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Diffstat (limited to 'sc/source/ui/view/gridmerg.cxx')
| -rw-r--r-- | sc/source/ui/view/gridmerg.cxx | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/sc/source/ui/view/gridmerg.cxx b/sc/source/ui/view/gridmerg.cxx new file mode 100644 index 000000000..a21be85fc --- /dev/null +++ b/sc/source/ui/view/gridmerg.cxx @@ -0,0 +1,227 @@ +/* -*- 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 <sal/config.h> + +#include <vcl/lineinfo.hxx> +#include <vcl/outdev.hxx> + +#include <gridmerg.hxx> + +#define PAGEBREAK_LINE_DISTANCE_PIXEL 5 +#define PAGEBREAK_LINE_DASH_LEN_PIXEL 5 +#define PAGEBREAK_LINE_DASH_COUNT 1 + +ScGridMerger::ScGridMerger( OutputDevice* pOutDev, tools::Long nOnePixelX, tools::Long nOnePixelY ) + : pDev(pOutDev) + , nOneX(nOnePixelX) + , nOneY(nOnePixelY) + , nFixStart(0) + , nFixEnd(0) + , nVarStart(0) + , nVarDiff(0) + , nCount(0) + , bVertical(false) +{ + // optimize (DrawGrid) only for pixel MapMode, + // to avoid rounding errors + + bOptimize = ( pDev->GetMapMode().GetMapUnit() == MapUnit::MapPixel ); +} + +ScGridMerger::~ScGridMerger() +{ + Flush(); +} + +void ScGridMerger::AddLine( tools::Long nStart, tools::Long nEnd, tools::Long nPos ) +{ + if ( nCount ) + { + // not first line - test fix position + // more than one previous line - test distance + + if ( nStart != nFixStart || nEnd != nFixEnd ) + { + if ( nCount == 1 && nPos == nVarStart && + ( nStart == nFixEnd || + nStart == nFixEnd + ( bVertical ? nOneY : nOneX ) ) ) + { + // additional optimization: extend connected lines + // keep nCount at 1 + nFixEnd = nEnd; + } + else + Flush(); + } + else if ( nCount == 1 ) + { + nVarDiff = nPos - nVarStart; + ++nCount; + } + else if ( nPos != nVarStart + nCount * nVarDiff ) //! keep VarEnd? + Flush(); + else + ++nCount; + } + + if ( !nCount ) + { + // first line (or flushed above) - just store + + nFixStart = nStart; + nFixEnd = nEnd; + nVarStart = nPos; + nVarDiff = 0; + nCount = 1; + } +} + +void ScGridMerger::AddHorLine(bool bWorksInPixels, tools::Long nX1, tools::Long nX2, tools::Long nY, bool bDashed) +{ + if ( bWorksInPixels ) + { + Point aPoint(pDev->PixelToLogic(Point(nX1, nY))); + nX1 = aPoint.X(); + nY = aPoint.Y(); + nX2 = pDev->PixelToLogic(Point(nX2, 0)).X(); + } + + if ( bDashed ) + { + // If there are some unflushed lines they must be flushed since + // new line is of different style + if (bOptimize) { + Flush(); + bVertical = false; + } + + LineInfo aLineInfo(LineStyle::Dash, 1); + aLineInfo.SetDashCount( PAGEBREAK_LINE_DASH_COUNT ); + + // Calculating logic values of DashLen and Distance from fixed pixel values + Size aDashDistanceLen( pDev->PixelToLogic( Size( PAGEBREAK_LINE_DISTANCE_PIXEL, + PAGEBREAK_LINE_DASH_LEN_PIXEL ))); + + aLineInfo.SetDistance( aDashDistanceLen.Width() ); + aLineInfo.SetDashLen( aDashDistanceLen.Height() ); + + pDev->DrawLine( Point( nX1, nY ), Point( nX2, nY ), aLineInfo ); + } + else if ( bOptimize ) + { + if ( bVertical ) + { + Flush(); + bVertical = false; + } + AddLine( nX1, nX2, nY ); + } + else + pDev->DrawLine( Point( nX1, nY ), Point( nX2, nY ) ); +} + +void ScGridMerger::AddVerLine(bool bWorksInPixels, tools::Long nX, tools::Long nY1, tools::Long nY2, bool bDashed) +{ + if (bWorksInPixels) + { + Point aPoint(pDev->PixelToLogic(Point(nX, nY1))); + nX = aPoint.X(); + nY1 = aPoint.Y(); + nY2 = pDev->PixelToLogic(Point(0, nY2)).Y(); + } + + if ( bDashed ) + { + // If there are some unflushed lines they must be flushed since + // new line is of different style + if (bOptimize) { + Flush(); + bVertical = false; + } + + LineInfo aLineInfo(LineStyle::Dash, 1); + aLineInfo.SetDashCount( PAGEBREAK_LINE_DASH_COUNT ); + + // Calculating logic values of DashLen and Distance from fixed pixel values + Size aDashDistanceLen( pDev->PixelToLogic( Size( PAGEBREAK_LINE_DISTANCE_PIXEL, + PAGEBREAK_LINE_DASH_LEN_PIXEL ))); + + aLineInfo.SetDistance( aDashDistanceLen.Width() ); + aLineInfo.SetDashLen( aDashDistanceLen.Height() ); + + pDev->DrawLine( Point( nX, nY1 ), Point( nX, nY2 ), aLineInfo); + } + else if ( bOptimize ) + { + if ( !bVertical ) + { + Flush(); + bVertical = true; + } + AddLine( nY1, nY2, nX ); + } + else + pDev->DrawLine( Point( nX, nY1 ), Point( nX, nY2 ) ); +} + +void ScGridMerger::Flush() +{ + if (!nCount) + return; + + if (bVertical) + { + if ( nCount == 1 ) + pDev->DrawLine( Point( nVarStart, nFixStart ), Point( nVarStart, nFixEnd ) ); + else + { + tools::Long nVarEnd = nVarStart + ( nCount - 1 ) * nVarDiff; + if ( nVarDiff < 0 ) + { + // nVarDiff is negative in RTL layout mode + // Change the positions so DrawGrid is called with a positive distance + // (nVarStart / nVarDiff can be modified, aren't used after Flush) + + nVarDiff = -nVarDiff; + tools::Long nTemp = nVarStart; + nVarStart = nVarEnd; + nVarEnd = nTemp; + } + pDev->DrawGrid( tools::Rectangle( nVarStart, nFixStart, nVarEnd, nFixEnd ), + Size( nVarDiff, nFixEnd - nFixStart ), + DrawGridFlags::VertLines ); + } + } + else + { + if ( nCount == 1 ) + pDev->DrawLine( Point( nFixStart, nVarStart ), Point( nFixEnd, nVarStart ) ); + else + { + tools::Long nVarEnd = nVarStart + ( nCount - 1 ) * nVarDiff; + pDev->DrawGrid( tools::Rectangle( nFixStart, nVarStart, nFixEnd, nVarEnd ), + Size( nFixEnd - nFixStart, nVarDiff ), + DrawGridFlags::HorzLines ); + } + } + nCount = 0; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |