afbb13e1a4
This adds compiler symbol deprecation declarations for old Cogl APIs so that users can easily see via compiler warning when they are using these symbols, and also see a hint for what the apis should be replaced with. So that users of Cogl can manage when to show these warnings this introduces a scheme borrowed from glib whereby you can declare what version of the Cogl api you are using: COGL_VERSION_MIN_REQUIRED can be defined to indicate the oldest Cogl api that the application wants to use. Cogl will only warn about deprecations for symbols that were deprecated earlier than this required version. If this is left undefined then by default Cogl will warn about all deprecations. COGL_VERSION_MAX_ALLOWED can be defined to indicate the newest api that the application uses. If the application uses symbols newer than this then Cogl will give a warning about that. This patch removes the need to maintain the COGL_DISABLE_DEPRECATED guards around deprecated symbols. This patch fixes a few uses of deprecated symbols in the examples/ Reviewed-by: Neil Roberts <neil@linux.intel.com>
333 lines
9.1 KiB
C
333 lines
9.1 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) 2012,2013 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, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __COGL_VERSION_H__
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#define __COGL_VERSION_H__
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#include <cogl/cogl-defines.h>
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/**
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* SECTION:cogl-version
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* @short_description: Macros for determining the version of Cogl being used
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*
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* Cogl offers a set of macros for checking the version of the library
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* at compile time.
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*
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* Cogl adds version information to both API deprecations and additions;
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* by definining the macros %COGL_VERSION_MIN_REQUIRED and
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* %COGL_VERSION_MAX_ALLOWED, you can specify the range of Cogl versions
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* whose API you want to use. Functions that were deprecated before, or
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* introduced after, this range will trigger compiler warnings. For instance,
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* if we define the following symbols:
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*
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* |[
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* COGL_VERSION_MIN_REQUIRED = COGL_VERSION_1_6
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* COGL_VERSION_MAX_ALLOWED = COGL_VERSION_1_8
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* ]|
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*
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* and we have the following functions annotated in the Cogl headers:
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*
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* |[
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* void cogl_function_A (void) COGL_DEPRECATED_IN_1_4;
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* void cogl_function_B (void) COGL_DEPRECATED_IN_1_6;
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* void cogl_function_C (void) COGL_AVAILABLE_IN_1_8;
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* void cogl_function_D (void) COGL_AVAILABLE_IN_1_10;
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* ]|
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*
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* then any application code using the functions above will get the output:
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*
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* |[
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* cogl_function_A: deprecation warning
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* cogl_function_B: no warning
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* cogl_function_C: no warning
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* cogl_function_D: symbol not available warning
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* ]|
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*
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* It is possible to disable the compiler warnings by defining the macro
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* %COGL_DISABLE_DEPRECATION_WARNINGS before including the cogl.h
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* header.
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*/
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/**
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* COGL_VERSION_MAJOR:
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*
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* The major version of the Cogl library (1, if %COGL_VERSION is 1.2.3)
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_MAJOR COGL_VERSION_MAJOR_INTERNAL
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/**
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* COGL_VERSION_MINOR:
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*
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* The minor version of the Cogl library (2, if %COGL_VERSION is 1.2.3)
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_MINOR COGL_VERSION_MINOR_INTERNAL
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/**
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* COGL_VERSION_MICRO:
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*
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* The micro version of the Cogl library (3, if %COGL_VERSION is 1.2.3)
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_MICRO COGL_VERSION_MICRO_INTERNAL
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/**
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* COGL_VERSION_STRING:
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*
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* The full version of the Cogl library, in string form (suited for
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* string concatenation)
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_STRING COGL_VERSION_STRING_INTERNAL
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/* Macros to handle compacting a 3-component version number into an
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* int for quick comparison. This assumes all of the components are <=
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* 1023 and that an int is >= 31 bits */
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#define COGL_VERSION_COMPONENT_BITS 10
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#define COGL_VERSION_MAX_COMPONENT_VALUE \
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((1 << COGL_VERSION_COMPONENT_BITS) - 1)
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/**
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* COGL_VERSION:
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*
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* The Cogl version encoded into a single integer using the
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* COGL_VERSION_ENCODE() macro. This can be used for quick comparisons
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* with particular versions.
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION \
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COGL_VERSION_ENCODE (COGL_VERSION_MAJOR, \
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COGL_VERSION_MINOR, \
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COGL_VERSION_MICRO)
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/**
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* COGL_VERSION_ENCODE:
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* @major: The major part of a version number
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* @minor: The minor part of a version number
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* @micro: The micro part of a version number
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*
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* Encodes a 3 part version number into a single integer. This can be
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* used to compare the Cogl version. For example if there is a known
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* bug in Cogl versions between 1.3.2 and 1.3.4 you could use the
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* following code to provide a workaround:
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*
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* |[
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* #if COGL_VERSION >= COGL_VERSION_ENCODE (1, 3, 2) && \
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* COGL_VERSION <= COGL_VERSION_ENCODE (1, 3, 4)
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* /<!-- -->* Do the workaround *<!-- -->/
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* #endif
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* ]|
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_ENCODE(major, minor, micro) \
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(((major) << (COGL_VERSION_COMPONENT_BITS * 2)) | \
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((minor) << COGL_VERSION_COMPONENT_BITS) \
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| (micro))
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/**
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* COGL_VERSION_GET_MAJOR:
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* @version: An encoded version number
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*
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* Extracts the major part of an encoded version number.
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_GET_MAJOR(version) \
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(((version) >> (COGL_VERSION_COMPONENT_BITS * 2)) \
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& COGL_VERSION_MAX_COMPONENT_VALUE)
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/**
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* COGL_VERSION_GET_MINOR:
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* @version: An encoded version number
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*
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* Extracts the minor part of an encoded version number.
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_GET_MINOR(version) \
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(((version) >> COGL_VERSION_COMPONENT_BITS) & \
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COGL_VERSION_MAX_COMPONENT_VALUE)
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/**
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* COGL_VERSION_GET_MICRO:
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* @version: An encoded version number
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*
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* Extracts the micro part of an encoded version number.
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*
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* Since: 1.12.0
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*/
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#define COGL_VERSION_GET_MICRO(version) \
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((version) & COGL_VERSION_MAX_COMPONENT_VALUE)
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/**
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* COGL_VERSION_CHECK:
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* @major: The major part of a version number
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* @minor: The minor part of a version number
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* @micro: The micro part of a version number
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*
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* A convenient macro to check whether the Cogl version being compiled
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* against is at least the given version number. For example if the
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* function cogl_pipeline_frobnicate was added in version 2.0.1 and
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* you want to conditionally use that function when it is available,
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* you could write the following:
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*
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* |[
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* #if COGL_VERSION_CHECK (2, 0, 1)
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* cogl_pipeline_frobnicate (pipeline);
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* #else
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* /<!-- -->* Frobnication is not supported. Use a red color instead *<!-- -->/
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* cogl_pipeline_set_color_4f (pipeline, 1.0f, 0.0f, 0.0f, 1.0f);
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* #endif
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* ]|
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*
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* Return value: %TRUE if the Cogl version being compiled against is
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* greater than or equal to the given three part version number.
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* Since: 1.12.0
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*/
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#define COGL_VERSION_CHECK(major, minor, micro) \
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(COGL_VERSION >= COGL_VERSION_ENCODE (major, minor, micro))
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/**
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* COGL_VERSION_1_0:
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*
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* A macro that evaluates to the 1.0 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_0 (COGL_VERSION_ENCODE (1, 0, 0))
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/**
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* COGL_VERSION_1_2:
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*
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* A macro that evaluates to the 1.2 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_2 (COGL_VERSION_ENCODE (1, 2, 0))
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/**
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* COGL_VERSION_1_4:
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*
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* A macro that evaluates to the 1.4 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_4 (COGL_VERSION_ENCODE (1, 4, 0))
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/**
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* COGL_VERSION_1_6:
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*
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* A macro that evaluates to the 1.6 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_6 (COGL_VERSION_ENCODE (1, 6, 0))
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/**
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* COGL_VERSION_1_8:
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*
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* A macro that evaluates to the 1.8 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_8 (COGL_VERSION_ENCODE (1, 8, 0))
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/**
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* COGL_VERSION_1_10:
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*
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* A macro that evaluates to the 1.10 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_10 (COGL_VERSION_ENCODE (1, 10, 0))
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/**
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* COGL_VERSION_1_12:
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*
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* A macro that evaluates to the 1.12 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_12 (COGL_VERSION_ENCODE (1, 12, 0))
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/**
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* COGL_VERSION_1_14:
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*
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* A macro that evaluates to the 1.14 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_14 (COGL_VERSION_ENCODE (1, 14, 0))
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/**
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* COGL_VERSION_1_16:
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*
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* A macro that evaluates to the 1.16 version of Cogl, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 1.16
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*/
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#define COGL_VERSION_1_16 (COGL_VERSION_ENCODE (1, 16, 0))
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/* evaluates to the current stable version; for development cycles,
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* this means the next stable target
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*/
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#if (COGL_VERSION_MINOR_INTERNAL % 2)
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#define COGL_VERSION_CURRENT_STABLE \
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(COGL_VERSION_ENCODE (COGL_VERSION_MAJOR_INTERNAL, \
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COGL_VERSION_MINOR_INTERNAL + 1, 0))
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#else
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#define COGL_VERSION_CURRENT_STABLE \
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(COGL_VERSION_ENCODE (COGL_VERSION_MAJOR_INTERNAL, \
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COGL_VERSION_MINOR_INTERNAL, 0))
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#endif
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/* evaluates to the previous stable version */
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#if (COGL_VERSION_MINOR_INTERNAL % 2)
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#define COGL_VERSION_PREVIOUS_STABLE \
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(COGL_VERSION_ENCODE (COGL_VERSION_MAJOR_INTERNAL, \
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COGL_VERSION_MINOR_INTERNAL - 1, 0))
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#else
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#define COGL_VERSION_PREVIOUS_STABLE \
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(COGL_VERSION_ENCODE (COGL_VERSION_MAJOR_INTERNAL, \
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COGL_VERSION_MINOR_INTERNAL - 2, 0))
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#endif
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#endif /* __COGL_VERSION_H__ */
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