netsurf/content/handlers/image/image.c

160 lines
3.5 KiB
C

/*
* Copyright 2011 John-Mark Bell <jmb@netsurf-browser.org>
*
* 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/>.
*/
#include <stdbool.h>
#include <stdlib.h>
#include "utils/utils.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "content/content.h"
#include "desktop/plotters.h"
#include "desktop/gui_internal.h"
#include "bitmap.h"
#include "bmp.h"
#include "gif.h"
#include "ico.h"
#include "jpeg.h"
#include "nssprite.h"
#include "png.h"
#include "rsvg.h"
#include "svg.h"
#include "image.h"
/**
* Initialise image content handlers
*
* \return NSERROR_OK on success, appropriate error otherwise.
*/
nserror image_init(void)
{
nserror error = NSERROR_OK;
#ifdef WITH_BMP
error = nsbmp_init();
if (error != NSERROR_OK)
return error;
#endif
#ifdef WITH_GIF
error = nsgif_init();
if (error != NSERROR_OK)
return error;
#endif
#ifdef WITH_BMP
error = nsico_init();
if (error != NSERROR_OK)
return error;
#endif
#ifdef WITH_JPEG
error = nsjpeg_init();
if (error != NSERROR_OK)
return error;
#endif
#ifdef WITH_PNG
error = nspng_init();
if (error != NSERROR_OK)
return error;
#endif
#ifdef WITH_NSSPRITE
error = nssprite_init();
if (error != NSERROR_OK)
return error;
#endif
/* Prefer rsvg over libsvgtiny for svgs */
#ifdef WITH_NS_SVG
error = svg_init();
if (error != NSERROR_OK)
return error;
#endif
#ifdef WITH_RSVG
error = nsrsvg_init();
if (error != NSERROR_OK)
return error;
#endif
return error;
}
bool image_bitmap_plot(struct bitmap *bitmap,
struct content_redraw_data *data,
const struct rect *clip,
const struct redraw_context *ctx)
{
bitmap_flags_t flags = BITMAPF_NONE;
int width;
int height;
unsigned char *pixel;
plot_style_t fill_style;
struct rect area;
width = guit->bitmap->get_width(bitmap);
if (width == 1) {
height = guit->bitmap->get_height(bitmap);
if (height == 1) {
/* optimise 1x1 bitmap plot */
pixel = guit->bitmap->get_buffer(bitmap);
fill_style.fill_colour = pixel_to_colour(pixel);
if (guit->bitmap->get_opaque(bitmap) ||
((fill_style.fill_colour & 0xff000000) == 0xff000000)) {
area = *clip;
if (data->repeat_x != true) {
area.x0 = data->x;
area.x1 = data->x + data->width;
}
if (data->repeat_y != true) {
area.y0 = data->y;
area.y1 = data->y + data->height;
}
fill_style.stroke_type = PLOT_OP_TYPE_NONE;
fill_style.fill_type = PLOT_OP_TYPE_SOLID;
return ctx->plot->rectangle(area.x0, area.y0,
area.x1, area.y1,
&fill_style);
} else if ((fill_style.fill_colour & 0xff000000) == 0) {
/* transparent pixel used as spacer, skip it */
return true;
}
}
}
/* do the plot */
if (data->repeat_x)
flags |= BITMAPF_REPEAT_X;
if (data->repeat_y)
flags |= BITMAPF_REPEAT_Y;
return ctx->plot->bitmap(data->x, data->y, data->width, data->height,
bitmap, data->background_colour, flags);
}