You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
396 lines
8.5 KiB
396 lines
8.5 KiB
/*
|
|
* Copyright 2007-2008 James Bursa <bursa@users.sourceforge.net>
|
|
*
|
|
* 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
|
|
* implementation of content for image/svg using libsvgtiny.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <svgtiny.h>
|
|
|
|
#include "utils/messages.h"
|
|
#include "utils/utils.h"
|
|
#include "utils/nsurl.h"
|
|
#include "netsurf/plotters.h"
|
|
#include "netsurf/content.h"
|
|
#include "content/content_protected.h"
|
|
#include "content/content_factory.h"
|
|
|
|
#include "image/svg.h"
|
|
|
|
typedef struct svg_content {
|
|
struct content base;
|
|
|
|
struct svgtiny_diagram *diagram;
|
|
|
|
int current_width;
|
|
int current_height;
|
|
} svg_content;
|
|
|
|
|
|
|
|
static nserror svg_create_svg_data(svg_content *c)
|
|
{
|
|
c->diagram = svgtiny_create();
|
|
if (c->diagram == NULL)
|
|
goto no_memory;
|
|
|
|
c->current_width = INT_MAX;
|
|
c->current_height = INT_MAX;
|
|
|
|
return NSERROR_OK;
|
|
|
|
no_memory:
|
|
content_broadcast_error(&c->base, NSERROR_NOMEM, NULL);
|
|
return NSERROR_NOMEM;
|
|
}
|
|
|
|
|
|
/**
|
|
* Create a CONTENT_SVG.
|
|
*/
|
|
|
|
static nserror svg_create(const content_handler *handler,
|
|
lwc_string *imime_type, const struct http_parameter *params,
|
|
struct llcache_handle *llcache, const char *fallback_charset,
|
|
bool quirks, struct content **c)
|
|
{
|
|
svg_content *svg;
|
|
nserror error;
|
|
|
|
svg = calloc(1, sizeof(svg_content));
|
|
if (svg == NULL)
|
|
return NSERROR_NOMEM;
|
|
|
|
error = content__init(&svg->base, handler, imime_type, params,
|
|
llcache, fallback_charset, quirks);
|
|
if (error != NSERROR_OK) {
|
|
free(svg);
|
|
return error;
|
|
}
|
|
|
|
error = svg_create_svg_data(svg);
|
|
if (error != NSERROR_OK) {
|
|
free(svg);
|
|
return error;
|
|
}
|
|
|
|
*c = (struct content *) svg;
|
|
|
|
return NSERROR_OK;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Convert a CONTENT_SVG for display.
|
|
*/
|
|
|
|
static bool svg_convert(struct content *c)
|
|
{
|
|
/*c->title = malloc(100);
|
|
if (c->title)
|
|
snprintf(c->title, 100, messages_get("svgTitle"),
|
|
width, height, c->source_size);*/
|
|
//c->size += ?;
|
|
content_set_ready(c);
|
|
content_set_done(c);
|
|
/* Done: update status bar */
|
|
content_set_status(c, "");
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Reformat a CONTENT_SVG.
|
|
*/
|
|
|
|
static void svg_reformat(struct content *c, int width, int height)
|
|
{
|
|
svg_content *svg = (svg_content *) c;
|
|
const uint8_t *source_data;
|
|
size_t source_size;
|
|
|
|
assert(svg->diagram);
|
|
|
|
/* Avoid reformats to same width/height as we already reformatted to */
|
|
if (width != svg->current_width || height != svg->current_height) {
|
|
source_data = content__get_source_data(c, &source_size);
|
|
|
|
svgtiny_parse(svg->diagram,
|
|
(const char *)source_data,
|
|
source_size,
|
|
nsurl_access(content_get_url(c)),
|
|
width,
|
|
height);
|
|
|
|
svg->current_width = width;
|
|
svg->current_height = height;
|
|
}
|
|
|
|
c->width = svg->diagram->width;
|
|
c->height = svg->diagram->height;
|
|
}
|
|
|
|
|
|
/**
|
|
* Redraw a CONTENT_SVG.
|
|
*/
|
|
|
|
static bool
|
|
svg_redraw_internal(svg_content *svg,
|
|
int x,
|
|
int y,
|
|
int width,
|
|
int height,
|
|
const struct rect *clip,
|
|
const struct redraw_context *ctx,
|
|
float scale,
|
|
colour background_colour)
|
|
{
|
|
float transform[6];
|
|
struct svgtiny_diagram *diagram = svg->diagram;
|
|
int px, py;
|
|
unsigned int i;
|
|
plot_font_style_t fstyle = *plot_style_font;
|
|
plot_style_t pstyle;
|
|
nserror res;
|
|
|
|
assert(diagram);
|
|
|
|
transform[0] = (float) width / (float) svg->base.width;
|
|
transform[1] = 0;
|
|
transform[2] = 0;
|
|
transform[3] = (float) height / (float) svg->base.height;
|
|
transform[4] = x;
|
|
transform[5] = y;
|
|
|
|
#define BGR(c) (((svgtiny_RED((c))) | \
|
|
(svgtiny_GREEN((c)) << 8) | \
|
|
(svgtiny_BLUE((c)) << 16)))
|
|
|
|
for (i = 0; i != diagram->shape_count; i++) {
|
|
if (diagram->shape[i].path) {
|
|
/* stroke style */
|
|
if (diagram->shape[i].stroke == svgtiny_TRANSPARENT) {
|
|
pstyle.stroke_type = PLOT_OP_TYPE_NONE;
|
|
pstyle.stroke_colour = NS_TRANSPARENT;
|
|
} else {
|
|
pstyle.stroke_type = PLOT_OP_TYPE_SOLID;
|
|
pstyle.stroke_colour = BGR(diagram->shape[i].stroke);
|
|
}
|
|
pstyle.stroke_width = plot_style_int_to_fixed(
|
|
diagram->shape[i].stroke_width);
|
|
|
|
/* fill style */
|
|
if (diagram->shape[i].fill == svgtiny_TRANSPARENT) {
|
|
pstyle.fill_type = PLOT_OP_TYPE_NONE;
|
|
pstyle.fill_colour = NS_TRANSPARENT;
|
|
} else {
|
|
pstyle.fill_type = PLOT_OP_TYPE_SOLID;
|
|
pstyle.fill_colour = BGR(diagram->shape[i].fill);
|
|
}
|
|
|
|
/* draw the path */
|
|
res = ctx->plot->path(ctx,
|
|
&pstyle,
|
|
diagram->shape[i].path,
|
|
diagram->shape[i].path_length,
|
|
transform);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
|
|
} else if (diagram->shape[i].text) {
|
|
px = transform[0] * diagram->shape[i].text_x +
|
|
transform[2] * diagram->shape[i].text_y +
|
|
transform[4];
|
|
py = transform[1] * diagram->shape[i].text_x +
|
|
transform[3] * diagram->shape[i].text_y +
|
|
transform[5];
|
|
|
|
fstyle.background = 0xffffff;
|
|
fstyle.foreground = 0x000000;
|
|
fstyle.size = (8 * PLOT_STYLE_SCALE) * scale;
|
|
|
|
res = ctx->plot->text(ctx,
|
|
&fstyle,
|
|
px, py,
|
|
diagram->shape[i].text,
|
|
strlen(diagram->shape[i].text));
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef BGR
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
static bool
|
|
svg_redraw_tiled_internal(svg_content *svg,
|
|
struct content_redraw_data *data,
|
|
const struct rect *clip,
|
|
const struct redraw_context *ctx)
|
|
{
|
|
/* Tiled redraw required. SVG repeats to extents of clip
|
|
* rectangle, in x, y or both directions */
|
|
int x, y, x0, y0, x1, y1;
|
|
|
|
x = x0 = data->x;
|
|
y = y0 = data->y;
|
|
|
|
/* Find the redraw boundaries to loop within */
|
|
if (data->repeat_x) {
|
|
for (; x0 > clip->x0; x0 -= data->width);
|
|
x1 = clip->x1;
|
|
} else {
|
|
x1 = x + 1;
|
|
}
|
|
if (data->repeat_y) {
|
|
for (; y0 > clip->y0; y0 -= data->height);
|
|
y1 = clip->y1;
|
|
} else {
|
|
y1 = y + 1;
|
|
}
|
|
|
|
/* Repeatedly plot the SVG across the area */
|
|
for (y = y0; y < y1; y += data->height) {
|
|
for (x = x0; x < x1; x += data->width) {
|
|
if (!svg_redraw_internal(svg, x, y,
|
|
data->width, data->height,
|
|
clip, ctx, data->scale,
|
|
data->background_colour)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Redraw a CONTENT_SVG.
|
|
*/
|
|
static bool
|
|
svg_redraw(struct content *c,
|
|
struct content_redraw_data *data,
|
|
const struct rect *clip,
|
|
const struct redraw_context *ctx)
|
|
{
|
|
svg_content *svg = (svg_content *)c;
|
|
|
|
if ((data->width <= 0) && (data->height <= 0)) {
|
|
/* No point trying to plot SVG if it does not occupy a valid
|
|
* area */
|
|
return true;
|
|
}
|
|
|
|
if ((data->repeat_x == false) && (data->repeat_y == false)) {
|
|
/* Simple case: SVG is not tiled */
|
|
return svg_redraw_internal(svg, data->x, data->y,
|
|
data->width, data->height,
|
|
clip, ctx, data->scale,
|
|
data->background_colour);
|
|
}
|
|
|
|
return svg_redraw_tiled_internal(svg, data, clip, ctx);
|
|
}
|
|
|
|
|
|
/**
|
|
* Destroy a CONTENT_SVG and free all resources it owns.
|
|
*/
|
|
|
|
static void svg_destroy(struct content *c)
|
|
{
|
|
svg_content *svg = (svg_content *) c;
|
|
|
|
if (svg->diagram != NULL)
|
|
svgtiny_free(svg->diagram);
|
|
}
|
|
|
|
|
|
static nserror svg_clone(const struct content *old, struct content **newc)
|
|
{
|
|
svg_content *svg;
|
|
nserror error;
|
|
|
|
svg = calloc(1, sizeof(svg_content));
|
|
if (svg == NULL)
|
|
return NSERROR_NOMEM;
|
|
|
|
error = content__clone(old, &svg->base);
|
|
if (error != NSERROR_OK) {
|
|
content_destroy(&svg->base);
|
|
return error;
|
|
}
|
|
|
|
/* Simply replay create/convert */
|
|
error = svg_create_svg_data(svg);
|
|
if (error != NSERROR_OK) {
|
|
content_destroy(&svg->base);
|
|
return error;
|
|
}
|
|
|
|
if (old->status == CONTENT_STATUS_READY ||
|
|
old->status == CONTENT_STATUS_DONE) {
|
|
if (svg_convert(&svg->base) == false) {
|
|
content_destroy(&svg->base);
|
|
return NSERROR_CLONE_FAILED;
|
|
}
|
|
}
|
|
|
|
*newc = (struct content *) svg;
|
|
|
|
return NSERROR_OK;
|
|
}
|
|
|
|
static content_type svg_content_type(void)
|
|
{
|
|
return CONTENT_IMAGE;
|
|
}
|
|
|
|
static const content_handler svg_content_handler = {
|
|
.create = svg_create,
|
|
.data_complete = svg_convert,
|
|
.reformat = svg_reformat,
|
|
.destroy = svg_destroy,
|
|
.redraw = svg_redraw,
|
|
.clone = svg_clone,
|
|
.type = svg_content_type,
|
|
.no_share = true
|
|
};
|
|
|
|
static const char *svg_types[] = {
|
|
"image/svg",
|
|
"image/svg+xml"
|
|
};
|
|
|
|
|
|
CONTENT_FACTORY_REGISTER_TYPES(svg, svg_types, svg_content_handler);
|