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//Copyright Paul Reiche, Fred Ford. 1992-2002
/*
* 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.
*/
#include "oscill.h"
#include "setup.h"
// for OffScreenContext
#include "libs/graphics/gfx_common.h"
#include "libs/graphics/drawable.h"
#include "libs/sound/sound.h"
#include "libs/sound/trackplayer.h"
static FRAME scope_frame;
static int scope_init = 0;
static FRAME scopeWork;
static Color scopeColor;
static EXTENT scopeSize;
BOOLEAN oscillDisabled = FALSE;
void
InitOscilloscope (FRAME scopeBg)
{
scope_frame = scopeBg;
if (!scope_init)
{
EXTENT size = GetFrameBounds (scope_frame);
POINT midPt = {size.width / 2, size.height / 2};
// mid-image pixel defines the color of scope lines
scopeColor = GetFramePixel (scope_frame, midPt);
// insist that scope lines be purely opaque
scopeColor.a = 0xff;
scopeWork = CaptureDrawable (CreateDrawable (
WANT_PIXMAP | MAPPED_TO_DISPLAY,
size.width, size.height, 1));
// assume and subtract the borders
scopeSize.width = size.width - 2;
scopeSize.height = size.height - 2;
scope_init = 1;
}
}
void
UninitOscilloscope (void)
{
// XXX: Is never called (BUG?)
DestroyDrawable (ReleaseDrawable (scopeWork));
scopeWork = NULL;
scope_init = 0;
}
// draws the oscilloscope
void
DrawOscilloscope (void)
{
STAMP s;
BYTE scope_data[128];
if (oscillDisabled)
return;
assert ((size_t)scopeSize.width <= sizeof scope_data);
assert (scopeSize.height < 256);
if (GraphForegroundStream (scope_data, scopeSize.width, scopeSize.height,
usingSpeech))
{
int i;
CONTEXT oldContext;
oldContext = SetContext (OffScreenContext);
SetContextFGFrame (scopeWork);
SetContextClipRect (NULL);
// draw the background image
s.origin.x = 0;
s.origin.y = 0;
s.frame = scope_frame;
DrawStamp (&s);
// draw the scope lines
SetContextForeGroundColor (scopeColor);
for (i = 0; i < scopeSize.width - 1; ++i)
{
LINE line;
line.first.x = i + 1;
line.first.y = scope_data[i] + 1;
line.second.x = i + 2;
line.second.y = scope_data[i + 1] + 1;
DrawLine (&line);
}
SetContext (oldContext);
s.frame = scopeWork;
}
else
{ // no data -- draw blank scope background
s.frame = scope_frame;
}
// draw the final scope image to screen
s.origin.x = 0;
s.origin.y = 0;
DrawStamp (&s);
}
static STAMP sliderStamp;
static STAMP buttonStamp;
static BOOLEAN sliderChanged = FALSE;
int sliderSpace; // slider width - button width
BOOLEAN sliderDisabled = FALSE;
/*
* Initialise the communication progress bar
* x - x location of slider
* y - y location of slider
* width - width of slider
* height - height of slider
* bwidth - width of button indicating current progress
* bheight - height of button indicating progress
* f - image for the slider
*/
void
InitSlider (int x, int y, int width, FRAME sliderFrame, FRAME buttonFrame)
{
EXTENT sliderSize = GetFrameBounds (sliderFrame);
EXTENT buttonSize = GetFrameBounds (buttonFrame);
sliderStamp.origin.x = x;
sliderStamp.origin.y = y;
sliderStamp.frame = sliderFrame;
buttonStamp.origin.x = x;
buttonStamp.origin.y = y - ((buttonSize.height - sliderSize.height) / 2);
buttonStamp.frame = buttonFrame;
sliderSpace = width - buttonSize.width;
}
void
SetSliderImage (FRAME f)
{
sliderChanged = TRUE;
buttonStamp.frame = f;
}
void
DrawSlider (void)
{
int offs;
static int last_offs = -1;
if (sliderDisabled)
return;
offs = GetTrackPosition (sliderSpace);
if (offs != last_offs || sliderChanged)
{
sliderChanged = FALSE;
last_offs = offs;
buttonStamp.origin.x = sliderStamp.origin.x + offs;
BatchGraphics ();
DrawStamp (&sliderStamp);
DrawStamp (&buttonStamp);
UnbatchGraphics ();
}
}
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