netsurf/riscos/sprite.c

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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
*/
/** \file
* Content for image/x-riscos-sprite (RISC OS implementation).
*
* No conversion is necessary: we can render RISC OS sprites directly under
* RISC OS.
*
* Unfortunately we have to make a copy of the bitmap data, because sprite areas
* need a length word at the start.
*/
#include <string.h>
#include <stdlib.h>
#include "oslib/osspriteop.h"
#include "netsurf/utils/config.h"
#include "netsurf/content/content.h"
#include "netsurf/riscos/gui.h"
#include "netsurf/riscos/image.h"
#include "netsurf/riscos/sprite.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/messages.h"
#include "netsurf/utils/utils.h"
#ifdef WITH_SPRITE
/**
* Convert a CONTENT_SPRITE for display.
*
* No conversion is necessary. We merely read the sprite dimensions.
*/
bool sprite_convert(struct content *c, int width, int height)
{
os_error *error;
int w, h;
union content_msg_data msg_data;
char *source_data;
source_data = ((char *)c->source_data) - 4;
osspriteop_area *area = (osspriteop_area*)source_data;
c->data.sprite.data = area;
/* check for bad data */
if ((int)c->source_size + 4 != area->used) {
msg_data.error = messages_get("BadSprite");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
error = xosspriteop_read_sprite_info(osspriteop_PTR,
(osspriteop_area *)0x100,
(osspriteop_id) ((char *) area + area->first),
&w, &h, NULL, NULL);
if (error) {
LOG(("xosspriteop_read_sprite_info: 0x%x: %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
c->width = w;
c->height = h;
c->title = malloc(100);
if (c->title)
snprintf(c->title, 100, messages_get("SpriteTitle"), c->width,
c->height, c->source_size);
c->status = CONTENT_STATUS_DONE;
return true;
}
/**
* Destroy a CONTENT_SPRITE and free all resources it owns.
*/
void sprite_destroy(struct content *c)
{
/* do not free c->data.sprite.data at it is simply a pointer to
* 4 bytes beforec->source_data. */
free(c->title);
}
/**
* Redraw a CONTENT_SPRITE.
*/
bool sprite_redraw(struct content *c, int x, int y,
int width, int height,
int clip_x0, int clip_y0, int clip_x1, int clip_y1,
float scale, colour background_colour)
{
return image_redraw(c->data.sprite.data,
ro_plot_origin_x + x * 2,
ro_plot_origin_y - y * 2,
width, height,
c->width,
c->height,
background_colour,
false, false, false,
IMAGE_PLOT_OS);
}
#endif