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Diffstat (limited to 'riscos/content-handlers/draw.c')
| -rw-r--r-- | riscos/content-handlers/draw.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/riscos/content-handlers/draw.c b/riscos/content-handlers/draw.c new file mode 100644 index 000000000..ccb9353cd --- /dev/null +++ b/riscos/content-handlers/draw.c @@ -0,0 +1,300 @@ +/* + * Copyright 2003 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/>. + */ + +/** \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 <string.h> +#include <stdlib.h> +#include "oslib/drawfile.h" +#include "utils/config.h" +#include "content/content_protected.h" +#include "desktop/plotters.h" +#include "riscos/content-handlers/draw.h" +#include "riscos/gui.h" +#include "utils/log.h" +#include "utils/messages.h" +#include "utils/talloc.h" +#include "utils/utils.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 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, int x, int y, + int width, int height, const struct rect *clip, + float scale, colour background_colour, + bool repeat_x, bool repeat_y); +static nserror draw_clone(const struct content *old, struct content **newc); +static content_type draw_content_type(lwc_string *mime_type); + +static const content_handler draw_content_handler = { + draw_create, + NULL, + draw_convert, + NULL, + draw_destroy, + NULL, + NULL, + NULL, + draw_redraw, + NULL, + NULL, + draw_clone, + NULL, + draw_content_type, + false +}; + +static const char *draw_types[] = { + "application/drawfile", + "application/x-drawfile", + "image/drawfile", + "image/x-drawfile" +}; + +static lwc_string *draw_mime_types[NOF_ELEMENTS(draw_types)]; + +nserror draw_init(void) +{ + uint32_t i; + lwc_error lerror; + nserror error; + + for (i = 0; i < NOF_ELEMENTS(draw_mime_types); i++) { + lerror = lwc_intern_string(draw_types[i], + strlen(draw_types[i]), + &draw_mime_types[i]); + if (lerror != lwc_error_ok) { + error = NSERROR_NOMEM; + goto error; + } + + error = content_factory_register_handler(draw_mime_types[i], + &draw_content_handler); + if (error != NSERROR_OK) + goto error; + } + + return NSERROR_OK; + +error: + draw_fini(); + + return error; +} + +void draw_fini(void) +{ + uint32_t i; + + for (i = 0; i < NOF_ELEMENTS(draw_mime_types); i++) { + if (draw_mime_types[i] != NULL) + lwc_string_unref(draw_mime_types[i]); + } +} + +nserror draw_create(const content_handler *handler, + lwc_string *imime_type, const http_parameter *params, + llcache_handle *llcache, const char *fallback_charset, + bool quirks, struct content **c) +{ + draw_content *draw; + nserror error; + + draw = talloc_zero(0, 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) { + talloc_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 char *source_data; + unsigned long source_size; + const void *data; + os_box bbox; + os_error *error; + char title[100]; + + 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) { + LOG(("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; + snprintf(title, sizeof(title), messages_get("DrawTitle"), c->width, + c->height, source_size); + content__set_title(c, 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, int x, int y, + int width, int height, const struct rect *clip, + float scale, colour background_colour, + bool repeat_x, bool repeat_y) +{ + draw_content *draw = (draw_content *) c; + os_trfm matrix; + const char *source_data; + unsigned long source_size; + const void *data; + os_error *error; + + if (plot.flush && !plot.flush()) + return false; + + if (!c->width || !c->height) + return false; + + source_data = content__get_source_data(c, &source_size); + data = source_data; + + /* 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 - + draw->x0 * width / c->width; + matrix.entries[2][1] = ro_plot_origin_y * 256 - (y + height) * 512 - + draw->y0 * height / c->height; + + error = xdrawfile_render(0, (drawfile_diagram *) data, + (int) source_size, &matrix, 0, 0); + if (error) { + LOG(("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 = talloc_zero(0, 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(lwc_string *mime_type) +{ + return CONTENT_IMAGE; +} + +#endif |