pidgin/pidgin

Merged in fbellet/pidgin/port-changes-from-branch-2.x.y-to-default (pull request #632)

2020-02-04, Gary Kramlich
bba8505129d5
Merged in fbellet/pidgin/port-changes-from-branch-2.x.y-to-default (pull request #632)

Port changes from branch 2.x.y to default

Approved-by: Eion Robb
Approved-by: John Bailey
Approved-by: Gary Kramlich
/* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#ifndef PURPLE_IMAGE_STORE_H
#define PURPLE_IMAGE_STORE_H
/**
* SECTION:image-store
* @include:image-store.h
* @section_id: libpurple-image-store
* @short_description: a global, temporary storage for images
* @title: Image store
*
* Image store references #PurpleImage's by a simple integer value.
* It's a convenient way to embed images in HTML-like strings.
*
* Integer ID's are tracked for being valid - when a image is destroyed, it's
* also removed from the store. If the application runs for a very long time and
* all possible id numbers from integer range are utilized, it will use
* previously released numbers.
*/
#include "image.h"
/**
* PURPLE_IMAGE_STORE_PROTOCOL:
*
* A global URI prefix for images stored in this subsystem.
*/
#define PURPLE_IMAGE_STORE_PROTOCOL "purple-image:"
/**
* PURPLE_IMAGE_STORE_STOCK_PROTOCOL:
*
* A global URI prefix for stock images, with names defined by libpurple and
* contents defined by the UI.
*/
#define PURPLE_IMAGE_STORE_STOCK_PROTOCOL "purple-stock-image:"
G_BEGIN_DECLS
/**
* purple_image_store_add:
* @image: the image.
*
* Permanently adds an image to the store. If the @image is already in the
* store, it will return its current id.
*
* This function increases @image's reference count, so it won't be destroyed
* until image store subsystem is shut down. Don't decrease @image's reference
* count by yourself - if you don't want the store to hold the reference,
* use #purple_image_store_add_weak.
*
* Returns: the unique identifier for the @image.
*/
guint
purple_image_store_add(PurpleImage *image);
/**
* purple_image_store_add_weak:
* @image: the image.
*
* Adds an image to the store without increasing reference count. It will be
* removed from the store when @image gets destroyed.
*
* If the @image is already in the store, it will return its current id.
*
* Returns: the unique identifier for the @image.
*/
guint
purple_image_store_add_weak(PurpleImage *image);
/**
* purple_image_store_add_temporary:
* @image: the image.
*
* Adds an image to the store to be used in a short period of time.
* If the @image is already in the store, it will just return its current id.
*
* Increases reference count for the @image for a time long enough to display
* the @image by the UI. In current implementation it's five seconds, but may be
* changed in the future, so if you need more sophisticated reference
* management, implement it on your own.
*
* Returns: the unique identifier for the @image.
*/
guint
purple_image_store_add_temporary(PurpleImage *image);
/**
* purple_image_store_get:
* @id: the unique identifier of an image.
*
* Finds the image with a certain identifier within a store.
*
* Returns: (transfer none): the image referenced by @id, or %NULL if it
* doesn't exists.
*/
PurpleImage *
purple_image_store_get(guint id);
/**
* purple_image_store_get_from_uri:
* @uri: the URI of a potential #PurpleImage. Should not be %NULL.
*
* Checks, if the @uri is pointing to any #PurpleImage by referring
* to #PURPLE_IMAGE_STORE_PROTOCOL and returns the image, if it's valid.
*
* The function doesn't throw any warning, if the @uri is for any
* other protocol.
*
* Returns: (transfer none): the image referenced by @uri, or %NULL if it
* doesn't point to any valid image.
*/
PurpleImage *
purple_image_store_get_from_uri(const gchar *uri);
/**
* purple_image_store_get_uri:
* @image: the image.
*
* Generates an URI for the @image, to be retrieved using
* #purple_image_store_get_from_uri.
*
* Returns: (transfer full): the URI for the @image. Should be #g_free'd when
* you done using it.
*/
gchar *
purple_image_store_get_uri(PurpleImage *image);
/**
* _purple_image_store_init: (skip)
*
* Initializes the image store subsystem.
*/
void
_purple_image_store_init(void);
/**
* _purple_image_store_uninit: (skip)
*
* Uninitializes the image store subsystem.
*/
void
_purple_image_store_uninit(void);
G_END_DECLS
#endif /* PURPLE_IMAGE_STORE_H */