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+/* -*- 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 "PresenterCanvas.hxx"
+#include "CanvasUpdateRequester.hxx"
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b2dpolygonclipper.hxx>
+#include <basegfx/range/b2drectangle.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <com/sun/star/awt/XWindow.hpp>
+#include <comphelper/compbase.hxx>
+#include <rtl/ref.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+#include <vcl/window.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace sd::presenter {
+
+//===== PresenterCustomSprite =================================================
+
+/** Wrapper around a sprite that is displayed on a PresenterCanvas.
+*/
+namespace {
+ typedef comphelper::WeakComponentImplHelper <
+ css::rendering::XCustomSprite
+ > PresenterCustomSpriteInterfaceBase;
+
+class PresenterCustomSprite final
+ : public PresenterCustomSpriteInterfaceBase
+{
+public:
+ PresenterCustomSprite (
+ const rtl::Reference<PresenterCanvas>& rpCanvas,
+ const Reference<rendering::XCustomSprite>& rxSprite,
+ const Reference<awt::XWindow>& rxBaseWindow);
+ PresenterCustomSprite(const PresenterCustomSprite&) = delete;
+ PresenterCustomSprite& operator=(const PresenterCustomSprite&) = delete;
+ virtual void disposing(std::unique_lock<std::mutex>&) override;
+
+ // XSprite
+
+ virtual void SAL_CALL setAlpha (double nAlpha) override;
+
+ virtual void SAL_CALL move (const geometry::RealPoint2D& rNewPos,
+ const rendering::ViewState& rViewState,
+ const rendering::RenderState& rRenderState) override;
+
+ virtual void SAL_CALL transform (const geometry::AffineMatrix2D& rTransformation) override;
+
+ virtual void SAL_CALL clip (const Reference<rendering::XPolyPolygon2D>& rClip) override;
+
+ virtual void SAL_CALL setPriority (double nPriority) override;
+
+ virtual void SAL_CALL show() override;
+
+ virtual void SAL_CALL hide() override;
+
+ // XCustomSprite
+
+ virtual Reference<rendering::XCanvas> SAL_CALL getContentCanvas() override;
+
+private:
+ rtl::Reference<PresenterCanvas> mpCanvas;
+ Reference<rendering::XCustomSprite> mxSprite;
+ Reference<awt::XWindow> mxBaseWindow;
+ geometry::RealPoint2D maPosition;
+
+ /// @throws css::lang::DisposedException
+ void ThrowIfDisposed();
+};
+
+}
+
+//===== PresenterCanvas =======================================================
+
+PresenterCanvas::PresenterCanvas (
+ const Reference<rendering::XSpriteCanvas>& rxUpdateCanvas,
+ const Reference<awt::XWindow>& rxUpdateWindow,
+ const Reference<rendering::XCanvas>& rxSharedCanvas,
+ const Reference<awt::XWindow>& rxSharedWindow,
+ const Reference<awt::XWindow>& rxWindow)
+ : mxUpdateCanvas(rxUpdateCanvas),
+ mxUpdateWindow(rxUpdateWindow),
+ mxSharedCanvas(rxSharedCanvas),
+ mxSharedWindow(rxSharedWindow),
+ mxWindow(rxWindow),
+ mbOffsetUpdatePending(true)
+{
+ if (mxWindow.is())
+ mxWindow->addWindowListener(this);
+
+ if (mxUpdateCanvas.is())
+ {
+ m_pUpdateRequester = CanvasUpdateRequester::Instance(mxUpdateCanvas);
+ }
+}
+
+PresenterCanvas::~PresenterCanvas()
+{
+}
+
+void PresenterCanvas::disposing(std::unique_lock<std::mutex>&)
+{
+ if (mxWindow.is())
+ {
+ mxWindow->removeWindowListener(this);
+ mxWindow.clear();
+ }
+}
+
+//----- XCanvas ---------------------------------------------------------------
+
+void SAL_CALL PresenterCanvas::clear()
+{
+ ThrowIfDisposed();
+ // ToDo: Clear the area covered by the child window. A simple forward
+ // would clear the whole shared canvas.
+}
+
+void SAL_CALL PresenterCanvas::drawPoint (
+ const css::geometry::RealPoint2D& aPoint,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ mxSharedCanvas->drawPoint(aPoint,MergeViewState(aViewState),aRenderState);
+}
+
+void SAL_CALL PresenterCanvas::drawLine (
+ const css::geometry::RealPoint2D& aStartPoint,
+ const css::geometry::RealPoint2D& aEndPoint,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ mxSharedCanvas->drawLine(aStartPoint,aEndPoint,MergeViewState(aViewState),aRenderState);
+}
+
+void SAL_CALL PresenterCanvas::drawBezier (
+ const css::geometry::RealBezierSegment2D& aBezierSegment,
+ const css::geometry::RealPoint2D& aEndPoint,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ mxSharedCanvas->drawBezier(aBezierSegment,aEndPoint,MergeViewState(aViewState),aRenderState);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL PresenterCanvas::drawPolyPolygon (
+ const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->drawPolyPolygon(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL PresenterCanvas::strokePolyPolygon (
+ const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ const css::rendering::StrokeAttributes& aStrokeAttributes)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->strokePolyPolygon(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState, aStrokeAttributes);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::strokeTexturedPolyPolygon (
+ const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ const css::uno::Sequence< css::rendering::Texture >& aTextures,
+ const css::rendering::StrokeAttributes& aStrokeAttributes)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->strokeTexturedPolyPolygon(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState, aTextures, aStrokeAttributes);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::strokeTextureMappedPolyPolygon(
+ const css::uno::Reference<css::rendering::XPolyPolygon2D >& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ const css::uno::Sequence<css::rendering::Texture>& aTextures,
+ const css::uno::Reference<css::geometry::XMapping2D>& xMapping,
+ const css::rendering::StrokeAttributes& aStrokeAttributes)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->strokeTextureMappedPolyPolygon(
+ xPolyPolygon,
+ MergeViewState(aViewState),
+ aRenderState,
+ aTextures,
+ xMapping,
+ aStrokeAttributes);
+}
+
+css::uno::Reference<css::rendering::XPolyPolygon2D> SAL_CALL
+ PresenterCanvas::queryStrokeShapes(
+ const css::uno::Reference<css::rendering::XPolyPolygon2D>& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ const css::rendering::StrokeAttributes& aStrokeAttributes)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->queryStrokeShapes(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState, aStrokeAttributes);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::fillPolyPolygon(
+ const css::uno::Reference<css::rendering::XPolyPolygon2D>& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->fillPolyPolygon(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::fillTexturedPolyPolygon(
+ const css::uno::Reference<css::rendering::XPolyPolygon2D>& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ const css::uno::Sequence<css::rendering::Texture>& xTextures)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->fillTexturedPolyPolygon(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState, xTextures);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::fillTextureMappedPolyPolygon(
+ const css::uno::Reference< css::rendering::XPolyPolygon2D >& xPolyPolygon,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ const css::uno::Sequence< css::rendering::Texture >& xTextures,
+ const css::uno::Reference< css::geometry::XMapping2D >& xMapping)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->fillTextureMappedPolyPolygon(
+ xPolyPolygon, MergeViewState(aViewState), aRenderState, xTextures, xMapping);
+}
+
+css::uno::Reference<css::rendering::XCanvasFont> SAL_CALL
+ PresenterCanvas::createFont(
+ const css::rendering::FontRequest& aFontRequest,
+ const css::uno::Sequence< css::beans::PropertyValue >& aExtraFontProperties,
+ const css::geometry::Matrix2D& aFontMatrix)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->createFont(
+ aFontRequest, aExtraFontProperties, aFontMatrix);
+}
+
+css::uno::Sequence<css::rendering::FontInfo> SAL_CALL
+ PresenterCanvas::queryAvailableFonts(
+ const css::rendering::FontInfo& aFilter,
+ const css::uno::Sequence< css::beans::PropertyValue >& aFontProperties)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->queryAvailableFonts(aFilter, aFontProperties);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::drawText(
+ const css::rendering::StringContext& aText,
+ const css::uno::Reference< css::rendering::XCanvasFont >& xFont,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState,
+ ::sal_Int8 nTextDirection)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->drawText(
+ aText, xFont, MergeViewState(aViewState), aRenderState, nTextDirection);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::drawTextLayout(
+ const css::uno::Reference< css::rendering::XTextLayout >& xLayoutetText,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->drawTextLayout(
+ xLayoutetText, MergeViewState(aViewState), aRenderState);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::drawBitmap(
+ const css::uno::Reference< css::rendering::XBitmap >& xBitmap,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->drawBitmap(
+ xBitmap, MergeViewState(aViewState), aRenderState);
+}
+
+css::uno::Reference<css::rendering::XCachedPrimitive> SAL_CALL
+ PresenterCanvas::drawBitmapModulated(
+ const css::uno::Reference< css::rendering::XBitmap>& xBitmap,
+ const css::rendering::ViewState& aViewState,
+ const css::rendering::RenderState& aRenderState)
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->drawBitmapModulated(
+ xBitmap, MergeViewState(aViewState), aRenderState);
+}
+
+css::uno::Reference<css::rendering::XGraphicDevice> SAL_CALL
+ PresenterCanvas::getDevice()
+{
+ ThrowIfDisposed();
+ return mxSharedCanvas->getDevice();
+}
+
+//----- XSpriteCanvas ---------------------------------------------------------
+
+Reference<rendering::XAnimatedSprite> SAL_CALL
+ PresenterCanvas::createSpriteFromAnimation (
+ const css::uno::Reference<css::rendering::XAnimation>& rAnimation)
+{
+ ThrowIfDisposed();
+
+ Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxSharedCanvas, UNO_QUERY);
+ if (xSpriteCanvas.is())
+ return xSpriteCanvas->createSpriteFromAnimation(rAnimation);
+ else
+ return nullptr;
+}
+
+Reference<rendering::XAnimatedSprite> SAL_CALL
+ PresenterCanvas::createSpriteFromBitmaps (
+ const css::uno::Sequence<
+ css::uno::Reference< css::rendering::XBitmap > >& rAnimationBitmaps,
+ ::sal_Int8 nInterpolationMode)
+{
+ ThrowIfDisposed();
+
+ Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxSharedCanvas, UNO_QUERY);
+ if (xSpriteCanvas.is())
+ return xSpriteCanvas->createSpriteFromBitmaps(rAnimationBitmaps, nInterpolationMode);
+ else
+ return nullptr;
+}
+
+Reference<rendering::XCustomSprite> SAL_CALL
+ PresenterCanvas::createCustomSprite (
+ const css::geometry::RealSize2D& rSpriteSize)
+{
+ ThrowIfDisposed();
+
+ Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxSharedCanvas, UNO_QUERY);
+ if (xSpriteCanvas.is())
+ return new PresenterCustomSprite(
+ this,
+ xSpriteCanvas->createCustomSprite(rSpriteSize),
+ mxSharedWindow);
+ else if (mxUpdateCanvas.is())
+ return new PresenterCustomSprite(
+ this,
+ mxUpdateCanvas->createCustomSprite(rSpriteSize),
+ mxUpdateWindow);
+ else
+ return nullptr;
+}
+
+Reference<rendering::XSprite> SAL_CALL
+ PresenterCanvas::createClonedSprite (
+ const css::uno::Reference< css::rendering::XSprite >& rxOriginal)
+{
+ ThrowIfDisposed();
+
+ Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxSharedCanvas, UNO_QUERY);
+ if (xSpriteCanvas.is())
+ return xSpriteCanvas->createClonedSprite(rxOriginal);
+ if (mxUpdateCanvas.is())
+ return mxUpdateCanvas->createClonedSprite(rxOriginal);
+ return nullptr;
+}
+
+sal_Bool SAL_CALL PresenterCanvas::updateScreen (sal_Bool bUpdateAll)
+{
+ ThrowIfDisposed();
+
+ mbOffsetUpdatePending = true;
+ if (m_pUpdateRequester != nullptr)
+ {
+ m_pUpdateRequester->RequestUpdate(bUpdateAll);
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+}
+
+//----- XEventListener --------------------------------------------------------
+
+void SAL_CALL PresenterCanvas::disposing (const css::lang::EventObject& rEvent)
+{
+ ThrowIfDisposed();
+ if (rEvent.Source == mxWindow)
+ mxWindow = nullptr;
+}
+
+//----- XWindowListener -------------------------------------------------------
+
+void SAL_CALL PresenterCanvas::windowResized (const css::awt::WindowEvent&)
+{
+ ThrowIfDisposed();
+ mbOffsetUpdatePending = true;
+}
+
+void SAL_CALL PresenterCanvas::windowMoved (const css::awt::WindowEvent&)
+{
+ ThrowIfDisposed();
+ mbOffsetUpdatePending = true;
+}
+
+void SAL_CALL PresenterCanvas::windowShown (const css::lang::EventObject&)
+{
+ ThrowIfDisposed();
+ mbOffsetUpdatePending = true;
+}
+
+void SAL_CALL PresenterCanvas::windowHidden (const css::lang::EventObject&)
+{
+ ThrowIfDisposed();
+}
+
+//----- XBitmap ---------------------------------------------------------------
+
+geometry::IntegerSize2D SAL_CALL PresenterCanvas::getSize()
+{
+ ThrowIfDisposed();
+
+ if (mxWindow.is())
+ {
+ const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+ return geometry::IntegerSize2D(aWindowBox.Width, aWindowBox.Height);
+ }
+ else
+ return geometry::IntegerSize2D(0,0);
+}
+
+sal_Bool SAL_CALL PresenterCanvas::hasAlpha()
+{
+ Reference<rendering::XBitmap> xBitmap (mxSharedCanvas, UNO_QUERY);
+ if (xBitmap.is())
+ return xBitmap->hasAlpha();
+ else
+ return false;
+}
+
+Reference<rendering::XBitmap> SAL_CALL PresenterCanvas::getScaledBitmap(
+ const css::geometry::RealSize2D&,
+ sal_Bool)
+{
+ ThrowIfDisposed();
+
+ // Not implemented.
+
+ return nullptr;
+}
+
+rendering::ViewState PresenterCanvas::MergeViewState (
+ const rendering::ViewState& rViewState)
+{
+ // Make sure the offset is up-to-date.
+ if (mbOffsetUpdatePending)
+ maOffset = GetOffset(mxSharedWindow);
+ return MergeViewState(rViewState, maOffset);
+}
+
+css::rendering::ViewState PresenterCanvas::MergeViewState (
+ const css::rendering::ViewState& rViewState,
+ const css::awt::Point& rOffset)
+{
+ // Early rejects.
+ if ( ! mxSharedCanvas.is())
+ return rViewState;
+
+ Reference<rendering::XGraphicDevice> xDevice (mxSharedCanvas->getDevice());
+ if ( ! xDevice.is())
+ return rViewState;
+
+ // Create a modifiable copy of the given view state.
+ rendering::ViewState aViewState (rViewState);
+
+ // Prepare the local clip rectangle.
+ ::basegfx::B2DRectangle aWindowRange (GetClipRectangle(aViewState.AffineTransform, rOffset));
+
+ // Adapt the offset of the view state.
+ aViewState.AffineTransform.m02 += rOffset.X;
+ aViewState.AffineTransform.m12 += rOffset.Y;
+
+ // Adapt the clip polygon.
+ if ( ! aViewState.Clip.is())
+ {
+ // Cancel out the later multiplication with the view state
+ // transformation.
+ aViewState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
+ xDevice,
+ ::basegfx::B2DPolyPolygon(::basegfx::utils::createPolygonFromRect(aWindowRange)));
+ }
+ else
+ {
+ // Have to compute the intersection of the given clipping polygon in
+ // the view state and the local clip rectangle.
+
+ // Clip the view state clipping polygon against the local clip rectangle.
+ const ::basegfx::B2DPolyPolygon aClipPolygon (
+ ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(
+ aViewState.Clip));
+ const ::basegfx::B2DPolyPolygon aClippedClipPolygon (
+ ::basegfx::utils::clipPolyPolygonOnRange(
+ aClipPolygon,
+ aWindowRange,
+ true, /* bInside */
+ false /* bStroke */));
+
+ aViewState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
+ xDevice,
+ aClippedClipPolygon);
+ }
+
+ return aViewState;
+}
+
+awt::Point PresenterCanvas::GetOffset (const Reference<awt::XWindow>& rxBaseWindow)
+{
+ mbOffsetUpdatePending = false;
+ if (mxWindow.is() && rxBaseWindow.is())
+ {
+ VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow(mxWindow);
+ VclPtr<vcl::Window> pSharedWindow = VCLUnoHelper::GetWindow(rxBaseWindow);
+ if (pWindow && pSharedWindow)
+ {
+ ::tools::Rectangle aBox = pWindow->GetWindowExtentsRelative(pSharedWindow);
+
+ // Calculate offset of this canvas with respect to the shared
+ // canvas.
+ return awt::Point(aBox.Left(), aBox.Top());
+ }
+ }
+
+ return awt::Point(0, 0);
+}
+
+::basegfx::B2DRectangle PresenterCanvas::GetClipRectangle (
+ const css::geometry::AffineMatrix2D& rViewTransform,
+ const awt::Point& rOffset)
+{
+ VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow(mxWindow);
+ if (!pWindow)
+ return ::basegfx::B2DRectangle();
+
+ VclPtr<vcl::Window> pSharedWindow = VCLUnoHelper::GetWindow(mxSharedWindow);
+ if (!pSharedWindow)
+ return ::basegfx::B2DRectangle();
+
+ // Get the bounding box of the window and create a range in the
+ // coordinate system of the child window.
+ // Use the window extents.
+ ::tools::Rectangle aLocalClip = pWindow->GetWindowExtentsRelative(pSharedWindow);
+
+ // The local clip rectangle is used to clip the view state clipping
+ // polygon.
+ ::basegfx::B2DRectangle aWindowRectangle (
+ aLocalClip.Left() - rOffset.X,
+ aLocalClip.Top() - rOffset.Y,
+ aLocalClip.Right() - rOffset.X + 1,
+ aLocalClip.Bottom() - rOffset.Y + 1);
+
+ // Calculate the inverted view state transformation to cancel out a
+ // later transformation of the local clip polygon with the view state
+ // transformation.
+ ::basegfx::B2DHomMatrix aInvertedViewStateTransformation;
+ ::basegfx::unotools::homMatrixFromAffineMatrix(
+ aInvertedViewStateTransformation,
+ rViewTransform);
+ if (aInvertedViewStateTransformation.invert())
+ {
+ // Cancel out the later multiplication with the view state
+ // transformation.
+ aWindowRectangle.transform(aInvertedViewStateTransformation);
+ }
+
+ return aWindowRectangle;
+}
+
+Reference<rendering::XPolyPolygon2D> PresenterCanvas::UpdateSpriteClip (
+ const Reference<rendering::XPolyPolygon2D>& rxOriginalClip,
+ const geometry::RealPoint2D& rLocation)
+{
+ // Check used resources and just return the original clip when not
+ // every one of them is available.
+ if ( ! mxWindow.is())
+ return rxOriginalClip;
+
+ Reference<rendering::XGraphicDevice> xDevice (mxSharedCanvas->getDevice());
+ if ( ! xDevice.is())
+ return rxOriginalClip;
+
+ // Determine the bounds of the clip rectangle (the window border) in the
+ // coordinate system of the sprite.
+ const awt::Rectangle aWindowBox (mxWindow->getPosSize());
+ const double nMinX (-rLocation.X);
+ const double nMinY (-rLocation.Y);
+ const double nMaxX (aWindowBox.Width-rLocation.X);
+ const double nMaxY (aWindowBox.Height-rLocation.Y);
+
+ // Create a clip polygon.
+ Reference<rendering::XPolyPolygon2D> xPolygon;
+ if (rxOriginalClip.is())
+ {
+ // Combine the original clip with the window clip.
+ const ::basegfx::B2DPolyPolygon aOriginalClip (
+ ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(rxOriginalClip));
+ ::basegfx::B2DRectangle aWindowRange (nMinX, nMinY, nMaxX, nMaxY);
+ const ::basegfx::B2DPolyPolygon aClippedClipPolygon (
+ ::basegfx::utils::clipPolyPolygonOnRange(
+ aOriginalClip,
+ aWindowRange,
+ true, /* bInside */
+ false /* bStroke */));
+ xPolygon = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
+ xDevice,
+ aClippedClipPolygon);
+ }
+ else
+ {
+ // Create a new clip polygon from the window clip rectangle.
+ Sequence<Sequence<geometry::RealPoint2D> > aPoints
+ {
+ {
+ { nMinX,nMinY },
+ { nMaxX,nMinY },
+ { nMaxX,nMaxY },
+ { nMinX,nMaxY }
+ }
+ };
+ Reference<rendering::XLinePolyPolygon2D> xLinePolygon(
+ xDevice->createCompatibleLinePolyPolygon(aPoints));
+ if (xLinePolygon.is())
+ xLinePolygon->setClosed(0, true);
+ xPolygon = xLinePolygon;
+ }
+
+ return xPolygon;
+}
+
+void PresenterCanvas::ThrowIfDisposed()
+{
+ if (m_bDisposed || ! mxSharedCanvas.is())
+ {
+ throw lang::DisposedException ("PresenterCanvas object has already been disposed",
+ static_cast<uno::XWeak*>(this));
+ }
+}
+
+//===== PresenterCustomSprite =================================================
+
+PresenterCustomSprite::PresenterCustomSprite (
+ const rtl::Reference<PresenterCanvas>& rpCanvas,
+ const Reference<rendering::XCustomSprite>& rxSprite,
+ const Reference<awt::XWindow>& rxBaseWindow)
+ : mpCanvas(rpCanvas),
+ mxSprite(rxSprite),
+ mxBaseWindow(rxBaseWindow),
+ maPosition(0,0)
+{
+}
+
+void PresenterCustomSprite::disposing(std::unique_lock<std::mutex>&)
+{
+ Reference<XComponent> xComponent (mxSprite, UNO_QUERY);
+ mxSprite = nullptr;
+ if (xComponent.is())
+ xComponent->dispose();
+ mpCanvas.clear();
+}
+
+//----- XSprite ---------------------------------------------------------------
+
+void SAL_CALL PresenterCustomSprite::setAlpha (const double nAlpha)
+{
+ ThrowIfDisposed();
+ mxSprite->setAlpha(nAlpha);
+}
+
+void SAL_CALL PresenterCustomSprite::move (
+ const geometry::RealPoint2D& rNewPos,
+ const rendering::ViewState& rViewState,
+ const rendering::RenderState& rRenderState)
+{
+ ThrowIfDisposed();
+ maPosition = rNewPos;
+ mxSprite->move(
+ rNewPos,
+ mpCanvas->MergeViewState(rViewState, mpCanvas->GetOffset(mxBaseWindow)),
+ rRenderState);
+ // Clip sprite against window bounds. This call is necessary because
+ // sprite clipping is done in the coordinate system of the sprite.
+ // Therefore, after each change of the sprites location the window
+ // bounds have to be transformed into the sprites coordinate system.
+ clip(nullptr);
+}
+
+void SAL_CALL PresenterCustomSprite::transform (const geometry::AffineMatrix2D& rTransformation)
+{
+ ThrowIfDisposed();
+ mxSprite->transform(rTransformation);
+}
+
+void SAL_CALL PresenterCustomSprite::clip (const Reference<rendering::XPolyPolygon2D>& rxClip)
+{
+ ThrowIfDisposed();
+ // The clip region is expected in the coordinate system of the sprite.
+ // UpdateSpriteClip() integrates the window bounds, transformed into the
+ // sprites coordinate system, with the given clip.
+ mxSprite->clip(mpCanvas->UpdateSpriteClip(rxClip, maPosition));
+}
+
+void SAL_CALL PresenterCustomSprite::setPriority (const double nPriority)
+{
+ ThrowIfDisposed();
+ mxSprite->setPriority(nPriority);
+}
+
+void SAL_CALL PresenterCustomSprite::show()
+{
+ ThrowIfDisposed();
+ mxSprite->show();
+}
+
+void SAL_CALL PresenterCustomSprite::hide()
+{
+ ThrowIfDisposed();
+ mxSprite->hide();
+}
+
+//----- XCustomSprite ---------------------------------------------------------
+
+Reference<rendering::XCanvas> PresenterCustomSprite::getContentCanvas()
+{
+ ThrowIfDisposed();
+ return mxSprite->getContentCanvas();
+}
+
+void PresenterCustomSprite::ThrowIfDisposed()
+{
+ if (m_bDisposed || ! mxSprite.is())
+ {
+ throw lang::DisposedException ("PresenterCustomSprite object has already been disposed",
+ static_cast<uno::XWeak*>(this));
+ }
+}
+
+} // end of namespace ::sd::presenter
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */