreetype();
if (!ft) return -1;
FontHandle *font = loadFont(ft, input);
if (!ft)
return -1;
FontHandle *font = inputType == VAR_FONT ? loadVarFont(ft, input) : loadFont(ft, input);
if (!font) {
deinitializeFreetype(ft);
ABORT("Failed to load font file.");