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4543ed6ac3
Previously the WGL winsys was expecting the application to send all windows messages to Cogl via the cogl_win32_renderer_handle_event function. When using a GLib main loop we can make this work transparently to the application with a GSource for the magic G_WIN32_MSG_HANDLE file descriptor. That causes the GMainLoop to wake up whenever a message is available. This patch makes the WGL winsys add that magic value as a source fd. This will only have any meaning if the application is using glib, but it shouldn't matter because the cogl_poll_renderer_get_info function is documented to only work on Unix-based winsys's anyway. This patch is an API break because by default Cogl will now start stealing all of the Windows messages. Something like Clutter that wants to handle its own event retrieval would now need to call cogl_win32_renderer_set_event_retrieval_enabled to stop Cogl from stealing the events. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 99a7f84d7149f24f3e86c5d3562f9f2632ff6df8)
119 lines
3.9 KiB
C
119 lines
3.9 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_H_INSIDE__) && !defined(COGL_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_WIN32_RENDERER_H__
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#define __COGL_WIN32_RENDERER_H__
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#include <cogl/cogl-types.h>
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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_win32_renderer_handle_event:
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* @renderer: a #CoglRenderer
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* @message: A pointer to a win32 MSG struct
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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_win32_renderer_handle_event (CoglRenderer *renderer,
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MSG *message);
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/**
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* CoglWin32FilterFunc:
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* @message: A pointer to a win32 MSG struct
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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_win32_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 (* CoglWin32FilterFunc) (MSG *message,
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void *data);
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/**
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* cogl_win32_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_win32_renderer_add_filter (CoglRenderer *renderer,
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CoglWin32FilterFunc func,
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void *data);
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/**
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* cogl_win32_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_win32_renderer_add_filter().
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*/
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void
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cogl_win32_renderer_remove_filter (CoglRenderer *renderer,
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CoglWin32FilterFunc func,
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void *data);
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/**
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* cogl_win32_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 messages from
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* Windows. It defaults to %TRUE. It can be set to %FALSE if the
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* application wants to handle its own message retrieval. Note that
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* Cogl still needs to see all of the messages to function properly so
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* the application should call cogl_win32_renderer_handle_event() for
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* each message if it disables automatic event retrieval.
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*
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* Since: 1.16
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* Stability: unstable
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*/
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void
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cogl_win32_renderer_set_event_retrieval_enabled (CoglRenderer *renderer,
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CoglBool enable);
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COGL_END_DECLS
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#endif /* __COGL_WIN32_RENDERER_H__ */
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