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netsurf/riscos/artworks.c

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/*
* Copyright 2005 Adrian Lees <adrianl@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
* Content for image/x-artworks (RISC OS implementation).
*
* Uses the ArtworksRenderer module
*/
#include "utils/config.h"
#ifdef WITH_ARTWORKS
#include <assert.h>
#include <limits.h>
#include <stdlib.h>
#include "swis.h"
#include "oslib/os.h"
#include "oslib/wimp.h"
#include "utils/config.h"
#include "desktop/plotters.h"
#include "content/content.h"
#include "riscos/artworks.h"
#include "riscos/gui.h"
#include "utils/utils.h"
#include "utils/messages.h"
#include "utils/log.h"
#define AWRender_FileInitAddress 0x46080
#define AWRender_RenderAddress 0x46081
#define AWRender_DocBounds 0x46082
#define AWRender_SendDefs 0x46083
#define AWRender_ClaimVectors 0x46084
#define AWRender_ReleaseVectors 0x46085
#define AWRender_FindFirstFont 0x46086
#define AWRender_FindNextFont 0x46087
#define INITIAL_BLOCK_SIZE 0x1000
struct awinfo_block {
int ditherx;
int dithery;
int clip_x0;
int clip_y0;
int clip_x1;
int clip_y1;
int print_lowx;
int print_lowy;
int print_handle;
int print_x1;
int print_y1;
int bgcolour;
};
/* Assembler routines for interfacing with the ArtworksRenderer module */
os_error *awrender_init(char **doc,
unsigned long *doc_size,
void *routine,
void *workspace);
os_error *awrender_render(const char *doc,
const struct awinfo_block *info,
const os_trfm *trans,
const int *vdu_vars,
void **rsz_block,
size_t *rsz_size,
int wysiwyg_setting,
int output_dest,
size_t doc_size,
void *routine,
void *workspace);
/**
* Convert a CONTENT_ARTWORKS for display.
*
* No conversion is necessary. We merely read the ArtWorks
* bounding box bottom-left.
*/
bool artworks_convert(struct content *c, int width, int height)
{
union content_msg_data msg_data;
void *init_workspace;
void *init_routine;
os_error *error;
int used;
/* check whether AWViewer has been seen and we can therefore
locate the ArtWorks rendering modules */
if (xos_read_var_val_size("Alias$LoadArtWorksModules", 0, os_VARTYPE_STRING,
&used, NULL, NULL) || used >= 0) {
LOG(("Alias$LoadArtWorksModules not defined"));
msg_data.error = messages_get("AWNotSeen");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* load the modules, or do nothing if they're already loaded */
error = xos_cli("LoadArtWorksModules");
if (error) {
LOG(("xos_cli: 0x%x: %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* lookup the addresses of the init and render routines */
error = (os_error*)_swix(AWRender_FileInitAddress, _OUT(0) | _OUT(1),
&init_routine, &init_workspace);
if (error) {
LOG(("AWRender_FileInitAddress: 0x%x: %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
error = (os_error*)_swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
&c->data.artworks.render_routine,
&c->data.artworks.render_workspace);
if (error) {
LOG(("AWRender_RenderAddress: 0x%x: %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* initialise (convert file to new format if required) */
error = awrender_init(&c->source_data, &c->source_size,
init_routine, init_workspace);
if (error) {
LOG(("awrender_init: 0x%x : %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
error = (os_error*)_swix(AWRender_DocBounds, _IN(0) | _OUT(2) | _OUT(3) | _OUT(4) | _OUT(5),
c->source_data,
&c->data.artworks.x0,
&c->data.artworks.y0,
&c->data.artworks.x1,
&c->data.artworks.y1);
if (error) {
LOG(("AWRender_DocBounds: 0x%x: %s",
error->errnum, error->errmess));
msg_data.error = error->errmess;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
LOG(("bounding box: %d,%d,%d,%d",
c->data.artworks.x0, c->data.artworks.y0,
c->data.artworks.x1, c->data.artworks.y1));
/* create the resizable workspace required by the
ArtWorksRenderer rendering routine */
c->data.artworks.size = INITIAL_BLOCK_SIZE;
c->data.artworks.block = malloc(INITIAL_BLOCK_SIZE);
if (!c->data.artworks.block) {
LOG(("failed to create block for ArtworksRenderer"));
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
c->width = (c->data.artworks.x1 - c->data.artworks.x0) / 512;
c->height = (c->data.artworks.y1 - c->data.artworks.y0) / 512;
c->title = malloc(100);
if (c->title)
snprintf(c->title, 100, messages_get("ArtWorksTitle"), c->width,
c->height, c->source_size);
c->status = CONTENT_STATUS_DONE;
/* Done: update status bar */
content_set_status(c, "");
return true;
}
/**
* Destroy a CONTENT_ARTWORKS and free all resources it owns.
*/
void artworks_destroy(struct content *c)
{
free(c->title);
free(c->data.artworks.block);
}
/**
* Redraw a CONTENT_ARTWORKS.
*/
bool artworks_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)
{
const os_VDU_VAR_LIST(4) vars = {
{ os_MODEVAR_XEIG_FACTOR,
os_MODEVAR_YEIG_FACTOR,
os_MODEVAR_LOG2_BPP,
os_VDUVAR_END_LIST }
};
struct awinfo_block info;
os_error *error;
os_trfm matrix;
int vals[24];
if (plot.flush && !plot.flush())
return false;
/* pick up render addresses again in case they've changed
(eg. newer AWRender module loaded since we first loaded this file) */
(void)_swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
&c->data.artworks.render_routine,
&c->data.artworks.render_workspace);
/* Scaled image. Transform units (65536*OS units) */
matrix.entries[0][0] = width * 65536 / c->width;
matrix.entries[0][1] = 0;
matrix.entries[1][0] = 0;
matrix.entries[1][1] = height * 65536 / c->height;
/* Draw units. (x,y) = bottom left */
matrix.entries[2][0] = ro_plot_origin_x * 256 + x * 512 -
c->data.artworks.x0 * width / c->width;
matrix.entries[2][1] = ro_plot_origin_y * 256 - (y + height) * 512 -
c->data.artworks.y0 * height / c->height;
info.ditherx = ro_plot_origin_x;
info.dithery = ro_plot_origin_y;
clip_x0 -= x;
clip_y0 -= y;
clip_x1 -= x;
clip_y1 -= y;
if (scale == 1.0) {
info.clip_x0 = (clip_x0 * 512) + c->data.artworks.x0 - 511;
info.clip_y0 = ((c->height - clip_y1) * 512) + c->data.artworks.y0 - 511;
info.clip_x1 = (clip_x1 * 512) + c->data.artworks.x0 + 511;
info.clip_y1 = ((c->height - clip_y0) * 512) + c->data.artworks.y0 + 511;
}
else {
info.clip_x0 = (clip_x0 * 512 / scale) + c->data.artworks.x0 - 511;
info.clip_y0 = ((c->height - (clip_y1 / scale)) * 512) + c->data.artworks.y0 - 511;
info.clip_x1 = (clip_x1 * 512 / scale) + c->data.artworks.x0 + 511;
info.clip_y1 = ((c->height - (clip_y0 / scale)) * 512) + c->data.artworks.y0 + 511;
}
info.print_lowx = 0;
info.print_lowy = 0;
info.print_handle = 0;
info.bgcolour = 0x20000000 | background_colour;
error = xos_read_vdu_variables((os_vdu_var_list*)&vars, vals);
if (error) {
LOG(("xos_read_vdu_variables: 0x%x: %s",
error->errnum, error->errmess));
return false;
}
error = xwimp_read_palette((os_palette*)&vals[3]);
if (error) {
LOG(("xwimp_read_palette: 0x%x: %s",
error->errnum, error->errmess));
return false;
}
error = awrender_render(c->source_data,
&info,
&matrix,
vals,
&c->data.artworks.block,
&c->data.artworks.size,
110, /* fully anti-aliased */
0,
c->source_size,
c->data.artworks.render_routine,
c->data.artworks.render_workspace);
if (error) {
LOG(("awrender_render: 0x%x: %s",
error->errnum, error->errmess));
return false;
}
return true;
}
#endif
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