X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=ttf2png.c;h=3685b5a106d9e3f9641051b13df4dfaa8ac5aeb1;hb=b8ace0a40f3cad1d0b56568c4ac61d63dbd190d9;hp=ebc953022e20178d35a5f001a1c87ff3a5cf9ad1;hpb=096d2b648330013d13d42cf3efe414f7860d6e77;p=ttf2png.git

diff --git a/ttf2png.c b/ttf2png.c
index ebc9530..3685b5a 100644
--- a/ttf2png.c
+++ b/ttf2png.c
@@ -362,14 +362,6 @@ void render_grid(Font *font, unsigned cellw, unsigned cellh, unsigned cpl, int s
 	unsigned first, last;
 	unsigned maxw = 0, maxh = 0;
 
-	for(i=1;; i<<=1)
-	{
-		first = font->glyphs[0].code&~(i-1);
-		last = first+i-1;
-		if(last>=font->glyphs[font->n_glyphs-1].code)
-			break;
-	}
-
 	for(i=0; i<font->n_glyphs; ++i)
 	{
 		int y;
@@ -410,21 +402,21 @@ void render_grid(Font *font, unsigned cellw, unsigned cellh, unsigned cpl, int s
 
 	if(cpl==0)
 	{
-		unsigned count = (seq ? font->n_glyphs : last-first+1);
 		for(i=1;; i<<=1)
 		{
 			cpl = i/cellw;
-			if(cpl>0 && (count+cpl-1)/cpl*cellh<=cpl*cellw)
+			if(cpl>0 && font->n_glyphs/cpl*cellh<=cpl*cellw)
 				break;
 		}
 	}
 
+	first = font->glyphs[0].code;
+	if(!seq)
+		first -= first%cpl;
+	last = font->glyphs[font->n_glyphs-1].code;
+
 	font->image.w = round_to_pot(cpl*cellw);
-	if(seq && font->n_glyphs<last-first+1)
-		font->image.h = (font->n_glyphs+cpl-1)/cpl*cellh;
-	else
-		font->image.h = (last-first+cpl)/cpl*cellh;
-	font->image.h = round_to_pot(font->image.h);
+	font->image.h = round_to_pot((last-first+cpl)/cpl*cellh);
 
 	font->image.data = (char *)malloc(font->image.w*font->image.h);
 	memset(font->image.data, 255, font->image.w*font->image.h);
@@ -466,7 +458,7 @@ void render_packed(Font *font)
 	unsigned i;
 	unsigned area = 0;
 	char     *used_glyphs;
-	char     *used_pixels;
+	unsigned *used_pixels;
 	unsigned cx = 0, cy;
 	unsigned used_h = 0;
 
@@ -483,8 +475,8 @@ void render_packed(Font *font)
 
 	font->image.data = (char *)malloc(font->image.w*font->image.h);
 	memset(font->image.data, 255, font->image.w*font->image.h);
-	used_pixels = (char *)malloc(font->image.w*font->image.h);
-	memset(used_pixels, 0, font->image.w*font->image.h);
+	used_pixels = (unsigned *)malloc(font->image.w*sizeof(unsigned));
+	memset(used_pixels, 0, font->image.w*sizeof(unsigned));
 	used_glyphs = (char *)malloc(font->n_glyphs);
 	memset(used_glyphs, 0, font->n_glyphs);
 
@@ -496,21 +488,18 @@ void render_packed(Font *font)
 		unsigned best_score = 0;
 		unsigned target_h = 0;
 
-		for(; (cx<font->image.w && used_pixels[cx+cy*font->image.w]); ++cx) ;
+		for(; (cx<font->image.w && used_pixels[cx]>cy); ++cx)
+			if(used_pixels[cx]-cy-1>target_h)
+				target_h = used_pixels[cx]-cy-1;
+
 		if(cx>=font->image.w)
 		{
 			cx = 0;
 			++cy;
 			continue;
 		}
-		for(w=0; (cx+w<font->image.w && !used_pixels[cx+w+cy*font->image.w]); ++w) ;
 
-		for(x=0; x<cx; ++x)
-		{
-			for(y=0; (cy+y+1<font->image.h && used_pixels[cx-x+(cy+y+1)*font->image.w]); ++y) ;
-			if(y>target_h)
-				target_h = y;
-		}
+		for(w=0; (cx+w<font->image.w && used_pixels[cx+w]<=cy); ++w) ;
 
 		for(i=0; i<font->n_glyphs; ++i)
 		{
@@ -551,11 +540,12 @@ void render_packed(Font *font)
 				continue;
 			font->image.data[cx+x+(cy+y)*font->image.w] = 255-glyph->image.data[x+y*glyph->image.w];
 		}
-		for(y=0; y<glyph->image.h+2; ++y) for(x=0; x<glyph->image.w+2; ++x)
+		for(x=0; x<glyph->image.w+2; ++x)
 		{
-			if(cx+x<1 || cx+x>font->image.w || cy+y<1 || cy+y>font->image.h)
+			if(cx+x<1 || cx+x>font->image.w)
 				continue;
-			used_pixels[cx+x-1+(cy+y-1)*font->image.w] = 1;
+			if(used_pixels[cx+x-1]<cy+glyph->image.h+1)
+				used_pixels[cx+x-1] = cy+glyph->image.h+1;
 		}
 
 		if(cy+glyph->image.h>used_h)