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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <tools/poly.hxx>
#include <vcl/salbtype.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/region.hxx>
#include <vcl/bmpacc.hxx>
#include <bmpfast.hxx>
void BitmapWriteAccess::SetLineColor( const Color& rColor )
{
delete mpLineColor;
if( rColor.GetTransparency() == 255 )
mpLineColor = NULL;
else
mpLineColor = ( HasPalette() ? new BitmapColor( (sal_uInt8) GetBestPaletteIndex( rColor ) ) : new BitmapColor( rColor ) );
}
void BitmapWriteAccess::SetFillColor( const Color& rColor )
{
delete mpFillColor;
if( rColor.GetTransparency() == 255 )
mpFillColor = NULL;
else
mpFillColor = ( HasPalette() ? new BitmapColor( (sal_uInt8) GetBestPaletteIndex( rColor ) ) : new BitmapColor( rColor ) );
}
void BitmapWriteAccess::Erase( const Color& rColor )
{
// convert the color format from RGB to palette index if needed
// TODO: provide and use Erase( BitmapColor& method)
BitmapColor aColor = rColor;
if( HasPalette() )
aColor = BitmapColor( (sal_uInt8)GetBestPaletteIndex( rColor) );
// try fast bitmap method first
if( ImplFastEraseBitmap( *mpBuffer, aColor ) )
return;
// use the canonical method to clear the bitmap
BitmapColor* pOldFillColor = mpFillColor ? new BitmapColor( *mpFillColor ) : NULL;
const Point aPoint;
const Rectangle aRect( aPoint, maBitmap.GetSizePixel() );
SetFillColor( rColor );
FillRect( aRect );
delete mpFillColor;
mpFillColor = pOldFillColor;
}
void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
{
if( mpLineColor )
{
const BitmapColor& rLineColor = *mpLineColor;
long nX, nY;
if ( rStart.X() == rEnd.X() )
{
// Vertical Line
const long nEndY = rEnd.Y();
nX = rStart.X();
nY = rStart.Y();
if ( nEndY > nY )
{
for (; nY <= nEndY; nY++ )
SetPixel( nY, nX, rLineColor );
}
else
{
for (; nY >= nEndY; nY-- )
SetPixel( nY, nX, rLineColor );
}
}
else if ( rStart.Y() == rEnd.Y() )
{
// Horizontal Line
const long nEndX = rEnd.X();
nX = rStart.X();
nY = rStart.Y();
if ( nEndX > nX )
{
for (; nX <= nEndX; nX++ )
SetPixel( nY, nX, rLineColor );
}
else
{
for (; nX >= nEndX; nX-- )
SetPixel( nY, nX, rLineColor );
}
}
else
{
const long nDX = labs( rEnd.X() - rStart.X() );
const long nDY = labs( rEnd.Y() - rStart.Y() );
long nX1;
long nY1;
long nX2;
long nY2;
if ( nDX >= nDY )
{
if ( rStart.X() < rEnd.X() )
{
nX1 = rStart.X();
nY1 = rStart.Y();
nX2 = rEnd.X();
nY2 = rEnd.Y();
}
else
{
nX1 = rEnd.X();
nY1 = rEnd.Y();
nX2 = rStart.X();
nY2 = rStart.Y();
}
const long nDYX = ( nDY - nDX ) << 1;
const long nDY2 = nDY << 1;
long nD = nDY2 - nDX;
bool bPos = nY1 < nY2;
for ( nX = nX1, nY = nY1; nX <= nX2; nX++ )
{
SetPixel( nY, nX, rLineColor );
if ( nD < 0 )
nD += nDY2;
else
{
nD += nDYX;
if ( bPos )
nY++;
else
nY--;
}
}
}
else
{
if ( rStart.Y() < rEnd.Y() )
{
nX1 = rStart.X();
nY1 = rStart.Y();
nX2 = rEnd.X();
nY2 = rEnd.Y();
}
else
{
nX1 = rEnd.X();
nY1 = rEnd.Y();
nX2 = rStart.X();
nY2 = rStart.Y();
}
const long nDYX = ( nDX - nDY ) << 1;
const long nDY2 = nDX << 1;
long nD = nDY2 - nDY;
bool bPos = nX1 < nX2;
for ( nX = nX1, nY = nY1; nY <= nY2; nY++ )
{
SetPixel( nY, nX, rLineColor );
if ( nD < 0 )
nD += nDY2;
else
{
nD += nDYX;
if ( bPos )
nX++;
else
nX--;
}
}
}
}
}
}
void BitmapWriteAccess::FillRect( const Rectangle& rRect )
{
if( mpFillColor )
{
const BitmapColor& rFillColor = *mpFillColor;
Point aPoint;
Rectangle aRect( aPoint, maBitmap.GetSizePixel() );
aRect.Intersection( rRect );
if( !aRect.IsEmpty() )
{
const long nStartX = rRect.Left();
const long nStartY = rRect.Top();
const long nEndX = rRect.Right();
const long nEndY = rRect.Bottom();
for( long nY = nStartY; nY <= nEndY; nY++ )
for( long nX = nStartX; nX <= nEndX; nX++ )
SetPixel( nY, nX, rFillColor );
}
}
}
void BitmapWriteAccess::DrawRect( const Rectangle& rRect )
{
if( mpFillColor )
FillRect( rRect );
if( mpLineColor && ( !mpFillColor || ( *mpFillColor != *mpLineColor ) ) )
{
DrawLine( rRect.TopLeft(), rRect.TopRight() );
DrawLine( rRect.TopRight(), rRect.BottomRight() );
DrawLine( rRect.BottomRight(), rRect.BottomLeft() );
DrawLine( rRect.BottomLeft(), rRect.TopLeft() );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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