From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 3 May 2018 09:24:14 +0000 (+0300)
Subject: Support monochrome bitmaps
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=17b96c26c5624aba41eb1d11cb5d2bf2d05982f5;p=ttf2png.git

Support monochrome bitmaps
---

diff --git a/ttf2png.c b/ttf2png.c
index af9f56f..42125ad 100644
--- a/ttf2png.c
+++ b/ttf2png.c
@@ -594,9 +594,9 @@ int init_glyphs(Font *font, FT_Face face, const Range *range, bool autohinter)
 			printf(": glyph %u, size %dx%d\n", n, bmp->width, bmp->rows);
 		}
 
-		if(bmp->pixel_mode!=FT_PIXEL_MODE_GRAY)
+		if(bmp->pixel_mode!=FT_PIXEL_MODE_GRAY && bmp->pixel_mode!=FT_PIXEL_MODE_MONO)
 		{
-			fprintf(stderr, "Warning: Glyph %u skipped, not grayscale\n", n);
+			fprintf(stderr, "Warning: Glyph %u skipped, incompatible pixel mode\n", n);
 			continue;
 		}
 
@@ -652,8 +652,16 @@ int copy_bitmap(const FT_Bitmap *bmp, Image *image)
 
 	for(y=0; y<bmp->rows; ++y)
 	{
-		for(x=0; x<bmp->width; ++x)
-			dst[x] = src[x];
+		if(bmp->pixel_mode==FT_PIXEL_MODE_MONO)
+		{
+			for(x=0; x<bmp->width; ++x)
+				dst[x] = ((src[x/8]&(0x80>>(x%8))) ? 0xFF : 0x00);
+		}
+		else
+		{
+			for(x=0; x<bmp->width; ++x)
+				dst[x] = src[x];
+		}
 
 		src += bmp->pitch;
 		dst += image->w;