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// WinCanvas.cpp
// this file is part of Context Free
// ---------------------
// Copyright (C) 2005-2008 John Horigan - john@glyphic.com
//
// 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.
//
// John Horigan can be contacted at john@glyphic.com or at
// John Horigan, 1209 Villa St., Mountain View, CA 94041-1123, USA
//
//
#include "WinCanvas.h"
#include "WinSystem.h"
#include <windows.h>
void WinCanvas::start(bool clear, const agg::rgba& bk, int actualWidth, int actualHeight)
{
aggCanvas::start(clear, bk, actualWidth, actualHeight);
}
void WinCanvas::end()
{
aggCanvas::end();
// This message tells the Document view to update the window
mSystem->statusUpdate();
}
WinCanvas::WinCanvas(WinSystem* sys, aggCanvas::PixelFormat pixfmt,
int width, int height, agg::rgba bkgrnd)
: aggCanvas(pixfmt),
mPixelFormat(pixfmt),
mBM(0),
mBackground(bkgrnd),
mSystem(sys)
{
mWidth = width;
mHeight = height;
mStride = mWidth * aggCanvas::BytesPerPixel[mPixelFormat];
// pad row stride to DWORD boundary
mStride += ((-mStride) & 3);
mBM = (char*)(new DWORD[mStride * mHeight / 4]);
aggCanvas::attach((void*)mBM, mWidth, mHeight, mStride);
// clear the bitmap
aggCanvas::start(true, bkgrnd, width, height);
aggCanvas::end();
}
WinCanvas::~WinCanvas()
{
delete[] mBM;
}
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