diff options
Diffstat (limited to 'src/html/html_canvas_element.c')
| -rw-r--r-- | src/html/html_canvas_element.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/html/html_canvas_element.c b/src/html/html_canvas_element.c new file mode 100644 index 0000000..71d4a53 --- /dev/null +++ b/src/html/html_canvas_element.c @@ -0,0 +1,214 @@ +/* + * This file is part of libdom. + * Licensed under the MIT License, + * http://www.opensource.org/licenses/mit-license.php + * Copyright 2020 Vincent Sanders <vince@netsurf-browser.org> + */ + +#include <assert.h> +#include <stdlib.h> + +#include <dom/html/html_canvas_element.h> + +#include "html/html_document.h" +#include "html/html_canvas_element.h" + +#include "core/node.h" +#include "core/attr.h" +#include "utils/utils.h" + +static const struct dom_element_protected_vtable _protect_vtable = { + { + DOM_NODE_PROTECT_VTABLE_HTML_CANVAS_ELEMENT + }, + DOM_HTML_CANVAS_ELEMENT_PROTECT_VTABLE +}; + +/** + * Create a dom_html_canvas_element object + * + * \param params The html element creation parameters + * \param ele The returned element object + * \return DOM_NO_ERR on success, appropriate dom_exception on failure. + */ +dom_exception _dom_html_canvas_element_create( + struct dom_html_element_create_params *params, + struct dom_html_canvas_element **ele) +{ + struct dom_node_internal *node; + + *ele = malloc(sizeof(dom_html_canvas_element)); + if (*ele == NULL) + return DOM_NO_MEM_ERR; + + /* Set up vtables */ + node = (struct dom_node_internal *) *ele; + node->base.vtable = &_dom_html_element_vtable; + node->vtable = &_protect_vtable; + + return _dom_html_canvas_element_initialise(params, *ele); +} + +/** + * Initialise a dom_html_canvas_element object + * + * \param params The html element creation parameters + * \param ele The dom_html_canvas_element object + * \return DOM_NO_ERR on success, appropriate dom_exception on failure. + */ +dom_exception _dom_html_canvas_element_initialise( + struct dom_html_element_create_params *params, + struct dom_html_canvas_element *ele) +{ + return _dom_html_element_initialise(params, &ele->base); +} + +/** + * Finalise a dom_html_canvas_element object + * + * \param ele The dom_html_canvas_element object + */ +void _dom_html_canvas_element_finalise(struct dom_html_canvas_element *ele) +{ + _dom_html_element_finalise(&ele->base); +} + +/** + * Destroy a dom_html_canvas_element object + * + * \param ele The dom_html_canvas_element object + */ +void _dom_html_canvas_element_destroy(struct dom_html_canvas_element *ele) +{ + _dom_html_canvas_element_finalise(ele); + free(ele); +} + +/*------------------------------------------------------------------------*/ +/* The protected virtual functions */ + +/* The virtual function used to parse attribute value, see src/core/element.c + * for detail */ +dom_exception _dom_html_canvas_element_parse_attribute(dom_element *ele, + dom_string *name, dom_string *value, + dom_string **parsed) +{ + UNUSED(ele); + UNUSED(name); + + dom_string_ref(value); + *parsed = value; + + return DOM_NO_ERR; +} + +/* The virtual destroy function, see src/core/node.c for detail */ +void _dom_virtual_html_canvas_element_destroy(dom_node_internal *node) +{ + _dom_html_canvas_element_destroy((struct dom_html_canvas_element *) node); +} + +/* The virtual copy function, see src/core/node.c for detail */ +dom_exception _dom_html_canvas_element_copy( + dom_node_internal *old, dom_node_internal **copy) +{ + dom_html_canvas_element *new_node; + dom_exception err; + + new_node = malloc(sizeof(dom_html_canvas_element)); + if (new_node == NULL) + return DOM_NO_MEM_ERR; + + err = dom_html_canvas_element_copy_internal(old, new_node); + if (err != DOM_NO_ERR) { + free(new_node); + return err; + } + + *copy = (dom_node_internal *) new_node; + + return DOM_NO_ERR; +} + +dom_exception _dom_html_canvas_element_copy_internal( + dom_html_canvas_element *old, + dom_html_canvas_element *new) +{ + dom_exception err; + + err = dom_html_element_copy_internal(old, new); + if (err != DOM_NO_ERR) { + return err; + } + + return DOM_NO_ERR; +} + +/*-----------------------------------------------------------------------*/ +/* API functions */ + + +dom_exception +dom_html_canvas_element_get_width(dom_html_canvas_element *canvas, + dom_ulong *width) +{ + dom_exception exc; + + exc = dom_html_element_get_dom_ulong_property(&canvas->base, + "width", + SLEN("width"), + width); + + if (exc != DOM_NO_ERR) + return exc; + + if (*width == (dom_ulong)-1) { + /* width not set on the canvas, default is 300px */ + *width = 300; + } + + return DOM_NO_ERR; +} + +dom_exception +dom_html_canvas_element_set_width(dom_html_canvas_element *canvas, + dom_ulong width) +{ + return dom_html_element_set_dom_ulong_property(&canvas->base, + "width", + SLEN("width"), + width); +} + +dom_exception +dom_html_canvas_element_get_height(dom_html_canvas_element *canvas, + dom_ulong *height) +{ + dom_exception exc; + + exc = dom_html_element_get_dom_ulong_property(&canvas->base, + "height", + SLEN("height"), + height); + + if (exc != DOM_NO_ERR) + return exc; + + if (*height == (dom_ulong)-1) { + /* height not set on the canvas, default is 150px */ + *height = 150; + } + + return DOM_NO_ERR; +} + +dom_exception +dom_html_canvas_element_set_height(dom_html_canvas_element *canvas, + dom_ulong height) +{ + return dom_html_element_set_dom_ulong_property(&canvas->base, + "height", + SLEN("height"), + height); +} + |