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, 272 insertions, 0 deletions

diff --git a/drawinglayer/source/tools/converters.cxx b/drawinglayer/source/tools/converters.cxx
new file mode 100644
index 000000000..c0a92a8f4
--- /dev/null
+++ b/drawinglayer/source/tools/converters.cxx
@@ -0,0 +1,272 @@
+/* -*- 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 <drawinglayer/geometry/viewinformation2d.hxx>
+#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
+#include <drawinglayer/processor2d/baseprocessor2d.hxx>
+#include <drawinglayer/processor2d/processor2dtools.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/virdev.hxx>
+#include <com/sun/star/geometry/RealRectangle2D.hpp>
+#include <tools/diagnose_ex.h>
+
+#include <drawinglayer/converters.hxx>
+
+#ifdef DBG_UTIL
+#include <tools/stream.hxx>
+#include <vcl/pngwrite.hxx>
+#endif
+
+namespace drawinglayer
+{
+
+    BitmapEx convertToBitmapEx(
+        drawinglayer::primitive2d::Primitive2DContainer&& rSeq,
+        const geometry::ViewInformation2D& rViewInformation2D,
+        sal_uInt32 nDiscreteWidth,
+        sal_uInt32 nDiscreteHeight,
+        sal_uInt32 nMaxSquarePixels)
+    {
+        BitmapEx aRetval;
+
+        if(!rSeq.empty() && nDiscreteWidth && nDiscreteHeight)
+        {
+            // get destination size in pixels
+            const MapMode aMapModePixel(MapUnit::MapPixel);
+            const sal_uInt32 nViewVisibleArea(nDiscreteWidth * nDiscreteHeight);
+            drawinglayer::primitive2d::Primitive2DContainer aSequence;
+
+            if(nViewVisibleArea > nMaxSquarePixels)
+            {
+                // reduce render size
+                double fReduceFactor = sqrt(static_cast<double>(nMaxSquarePixels) / static_cast<double>(nViewVisibleArea));
+                nDiscreteWidth = basegfx::fround(static_cast<double>(nDiscreteWidth) * fReduceFactor);
+                nDiscreteHeight = basegfx::fround(static_cast<double>(nDiscreteHeight) * fReduceFactor);
+
+                const drawinglayer::primitive2d::Primitive2DReference aEmbed(
+                    new drawinglayer::primitive2d::TransformPrimitive2D(
+                        basegfx::utils::createScaleB2DHomMatrix(fReduceFactor, fReduceFactor),
+                        std::move(rSeq)));
+
+                aSequence = drawinglayer::primitive2d::Primitive2DContainer { aEmbed };
+            }
+            else
+                aSequence = std::move(rSeq);
+
+            const Point aEmptyPoint;
+            const Size aSizePixel(nDiscreteWidth, nDiscreteHeight);
+            ScopedVclPtrInstance< VirtualDevice > pContent;
+
+            // prepare vdev
+            pContent->SetOutputSizePixel(aSizePixel, false);
+            pContent->SetMapMode(aMapModePixel);
+
+            // set to all white
+            pContent->SetBackground(Wallpaper(COL_WHITE));
+            pContent->Erase();
+
+            // create pixel processor, also already takes care of AAing and
+            // checking the getOptionsDrawinglayer().IsAntiAliasing() switch. If
+            // not wanted, change after this call as needed
+            std::unique_ptr<processor2d::BaseProcessor2D> pContentProcessor = processor2d::createPixelProcessor2DFromOutputDevice(
+                *pContent,
+                rViewInformation2D);
+
+#ifdef DBG_UTIL
+            static bool bDoSaveForVisualControl(false); // loplugin:constvars:ignore
+#endif
+            // render content
+            pContentProcessor->process(aSequence);
+
+            // get content
+            pContent->EnableMapMode(false);
+            const Bitmap aContent(pContent->GetBitmap(aEmptyPoint, aSizePixel));
+
+#ifdef DBG_UTIL
+            if(bDoSaveForVisualControl)
+            {
+                SvFileStream aNew(
+#ifdef _WIN32
+                "c:\\test_content.png"
+#else
+                "~/test_content.png"
+#endif
+                , StreamMode::WRITE|StreamMode::TRUNC);
+                BitmapEx aContentEx(aContent);
+                vcl::PNGWriter aPNGWriter(aContentEx);
+                aPNGWriter.Write(aNew);
+            }
+#endif
+            // prepare for mask creation
+            pContent->SetMapMode(aMapModePixel);
+
+            // set alpha to all white (fully transparent)
+            pContent->Erase();
+
+            // embed primitives to paint them black
+            const primitive2d::Primitive2DReference xRef(
+                new primitive2d::ModifiedColorPrimitive2D(
+                    std::move(aSequence),
+                    std::make_shared<basegfx::BColorModifier_replace>(
+                            basegfx::BColor(0.0, 0.0, 0.0))));
+            const primitive2d::Primitive2DContainer xSeq { xRef };
+
+            // render
+            pContentProcessor->process(xSeq);
+            pContentProcessor.reset();
+
+            // get alpha channel from vdev
+            pContent->EnableMapMode(false);
+            const Bitmap aAlpha(pContent->GetBitmap(aEmptyPoint, aSizePixel));
+#ifdef DBG_UTIL
+            if(bDoSaveForVisualControl)
+            {
+                SvFileStream aNew(
+#ifdef _WIN32
+                "c:\\test_alpha.png"
+#else
+                "~/test_alpha.png"
+#endif
+                , StreamMode::WRITE|StreamMode::TRUNC);
+                BitmapEx aAlphaEx(aAlpha);
+                vcl::PNGWriter aPNGWriter(aAlphaEx);
+                aPNGWriter.Write(aNew);
+            }
+#endif
+
+            // create BitmapEx result
+            aRetval = BitmapEx(aContent, AlphaMask(aAlpha));
+#ifdef DBG_UTIL
+            if(bDoSaveForVisualControl)
+            {
+                SvFileStream aNew(
+#ifdef _WIN32
+                "c:\\test_combined.png"
+#else
+                "~/test_combined.png"
+#endif
+                , StreamMode::WRITE|StreamMode::TRUNC);
+                vcl::PNGWriter aPNGWriter(aRetval);
+                aPNGWriter.Write(aNew);
+            }
+#endif
+        }
+
+        return aRetval;
+    }
+
+    BitmapEx convertPrimitive2DContainerToBitmapEx(
+        primitive2d::Primitive2DContainer&& rSequence,
+        const basegfx::B2DRange& rTargetRange,
+        sal_uInt32 nMaximumQuadraticPixels,
+        const o3tl::Length eTargetUnit,
+        const std::optional<Size>& rTargetDPI)
+    {
+        if(rSequence.empty())
+            return BitmapEx();
+
+        try
+        {
+            css::geometry::RealRectangle2D aRealRect;
+            aRealRect.X1 = rTargetRange.getMinX();
+            aRealRect.Y1 = rTargetRange.getMinY();
+            aRealRect.X2 = rTargetRange.getMaxX();
+            aRealRect.Y2 = rTargetRange.getMaxY();
+
+            // get system DPI
+            Size aDPI(Application::GetDefaultDevice()->LogicToPixel(Size(1, 1), MapMode(MapUnit::MapInch)));
+            if (rTargetDPI.has_value())
+            {
+                aDPI = *rTargetDPI;
+            }
+
+            ::sal_uInt32 DPI_X = aDPI.getWidth();
+            ::sal_uInt32 DPI_Y = aDPI.getHeight();
+            const basegfx::B2DRange aRange(aRealRect.X1, aRealRect.Y1, aRealRect.X2, aRealRect.Y2);
+            const double fWidth(aRange.getWidth());
+            const double fHeight(aRange.getHeight());
+
+            if(!(basegfx::fTools::more(fWidth, 0.0) && basegfx::fTools::more(fHeight, 0.0)))
+                return BitmapEx();
+
+            if(0 == DPI_X)
+            {
+                DPI_X = 75;
+            }
+
+            if(0 == DPI_Y)
+            {
+                DPI_Y = 75;
+            }
+
+            if(0 == nMaximumQuadraticPixels)
+            {
+                nMaximumQuadraticPixels = 500000;
+            }
+
+            const auto aViewInformation2D = geometry::createViewInformation2D({});
+            const sal_uInt32 nDiscreteWidth(basegfx::fround(o3tl::convert(fWidth, eTargetUnit, o3tl::Length::in) * DPI_X));
+            const sal_uInt32 nDiscreteHeight(basegfx::fround(o3tl::convert(fHeight, eTargetUnit, o3tl::Length::in) * DPI_Y));
+
+            basegfx::B2DHomMatrix aEmbedding(
+                basegfx::utils::createTranslateB2DHomMatrix(
+                    -aRange.getMinX(),
+                    -aRange.getMinY()));
+
+            aEmbedding.scale(
+                nDiscreteWidth / fWidth,
+                nDiscreteHeight / fHeight);
+
+            const primitive2d::Primitive2DReference xEmbedRef(
+                new primitive2d::TransformPrimitive2D(
+                    aEmbedding,
+                    std::move(rSequence)));
+            primitive2d::Primitive2DContainer xEmbedSeq { xEmbedRef };
+
+            BitmapEx aBitmapEx(
+                convertToBitmapEx(
+                    std::move(xEmbedSeq),
+                    aViewInformation2D,
+                    nDiscreteWidth,
+                    nDiscreteHeight,
+                    nMaximumQuadraticPixels));
+
+            if(aBitmapEx.IsEmpty())
+                return BitmapEx();
+            aBitmapEx.SetPrefMapMode(MapMode(MapUnit::Map100thMM));
+            aBitmapEx.SetPrefSize(Size(basegfx::fround(fWidth), basegfx::fround(fHeight)));
+
+            return aBitmapEx;
+        }
+        catch (const css::uno::Exception&)
+        {
+            TOOLS_WARN_EXCEPTION("vcl", "Got no graphic::XPrimitive2DRenderer!");
+        }
+        catch (const std::exception& e)
+        {
+            SAL_WARN("vcl", "Got no graphic::XPrimitive2DRenderer! : " << e.what());
+        }
+
+        return BitmapEx();
+    }
+} // end of namespace drawinglayer
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */