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/*
Copyright (C) 2009 Red Hat, Inc.
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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _H_PLATFORM_UTILS
#define _H_PLATFORM_UTILS
#define mb() __asm {lock add [esp], 0}
template<class T, class FreeRes = FreeObject<T>, T invalid = NULL >
class AutoRes {
public:
AutoRes() : res (invalid) {}
AutoRes(T inRes) : res (inRes) {}
~AutoRes() { set(invalid); }
void set(T inRes) {if (res != invalid) free_res(res); res = inRes; }
T get() {return res;}
T release() {T tmp = res; res = invalid; return tmp; }
bool valid() { return res != invalid; }
private:
AutoRes(const AutoRes&);
AutoRes& operator = (const AutoRes&);
private:
T res;
FreeRes free_res;
};
class Delete_DC {
public:
void operator () (HDC dc) { DeleteDC(dc);}
};
typedef AutoRes<HDC, Delete_DC> AutoDC;
class Delete_Object {
public:
void operator () (HGDIOBJ obj) { DeleteObject(obj);}
};
typedef AutoRes<HGDIOBJ, Delete_Object> AutoGDIObject;
class DeleteOGLContext {
public:
void operator () (HGLRC ctx) { wglDeleteContext(ctx);}
};
typedef AutoRes<HGLRC, DeleteOGLContext> AutoOGLCtx;
HDC create_compatible_dc();
HBITMAP get_bitmap_res(int id);
HBITMAP get_alpha_bitmap_res(int id);
class WindowDC {
public:
WindowDC(HWND window) : _window (window), _dc (GetDC(window)) {}
~WindowDC() { ReleaseDC(_window, _dc);}
HDC operator * () { return _dc;}
private:
HWND _window;
HDC _dc;
};
typedef AutoRes<HDC, Delete_DC> AutoReleaseDC;
const char* sys_err_to_str(int error);
#endif
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