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, 311 insertions, 0 deletions

diff --git a/canvas/source/directx/dx_textlayout_drawhelper.cxx b/canvas/source/directx/dx_textlayout_drawhelper.cxx
new file mode 100644
index 000000000..20ff8bd44
--- /dev/null
+++ b/canvas/source/directx/dx_textlayout_drawhelper.cxx
@@ -0,0 +1,311 @@
+/* -*- 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 <memory>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <com/sun/star/rendering/FontRequest.hpp>
+#include <com/sun/star/rendering/PanoseProportion.hpp>
+#include <com/sun/star/rendering/XCanvasFont.hpp>
+#include <comphelper/scopeguard.hxx>
+#include <i18nlangtag/languagetag.hxx>
+#include <rtl/math.hxx>
+#include <tools/color.hxx>
+#include <tools/diagnose_ex.h>
+#include <tools/poly.hxx>
+#include <vcl/canvastools.hxx>
+#include <vcl/metric.hxx>
+#include <vcl/sysdata.hxx>
+#include <vcl/virdev.hxx>
+
+#include <canvas/canvastools.hxx>
+
+#include "dx_bitmap.hxx"
+#include "dx_canvasfont.hxx"
+#include "dx_impltools.hxx"
+#include "dx_textlayout_drawhelper.hxx"
+
+using namespace ::com::sun::star;
+
+
+namespace dxcanvas
+{
+    TextLayoutDrawHelper::TextLayoutDrawHelper(
+        const uno::Reference< rendering::XGraphicDevice >& xGraphicDevice ) :
+            mxGraphicDevice(xGraphicDevice)
+    {
+    }
+
+    TextLayoutDrawHelper::~TextLayoutDrawHelper()
+    {
+    }
+
+    void TextLayoutDrawHelper::drawText(
+        const std::shared_ptr<Gdiplus::Graphics>& rGraphics,
+        const css::rendering::ViewState&       rViewState,
+        const css::rendering::RenderState&     rRenderState,
+        const ::basegfx::B2ISize&              rOutputOffset,
+        const css::rendering::StringContext&   rText,
+        const css::uno::Sequence< double >&    rLogicalAdvancements,
+        const css::uno::Reference<
+            css::rendering::XCanvasFont >&     rCanvasFont,
+        const css::geometry::Matrix2D&         rFontMatrix,
+        bool                                   bAlphaSurface,
+        bool bIsRTL)
+    {
+        HDC hdc = rGraphics->GetHDC();
+
+        // issue a ReleaseHDC() when leaving the scope
+        const ::comphelper::ScopeGuard aGuard(
+            [&rGraphics, &hdc]() mutable { rGraphics->ReleaseHDC(hdc); } );
+
+        SystemGraphicsData aSystemGraphicsData;
+        aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
+        aSystemGraphicsData.hDC = reinterpret_cast< ::HDC >(hdc);
+        ScopedVclPtrInstance<VirtualDevice> xVirtualDevice(aSystemGraphicsData, Size(1, 1), DeviceFormat::DEFAULT);
+
+        // disable font antialiasing - GDI does not handle alpha
+        // surfaces properly.
+        if( bAlphaSurface )
+            xVirtualDevice->SetAntialiasing(AntialiasingFlags::DisableText);
+
+        if(rText.Length)
+        {
+            bool test = mxGraphicDevice.is();
+            ENSURE_OR_THROW( test,
+                              "TextLayoutDrawHelper::drawText(): Invalid GraphicDevice" );
+
+            // set text color. Make sure to remove transparence part first.
+            Color aColor( COL_WHITE );
+
+            if( rRenderState.DeviceColor.getLength() > 2 )
+                aColor = vcl::unotools::doubleSequenceToColor(
+                    rRenderState.DeviceColor,
+                    mxGraphicDevice->getDeviceColorSpace());
+            aColor.SetAlpha(255);
+            xVirtualDevice->SetTextColor(aColor);
+
+            // create the font
+            const css::rendering::FontRequest& rFontRequest = rCanvasFont->getFontRequest();
+            vcl::Font aFont(
+                rFontRequest.FontDescription.FamilyName,
+                rFontRequest.FontDescription.StyleName,
+                Size( 0, ::basegfx::fround(rFontRequest.CellSize)));
+
+            aFont.SetAlignment( ALIGN_BASELINE );
+            aFont.SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==css::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE );
+            aFont.SetVertical( rFontRequest.FontDescription.IsVertical==css::util::TriState_YES );
+            aFont.SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) );
+            aFont.SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL );
+            aFont.SetPitch(
+                    rFontRequest.FontDescription.FontDescription.Proportion == rendering::PanoseProportion::MONO_SPACED
+                    ? PITCH_FIXED : PITCH_VARIABLE);
+
+            aFont.SetLanguage(LanguageTag::convertToLanguageType(rFontRequest.Locale));
+
+            // setup font color
+            aFont.SetColor( aColor );
+            aFont.SetFillColor( aColor );
+
+            CanvasFont::ImplRef pFont(tools::canvasFontFromXFont(rCanvasFont));
+            if (pFont.is() && pFont->getEmphasisMark())
+                aFont.SetEmphasisMark(FontEmphasisMark(pFont->getEmphasisMark()));
+
+            // adjust to stretched font
+            if(!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11))
+            {
+                const Size aSize = xVirtualDevice->GetFontMetric( aFont ).GetFontSize();
+                const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 );
+                double fStretch = rFontMatrix.m00 + rFontMatrix.m01;
+
+                if( !::basegfx::fTools::equalZero( fDividend) )
+                    fStretch /= fDividend;
+
+                const sal_Int32 nNewWidth = ::basegfx::fround( aSize.Width() * fStretch );
+
+                aFont.SetAverageFontWidth( nNewWidth );
+            }
+
+            // set font
+            xVirtualDevice->SetFont(aFont);
+
+            // create world transformation matrix
+            ::basegfx::B2DHomMatrix aWorldTransform;
+            ::canvas::tools::mergeViewAndRenderTransform(aWorldTransform, rViewState, rRenderState);
+
+            if(!rOutputOffset.equalZero())
+            {
+                aWorldTransform.translate(rOutputOffset.getX(), rOutputOffset.getY());
+            }
+
+            // set ViewState clipping
+            if(rViewState.Clip.is())
+            {
+                ::basegfx::B2DPolyPolygon aClipPoly(dxcanvas::tools::polyPolygonFromXPolyPolygon2D(rViewState.Clip));
+                ::basegfx::B2DHomMatrix aMatrix;
+                ::basegfx::unotools::homMatrixFromAffineMatrix(aMatrix, rViewState.AffineTransform );
+
+                if(!rOutputOffset.equalZero())
+                {
+                    aMatrix.translate(rOutputOffset.getX(), rOutputOffset.getY());
+                }
+
+                aClipPoly.transform(aMatrix);
+                const vcl::Region& rClipRegion = vcl::Region(::tools::PolyPolygon(aClipPoly));
+                xVirtualDevice->IntersectClipRegion(rClipRegion);
+            }
+
+            if(rRenderState.Clip.is())
+            {
+                ::basegfx::B2DPolyPolygon aClipPoly(dxcanvas::tools::polyPolygonFromXPolyPolygon2D(rRenderState.Clip));
+                aClipPoly.transform(aWorldTransform);
+                const vcl::Region& rClipRegion = vcl::Region(::tools::PolyPolygon(aClipPoly));
+                xVirtualDevice->IntersectClipRegion(rClipRegion);
+            }
+
+            // set world transform
+            XFORM aXForm;
+            aXForm.eM11 = static_cast<FLOAT>(aWorldTransform.get(0, 0));
+            aXForm.eM12 = static_cast<FLOAT>(aWorldTransform.get(1, 0));
+            aXForm.eM21 = static_cast<FLOAT>(aWorldTransform.get(0, 1));
+            aXForm.eM22 = static_cast<FLOAT>(aWorldTransform.get(1, 1));
+            aXForm.eDx = static_cast<FLOAT>(aWorldTransform.get(0, 2));
+            aXForm.eDy = static_cast<FLOAT>(aWorldTransform.get(1, 2));
+
+            // TODO(F3): This is NOT supported on 95/98/ME!
+            SetGraphicsMode(hdc, GM_ADVANCED);
+            SetTextAlign(hdc, TA_BASELINE);
+            SetWorldTransform(hdc, &aXForm);
+
+            // use an empty StartPosition for text rendering
+            const Point aEmptyPoint(0, 0);
+
+            // create the String
+            const OUString aText(rText.Text);
+
+            if( rLogicalAdvancements.getLength() )
+            {
+                // create the DXArray
+                const sal_Int32 nLen( rLogicalAdvancements.getLength() );
+                std::vector<sal_Int32> DXArray( nLen );
+                for( sal_Int32 i=0; i<nLen; ++i )
+                    DXArray[i] = basegfx::fround( rLogicalAdvancements[i] );
+
+                // draw the String
+                xVirtualDevice->DrawTextArray( aEmptyPoint,
+                                              aText,
+                                              DXArray,
+                                              rText.StartPosition,
+                                              rText.Length,
+                                              bIsRTL ? SalLayoutFlags::BiDiRtl : SalLayoutFlags::NONE);
+            }
+            else
+            {
+                // draw the String
+                xVirtualDevice->DrawText( aEmptyPoint,
+                                         aText,
+                                         rText.StartPosition,
+                                         rText.Length );
+            }
+        }
+    }
+
+    geometry::RealRectangle2D TextLayoutDrawHelper::queryTextBounds( const rendering::StringContext&                    rText,
+                                                                     const uno::Sequence< double >&                     rLogicalAdvancements,
+                                                                     const uno::Reference< rendering::XCanvasFont >&    rCanvasFont,
+                                                                     const geometry::Matrix2D&                          rFontMatrix )
+    {
+        if(!(rText.Length))
+            return geometry::RealRectangle2D();
+
+        // TODO(F1): Fetching default screen DC here, will yield wrong
+        // metrics when e.g. formatting for a printer!
+        SystemGraphicsData aSystemGraphicsData;
+        aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
+        aSystemGraphicsData.hDC = reinterpret_cast< ::HDC >(GetDC( nullptr ));
+        ScopedVclPtrInstance<VirtualDevice> xVirtualDevice(aSystemGraphicsData, Size(1, 1), DeviceFormat::DEFAULT);
+
+        // create the font
+        const css::rendering::FontRequest& rFontRequest = rCanvasFont->getFontRequest();
+        vcl::Font aFont(
+            rFontRequest.FontDescription.FamilyName,
+            rFontRequest.FontDescription.StyleName,
+            Size( 0, ::basegfx::fround(rFontRequest.CellSize)));
+
+        aFont.SetAlignment( ALIGN_BASELINE );
+        aFont.SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==css::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE );
+        aFont.SetVertical( rFontRequest.FontDescription.IsVertical==css::util::TriState_YES );
+        aFont.SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) );
+        aFont.SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL );
+        aFont.SetPitch(
+                rFontRequest.FontDescription.FontDescription.Proportion == rendering::PanoseProportion::MONO_SPACED
+                ? PITCH_FIXED : PITCH_VARIABLE);
+
+        // adjust to stretched font
+        if(!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11))
+        {
+            const Size aSize = xVirtualDevice->GetFontMetric( aFont ).GetFontSize();
+            const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 );
+            double fStretch = rFontMatrix.m00 + rFontMatrix.m01;
+
+            if( !::basegfx::fTools::equalZero( fDividend) )
+                fStretch /= fDividend;
+
+            const sal_Int32 nNewWidth = ::basegfx::fround( aSize.Width() * fStretch );
+
+            aFont.SetAverageFontWidth( nNewWidth );
+        }
+
+        CanvasFont::ImplRef pFont(tools::canvasFontFromXFont(rCanvasFont));
+        if (pFont.is() && pFont->getEmphasisMark())
+            aFont.SetEmphasisMark(FontEmphasisMark(pFont->getEmphasisMark()));
+
+        // set font
+        xVirtualDevice->SetFont(aFont);
+
+        // need metrics for Y offset, the XCanvas always renders
+        // relative to baseline
+        const ::FontMetric& aMetric( xVirtualDevice->GetFontMetric() );
+
+        const sal_Int32 nAboveBaseline( -aMetric.GetInternalLeading() - aMetric.GetAscent() );
+        const sal_Int32 nBelowBaseline( aMetric.GetDescent() );
+
+        if( rLogicalAdvancements.getLength() )
+        {
+            return geometry::RealRectangle2D( 0, nAboveBaseline,
+                                              rLogicalAdvancements[ rLogicalAdvancements.getLength()-1 ],
+                                              nBelowBaseline );
+        }
+        else
+        {
+            return geometry::RealRectangle2D( 0, nAboveBaseline,
+                                              xVirtualDevice->GetTextWidth(
+                                                  rText.Text,
+                                                  ::canvas::tools::numeric_cast<sal_uInt16>(rText.StartPosition),
+                                                  ::canvas::tools::numeric_cast<sal_uInt16>(rText.Length) ),
+                                              nBelowBaseline );
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */