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html: Handle canvas in redraw

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Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
This commit is contained in:
Daniel Silverstone 2020-05-22 16:00:46 +01:00
parent 937894d654
commit 334b498d5c
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GPG Key ID: C30DF439F2987D74
1 changed files with 29 additions and 1 deletions
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30
content/handlers/html/redraw.c
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@ -40,6 +40,7 @@
#include "utils/messages.h"
#include "utils/utils.h"
#include "utils/nsoption.h"
#include "utils/corestrings.h"
#include "netsurf/content.h"
#include "netsurf/browser_window.h"
#include "netsurf/plotters.h"
@ -1242,6 +1243,9 @@ bool html_redraw_box(const html_content *html, struct box *box,
css_computed_clip_rect css_rect;
enum css_overflow_e overflow_x = CSS_OVERFLOW_VISIBLE;
enum css_overflow_e overflow_y = CSS_OVERFLOW_VISIBLE;
dom_exception exc;
dom_html_element_type tag_type;
if (html_redraw_printing && (box->flags & PRINTED))
return true;
@ -1743,6 +1747,15 @@ bool html_redraw_box(const html_content *html, struct box *box,
return false;
}
if (box->node != NULL) {
exc = dom_html_element_get_tag_type(box->node, &tag_type);
if (exc != DOM_NO_ERR) {
tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN;
}
} else {
tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN;
}
if (box->object && width != 0 && height != 0) {
struct content_redraw_data obj_data;
@ -1796,7 +1809,22 @@ bool html_redraw_box(const html_content *html, struct box *box,
obj, sizeof(obj) - 1) != NSERROR_OK)
return false;
}
} else if (tag_type == DOM_HTML_ELEMENT_TYPE_CANVAS &&
box->node != NULL &&
box->flags & REPLACE_DIM) {
/* Canvas to draw */
struct bitmap *bitmap = NULL;
exc = dom_node_get_user_data(box->node,
corestring_dom___ns_key_canvas_node_data,
&bitmap);
if (exc != DOM_NO_ERR) {
bitmap = NULL;
}
if (bitmap != NULL &&
ctx->plot->bitmap(ctx, bitmap, x + padding_left, y + padding_top,
width, height, current_background_color,
BITMAPF_NONE) != NSERROR_OK)
return false;
} else if (box->iframe) {
/* Offset is passed to browser window redraw unscaled */
browser_window_redraw(box->iframe,