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// ---------------------------------------------------------------------------------
//
// Copyright (C) 2003-2013 Fons Adriaensen <fons@linuxaudio.org>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ---------------------------------------------------------------------------------
#include "clxclient.h"
X_meter::X_meter (X_window *parent, X_meter_style *style, X_scale_style *scale,
int xp, int yp, int xs, int ys) :
X_window (parent, xp, yp, xs, ys, style->bg),
_style (style),
_scale (scale),
_x (scale->marg),
_y (scale->marg),
_d (0)
{
_d0 = _i = -1;
_d1 = _d2 = _scale->pixlen () - 1;
x_add_events (ExposureMask);
}
void X_meter::handle_event (XEvent *E)
{
switch (E->type)
{
case Expose:
expose ((XExposeEvent *) E);
break;
}
}
void X_meter::expose (XExposeEvent *)
{
XClearWindow (dpy (), win ());
XSetLineAttributes (dpy (), dgc (), 0, LineSolid, CapButt, JoinBevel);
plotsect (_d0, _i, _d0, _d1, _style->act.c0, _style->off.c0);
plotsect (_d1, _i, _d0, _d1, _style->act.c0, _style->off.c0);
plotsect (_d1, _i, _d1, _d2, _style->act.c1, _style->off.c1);
plotsect (_d2, _i, _d1, _d2, _style->act.c1, _style->off.c1);
}
void X_meter::set_val (float v)
{
int i = _scale->calcpix (v);
if (i != _i)
{
plotsect (_i, i, _d0, _d1, _style->act.c0, _style->off.c0);
plotsect (_i, i, _d1, _d2, _style->act.c1, _style->off.c1);
_i = i;
}
}
void X_meter::set_ref (float v)
{
int t = _scale->calcpix (v) - 1;
if (t < _d0) t = _d0;
if (t != _d1)
{
plotsect (_d1, t, _d0, _i, _style->act.c0, _style->act.c1);
plotsect (_d1, t, _i, _d2, _style->off.c0, _style->off.c1);
_d1 = t;
}
}
void X_meter::plotsect (int i0, int i1, int imin, int imax, int cl, int cr)
{
int a, b;
a = (i0 < imin) ? imin : (i0 > imax) ? imax : i0;
b = (i1 < imin) ? imin : (i1 > imax) ? imax : i1;
if (a != b)
{
GC gc = disp ()->dgc ();
XSetFunction (dpy (), gc, GXcopy);
XSetLineAttributes (dpy (), gc, 1, LineSolid, CapButt, JoinBevel);
if (a < b)
{
XSetForeground (dpy (), gc, cl);
psect (gc, b, a);
plotmarks (a, b, cl);
}
else
{
XSetForeground (dpy (), gc, cr);
psect (gc, a, b);
plotmarks (b, a, cr);
}
}
}
void X_meter::plotmarks (int a, int b, unsigned long c)
{
int i, k, *p;
k = _scale->nseg + 1;
p = _scale->pix;
if (c == _style->act.c0 || c == _style->act.c1) XSetForeground (dpy (), dgc (), _style->act.mk);
else XSetForeground (dpy (), dgc (), _style->off.mk);
while (k--)
{
i = *p++;
if (i > b) break;
if (i > a) pmark (dgc (), i);
}
}
X_hmeter::X_hmeter (X_window *parent, X_meter_style *style, X_scale_style *scale,
int xp, int yp, int h) :
X_meter (parent, style, scale, xp, yp, scale->length (), h)
{
_d = h - 2 * scale->marg;
}
void X_hmeter::psect (GC g, int a, int b)
{
XFillRectangle (dpy (), win (), g, _x + b + 1, _y, a - b, _d);
}
void X_hmeter::pmark (GC g, int a)
{
XDrawLine (dpy (), win (), g, _x + a, _y + 1, _x + a, _y + _d);
}
X_vmeter::X_vmeter (X_window *parent, X_meter_style *style, X_scale_style *scale,
int xp, int yp, int w) :
X_meter (parent, style, scale, xp, yp, w, scale->length ())
{
_d = w - 2 * scale->marg;
_y += scale->pixlen () - 1;
}
void X_vmeter::psect (GC g, int a, int b)
{
XFillRectangle (dpy (), win (), g, _x, _y - a, _d, a - b);
}
void X_vmeter::pmark (GC g, int a)
{
XDrawLine (dpy (), win (), g, _x, _y - a, _x + _d, _y - a);
}
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