LookingGlass/client/include/util.h

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/**
* Looking Glass
* Copyright (C) 2017-2021 The Looking Glass Authors
* https://looking-glass.io
*
* 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, write to the Free Software Foundation, Inc., 59
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _H_LG_UTIL_
#define _H_LG_UTIL_
#include <stdlib.h>
#include <stdbool.h>
#include "common/types.h"
#define min(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; })
#define max(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a > _b ? _a : _b; })
// reads the specified file into a new buffer
// the callee must free the buffer
bool util_fileGetContents(const char * filename, char ** buffer, size_t * length);
void util_cursorToInt(double ex, double ey, int *x, int *y);
bool util_guestCurToLocal(struct DoublePoint *local);
void util_localCurToGuest(struct DoublePoint *guest);
void util_rotatePoint(struct DoublePoint *point);
bool util_hasGLExt(const char * exts, const char * ext);
int util_mergeOverlappingRects(FrameDamageRect * out, const FrameDamageRect * rects, int count);
static inline double util_clamp(double x, double min, double max)
{
if (x < min) return min;
if (x > max) return max;
return x;
}
char * util_getUIFont(const char * fontName);
#endif