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Diffstat (limited to 'svx/source/unodraw/unobrushitemhelper.cxx')
| -rw-r--r-- | svx/source/unodraw/unobrushitemhelper.cxx | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/svx/source/unodraw/unobrushitemhelper.cxx b/svx/source/unodraw/unobrushitemhelper.cxx new file mode 100644 index 0000000000..ff475e8b70 --- /dev/null +++ b/svx/source/unodraw/unobrushitemhelper.cxx @@ -0,0 +1,347 @@ +/* -*- 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 <algorithm> + +#include <osl/diagnose.h> +#include <svl/itemset.hxx> +#include <svx/unobrushitemhelper.hxx> +#include <svx/xfillit0.hxx> +#include <svx/xbtmpit.hxx> +#include <svx/xflbmtit.hxx> +#include <svx/xflbmpit.hxx> +#include <svx/xflftrit.hxx> +#include <svx/xflbstit.hxx> +#include <svx/xflbckit.hxx> +#include <svx/xflhtit.hxx> +#include <svx/xflclit.hxx> +#include <svx/xfltrit.hxx> + +using namespace com::sun::star; + +void setSvxBrushItemAsFillAttributesToTargetSet(const SvxBrushItem& rBrush, SfxItemSet& rToSet) +{ + // Clear all items from the DrawingLayer FillStyle range (if we have any). All + // items that need to be set will be set as hard attributes + for(sal_uInt16 a(XATTR_FILL_FIRST); rToSet.Count() && a < XATTR_FILL_LAST; a++) + { + rToSet.ClearItem(a); + } + + const sal_uInt8 nTransparency(255 - rBrush.GetColor().GetAlpha()); + + // tdf#89478 check for image first + if (GPOS_NONE != rBrush.GetGraphicPos()) + { + // we have a graphic fill, set fill style + rToSet.Put(XFillStyleItem(drawing::FillStyle_BITMAP)); + + // set graphic (if available) + const Graphic* pGraphic = rBrush.GetGraphic(); + + if(pGraphic) + { + rToSet.Put(XFillBitmapItem(OUString(), *pGraphic)); + } + else + { + OSL_ENSURE(false, "Could not get Graphic from SvxBrushItem (!)"); + } + + if(GPOS_AREA == rBrush.GetGraphicPos()) + { + // stretch, also means no tile (both items are defaulted to true) + rToSet.Put(XFillBmpStretchItem(true)); + rToSet.Put(XFillBmpTileItem(false)); + + // default for stretch is also top-left, but this will not be visible + rToSet.Put(XFillBmpPosItem(RectPoint::LT)); + } + else if(GPOS_TILED == rBrush.GetGraphicPos()) + { + // tiled, also means no stretch (both items are defaulted to true) + rToSet.Put(XFillBmpStretchItem(false)); + rToSet.Put(XFillBmpTileItem(true)); + + // default for tiled is top-left + rToSet.Put(XFillBmpPosItem(RectPoint::LT)); + } + else + { + // everything else means no tile and no stretch + rToSet.Put(XFillBmpStretchItem(false)); + rToSet.Put(XFillBmpTileItem(false)); + + RectPoint aRectPoint(RectPoint::MM); + + switch(rBrush.GetGraphicPos()) + { + case GPOS_LT: aRectPoint = RectPoint::LT; break; + case GPOS_MT: aRectPoint = RectPoint::MT; break; + case GPOS_RT: aRectPoint = RectPoint::RT; break; + case GPOS_LM: aRectPoint = RectPoint::LM; break; + case GPOS_MM: aRectPoint = RectPoint::MM; break; + case GPOS_RM: aRectPoint = RectPoint::RM; break; + case GPOS_LB: aRectPoint = RectPoint::LB; break; + case GPOS_MB: aRectPoint = RectPoint::MB; break; + case GPOS_RB: aRectPoint = RectPoint::RB; break; + default: break; // GPOS_NONE, GPOS_AREA and GPOS_TILED already handled + } + + rToSet.Put(XFillBmpPosItem(aRectPoint)); + } + + // check for graphic's transparency + const sal_Int8 nGraphicTransparency(rBrush.getGraphicTransparency()); + + if(0 != nGraphicTransparency) + { + // nGraphicTransparency is in range [0..100] + rToSet.Put(XFillTransparenceItem(nGraphicTransparency)); + } + } + else if (0xff != nTransparency) + { + // we have a color fill + const Color aColor(rBrush.GetColor().GetRGBColor()); + + rToSet.Put(XFillStyleItem(drawing::FillStyle_SOLID)); + XFillColorItem aFillColorItem(OUString(), aColor); + aFillColorItem.setComplexColor(rBrush.getComplexColor()); + rToSet.Put(aFillColorItem); + + // #125189# nTransparency is in range [0..254], convert to [0..100] which is used in + // XFillTransparenceItem (caution with the range which is in an *item-specific* range) + rToSet.Put(XFillTransparenceItem(((static_cast<sal_Int32>(nTransparency) * 100) + 127) / 254)); + } + else + { + // GPOS_NONE == rBrush.GetGraphicPos() && 0xff == rBrush.GetColor().GetTransparency(), + // still need to rescue the color used. There are sequences used on the UNO API at + // import time (OLE. e.g. chart) which first set RGB color (MID_BACK_COLOR_R_G_B, + // color stays transparent) and then set transparency (MID_BACK_COLOR_TRANSPARENCY) + // to zero later. When not saving the color, it will be lost. + // Also need to set the FillStyle to NONE to express the 0xff transparency flag; this + // is needed when e.g. first transparency is set to 0xff and then a Graphic gets set. + // When not changing the FillStyle, the next getSvxBrushItemFromSourceSet *will* return + // to drawing::FillStyle_SOLID with the rescued color. + const Color aColor = rBrush.GetColor().GetRGBColor(); + + rToSet.Put(XFillStyleItem(drawing::FillStyle_NONE)); + XFillColorItem aFillColorItem(OUString(), aColor); + rToSet.Put(aFillColorItem); + } +} + +static sal_uInt16 getTransparenceForSvxBrushItem(const SfxItemSet& rSourceSet, bool bSearchInParents) +{ + sal_uInt16 nFillTransparence(rSourceSet.Get(XATTR_FILLTRANSPARENCE, bSearchInParents).GetValue()); + const XFillFloatTransparenceItem* pGradientItem = nullptr; + + if((pGradientItem = rSourceSet.GetItemIfSet(XATTR_FILLFLOATTRANSPARENCE, bSearchInParents)) + && pGradientItem->IsEnabled()) + { + const basegfx::BGradient& rGradient = pGradientItem->GetGradientValue(); + const sal_uInt16 nStartLuminance(Color(rGradient.GetColorStops().front().getStopColor()).GetLuminance()); + const sal_uInt16 nEndLuminance(Color(rGradient.GetColorStops().back().getStopColor()).GetLuminance()); + + // luminance is [0..255], transparence needs to be in [0..100].Maximum is 51200, thus sal_uInt16 is okay to use + nFillTransparence = static_cast< sal_uInt16 >(((nStartLuminance + nEndLuminance) * 100) / 512); + } + + return nFillTransparence; +} + +static std::unique_ptr<SvxBrushItem> getSvxBrushItemForSolid(const SfxItemSet& rSourceSet, bool bSearchInParents, sal_uInt16 nBackgroundID) +{ + auto const& rFillColorItem = rSourceSet.Get(XATTR_FILLCOLOR, bSearchInParents); + model::ComplexColor aFillComplexColor = rFillColorItem.getComplexColor(); + Color aFillColor = rFillColorItem.GetColorValue(); + + // get evtl. mixed transparence + const sal_uInt16 nFillTransparence(getTransparenceForSvxBrushItem(rSourceSet, bSearchInParents)); + + if(0 != nFillTransparence) + { + // #i125189# nFillTransparence is in range [0..100] and needs to be in [0..254] unsigned + // It is necessary to use the maximum of 0xfe for transparence for the SvxBrushItem + // since the oxff value is used for special purposes (like no fill and derive from parent) + const sal_uInt8 aTargetTrans(std::min(sal_uInt8(0xfe), static_cast< sal_uInt8 >((nFillTransparence * 254) / 100))); + + aFillColor.SetAlpha(255 - aTargetTrans); + } + + return std::make_unique<SvxBrushItem>(aFillColor, aFillComplexColor, nBackgroundID); +} + +std::unique_ptr<SvxBrushItem> getSvxBrushItemFromSourceSet(const SfxItemSet& rSourceSet, sal_uInt16 nBackgroundID, bool bSearchInParents, bool bXMLImportHack) +{ + const XFillStyleItem* pXFillStyleItem(rSourceSet.GetItem<XFillStyleItem>(XATTR_FILLSTYLE, bSearchInParents)); + + if(!pXFillStyleItem || drawing::FillStyle_NONE == pXFillStyleItem->GetValue()) + { + // no fill, still need to rescue the evtl. set RGB color, but use as transparent color (we have drawing::FillStyle_NONE) + Color aFillColor(rSourceSet.Get(XATTR_FILLCOLOR, bSearchInParents).GetColorValue()); + + // for writerfilter: when fill style is none, then don't allow anything other than 0 or auto. + if (!bXMLImportHack && aFillColor != Color(0)) + aFillColor = COL_AUTO; + + aFillColor.SetAlpha(0); + + return std::make_unique<SvxBrushItem>(aFillColor, nBackgroundID); + } + + std::unique_ptr<SvxBrushItem> xRetval; + + switch(pXFillStyleItem->GetValue()) + { + case drawing::FillStyle_NONE: + { + // already handled above, can not happen again + break; + } + case drawing::FillStyle_SOLID: + { + // create SvxBrushItem with fill color + xRetval = getSvxBrushItemForSolid(rSourceSet, bSearchInParents, nBackgroundID); + break; + } + case drawing::FillStyle_GRADIENT: + { + // cannot be directly supported, but do the best possible + const basegfx::BGradient aBGradient(rSourceSet.Get(XATTR_FILLGRADIENT).GetGradientValue()); + const basegfx::BColor aStartColor(aBGradient.GetColorStops().front().getStopColor() * (aBGradient.GetStartIntens() * 0.01)); + const basegfx::BColor aEndColor(aBGradient.GetColorStops().back().getStopColor() * (aBGradient.GetEndIntens() * 0.01)); + + // use half/half mixed color from gradient start and end + Color aMixedColor((aStartColor + aEndColor) * 0.5); + + // get evtl. mixed transparence + const sal_uInt16 nFillTransparence(getTransparenceForSvxBrushItem(rSourceSet, bSearchInParents)); + + if(0 != nFillTransparence) + { + // #i125189# nFillTransparence is in range [0..100] and needs to be in [0..254] unsigned + // It is necessary to use the maximum of 0xfe for transparence for the SvxBrushItem + // since the oxff value is used for special purposes (like no fill and derive from parent) + const sal_uInt8 aTargetTrans(std::min(sal_uInt8(0xfe), static_cast< sal_uInt8 >((nFillTransparence * 254) / 100))); + + aMixedColor.SetAlpha(255 - aTargetTrans); + } + + xRetval = std::make_unique<SvxBrushItem>(aMixedColor, nBackgroundID); + break; + } + case drawing::FillStyle_HATCH: + { + // cannot be directly supported, but do the best possible + const XHatch& rHatch(rSourceSet.Get(XATTR_FILLHATCH).GetHatchValue()); + const bool bFillBackground(rSourceSet.Get(XATTR_FILLBACKGROUND).GetValue()); + + if(bFillBackground) + { + // hatch is background-filled, use FillColor as if drawing::FillStyle_SOLID + xRetval = getSvxBrushItemForSolid(rSourceSet, bSearchInParents, nBackgroundID); + } + else + { + // hatch is not background-filled and using hatch color would be too dark; compensate + // somewhat by making it more transparent + Color aHatchColor(rHatch.GetColor()); + + // get evtl. mixed transparence + sal_uInt16 nFillTransparence(getTransparenceForSvxBrushItem(rSourceSet, bSearchInParents)); + + // take half orig transparence, add half transparent, clamp result + nFillTransparence = std::clamp(static_cast<sal_uInt16>((nFillTransparence / 2) + 50), sal_uInt16(0), sal_uInt16(255)); + + // #i125189# nFillTransparence is in range [0..100] and needs to be in [0..254] unsigned + // It is necessary to use the maximum of 0xfe for transparence for the SvxBrushItem + // since the oxff value is used for special purposes (like no fill and derive from parent) + const sal_uInt8 aTargetTrans(std::min(sal_uInt8(0xfe), static_cast< sal_uInt8 >((nFillTransparence * 254) / 100))); + + aHatchColor.SetAlpha(255 - aTargetTrans); + xRetval = std::make_unique<SvxBrushItem>(aHatchColor, nBackgroundID); + } + + break; + } + case drawing::FillStyle_BITMAP: + { + // create SvxBrushItem with bitmap info and flags + const XFillBitmapItem& rBmpItm = rSourceSet.Get(XATTR_FILLBITMAP, bSearchInParents); + const Graphic aGraphic(rBmpItm.GetGraphicObject().GetGraphic()); + + // continue independent of evtl. GraphicType::NONE as aGraphic.GetType(), we still need to rescue positions + SvxGraphicPosition aSvxGraphicPosition(GPOS_NONE); + const XFillBmpStretchItem& rStretchItem = rSourceSet.Get(XATTR_FILLBMP_STRETCH, bSearchInParents); + const XFillBmpTileItem& rTileItem = rSourceSet.Get(XATTR_FILLBMP_TILE, bSearchInParents); + + if(rTileItem.GetValue()) + { + aSvxGraphicPosition = GPOS_TILED; + } + else if(rStretchItem.GetValue()) + { + aSvxGraphicPosition = GPOS_AREA; + } + else + { + const XFillBmpPosItem& rPosItem = rSourceSet.Get(XATTR_FILLBMP_POS, bSearchInParents); + + switch(rPosItem.GetValue()) + { + case RectPoint::LT: aSvxGraphicPosition = GPOS_LT; break; + case RectPoint::MT: aSvxGraphicPosition = GPOS_MT; break; + case RectPoint::RT: aSvxGraphicPosition = GPOS_RT; break; + case RectPoint::LM: aSvxGraphicPosition = GPOS_LM; break; + case RectPoint::MM: aSvxGraphicPosition = GPOS_MM; break; + case RectPoint::RM: aSvxGraphicPosition = GPOS_RM; break; + case RectPoint::LB: aSvxGraphicPosition = GPOS_LB; break; + case RectPoint::MB: aSvxGraphicPosition = GPOS_MB; break; + case RectPoint::RB: aSvxGraphicPosition = GPOS_RB; break; + } + } + + // create with given graphic and position + xRetval = std::make_unique<SvxBrushItem>(aGraphic, aSvxGraphicPosition, nBackgroundID); + + // get evtl. mixed transparence + const sal_uInt16 nFillTransparence(getTransparenceForSvxBrushItem(rSourceSet, bSearchInParents)); + + if(0 != nFillTransparence) + { + // #i125189# nFillTransparence is in range [0..100] and needs to be in [0..100] signed + xRetval->setGraphicTransparency(static_cast< sal_Int8 >(nFillTransparence)); + } + + break; + } + default: + xRetval = std::make_unique<SvxBrushItem>(nBackgroundID); + break; + } + + return xRetval; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |