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/*
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Content for text/html (interface).
*
* These functions should in general be called via the content interface.
*/
#ifndef _NETSURF_RENDER_HTML_H_
#define _NETSURF_RENDER_HTML_H_
#include <stdbool.h>
#include <libxml/HTMLparser.h>
#include "content/content_type.h"
#include "css/css.h"
struct box;
struct rect;
struct browser_window;
struct content;
struct form_successful_control;
struct imagemap;
struct object_params;
struct plotters;
/* entries in stylesheet_content */
#define STYLESHEET_BASE 0 /* base style sheet */
#define STYLESHEET_ADBLOCK 1 /* adblocking stylesheet */
#define STYLESHEET_STYLE 2 /* <style> elements (not cached) */
#define STYLESHEET_START 3 /* start of document stylesheets */
extern char *default_stylesheet_url;
extern char *adblock_stylesheet_url;
struct frame_dimension {
float value;
enum {
FRAME_DIMENSION_PIXELS, /* '100', '200' */
FRAME_DIMENSION_PERCENT, /* '5%', '20%' */
FRAME_DIMENSION_RELATIVE /* '*', '2*' */
} unit;
};
typedef enum {
SCROLLING_AUTO,
SCROLLING_YES,
SCROLLING_NO
} frame_scrolling;
/** An object (<img>, <object>, etc.) in a CONTENT_HTML document. */
struct content_html_object {
struct content *content; /**< Content, or 0. */
struct box *box; /**< Node in box tree containing it. */
/** Pointer to array of permitted content_type, terminated by
* CONTENT_UNKNOWN, or 0 if any type is acceptable. */
const content_type *permitted_types;
bool background; /**< This object is a background image. */
};
/** Frame tree (<frameset>, <frame>) */
struct content_html_frames {
int cols; /** number of columns in frameset */
int rows; /** number of rows in frameset */
struct frame_dimension width; /** frame width */
struct frame_dimension height; /** frame width */
int margin_width; /** frame margin width */
int margin_height; /** frame margin height */
char *name; /** frame name (for targetting) */
char *url; /** frame url */
bool no_resize; /** frame is not resizable */
frame_scrolling scrolling; /** scrolling characteristics */
bool border; /** frame has a border */
colour border_colour; /** frame border colour */
struct content_html_frames *children; /** [cols * rows] children */
};
/** Inline frame list (<iframe>) */
struct content_html_iframe {
struct box *box;
int margin_width; /** frame margin width */
int margin_height; /** frame margin height */
char *name; /** frame name (for targetting) */
char *url; /** frame url */
frame_scrolling scrolling; /** scrolling characteristics */
bool border; /** frame has a border */
colour border_colour; /** frame border colour */
struct content_html_iframe *next;
};
/** Data specific to CONTENT_HTML. */
struct content_html_data {
htmlParserCtxt *parser; /**< HTML parser context. */
/** HTML parser encoding handler. */
xmlCharEncodingHandler *encoding_handler;
char *encoding; /**< Encoding of source, 0 if unknown. */
enum { ENCODING_SOURCE_HEADER, ENCODING_SOURCE_DETECTED,
ENCODING_SOURCE_META } encoding_source;
/**< Source of encoding information. */
bool getenc; /**< Need to get the encoding from the document, as it
* wasn't specified in the Content-Type header. */
char *base_url; /**< Base URL (may be a copy of content->url). */
char *base_target; /**< Base target */
struct box *layout; /**< Box tree, or 0. */
colour background_colour; /**< Document background colour. */
/** Number of entries in stylesheet_content. */
unsigned int stylesheet_count;
/** Stylesheets. Each may be 0. */
struct content **stylesheet_content;
struct css_style *style; /**< Base style. */
/** Working stylesheet. */
struct css_working_stylesheet *working_stylesheet;
/** Number of entries in object. */
unsigned int object_count;
/** Objects. Each may be 0. */
struct content_html_object *object;
/** Forms, in reverse order to document. */
struct form *forms;
/** Hash table of imagemaps. */
struct imagemap **imagemaps;
/** Browser window containing this document, or 0 if not open. */
struct browser_window *bw;
/** Frameset information */
struct content_html_frames *frameset;
/** Inline frame information */
struct content_html_iframe *iframe;
/** Content of type CONTENT_HTML containing this, or 0 if not an object
* within a page. */
struct content *page;
/** Index in page->data.html.object, or 0 if not an object. */
unsigned int index;
/** Box containing this, or 0 if not an object. */
struct box *box;
};
/** Render padding and margin box outlines in html_redraw(). */
extern bool html_redraw_debug;
bool html_create(struct content *c, const char *params[]);
bool html_process_data(struct content *c, char *data, unsigned int size);
bool html_convert(struct content *c, int width, int height);
void html_reformat(struct content *c, int width, int height);
void html_destroy(struct content *c);
bool html_fetch_object(struct content *c, char *url, struct box *box,
const content_type *permitted_types,
int available_width, int available_height,
bool background);
bool html_replace_object(struct content *c, unsigned int i, char *url,
char *post_urlenc,
struct form_successful_control *post_multipart);
void html_stop(struct content *c);
void html_open(struct content *c, struct browser_window *bw,
struct content *page, unsigned int index, struct box *box,
struct object_params *params);
void html_close(struct content *c);
/* in render/html_redraw.c */
bool html_redraw(struct content *c, int x, int y,
int width, int height,
int clip_x0, int clip_y0, int clip_x1, int clip_y1,
float scale, unsigned long background_colour);
/* redraw a short text string, complete with highlighting
(for selection/search) and ghost caret */
bool text_redraw(const char *utf8_text, size_t utf8_len,
size_t offset, bool space,
struct css_style *style,
int x, int y,
struct rect *clip,
int height,
float scale, colour current_background_color,
bool excluded);
#endif
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