X-Git-Url: http://git.asbjorn.biz/?p=swftools.git;a=blobdiff_plain;f=lib%2Ffilters%2Fremove_font_transforms.c;h=c94ee94976d73021731b71acf603df71a6ff8577;hp=a2d7c445b5dfb42b9ae576568e42c2f9263b3ff8;hb=a51d4f82e57c96baa125d0937870d1e4896d6ee3;hpb=7fb4a4ac393f19a0b8a8998a2f1deac88c97eda0

diff --git a/lib/filters/remove_font_transforms.c b/lib/filters/remove_font_transforms.c
index a2d7c44..c94ee94 100644
--- a/lib/filters/remove_font_transforms.c
+++ b/lib/filters/remove_font_transforms.c
@@ -99,22 +99,22 @@ void matrix_convert(gfxmatrix_t*in, const char*id, mymatrix_t*out, gfxmatrix_t*s
 {
     double l1 = sqrt(in->m00 * in->m00 + in->m01 * in->m01);
     double l2 = sqrt(in->m10 * in->m10 + in->m11 * in->m11);
-    double l = l1+l2;
+    double l = (l1+l2)/2.0;
     if(l < 1e-10) {
 	memset(out, 0, sizeof(*out));
 	return;
     }
     out->m00 = in->m00 / l;
-    out->m01 = in->m01 / l;
     out->m10 = in->m10 / l;
-    out->m11 = in->m11 / l;
+    out->m01 = -in->m01 / l;
+    out->m11 = -in->m11 / l;
     out->id = (char*)id;
 
     if(scalematrix) {
 	scalematrix->m00 = l;
 	scalematrix->m01 = 0;
 	scalematrix->m10 = 0;
-	scalematrix->m11 = l;
+	scalematrix->m11 = -l;
 	scalematrix->tx = in->tx;
 	scalematrix->ty = in->ty;
     }
@@ -129,6 +129,7 @@ typedef struct _transformedfont {
     gfxfont_t*font;
     mymatrix_t matrix;
     int*used;
+    double dx;
 } transformedfont_t;
 
 static transformedfont_t* transformedfont_new(gfxfont_t*orig, mymatrix_t*m)
@@ -136,7 +137,12 @@ static transformedfont_t* transformedfont_new(gfxfont_t*orig, mymatrix_t*m)
     transformedfont_t*f = rfx_calloc(sizeof(transformedfont_t));
     f->orig = orig;
     f->matrix = *m;
-    f->used = malloc(sizeof(f->used[0])*orig->num_glyphs);
+    f->used = rfx_calloc(sizeof(f->used[0])*orig->num_glyphs);
+    int t;
+    for(t=0;t<orig->num_glyphs;t++) {
+	if(orig->glyphs[t].unicode==32)
+	    f->used[t]=1; //always preserve the space char in fonts
+    }
     return f;
 }
 
@@ -144,7 +150,9 @@ static void pass1_drawchar(gfxfilter_t*f, gfxfont_t*font, int glyphnr, gfxcolor_
 {
     internal_t*i = (internal_t*)f->internal;
     mymatrix_t m;
-    matrix_convert(matrix, font->id, &m, 0);
+    if(!font->id) 
+	msg("<error> Font has no ID");
+    matrix_convert(matrix, font->id?font->id:"unknown", &m, 0);
     transformedfont_t*fd = dict_lookup(i->matrices, &m);
     if(!fd) {
 	fd = transformedfont_new(font, &m);
@@ -163,10 +171,10 @@ static void glyph_transform(gfxglyph_t*g, mymatrix_t*mm)
     m.m11 = mm->m11;
     m.tx = 0;
     m.ty = 0;
+    g->line = gfxline_clone(g->line);
     gfxline_transform(g->line, &m);
-    g->advance *= m.m00;
-    if(g->advance<0) 
-	g->advance = 0;
+    if(m.m00>0)
+	g->advance *= m.m00;
 }
 
 static gfxresult_t* pass1_finish(gfxfilter_t*f, gfxdevice_t*out)
@@ -195,11 +203,43 @@ static gfxresult_t* pass1_finish(gfxfilter_t*f, gfxdevice_t*out)
 		count++;
 	    }
 	}
+
+	/* adjust the origin so that every character is to the
+	   right of the origin */
+	gfxbbox_t total = {0,0,0,0};
+	double average_xmax = 0;
+	for(t=0;t<count;t++) {
+	    gfxline_t*line = font->glyphs[t].line;
+	    gfxbbox_t b = gfxline_getbbox(line);
+	    total = gfxbbox_expand_to_bbox(total, b);
+	}
+	if(count) 
+	    average_xmax /= count;
+
+	fd->dx = -total.xmin;
+
+	font->ascent = total.ymax;
+	font->descent = -total.ymin;
+
+	for(t=0;t<count;t++) {
+	    gfxline_t*line = font->glyphs[t].line;
+	    while(line) {
+		line->x += fd->dx;
+		line->sx += fd->dx;
+		line = line->next;
+	    }
+	}
 	gfxfont_fix_unicode(font);
     }
     return out->finish(out);
 }
 
+static void pass2_addfont(gfxfilter_t*f, gfxfont_t*font, gfxdevice_t*out)
+{
+    /* we throw away original fonts, and do the addfont() for the transformed
+       fonts in the first drawchar() */
+}
+
 static void pass2_drawchar(gfxfilter_t*f, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix, gfxdevice_t*out)
 {
     internal_t*i = (internal_t*)f->internal;
@@ -213,8 +253,9 @@ static void pass2_drawchar(gfxfilter_t*f, gfxfont_t*font, int glyphnr, gfxcolor_
 
     mymatrix_t m;
     gfxmatrix_t scalematrix;
-    matrix_convert(matrix, font->id, &m, &scalematrix);
+    matrix_convert(matrix, font->id?font->id:"unknown", &m, &scalematrix);
     transformedfont_t*d = dict_lookup(i->matrices, &m);
+    scalematrix.tx -= d->dx*scalematrix.m00;
     out->drawchar(out, d->font, d->used[glyphnr], color, &scalematrix);
 }
 
@@ -231,6 +272,7 @@ void gfxtwopassfilter_remove_font_transforms_init(gfxtwopassfilter_t*f)
     f->pass1.internal = i;
 
     f->pass2.name = "remove font transforms pass 2";
+    f->pass2.addfont = pass2_addfont;
     f->pass2.drawchar = pass2_drawchar;
     f->pass2.internal = i;