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tools: small updates to fontsample

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This commit is contained in:
Rasmus Andersson 2019-08-02 08:53:21 -07:00
parent a7def52928
commit 862cd438ed
2 changed files with 36 additions and 11 deletions
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misc/tools/fontsample/fontsample
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misc/tools/fontsample/fontsample.mm
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@ -9,6 +9,8 @@ static const char* prog = "?";
static struct Options {
NSString* output = nil;
CGFloat size = 96;
size_t width = 0;
size_t height = 0;
NSString* text = @"Rags78 **A**";
}options{};
@ -19,6 +21,8 @@ static const char usagetemplate[] = ""
" -h, -help Show usage and exit.\n"
" -z, -size <size> Font size to render. Defaults to %g.\n"
" -t, -text <text> Text line to render. Defaults to \"%s\".\n"
" -width <pixels> Make the image <pixels> wide (automatic if not set)\n"
" -height <pixels> Make the image <pixels> tall (automatic if not set)\n"
" -o <file> Write output to <file> instead of default filename.\n"
" Defaults to <fontfile>.pdf. If the provided filename\n"
" ends with \".png\" a PNG is written instead of a PDF.\n"
@ -71,14 +75,20 @@ void draw(CGContextRef ctx,
CTLineRef textLine,
CGFloat width,
CGFloat height,
CGFloat descent)
CGFloat descent,
CGFloat textWidth,
CGFloat textHeight)
{
// white background
CGContextSetRGBFillColor(ctx, 1.0, 1.0, 1.0, 1.0);
CGContextFillRect(ctx, {{0,0},{width,height}});
// CGContextSetRGBFillColor(ctx, 1.0, 1.0, 1.0, 1.0);
// CGContextFillRect(ctx, {{0,0},{width,height}});
// center text
CGFloat x = ceilf((width - textWidth) / 2);
CGFloat y = descent + ceilf((height - textHeight) / 2);
// draw text
CGContextSetTextPosition(ctx, 0, descent);
CGContextSetTextPosition(ctx, x, y);
CTLineDraw(textLine, ctx);
}
@ -89,6 +99,7 @@ void makePDF(CTLineRef textLine,
CGFloat descent,
NSString* filename)
{
// TODO: read and use options.width and options.height
CFMutableDataRef consumerData = CFDataCreateMutable(kCFAllocatorDefault, 0);
CGDataConsumerRef contextConsumer = CGDataConsumerCreateWithCFData(consumerData);
assert(contextConsumer);
@ -97,7 +108,7 @@ void makePDF(CTLineRef textLine,
assert(ctx);
CGPDFContextBeginPage(ctx, nil);
draw(ctx, textLine, width, height, descent);
draw(ctx, textLine, width, height, descent, width, height);
// CGContextDrawPDFPage(ctx, page);
CGPDFContextEndPage(ctx);
@ -135,7 +146,13 @@ void makePNG(CTLineRef textLine,
NSString* filename)
{
size_t widthz = (size_t)ceilf(width);
size_t heightz = (size_t)ceilf(height);
size_t heightz = (size_t)ceilf(height * 1.2); // 120% to make sure we don't clip
if (options.width > 0) {
widthz = options.width;
}
if (options.height > 0) {
heightz = options.height;
}
void* data = malloc(widthz * heightz * 4);
@ -145,7 +162,7 @@ void makePNG(CTLineRef textLine,
CGContextRef ctx = CGBitmapContextCreate(data, widthz, heightz, 8, widthz*4, space, bitmapInfo);
CGColorSpaceRelease(space);
draw(ctx, textLine, (CGFloat)widthz, (CGFloat)heightz, descent);
draw(ctx, textLine, (CGFloat)widthz, (CGFloat)heightz, descent, width, height);
CGImageRef imageRef = CGBitmapContextCreateImage(ctx);
writePNG(imageRef, filename);
@ -157,8 +174,6 @@ void makePNG(CTLineRef textLine,
void pdfmake(NSString* fontfile) {
NSString* text = @"Rags78 **A**";
NSString* outfile = options.output;
if (outfile == nil) {
// default to fontfile.pdf
@ -168,7 +183,7 @@ void pdfmake(NSString* fontfile) {
// Create an attributed string with string and font information
CTFontRef font = loadFont(fontfile, options.size);
CTLineRef textLine = createTextLine(font, text);
CTLineRef textLine = createTextLine(font, options.text);
if (!textLine) {
fprintf(stderr, "%s: invalid sample text\n", prog);
exit(1);
@ -177,7 +192,7 @@ void pdfmake(NSString* fontfile) {
// get font metrics
CGFloat ascent, descent, leading;
CGFloat width = CTLineGetTypographicBounds(textLine, &ascent, &descent, &leading);
CGFloat height = ascent + descent;
CGFloat height = ascent + descent + leading;
printf("write %s\n", outfile.UTF8String);
if ([outfile.pathExtension.lowercaseString isEqualToString:@"png"]) {
@ -227,6 +242,16 @@ NSMutableArray<NSString*>* parseargs(int argc, const char * argv[]) {
auto val = getargval(arg, i++, argc, argv);
options.output = [NSString stringWithUTF8String:val];
} else if (strcmp(arg, "-width") == 0) {
auto val = getargval(arg, i++, argc, argv);
char* endptr = NULL;
options.width = (size_t)strtoull((const char*)val, &endptr, 10);
} else if (strcmp(arg, "-height") == 0) {
auto val = getargval(arg, i++, argc, argv);
char* endptr = NULL;
options.height = (size_t)strtoull((const char*)val, &endptr, 10);
} else if (strcmp(arg, "-z") == 0 || strcmp(arg, "-size") == 0) {
auto val = getargval(arg, i++, argc, argv);
auto f = atof(val);