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Diffstat (limited to 'content/handlers/image/nssprite.c')
-rw-r--r-- | content/handlers/image/nssprite.c | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/content/handlers/image/nssprite.c b/content/handlers/image/nssprite.c new file mode 100644 index 000000000..fd651e0b0 --- /dev/null +++ b/content/handlers/image/nssprite.c @@ -0,0 +1,259 @@ + /* + * Copyright 2008 James Shaw <js102@zepler.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-riscos-sprite (librosprite implementation). + * + */ + +#include <stdbool.h> +#include <stdlib.h> +#include <librosprite.h> + +#include "utils/utils.h" +#include "utils/log.h" +#include "utils/messages.h" +#include "content/content_protected.h" +#include "desktop/gui_internal.h" +#include "desktop/plotters.h" + +#include "bitmap.h" +#include "nssprite.h" + +typedef struct nssprite_content { + struct content base; + struct bitmap *bitmap; /**< Created NetSurf bitmap */ + + struct rosprite_area* sprite_area; +} nssprite_content; + + +#define ERRCHK(x) do { \ + rosprite_error err = x; \ + if (err == ROSPRITE_EOF) { \ + LOG("Got ROSPRITE_EOF when loading sprite file"); \ + return false; \ + } else if (err == ROSPRITE_BADMODE) { \ + LOG("Got ROSPRITE_BADMODE when loading sprite file"); \ + return false; \ + } else if (err == ROSPRITE_OK) { \ + } else { \ + return false; \ + } \ +} while(0) + + + + +static nserror nssprite_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) +{ + nssprite_content *sprite; + nserror error; + + sprite = calloc(1, sizeof(nssprite_content)); + if (sprite == NULL) + return NSERROR_NOMEM; + + error = content__init(&sprite->base, handler, imime_type, params, + llcache, fallback_charset, quirks); + if (error != NSERROR_OK) { + free(sprite); + return error; + } + + *c = (struct content *) sprite; + + return NSERROR_OK; +} + +/** + * Convert a CONTENT_SPRITE for display. + * + * No conversion is necessary. We merely read the sprite dimensions. + */ + +static bool nssprite_convert(struct content *c) +{ + nssprite_content *nssprite = (nssprite_content *) c; + union content_msg_data msg_data; + + struct rosprite_mem_context* ctx; + + const char *data; + unsigned long size; + char *title; + + data = content__get_source_data(c, &size); + + ERRCHK(rosprite_create_mem_context((uint8_t *) data, size, &ctx)); + + struct rosprite_area* sprite_area; + ERRCHK(rosprite_load(rosprite_mem_reader, ctx, &sprite_area)); + rosprite_destroy_mem_context(ctx); + nssprite->sprite_area = sprite_area; + + assert(sprite_area->sprite_count > 0); + + struct rosprite* sprite = sprite_area->sprites[0]; + + nssprite->bitmap = guit->bitmap->create(sprite->width, sprite->height, BITMAP_NEW); + if (!nssprite->bitmap) { + msg_data.error = messages_get("NoMemory"); + content_broadcast(c, CONTENT_MSG_ERROR, msg_data); + return false; + } + uint32_t* imagebuf = (uint32_t *)guit->bitmap->get_buffer(nssprite->bitmap); + if (!imagebuf) { + msg_data.error = messages_get("NoMemory"); + content_broadcast(c, CONTENT_MSG_ERROR, msg_data); + return false; + } + unsigned char *spritebuf = (unsigned char *)sprite->image; + + /* reverse byte order of each word */ + for (uint32_t y = 0; y < sprite->height; y++) { + for (uint32_t x = 0; x < sprite->width; x++) { + int offset = 4 * (y * sprite->width + x); + + *imagebuf = (spritebuf[offset] << 24) | + (spritebuf[offset + 1] << 16) | + (spritebuf[offset + 2] << 8) | + (spritebuf[offset + 3]); + + imagebuf++; + } + } + + c->width = sprite->width; + c->height = sprite->height; + + /* set title text */ + title = messages_get_buff("SpriteTitle", + nsurl_access_leaf(llcache_handle_get_url(c->llcache)), + c->width, c->height); + if (title != NULL) { + content__set_title(c, title); + free(title); + } + + guit->bitmap->modified(nssprite->bitmap); + + content_set_ready(c); + content_set_done(c); + content_set_status(c, ""); /* Done: update status bar */ + + return true; +} + + +/** + * Destroy a CONTENT_SPRITE and free all resources it owns. + */ + +static void nssprite_destroy(struct content *c) +{ + nssprite_content *nssprite = (nssprite_content *) c; + + if (nssprite->sprite_area != NULL) + rosprite_destroy_sprite_area(nssprite->sprite_area); + if (nssprite->bitmap != NULL) + guit->bitmap->destroy(nssprite->bitmap); +} + + +/** + * Redraw a CONTENT_SPRITE. + */ + +static bool nssprite_redraw(struct content *c, struct content_redraw_data *data, + const struct rect *clip, const struct redraw_context *ctx) +{ + nssprite_content *nssprite = (nssprite_content *) c; + bitmap_flags_t flags = BITMAPF_NONE; + + if (data->repeat_x) + flags |= BITMAPF_REPEAT_X; + if (data->repeat_y) + flags |= BITMAPF_REPEAT_Y; + + return ctx->plot->bitmap(data->x, data->y, data->width, data->height, + nssprite->bitmap, data->background_colour, flags); +} + + +static nserror nssprite_clone(const struct content *old, struct content **newc) +{ + nssprite_content *sprite; + nserror error; + + sprite = calloc(1, sizeof(nssprite_content)); + if (sprite == NULL) + return NSERROR_NOMEM; + + error = content__clone(old, &sprite->base); + if (error != NSERROR_OK) { + content_destroy(&sprite->base); + return error; + } + + /* Simply replay convert */ + if (old->status == CONTENT_STATUS_READY || + old->status == CONTENT_STATUS_DONE) { + if (nssprite_convert(&sprite->base) == false) { + content_destroy(&sprite->base); + return NSERROR_CLONE_FAILED; + } + } + + *newc = (struct content *) sprite; + + return NSERROR_OK; +} + +static void *nssprite_get_internal(const struct content *c, void *context) +{ + nssprite_content *nssprite = (nssprite_content *) c; + + return nssprite->bitmap; +} + +static content_type nssprite_content_type(void) +{ + return CONTENT_IMAGE; +} + + +static const content_handler nssprite_content_handler = { + .create = nssprite_create, + .data_complete = nssprite_convert, + .destroy = nssprite_destroy, + .redraw = nssprite_redraw, + .clone = nssprite_clone, + .get_internal = nssprite_get_internal, + .type = nssprite_content_type, + .no_share = false, +}; + +static const char *nssprite_types[] = { + "image/x-riscos-sprite" +}; + +CONTENT_FACTORY_REGISTER_TYPES(nssprite, nssprite_types, nssprite_content_handler); |