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netsurf/render/box.c

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/**
* $Id: box.c,v 1.29 2003/01/07 18:21:58 bursa Exp $
*/
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libxml/HTMLparser.h"
#include "libutf-8/utf-8.h"
#include "netsurf/render/css.h"
#include "netsurf/riscos/font.h"
#include "netsurf/render/box.h"
#include "netsurf/render/utils.h"
#include "netsurf/utils/log.h"
/**
* internal functions
*/
struct box* input(xmlNode * n, struct css_style* style, struct form* current_form);
void box_add_child(struct box * parent, struct box * child);
struct box * box_create(xmlNode * node, box_type type, struct css_style * style,
const char *href);
char * tolat1(const xmlChar * s);
struct box * convert_xml_to_box(xmlNode * n, struct css_style * parent_style,
struct css_stylesheet * stylesheet,
struct css_selector ** selector, unsigned int depth,
struct box * parent, struct box * inline_container,
const char *href, struct font_set *fonts,
struct gui_gadget* current_select, struct formoption* current_option,
struct gui_gadget* current_textarea, struct form* current_form,
struct page_elements* elements);
struct css_style * box_get_style(struct css_stylesheet * stylesheet, struct css_style * parent_style,
xmlNode * n, struct css_selector * selector, unsigned int depth);
void box_normalise_block(struct box *block);
void box_normalise_table(struct box *table);
void box_normalise_table_row_group(struct box *row_group);
void box_normalise_table_row(struct box *row);
void box_normalise_inline_container(struct box *cont);
/**
* add a child to a box tree node
*/
void box_add_child(struct box * parent, struct box * child)
{
if (parent->children != 0) { /* has children already */
parent->last->next = child;
child->prev = parent->last;
} else { /* this is the first child */
parent->children = child;
child->prev = 0;
}
parent->last = child;
child->parent = parent;
}
/**
* create a box tree node
*/
struct box * box_create(xmlNode * node, box_type type, struct css_style * style,
const char *href)
{
struct box * box = xcalloc(1, sizeof(struct box));
box->type = type;
box->node = node;
box->style = style;
box->width = UNKNOWN_WIDTH;
box->max_width = UNKNOWN_MAX_WIDTH;
box->text = 0;
box->href = href;
box->length = 0;
box->columns = 1;
box->next = 0;
box->prev = 0;
box->children = 0;
box->last = 0;
box->parent = 0;
box->float_children = 0;
box->next_float = 0;
box->col = 0;
box->font = 0;
box->gadget = 0;
box->img = 0;
return box;
}
char * tolat1(const xmlChar * s)
{
char *d = xcalloc(strlen((char*)s) + 1, sizeof(char));
char *d0 = d;
unsigned int u, chars;
while (*s != 0) {
u = sgetu8((unsigned char*)s, (int*) &chars);
s += chars;
if (u == 0x09 || u == 0x0a || u == 0x0d)
*d = ' ';
else if ((0x20 <= u && u <= 0x7f) || (0xa0 <= u && u <= 0xff))
*d = u;
else
*d = '?';
d++;
}
*d = 0;
return d0;
}
/**
* make a box tree with style data from an xml tree
*
* arguments:
* n xml tree
* parent_style style at this point in xml tree
* stylesheet stylesheet to use
* selector element selector hierachy to this point
* depth depth in xml tree
* parent parent in box tree
* inline_container current inline container box, or 0
*
* returns:
* updated current inline container
*/
void xml_to_box(xmlNode * n, struct css_style * parent_style,
struct css_stylesheet * stylesheet,
struct css_selector ** selector, unsigned int depth,
struct box * parent, struct box * inline_container,
const char *href, struct font_set *fonts,
struct gui_gadget* current_select, struct formoption* current_option,
struct gui_gadget* current_textarea, struct form* current_form,
struct page_elements* elements)
{
LOG(("node %p", n));
convert_xml_to_box(n, parent_style, stylesheet,
selector, depth, parent, inline_container, href, fonts, current_select, current_option,
current_textarea, current_form, elements);
LOG(("normalising"));
box_normalise_block(parent->children);
}
struct box * convert_xml_to_box(xmlNode * n, struct css_style * parent_style,
struct css_stylesheet * stylesheet,
struct css_selector ** selector, unsigned int depth,
struct box * parent, struct box * inline_container,
const char *href, struct font_set *fonts,
struct gui_gadget* current_select, struct formoption* current_option,
struct gui_gadget* current_textarea, struct form* current_form,
struct page_elements* elements)
{
struct box * box = 0;
struct box * inline_container_c;
struct css_style * style;
xmlNode * c;
char * s;
char * text = 0;
assert(n != 0 && parent_style != 0 && stylesheet != 0 && selector != 0 &&
parent != 0 && fonts != 0);
LOG(("depth %i, node %p, node type %i", depth, n, n->type));
gui_multitask();
if (n->type == XML_ELEMENT_NODE) {
/* work out the style for this element */
*selector = xrealloc(*selector, (depth + 1) * sizeof(struct css_selector));
(*selector)[depth].element = (const char *) n->name;
(*selector)[depth].class = (*selector)[depth].id = 0;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "class"))) {
(*selector)[depth].class = s;
free(s);
}
style = box_get_style(stylesheet, parent_style, n, *selector, depth + 1);
LOG(("display: %s", css_display_name[style->display]));
if (style->display == CSS_DISPLAY_NONE)
return inline_container;
/* special elements */
if (strcmp((const char *) n->name, "a") == 0) {
if ((s = (char *) xmlGetProp(n, (xmlChar *) "href")))
href = s;
} else if (strcmp((const char *) n->name, "form") == 0) {
struct form* form = box_form(n);
current_form = form;
add_form_element(elements, form);
} else if (strcmp((const char *) n->name, "img") == 0) {
LOG(("image"));
box = box_image(n, style, href);
add_img_element(elements, box->img);
} else if (strcmp((const char *) n->name, "textarea") == 0) {
char * content = xmlNodeGetContent(n);
char * thistext = squash_whitespace(tolat1(content)); /* squash ? */
LOG(("textarea"));
box = box_textarea(n, style, current_form);
current_textarea = box->gadget;
add_gadget_element(elements, box->gadget);
textarea_addtext(current_textarea, thistext);
free(content);
} else if (strcmp((const char *) n->name, "select") == 0) {
LOG(("select"));
box = box_select(n, style, current_form);
current_select = box->gadget;
add_gadget_element(elements, box->gadget);
for (c = n->children; c != 0; c = c->next) {
if (strcmp((const char *) c->name, "option") == 0) {
char * content = xmlNodeGetContent(c);
char * thistext = tolat1(content);
LOG(("option"));
current_option = box_option(c, style, current_select);
option_addtext(current_option, thistext);
free(content);
}
}
} else if (strcmp((const char *) n->name, "input") == 0) {
LOG(("input"));
box = box_input(n, style, current_form, elements);
}
/* special elements must be inline or block */
if (box != 0 && style->display != CSS_DISPLAY_INLINE)
style->display = CSS_DISPLAY_BLOCK;
} else if (n->type == XML_TEXT_NODE) {
text = squash_whitespace(tolat1(n->content));
if (text[0] == ' ' && text[1] == 0) {
if (inline_container != 0) {
assert(inline_container->last != 0);
inline_container->last->space = 1;
}
xfree(text);
return inline_container;
}
}
if (n->type == XML_TEXT_NODE ||
(box != 0 && style->display == CSS_DISPLAY_INLINE) ||
(n->type == XML_ELEMENT_NODE && (style->float_ == CSS_FLOAT_LEFT ||
style->float_ == CSS_FLOAT_RIGHT))) {
/* text nodes are converted to inline boxes, wrapped in an inline container block */
if (inline_container == 0) {
/* this is the first inline node: make a container */
inline_container = xcalloc(1, sizeof(struct box));
inline_container->type = BOX_INLINE_CONTAINER;
box_add_child(parent, inline_container);
}
if (n->type == XML_TEXT_NODE) {
LOG(("text node"));
box = box_create(n, BOX_INLINE, parent_style, href);
box_add_child(inline_container, box);
box->length = strlen(text);
if (text[0] == ' ') {
box->length--;
memmove(text, text + 1, box->length);
if (box->prev != 0)
box->prev->space = 1;
}
if (text[box->length - 1] == ' ') {
box->space = 1;
box->length--;
} else {
box->space = 0;
}
box->text = text;
box->font = font_open(fonts, box->style);
} else if (style->float_ == CSS_FLOAT_LEFT || style->float_ == CSS_FLOAT_RIGHT) {
LOG(("float"));
parent = box_create(0, BOX_FLOAT_LEFT, 0, href);
if (style->float_ == CSS_FLOAT_RIGHT) parent->type = BOX_FLOAT_RIGHT;
box_add_child(inline_container, parent);
style->float_ = CSS_FLOAT_NONE;
if (style->display == CSS_DISPLAY_INLINE)
style->display = CSS_DISPLAY_BLOCK;
} else {
assert(box != 0);
box_add_child(inline_container, box);
return inline_container;
}
}
if (n->type == XML_ELEMENT_NODE) {
switch (style->display) {
case CSS_DISPLAY_BLOCK: /* blocks get a node in the box tree */
if (box == 0)
box = box_create(n, BOX_BLOCK, style, href);
else
box->type = BOX_BLOCK;
box_add_child(parent, box);
inline_container_c = 0;
for (c = n->children; c != 0; c = c->next)
inline_container_c = convert_xml_to_box(c, style, stylesheet,
selector, depth + 1, box, inline_container_c,
href, fonts, current_select, current_option,
current_textarea, current_form, elements);
inline_container = 0;
break;
case CSS_DISPLAY_INLINE: /* inline elements get no box, but their children do */
assert(box == 0); /* special inline elements have already been
added to the inline container above */
for (c = n->children; c != 0; c = c->next)
inline_container = convert_xml_to_box(c, style, stylesheet,
selector, depth + 1, parent, inline_container,
href, fonts, current_select, current_option,
current_textarea, current_form, elements);
break;
case CSS_DISPLAY_TABLE:
box = box_create(n, BOX_TABLE, style, href);
box_add_child(parent, box);
for (c = n->children; c != 0; c = c->next)
convert_xml_to_box(c, style, stylesheet,
selector, depth + 1, box, 0,
href, fonts, current_select, current_option,
current_textarea, current_form, elements);
inline_container = 0;
break;
case CSS_DISPLAY_TABLE_ROW_GROUP:
case CSS_DISPLAY_TABLE_HEADER_GROUP:
case CSS_DISPLAY_TABLE_FOOTER_GROUP:
box = box_create(n, BOX_TABLE_ROW_GROUP, style, href);
box_add_child(parent, box);
inline_container_c = 0;
for (c = n->children; c != 0; c = c->next)
inline_container_c = convert_xml_to_box(c, style, stylesheet,
selector, depth + 1, box, inline_container_c,
href, fonts, current_select, current_option,
current_textarea, current_form, elements);
inline_container = 0;
break;
case CSS_DISPLAY_TABLE_ROW:
box = box_create(n, BOX_TABLE_ROW, style, href);
box_add_child(parent, box);
for (c = n->children; c != 0; c = c->next)
convert_xml_to_box(c, style, stylesheet,
selector, depth + 1, box, 0,
href, fonts, current_select, current_option,
current_textarea, current_form, elements);
inline_container = 0;
break;
case CSS_DISPLAY_TABLE_CELL:
box = box_create(n, BOX_TABLE_CELL, style, href);
if ((s = (char *) xmlGetProp(n, (xmlChar *) "colspan"))) {
if ((box->columns = strtol(s, 0, 10)) == 0)
box->columns = 1;
} else
box->columns = 1;
box_add_child(parent, box);
inline_container_c = 0;
for (c = n->children; c != 0; c = c->next)
inline_container_c = convert_xml_to_box(c, style, stylesheet,
selector, depth + 1, box, inline_container_c,
href, fonts, current_select, current_option,
current_textarea, current_form, elements);
inline_container = 0;
break;
default:
break;
}
}
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
}
/**
* get the style for an element
*/
struct css_style * box_get_style(struct css_stylesheet * stylesheet, struct css_style * parent_style,
xmlNode * n, struct css_selector * selector, unsigned int depth)
{
struct css_style * style = xcalloc(1, sizeof(struct css_style));
char * s;
memcpy(style, parent_style, sizeof(struct css_style));
css_get_style(stylesheet, selector, depth, style);
if ((s = (char *) xmlGetProp(n, (xmlChar *) "align"))) {
if (strcmp((const char *) n->name, "table") == 0 ||
strcmp((const char *) n->name, "img") == 0) {
if (stricmp(s, "left") == 0) style->float_ = CSS_FLOAT_LEFT;
else if (stricmp(s, "right") == 0) style->float_ = CSS_FLOAT_RIGHT;
} else {
if (stricmp(s, "left") == 0) style->text_align = CSS_TEXT_ALIGN_LEFT;
else if (stricmp(s, "center") == 0) style->text_align = CSS_TEXT_ALIGN_CENTER;
else if (stricmp(s, "right") == 0) style->text_align = CSS_TEXT_ALIGN_RIGHT;
}
free(s);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "bgcolor"))) {
unsigned int r, g, b;
if (s[0] == '#' && sscanf(s + 1, "%2x%2x%2x", &r, &g, &b) == 3)
style->background_color = (b << 16) | (g << 8) | r;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "clear"))) {
if (stricmp(s, "all") == 0) style->clear = CSS_CLEAR_BOTH;
else if (stricmp(s, "left") == 0) style->clear = CSS_CLEAR_LEFT;
else if (stricmp(s, "right") == 0) style->clear = CSS_CLEAR_RIGHT;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "color"))) {
unsigned int r, g, b;
if (s[0] == '#' && sscanf(s + 1, "%2x%2x%2x", &r, &g, &b) == 3)
style->color = (b << 16) | (g << 8) | r;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "height"))) {
style->height.height = CSS_HEIGHT_LENGTH;
style->height.length.unit = CSS_UNIT_PX;
style->height.length.value = atof(s);
free(s);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "width"))) {
if (strrchr(s, '%')) {
style->width.width = CSS_WIDTH_PERCENT;
style->width.value.percent = atof(s);
} else {
style->width.width = CSS_WIDTH_LENGTH;
style->width.value.length.unit = CSS_UNIT_PX;
style->width.value.length.value = atof(s);
}
free(s);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "style"))) {
struct css_style * astyle = xcalloc(1, sizeof(struct css_style));
memcpy(astyle, &css_empty_style, sizeof(struct css_style));
css_parse_property_list(astyle, s);
css_cascade(style, astyle);
free(astyle);
free(s);
}
return style;
}
/**
* print a box tree to standard output
*/
void box_dump(struct box * box, unsigned int depth)
{
unsigned int i;
struct box * c;
for (i = 0; i < depth; i++)
fprintf(stderr, " ");
fprintf(stderr, "x%li y%li w%li h%li ", box->x, box->y, box->width, box->height);
if (box->max_width != UNKNOWN_MAX_WIDTH)
fprintf(stderr, "min%lu max%lu ", box->min_width, box->max_width);
switch (box->type) {
case BOX_BLOCK: fprintf(stderr, "BOX_BLOCK "); break;
case BOX_INLINE_CONTAINER: fprintf(stderr, "BOX_INLINE_CONTAINER "); break;
case BOX_INLINE: if (box->text != 0)
fprintf(stderr, "BOX_INLINE '%.*s' ",
(int) box->length, box->text);
else
fprintf(stderr, "BOX_INLINE (special) ");
break;
case BOX_TABLE: fprintf(stderr, "BOX_TABLE "); break;
case BOX_TABLE_ROW: fprintf(stderr, "BOX_TABLE_ROW "); break;
case BOX_TABLE_CELL: fprintf(stderr, "BOX_TABLE_CELL [columns %i] ",
box->columns); break;
case BOX_TABLE_ROW_GROUP: fprintf(stderr, "BOX_TABLE_ROW_GROUP "); break;
case BOX_FLOAT_LEFT: fprintf(stderr, "BOX_FLOAT_LEFT "); break;
case BOX_FLOAT_RIGHT: fprintf(stderr, "BOX_FLOAT_RIGHT "); break;
default: fprintf(stderr, "Unknown box type ");
}
if (box->node)
fprintf(stderr, "<%s> ", box->node->name);
if (box->style)
css_dump_style(box->style);
if (box->href != 0)
fprintf(stderr, " -> '%s'", box->href);
fprintf(stderr, "\n");
for (c = box->children; c != 0; c = c->next)
box_dump(c, depth + 1);
}
/**
* ensure the box tree is correctly nested
*
* parent permitted child nodes
* BLOCK BLOCK, INLINE_CONTAINER, TABLE
* INLINE_CONTAINER INLINE, FLOAT_LEFT, FLOAT_RIGHT
* INLINE none
* TABLE at least 1 TABLE_ROW_GROUP
* TABLE_ROW_GROUP at least 1 TABLE_ROW
* TABLE_ROW at least 1 TABLE_CELL
* TABLE_CELL BLOCK, INLINE_CONTAINER, TABLE (same as BLOCK)
* FLOAT_(LEFT|RIGHT) exactly 1 BLOCK or TABLE
*/
void box_normalise_block(struct box *block)
{
struct box *child;
struct box *next_child;
struct box *table;
struct css_style *style;
assert(block != 0);
assert(block->type == BOX_BLOCK || block->type == BOX_TABLE_CELL);
LOG(("block %p, block->type", block, block->type));
for (child = block->children; child != 0; child = next_child) {
LOG(("child %p, child->type = %d", child, child->type));
next_child = child->next; /* child may be destroyed */
switch (child->type) {
case BOX_BLOCK:
/* ok */
box_normalise_block(child);
break;
case BOX_INLINE_CONTAINER:
box_normalise_inline_container(child);
break;
case BOX_TABLE:
box_normalise_table(child);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_ROW:
case BOX_TABLE_CELL:
/* insert implied table */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, block->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
table = box_create(0, BOX_TABLE, style, block->href);
if (child->prev == 0)
block->children = table;
else
child->prev->next = table;
table->prev = child->prev;
while (child != 0 && (
child->type == BOX_TABLE_ROW_GROUP ||
child->type == BOX_TABLE_ROW ||
child->type == BOX_TABLE_CELL)) {
box_add_child(table, child);
child = child->next;
}
table->last->next = 0;
table->next = next_child = child;
table->parent = block;
box_normalise_table(table);
break;
default:
assert(0);
}
}
LOG(("block %p done", block));
}
void box_normalise_table(struct box *table)
{
struct box *child;
struct box *next_child;
struct box *row_group;
struct css_style *style;
assert(table != 0);
assert(table->type == BOX_TABLE);
LOG(("table %p", table));
for (child = table->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_TABLE_ROW_GROUP:
/* ok */
box_normalise_table_row_group(child);
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW:
case BOX_TABLE_CELL:
/* insert implied table row group */
/* fprintf(stderr, "inserting implied table row group\n"); */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, table->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
row_group = box_create(0, BOX_TABLE_ROW_GROUP, style, table->href);
if (child->prev == 0)
table->children = row_group;
else
child->prev->next = row_group;
row_group->prev = child->prev;
while (child != 0 && (
child->type == BOX_BLOCK ||
child->type == BOX_INLINE_CONTAINER ||
child->type == BOX_TABLE ||
child->type == BOX_TABLE_ROW ||
child->type == BOX_TABLE_CELL)) {
box_add_child(row_group, child);
child = child->next;
}
row_group->last->next = 0;
row_group->next = next_child = child;
row_group->parent = table;
box_normalise_table_row_group(row_group);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
default:
fprintf(stderr, "%i\n", child->type);
assert(0);
}
}
if (table->children == 0) {
LOG(("table->children == 0, removing"));
if (table->prev == 0)
table->parent->children = table->next;
else
table->prev->next = table->next;
if (table->next != 0)
table->next->prev = table->prev;
box_free_box(table);
}
LOG(("table %p done", table));
}
void box_normalise_table_row_group(struct box *row_group)
{
struct box *child;
struct box *next_child;
struct box *row;
struct css_style *style;
assert(row_group != 0);
assert(row_group->type == BOX_TABLE_ROW_GROUP);
LOG(("row_group %p", row_group));
for (child = row_group->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_TABLE_ROW:
/* ok */
box_normalise_table_row(child);
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_CELL:
/* insert implied table row */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, row_group->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
row = box_create(0, BOX_TABLE_ROW, style, row_group->href);
if (child->prev == 0)
row_group->children = row;
else
child->prev->next = row;
row->prev = child->prev;
while (child != 0 && (
child->type == BOX_BLOCK ||
child->type == BOX_INLINE_CONTAINER ||
child->type == BOX_TABLE ||
child->type == BOX_TABLE_ROW_GROUP ||
child->type == BOX_TABLE_CELL)) {
box_add_child(row, child);
child = child->next;
}
row->last->next = 0;
row->next = next_child = child;
row->parent = row_group;
box_normalise_table_row(row);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
default:
assert(0);
}
}
if (row_group->children == 0) {
LOG(("row_group->children == 0, removing"));
if (row_group->prev == 0)
row_group->parent->children = row_group->next;
else
row_group->prev->next = row_group->next;
if (row_group->next != 0)
row_group->next->prev = row_group->prev;
box_free_box(row_group);
}
LOG(("row_group %p done", row_group));
}
void box_normalise_table_row(struct box *row)
{
struct box *child;
struct box *next_child;
struct box *cell;
struct css_style *style;
unsigned int columns = 0;
assert(row != 0);
assert(row->type == BOX_TABLE_ROW);
LOG(("row %p", row));
for (child = row->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_TABLE_CELL:
/* ok */
box_normalise_block(child);
columns += child->columns;
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_ROW:
/* insert implied table cell */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, row->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
cell = box_create(0, BOX_TABLE_CELL, style, row->href);
if (child->prev == 0)
row->children = cell;
else
child->prev->next = cell;
cell->prev = child->prev;
while (child != 0 && (
child->type == BOX_BLOCK ||
child->type == BOX_INLINE_CONTAINER ||
child->type == BOX_TABLE ||
child->type == BOX_TABLE_ROW_GROUP ||
child->type == BOX_TABLE_ROW)) {
box_add_child(cell, child);
child = child->next;
}
cell->last->next = 0;
cell->next = next_child = child;
cell->parent = row;
box_normalise_block(cell);
columns++;
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
default:
assert(0);
}
}
if (row->parent->parent->columns < columns)
row->parent->parent->columns = columns;
if (row->children == 0) {
LOG(("row->children == 0, removing"));
if (row->prev == 0)
row->parent->children = row->next;
else
row->prev->next = row->next;
if (row->next != 0)
row->next->prev = row->prev;
box_free_box(row);
}
LOG(("row %p done", row));
}
void box_normalise_inline_container(struct box *cont)
{
struct box *child;
struct box *next_child;
assert(cont != 0);
assert(cont->type == BOX_INLINE_CONTAINER);
LOG(("cont %p", cont));
for (child = cont->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_INLINE:
/* ok */
break;
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* ok */
assert(child->children != 0);
switch (child->children->type) {
case BOX_BLOCK:
box_normalise_block(child->children);
break;
case BOX_TABLE:
box_normalise_table(child->children);
break;
default:
assert(0);
}
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_ROW:
case BOX_TABLE_CELL:
default:
assert(0);
}
}
LOG(("cont %p done", cont));
}
void gadget_free(struct gui_gadget* g)
{
struct formoption* o;
if (g->name != 0)
xfree(g->name);
switch (g->type)
{
case GADGET_HIDDEN:
if (g->data.hidden.value != 0)
xfree(g->data.hidden.value);
break;
case GADGET_RADIO:
if (g->data.checkbox.value != 0)
xfree(g->data.radio.value);
break;
case GADGET_CHECKBOX:
if (g->data.checkbox.value != 0)
xfree(g->data.checkbox.value);
break;
case GADGET_TEXTAREA:
if (g->data.textarea.text != 0)
xfree(g->data.textarea.text);
break;
case GADGET_TEXTBOX:
gui_remove_gadget(g);
if (g->data.textbox.text != 0)
xfree(g->data.textbox.text);
break;
case GADGET_ACTIONBUTTON:
if (g->data.actionbutt.label != 0)
xfree(g->data.actionbutt.label);
break;
case GADGET_SELECT:
o = g->data.select.items;
while (o != NULL)
{
if (o->text != 0)
xfree(o->text);
if (o->value != 0)
xfree(o->value);
xfree(o);
o = o->next;
}
break;
}
}
/**
* free a box tree recursively
*/
void box_free(struct box *box)
{
/* free children first */
if (box->children != 0)
box_free(box->children);
/* then siblings */
if (box->next != 0)
box_free(box->next);
/* last this box */
box_free_box(box);
}
void box_free_box(struct box *box)
{
// if (box->style != 0)
// free(box->style);
if (box->gadget != 0)
{
gadget_free(box->gadget);
free((void*)box->gadget);
}
if (box->img != 0)
{
free((void*)box->img);
}
if (box->text != 0)
free((void*)box->text);
/* only free href if we're the top most user */
if (box->href != 0)
{
if (box->parent == 0)
free((void*)box->href);
else if (box->parent->href != box->href)
free((void*)box->href);
}
}
struct box* box_image(xmlNode * n, struct css_style* style, char* href)
{
struct box* box = 0;
char* s;
box = box_create(n, BOX_INLINE, style, href);
box->img = xcalloc(1, sizeof(struct img));
box->text = 0;
box->length = 0;
box->font = 0;
if (style->width.width == CSS_WIDTH_AUTO) {
/* should find the real image width */
style->width.width = CSS_WIDTH_LENGTH;
style->width.value.length.unit = CSS_UNIT_PX;
style->width.value.length.value = 24;
}
if (style->height.height == CSS_HEIGHT_AUTO) {
/* should find the real image height */
style->height.height = CSS_HEIGHT_LENGTH;
style->height.length.unit = CSS_UNIT_PX;
style->height.length.value = 24;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "alt")))
{
box->img->alt = s;
}
return box;
}
struct box* box_textarea(xmlNode* n, struct css_style* style, struct form* current_form)
{
struct box* box = 0;
char* s;
LOG(("creating box"));
box = box_create(n, BOX_INLINE, style, NULL);
LOG(("creating gadget"));
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
box->gadget->type = GADGET_TEXTAREA;
box->gadget->form = current_form;
box->text = 0;
box->length = 0;
box->font = 0;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "cols")))
{
box->gadget->data.textarea.cols = atoi(s);
free(s);
}
else
box->gadget->data.textarea.cols = 40;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "rows")))
{
box->gadget->data.textarea.rows = atoi(s);
free(s);
}
else
box->gadget->data.textarea.rows = 16;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "name")))
{
box->gadget->name = s;
}
return box;
}
struct box* box_select(xmlNode * n, struct css_style* style, struct form* current_form)
{
struct box* box = 0;
char* s;
LOG(("creating box"));
box = box_create(n, BOX_INLINE, style, NULL);
LOG(("creating gadget"));
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
box->gadget->type = GADGET_SELECT;
box->gadget->form = current_form;
box->text = 0;
box->length = 0;
box->font = 0;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "size")))
{
box->gadget->data.select.size = atoi(s);
free(s);
}
else
box->gadget->data.select.size = 1;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "multiple"))) {
box->gadget->data.select.multiple = 1;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "name"))) {
box->gadget->name = s;
}
box->gadget->data.select.items = NULL;
box->gadget->data.select.numitems = 0;
/* to do: multiple, name */
LOG(("returning from select"));
return box;
}
struct formoption* box_option(xmlNode* n, struct css_style* style, struct gui_gadget* current_select)
{
struct formoption* option;
char* s;
assert(current_select != 0);
LOG(("realloc option"));
if (current_select->data.select.items == 0)
{
option = xcalloc(1, sizeof(struct formoption));
current_select->data.select.items = option;
}
else
{
struct formoption* current;
option = xcalloc(1, sizeof(struct formoption));
current = current_select->data.select.items;
while (current->next != 0)
current = current->next;
current->next = option;
}
/* TO DO: set selected / value here */
if ((s = (char *) xmlGetProp(n, (xmlChar *) "selected"))) {
option->selected = -1;
free(s);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "value"))) {
option->value = s;
}
LOG(("returning"));
return option;
}
void textarea_addtext(struct gui_gadget* textarea, char* text)
{
assert (textarea != 0);
assert (text != 0);
if (textarea->data.textarea.text == 0)
{
textarea->data.textarea.text = strdup(text);
}
else
{
textarea->data.textarea.text = xrealloc(textarea->data.textarea.text, strlen(textarea->data.textarea.text) + strlen(text) + 1);
strcat(textarea->data.textarea.text, text);
}
}
void option_addtext(struct formoption* option, char* text)
{
assert(option != 0);
assert(text != 0);
if (option->text == 0)
{
LOG(("option->text is 0"));
option->text = strdup(text);
}
else
{
LOG(("option->text is realloced"));
option->text = xrealloc(option->text, strlen(option->text) + strlen(text) + 1);
strcat(option->text, text);
}
LOG(("returning"));
return;
}
struct box* box_input(xmlNode * n, struct css_style* style, struct form* current_form, struct page_elements* elements)
{
struct box* box = 0;
char* s;
char* type;
if ((type = (char *) xmlGetProp(n, (xmlChar *) "type")))
{
if (stricmp(type, "hidden") == 0)
{
struct gui_gadget* g = xcalloc(1, sizeof(struct gui_gadget));
g->type = GADGET_HIDDEN;
g->form = current_form;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "value"))) {
g->data.hidden.value = s;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "name"))) {
g->name = s;
}
add_gadget_element(elements, g);
}
if (stricmp(type, "checkbox") == 0 || stricmp(type, "radio") == 0)
{
box = box_create(n, BOX_INLINE, style, NULL);
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
if (type[0] == 'c')
box->gadget->type = GADGET_CHECKBOX;
else
box->gadget->type = GADGET_RADIO;
box->gadget->form = current_form;
box->text = 0;
box->length = 0;
box->font = 0;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "checked"))) {
if (type[0] == 'c')
box->gadget->data.checkbox.selected = -1;
else
box->gadget->data.radio.selected = -1;
free(s);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "value"))) {
if (type[0] == 'c')
box->gadget->data.checkbox.value = s;
else
box->gadget->data.radio.value = s;
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "name"))) {
box->gadget->name = s;
}
add_gadget_element(elements, box->gadget);
}
if (stricmp(type, "submit") == 0 || stricmp(type, "reset") == 0)
{
//style->display = CSS_DISPLAY_BLOCK;
box = box_create(n, BOX_INLINE, style, NULL);
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
box->gadget->type = GADGET_ACTIONBUTTON;
box->gadget->form = current_form;
box->text = 0;
box->length = 0;
box->font = 0;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "value"))) {
box->gadget->data.actionbutt.label = s;
}
else
{
box->gadget->data.actionbutt.label = strdup(type);
box->gadget->data.actionbutt.label[0] = toupper(type[0]);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "name"))) {
box->gadget->name = s;
}
add_gadget_element(elements, box->gadget);
}
if (stricmp(type, "text") == 0 || stricmp(type, "password") == 0)
{
//style->display = CSS_DISPLAY_BLOCK;
box = box_create(n, BOX_INLINE, style, NULL);
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
box->gadget->type = GADGET_TEXTBOX;
box->gadget->form = current_form;
box->text = 0;
box->length = 0;
box->font = 0;
box->gadget->data.textbox.maxlength = 32;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "maxlength"))) {
box->gadget->data.textbox.maxlength = atoi(s);
free(s);
}
box->gadget->data.textbox.size = box->gadget->data.textbox.maxlength;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "size"))) {
box->gadget->data.textbox.size = atoi(s);
free(s);
}
box->gadget->data.textbox.text = xcalloc(box->gadget->data.textbox.maxlength + 1, sizeof(char));
if ((s = (char *) xmlGetProp(n, (xmlChar *) "value"))) {
strncpy(box->gadget->data.textbox.text, s,
box->gadget->data.textbox.maxlength);
free(s);
}
if ((s = (char *) xmlGetProp(n, (xmlChar *) "name"))) {
box->gadget->name = s;
}
add_gadget_element(elements, box->gadget);
}
free(type);
}
return box;
}
struct form* box_form(xmlNode* n)
{
struct form* form;
char* s;
form = xcalloc(1, sizeof(struct form*));
if ((s = (char *) xmlGetProp(n, (xmlChar *) "action"))) {
form->action = s;
}
form->method = method_GET;
if ((s = (char *) xmlGetProp(n, (xmlChar *) "method"))) {
if (stricmp(s, "post") == 0)
form->method = method_POST;
xfree(s);
}
return form;
}
void add_form_element(struct page_elements* pe, struct form* f)
{
pe->forms = xrealloc(pe->forms, (pe->numForms + 1) * sizeof(struct form*));
pe->forms[pe->numForms] = f;
pe->numForms++;
}
void add_gadget_element(struct page_elements* pe, struct gadget* g)
{
pe->gadgets = xrealloc(pe->gadgets, (pe->numGadgets + 1) * sizeof(struct gui_gadget*));
pe->gadgets[pe->numGadgets] = g;
pe->numGadgets++;
}
void add_img_element(struct page_elements* pe, struct img* i)
{
pe->images = xrealloc(pe->images, (pe->numImages + 1) * sizeof(struct img*));
pe->images[pe->numImages] = i;
pe->numImages++;
}
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