mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-30 18:23:08 +03:00
323 lines
8.5 KiB
C
323 lines
8.5 KiB
C
/*
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* Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
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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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/** \file
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* Content for image/x-artworks (RISC OS implementation).
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*
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* Uses the ArtworksRenderer module
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*/
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#include "utils/config.h"
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#ifdef WITH_ARTWORKS
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#include <assert.h>
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#include <limits.h>
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#include <stdlib.h>
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#include "swis.h"
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#include "oslib/os.h"
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#include "oslib/wimp.h"
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#include "utils/config.h"
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#include "desktop/plotters.h"
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#include "content/content.h"
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#include "riscos/artworks.h"
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#include "riscos/gui.h"
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#include "riscos/wimputils.h"
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#include "utils/utils.h"
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#include "utils/messages.h"
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#include "utils/log.h"
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#define AWRender_FileInitAddress 0x46080
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#define AWRender_RenderAddress 0x46081
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#define AWRender_DocBounds 0x46082
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#define AWRender_SendDefs 0x46083
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#define AWRender_ClaimVectors 0x46084
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#define AWRender_ReleaseVectors 0x46085
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#define AWRender_FindFirstFont 0x46086
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#define AWRender_FindNextFont 0x46087
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#define INITIAL_BLOCK_SIZE 0x1000
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struct awinfo_block {
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int ditherx;
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int dithery;
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int clip_x0;
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int clip_y0;
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int clip_x1;
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int clip_y1;
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int print_lowx;
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int print_lowy;
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int print_handle;
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int print_x1;
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int print_y1;
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int bgcolour;
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};
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/* Assembler routines for interfacing with the ArtworksRenderer module */
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os_error *awrender_init(char **doc,
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unsigned long *doc_size,
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void *routine,
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void *workspace);
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os_error *awrender_render(const char *doc,
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const struct awinfo_block *info,
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const os_trfm *trans,
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const int *vdu_vars,
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void **rsz_block,
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size_t *rsz_size,
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int wysiwyg_setting,
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int output_dest,
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size_t doc_size,
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void *routine,
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void *workspace);
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/**
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* Convert a CONTENT_ARTWORKS for display.
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*
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* No conversion is necessary. We merely read the ArtWorks
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* bounding box bottom-left.
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*/
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bool artworks_convert(struct content *c, int width, int height)
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{
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union content_msg_data msg_data;
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void *init_workspace;
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void *init_routine;
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os_error *error;
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int used = -1; /* slightly better with older OSLib versions */
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/* check whether AWViewer has been seen and we can therefore
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locate the ArtWorks rendering modules */
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xos_read_var_val_size("Alias$LoadArtWorksModules", 0, os_VARTYPE_STRING,
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&used, NULL, NULL);
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if (used >= 0) {
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LOG(("Alias$LoadArtWorksModules not defined"));
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msg_data.error = messages_get("AWNotSeen");
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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/* load the modules, or do nothing if they're already loaded */
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error = xos_cli("LoadArtWorksModules");
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if (error) {
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LOG(("xos_cli: 0x%x: %s",
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error->errnum, error->errmess));
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msg_data.error = error->errmess;
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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/* lookup the addresses of the init and render routines */
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error = (os_error*)_swix(AWRender_FileInitAddress, _OUT(0) | _OUT(1),
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&init_routine, &init_workspace);
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if (error) {
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LOG(("AWRender_FileInitAddress: 0x%x: %s",
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error->errnum, error->errmess));
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msg_data.error = error->errmess;
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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error = (os_error*)_swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
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&c->data.artworks.render_routine,
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&c->data.artworks.render_workspace);
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if (error) {
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LOG(("AWRender_RenderAddress: 0x%x: %s",
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error->errnum, error->errmess));
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msg_data.error = error->errmess;
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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/* initialise (convert file to new format if required) */
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error = awrender_init(&c->source_data, &c->source_size,
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init_routine, init_workspace);
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if (error) {
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LOG(("awrender_init: 0x%x : %s",
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error->errnum, error->errmess));
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msg_data.error = error->errmess;
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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error = (os_error*)_swix(AWRender_DocBounds, _IN(0) | _OUT(2) | _OUT(3) | _OUT(4) | _OUT(5),
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c->source_data,
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&c->data.artworks.x0,
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&c->data.artworks.y0,
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&c->data.artworks.x1,
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&c->data.artworks.y1);
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if (error) {
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LOG(("AWRender_DocBounds: 0x%x: %s",
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error->errnum, error->errmess));
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msg_data.error = error->errmess;
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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LOG(("bounding box: %d,%d,%d,%d",
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c->data.artworks.x0, c->data.artworks.y0,
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c->data.artworks.x1, c->data.artworks.y1));
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/* create the resizable workspace required by the
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ArtWorksRenderer rendering routine */
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c->data.artworks.size = INITIAL_BLOCK_SIZE;
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c->data.artworks.block = malloc(INITIAL_BLOCK_SIZE);
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if (!c->data.artworks.block) {
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LOG(("failed to create block for ArtworksRenderer"));
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msg_data.error = messages_get("NoMemory");
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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c->width = (c->data.artworks.x1 - c->data.artworks.x0) / 512;
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c->height = (c->data.artworks.y1 - c->data.artworks.y0) / 512;
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c->title = malloc(100);
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if (c->title)
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snprintf(c->title, 100, messages_get("ArtWorksTitle"), c->width,
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c->height, c->source_size);
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c->status = CONTENT_STATUS_DONE;
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/* Done: update status bar */
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content_set_status(c, "");
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return true;
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}
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/**
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* Destroy a CONTENT_ARTWORKS and free all resources it owns.
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*/
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void artworks_destroy(struct content *c)
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{
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free(c->title);
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free(c->data.artworks.block);
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}
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/**
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* Redraw a CONTENT_ARTWORKS.
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*/
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bool artworks_redraw(struct content *c, int x, int y,
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int width, int height,
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int clip_x0, int clip_y0, int clip_x1, int clip_y1,
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float scale, colour background_colour)
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{
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static const ns_os_vdu_var_list vars = {
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os_MODEVAR_XEIG_FACTOR,
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{
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os_MODEVAR_YEIG_FACTOR,
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os_MODEVAR_LOG2_BPP,
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os_VDUVAR_END_LIST
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}
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};
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struct awinfo_block info;
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os_error *error;
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os_trfm matrix;
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int vals[24];
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if (plot.flush && !plot.flush())
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return false;
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/* pick up render addresses again in case they've changed
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(eg. newer AWRender module loaded since we first loaded this file) */
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(void)_swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
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&c->data.artworks.render_routine,
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&c->data.artworks.render_workspace);
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/* Scaled image. Transform units (65536*OS units) */
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matrix.entries[0][0] = width * 65536 / c->width;
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matrix.entries[0][1] = 0;
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matrix.entries[1][0] = 0;
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matrix.entries[1][1] = height * 65536 / c->height;
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/* Draw units. (x,y) = bottom left */
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matrix.entries[2][0] = ro_plot_origin_x * 256 + x * 512 -
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c->data.artworks.x0 * width / c->width;
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matrix.entries[2][1] = ro_plot_origin_y * 256 - (y + height) * 512 -
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c->data.artworks.y0 * height / c->height;
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info.ditherx = ro_plot_origin_x;
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info.dithery = ro_plot_origin_y;
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clip_x0 -= x;
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clip_y0 -= y;
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clip_x1 -= x;
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clip_y1 -= y;
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if (scale == 1.0) {
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info.clip_x0 = (clip_x0 * 512) + c->data.artworks.x0 - 511;
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info.clip_y0 = ((c->height - clip_y1) * 512) + c->data.artworks.y0 - 511;
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info.clip_x1 = (clip_x1 * 512) + c->data.artworks.x0 + 511;
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info.clip_y1 = ((c->height - clip_y0) * 512) + c->data.artworks.y0 + 511;
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}
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else {
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info.clip_x0 = (clip_x0 * 512 / scale) + c->data.artworks.x0 - 511;
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info.clip_y0 = ((c->height - (clip_y1 / scale)) * 512) + c->data.artworks.y0 - 511;
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info.clip_x1 = (clip_x1 * 512 / scale) + c->data.artworks.x0 + 511;
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info.clip_y1 = ((c->height - (clip_y0 / scale)) * 512) + c->data.artworks.y0 + 511;
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}
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info.print_lowx = 0;
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info.print_lowy = 0;
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info.print_handle = 0;
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info.bgcolour = 0x20000000 | background_colour;
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error = xos_read_vdu_variables(PTR_OS_VDU_VAR_LIST(&vars), vals);
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if (error) {
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LOG(("xos_read_vdu_variables: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xwimp_read_palette((os_palette*)&vals[3]);
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if (error) {
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LOG(("xwimp_read_palette: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = awrender_render(c->source_data,
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&info,
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&matrix,
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vals,
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&c->data.artworks.block,
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&c->data.artworks.size,
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110, /* fully anti-aliased */
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0,
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c->source_size,
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c->data.artworks.render_routine,
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c->data.artworks.render_workspace);
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if (error) {
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LOG(("awrender_render: 0x%x: %s",
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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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#endif
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