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/*
* Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
*
* 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 "swis.h"
#include "oslib/colourtrans.h"
#include "oslib/osspriteop.h"
#include "riscos/image.h"
#include "riscos/gui.h"
#include "riscos/options.h"
#include "riscos/tinct.h"
#include "utils/log.h"
#include "utils/utils.h"
static bool image_redraw_tinct(osspriteop_id header, int x, int y,
int req_width, int req_height, int width, int height,
colour background_colour, bool repeatx, bool repeaty,
bool alpha, unsigned int tinct_options);
static bool image_redraw_os(osspriteop_id header, int x, int y,
int req_width, int req_height, int width, int height);
/**
* Plot an image at the given coordinates using the method specified
*
* \param area The sprite area containing the sprite
* \param x Left edge of sprite
* \param y Top edge of sprite
* \param req_width The requested width of the sprite
* \param req_height The requested height of the sprite
* \param width The actual width of the sprite
* \param height The actual height of the sprite
* \param background_colour The background colour to blend to
* \param repeatx Repeat the image in the x direction
* \param repeaty Repeat the image in the y direction
* \param background Use background image settings (otherwise foreground)
* \param type The plot method to use
* \return true on success, false otherwise
*/
bool image_redraw(osspriteop_area *area, int x, int y, int req_width,
int req_height, int width, int height,
colour background_colour,
bool repeatx, bool repeaty, bool background, image_type type)
{
unsigned int tinct_options;
/* failed decompression/loading can result in no image being present */
if (!area)
return false;
osspriteop_id header = (osspriteop_id)
((char*) area + area->first);
req_width *= 2;
req_height *= 2;
width *= 2;
height *= 2;
tinct_options = background ? option_bg_plot_style :
option_fg_plot_style;
switch (type) {
case IMAGE_PLOT_TINCT_ALPHA:
return image_redraw_tinct(header, x, y,
req_width, req_height,
width, height,
background_colour,
repeatx, repeaty, true,
tinct_options);
case IMAGE_PLOT_TINCT_OPAQUE:
return image_redraw_tinct(header, x, y,
req_width, req_height,
width, height,
background_colour,
repeatx, repeaty, false,
tinct_options);
case IMAGE_PLOT_OS:
return image_redraw_os(header, x, y, req_width,
req_height, width, height);
default:
break;
}
return false;
}
/**
* Plot an image at the given coordinates using tinct
*
* \param area The sprite area containing the sprite
* \param x Left edge of sprite
* \param y Top edge of sprite
* \param req_width The requested width of the sprite
* \param req_height The requested height of the sprite
* \param width The actual width of the sprite
* \param height The actual height of the sprite
* \param background_colour The background colour to blend to
* \param repeatx Repeat the image in the x direction
* \param repeaty Repeat the image in the y direction
* \param alpha Use the alpha channel
* \param tinct_options The base option set to use
* \return true on success, false otherwise
*/
bool image_redraw_tinct(osspriteop_id header, int x, int y,
int req_width, int req_height, int width, int height,
colour background_colour, bool repeatx, bool repeaty,
bool alpha, unsigned int tinct_options)
{
_kernel_oserror *error;
/* Set up our flagword
*/
tinct_options |= background_colour << tinct_BACKGROUND_SHIFT;
if (print_active)
tinct_options |= tinct_USE_OS_SPRITE_OP;
if (repeatx)
tinct_options |= tinct_FILL_HORIZONTALLY;
if (repeaty)
tinct_options |= tinct_FILL_VERTICALLY;
if (alpha) {
error = _swix(Tinct_PlotScaledAlpha, _INR(2,7),
header, x, y - req_height,
req_width, req_height, tinct_options);
} else {
error = _swix(Tinct_PlotScaled, _INR(2,7),
header, x, y - req_height,
req_width, req_height, tinct_options);
}
if (error) {
LOG(("xtinct_plotscaled%s: 0x%x: %s", (alpha ? "alpha" : ""),
error->errnum, error->errmess));
return false;
}
return true;
}
/**
* Plot an image at the given coordinates using os_spriteop
*
* \param area The sprite area containing the sprite
* \param x Left edge of sprite
* \param y Top edge of sprite
* \param req_width The requested width of the sprite
* \param req_height The requested height of the sprite
* \param width The actual width of the sprite
* \param height The actual height of the sprite
* \return true on success, false otherwise
*/
bool image_redraw_os(osspriteop_id header, int x, int y, int req_width,
int req_height, int width, int height)
{
int size;
os_factors f;
osspriteop_trans_tab *table;
os_error *error;
error = xcolourtrans_generate_table_for_sprite(
(osspriteop_area *)0x100, header,
os_CURRENT_MODE,
colourtrans_CURRENT_PALETTE,
0, colourtrans_GIVEN_SPRITE, 0, 0, &size);
if (error) {
LOG(("xcolourtrans_generate_table_for_sprite: 0x%x: %s",
error->errnum, error->errmess));
return false;
}
table = calloc(size, sizeof(char));
if (!table) {
LOG(("malloc failed"));
warn_user("NoMemory", 0);
return false;
}
error = xcolourtrans_generate_table_for_sprite(
(osspriteop_area *)0x100, header,
os_CURRENT_MODE,
colourtrans_CURRENT_PALETTE,
table, colourtrans_GIVEN_SPRITE, 0, 0, 0);
if (error) {
LOG(("xcolourtrans_generate_table_for_sprite: 0x%x: %s",
error->errnum, error->errmess));
free(table);
return false;
}
f.xmul = req_width;
f.ymul = req_height;
f.xdiv = width;
f.ydiv = height;
error = xosspriteop_put_sprite_scaled(osspriteop_PTR,
(osspriteop_area *)0x100, header,
x, (int)(y - req_height),
8, &f, table);
if (error) {
LOG(("xosspriteop_put_sprite_scaled: 0x%x: %s",
error->errnum, error->errmess));
free(table);
return false;
}
free(table);
return true;
}
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