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, 295 insertions, 0 deletions

diff --git a/drawinglayer/source/geometry/viewinformation2d.cxx b/drawinglayer/source/geometry/viewinformation2d.cxx
new file mode 100644
index 000000000..bcd6f020f
--- /dev/null
+++ b/drawinglayer/source/geometry/viewinformation2d.cxx
@@ -0,0 +1,295 @@
+/* -*- 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 <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/range/b2drange.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/drawing/XDrawPage.hpp>
+#include <com/sun/star/geometry/AffineMatrix2D.hpp>
+#include <com/sun/star/geometry/RealRectangle2D.hpp>
+
+using namespace com::sun::star;
+
+namespace drawinglayer::geometry
+{
+namespace
+{
+constexpr OUStringLiteral g_PropertyName_ObjectTransformation = u"ObjectTransformation";
+constexpr OUStringLiteral g_PropertyName_ViewTransformation = u"ViewTransformation";
+constexpr OUStringLiteral g_PropertyName_Viewport = u"Viewport";
+constexpr OUStringLiteral g_PropertyName_Time = u"Time";
+constexpr OUStringLiteral g_PropertyName_VisualizedPage = u"VisualizedPage";
+constexpr OUStringLiteral g_PropertyName_ReducedDisplayQuality = u"ReducedDisplayQuality";
+}
+
+class ImpViewInformation2D
+{
+private:
+    // ViewInformation2D implementation can change refcount, so we have only
+    // two memory regions for pairs of ViewInformation2D/ImpViewInformation2D
+    friend class ::drawinglayer::geometry::ViewInformation2D;
+
+protected:
+    // the object transformation
+    basegfx::B2DHomMatrix maObjectTransformation;
+
+    // the view transformation
+    basegfx::B2DHomMatrix maViewTransformation;
+
+    // the ObjectToView and it's inverse, both on demand from ObjectTransformation
+    // and ViewTransformation
+    basegfx::B2DHomMatrix maObjectToViewTransformation;
+    basegfx::B2DHomMatrix maInverseObjectToViewTransformation;
+
+    // the visible range and the on-demand one in ViewCoordinates
+    basegfx::B2DRange maViewport;
+    basegfx::B2DRange maDiscreteViewport;
+
+    // the DrawPage which is target of visualisation. This is needed e.g. for
+    // the view-dependent decomposition of PageNumber TextFields.
+    // This parameter is buffered here, but mainly resides in mxExtendedInformation,
+    // so it will be interpreted, but held there. It will also not be added
+    // to mxExtendedInformation in impFillViewInformationFromContent (it's there already)
+    uno::Reference<drawing::XDrawPage> mxVisualizedPage;
+
+    // the point in time
+    double mfViewTime;
+
+    bool mbReducedDisplayQuality : 1;
+
+public:
+    ImpViewInformation2D(const basegfx::B2DHomMatrix& rObjectTransformation,
+                         const basegfx::B2DHomMatrix& rViewTransformation,
+                         const basegfx::B2DRange& rViewport,
+                         const uno::Reference<drawing::XDrawPage>& rxDrawPage, double fViewTime,
+                         bool bReducedDisplayQuality)
+        : maObjectTransformation(rObjectTransformation)
+        , maViewTransformation(rViewTransformation)
+        , maViewport(rViewport)
+        , mxVisualizedPage(rxDrawPage)
+        , mfViewTime(fViewTime)
+        , mbReducedDisplayQuality(bReducedDisplayQuality)
+    {
+    }
+
+    ImpViewInformation2D()
+        : mfViewTime(0.0)
+        , mbReducedDisplayQuality(false)
+    {
+    }
+
+    const basegfx::B2DHomMatrix& getObjectTransformation() const { return maObjectTransformation; }
+
+    const basegfx::B2DHomMatrix& getViewTransformation() const { return maViewTransformation; }
+
+    const basegfx::B2DRange& getViewport() const { return maViewport; }
+
+    const basegfx::B2DRange& getDiscreteViewport() const
+    {
+        if (maDiscreteViewport.isEmpty() && !maViewport.isEmpty())
+        {
+            basegfx::B2DRange aDiscreteViewport(maViewport);
+            aDiscreteViewport.transform(getViewTransformation());
+            const_cast<ImpViewInformation2D*>(this)->maDiscreteViewport = aDiscreteViewport;
+        }
+
+        return maDiscreteViewport;
+    }
+
+    const basegfx::B2DHomMatrix& getObjectToViewTransformation() const
+    {
+        if (maObjectToViewTransformation.isIdentity()
+            && (!maObjectTransformation.isIdentity() || !maViewTransformation.isIdentity()))
+        {
+            basegfx::B2DHomMatrix aObjectToView(maViewTransformation * maObjectTransformation);
+            const_cast<ImpViewInformation2D*>(this)->maObjectToViewTransformation = aObjectToView;
+        }
+
+        return maObjectToViewTransformation;
+    }
+
+    const basegfx::B2DHomMatrix& getInverseObjectToViewTransformation() const
+    {
+        if (maInverseObjectToViewTransformation.isIdentity()
+            && (!maObjectTransformation.isIdentity() || !maViewTransformation.isIdentity()))
+        {
+            basegfx::B2DHomMatrix aInverseObjectToView(maViewTransformation
+                                                       * maObjectTransformation);
+            aInverseObjectToView.invert();
+            const_cast<ImpViewInformation2D*>(this)->maInverseObjectToViewTransformation
+                = aInverseObjectToView;
+        }
+
+        return maInverseObjectToViewTransformation;
+    }
+
+    double getViewTime() const { return mfViewTime; }
+
+    const uno::Reference<drawing::XDrawPage>& getVisualizedPage() const { return mxVisualizedPage; }
+
+    bool getReducedDisplayQuality() const { return mbReducedDisplayQuality; }
+
+    bool operator==(const ImpViewInformation2D& rCandidate) const
+    {
+        return (maObjectTransformation == rCandidate.maObjectTransformation
+                && maViewTransformation == rCandidate.maViewTransformation
+                && maViewport == rCandidate.maViewport
+                && mxVisualizedPage == rCandidate.mxVisualizedPage
+                && mfViewTime == rCandidate.mfViewTime);
+    }
+};
+
+namespace
+{
+ViewInformation2D::ImplType& theGlobalDefault()
+{
+    static ViewInformation2D::ImplType SINGLETON;
+    return SINGLETON;
+}
+}
+
+ViewInformation2D::ViewInformation2D(const basegfx::B2DHomMatrix& rObjectTransformation,
+                                     const basegfx::B2DHomMatrix& rViewTransformation,
+                                     const basegfx::B2DRange& rViewport,
+                                     const uno::Reference<drawing::XDrawPage>& rxDrawPage,
+                                     double fViewTime, bool bReducedDisplayQuality)
+    : mpViewInformation2D(ImpViewInformation2D(rObjectTransformation, rViewTransformation,
+                                               rViewport, rxDrawPage, fViewTime,
+                                               bReducedDisplayQuality))
+{
+}
+
+ViewInformation2D::ViewInformation2D()
+    : mpViewInformation2D(theGlobalDefault())
+{
+}
+
+ViewInformation2D::ViewInformation2D(const ViewInformation2D&) = default;
+
+ViewInformation2D::ViewInformation2D(ViewInformation2D&&) = default;
+
+ViewInformation2D::~ViewInformation2D() = default;
+
+ViewInformation2D& ViewInformation2D::operator=(const ViewInformation2D&) = default;
+
+ViewInformation2D& ViewInformation2D::operator=(ViewInformation2D&&) = default;
+
+bool ViewInformation2D::operator==(const ViewInformation2D& rCandidate) const
+{
+    return rCandidate.mpViewInformation2D == mpViewInformation2D;
+}
+
+const basegfx::B2DHomMatrix& ViewInformation2D::getObjectTransformation() const
+{
+    return mpViewInformation2D->getObjectTransformation();
+}
+
+const basegfx::B2DHomMatrix& ViewInformation2D::getViewTransformation() const
+{
+    return mpViewInformation2D->getViewTransformation();
+}
+
+const basegfx::B2DRange& ViewInformation2D::getViewport() const
+{
+    return mpViewInformation2D->getViewport();
+}
+
+double ViewInformation2D::getViewTime() const { return mpViewInformation2D->getViewTime(); }
+
+const uno::Reference<drawing::XDrawPage>& ViewInformation2D::getVisualizedPage() const
+{
+    return mpViewInformation2D->getVisualizedPage();
+}
+
+const basegfx::B2DHomMatrix& ViewInformation2D::getObjectToViewTransformation() const
+{
+    return mpViewInformation2D->getObjectToViewTransformation();
+}
+
+const basegfx::B2DHomMatrix& ViewInformation2D::getInverseObjectToViewTransformation() const
+{
+    return mpViewInformation2D->getInverseObjectToViewTransformation();
+}
+
+const basegfx::B2DRange& ViewInformation2D::getDiscreteViewport() const
+{
+    return mpViewInformation2D->getDiscreteViewport();
+}
+
+bool ViewInformation2D::getReducedDisplayQuality() const
+{
+    return mpViewInformation2D->getReducedDisplayQuality();
+}
+
+ViewInformation2D
+createViewInformation2D(const css::uno::Sequence<css::beans::PropertyValue>& rViewParameters)
+{
+    if (!rViewParameters.hasElements())
+        return ViewInformation2D();
+
+    bool bReducedDisplayQuality = false;
+    basegfx::B2DHomMatrix aObjectTransformation;
+    basegfx::B2DHomMatrix aViewTransformation;
+    basegfx::B2DRange aViewport;
+    double fViewTime = 0.0;
+    uno::Reference<drawing::XDrawPage> xVisualizedPage;
+
+    for (auto const& rPropertyValue : rViewParameters)
+    {
+        if (rPropertyValue.Name == g_PropertyName_ReducedDisplayQuality)
+        {
+            rPropertyValue.Value >>= bReducedDisplayQuality;
+        }
+        else if (rPropertyValue.Name == g_PropertyName_ObjectTransformation)
+        {
+            css::geometry::AffineMatrix2D aAffineMatrix2D;
+            rPropertyValue.Value >>= aAffineMatrix2D;
+            basegfx::unotools::homMatrixFromAffineMatrix(aObjectTransformation, aAffineMatrix2D);
+        }
+        else if (rPropertyValue.Name == g_PropertyName_ViewTransformation)
+        {
+            css::geometry::AffineMatrix2D aAffineMatrix2D;
+            rPropertyValue.Value >>= aAffineMatrix2D;
+            basegfx::unotools::homMatrixFromAffineMatrix(aViewTransformation, aAffineMatrix2D);
+        }
+        else if (rPropertyValue.Name == g_PropertyName_Viewport)
+        {
+            css::geometry::RealRectangle2D aUnoViewport;
+            rPropertyValue.Value >>= aUnoViewport;
+            aViewport = basegfx::unotools::b2DRectangleFromRealRectangle2D(aUnoViewport);
+        }
+        else if (rPropertyValue.Name == g_PropertyName_Time)
+        {
+            rPropertyValue.Value >>= fViewTime;
+        }
+        else if (rPropertyValue.Name == g_PropertyName_VisualizedPage)
+        {
+            rPropertyValue.Value >>= xVisualizedPage;
+        }
+    }
+
+    return ViewInformation2D(aObjectTransformation, aViewTransformation, aViewport, xVisualizedPage,
+                             fViewTime, bReducedDisplayQuality);
+}
+
+} // end of namespace drawinglayer::geometry
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */