2 files changed, 191 insertions, 0 deletions

diff --git a/include/mupdf/fitz/document.h b/include/mupdf/fitz/document.h
index f6646170..d19b3661 100644
--- a/include/mupdf/fitz/document.h
+++ b/include/mupdf/fitz/document.h
@@ -86,6 +86,8 @@ extern fz_document_handler xps_document_handler;
 extern fz_document_handler cbz_document_handler;
 extern fz_document_handler img_document_handler;
 extern fz_document_handler tiff_document_handler;
+extern fz_document_handler html_document_handler;
+extern fz_document_handler epub_document_handler;
 
 void fz_register_document_handler(fz_context *ctx, const fz_document_handler *handler);
 
diff --git a/include/mupdf/html.h b/include/mupdf/html.h
new file mode 100644
index 00000000..8003b83d
--- /dev/null
+++ b/include/mupdf/html.h
@@ -0,0 +1,189 @@
+#ifndef MUPDF_HTML_H
+#define MUPDF_HTML_H
+
+#include "mupdf/fitz.h"
+
+typedef struct fz_html_font_set_s fz_html_font_set;
+typedef struct fz_html_s fz_html;
+typedef struct fz_html_flow_s fz_html_flow;
+
+typedef struct fz_css_rule_s fz_css_rule;
+typedef struct fz_css_match_s fz_css_match;
+typedef struct fz_css_style_s fz_css_style;
+
+typedef struct fz_css_selector_s fz_css_selector;
+typedef struct fz_css_condition_s fz_css_condition;
+typedef struct fz_css_property_s fz_css_property;
+typedef struct fz_css_value_s fz_css_value;
+typedef struct fz_css_number_s fz_css_number;
+typedef struct fz_css_color_s fz_css_color;
+
+struct fz_html_font_set_s
+{
+	fz_font *fonts[16];
+};
+
+enum
+{
+	CSS_KEYWORD = 256,
+	CSS_STRING,
+	CSS_NUMBER,
+	CSS_LENGTH,
+	CSS_PERCENT,
+	CSS_COLOR,
+	CSS_URI,
+};
+
+struct fz_css_rule_s
+{
+	fz_css_selector *selector;
+	fz_css_property *declaration;
+	fz_css_property *garbage; /* for freeing inline style attributes at the end */
+	fz_css_rule *next;
+};
+
+struct fz_css_selector_s
+{
+	char *name;
+	int combine;
+	fz_css_condition *cond;
+	fz_css_selector *left;
+	fz_css_selector *right;
+	fz_css_selector *next;
+};
+
+struct fz_css_condition_s
+{
+	int type;
+	char *key;
+	char *val;
+	fz_css_condition *next;
+};
+
+struct fz_css_property_s
+{
+	char *name;
+	fz_css_value *value;
+	int spec;
+	fz_css_property *next;
+};
+
+struct fz_css_value_s
+{
+	int type;
+	char *data;
+	fz_css_value *args; /* function arguments */
+	fz_css_value *next;
+};
+
+struct fz_css_match_s
+{
+	fz_css_match *up;
+	int count;
+	struct {
+		const char *name; /* not owned */
+		fz_css_value *value; /* not owned */
+		int spec;
+	} prop[64];
+};
+
+enum { DIS_NONE, DIS_BLOCK, DIS_INLINE, DIS_LIST_ITEM };
+enum { POS_STATIC, POS_RELATIVE, POS_ABSOLUTE, POS_FIXED };
+enum { WS_NORMAL, WS_PRE, WS_NOWRAP, WS_PRE_WRAP, WS_PRE_LINE };
+enum { TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY };
+enum { VA_BASELINE, VA_SUB, VA_SUPER, VA_TOP, VA_BOTTOM };
+enum { BS_NONE, BS_SOLID };
+
+enum { N_NUMBER='p', N_SCALE='m', N_PERCENT='%' };
+
+struct fz_css_number_s
+{
+	float value;
+	int unit;
+};
+
+struct fz_css_color_s
+{
+	unsigned char r, g, b, a;
+};
+
+struct fz_css_style_s
+{
+	fz_css_number font_size;
+	fz_css_number margin[4];
+	fz_css_number padding[4];
+	fz_css_number border_width[4];
+	fz_css_number text_indent;
+	int white_space;
+	int text_align;
+	int vertical_align;
+	int border_style;
+	fz_css_number line_height;
+	fz_css_color background_color;
+	fz_css_color border_color;
+	fz_css_color color;
+	fz_font *font;
+};
+
+enum
+{
+	BOX_BLOCK,	/* block-level: contains block, break, and flow boxes */
+	BOX_BREAK,	/* block-level: empty <br> tag boxes */
+	BOX_FLOW,	/* block-level: contains only inline boxes */
+	BOX_INLINE,	/* inline-level: contains only inline boxes */
+};
+
+struct fz_html_s
+{
+	int type;
+	float x, y, w, h; /* content */
+	float padding[4];
+	float margin[4];
+	float border[4];
+	fz_html *up, *down, *last, *next;
+	fz_html_flow *flow_head, **flow_tail;
+	fz_css_style style;
+	int is_first_flow; /* for text-indent */
+};
+
+enum
+{
+	FLOW_WORD,
+	FLOW_GLUE,
+	FLOW_IMAGE,
+};
+
+struct fz_html_flow_s
+{
+	int type;
+	float x, y, w, h, em;
+	fz_css_style *style;
+	char *text, *broken_text;
+	fz_image *image;
+	fz_html_flow *next;
+};
+
+fz_css_rule *fz_parse_css(fz_context *ctx, fz_css_rule *chain, const char *source, const char *file);
+fz_css_property *fz_parse_css_properties(fz_context *ctx, const char *source);
+void fz_drop_css(fz_context *ctx, fz_css_rule *rule);
+
+void fz_match_css(fz_context *ctx, fz_css_match *match, fz_css_rule *rule, fz_xml *node);
+
+int fz_get_css_match_display(fz_css_match *node);
+void fz_default_css_style(fz_context *ctx, fz_css_style *style);
+void fz_apply_css_style(fz_context *ctx, fz_html_font_set *set, fz_css_style *style, fz_css_match *match);
+
+float fz_from_css_number(fz_css_number, float em, float width);
+float fz_from_css_number_scale(fz_css_number number, float scale, float em, float width);
+
+fz_html_font_set *fz_new_html_font_set(fz_context *ctx);
+fz_font *fz_load_html_font(fz_context *ctx, fz_html_font_set *set,
+	const char *family, const char *variant, const char *style, const char *weight);
+void fz_drop_html_font_set(fz_context *ctx, fz_html_font_set *htx);
+
+fz_html *fz_parse_html(fz_context *ctx, fz_html_font_set *htx, fz_archive *zip, const char *base_uri, fz_buffer *buf, const char *user_css);
+void fz_layout_html(fz_context *ctx, fz_html *box, float w, float h, float em);
+void fz_draw_html(fz_context *ctx, fz_html *box, float page_top, float page_bot, fz_device *dev, const fz_matrix *ctm);
+void fz_drop_html(fz_context *ctx, fz_html *box);
+
+#endif