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/*
* Copyright (C) 2002-2004 by Jonathan Naylor G4KLX
*
* 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 "FSK441LevelGraph.h"
#include "FSK441Defs.h"
BEGIN_EVENT_TABLE(CFSK441LevelGraph, wxWindow)
EVT_PAINT(CFSK441LevelGraph::onPaint)
END_EVENT_TABLE()
CFSK441LevelGraph::CFSK441LevelGraph(wxWindow* parent, int id, const wxPoint& pos, const wxSize& size, long style, const wxString& name) :
wxWindow(parent, id, pos, size, style, name),
m_bitmap(NULL)
{
m_bitmap = new wxBitmap(FSK441_LEVEL_WIDTH, FSK441_GRAPH_HEIGHT);
// Flood the graph area with black to start with
clearGraph();
}
CFSK441LevelGraph::~CFSK441LevelGraph()
{
delete m_bitmap;
}
void CFSK441LevelGraph::addData(CFSK441Levels* levels)
{
wxASSERT(levels != NULL);
clearGraph();
wxMemoryDC memoryDC;
memoryDC.SelectObject(*m_bitmap);
memoryDC.BeginDrawing();
int lastAudioX = 0;
int lastAudioY = 0;
for (int x = 0; x < FSK441_LEVEL_WIDTH; x++) {
double audio = levels->getAudioData(x);
int yAudio = int(audio * double(FSK441_GRAPH_HEIGHT));
if (yAudio > FSK441_GRAPH_HEIGHT)
yAudio = FSK441_GRAPH_HEIGHT - 1;
int y = FSK441_GRAPH_HEIGHT - yAudio;
if (x > 0) {
memoryDC.SetPen(*wxGREEN_PEN);
memoryDC.DrawLine(lastAudioX, lastAudioY, x, y);
}
lastAudioX = x;
lastAudioY = y;
}
memoryDC.EndDrawing();
memoryDC.SelectObject(wxNullBitmap);
wxClientDC clientDC(this);
show(clientDC);
}
void CFSK441LevelGraph::onPaint(wxPaintEvent& event)
{
wxPaintDC dc(this);
show(dc);
}
void CFSK441LevelGraph::show(wxDC& dc)
{
dc.BeginDrawing();
dc.DrawBitmap(*m_bitmap, 0, 0, false);
dc.EndDrawing();
}
void CFSK441LevelGraph::clearGraph()
{
// Flood the graph area with black to start with
wxMemoryDC dc;
dc.SelectObject(*m_bitmap);
dc.BeginDrawing();
dc.SetBackground(*wxBLACK_BRUSH);
dc.Clear();
dc.EndDrawing();
}
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