230 lines
6.8 KiB
C
230 lines
6.8 KiB
C
/*
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* Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include <swis.h>
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#include <stdlib.h>
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#include <oslib/colourtrans.h>
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#include <oslib/osspriteop.h>
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#include "utils/nsoption.h"
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#include "utils/log.h"
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#include "riscos/image.h"
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#include "riscos/gui.h"
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#include "riscos/tinct.h"
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static bool image_redraw_tinct(osspriteop_id header, int x, int y,
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int req_width, int req_height, int width, int height,
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colour background_colour, bool repeatx, bool repeaty,
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bool alpha, unsigned int tinct_options);
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static bool image_redraw_os(osspriteop_id header, int x, int y,
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int req_width, int req_height, int width, int height);
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/**
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* Plot an image at the given coordinates using the method specified
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*
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* \param area The sprite area containing the sprite
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* \param x Left edge of sprite
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* \param y Top edge of sprite
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* \param req_width The requested width of the sprite
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* \param req_height The requested height of the sprite
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* \param width The actual width of the sprite
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* \param height The actual height of the sprite
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* \param background_colour The background colour to blend to
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* \param repeatx Repeat the image in the x direction
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* \param repeaty Repeat the image in the y direction
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* \param background Use background image settings (otherwise foreground)
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* \param type The plot method to use
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* \return true on success, false otherwise
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*/
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bool image_redraw(osspriteop_area *area, int x, int y, int req_width,
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int req_height, int width, int height,
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colour background_colour,
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bool repeatx, bool repeaty, bool background, image_type type)
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{
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unsigned int tinct_options;
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/* failed decompression/loading can result in no image being present */
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if (!area)
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return false;
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osspriteop_id header = (osspriteop_id)
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((char*) area + area->first);
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req_width *= 2;
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req_height *= 2;
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width *= 2;
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height *= 2;
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tinct_options = background ? nsoption_int(plot_bg_quality) :
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nsoption_int(plot_fg_quality);
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switch (type) {
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case IMAGE_PLOT_TINCT_ALPHA:
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return image_redraw_tinct(header, x, y,
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req_width, req_height,
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width, height,
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background_colour,
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repeatx, repeaty, true,
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tinct_options);
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case IMAGE_PLOT_TINCT_OPAQUE:
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return image_redraw_tinct(header, x, y,
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req_width, req_height,
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width, height,
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background_colour,
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repeatx, repeaty, false,
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tinct_options);
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case IMAGE_PLOT_OS:
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return image_redraw_os(header, x, y, req_width,
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req_height, width, height);
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default:
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break;
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}
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return false;
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}
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/**
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* Plot an image at the given coordinates using tinct
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*
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* \param header The sprite header
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* \param x Left edge of sprite
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* \param y Top edge of sprite
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* \param req_width The requested width of the sprite
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* \param req_height The requested height of the sprite
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* \param width The actual width of the sprite
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* \param height The actual height of the sprite
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* \param background_colour The background colour to blend to
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* \param repeatx Repeat the image in the x direction
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* \param repeaty Repeat the image in the y direction
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* \param alpha Use the alpha channel
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* \param tinct_options The base option set to use
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* \return true on success, false otherwise
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*/
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bool image_redraw_tinct(osspriteop_id header, int x, int y,
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int req_width, int req_height, int width, int height,
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colour background_colour, bool repeatx, bool repeaty,
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bool alpha, unsigned int tinct_options)
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{
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_kernel_oserror *error;
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/* Set up our flagword
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*/
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tinct_options |= background_colour << tinct_BACKGROUND_SHIFT;
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if (print_active)
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tinct_options |= tinct_USE_OS_SPRITE_OP;
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if (repeatx)
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tinct_options |= tinct_FILL_HORIZONTALLY;
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if (repeaty)
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tinct_options |= tinct_FILL_VERTICALLY;
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if (alpha) {
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error = _swix(Tinct_PlotScaledAlpha, _INR(2,7),
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header, x, y - req_height,
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req_width, req_height, tinct_options);
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} else {
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error = _swix(Tinct_PlotScaled, _INR(2,7),
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header, x, y - req_height,
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req_width, req_height, tinct_options);
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}
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if (error) {
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NSLOG(netsurf, INFO, "xtinct_plotscaled%s: 0x%x: %s",
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(alpha ? "alpha" : ""), error->errnum, error->errmess);
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return false;
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}
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return true;
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}
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/**
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* Plot an image at the given coordinates using os_spriteop
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*
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* \param header The sprite header
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* \param x Left edge of sprite
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* \param y Top edge of sprite
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* \param req_width The requested width of the sprite
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* \param req_height The requested height of the sprite
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* \param width The actual width of the sprite
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* \param height The actual height of the sprite
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* \return true on success, false otherwise
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*/
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bool image_redraw_os(osspriteop_id header, int x, int y, int req_width,
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int req_height, int width, int height)
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{
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int size;
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os_factors f;
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osspriteop_trans_tab *table;
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os_error *error;
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error = xcolourtrans_generate_table_for_sprite(
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(osspriteop_area *)0x100, header,
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os_CURRENT_MODE,
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colourtrans_CURRENT_PALETTE,
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0, colourtrans_GIVEN_SPRITE, 0, 0, &size);
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if (error) {
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NSLOG(netsurf, INFO,
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"xcolourtrans_generate_table_for_sprite: 0x%x: %s",
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error->errnum,
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error->errmess);
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return false;
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}
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table = calloc(size, sizeof(char));
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if (!table) {
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NSLOG(netsurf, INFO, "malloc failed");
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ro_warn_user("NoMemory", 0);
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return false;
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}
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error = xcolourtrans_generate_table_for_sprite(
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(osspriteop_area *)0x100, header,
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os_CURRENT_MODE,
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colourtrans_CURRENT_PALETTE,
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table, colourtrans_GIVEN_SPRITE, 0, 0, 0);
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if (error) {
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NSLOG(netsurf, INFO,
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"xcolourtrans_generate_table_for_sprite: 0x%x: %s",
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error->errnum,
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error->errmess);
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free(table);
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return false;
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}
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f.xmul = req_width;
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f.ymul = req_height;
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f.xdiv = width;
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f.ydiv = height;
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error = xosspriteop_put_sprite_scaled(osspriteop_PTR,
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(osspriteop_area *)0x100, header,
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x, (int)(y - req_height),
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8, &f, table);
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if (error) {
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NSLOG(netsurf, INFO,
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"xosspriteop_put_sprite_scaled: 0x%x: %s",
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error->errnum,
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error->errmess);
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free(table);
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return false;
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}
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free(table);
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return true;
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}
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