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/*
Copyright (C) 2009-2010 Fons Adriaensen <fons@linuxaudio.org>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <math.h>
#include "tmeter.h"
XImage *Tmeter::_scale = 0;
XImage *Tmeter::_imag0 = 0;
XImage *Tmeter::_imag1 = 0;
Tmeter::Tmeter (X_window *parent, int xpos, int ypos) :
X_window (parent, xpos, ypos, XS + 2 * XM, YS + 2 * YM, 0),
_k0 (86),
_k1 (86)
{
if (!_imag0 || !_imag1 || !_scale) return;
x_add_events (ExposureMask);
}
Tmeter::~Tmeter (void)
{
}
void Tmeter::handle_event (XEvent *E)
{
switch (E->type)
{
case Expose:
expose ((XExposeEvent *) E);
break;
}
}
void Tmeter::expose (XExposeEvent *E)
{
if (E->count) return;
XSetFunction (dpy (), dgc (), GXcopy);
XPutImage (dpy (), win (), dgc (), _imag0, 0, 0, XM, YM, XS, Y1);
XPutImage (dpy (), win (), dgc (), _imag1, _k0 - 2, 0, XM + _k0 - 2, YM, 5 + _k1 - _k0, Y1);
XPutImage (dpy (), win (), dgc (), _scale, 0, 0, XM, YM + Y1, XS, Y2);
}
void Tmeter::update (float v0, float v1)
{
int k0, k1;
k0 = (int)(floorf (86.0f + 80.0f * v0 + 0.5f));
k1 = (int)(floorf (86.0f + 80.0f * v1 + 0.5f));
if (k0 < 4) k0 = 4;
if (k0 > 168) k0 = 168;
if (k1 < 4) k1 = 4;
if (k1 > 168) k1 = 168;
XSetFunction (dpy (), dgc (), GXcopy);
XPutImage (dpy (), win (), dgc (), _imag0, _k0 - 2, 0, XM + _k0 - 2, YM, 5 + _k1 - _k0, Y1);
_k0 = k0;
_k1 = k1;
XPutImage (dpy (), win (), dgc (), _imag1, _k0 - 2, 0, XM + _k0 - 2, YM, 5 + _k1 - _k0, Y1);
}
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