/* * Copyright 2003 John M Bell * * 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 . */ /** \file * Content for image/x-drawfile (RISC OS implementation). * * The DrawFile module is used to plot the DrawFile. */ #include "utils/config.h" #ifdef WITH_DRAW #include #include #include "oslib/drawfile.h" #include "utils/config.h" #include "utils/log.h" #include "utils/messages.h" #include "utils/utils.h" #include "netsurf/plotters.h" #include "netsurf/content.h" #include "content/content_protected.h" #include "content/llcache.h" #include "riscos/content-handlers/draw.h" #include "riscos/gui.h" typedef struct draw_content { struct content base; int x0, y0; } draw_content; static nserror draw_create(const content_handler *handler, lwc_string *imime_type, const struct http_parameter *params, llcache_handle *llcache, const char *fallback_charset, bool quirks, struct content **c); static bool draw_convert(struct content *c); static void draw_destroy(struct content *c); static bool draw_redraw(struct content *c, struct content_redraw_data *data, const struct rect *clip, const struct redraw_context *ctx); static nserror draw_clone(const struct content *old, struct content **newc); static content_type draw_content_type(void); static const content_handler draw_content_handler = { .create = draw_create, .data_complete = draw_convert, .destroy = draw_destroy, .redraw = draw_redraw, .clone = draw_clone, .type = draw_content_type, .no_share = false, }; static const char *draw_types[] = { "application/drawfile", "application/x-drawfile", "image/drawfile", "image/x-drawfile" }; CONTENT_FACTORY_REGISTER_TYPES(draw, draw_types, draw_content_handler) nserror draw_create(const content_handler *handler, lwc_string *imime_type, const struct http_parameter *params, llcache_handle *llcache, const char *fallback_charset, bool quirks, struct content **c) { draw_content *draw; nserror error; draw = calloc(1, sizeof(draw_content)); if (draw == NULL) return NSERROR_NOMEM; error = content__init(&draw->base, handler, imime_type, params, llcache, fallback_charset, quirks); if (error != NSERROR_OK) { free(draw); return error; } *c = (struct content *) draw; return NSERROR_OK; } /** * Convert a CONTENT_DRAW for display. * * No conversion is necessary. We merely read the DrawFile dimensions and * bounding box bottom-left. */ bool draw_convert(struct content *c) { draw_content *draw = (draw_content *) c; union content_msg_data msg_data; const uint8_t *source_data; size_t source_size; const void *data; os_box bbox; os_error *error; char *title; source_data = content__get_source_data(c, &source_size); data = source_data; /* BBox contents in Draw units (256*OS unit) */ error = xdrawfile_bbox(0, (drawfile_diagram *) data, (int) source_size, 0, &bbox); if (error) { NSLOG(netsurf, INFO, "xdrawfile_bbox: 0x%x: %s", error->errnum, error->errmess); msg_data.error = error->errmess; content_broadcast(c, CONTENT_MSG_ERROR, &msg_data); return false; } if (bbox.x1 > bbox.x0 && bbox.y1 > bbox.y0) { /* c->width & c->height stored as (OS units/2) => divide by 512 to convert from draw units */ c->width = ((bbox.x1 - bbox.x0) / 512); c->height = ((bbox.y1 - bbox.y0) / 512); } else /* invalid/undefined bounding box */ c->height = c->width = 0; draw->x0 = bbox.x0; draw->y0 = bbox.y0; title = messages_get_buff("DrawTitle", nsurl_access_leaf(llcache_handle_get_url(c->llcache)), c->width, c->height); if (title != NULL) { content__set_title(c, title); free(title); } content_set_ready(c); content_set_done(c); /* Done: update status bar */ content_set_status(c, ""); return true; } /** * Destroy a CONTENT_DRAW and free all resources it owns. */ void draw_destroy(struct content *c) { } /** * Redraw a CONTENT_DRAW. */ bool draw_redraw(struct content *c, struct content_redraw_data *data, const struct rect *clip, const struct redraw_context *ctx) { draw_content *draw = (draw_content *) c; os_trfm matrix; const uint8_t *source_data; size_t source_size; const void *src_data; os_error *error; if (ctx->plot->flush && (ctx->plot->flush(ctx) != NSERROR_OK)) return false; if (!c->width || !c->height) return false; source_data = content__get_source_data(c, &source_size); src_data = source_data; /* Scaled image. Transform units (65536*OS units) */ matrix.entries[0][0] = data->width * 65536 / c->width; matrix.entries[0][1] = 0; matrix.entries[1][0] = 0; matrix.entries[1][1] = data->height * 65536 / c->height; /* Draw units. (x,y) = bottom left */ matrix.entries[2][0] = ro_plot_origin_x * 256 + data->x * 512 - draw->x0 * data->width / c->width; matrix.entries[2][1] = ro_plot_origin_y * 256 - (data->y + data->height) * 512 - draw->y0 * data->height / c->height; error = xdrawfile_render(0, (drawfile_diagram *) src_data, (int) source_size, &matrix, 0, 0); if (error) { NSLOG(netsurf, INFO, "xdrawfile_render: 0x%x: %s", error->errnum, error->errmess); return false; } return true; } /** * Clone a CONTENT_DRAW */ nserror draw_clone(const struct content *old, struct content **newc) { draw_content *draw; nserror error; draw = calloc(1, sizeof(draw_content)); if (draw == NULL) return NSERROR_NOMEM; error = content__clone(old, &draw->base); if (error != NSERROR_OK) { content_destroy(&draw->base); return error; } /* Simply rerun convert */ if (old->status == CONTENT_STATUS_READY || old->status == CONTENT_STATUS_DONE) { if (draw_convert(&draw->base) == false) { content_destroy(&draw->base); return NSERROR_CLONE_FAILED; } } *newc = (struct content *) draw; return NSERROR_OK; } content_type draw_content_type(void) { return CONTENT_IMAGE; } #endif