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netsurf/desktop/browser.c
James Bursa 24fb50b120 [project @ 2004-05-07 19:14:54 by bursa] 
Implement multitasking warning dialog. Warn user if resolvers not set.

svn path=/import/netsurf/; revision=841
2004-05-07 19:14:54 +00:00

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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*/
/** \file
* Browser window creation and manipulation (implementation).
*/
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "netsurf/utils/config.h"
#include "netsurf/content/fetch.h"
#include "netsurf/content/fetchcache.h"
#include "netsurf/css/css.h"
#ifdef WITH_AUTH
#include "netsurf/desktop/401login.h"
#endif
#include "netsurf/desktop/browser.h"
#include "netsurf/desktop/gui.h"
#include "netsurf/desktop/imagemap.h"
#include "netsurf/render/box.h"
#include "netsurf/render/font.h"
#include "netsurf/render/form.h"
#include "netsurf/render/layout.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/messages.h"
#include "netsurf/utils/url.h"
#include "netsurf/utils/utils.h"
static void browser_window_callback(content_msg msg, struct content *c,
void *p1, void *p2, union content_msg_data data);
static void browser_window_convert_to_download(struct browser_window *bw,
content_msg msg);
static void browser_window_start_throbber(struct browser_window *bw);
static void browser_window_stop_throbber(struct browser_window *bw);
static void browser_window_update(struct browser_window *bw,
bool scroll_to_top);
static void browser_window_set_status(struct browser_window *bw,
const char *text);
static void browser_window_set_pointer(gui_pointer_shape shape);
static void download_window_callback(content_msg msg, struct content *c,
void *p1, void *p2, union content_msg_data data);
static void browser_window_text_selection(struct browser_window* bw,
unsigned long click_x, unsigned long click_y, int click_type);
static void browser_window_clear_text_selection(struct browser_window* bw);
static void browser_window_change_text_selection(struct browser_window* bw, struct box_position* new_start, struct box_position* new_end);
static int redraw_box_list(struct browser_window* bw, struct box* current,
unsigned long x, unsigned long y, struct box_position* start,
struct box_position* end, int* plot);
static void browser_window_redraw_boxes(struct browser_window* bw, struct box_position* start, struct box_position* end);
static void browser_window_follow_link(struct browser_window* bw,
unsigned long click_x, unsigned long click_y, int click_type);
static void clear_radio_gadgets(struct browser_window* bw, struct box* box, struct form_control* group);
static void gui_redraw_gadget2(struct browser_window* bw, struct box* box, struct form_control* g,
unsigned long x, unsigned long y);
static void browser_window_gadget_select(struct browser_window* bw, struct form_control* g, int item);
static int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x, unsigned long click_y);
static void browser_form_submit(struct browser_window *bw, struct form *form,
struct form_control *submit_button);
static void browser_window_textarea_click(struct browser_window* bw,
unsigned long actual_x, unsigned long actual_y,
long x, long y,
struct box *box);
static void browser_window_textarea_callback(struct browser_window *bw, char key, void *p);
static void browser_window_input_click(struct browser_window* bw,
unsigned long actual_x, unsigned long actual_y,
unsigned long x, unsigned long y,
struct box *input);
static void browser_window_input_callback(struct browser_window *bw, char key, void *p);
static void browser_window_place_caret(struct browser_window *bw, int x, int y,
int height, void (*callback)(struct browser_window *bw, char key, void *p), void *p);
static gui_pointer_shape get_pointer_shape(css_cursor cursor);
/**
* Create and open a new browser window with the given page.
*
* \param url URL to start fetching in the new window (copied)
*/
void browser_window_create(const char *url, struct browser_window *clone)
{
struct browser_window *bw;
bw = malloc(sizeof *bw);
if (!bw) {
warn_user("NoMemory", 0);
return;
}
bw->current_content = 0;
bw->loading_content = 0;
bw->history = history_create();
bw->throbbing = false;
bw->caret_callback = 0;
bw->window = gui_create_browser_window(bw, clone);
if (!bw->window) {
free(bw);
return;
}
browser_window_go(bw, url);
}
/**
* Start fetching a page in a browser window.
*
* \param bw browser window
* \param url URL to start fetching (copied)
*
* Any existing fetches in the window are aborted.
*/
void browser_window_go(struct browser_window *bw, const char *url)
{
browser_window_go_post(bw, url, 0, 0, true);
}
/**
* Start fetching a page in a browser window, POSTing form data.
*
* \param bw browser window
* \param url URL to start fetching (copied)
* \param post_urlenc url encoded post data, or 0 if none
* \param post_multipart multipart post data, or 0 if none
* \param history_add add to window history
*
* Any existing fetches in the window are aborted.
*
* If post_urlenc and post_multipart are 0 the url is fetched using GET.
*
* The page is not added to the window history if add_history is false. This
* should be used when returning to a page in the window history.
*/
void browser_window_go_post(struct browser_window *bw, const char *url,
char *post_urlenc,
struct form_successful_control *post_multipart,
bool history_add)
{
struct content *c;
char *url2;
union content_msg_data data;
url2 = url_normalize(url);
if (!url2) {
LOG(("failed to normalize url %s", url));
return;
}
browser_window_stop(bw);
browser_window_set_status(bw, messages_get("Loading"));
bw->history_add = history_add;
bw->time0 = clock();
if (strncmp(url2, "about:", 6) == 0) {
c = about_create(url2, browser_window_callback, bw, 0,
gui_window_get_width(bw->window), 0);
}
else {
c = fetchcache(url2, 0,
browser_window_callback, bw, 0,
gui_window_get_width(bw->window), 0,
false,
post_urlenc, post_multipart,
true);
}
free(url2);
if (!c) {
browser_window_set_status(bw, messages_get("FetchFailed"));
return;
}
bw->loading_content = c;
browser_window_start_throbber(bw);
if (c->status == CONTENT_STATUS_READY) {
browser_window_callback(CONTENT_MSG_READY, c, bw, 0, data);
} else if (c->status == CONTENT_STATUS_DONE) {
browser_window_callback(CONTENT_MSG_READY, c, bw, 0, data);
if (c->type == CONTENT_OTHER)
download_window_callback(CONTENT_MSG_DONE, c, bw, 0, data);
else
browser_window_callback(CONTENT_MSG_DONE, c, bw, 0, data);
}
}
/**
* Callback for fetchcache() for browser window fetches.
*/
void browser_window_callback(content_msg msg, struct content *c,
void *p1, void *p2, union content_msg_data data)
{
struct browser_window *bw = p1;
char status[40];
if (c->type == CONTENT_OTHER) {
browser_window_convert_to_download(bw, msg);
return;
}
switch (msg) {
case CONTENT_MSG_LOADING:
break;
case CONTENT_MSG_READY:
assert(bw->loading_content == c);
if (bw->current_content) {
if (bw->current_content->status ==
CONTENT_STATUS_DONE)
content_remove_instance(
bw->current_content,
bw, 0, 0,
0,
&bw->current_content_state);
content_remove_user(bw->current_content,
browser_window_callback,
bw, 0);
}
bw->current_content = c;
bw->loading_content = 0;
bw->caret_callback = 0;
gui_window_set_url(bw->window, c->url);
browser_window_update(bw, true);
browser_window_set_status(bw, c->status_message);
if (bw->history_add)
history_add(bw->history, c);
break;
case CONTENT_MSG_DONE:
assert(bw->current_content == c);
content_add_instance(c, bw, 0, 0, 0,
&bw->current_content_state);
browser_window_update(bw, false);
content_reshape_instance(c, bw, 0, 0, 0,
&bw->current_content_state);
sprintf(status, messages_get("Complete"),
((float) (clock() - bw->time0)) /
CLOCKS_PER_SEC);
browser_window_set_status(bw, status);
browser_window_stop_throbber(bw);
history_update(bw->history, c);
break;
case CONTENT_MSG_ERROR:
browser_window_set_status(bw, data.error);
if (c == bw->loading_content)
bw->loading_content = 0;
else if (c == bw->current_content)
bw->current_content = 0;
browser_window_stop_throbber(bw);
break;
case CONTENT_MSG_STATUS:
browser_window_set_status(bw, c->status_message);
break;
case CONTENT_MSG_REDIRECT:
bw->loading_content = 0;
browser_window_set_status(bw,
messages_get("Redirecting"));
browser_window_go(bw, data.redirect);
break;
case CONTENT_MSG_REFORMAT:
browser_window_update(bw, false);
break;
case CONTENT_MSG_REDRAW:
gui_window_update_box(bw->window, &data);
break;
#ifdef WITH_AUTH
case CONTENT_MSG_AUTH:
gui_401login_open(bw, c, data.auth_realm);
if (c == bw->loading_content)
bw->loading_content = 0;
else if (c == bw->current_content)
bw->current_content = 0;
browser_window_stop_throbber(bw);
break;
#endif
default:
assert(0);
}
}
/**
* Transfer the loading_content to a new download window.
*/
void browser_window_convert_to_download(struct browser_window *bw,
content_msg msg)
{
gui_window *download_window;
struct content *c = bw->loading_content;
union content_msg_data data;
assert(c);
/* create download window and add content to it */
download_window = gui_create_download_window(c);
content_add_user(c, download_window_callback, download_window, 0);
if (msg == CONTENT_MSG_DONE)
download_window_callback(CONTENT_MSG_DONE, c, download_window,
0, data);
/* remove content from browser window */
bw->loading_content = 0;
content_remove_user(c, browser_window_callback, bw, 0);
browser_window_stop_throbber(bw);
}
/**
* Start the busy indicator.
*
* \param bw browser window
*/
void browser_window_start_throbber(struct browser_window *bw)
{
bw->throbbing = true;
gui_window_start_throbber(bw->window);
}
/**
* Stop the busy indicator.
*
* \param bw browser window
*/
void browser_window_stop_throbber(struct browser_window *bw)
{
bw->throbbing = false;
gui_window_stop_throbber(bw->window);
}
/**
* Redraw browser window, set extent to content, and update title.
*
* \param bw browser_window
* \param scroll_to_top move view to top of page
*/
void browser_window_update(struct browser_window *bw,
bool scroll_to_top)
{
if (!bw->current_content)
return;
if (bw->current_content->title)
gui_window_set_title(bw->window, bw->current_content->title);
else
gui_window_set_title(bw->window, bw->current_content->url);
gui_window_set_extent(bw->window, bw->current_content->width,
bw->current_content->height);
if (scroll_to_top)
gui_window_set_scroll(bw->window, 0, 0);
gui_window_redraw_window(bw->window);
}
/**
* Stop all fetching activity in a browser window.
*
* \param bw browser window
*/
void browser_window_stop(struct browser_window *bw)
{
if (bw->loading_content) {
content_remove_user(bw->loading_content,
browser_window_callback, bw, 0);
bw->loading_content = 0;
}
if (bw->current_content &&
bw->current_content->status != CONTENT_STATUS_DONE) {
assert(bw->current_content->status == CONTENT_STATUS_READY);
/** \todo implement content_stop */
}
browser_window_stop_throbber(bw);
}
/**
* Change the status bar of a browser window.
*
* \param bw browser window
* \param text new status text (copied)
*/
void browser_window_set_status(struct browser_window *bw, const char *text)
{
gui_window_set_status(bw->window, text);
}
/**
* Change the shape of the mouse pointer
*
* \param shape shape to use
*/
void browser_window_set_pointer(gui_pointer_shape shape)
{
gui_window_set_pointer(shape);
}
/**
* Close and destroy a browser window.
*
* \param bw browser window
*/
void browser_window_destroy(struct browser_window *bw)
{
if (bw->loading_content) {
content_remove_user(bw->loading_content,
browser_window_callback, bw, 0);
bw->loading_content = 0;
}
if (bw->current_content) {
if (bw->current_content->status == CONTENT_STATUS_DONE)
content_remove_instance(bw->current_content, bw, 0,
0, 0, &bw->current_content_state);
content_remove_user(bw->current_content,
browser_window_callback, bw, 0);
}
history_destroy(bw->history);
gui_window_destroy(bw->window);
free(bw);
}
/**
* Callback for fetchcache() for download window fetches.
*/
void download_window_callback(content_msg msg, struct content *c,
void *p1, void *p2, union content_msg_data data)
{
gui_window *download_window = p1;
switch (msg) {
case CONTENT_MSG_STATUS:
gui_download_window_update_status(download_window);
break;
case CONTENT_MSG_DONE:
gui_download_window_done(download_window);
break;
case CONTENT_MSG_ERROR:
gui_download_window_error(download_window, data.error);
break;
case CONTENT_MSG_READY:
break;
case CONTENT_MSG_LOADING:
case CONTENT_MSG_REDIRECT:
/* not possible at this point, handled in
browser_window_callback() */
assert(0);
break;
case CONTENT_MSG_REFORMAT:
break;
case CONTENT_MSG_REDRAW:
break;
#ifdef WITH_AUTH
case CONTENT_MSG_AUTH:
break;
#endif
}
}
void clear_radio_gadgets(struct browser_window *bw, struct box *box,
struct form_control *group)
{
struct box *c;
if (box == NULL)
return;
if (box->gadget != 0) {
if (box->gadget->type == GADGET_RADIO
&& box->gadget->name != 0 && box->gadget != group) {
if (strcmp(box->gadget->name, group->name) == 0) {
if (box->gadget->data.radio.selected) {
box->gadget->data.radio.selected =
0;
gui_redraw_gadget(bw, box->gadget);
}
}
}
}
for (c = box->children; c != 0; c = c->next)
if (c->type != BOX_FLOAT_LEFT
&& c->type != BOX_FLOAT_RIGHT)
clear_radio_gadgets(bw, c, group);
for (c = box->float_children; c != 0; c = c->next_float)
clear_radio_gadgets(bw, c, group);
}
void gui_redraw_gadget2(struct browser_window *bw, struct box *box,
struct form_control *g, unsigned long x,
unsigned long y)
{
struct box *c;
if (box->gadget == g) {
gui_window_redraw(bw->window, x + box->x, y + box->y,
x + box->x + box->width,
y + box->y + box->height);
}
for (c = box->children; c != 0; c = c->next)
if (c->type != BOX_FLOAT_LEFT
&& c->type != BOX_FLOAT_RIGHT)
gui_redraw_gadget2(bw, c, g, box->x + x,
box->y + y);
for (c = box->float_children; c != 0; c = c->next_float)
gui_redraw_gadget2(bw, c, g, box->x + x, box->y + y);
}
void gui_redraw_gadget(struct browser_window* bw, struct form_control* g)
{
assert(bw->current_content->type == CONTENT_HTML);
gui_redraw_gadget2(bw, bw->current_content->data.html.layout->children, g, 0, 0);
}
void browser_window_gadget_select(struct browser_window* bw, struct form_control* g, int item)
{
struct form_option* o;
int count;
struct box *inline_box = g->box->children->children;
int x, y;
for (count = 0, o = g->data.select.items;
o != NULL;
count++, o = o->next) {
if (!g->data.select.multiple)
o->selected = false;
if (count == item) {
if (g->data.select.multiple) {
if (o->selected) {
o->selected = false;
g->data.select.num_selected--;
} else {
o->selected = true;
g->data.select.num_selected++;
}
} else {
o->selected = true;
}
}
if (o->selected)
g->data.select.current = o;
}
xfree(inline_box->text);
if (g->data.select.num_selected == 0)
inline_box->text = xstrdup(messages_get("Form_None"));
else if (g->data.select.num_selected == 1)
inline_box->text = xstrdup(g->data.select.current->text);
else
inline_box->text = xstrdup(messages_get("Form_Many"));
inline_box->width = g->box->width;
inline_box->length = strlen(inline_box->text);
box_coords(g->box, &x, &y);
gui_window_redraw(bw->window, (unsigned int)x, (unsigned int)y,
(unsigned int)(x + g->box->width),
(unsigned int)(y + g->box->height));
}
int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x, unsigned long click_y)
{
struct box_selection* click_boxes;
int found, plot_index;
int i;
int x, y;
found = 0;
click_boxes = NULL;
plot_index = 0;
assert(bw->current_content->type == CONTENT_HTML);
box_under_area(bw->current_content,
bw->current_content->data.html.layout->children,
click_x, click_y, 0, 0, &click_boxes, &found, &plot_index);
if (found == 0)
return 0;
for (i = found - 1; i >= 0; i--)
{
if (click_boxes[i].box->style->visibility == CSS_VISIBILITY_HIDDEN)
continue;
if (click_boxes[i].box->gadget)
{
struct form_control* g = click_boxes[i].box->gadget;
/* gadget clicked */
switch (g->type)
{
case GADGET_SELECT:
gui_gadget_combo(bw, g, click_x, click_y);
break;
case GADGET_CHECKBOX:
g->data.checkbox.selected = !g->data.checkbox.selected;
gui_redraw_gadget(bw, g);
break;
case GADGET_RADIO:
clear_radio_gadgets(bw, click_boxes[i].content->data.html.layout->children, g);
g->data.radio.selected = -1;
gui_redraw_gadget(bw, g);
break;
case GADGET_SUBMIT:
if (g->form)
browser_form_submit(bw, g->form, g);
break;
case GADGET_TEXTAREA:
browser_window_textarea_click(bw,
(unsigned int)click_boxes[i].actual_x,
(unsigned int)click_boxes[i].actual_y,
(int)(click_x - click_boxes[i].actual_x),
(int)(click_y - click_boxes[i].actual_y),
click_boxes[i].box);
break;
case GADGET_TEXTBOX:
case GADGET_PASSWORD:
browser_window_input_click(bw,
(unsigned int)click_boxes[i].actual_x,
(unsigned int)click_boxes[i].actual_y,
click_x - click_boxes[i].actual_x,
click_y - click_boxes[i].actual_y,
click_boxes[i].box);
break;
case GADGET_HIDDEN:
break;
case GADGET_IMAGE:
box_coords(click_boxes[i].box, &x, &y);
g->data.image.mx = click_x - x;
g->data.image.my = click_y - y;
if (g->form)
browser_form_submit(bw, g->form, g);
break;
case GADGET_RESET:
break;
case GADGET_FILE:
break;
}
xfree(click_boxes);
return 1;
}
}
xfree(click_boxes);
return 0;
}
/**
* Handle clicks in a text area by placing the caret.
*/
void browser_window_textarea_click(struct browser_window* bw,
unsigned long actual_x, unsigned long actual_y,
long x, long y,
struct box *textarea)
{
/* a textarea contains one or more inline containers, which contain
* the formatted paragraphs of text as inline boxes */
int char_offset, pixel_offset, dy;
struct box *inline_container, *text_box, *ic;
for (inline_container = textarea->children;
inline_container && inline_container->y + inline_container->height < y;
inline_container = inline_container->next)
;
if (!inline_container) {
/* below the bottom of the textarea: place caret at end */
inline_container = textarea->last;
text_box = inline_container->last;
assert(text_box->type == BOX_INLINE);
assert(text_box->text && text_box->font);
font_position_in_string(text_box->text, text_box->font,
text_box->length,
(unsigned int)textarea->width,
&char_offset, &pixel_offset);
} else {
/* find the relevant text box */
y -= inline_container->y;
for (text_box = inline_container->children;
text_box && (text_box->y + text_box->height < y ||
text_box->x + text_box->width < x);
text_box = text_box->next)
;
if (!text_box) {
/* past last text box */
text_box = inline_container->last;
assert(text_box->type == BOX_INLINE);
assert(text_box->text && text_box->font);
font_position_in_string(text_box->text, text_box->font,
text_box->length,
(unsigned int)textarea->width,
&char_offset, &pixel_offset);
} else {
/* in a text box */
assert(text_box->type == BOX_INLINE);
assert(text_box->text && text_box->font);
font_position_in_string(text_box->text, text_box->font,
text_box->length,
(unsigned int)(x - text_box->x),
&char_offset, &pixel_offset);
}
}
dy = textarea->height / 2 -
(inline_container->y + text_box->y + text_box->height / 2);
if (textarea->last->y + textarea->last->height + dy < textarea->height)
dy = textarea->height - textarea->last->y - textarea->last->height;
if (0 < textarea->children->y + dy)
dy = -textarea->children->y;
for (ic = textarea->children; ic; ic = ic->next)
ic->y += dy;
textarea->gadget->caret_inline_container = inline_container;
textarea->gadget->caret_text_box = text_box;
textarea->gadget->caret_char_offset = char_offset;
browser_window_place_caret(bw,
(int)(actual_x + text_box->x + pixel_offset),
(int)(actual_y + inline_container->y + text_box->y),
text_box->height,
browser_window_textarea_callback, textarea);
gui_window_redraw(bw->window,
actual_x,
actual_y,
actual_x + textarea->width,
actual_y + textarea->height);
}
/**
* Key press callback for text areas.
*/
void browser_window_textarea_callback(struct browser_window *bw, char key, void *p)
{
struct box *textarea = p;
struct box *inline_container = textarea->gadget->caret_inline_container;
struct box *text_box = textarea->gadget->caret_text_box;
struct box *ic;
int char_offset = textarea->gadget->caret_char_offset;
int pixel_offset, dy;
int actual_x, actual_y;
unsigned long width = 0, height = 0;
bool reflow = false;
box_coords(textarea, &actual_x, &actual_y);
/* box_dump(textarea, 0); */
LOG(("key %i at %i in '%.*s'", key, char_offset, (int) text_box->length, text_box->text));
if (32 <= key && key != 127) {
/* normal character insertion */
text_box->text = xrealloc(text_box->text, text_box->length + 2);
memmove(text_box->text + char_offset + 1,
text_box->text + char_offset,
text_box->length - char_offset);
text_box->text[char_offset] = key;
text_box->length++;
text_box->text[text_box->length] = 0;
text_box->width = UNKNOWN_WIDTH;
char_offset++;
reflow = true;
} else if (key == 10 || key == 13) {
/* paragraph break */
struct box *new_container = box_create(0, 0, 0,
bw->current_content->data.html.box_pool);
struct box *new_text = xcalloc(1, sizeof(*new_text));
struct box *t;
new_container->type = BOX_INLINE_CONTAINER;
box_insert_sibling(inline_container, new_container);
memcpy(new_text, text_box, sizeof(*new_text));
new_text->clone = 1;
new_text->text = xcalloc(text_box->length + 1, 1);
memcpy(new_text->text, text_box->text + char_offset,
text_box->length - char_offset);
new_text->length = text_box->length - char_offset;
text_box->length = char_offset;
new_text->prev = 0;
new_text->next = text_box->next;
text_box->next = 0;
if (new_text->next)
new_text->next->prev = new_text;
else
new_container->last = new_text;
text_box->width = new_text->width = UNKNOWN_WIDTH;
new_container->last = inline_container->last;
inline_container->last = text_box;
new_container->children = new_text;
for (t = new_container->children; t; t = t->next)
t->parent = new_container;
inline_container = new_container;
text_box = inline_container->children;
char_offset = 0;
reflow = true;
} else if (key == 8 || key == 127) {
/* delete to left */
if (char_offset == 0) {
/* at the start of a text box */
struct box *prev;
if (text_box->prev) {
/* can be merged with previous text box */
} else if (inline_container->prev) {
/* merge with previous paragraph */
struct box *prev_container = inline_container->prev;
struct box *t;
for (t = inline_container->children; t; t = t->next)
t->parent = prev_container;
prev_container->last->next = inline_container->children;
inline_container->children->prev = prev_container->last;
prev_container->last = inline_container->last;
prev_container->next = inline_container->next;
if (inline_container->next)
inline_container->next->prev = prev_container;
else
inline_container->parent->last = prev_container;
inline_container->children = 0;
box_free(inline_container);
inline_container = prev_container;
} else {
/* at very beginning of text area: ignore */
return;
}
/* delete space by merging with previous text box */
prev = text_box->prev;
assert(prev->text);
prev->text = xrealloc(prev->text, prev->length + text_box->length + 1);
memcpy(prev->text + prev->length, text_box->text, text_box->length);
char_offset = prev->length;
prev->length += text_box->length;
prev->text[prev->length] = 0;
prev->width = UNKNOWN_WIDTH;
prev->next = text_box->next;
if (prev->next)
prev->next->prev = prev;
else
prev->parent->last = prev;
box_free(text_box);
text_box = prev;
} else if (char_offset == 1 && text_box->length == 1) {
/* delete this text box and add a space */
if (text_box->prev) {
struct box *prev = text_box->prev;
prev->text = xrealloc(prev->text, prev->length + 2);
prev->text[prev->length] = ' ';
prev->length++;
prev->text[prev->length] = 0;
prev->width = UNKNOWN_WIDTH;
prev->next = text_box->next;
if (prev->next)
prev->next->prev = prev;
else
prev->parent->last = prev;
box_free(text_box);
text_box = prev;
char_offset = prev->length;
} else if (text_box->next) {
struct box *next = text_box->next;
next->text = xrealloc(next->text, next->length + 2);
memmove(next->text + 1, next->text, next->length);
next->text[0] = ' ';
next->length++;
next->text[next->length] = 0;
next->width = UNKNOWN_WIDTH;
next->prev = 0;
next->parent->children = next;
box_free(text_box);
text_box = next;
char_offset = 0;
} else {
text_box->length = 0;
text_box->width = UNKNOWN_WIDTH;
char_offset--;
}
} else {
/* delete a character */
memmove(text_box->text + char_offset - 1,
text_box->text + char_offset,
text_box->length - char_offset);
text_box->length--;
text_box->width = UNKNOWN_WIDTH;
char_offset--;
}
reflow = true;
} else if (key == 28) {
/* Right cursor -> */
if ((unsigned int)char_offset == text_box->length &&
text_box == inline_container->last &&
inline_container->next) {
/* move to start of next box (if it exists) */
text_box = inline_container->next->children;
char_offset = 0;
inline_container=inline_container->next;
}
else if ((unsigned int)char_offset == text_box->length && text_box->next) {
text_box = text_box->next;
char_offset = 0;
}
else if ((unsigned int)char_offset != text_box->length) {
char_offset++;
}
else {
return;
}
} else if (key == 29) {
/* Left cursor <- */
if (char_offset == 0 &&
text_box == inline_container->children &&
inline_container->prev) {
/* move to end of previous box */
text_box = inline_container->prev->children;
inline_container=inline_container->prev;
char_offset = text_box->length;
}
else if (char_offset == 0 && text_box->next) {
text_box = text_box->next;
char_offset = text_box->length;
}
else if (char_offset != 0) {
char_offset--;
}
else {
return;
}
} else if (key == 30) {
/* Up Cursor */
if (text_box == inline_container->children &&
inline_container->prev) {
text_box = inline_container->prev->children;
inline_container = inline_container->prev;
if ((unsigned int)char_offset > text_box->length) {
char_offset = text_box->length;
}
}
else if (text_box->prev) {
text_box = text_box->prev;
if ((unsigned int)char_offset > text_box->length) {
char_offset = text_box->length;
}
}
else {
return;
}
} else if (key == 31) {
/* Down cursor */
if (text_box == inline_container->last &&
inline_container->next) {
text_box = inline_container->next->children;
inline_container = inline_container->next;
if ((unsigned int)char_offset > text_box->length) {
char_offset = text_box->length;
}
}
else if (text_box->next) {
text_box = text_box->next;
if ((unsigned int)char_offset > text_box->length) {
char_offset = text_box->length;
}
}
else {
return;
}
} else {
return;
}
box_dump(textarea, 0);
/* for (struct box *ic = textarea->children; ic; ic = ic->next) {
assert(ic->type == BOX_INLINE_CONTAINER);
assert(ic->parent == textarea);
if (ic->next) assert(ic->next->prev == ic);
if (ic->prev) assert(ic->prev->next == ic);
if (!ic->next) assert(textarea->last == ic);
for (struct box *t = ic->children; t; t = t->next) {
assert(t->type == BOX_INLINE);
assert(t->text);
assert(t->font);
assert(t->parent == ic);
if (t->next) assert(t->next->prev == t);
if (t->prev) assert(t->prev->next == t);
if (!t->next) assert(ic->last == t);
}
} */
if (reflow) {
/* reflow textarea preserving width and height */
width = textarea->width;
height = textarea->height;
layout_block_context(textarea);
textarea->width = width;
textarea->height = height;
}
/* box_dump(textarea, 0); */
/* for (struct box *ic = textarea->children; ic; ic = ic->next) {
assert(ic->type == BOX_INLINE_CONTAINER);
assert(ic->parent == textarea);
if (ic->next) assert(ic->next->prev == ic);
if (ic->prev) assert(ic->prev->next == ic);
if (!ic->next) assert(textarea->last == ic);
for (struct box *t = ic->children; t; t = t->next) {
assert(t->type == BOX_INLINE);
assert(t->text);
assert(t->font);
assert(t->parent == ic);
if (t->next) assert(t->next->prev == t);
if (t->prev) assert(t->prev->next == t);
if (!t->next) assert(ic->last == t);
}
} */
if (text_box->length < (unsigned int)char_offset) {
/* the text box has been split and the caret is in the second part */
char_offset -= (text_box->length + 1); /* +1 for the space */
text_box = text_box->next;
assert(text_box);
assert((unsigned int)char_offset <= text_box->length);
}
dy = textarea->height / 2 -
(inline_container->y + text_box->y + text_box->height / 2);
if (textarea->last->y + textarea->last->height + dy < textarea->height)
dy = textarea->height - textarea->last->y - textarea->last->height;
if (0 < textarea->children->y + dy)
dy = -textarea->children->y;
for (ic = textarea->children; ic; ic = ic->next)
ic->y += dy;
pixel_offset = font_width(text_box->font, text_box->text,
(unsigned int)char_offset);
textarea->gadget->caret_inline_container = inline_container;
textarea->gadget->caret_text_box = text_box;
textarea->gadget->caret_char_offset = char_offset;
browser_window_place_caret(bw,
(int)(actual_x + text_box->x + pixel_offset),
(int)(actual_y + inline_container->y + text_box->y),
text_box->height,
browser_window_textarea_callback, textarea);
gui_window_redraw(bw->window,
actual_x,
actual_y,
actual_x + width,
actual_y + height);
}
/**
* Handle clicks in a text or password input box by placing the caret.
*/
void browser_window_input_click(struct browser_window* bw,
unsigned long actual_x, unsigned long actual_y,
unsigned long x, unsigned long y,
struct box *input)
{
int char_offset, pixel_offset;
struct box *text_box = input->children->children;
font_position_in_string(text_box->text, text_box->font,
text_box->length, x - text_box->x,
&char_offset, &pixel_offset);
text_box->x = 0;
if ((input->width < text_box->width) && (input->width / 2 < pixel_offset)) {
text_box->x = input->width / 2 - pixel_offset;
if (text_box->x < input->width - text_box->width)
text_box->x = input->width - text_box->width;
}
input->gadget->caret_char_offset = char_offset;
browser_window_place_caret(bw,
(int)(actual_x + text_box->x + pixel_offset),
(int)(actual_y + text_box->y),
text_box->height,
browser_window_input_callback, input);
gui_window_redraw(bw->window,
actual_x,
actual_y,
actual_x + input->width,
actual_y + input->height);
}
/**
* Key press callback for text or password input boxes.
*/
void browser_window_input_callback(struct browser_window *bw, char key, void *p)
{
struct box *input = p;
struct box *text_box = input->children->children;
int char_offset = input->gadget->caret_char_offset;
int pixel_offset;
int actual_x, actual_y;
struct form* form = input->gadget->form;
box_coords(input, &actual_x, &actual_y);
if ((32 <= key && key != 127) && text_box->length < input->gadget->maxlength) {
/* normal character insertion */
text_box->text = xrealloc(text_box->text, text_box->length + 2);
input->gadget->value = xrealloc(input->gadget->value, text_box->length + 2);
memmove(text_box->text + char_offset + 1,
text_box->text + char_offset,
text_box->length - char_offset);
memmove(input->gadget->value + char_offset + 1,
input->gadget->value + char_offset,
text_box->length - char_offset);
if (input->gadget->type == GADGET_PASSWORD)
text_box->text[char_offset] = '*';
else
text_box->text[char_offset] = key == ' ' ? 160 : key;
input->gadget->value[char_offset] = key;
text_box->length++;
text_box->text[text_box->length] = 0;
input->gadget->value[text_box->length] = 0;
char_offset++;
} else if ((key == 8 || key == 127) && char_offset != 0) {
/* delete to left */
memmove(text_box->text + char_offset - 1,
text_box->text + char_offset,
text_box->length - char_offset);
memmove(input->gadget->value + char_offset - 1,
input->gadget->value + char_offset,
text_box->length - char_offset);
text_box->length--;
input->gadget->value[text_box->length] = 0;
char_offset--;
} else if (key == 10 || key == 13) {
/* Return/Enter hit */
if (form)
browser_form_submit(bw, form, 0);
} else if (key == 9) {
/* Tab */
struct form_control* next_input;
for (next_input = input->gadget->next;
next_input != 0 && next_input->type != GADGET_TEXTBOX &&
next_input->type != GADGET_TEXTAREA &&
next_input->type != GADGET_PASSWORD;
next_input = next_input->next)
;
if (!next_input) return;
input = next_input->box;
text_box = input->children->children;
box_coords(input, &actual_x, &actual_y);
text_box->x = 0;
input->gadget->caret_char_offset = 0;
browser_window_place_caret(bw,
(int)(actual_x + text_box->x),
(int)(actual_y + text_box->y),
text_box->height,
browser_window_input_callback, input);
gui_window_redraw(bw->window,
actual_x,
actual_y,
actual_x + input->width,
actual_y + input->height);
return;
} else if (key == 11) {
/* Shift+Tab */
struct form_control* prev_input;
for (prev_input = input->gadget->prev;
prev_input != 0 && prev_input->type != GADGET_TEXTBOX &&
prev_input->type != GADGET_TEXTAREA &&
prev_input->type != GADGET_PASSWORD;
prev_input = prev_input->prev)
;
if (!prev_input) return;
input = prev_input->box;
text_box = input->children->children;
box_coords(input, &actual_x, &actual_y);
text_box->x = 0;
input->gadget->caret_char_offset = 0;
browser_window_place_caret(bw,
(int)(actual_x + text_box->x),
(int)(actual_y + text_box->y),
text_box->height,
browser_window_input_callback, input);
gui_window_redraw(bw->window,
actual_x,
actual_y,
actual_x + input->width,
actual_y + input->height);
return;
} else if (key == 21) {
/* Ctrl+U */
xfree(text_box->text);
text_box->text = xcalloc(0, sizeof(char));
text_box->length = 0;
xfree(input->gadget->value);
input->gadget->value = xcalloc(0, sizeof(char));
char_offset = 0;
} else if (key == 26) {
/* Ctrl+Left */
char_offset = 0;
} else if (key == 27) {
/* Ctrl+Right */
char_offset = text_box->length;
} else if (key == 28 && (unsigned int)char_offset != text_box->length) {
/* Right cursor -> */
char_offset++;
} else if (key == 29 && char_offset != 0) {
/* Left cursor <- */
char_offset--;
} else {
return;
}
text_box->width = font_width(text_box->font, text_box->text,
(unsigned int)text_box->length);
pixel_offset = font_width(text_box->font, text_box->text,
(unsigned int)char_offset);
text_box->x = 0;
if ((input->width < text_box->width) && (input->width / 2 < pixel_offset)) {
text_box->x = input->width / 2 - pixel_offset;
if (text_box->x < input->width - text_box->width)
text_box->x = input->width - text_box->width;
}
input->gadget->caret_char_offset = char_offset;
browser_window_place_caret(bw,
(int)(actual_x + text_box->x + pixel_offset),
(int)(actual_y + text_box->y),
text_box->height,
browser_window_input_callback, input);
gui_window_redraw(bw->window,
actual_x,
actual_y,
actual_x + input->width,
actual_y + input->height);
}
/**
* Position the caret and assign a callback for key presses.
*/
void browser_window_place_caret(struct browser_window *bw, int x, int y,
int height, void (*callback)(struct browser_window *bw, char key, void *p), void *p)
{
gui_window_place_caret(bw->window, x, y, height);
bw->caret_callback = callback;
bw->caret_p = p;
}
/**
* Handle key presses in a browser window.
*/
bool browser_window_key_press(struct browser_window *bw, char key)
{
if (!bw->caret_callback)
return false;
bw->caret_callback(bw, key, bw->caret_p);
return true;
}
int browser_window_action(struct browser_window *bw,
struct browser_action *act)
{
switch (act->type) {
case act_MOUSE_AT:
browser_window_follow_link(bw, act->data.mouse.x,
act->data.mouse.y, 0);
break;
case act_MOUSE_CLICK:
return browser_window_gadget_click(bw, act->data.mouse.x,
act->data.mouse.y);
break;
case act_CLEAR_SELECTION:
browser_window_text_selection(bw, act->data.mouse.x,
act->data.mouse.y, 0);
break;
case act_START_NEW_SELECTION:
browser_window_text_selection(bw, act->data.mouse.x,
act->data.mouse.y, 1);
break;
case act_ALTER_SELECTION:
browser_window_text_selection(bw, act->data.mouse.x,
act->data.mouse.y, 2);
break;
case act_FOLLOW_LINK:
browser_window_follow_link(bw, act->data.mouse.x,
act->data.mouse.y, 1);
break;
case act_FOLLOW_LINK_NEW_WINDOW:
browser_window_follow_link(bw, act->data.mouse.x,
act->data.mouse.y, 2);
break;
case act_GADGET_SELECT:
browser_window_gadget_select(bw, act->data.gadget_select.g,
act->data.gadget_select.item);
default:
break;
}
return 0;
}
void box_under_area(struct content *content, struct box *box,
unsigned long x, unsigned long y,
unsigned long ox, unsigned long oy,
struct box_selection **found, int *count,
int *plot_index)
{
struct box *c;
if (box == NULL)
return;
*plot_index = *plot_index + 1;
if (x >= box->x + ox && x <= box->x + ox + box->width &&
y >= box->y + oy && y <= box->y + oy + box->height) {
*found =
xrealloc(*found,
sizeof(struct box_selection) * (*count + 1));
(*found)[*count].content = content;
(*found)[*count].box = box;
(*found)[*count].actual_x = box->x + ox;
(*found)[*count].actual_y = box->y + oy;
(*found)[*count].plot_index = *plot_index;
*count = *count + 1;
}
/* consider embedded HTML pages */
if (box->object != 0 && box->object->type == CONTENT_HTML &&
box->object->data.html.layout != 0)
box_under_area(box->object, box->object->data.html.layout,
x, y, box->x + ox, box->y +oy,
found, count, plot_index);
for (c = box->children; c != 0; c = c->next)
if (c->type != BOX_FLOAT_LEFT
&& c->type != BOX_FLOAT_RIGHT)
box_under_area(content, c, x, y,
box->x + ox, box->y + oy,
found, count, plot_index);
for (c = box->float_children; c != 0; c = c->next_float)
box_under_area(content, c, x, y, box->x + ox, box->y + oy,
found, count, plot_index);
return;
}
gui_pointer_shape get_pointer_shape(css_cursor cursor) {
gui_pointer_shape pointer;
switch (cursor) {
case CSS_CURSOR_CROSSHAIR:
pointer = GUI_POINTER_CROSS;
break;
case CSS_CURSOR_POINTER:
pointer = GUI_POINTER_POINT;
break;
case CSS_CURSOR_MOVE:
pointer = GUI_POINTER_MOVE;
break;
case CSS_CURSOR_E_RESIZE:
case CSS_CURSOR_W_RESIZE:
pointer = GUI_POINTER_LR;
break;
case CSS_CURSOR_N_RESIZE:
case CSS_CURSOR_S_RESIZE:
pointer = GUI_POINTER_UD;
break;
case CSS_CURSOR_NE_RESIZE:
case CSS_CURSOR_SW_RESIZE:
pointer = GUI_POINTER_LD;
break;
case CSS_CURSOR_SE_RESIZE:
case CSS_CURSOR_NW_RESIZE:
pointer = GUI_POINTER_RD;
break;
case CSS_CURSOR_TEXT:
pointer = GUI_POINTER_CARET;
break;
default:
pointer = GUI_POINTER_DEFAULT;
break;
}
return pointer;
}
void browser_window_follow_link(struct browser_window *bw,
unsigned long click_x,
unsigned long click_y, int click_type)
{
struct box_selection *click_boxes;
int found, plot_index;
int i;
int done = 0;
struct css_style *style;
gui_pointer_shape pointer = GUI_POINTER_DEFAULT;
found = 0;
click_boxes = NULL;
plot_index = 0;
if (bw->current_content->type != CONTENT_HTML)
return;
box_under_area(bw->current_content,
bw->current_content->data.html.layout->children,
click_x, click_y, 0, 0, &click_boxes, &found,
&plot_index);
if (found == 0)
return;
for (i = found - 1; i >= 0; i--) {
style = click_boxes[i].box->style;
if (style != 0 && style->visibility == CSS_VISIBILITY_HIDDEN)
continue;
if (click_boxes[i].box->href != NULL) {
char *url =
url_join((char *) click_boxes[i].box->href,
click_boxes[i].content->data.html.
base_url);
if (!url)
continue;
if (click_type == 1) {
if (fetch_can_fetch(url)) {
browser_window_go(bw, url);
}
else {
gui_launch_url(url);
done = 1;
}
} else if (click_type == 2) {
if (fetch_can_fetch(url)) {
browser_window_create(url, bw);
}
else {
gui_launch_url(url);
done = 1;
}
} else if (click_type == 0) {
browser_window_set_status(bw, url);
pointer = GUI_POINTER_POINT;
done = 1;
}
free(url);
break;
}
if (click_boxes[i].box->usemap != NULL) {
char *href, *url;
href = imagemap_get(click_boxes[i].content,
click_boxes[i].box->usemap,
click_boxes[i].actual_x,
click_boxes[i].actual_y,
click_x, click_y);
if (!href)
continue;
url = url_join(href,
click_boxes[i].content->data.html.
base_url);
if (!url)
continue;
if (click_type == 1) {
if (fetch_can_fetch(url)) {
browser_window_go(bw, url);
}
else {
gui_launch_url(url);
done = 1;
}
} else if (click_type == 2) {
if (fetch_can_fetch(url)) {
browser_window_create(url, NULL);
}
else {
gui_launch_url(url);
done = 1;
}
} else if (click_type == 0) {
browser_window_set_status(bw, url);
pointer = GUI_POINTER_POINT;
done = 1;
}
free(url);
break;
}
if (click_type == 0 && click_boxes[i].box->gadget != NULL) {
if (click_boxes[i].box->gadget->type == GADGET_TEXTBOX ||
click_boxes[i].box->gadget->type == GADGET_TEXTAREA ||
click_boxes[i].box->gadget->type == GADGET_PASSWORD) {
pointer = GUI_POINTER_CARET;
done = 1;
break;
}
else if (click_boxes[i].box->gadget->type == GADGET_SELECT) {
pointer = GUI_POINTER_MENU;
done = 1;
break;
}
else if (click_boxes[i].box->gadget->type == GADGET_SUBMIT) {
struct form *form;
char *url, *href;
form = click_boxes[i].box->gadget->form;
if (!form) continue;
href = form->action;
if (!href) continue;
url = url_join(href, click_boxes[i].content->data.html.base_url);
if (!url) continue;
browser_window_set_status(bw, url);
free(url);
done = 1;
break;
}
}
if (click_type == 0 && click_boxes[i].box->title != NULL) {
browser_window_set_status(bw,
click_boxes[i].box->
title);
done = 1;
break;
}
if (click_type == 0 && style != 0 &&
style->cursor != CSS_CURSOR_UNKNOWN &&
pointer == GUI_POINTER_DEFAULT) {
pointer = get_pointer_shape(click_boxes[i].box->style->cursor);
}
}
if (click_type == 0 && done == 0) {
if (bw->loading_content != 0) {
browser_window_set_status(bw,
bw->loading_content->
status_message);
}
else {
browser_window_set_status(bw,
bw->current_content->
status_message);
}
}
browser_window_set_pointer(pointer);
free(click_boxes);
return;
}
void browser_window_text_selection(struct browser_window *bw,
unsigned long click_x,
unsigned long click_y, int click_type)
{
struct box_selection *click_boxes;
int found, plot_index;
int i;
if (click_type == 0 /* click_CLEAR_SELECTION */ ) {
browser_window_clear_text_selection(bw);
return;
}
found = 0;
click_boxes = NULL;
plot_index = 0;
assert(bw->current_content->type == CONTENT_HTML);
box_under_area(bw->current_content,
bw->current_content->data.html.layout->children,
click_x, click_y, 0, 0, &click_boxes, &found,
&plot_index);
if (found == 0)
return;
for (i = found - 1; i >= 0; i--) {
if (click_boxes[i].box->type == BOX_INLINE) {
struct box_position new_pos;
struct box_position *start;
struct box_position *end;
int click_char_offset, click_pixel_offset;
/* shortcuts */
start =
&(bw->current_content->data.html.
text_selection.start);
end =
&(bw->current_content->data.html.
text_selection.end);
if (click_boxes[i].box->text
&& click_boxes[i].box->font) {
font_position_in_string(click_boxes[i].
box->text,
click_boxes[i].
box->font,
click_boxes[i].
box->length,
click_x -
click_boxes[i].
actual_x,
&click_char_offset,
&click_pixel_offset);
} else {
click_char_offset = 0;
click_pixel_offset = 0;
}
new_pos.box = click_boxes[i].box;
new_pos.actual_box_x = click_boxes[i].actual_x;
new_pos.actual_box_y = click_boxes[i].actual_y;
new_pos.plot_index = click_boxes[i].plot_index;
new_pos.char_offset = click_char_offset;
new_pos.pixel_offset = click_pixel_offset;
if (click_type == 1 /* click_START_SELECTION */ ) {
/* update both start and end */
browser_window_clear_text_selection(bw);
click_boxes[i].content->data.html.
text_selection.altering =
alter_UNKNOWN;
click_boxes[i].content->data.html.
text_selection.selected = 1;
memcpy(start, &new_pos,
sizeof(struct box_position));
memcpy(end, &new_pos,
sizeof(struct box_position));
i = -1;
} else if (click_boxes[i].content->data.html.
text_selection.selected == 1
&& click_type ==
2 /* click_ALTER_SELECTION */ ) {
/* alter selection */
if (click_boxes[i].content->data.html.
text_selection.altering !=
alter_UNKNOWN) {
if (click_boxes[i].content->data.html.
text_selection.altering ==
alter_START) {
if (box_position_gt
(&new_pos, end)) {
click_boxes[i].content->data.html.text_selection.altering = alter_END;
browser_window_change_text_selection
(bw, end,
&new_pos);
} else
browser_window_change_text_selection
(bw, &new_pos,
end);
} else {
if (box_position_lt
(&new_pos, start)) {
click_boxes[i].content->data.html.text_selection.altering = alter_START;
browser_window_change_text_selection
(bw, &new_pos,
start);
} else
browser_window_change_text_selection
(bw, start,
&new_pos);
}
i = -1;
} else {
/* work out whether the start or end is being dragged */
int click_start_distance = 0;
int click_end_distance = 0;
int inside_block = 0;
int before_start = 0;
int after_end = 0;
if (box_position_lt
(&new_pos, start))
before_start = 1;
if (box_position_gt(&new_pos, end))
after_end = 1;
if (!box_position_lt
(&new_pos, start)
&& !box_position_gt(&new_pos,
end))
inside_block = 1;
if (inside_block == 1) {
click_start_distance =
box_position_distance
(start, &new_pos);
click_end_distance =
box_position_distance
(end, &new_pos);
}
if (before_start == 1
|| (after_end == 0
&& inside_block == 1
&& click_start_distance <
click_end_distance)) {
/* alter the start position */
click_boxes[i].content->data.
html.text_selection.
altering = alter_START;
browser_window_change_text_selection
(bw, &new_pos, end);
i = -1;
} else if (after_end == 1
|| (before_start == 0
&& inside_block == 1
&&
click_start_distance
>=
click_end_distance))
{
/* alter the end position */
click_boxes[i].content->data.
html.text_selection.
altering = alter_END;
browser_window_change_text_selection
(bw, start, &new_pos);
i = -1;
}
}
}
}
}
free(click_boxes);
return;
}
void browser_window_clear_text_selection(struct browser_window *bw)
{
struct box_position *old_start;
struct box_position *old_end;
assert(bw->current_content->type == CONTENT_HTML);
old_start = &(bw->current_content->data.html.text_selection.start);
old_end = &(bw->current_content->data.html.text_selection.end);
if (bw->current_content->data.html.text_selection.selected == 1) {
bw->current_content->data.html.text_selection.selected = 0;
browser_window_redraw_boxes(bw, old_start, old_end);
}
bw->current_content->data.html.text_selection.altering =
alter_UNKNOWN;
}
void browser_window_change_text_selection(struct browser_window *bw,
struct box_position *new_start,
struct box_position *new_end)
{
struct box_position start;
struct box_position end;
assert(bw->current_content->type == CONTENT_HTML);
memcpy(&start,
&(bw->current_content->data.html.text_selection.start),
sizeof(struct box_position));
memcpy(&end, &(bw->current_content->data.html.text_selection.end),
sizeof(struct box_position));
if (!box_position_eq(new_start, &start)) {
if (box_position_lt(new_start, &start))
browser_window_redraw_boxes(bw, new_start, &start);
else
browser_window_redraw_boxes(bw, &start, new_start);
memcpy(&start, new_start, sizeof(struct box_position));
}
if (!box_position_eq(new_end, &end)) {
if (box_position_lt(new_end, &end))
browser_window_redraw_boxes(bw, new_end, &end);
else
browser_window_redraw_boxes(bw, &end, new_end);
memcpy(&end, new_end, sizeof(struct box_position));
}
memcpy(&(bw->current_content->data.html.text_selection.start),
&start, sizeof(struct box_position));
memcpy(&(bw->current_content->data.html.text_selection.end), &end,
sizeof(struct box_position));
bw->current_content->data.html.text_selection.selected = 1;
}
int box_position_lt(struct box_position *x, struct box_position *y)
{
return (x->plot_index < y->plot_index ||
(x->plot_index == y->plot_index
&& x->char_offset < y->char_offset));
}
int box_position_gt(struct box_position *x, struct box_position *y)
{
return (x->plot_index > y->plot_index ||
(x->plot_index == y->plot_index
&& x->char_offset > y->char_offset));
}
int box_position_eq(struct box_position *x, struct box_position *y)
{
return (x->plot_index == y->plot_index
&& x->char_offset == y->char_offset);
}
int box_position_distance(struct box_position *x, struct box_position *y)
{
int dx = (y->actual_box_x + y->pixel_offset)
- (x->actual_box_x + x->pixel_offset);
int dy = (y->actual_box_y + y->box->height / 2)
- (x->actual_box_y + x->box->height / 2);
return dx * dx + dy * dy;
}
unsigned long redraw_min_x = LONG_MAX;
unsigned long redraw_min_y = LONG_MAX;
unsigned long redraw_max_x = 0;
unsigned long redraw_max_y = 0;
int redraw_box_list(struct browser_window *bw, struct box *current,
unsigned long x, unsigned long y,
struct box_position *start, struct box_position *end,
int *plot)
{
struct box *c;
if (current == start->box)
*plot = 1;
if (*plot >= 1 && current->type == BOX_INLINE) {
unsigned long minx = x + current->x;
unsigned long miny = y + current->y;
unsigned long maxx = x + current->x + current->width;
unsigned long maxy = y + current->y + current->height;
if (minx < redraw_min_x)
redraw_min_x = minx;
if (miny < redraw_min_y)
redraw_min_y = miny;
if (maxx > redraw_max_x)
redraw_max_x = maxx;
if (maxy > redraw_max_y)
redraw_max_y = maxy;
*plot = 2;
}
if (current == end->box)
return 1;
for (c = current->children; c != 0; c = c->next)
if (c->type != BOX_FLOAT_LEFT
&& c->type != BOX_FLOAT_RIGHT)
if (redraw_box_list
(bw, c, x + current->x, y + current->y, start,
end, plot) == 1)
return 1;
for (c = current->float_children; c != 0; c = c->next_float)
if (redraw_box_list(bw, c, x + current->x, y + current->y,
start, end, plot) == 1)
return 1;
return 0;
}
void browser_window_redraw_boxes(struct browser_window *bw,
struct box_position *start,
struct box_position *end)
{
int plot = 0;
assert(bw->current_content->type == CONTENT_HTML);
if (box_position_eq(start, end))
return;
redraw_min_x = LONG_MAX;
redraw_min_y = LONG_MAX;
redraw_max_x = 0;
redraw_max_y = 0;
redraw_box_list(bw, bw->current_content->data.html.layout,
0, 0, start, end, &plot);
if (plot == 2)
gui_window_redraw(bw->window, redraw_min_x, redraw_min_y,
redraw_max_x, redraw_max_y);
}
/**
* Collect controls and submit a form.
*/
void browser_form_submit(struct browser_window *bw, struct form *form,
struct form_control *submit_button)
{
char *data = 0, *url = 0, *url1 = 0, *base;
struct form_successful_control *success;
assert(form);
assert(bw->current_content->type == CONTENT_HTML);
success = form_successful_controls(form, submit_button);
base = bw->current_content->data.html.base_url;
switch (form->method) {
case method_GET:
data = form_url_encode(success);
url = xcalloc(1, strlen(form->action) + strlen(data) + 2);
if(form->action[strlen(form->action)-1] == '?') {
sprintf(url, "%s%s", form->action, data);
}
else {
sprintf(url, "%s?%s", form->action, data);
}
url1 = url_join(url, base);
if (!url1)
break;
browser_window_go(bw, url1);
break;
case method_POST_URLENC:
data = form_url_encode(success);
url = url_join(form->action, base);
if (!url)
break;
browser_window_go_post(bw, url, data, 0, true);
break;
case method_POST_MULTIPART:
url = url_join(form->action, base);
if (!url)
break;
browser_window_go_post(bw, url, 0, success, true);
break;
default:
assert(0);
}
form_free_successful(success);
free(data);
free(url);
free(url1);
}
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