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Diffstat (limited to 'vcl/source/gdi/bmpacc3.cxx')
| -rw-r--r-- | vcl/source/gdi/bmpacc3.cxx | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/vcl/source/gdi/bmpacc3.cxx b/vcl/source/gdi/bmpacc3.cxx new file mode 100644 index 000000000..f2fc66427 --- /dev/null +++ b/vcl/source/gdi/bmpacc3.cxx @@ -0,0 +1,278 @@ +/* -*- 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 <vcl/bitmap.hxx> + +#include <bmpfast.hxx> +#include <bitmapwriteaccess.hxx> + +void BitmapWriteAccess::SetLineColor( const Color& rColor ) +{ + if (rColor.GetTransparency() == 255) + { + mpLineColor.reset(); + } + else + { + if (HasPalette()) + { + mpLineColor = BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rColor))); + } + else + { + mpLineColor = BitmapColor(rColor); + } + } +} + +void BitmapWriteAccess::SetFillColor() +{ + mpFillColor.reset(); +} + +void BitmapWriteAccess::SetFillColor( const Color& rColor ) +{ + if (rColor.GetTransparency() == 255) + { + mpFillColor.reset(); + } + else + { + if (HasPalette()) + { + mpFillColor = BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rColor))); + } + else + { + mpFillColor = 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(static_cast<sal_uInt8>(GetBestPaletteIndex(rColor))); + } + + // try fast bitmap method first + if (ImplFastEraseBitmap(*mpBuffer, aColor)) + return; + + tools::Rectangle aRect(Point(), maBitmap.GetSizePixel()); + if (aRect.IsEmpty()) + return; + // clear the bitmap by filling the first line pixel by pixel, + // then dup the first line over each other line + Scanline pFirstScanline = GetScanline(0); + const long nEndX = aRect.Right(); + for (long nX = 0; nX <= nEndX; ++nX) + SetPixelOnData(pFirstScanline, nX, rColor); + const auto nScanlineSize = GetScanlineSize(); + const long nEndY = aRect.Bottom(); + for (long nY = 1; nY <= nEndY; nY++) + { + Scanline pDestScanline = GetScanline(nY); + memcpy(pDestScanline, pFirstScanline, nScanlineSize); + } +} + +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 tools::Rectangle& rRect ) +{ + if (mpFillColor) + { + const BitmapColor& rFillColor = *mpFillColor; + tools::Rectangle aRect(Point(), 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++) + { + Scanline pScanline = GetScanline( nY ); + for (long nX = nStartX; nX <= nEndX; nX++) + { + SetPixelOnData(pScanline, nX, rFillColor); + } + } + } + } +} + +void BitmapWriteAccess::DrawRect( const tools::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: */ |