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21a24c862e
Portable code should be allowed to check type backend currently being
used, so that it can use platform-specific API (not just Clutter's).
We don't want to go down the GDK route, with public types for
ClutterBackend and ClutterStageWindow implementations, and use the type
system, e.g.:
#ifdef GDK_WINDOWING_X11
if (GDK_IS_WINDOW_X11 (window))
use_x11_api (window);
else
#endif
#ifdef GDK_WINDOWING_WIN32
if (GDK_IS_WINDOW_WIN32 (window))
use_win32_api (window);
else
#endif
g_critical ("Unsupported backend");
This system would make us expose the backend system, and we want to
still reserve us the option to change the backend system to increase its
granularity — e.g. choosing different input event systems regardless of
the windowing system.
This commit adds a simple function that checks the backend type against
a symbolic constant — the same constant string that can be used to
select the backend at run-time through the CLUTTER_BACKEND environment
variable.
203 lines
5.3 KiB
C
203 lines
5.3 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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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 <http://www.gnu.org/licenses/>.
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*
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*
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*/
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/**
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* SECTION:clutter-version
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* @short_description: Versioning utility macros
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*
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* Clutter offers a set of macros for checking the version of the library
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* an application was linked to.
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*/
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#ifndef __CLUTTER_VERSION_H__
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#define __CLUTTER_VERSION_H__
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#include <glib.h>
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G_BEGIN_DECLS
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/**
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* CLUTTER_MAJOR_VERSION:
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*
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* The major version of the Clutter library (1, if %CLUTTER_VERSION is 1.2.3)
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*/
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#define CLUTTER_MAJOR_VERSION (@CLUTTER_MAJOR_VERSION@)
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/**
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* CLUTTER_MINOR_VERSION:
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*
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* The minor version of the Clutter library (2, if %CLUTTER_VERSION is 1.2.3)
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*/
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#define CLUTTER_MINOR_VERSION (@CLUTTER_MINOR_VERSION@)
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/**
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* CLUTTER_MICRO_VERSION:
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*
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* The micro version of the Clutter library (3, if %CLUTTER_VERSION is 1.2.3)
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*/
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#define CLUTTER_MICRO_VERSION (@CLUTTER_MICRO_VERSION@)
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/**
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* CLUTTER_VERSION:
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*
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* The full version of the Clutter library, like 1.2.3
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*/
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#define CLUTTER_VERSION @CLUTTER_VERSION@
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/**
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* CLUTTER_VERSION_S:
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*
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* The full version of the Clutter library, in string form (suited for
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* string concatenation)
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*/
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#define CLUTTER_VERSION_S "@CLUTTER_VERSION@"
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/**
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* CLUTTER_VERSION_HEX:
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*
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* Numerically encoded version of the Clutter library, like 0x010203
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*/
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#define CLUTTER_VERSION_HEX ((CLUTTER_MAJOR_VERSION << 24) | \
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(CLUTTER_MINOR_VERSION << 16) | \
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(CLUTTER_MICRO_VERSION << 8))
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/**
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* CLUTTER_CHECK_VERSION:
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* @major: major version, like 1 in 1.2.3
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* @minor: minor version, like 2 in 1.2.3
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* @micro: micro version, like 3 in 1.2.3
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*
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* Evaluates to %TRUE if the version of the Clutter library is greater
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* than @major, @minor and @micro
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*/
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#define CLUTTER_CHECK_VERSION(major,minor,micro) \
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(CLUTTER_MAJOR_VERSION > (major) || \
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(CLUTTER_MAJOR_VERSION == (major) && CLUTTER_MINOR_VERSION > (minor)) || \
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(CLUTTER_MAJOR_VERSION == (major) && CLUTTER_MINOR_VERSION == (minor) && CLUTTER_MICRO_VERSION >= (micro)))
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/**
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* CLUTTER_FLAVOUR:
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*
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* GL Windowing system used
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*
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* Since: 0.4
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*
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* Deprecated: 1.10: The macro evaluates to "deprecated" as Clutter can be
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* compiled with multiple windowing system backends. Use the various
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* CLUTTER_WINDOWING_* macros to detect the windowing system that Clutter
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* is being compiled against, and the type check macros for the
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* #ClutterBackend for a run-time check.
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*/
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#define CLUTTER_FLAVOUR "@CLUTTER_FLAVOUR@"
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/**
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* CLUTTER_COGL
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*
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* Cogl (internal GL abstraction utility library) backend. Can be "gl" or
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* "gles" currently
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*
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* Since: 0.4
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*
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* Deprecated: 1.10: The macro evaluates to "deprecated" as Cogl can be
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* compiled against multiple GL implementations.
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*/
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#define CLUTTER_COGL "@CLUTTER_COGL@"
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/**
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* CLUTTER_STAGE_TYPE:
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*
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* The default GObject type for the Clutter stage.
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*
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* Since: 0.8
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*
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* Deprecated: 1.10: The macro evaluates to "deprecated" as Clutter can
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* be compiled against multiple windowing systems. You can use the
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* CLUTTER_WINDOWING_* macros for compile-time checks, and the type
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* check macros for run-time checks.
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*/
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#define CLUTTER_STAGE_TYPE @CLUTTER_STAGE_TYPE@
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/**
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* CLUTTER_NO_FPU:
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*
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* Set to 1 if Clutter was built without FPU (i.e fixed math), 0 otherwise
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*
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* @Deprecated: 0.6: This macro is no longer defined (identical code is used
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* regardless the presence of FPU).
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*/
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#define CLUTTER_NO_FPU CLUTTER_NO_FPU_MACRO_WAS_REMOVED
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/**
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* clutter_major_version:
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*
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* The major component of the Clutter library version, e.g. 1 if the version
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* is 1.2.3
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*
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* This value can be used for run-time version checks
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*
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* For a compile-time check, use %CLUTTER_MAJOR_VERSION
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*
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* Since: 1.2
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*/
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extern const guint clutter_major_version;
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/**
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* clutter_minor_version:
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*
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* The minor component of the Clutter library version, e.g. 2 if the version
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* is 1.2.3
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*
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* This value can be used for run-time version checks
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*
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* For a compile-time check, use %CLUTTER_MINOR_VERSION
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*
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* Since: 1.2
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*/
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extern const guint clutter_minor_version;
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/**
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* clutter_micro_version:
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*
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* The micro component of the Clutter library version, e.g. 3 if the version
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* is 1.2.3
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*
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* This value can be used for run-time version checks
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*
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* For a compile-time check, use %CLUTTER_MICRO_VERSION
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*
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* Since: 1.2
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*/
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extern const guint clutter_micro_version;
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gboolean clutter_check_version (guint major,
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guint minor,
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guint micro);
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gboolean clutter_check_backend (const char *backend_type);
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G_END_DECLS
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#endif /* __CLUTTER_VERSION_H__ */
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