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6436cd073d
This declares the interface types CoglFramebuffer, CoglBuffer, CoglTexture, CoglMetaTexture and CoglPrimitiveTexture as void when including the public cogl.h header so that users don't have to use lots of C type casts between instance types and interface types. This also removes all of the COGL_XYZ() type cast macros since they do nothing more than compile time type casting but it's less readable if you haven't seen that coding pattern before. Unlike with gobject based apis that use per-type macros for casting and performing runtime type checking we instead prefer to do our runtime type checking internally within the front-end public apis when objects are passed into Cogl. This greatly reduces the verbosity for users of the api and may help reduce the chance of excessive runtime type checking that can sometimes be a problem. (cherry picked from commit 248a76f5eac7e5ae4fb45208577f9a55360812a7) Since we can't break the 1.x api this version of the patch actually defines compatible NOP macros within deprecated/cogl-type-casts.h
162 lines
5.3 KiB
C
162 lines
5.3 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2011 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#if !defined(__COGL_XLIB_H_INSIDE__) && !defined(COGL_COMPILATION)
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#error "Only <cogl/cogl-xlib.h> can be included directly."
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#endif
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#ifndef __COGL_XLIB_RENDERER_H__
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#define __COGL_XLIB_RENDERER_H__
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#include <X11/Xlib.h>
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/* NB: this is a top-level header that can be included directly but we
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* want to be careful not to define __COGL_H_INSIDE__ when this is
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* included internally while building Cogl itself since
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* __COGL_H_INSIDE__ is used in headers to guard public vs private api
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* definitions
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*/
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#ifndef COGL_COMPILATION
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#define __COGL_H_INSIDE__
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#endif
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#include <cogl/cogl-renderer.h>
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COGL_BEGIN_DECLS
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/*
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* cogl_xlib_renderer_handle_event:
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* @renderer: a #CoglRenderer
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* @event: pointer to an XEvent structure
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*
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* This function processes a single event; it can be used to hook into
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* external event retrieval (for example that done by Clutter or
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* GDK).
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*
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* Return value: #CoglFilterReturn. %COGL_FILTER_REMOVE indicates that
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* Cogl has internally handled the event and the caller should do no
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* further processing. %COGL_FILTER_CONTINUE indicates that Cogl is
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* either not interested in the event, or has used the event to update
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* internal state without taking any exclusive action.
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*/
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CoglFilterReturn
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cogl_xlib_renderer_handle_event (CoglRenderer *renderer,
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XEvent *event);
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/*
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* CoglXlibFilterFunc:
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* @event: pointer to an XEvent structure
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* @data: the data that was given when the filter was added
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*
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* A callback function that can be registered with
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* cogl_xlib_renderer_add_filter(). The function should return
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* %COGL_FILTER_REMOVE if it wants to prevent further processing or
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* %COGL_FILTER_CONTINUE otherwise.
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*/
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typedef CoglFilterReturn (* CoglXlibFilterFunc) (XEvent *event,
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void *data);
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/*
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* cogl_xlib_renderer_add_filter:
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* @renderer: a #CoglRenderer
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* @func: the callback function
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* @data: user data passed to @func when called
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*
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* Adds a callback function that will receive all native events. The
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* function can stop further processing of the event by return
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* %COGL_FILTER_REMOVE.
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*/
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void
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cogl_xlib_renderer_add_filter (CoglRenderer *renderer,
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CoglXlibFilterFunc func,
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void *data);
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/*
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* cogl_xlib_renderer_remove_filter:
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* @renderer: a #CoglRenderer
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* @func: the callback function
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* @data: user data given when the callback was installed
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*
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* Removes a callback that was previously added with
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* cogl_xlib_renderer_add_filter().
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*/
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void
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cogl_xlib_renderer_remove_filter (CoglRenderer *renderer,
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CoglXlibFilterFunc func,
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void *data);
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/*
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* cogl_xlib_renderer_get_foreign_display:
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* @renderer: a #CoglRenderer
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*
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* Return value: the foreign Xlib display that will be used by any Xlib based
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* winsys backend. The display needs to be set with
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* cogl_xlib_renderer_set_foreign_display() before this function is called.
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*/
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Display *
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cogl_xlib_renderer_get_foreign_display (CoglRenderer *renderer);
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/*
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* cogl_xlib_renderer_set_foreign_display:
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* @renderer: a #CoglRenderer
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*
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* Sets a foreign Xlib display that Cogl will use for and Xlib based winsys
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* backend.
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*
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* Note that calling this function will automatically call
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* cogl_xlib_renderer_set_event_retrieval_enabled() to disable Cogl's
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* event retrieval. Cogl still needs to see all of the X events so the
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* application should also use cogl_xlib_renderer_handle_event() if it
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* uses this function.
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*/
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void
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cogl_xlib_renderer_set_foreign_display (CoglRenderer *renderer,
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Display *display);
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/**
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* cogl_xlib_renderer_set_event_retrieval_enabled:
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* @renderer: a #CoglRenderer
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* @enable: The new value
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*
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* Sets whether Cogl should automatically retrieve events from the X
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* display. This defaults to %TRUE unless
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* cogl_xlib_renderer_set_foreign_display() is called. It can be set
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* to %FALSE if the application wants to handle its own event
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* retrieval. Note that Cogl still needs to see all of the X events to
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* function properly so the application should call
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* cogl_xlib_renderer_handle_event() for each event if it disables
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* automatic event retrieval.
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*
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* Since: 1.10
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* Stability: unstable
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*/
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void
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cogl_xlib_renderer_set_event_retrieval_enabled (CoglRenderer *renderer,
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CoglBool enable);
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Display *
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cogl_xlib_renderer_get_display (CoglRenderer *renderer);
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COGL_END_DECLS
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#endif /* __COGL_XLIB_RENDERER_H__ */
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