Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 342 insertions, 0 deletions

diff --git a/svx/source/unodraw/unobrushitemhelper.cxx b/svx/source/unodraw/unobrushitemhelper.cxx
new file mode 100644
index 000000000..bc9d04747
--- /dev/null
+++ b/svx/source/unodraw/unobrushitemhelper.cxx
@@ -0,0 +1,342 @@
+/* -*- 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));
+        rToSet.Put(XFillColorItem(OUString(), aColor));
+
+        // #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));
+        rToSet.Put(XFillColorItem(OUString(), aColor));
+    }
+}
+
+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 XGradient& rGradient = pGradientItem->GetGradientValue();
+        const sal_uInt16 nStartLuminance(rGradient.GetStartColor().GetLuminance());
+        const sal_uInt16 nEndLuminance(rGradient.GetEndColor().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)
+{
+    Color aFillColor(rSourceSet.Get(XATTR_FILLCOLOR, bSearchInParents).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, 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 XGradient aXGradient(rSourceSet.Get(XATTR_FILLGRADIENT).GetGradientValue());
+            const basegfx::BColor aStartColor(aXGradient.GetStartColor().getBColor() * (aXGradient.GetStartIntens() * 0.01));
+            const basegfx::BColor aEndColor(aXGradient.GetEndColor().getBColor() * (aXGradient.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: */