summaryrefslogtreecommitdiff
path: root/render/html_object.c
diff options
context:
space:
mode:
authorVincent Sanders <vince@netsurf-browser.org>2018-05-10 11:34:26 +0100
committerVincent Sanders <vince@kyllikki.org>2018-05-10 13:37:02 +0100
commit2a03ea30490892ac52b3da325ab78e1aa888f83e (patch)
treed041e4a2aab3b224ad41612d47ea2119895e27ac /render/html_object.c
parent1b892391d7859398c212b9fda5b532308fa6e8fd (diff)
downloadnetsurf-2a03ea30490892ac52b3da325ab78e1aa888f83e.tar.gz
netsurf-2a03ea30490892ac52b3da325ab78e1aa888f83e.tar.bz2
move html and text content handlers where they belong
Diffstat (limited to 'render/html_object.c')
-rw-r--r--render/html_object.c729
1 files changed, 0 insertions, 729 deletions
diff --git a/render/html_object.c b/render/html_object.c
deleted file mode 100644
index 74e4bf0f3..000000000
--- a/render/html_object.c
+++ /dev/null
@@ -1,729 +0,0 @@
-/*
- * Copyright 2013 Vincent Sanders <vince@netsurf-browser.org>
- *
- * 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
- * Processing for html content object operations.
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <stdint.h>
-#include <string.h>
-#include <strings.h>
-#include <stdlib.h>
-#include <nsutils/time.h>
-
-#include "utils/corestrings.h"
-#include "utils/config.h"
-#include "utils/log.h"
-#include "utils/nsoption.h"
-#include "netsurf/content.h"
-#include "netsurf/misc.h"
-#include "content/hlcache.h"
-#include "css/utils.h"
-#include "desktop/scrollbar.h"
-#include "desktop/gui_internal.h"
-
-#include "render/box.h"
-#include "render/html_internal.h"
-
-/* break reference loop */
-static void html_object_refresh(void *p);
-
-/**
- * Retrieve objects used by HTML document
- *
- * \param h Content to retrieve objects from
- * \param n Pointer to location to receive number of objects
- * \return Pointer to list of objects
- */
-struct content_html_object *html_get_objects(hlcache_handle *h, unsigned int *n)
-{
- html_content *c = (html_content *) hlcache_handle_get_content(h);
-
- assert(c != NULL);
- assert(n != NULL);
-
- *n = c->num_objects;
-
- return c->object_list;
-}
-
-/**
- * Handle object fetching or loading failure.
- *
- * \param box box containing object which failed to load
- * \param content document of type CONTENT_HTML
- * \param background the object was the background image for the box
- */
-
-static void
-html_object_failed(struct box *box, html_content *content, bool background)
-{
- /* Nothing to do */
- return;
-}
-
-/**
- * Update a box whose content has completed rendering.
- */
-
-static void
-html_object_done(struct box *box,
- hlcache_handle *object,
- bool background)
-{
- struct box *b;
-
- if (background) {
- box->background = object;
- return;
- }
-
- box->object = object;
-
- /* Normalise the box type, now it has been replaced. */
- switch (box->type) {
- case BOX_TABLE:
- box->type = BOX_BLOCK;
- break;
- default:
- /* TODO: Any other box types need mapping? */
- break;
- }
-
- if (!(box->flags & REPLACE_DIM)) {
- /* invalidate parent min, max widths */
- for (b = box; b; b = b->parent)
- b->max_width = UNKNOWN_MAX_WIDTH;
-
- /* delete any clones of this box */
- while (box->next && (box->next->flags & CLONE)) {
- /* box_free_box(box->next); */
- box->next = box->next->next;
- }
- }
-}
-
-/**
- * Callback for hlcache_handle_retrieve() for objects.
- */
-
-static nserror
-html_object_callback(hlcache_handle *object,
- const hlcache_event *event,
- void *pw)
-{
- struct content_html_object *o = pw;
- html_content *c = (html_content *) o->parent;
- int x, y;
- struct box *box;
-
- box = o->box;
- if (box == NULL &&
- event->type != CONTENT_MSG_ERROR &&
- event->type != CONTENT_MSG_ERRORCODE) {
- return NSERROR_OK;
- }
-
- switch (event->type) {
- case CONTENT_MSG_LOADING:
- if (c->base.status != CONTENT_STATUS_LOADING && c->bw != NULL)
- content_open(object,
- c->bw, &c->base,
- box->object_params);
- break;
-
- case CONTENT_MSG_READY:
- if (content_can_reformat(object)) {
- /* TODO: avoid knowledge of box internals here */
- content_reformat(object, false,
- box->max_width != UNKNOWN_MAX_WIDTH ?
- box->width : 0,
- box->max_width != UNKNOWN_MAX_WIDTH ?
- box->height : 0);
-
- /* Adjust parent content for new object size */
- html_object_done(box, object, o->background);
- if (c->base.status == CONTENT_STATUS_READY ||
- c->base.status == CONTENT_STATUS_DONE)
- content__reformat(&c->base, false,
- c->base.available_width,
- c->base.height);
- }
- break;
-
- case CONTENT_MSG_DONE:
- c->base.active--;
- NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-
- html_object_done(box, object, o->background);
-
- if (c->base.status != CONTENT_STATUS_LOADING &&
- box->flags & REPLACE_DIM) {
- union content_msg_data data;
-
- if (!box_visible(box))
- break;
-
- box_coords(box, &x, &y);
-
- data.redraw.x = x + box->padding[LEFT];
- data.redraw.y = y + box->padding[TOP];
- data.redraw.width = box->width;
- data.redraw.height = box->height;
- data.redraw.full_redraw = true;
-
- content_broadcast(&c->base, CONTENT_MSG_REDRAW, &data);
- }
- break;
-
- case CONTENT_MSG_ERRORCODE:
- case CONTENT_MSG_ERROR:
- hlcache_handle_release(object);
-
- o->content = NULL;
-
- if (box != NULL) {
- c->base.active--;
- NSLOG(netsurf, INFO, "%d fetches active",
- c->base.active);
-
- content_add_error(&c->base, "?", 0);
- html_object_failed(box, c, o->background);
- }
- break;
-
- case CONTENT_MSG_REDRAW:
- if (c->base.status != CONTENT_STATUS_LOADING) {
- union content_msg_data data = event->data;
-
- if (!box_visible(box))
- break;
-
- box_coords(box, &x, &y);
-
- if (object == box->background) {
- /* Redraw request is for background */
- css_fixed hpos = 0, vpos = 0;
- css_unit hunit = CSS_UNIT_PX;
- css_unit vunit = CSS_UNIT_PX;
- int width = box->padding[LEFT] + box->width +
- box->padding[RIGHT];
- int height = box->padding[TOP] + box->height +
- box->padding[BOTTOM];
- int t, h, l, w;
-
- /* Need to know background-position */
- css_computed_background_position(box->style,
- &hpos, &hunit, &vpos, &vunit);
-
- w = content_get_width(box->background);
- if (hunit == CSS_UNIT_PCT) {
- l = (width - w) * hpos / INTTOFIX(100);
- } else {
- l = FIXTOINT(nscss_len2px(&c->len_ctx,
- hpos, hunit,
- box->style));
- }
-
- h = content_get_height(box->background);
- if (vunit == CSS_UNIT_PCT) {
- t = (height - h) * vpos / INTTOFIX(100);
- } else {
- t = FIXTOINT(nscss_len2px(&c->len_ctx,
- vpos, vunit,
- box->style));
- }
-
- /* Redraw area depends on background-repeat */
- switch (css_computed_background_repeat(
- box->style)) {
- case CSS_BACKGROUND_REPEAT_REPEAT:
- data.redraw.x = 0;
- data.redraw.y = 0;
- data.redraw.width = box->width;
- data.redraw.height = box->height;
- break;
-
- case CSS_BACKGROUND_REPEAT_REPEAT_X:
- data.redraw.x = 0;
- data.redraw.y += t;
- data.redraw.width = box->width;
- break;
-
- case CSS_BACKGROUND_REPEAT_REPEAT_Y:
- data.redraw.x += l;
- data.redraw.y = 0;
- data.redraw.height = box->height;
- break;
-
- case CSS_BACKGROUND_REPEAT_NO_REPEAT:
- data.redraw.x += l;
- data.redraw.y += t;
- break;
-
- default:
- break;
- }
-
- data.redraw.object_width = box->width;
- data.redraw.object_height = box->height;
-
- /* Add offset to box */
- data.redraw.x += x;
- data.redraw.y += y;
- data.redraw.object_x += x;
- data.redraw.object_y += y;
-
- content_broadcast(&c->base,
- CONTENT_MSG_REDRAW, &data);
- break;
-
- } else {
- /* Non-background case */
- if (hlcache_handle_get_content(object) ==
- event->data.redraw.object) {
-
- int w = content_get_width(object);
- int h = content_get_height(object);
-
- if (w != 0) {
- data.redraw.x =
- data.redraw.x *
- box->width / w;
- data.redraw.width =
- data.redraw.width *
- box->width / w;
- }
-
- if (h != 0) {
- data.redraw.y =
- data.redraw.y *
- box->height / h;
- data.redraw.height =
- data.redraw.height *
- box->height / h;
- }
-
- data.redraw.object_width = box->width;
- data.redraw.object_height = box->height;
- }
-
- data.redraw.x += x + box->padding[LEFT];
- data.redraw.y += y + box->padding[TOP];
- data.redraw.object_x += x + box->padding[LEFT];
- data.redraw.object_y += y + box->padding[TOP];
- }
-
- content_broadcast(&c->base, CONTENT_MSG_REDRAW, &data);
- }
- break;
-
- case CONTENT_MSG_REFRESH:
- if (content_get_type(object) == CONTENT_HTML) {
- /* only for HTML objects */
- guit->misc->schedule(event->data.delay * 1000,
- html_object_refresh, o);
- }
-
- break;
-
- case CONTENT_MSG_LINK:
- /* Don't care about favicons that aren't on top level content */
- break;
-
- case CONTENT_MSG_GETCTX:
- *(event->data.jscontext) = NULL;
- break;
-
- case CONTENT_MSG_SCROLL:
- if (box->scroll_x != NULL)
- scrollbar_set(box->scroll_x, event->data.scroll.x0,
- false);
- if (box->scroll_y != NULL)
- scrollbar_set(box->scroll_y, event->data.scroll.y0,
- false);
- break;
-
- case CONTENT_MSG_DRAGSAVE:
- {
- union content_msg_data msg_data;
- if (event->data.dragsave.content == NULL)
- msg_data.dragsave.content = object;
- else
- msg_data.dragsave.content =
- event->data.dragsave.content;
-
- content_broadcast(&c->base, CONTENT_MSG_DRAGSAVE, &msg_data);
- }
- break;
-
- case CONTENT_MSG_SAVELINK:
- case CONTENT_MSG_POINTER:
- case CONTENT_MSG_SELECTMENU:
- case CONTENT_MSG_GADGETCLICK:
- /* These messages are for browser window layer.
- * we're not interested, so pass them on. */
- content_broadcast(&c->base, event->type, &event->data);
- break;
-
- case CONTENT_MSG_CARET:
- {
- union html_focus_owner focus_owner;
- focus_owner.content = box;
-
- switch (event->data.caret.type) {
- case CONTENT_CARET_REMOVE:
- case CONTENT_CARET_HIDE:
- html_set_focus(c, HTML_FOCUS_CONTENT, focus_owner,
- true, 0, 0, 0, NULL);
- break;
- case CONTENT_CARET_SET_POS:
- html_set_focus(c, HTML_FOCUS_CONTENT, focus_owner,
- false, event->data.caret.pos.x,
- event->data.caret.pos.y,
- event->data.caret.pos.height,
- event->data.caret.pos.clip);
- break;
- }
- }
- break;
-
- case CONTENT_MSG_DRAG:
- {
- html_drag_type drag_type = HTML_DRAG_NONE;
- union html_drag_owner drag_owner;
- drag_owner.content = box;
-
- switch (event->data.drag.type) {
- case CONTENT_DRAG_NONE:
- drag_type = HTML_DRAG_NONE;
- drag_owner.no_owner = true;
- break;
- case CONTENT_DRAG_SCROLL:
- drag_type = HTML_DRAG_CONTENT_SCROLL;
- break;
- case CONTENT_DRAG_SELECTION:
- drag_type = HTML_DRAG_CONTENT_SELECTION;
- break;
- }
- html_set_drag_type(c, drag_type, drag_owner,
- event->data.drag.rect);
- }
- break;
-
- case CONTENT_MSG_SELECTION:
- {
- html_selection_type sel_type;
- union html_selection_owner sel_owner;
-
- if (event->data.selection.selection) {
- sel_type = HTML_SELECTION_CONTENT;
- sel_owner.content = box;
- } else {
- sel_type = HTML_SELECTION_NONE;
- sel_owner.none = true;
- }
- html_set_selection(c, sel_type, sel_owner,
- event->data.selection.read_only);
- }
- break;
-
- default:
- break;
- }
-
- if (c->base.status == CONTENT_STATUS_READY &&
- c->base.active == 0 &&
- (event->type == CONTENT_MSG_LOADING ||
- event->type == CONTENT_MSG_DONE ||
- event->type == CONTENT_MSG_ERROR ||
- event->type == CONTENT_MSG_ERRORCODE)) {
- /* all objects have arrived */
- content__reformat(&c->base, false, c->base.available_width,
- c->base.height);
- content_set_done(&c->base);
- } else if (nsoption_bool(incremental_reflow) &&
- event->type == CONTENT_MSG_DONE &&
- box != NULL &&
- !(box->flags & REPLACE_DIM) &&
- (c->base.status == CONTENT_STATUS_READY ||
- c->base.status == CONTENT_STATUS_DONE)) {
- /* 1) the configuration option to reflow pages while
- * objects are fetched is set
- * 2) an object is newly fetched & converted,
- * 3) the box's dimensions need to change due to being replaced
- * 4) the object's parent HTML is ready for reformat,
- */
- uint64_t ms_now;
- nsu_getmonotonic_ms(&ms_now);
- if (ms_now > c->base.reformat_time) {
- /* The time since the previous reformat is
- * more than the configured minimum time
- * between reformats so reformat the page to
- * display newly fetched objects
- */
- content__reformat(&c->base,
- false,
- c->base.available_width,
- c->base.height);
- }
- }
-
- return NSERROR_OK;
-}
-
-/**
- * Start a fetch for an object required by a page, replacing an existing object.
- *
- * \param object Object to replace
- * \param url URL of object to fetch (copied)
- * \return true on success, false on memory exhaustion
- */
-
-static bool html_replace_object(struct content_html_object *object, nsurl *url)
-{
- html_content *c;
- hlcache_child_context child;
- html_content *page;
- nserror error;
-
- assert(object != NULL);
- assert(object->box != NULL);
-
- c = (html_content *) object->parent;
-
- child.charset = c->encoding;
- child.quirks = c->base.quirks;
-
- if (object->content != NULL) {
- /* remove existing object */
- if (content_get_status(object->content) != CONTENT_STATUS_DONE) {
- c->base.active--;
- NSLOG(netsurf, INFO, "%d fetches active",
- c->base.active);
- }
-
- hlcache_handle_release(object->content);
- object->content = NULL;
-
- object->box->object = NULL;
- }
-
- /* initialise fetch */
- error = hlcache_handle_retrieve(url, HLCACHE_RETRIEVE_SNIFF_TYPE,
- content_get_url(&c->base), NULL,
- html_object_callback, object, &child,
- object->permitted_types,
- &object->content);
-
- if (error != NSERROR_OK)
- return false;
-
- for (page = c; page != NULL; page = page->page) {
- page->base.active++;
- NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
-
- page->base.status = CONTENT_STATUS_READY;
- }
-
- return true;
-}
-
-/**
- * schedule callback for object refresh
- */
-
-static void html_object_refresh(void *p)
-{
- struct content_html_object *object = p;
- nsurl *refresh_url;
-
- assert(content_get_type(object->content) == CONTENT_HTML);
-
- refresh_url = content_get_refresh_url(object->content);
-
- /* Ignore if refresh URL has gone
- * (may happen if fetch errored) */
- if (refresh_url == NULL)
- return;
-
- content_invalidate_reuse_data(object->content);
-
- if (!html_replace_object(object, refresh_url)) {
- /** \todo handle memory exhaustion */
- }
-}
-
-nserror html_object_open_objects(html_content *html, struct browser_window *bw)
-{
- struct content_html_object *object, *next;
-
- for (object = html->object_list; object != NULL; object = next) {
- next = object->next;
-
- if (object->content == NULL || object->box == NULL)
- continue;
-
- if (content_get_type(object->content) == CONTENT_NONE)
- continue;
-
- content_open(object->content,
- bw,
- &html->base,
- object->box->object_params);
- }
- return NSERROR_OK;
-}
-
-nserror html_object_abort_objects(html_content *htmlc)
-{
- struct content_html_object *object;
-
- for (object = htmlc->object_list;
- object != NULL;
- object = object->next) {
- if (object->content == NULL)
- continue;
-
- switch (content_get_status(object->content)) {
- case CONTENT_STATUS_DONE:
- /* already loaded: do nothing */
- break;
-
- case CONTENT_STATUS_READY:
- hlcache_handle_abort(object->content);
- /* Active count will be updated when
- * html_object_callback receives
- * CONTENT_MSG_DONE from this object
- */
- break;
-
- default:
- hlcache_handle_abort(object->content);
- hlcache_handle_release(object->content);
- object->content = NULL;
- if (object->box != NULL) {
- htmlc->base.active--;
- NSLOG(netsurf, INFO, "%d fetches active",
- htmlc->base.active);
- }
- break;
-
- }
- }
-
- return NSERROR_OK;
-}
-
-nserror html_object_close_objects(html_content *html)
-{
- struct content_html_object *object, *next;
-
- for (object = html->object_list; object != NULL; object = next) {
- next = object->next;
-
- if (object->content == NULL || object->box == NULL)
- continue;
-
- if (content_get_type(object->content) == CONTENT_NONE)
- continue;
-
- if (content_get_type(object->content) == CONTENT_HTML) {
- guit->misc->schedule(-1, html_object_refresh, object);
- }
-
- content_close(object->content);
- }
- return NSERROR_OK;
-}
-
-nserror html_object_free_objects(html_content *html)
-{
- while (html->object_list != NULL) {
- struct content_html_object *victim = html->object_list;
-
- if (victim->content != NULL) {
- NSLOG(netsurf, INFO, "object %p", victim->content);
-
- if (content_get_type(victim->content) == CONTENT_HTML) {
- guit->misc->schedule(-1, html_object_refresh, victim);
- }
- hlcache_handle_release(victim->content);
- }
-
- html->object_list = victim->next;
- free(victim);
- }
- return NSERROR_OK;
-}
-
-
-
-/* exported interface documented in render/html_internal.h */
-bool html_fetch_object(html_content *c, nsurl *url, struct box *box,
- content_type permitted_types,
- int available_width, int available_height,
- bool background)
-{
- struct content_html_object *object;
- hlcache_child_context child;
- nserror error;
-
- /* If we've already been aborted, don't bother attempting the fetch */
- if (c->aborted)
- return true;
-
- child.charset = c->encoding;
- child.quirks = c->base.quirks;
-
- object = calloc(1, sizeof(struct content_html_object));
- if (object == NULL) {
- return false;
- }
-
- object->parent = (struct content *) c;
- object->next = NULL;
- object->content = NULL;
- object->box = box;
- object->permitted_types = permitted_types;
- object->background = background;
-
- error = hlcache_handle_retrieve(url,
- HLCACHE_RETRIEVE_SNIFF_TYPE,
- content_get_url(&c->base), NULL,
- html_object_callback, object, &child,
- object->permitted_types, &object->content);
- if (error != NSERROR_OK) {
- free(object);
- return error != NSERROR_NOMEM;
- }
-
- /* add to content object list */
- object->next = c->object_list;
- c->object_list = object;
-
- c->num_objects++;
- if (box != NULL) {
- c->base.active++;
- NSLOG(netsurf, INFO, "%d fetches active", c->base.active);
- }
-
- return true;
-}