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Diffstat (limited to 'vcl/source/outdev/wallpaper.cxx')
| -rw-r--r-- | vcl/source/outdev/wallpaper.cxx | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/vcl/source/outdev/wallpaper.cxx b/vcl/source/outdev/wallpaper.cxx new file mode 100644 index 000000000..2cd655c0e --- /dev/null +++ b/vcl/source/outdev/wallpaper.cxx @@ -0,0 +1,396 @@ +/* -*- 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/metaact.hxx> +#include <vcl/virdev.hxx> + +#include <cassert> + +Color OutputDevice::GetReadableFontColor(const Color& rFontColor, const Color& rBgColor) const +{ + if (rBgColor.IsDark() && rFontColor.IsDark()) + return COL_WHITE; + else if (rBgColor.IsBright() && rFontColor.IsBright()) + return COL_BLACK; + else + return rFontColor; +} + +void OutputDevice::DrawWallpaper( const tools::Rectangle& rRect, + const Wallpaper& rWallpaper ) +{ + assert(!is_double_buffered_window()); + + if ( mpMetaFile ) + mpMetaFile->AddAction( new MetaWallpaperAction( rRect, rWallpaper ) ); + + if ( !IsDeviceOutputNecessary() || ImplIsRecordLayout() ) + return; + + if ( rWallpaper.GetStyle() != WallpaperStyle::NONE ) + { + tools::Rectangle aRect = LogicToPixel( rRect ); + aRect.Justify(); + + if ( !aRect.IsEmpty() ) + { + DrawWallpaper( aRect.Left(), aRect.Top(), aRect.GetWidth(), aRect.GetHeight(), + rWallpaper ); + } + } + + if( mpAlphaVDev ) + mpAlphaVDev->DrawWallpaper( rRect, rWallpaper ); +} + +void OutputDevice::DrawWallpaper( tools::Long nX, tools::Long nY, + tools::Long nWidth, tools::Long nHeight, + const Wallpaper& rWallpaper ) +{ + assert(!is_double_buffered_window()); + + if( rWallpaper.IsBitmap() ) + DrawBitmapWallpaper( nX, nY, nWidth, nHeight, rWallpaper ); + else if( rWallpaper.IsGradient() ) + DrawGradientWallpaper( nX, nY, nWidth, nHeight, rWallpaper ); + else + DrawColorWallpaper( nX, nY, nWidth, nHeight, rWallpaper ); +} + +void OutputDevice::DrawColorWallpaper( tools::Long nX, tools::Long nY, + tools::Long nWidth, tools::Long nHeight, + const Wallpaper& rWallpaper ) +{ + assert(!is_double_buffered_window()); + + // draw wallpaper without border + Color aOldLineColor = GetLineColor(); + Color aOldFillColor = GetFillColor(); + SetLineColor(); + SetFillColor( rWallpaper.GetColor() ); + + bool bMap = mbMap; + EnableMapMode( false ); + DrawRect( tools::Rectangle( Point( nX, nY ), Size( nWidth, nHeight ) ) ); + SetLineColor( aOldLineColor ); + SetFillColor( aOldFillColor ); + EnableMapMode( bMap ); +} + +void OutputDevice::Erase() +{ + if ( !IsDeviceOutputNecessary() || ImplIsRecordLayout() ) + return; + + if ( mbBackground ) + { + RasterOp eRasterOp = GetRasterOp(); + if ( eRasterOp != RasterOp::OverPaint ) + SetRasterOp( RasterOp::OverPaint ); + DrawWallpaper( 0, 0, mnOutWidth, mnOutHeight, maBackground ); + if ( eRasterOp != RasterOp::OverPaint ) + SetRasterOp( eRasterOp ); + } + + if( mpAlphaVDev ) + mpAlphaVDev->Erase(); +} + +void OutputDevice::Erase(const tools::Rectangle& rRect) +{ + const RasterOp eRasterOp = GetRasterOp(); + if ( eRasterOp != RasterOp::OverPaint ) + SetRasterOp( RasterOp::OverPaint ); + DrawWallpaper(rRect, GetBackground()); + if ( eRasterOp != RasterOp::OverPaint ) + SetRasterOp( eRasterOp ); + + if (mpAlphaVDev) + mpAlphaVDev->Erase(rRect); +} + +void OutputDevice::DrawBitmapWallpaper( tools::Long nX, tools::Long nY, + tools::Long nWidth, tools::Long nHeight, + const Wallpaper& rWallpaper ) +{ + assert(!is_double_buffered_window()); + + const BitmapEx* pCached = rWallpaper.ImplGetCachedBitmap(); + + GDIMetaFile* pOldMetaFile = mpMetaFile; + const bool bOldMap = mbMap; + + BitmapEx aBmpEx; + if( pCached ) + aBmpEx = *pCached; + else + aBmpEx = rWallpaper.GetBitmap(); + + const tools::Long nBmpWidth = aBmpEx.GetSizePixel().Width(); + const tools::Long nBmpHeight = aBmpEx.GetSizePixel().Height(); + const bool bTransparent = aBmpEx.IsAlpha(); + + const WallpaperStyle eStyle = rWallpaper.GetStyle(); + + bool bDrawGradientBackground = false; + bool bDrawColorBackground = false; + + // draw background + if( bTransparent ) + { + if( rWallpaper.IsGradient() ) + bDrawGradientBackground = true; + else + { + if( !pCached && !rWallpaper.GetColor().IsTransparent() ) + { + ScopedVclPtrInstance< VirtualDevice > aVDev( *this ); + aVDev->SetBackground( rWallpaper.GetColor() ); + aVDev->SetOutputSizePixel( Size( nBmpWidth, nBmpHeight ) ); + aVDev->DrawBitmapEx( Point(), aBmpEx ); + aBmpEx = aVDev->GetBitmapEx( Point(), aVDev->GetOutputSizePixel() ); + } + + bDrawColorBackground = true; + } + } + else if( eStyle != WallpaperStyle::Tile && eStyle != WallpaperStyle::Scale ) + { + if( rWallpaper.IsGradient() ) + bDrawGradientBackground = true; + else + bDrawColorBackground = true; + } + + // background of bitmap? + if( bDrawGradientBackground ) + { + DrawGradientWallpaper( nX, nY, nWidth, nHeight, rWallpaper ); + } + else if( bDrawColorBackground && bTransparent ) + { + DrawColorWallpaper( nX, nY, nWidth, nHeight, rWallpaper ); + bDrawColorBackground = false; + } + + Point aPos; + Size aSize; + + // calc pos and size + if( rWallpaper.IsRect() ) + { + const tools::Rectangle aBound( LogicToPixel( rWallpaper.GetRect() ) ); + aPos = aBound.TopLeft(); + aSize = aBound.GetSize(); + } + else + { + aPos = Point( 0, 0 ); + aSize = Size( nWidth, nHeight ); + } + + mpMetaFile = nullptr; + EnableMapMode( false ); + Push( vcl::PushFlags::CLIPREGION ); + IntersectClipRegion( tools::Rectangle( Point( nX, nY ), Size( nWidth, nHeight ) ) ); + + bool bDrawn = false; + + switch( eStyle ) + { + case WallpaperStyle::Scale: + if( !pCached || ( pCached->GetSizePixel() != aSize ) ) + { + if( pCached ) + rWallpaper.ImplReleaseCachedBitmap(); + + aBmpEx = rWallpaper.GetBitmap(); + aBmpEx.Scale( aSize ); + aBmpEx = BitmapEx( aBmpEx.GetBitmap().CreateDisplayBitmap( this ), aBmpEx.GetAlpha() ); + } + break; + + case WallpaperStyle::TopLeft: + break; + + case WallpaperStyle::Top: + aPos.AdjustX(( aSize.Width() - nBmpWidth ) >> 1 ); + break; + + case WallpaperStyle::TopRight: + aPos.AdjustX( aSize.Width() - nBmpWidth); + break; + + case WallpaperStyle::Left: + aPos.AdjustY(( aSize.Height() - nBmpHeight ) >> 1 ); + break; + + case WallpaperStyle::Center: + aPos.AdjustX(( aSize.Width() - nBmpWidth ) >> 1 ); + aPos.AdjustY(( aSize.Height() - nBmpHeight ) >> 1 ); + break; + + case WallpaperStyle::Right: + aPos.AdjustX(aSize.Width() - nBmpWidth); + aPos.AdjustY(( aSize.Height() - nBmpHeight ) >> 1 ); + break; + + case WallpaperStyle::BottomLeft: + aPos.AdjustY( aSize.Height() - nBmpHeight ); + break; + + case WallpaperStyle::Bottom: + aPos.AdjustX(( aSize.Width() - nBmpWidth ) >> 1 ); + aPos.AdjustY( aSize.Height() - nBmpHeight ); + break; + + case WallpaperStyle::BottomRight: + aPos.AdjustX( aSize.Width() - nBmpWidth ); + aPos.AdjustY( aSize.Height() - nBmpHeight ); + break; + + default: + { + const tools::Long nRight = nX + nWidth - 1; + const tools::Long nBottom = nY + nHeight - 1; + tools::Long nFirstX; + tools::Long nFirstY; + + if( eStyle == WallpaperStyle::Tile ) + { + nFirstX = aPos.X(); + nFirstY = aPos.Y(); + } + else + { + nFirstX = aPos.X() + ( ( aSize.Width() - nBmpWidth ) >> 1 ); + nFirstY = aPos.Y() + ( ( aSize.Height() - nBmpHeight ) >> 1 ); + } + + const tools::Long nOffX = ( nFirstX - nX ) % nBmpWidth; + const tools::Long nOffY = ( nFirstY - nY ) % nBmpHeight; + tools::Long nStartX = nX + nOffX; + tools::Long nStartY = nY + nOffY; + + if( nOffX > 0 ) + nStartX -= nBmpWidth; + + if( nOffY > 0 ) + nStartY -= nBmpHeight; + + for( tools::Long nBmpY = nStartY; nBmpY <= nBottom; nBmpY += nBmpHeight ) + { + for( tools::Long nBmpX = nStartX; nBmpX <= nRight; nBmpX += nBmpWidth ) + { + DrawBitmapEx( Point( nBmpX, nBmpY ), aBmpEx ); + } + } + bDrawn = true; + } + break; + } + + if( !bDrawn ) + { + // optimized for non-transparent bitmaps + if( bDrawColorBackground ) + { + const Size aBmpSize( aBmpEx.GetSizePixel() ); + const Point aTmpPoint; + const tools::Rectangle aOutRect( aTmpPoint, GetOutputSizePixel() ); + const tools::Rectangle aColRect( Point( nX, nY ), Size( nWidth, nHeight ) ); + + tools::Rectangle aWorkRect( 0, 0, aOutRect.Right(), aPos.Y() - 1 ); + aWorkRect.Justify(); + aWorkRect.Intersection( aColRect ); + if( !aWorkRect.IsEmpty() ) + { + DrawColorWallpaper( aWorkRect.Left(), aWorkRect.Top(), + aWorkRect.GetWidth(), aWorkRect.GetHeight(), + rWallpaper ); + } + + aWorkRect = tools::Rectangle( 0, aPos.Y(), aPos.X() - 1, aPos.Y() + aBmpSize.Height() - 1 ); + aWorkRect.Justify(); + aWorkRect.Intersection( aColRect ); + if( !aWorkRect.IsEmpty() ) + { + DrawColorWallpaper( aWorkRect.Left(), aWorkRect.Top(), + aWorkRect.GetWidth(), aWorkRect.GetHeight(), + rWallpaper ); + } + + aWorkRect = tools::Rectangle( aPos.X() + aBmpSize.Width(), aPos.Y(), + aOutRect.Right(), aPos.Y() + aBmpSize.Height() - 1 ); + aWorkRect.Justify(); + aWorkRect.Intersection( aColRect ); + if( !aWorkRect.IsEmpty() ) + { + DrawColorWallpaper( aWorkRect.Left(), aWorkRect.Top(), + aWorkRect.GetWidth(), aWorkRect.GetHeight(), + rWallpaper ); + } + + aWorkRect = tools::Rectangle( 0, aPos.Y() + aBmpSize.Height(), + aOutRect.Right(), aOutRect.Bottom() ); + aWorkRect.Justify(); + aWorkRect.Intersection( aColRect ); + if( !aWorkRect.IsEmpty() ) + { + DrawColorWallpaper( aWorkRect.Left(), aWorkRect.Top(), + aWorkRect.GetWidth(), aWorkRect.GetHeight(), + rWallpaper ); + } + } + + DrawBitmapEx( aPos, aBmpEx ); + } + + rWallpaper.ImplSetCachedBitmap( aBmpEx ); + + Pop(); + EnableMapMode( bOldMap ); + mpMetaFile = pOldMetaFile; +} + +void OutputDevice::DrawGradientWallpaper( tools::Long nX, tools::Long nY, + tools::Long nWidth, tools::Long nHeight, + const Wallpaper& rWallpaper ) +{ + assert(!is_double_buffered_window()); + + tools::Rectangle aBound; + GDIMetaFile* pOldMetaFile = mpMetaFile; + const bool bOldMap = mbMap; + + aBound = tools::Rectangle( Point( nX, nY ), Size( nWidth, nHeight ) ); + + mpMetaFile = nullptr; + EnableMapMode( false ); + Push( vcl::PushFlags::CLIPREGION ); + IntersectClipRegion( tools::Rectangle( Point( nX, nY ), Size( nWidth, nHeight ) ) ); + + DrawGradient( aBound, rWallpaper.GetGradient() ); + + Pop(); + EnableMapMode( bOldMap ); + mpMetaFile = pOldMetaFile; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |