move image content handlers to accomodate core build changes

1 files changed, 300 insertions, 0 deletions

diff --git a/content/handlers/image/ico.c b/content/handlers/image/ico.c
new file mode 100644
index 000000000..d364fdff5
--- /dev/null
+++ b/content/handlers/image/ico.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2006 Richard Wilson <info@tinct.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/ico (implementation)
+ */
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <libnsbmp.h>
+
+#include "utils/utils.h"
+#include "utils/log.h"
+#include "utils/messages.h"
+#include "content/content_protected.h"
+#include "desktop/gui_internal.h"
+
+#include "image.h"
+#include "bitmap.h"
+#include "ico.h"
+
+typedef struct nsico_content {
+	struct content base;
+
+	struct ico_collection *ico;	/** ICO collection data */
+
+} nsico_content;
+
+/**
+ * Callback for libnsbmp; forwards the call to bitmap_create()
+ *
+ * \param  width   width of image in pixels
+ * \param  height  width of image in pixels
+ * \param  bmp_state A flag word indicating the initial state
+ * \return an opaque struct bitmap, or NULL on memory exhaustion
+ */
+static void *nsico_bitmap_create(int width, int height, unsigned int bmp_state)
+{
+	unsigned int bitmap_state = BITMAP_NEW;
+
+	/* set bitmap state based on bmp state */
+	bitmap_state |= (bmp_state & BMP_OPAQUE) ? BITMAP_OPAQUE : 0;
+	bitmap_state |= (bmp_state & BMP_CLEAR_MEMORY) ?
+			BITMAP_CLEAR_MEMORY : 0;
+
+	/* return the created bitmap */
+	return guit->bitmap->create(width, height, bitmap_state);
+}
+
+static nserror nsico_create_ico_data(nsico_content *c)
+{
+	union content_msg_data msg_data;
+	bmp_bitmap_callback_vt bmp_bitmap_callbacks = {
+		.bitmap_create = nsico_bitmap_create,
+		.bitmap_destroy = guit->bitmap->destroy,
+		.bitmap_get_buffer = guit->bitmap->get_buffer,
+		.bitmap_get_bpp = guit->bitmap->get_bpp
+	};
+
+	c->ico = calloc(sizeof(ico_collection), 1);
+	if (c->ico == NULL) {
+		msg_data.error = messages_get("NoMemory");
+		content_broadcast(&c->base, CONTENT_MSG_ERROR, msg_data);
+		return NSERROR_NOMEM;
+	}
+	ico_collection_create(c->ico, &bmp_bitmap_callbacks);
+	return NSERROR_OK;
+}
+
+
+static nserror nsico_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)
+{
+	nsico_content *result;
+	nserror error;
+
+	result = calloc(1, sizeof(nsico_content));
+	if (result == NULL)
+		return NSERROR_NOMEM;
+
+	error = content__init(&result->base, handler, imime_type, params,
+			llcache, fallback_charset, quirks);
+	if (error != NSERROR_OK) {
+		free(result);
+		return error;
+	}
+
+	error = nsico_create_ico_data(result);
+	if (error != NSERROR_OK) {
+		free(result);
+		return error;
+	}
+
+	*c = (struct content *) result;
+
+	return NSERROR_OK;
+}
+
+
+
+static bool nsico_convert(struct content *c)
+{
+	nsico_content *ico = (nsico_content *) c;
+	struct bmp_image *bmp;
+	bmp_result res;
+	union content_msg_data msg_data;
+	const char *data;
+	unsigned long size;
+	char *title;
+
+	/* set the ico data */
+	data = content__get_source_data(c, &size);
+
+	/* analyse the ico */
+	res = ico_analyse(ico->ico, size, (unsigned char *) data);
+
+	switch (res) {
+	case BMP_OK:
+		break;
+	case BMP_INSUFFICIENT_MEMORY:
+		msg_data.error = messages_get("NoMemory");
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	case BMP_INSUFFICIENT_DATA:
+	case BMP_DATA_ERROR:
+		msg_data.error = messages_get("BadICO");
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	/* Store our content width, height and calculate size */
+	c->width = ico->ico->width;
+	c->height = ico->ico->height;
+	c->size += (ico->ico->width * ico->ico->height * 4) + 16 + 44;
+
+	/* set title text */
+	title = messages_get_buff("ICOTitle",
+			nsurl_access_leaf(llcache_handle_get_url(c->llcache)),
+			c->width, c->height);
+	if (title != NULL) {
+		content__set_title(c, title);
+		free(title);
+	}
+
+	/* select largest icon to ensure one can be selected */
+	bmp = ico_find(ico->ico, 255, 255);
+	if (bmp == NULL) {
+		/* return error */
+		LOG("Failed to select icon");
+		return false;
+	}
+
+	content_set_ready(c);
+	content_set_done(c);
+
+	/* Done: update status bar */
+	content_set_status(c, "");
+	return true;
+}
+
+
+static bool nsico_redraw(struct content *c, struct content_redraw_data *data,
+		const struct rect *clip, const struct redraw_context *ctx)
+{
+	nsico_content *ico = (nsico_content *)c;
+	struct bmp_image *bmp;
+
+	/* select most appropriate sized icon for size */
+	bmp = ico_find(ico->ico, data->width, data->height);
+	if (bmp == NULL) {
+		/* return error */
+		LOG("Failed to select icon");
+		return false;
+	}
+
+	/* ensure its decided */
+	if (bmp->decoded == false) {
+		if (bmp_decode(bmp) != BMP_OK) {
+			return false;
+		} else {
+			LOG("Decoding bitmap");
+			guit->bitmap->modified(bmp->bitmap);
+		}
+
+	}
+
+	return image_bitmap_plot(bmp->bitmap, data, clip, ctx);
+}
+
+
+static void nsico_destroy(struct content *c)
+{
+	nsico_content *ico = (nsico_content *) c;
+
+	ico_finalise(ico->ico);
+	free(ico->ico);
+}
+
+static nserror nsico_clone(const struct content *old, struct content **newc)
+{
+	nsico_content *ico;
+	nserror error;
+
+	ico = calloc(1, sizeof(nsico_content));
+	if (ico == NULL)
+		return NSERROR_NOMEM;
+
+	error = content__clone(old, &ico->base);
+	if (error != NSERROR_OK) {
+		content_destroy(&ico->base);
+		return error;
+	}
+
+	/* Simply replay creation and conversion */
+	error = nsico_create_ico_data(ico);
+	if (error != NSERROR_OK) {
+		content_destroy(&ico->base);
+		return error;
+	}
+
+	if (old->status == CONTENT_STATUS_READY ||
+			old->status == CONTENT_STATUS_DONE) {
+		if (nsico_convert(&ico->base) == false) {
+			content_destroy(&ico->base);
+			return NSERROR_CLONE_FAILED;
+		}
+	}
+
+	*newc = (struct content *) ico;
+
+	return NSERROR_OK;
+}
+
+static void *nsico_get_internal(const struct content *c, void *context)
+{
+	nsico_content *ico = (nsico_content *) c;
+	/* TODO: Pick best size for purpose.
+	 *       Currently assumes it's for a URL bar. */
+	struct bmp_image *bmp; 
+
+	bmp = ico_find(ico->ico, 16, 16);
+	if (bmp == NULL) {
+		/* return error */
+		LOG("Failed to select icon");
+		return NULL;
+	}
+
+	if (bmp->decoded == false) {
+		if (bmp_decode(bmp) != BMP_OK) {
+			return NULL;
+		} else {
+			guit->bitmap->modified(bmp->bitmap);
+		}
+	}
+
+	return bmp->bitmap;
+}
+
+static content_type nsico_content_type(void)
+{
+	return CONTENT_IMAGE;
+}
+
+static const content_handler nsico_content_handler = {
+	.create = nsico_create,
+	.data_complete = nsico_convert,
+	.destroy = nsico_destroy,
+	.redraw = nsico_redraw,
+	.clone = nsico_clone,
+	.get_internal = nsico_get_internal,
+	.type = nsico_content_type,
+	.no_share = false,
+};
+
+static const char *nsico_types[] = {
+	"application/ico",
+	"application/x-ico",
+	"image/ico",
+	"image/vnd.microsoft.icon",
+	"image/x-icon"
+};
+
+CONTENT_FACTORY_REGISTER_TYPES(nsico, nsico_types, nsico_content_handler);