335 lines
11 KiB
C
335 lines
11 KiB
C
/*
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* Copyright 2005-2007 James Bursa <bursa@users.sourceforge.net>
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* Copyright 2003 Philip Pemberton <philpem@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Content handling (interface).
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*
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* The content functions manipulate struct contents, which correspond to URLs.
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*/
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#ifndef _NETSURF_CONTENT_CONTENT_H_
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#define _NETSURF_CONTENT_CONTENT_H_
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/* Irritatingly this must come first, or odd include errors
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* will occur to do with setjmp.h.
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*/
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#ifdef WITH_PNG
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#include "image/png.h"
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#endif
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#include <stdint.h>
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#include <time.h>
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#include "utils/config.h"
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#include "content/content_type.h"
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#include "css/css.h"
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#include "render/html.h"
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#include "render/textplain.h"
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#ifdef WITH_JPEG
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#include "image/jpeg.h"
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#endif
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#ifdef WITH_GIF
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#include "image/gif.h"
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#endif
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#ifdef WITH_BMP
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#include "image/bmp.h"
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#include "image/ico.h"
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#endif
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#ifdef WITH_PLUGIN
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#include "riscos/plugin.h"
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#endif
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#ifdef WITH_MNG
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#include "image/mng.h"
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#endif
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#ifdef WITH_SPRITE
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#include "riscos/sprite.h"
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#endif
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#ifdef WITH_NSSPRITE
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#include "image/nssprite.h"
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#endif
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#ifdef WITH_DRAW
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#include "riscos/draw.h"
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#endif
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#ifdef WITH_ARTWORKS
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#include "riscos/artworks.h"
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#endif
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#ifdef WITH_NS_SVG
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#include "image/svg.h"
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#endif
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#ifdef WITH_RSVG
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#include "image/rsvg.h"
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#endif
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struct bitmap;
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struct box;
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struct browser_window;
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struct content;
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struct fetch;
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struct object_params;
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struct ssl_cert_info;
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/** Used in callbacks to indicate what has occurred. */
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typedef enum {
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CONTENT_MSG_LOADING, /**< fetching or converting */
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CONTENT_MSG_READY, /**< may be displayed */
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CONTENT_MSG_DONE, /**< finished */
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CONTENT_MSG_ERROR, /**< error occurred */
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CONTENT_MSG_STATUS, /**< new status string */
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CONTENT_MSG_REFORMAT, /**< content_reformat done */
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CONTENT_MSG_REDRAW, /**< needs redraw (eg. new animation frame) */
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CONTENT_MSG_NEWPTR, /**< structure has been replaced */
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CONTENT_MSG_REFRESH, /**< wants refresh */
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CONTENT_MSG_LAUNCH, /**< needs url launching in external program */
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#ifdef WITH_AUTH
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CONTENT_MSG_AUTH, /**< authentication required */
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#endif
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#ifdef WITH_SSL
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CONTENT_MSG_SSL /**< SSL cert verify failed */
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#endif
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} content_msg;
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/** Extra data for some content_msg messages. */
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union content_msg_data {
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const char *error; /**< Error message, for CONTENT_MSG_ERROR. */
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const char *new_url; /**< Replacement URL (or NULL if the same
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* as previous), for CONTENT_MSG_NEWPTR. */
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/** Area of content which needs redrawing, for CONTENT_MSG_REDRAW. */
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struct {
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float x, y, width, height;
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/** Redraw the area fully. If false, object must be set,
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* and only the object will be redrawn. */
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bool full_redraw;
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/** Object to redraw if full_redraw is false. */
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struct content *object;
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/** Coordinates to plot object at. */
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float object_x, object_y;
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/** Dimensions to plot object with. */
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float object_width, object_height;
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} redraw;
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const char *auth_realm; /**< Realm, for CONTENT_MSG_AUTH. */
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int delay; /**< Minimum delay, for CONTENT_MSG_REFRESH */
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const char *launch_url; /**< URL to launch, for CONTENT_MSG_LAUNCH */
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struct {
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/** Certificate chain (certs[0] == server) */
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const struct ssl_cert_info *certs;
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unsigned long num; /**< Number of certs in chain */
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} ssl;
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};
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struct cache_data {
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time_t req_time; /**< Time of request */
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time_t res_time; /**< Time of response */
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time_t date; /**< Date: response header */
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time_t expires; /**< Expires: response header */
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#define INVALID_AGE -1
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int age; /**< Age: response header */
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int max_age; /**< Max-age Cache-control parameter */
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bool no_cache; /**< no-cache Cache-control parameter */
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char *etag; /**< Etag: response header */
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time_t last_modified; /**< Last-Modified: response header */
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};
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/** Linked list of users of a content. */
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struct content_user
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{
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void (*callback)(content_msg msg, struct content *c, intptr_t p1,
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intptr_t p2, union content_msg_data data);
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intptr_t p1;
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intptr_t p2;
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bool stop;
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struct content_user *next;
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};
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/** Corresponds to a single URL. */
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struct content {
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char *url; /**< URL, in standard form as from url_join. */
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content_type type; /**< Type of content. */
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char *mime_type; /**< Original MIME type of data, or 0. */
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enum {
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CONTENT_STATUS_TYPE_UNKNOWN, /**< Type not yet known. */
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CONTENT_STATUS_LOADING, /**< Content is being fetched or
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converted and is not safe to display. */
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CONTENT_STATUS_READY, /**< Some parts of content still being
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loaded, but can be displayed. */
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CONTENT_STATUS_DONE, /**< All finished. */
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CONTENT_STATUS_ERROR /**< Error occurred, content will be
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destroyed imminently. */
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} status; /**< Current status. */
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int width, height; /**< Dimensions, if applicable. */
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int available_width; /**< Available width (eg window width). */
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/** Data dependent on type. */
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union {
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struct content_html_data html;
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struct content_textplain_data textplain;
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struct content_css_data css;
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#ifdef WITH_JPEG
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struct content_jpeg_data jpeg;
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#endif
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#ifdef WITH_GIF
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struct content_gif_data gif;
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#endif
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#ifdef WITH_BMP
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struct content_bmp_data bmp;
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struct content_ico_data ico;
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#endif
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#ifdef WITH_MNG
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struct content_mng_data mng;
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#endif
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#ifdef WITH_SPRITE
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struct content_sprite_data sprite;
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#endif
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#ifdef WITH_NSSPRITE
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struct content_nssprite_data nssprite;
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#endif
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#ifdef WITH_DRAW
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struct content_draw_data draw;
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#endif
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#ifdef WITH_PLUGIN
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struct content_plugin_data plugin;
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#endif
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#ifdef WITH_ARTWORKS
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struct content_artworks_data artworks;
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#endif
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#ifdef WITH_NS_SVG
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struct content_svg_data svg;
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#endif
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#ifdef WITH_RSVG
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struct content_rsvg_data rsvg;
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#endif
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#ifdef WITH_PNG
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struct content_png_data png;
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#endif
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} data;
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/**< URL for refresh request, in standard form as from url_join. */
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char *refresh;
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/** Bitmap, for various image contents. */
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struct bitmap *bitmap;
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/** This content may be given to new users. Indicates that the content
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* was fetched using a simple GET, has not expired, and may be
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* shared between users. */
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bool fresh;
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struct cache_data cache_data; /**< Cache control data */
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unsigned int time; /**< Creation time, if TYPE_UNKNOWN,
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LOADING or READY,
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otherwise total time. */
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unsigned int reformat_time; /**< Earliest time to attempt a
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period reflow while fetching a
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page's objects. */
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unsigned int size; /**< Estimated size of all data
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associated with this content, except
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alloced as talloc children of this. */
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off_t talloc_size; /**< Used by content_clean() */
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char *title; /**< Title for browser window. */
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unsigned int active; /**< Number of child fetches or
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conversions currently in progress. */
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struct content_user *user_list; /**< List of users. */
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char status_message[120]; /**< Full text for status bar. */
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char sub_status[80]; /**< Status of content. */
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/** Content is being processed: data structures may be inconsistent
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* and content must not be redrawn or modified. */
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bool locked;
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struct fetch *fetch; /**< Associated fetch, or 0. */
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char *source_data; /**< Source data, as received. */
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unsigned long source_size; /**< Amount of data fetched so far. */
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unsigned long source_allocated; /**< Amount of space allocated so far. */
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unsigned long total_size; /**< Total data size, 0 if unknown. */
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long http_code; /**< HTTP status code, 0 if not HTTP. */
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bool no_error_pages; /**< Used by fetchcache(). */
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bool download; /**< Used by fetchcache(). */
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unsigned int redirect_count; /**< Used by fetchcache(). */
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/** Array of first n rendering errors or warnings. */
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struct {
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const char *token;
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unsigned int line; /**< Line no, 0 if not applicable. */
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} error_list[40];
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unsigned int error_count; /**< Number of valid error entries. */
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struct content *prev; /**< Previous in global content list. */
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struct content *next; /**< Next in global content list. */
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};
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extern struct content *content_list;
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extern const char * const content_type_name[];
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extern const char * const content_status_name[];
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content_type content_lookup(const char *mime_type);
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struct content * content_create(const char *url);
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struct content * content_get(const char *url);
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struct content * content_get_ready(const char *url);
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bool content_can_reformat(struct content *c);
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bool content_set_type(struct content *c, content_type type,
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const char *mime_type, const char *params[]);
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void content_set_status(struct content *c, const char *status_message, ...);
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bool content_process_data(struct content *c, const char *data,
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unsigned int size);
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void content_convert(struct content *c, int width, int height);
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void content_set_done(struct content *c);
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void content_reformat(struct content *c, int width, int height);
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void content_clean(void);
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void content_reset(struct content *c);
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void content_quit(void);
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bool content_redraw(struct content *c, int x, int y,
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int width, int height,
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int clip_x0, int clip_y0, int clip_x1, int clip_y1,
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float scale, colour background_colour);
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bool content_redraw_tiled(struct content *c, int x, int y,
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int width, int height,
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int clip_x0, int clip_y0, int clip_x1, int clip_y1,
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float scale, colour background_colour,
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bool repeat_x, bool repeat_y);
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bool content_add_user(struct content *c,
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void (*callback)(content_msg msg, struct content *c,
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intptr_t p1, intptr_t p2, union content_msg_data data),
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intptr_t p1, intptr_t p2);
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struct content_user * content_find_user(struct content *c,
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void (*callback)(content_msg msg, struct content *c,
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intptr_t p1, intptr_t p2, union content_msg_data data),
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intptr_t p1, intptr_t p2);
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void content_remove_user(struct content *c,
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void (*callback)(content_msg msg, struct content *c,
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intptr_t p1, intptr_t p2, union content_msg_data data),
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intptr_t p1, intptr_t p2);
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void content_broadcast(struct content *c, content_msg msg,
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union content_msg_data data);
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void content_stop(struct content *c,
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void (*callback)(content_msg msg, struct content *c,
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intptr_t p1, intptr_t p2, union content_msg_data data),
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intptr_t p1, intptr_t p2);
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void content_open(struct content *c, struct browser_window *bw,
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struct content *page, unsigned int index, struct box *box,
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struct object_params *params);
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void content_close(struct content *c);
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void content_add_error(struct content *c, const char *token,
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unsigned int line);
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#endif
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