From f19daf828bd69fd0d78657208b56b44fa707d065 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Fri, 17 Feb 2017 13:13:35 +0100
Subject: Add fz_font_is_bold and italic functions. Use them for svg output.

---
 source/fitz/font.c         | 20 ++++++++++++++++++++
 source/fitz/stext-output.c | 26 ++------------------------
 source/fitz/svg-device.c   | 21 ++++++++++++++++++++-
 3 files changed, 42 insertions(+), 25 deletions(-)

(limited to 'source/fitz')

diff --git a/source/fitz/font.c b/source/fitz/font.c
index 9a594cff..31877d67 100644
--- a/source/fitz/font.c
+++ b/source/fitz/font.c
@@ -1570,6 +1570,26 @@ fz_encode_character_with_fallback(fz_context *ctx, fz_font *user_font, int unico
 	return *out_font = user_font, 0;
 }
 
+int fz_font_is_bold(fz_context *ctx, fz_font *font)
+{
+	return font ? font->flags.is_bold : 0;
+}
+
+int fz_font_is_italic(fz_context *ctx, fz_font *font)
+{
+	return font ? font->flags.is_italic : 0;
+}
+
+int fz_font_is_serif(fz_context *ctx, fz_font *font)
+{
+	return font ? font->flags.is_serif : 0;
+}
+
+int fz_font_is_monospaced(fz_context *ctx, fz_font *font)
+{
+	return font ? font->flags.is_mono : 0;
+}
+
 const char *fz_font_name(fz_context *ctx, fz_font *font)
 {
 	return font ? font->name : "";
diff --git a/source/fitz/stext-output.c b/source/fitz/stext-output.c
index d671288f..09b18db8 100644
--- a/source/fitz/stext-output.c
+++ b/source/fitz/stext-output.c
@@ -8,28 +8,6 @@
 
 /* XML, HTML and plain-text output */
 
-static int font_is_bold(fz_context *ctx, fz_font *font)
-{
-	FT_Face face = fz_font_ft_face(ctx, font);
-	if (face && (face->style_flags & FT_STYLE_FLAG_BOLD))
-		return 1;
-	if (strstr(fz_font_name(ctx, font), "Bold"))
-		return 1;
-	return 0;
-}
-
-static int font_is_italic(fz_context *ctx, fz_font *font)
-{
-	FT_Face face = fz_font_ft_face(ctx, font);
-	const char *name;
-	if (face && (face->style_flags & FT_STYLE_FLAG_ITALIC))
-		return 1;
-	name = fz_font_name(ctx, font);
-	if (strstr(name, "Italic") || strstr(name, "Oblique"))
-		return 1;
-	return 0;
-}
-
 static void
 fz_print_style_begin(fz_context *ctx, fz_output *out, fz_stext_style *style)
 {
@@ -60,9 +38,9 @@ fz_print_style(fz_context *ctx, fz_output *out, fz_stext_style *style)
 	s = s ? s + 1 : name;
 	fz_printf(ctx, out, "span.s%d{font-family:\"%s\";font-size:%gpt;",
 		style->id, s, style->size);
-	if (font_is_italic(ctx, style->font))
+	if (fz_font_is_italic(ctx, style->font))
 		fz_printf(ctx, out, "font-style:italic;");
-	if (font_is_bold(ctx, style->font))
+	if (fz_font_is_bold(ctx, style->font))
 		fz_printf(ctx, out, "font-weight:bold;");
 	fz_printf(ctx, out, "}\n");
 }
diff --git a/source/fitz/svg-device.c b/source/fitz/svg-device.c
index bf2a2605..8a69d223 100644
--- a/source/fitz/svg-device.c
+++ b/source/fitz/svg-device.c
@@ -255,6 +255,17 @@ is_xml_wspace(int c)
 		c == 0x20);
 }
 
+static void
+svg_font_family(fz_context *ctx, char buf[], int size, const char *name)
+{
+	/* Remove "ABCDEF+" prefix and "-Bold" suffix. */
+	char *p = strchr(name, '+');
+	if (p) fz_strlcpy(buf, p+1, size);
+	else fz_strlcpy(buf, name, size);
+	p = strrchr(buf, '-');
+	if (p) *p = 0;
+}
+
 static void
 svg_dev_text_span(fz_context *ctx, svg_device *sdev, const fz_matrix *ctm, const fz_text_span *span)
 {
@@ -265,6 +276,8 @@ svg_dev_text_span(fz_context *ctx, svg_device *sdev, const fz_matrix *ctm, const
 	fz_matrix local_trm;
 	float size;
 	int start, is_wspace, was_wspace;
+	char font_family[100];
+	int is_bold, is_italic;
 
 	/* Rely on the fact that trm.{e,f} == 0 */
 	size = fz_matrix_expansion(&span->trm);
@@ -277,10 +290,16 @@ svg_dev_text_span(fz_context *ctx, svg_device *sdev, const fz_matrix *ctm, const
 	fz_invert_matrix(&inverse, &local_trm);
 	fz_concat(&local_trm, &local_trm, ctm);
 
+	svg_font_family(ctx, font_family, sizeof font_family, fz_font_name(ctx, span->font));
+	is_bold = fz_font_is_bold(ctx, span->font);
+	is_italic = fz_font_is_italic(ctx, span->font);
+
 	fz_printf(ctx, out, " transform=\"matrix(%g,%g,%g,%g,%g,%g)\"",
 			local_trm.a, local_trm.b, local_trm.c, local_trm.d, local_trm.e, local_trm.f);
 	fz_printf(ctx, out, " font-size=\"%g\"", size);
-	fz_printf(ctx, out, " font-family=\"%s\"", fz_font_name(ctx, span->font));
+	fz_printf(ctx, out, " font-family=\"%s\"", font_family);
+	if (is_bold) fz_printf(ctx, out, " font-weight=\"bold\"");
+	if (is_italic) fz_printf(ctx, out, " font-style=\"italic\"");
 
 	/* Leading (and repeated) whitespace presents a problem for SVG
 	 * text, so elide it here. */
-- 
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