1 files changed, 343 insertions, 0 deletions
diff --git a/svx/source/svdraw/sdrpaintwindow.cxx b/svx/source/svdraw/sdrpaintwindow.cxx
new file mode 100644
index 000000000..f4561275b
--- /dev/null
+++ b/svx/source/svdraw/sdrpaintwindow.cxx
@@ -0,0 +1,343 @@
+/* -*- 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 <comphelper/lok.hxx>
+#include <svx/sdrpaintwindow.hxx>
+#include <sdr/overlay/overlaymanagerbuffered.hxx>
+#include <svx/svdpntv.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/settings.hxx>
+#include <set>
+#include <vector>
+
+namespace {
+
+//rhbz#1007697 do this in two loops, one to collect the candidates
+//and another to update them because updating a candidate can
+//trigger the candidate to be deleted, so asking for its
+//sibling after that is going to fail hard
+class CandidateMgr
+{
+    std::vector<VclPtr<vcl::Window> > m_aCandidates;
+    std::set<VclPtr<vcl::Window> > m_aDeletedCandidates;
+    DECL_LINK(WindowEventListener, VclWindowEvent&, void);
+public:
+    void PaintTransparentChildren(vcl::Window const & rWindow, tools::Rectangle const& rPixelRect);
+    ~CandidateMgr();
+};
+
+}
+
+IMPL_LINK(CandidateMgr, WindowEventListener, VclWindowEvent&, rEvent, void)
+{
+    vcl::Window* pWindow = rEvent.GetWindow();
+    if (rEvent.GetId() == VclEventId::ObjectDying)
+    {
+        m_aDeletedCandidates.insert(pWindow);
+    }
+}
+
+CandidateMgr::~CandidateMgr()
+{
+    for (VclPtr<vcl::Window>& pCandidate : m_aCandidates)
+    {
+        if (m_aDeletedCandidates.find(pCandidate) != m_aDeletedCandidates.end())
+            continue;
+        pCandidate->RemoveEventListener(LINK(this, CandidateMgr, WindowEventListener));
+    }
+}
+
+void PaintTransparentChildren(vcl::Window const & rWindow, tools::Rectangle const& rPixelRect)
+{
+    if (!rWindow.IsChildTransparentModeEnabled())
+        return;
+
+    CandidateMgr aManager;
+    aManager.PaintTransparentChildren(rWindow, rPixelRect);
+}
+
+void CandidateMgr::PaintTransparentChildren(vcl::Window const & rWindow, tools::Rectangle const& rPixelRect)
+{
+    vcl::Window * pCandidate = rWindow.GetWindow( GetWindowType::FirstChild );
+    while (pCandidate)
+    {
+        if (pCandidate->IsPaintTransparent())
+        {
+            const tools::Rectangle aCandidatePosSizePixel(
+                            pCandidate->GetPosPixel(),
+                            pCandidate->GetSizePixel());
+
+            if (aCandidatePosSizePixel.IsOver(rPixelRect))
+            {
+                m_aCandidates.emplace_back(pCandidate);
+                pCandidate->AddEventListener(LINK(this, CandidateMgr, WindowEventListener));
+            }
+        }
+        pCandidate = pCandidate->GetWindow( GetWindowType::Next );
+    }
+
+    for (const auto& rpCandidate : m_aCandidates)
+    {
+        pCandidate = rpCandidate.get();
+        if (m_aDeletedCandidates.find(pCandidate) != m_aDeletedCandidates.end())
+            continue;
+        //rhbz#1007697 this can cause the window itself to be
+        //deleted. So we are listening to see if that happens
+        //and if so, then skip the update
+        pCandidate->Invalidate(InvalidateFlags::NoTransparent|InvalidateFlags::Children);
+        // important: actually paint the child here!
+        if (m_aDeletedCandidates.find(pCandidate) != m_aDeletedCandidates.end())
+            continue;
+        pCandidate->PaintImmediately();
+    }
+}
+
+SdrPreRenderDevice::SdrPreRenderDevice(OutputDevice& rOriginal)
+:   mpOutputDevice(&rOriginal),
+    mpPreRenderDevice(VclPtr<VirtualDevice>::Create())
+{
+}
+
+SdrPreRenderDevice::~SdrPreRenderDevice()
+{
+    mpPreRenderDevice.disposeAndClear();
+}
+
+void SdrPreRenderDevice::PreparePreRenderDevice()
+{
+    // compare size of mpPreRenderDevice with size of visible area
+    if(mpPreRenderDevice->GetOutputSizePixel() != mpOutputDevice->GetOutputSizePixel())
+    {
+        mpPreRenderDevice->SetOutputSizePixel(mpOutputDevice->GetOutputSizePixel());
+    }
+
+    // Also compare the MapModes for zoom/scroll changes
+    if(mpPreRenderDevice->GetMapMode() != mpOutputDevice->GetMapMode())
+    {
+        mpPreRenderDevice->SetMapMode(mpOutputDevice->GetMapMode());
+    }
+
+    // #i29186#
+    mpPreRenderDevice->SetDrawMode(mpOutputDevice->GetDrawMode());
+    mpPreRenderDevice->SetSettings(mpOutputDevice->GetSettings());
+}
+
+void SdrPreRenderDevice::OutputPreRenderDevice(const vcl::Region& rExpandedRegion)
+{
+    // region to pixels
+    const vcl::Region aRegionPixel(mpOutputDevice->LogicToPixel(rExpandedRegion));
+    //RegionHandle aRegionHandle(aRegionPixel.BeginEnumRects());
+    //Rectangle aRegionRectanglePixel;
+
+    // MapModes off
+    bool bMapModeWasEnabledDest(mpOutputDevice->IsMapModeEnabled());
+    bool bMapModeWasEnabledSource(mpPreRenderDevice->IsMapModeEnabled());
+    mpOutputDevice->EnableMapMode(false);
+    mpPreRenderDevice->EnableMapMode(false);
+
+    RectangleVector aRectangles;
+    aRegionPixel.GetRegionRectangles(aRectangles);
+
+    for(const auto& rRect : aRectangles)
+    {
+        // for each rectangle, copy the area
+        const Point aTopLeft(rRect.TopLeft());
+        const Size aSize(rRect.GetSize());
+
+        mpOutputDevice->DrawOutDev(
+            aTopLeft, aSize,
+            aTopLeft, aSize,
+            *mpPreRenderDevice);
+    }
+
+    mpOutputDevice->EnableMapMode(bMapModeWasEnabledDest);
+    mpPreRenderDevice->EnableMapMode(bMapModeWasEnabledSource);
+}
+
+void SdrPaintView::InitOverlayManager(rtl::Reference<sdr::overlay::OverlayManager> xOverlayManager) const
+{
+    Color aColA(getOptionsDrawinglayer().GetStripeColorA());
+    Color aColB(getOptionsDrawinglayer().GetStripeColorB());
+
+    if (Application::GetSettings().GetStyleSettings().GetHighContrastMode())
+    {
+        aColA = aColB = Application::GetSettings().GetStyleSettings().GetHighlightColor();
+        aColB.Invert();
+    }
+
+    xOverlayManager->setStripeColorA(aColA);
+    xOverlayManager->setStripeColorB(aColB);
+    xOverlayManager->setStripeLengthPixel(getOptionsDrawinglayer().GetStripeLength());
+}
+
+rtl::Reference<sdr::overlay::OverlayManager> SdrPaintView::CreateOverlayManager(OutputDevice& rOutputDevice) const
+{
+    rtl::Reference<sdr::overlay::OverlayManager> xOverlayManager;
+    // is it a window?
+    if (OUTDEV_WINDOW == rOutputDevice.GetOutDevType())
+    {
+        vcl::Window& rWindow = dynamic_cast<vcl::Window&>(rOutputDevice);
+        // decide which OverlayManager to use
+        if (IsBufferedOverlayAllowed() && !rWindow.SupportsDoubleBuffering())
+        {
+            // buffered OverlayManager, buffers its background and refreshes from there
+            // for pure overlay changes (no system redraw). The 3rd parameter specifies
+            // whether that refresh itself will use a 2nd vdev to avoid flickering.
+            // Also hand over the old OverlayManager if existent; this means to take over
+            // the registered OverlayObjects from it
+            xOverlayManager = sdr::overlay::OverlayManagerBuffered::create(rOutputDevice);
+        }
+        else
+        {
+            // unbuffered OverlayManager, just invalidates places where changes
+            // take place
+            // Also hand over the old OverlayManager if existent; this means to take over
+            // the registered OverlayObjects from it
+            xOverlayManager = sdr::overlay::OverlayManager::create(rOutputDevice);
+        }
+
+        OSL_ENSURE(xOverlayManager.is(), "SdrPaintWindow::SdrPaintWindow: Could not allocate an overlayManager (!)");
+
+        // Request a repaint so that the buffered overlay manager fills
+        // its buffer properly.  This is a workaround for missing buffer
+        // updates.
+        if (!comphelper::LibreOfficeKit::isActive())
+        {
+            rWindow.Invalidate();
+        }
+
+        InitOverlayManager(xOverlayManager);
+    }
+    return xOverlayManager;
+}
+
+void SdrPaintWindow::impCreateOverlayManager()
+{
+    // not yet one created?
+    if(!mxOverlayManager.is())
+        mxOverlayManager = mrPaintView.CreateOverlayManager(GetOutputDevice());
+}
+
+SdrPaintWindow::SdrPaintWindow(SdrPaintView& rNewPaintView, OutputDevice& rOut, vcl::Window* pWindow)
+:   mpOutputDevice(&rOut),
+    mpWindow(pWindow),
+    mrPaintView(rNewPaintView),
+    mbTemporaryTarget(false), // #i72889#
+    mbOutputToWindow(OUTDEV_WINDOW == mpOutputDevice->GetOutDevType()),
+    mpPatched(nullptr)
+{
+}
+
+SdrPaintWindow::~SdrPaintWindow()
+{
+    mxOverlayManager.clear();
+
+    DestroyPreRenderDevice();
+}
+
+rtl::Reference< sdr::overlay::OverlayManager > const & SdrPaintWindow::GetOverlayManager() const
+{
+    if(!mxOverlayManager.is())
+    {
+        // Create buffered overlay manager by default.
+        const_cast< SdrPaintWindow* >(this)->impCreateOverlayManager();
+    }
+
+    return mxOverlayManager;
+}
+
+tools::Rectangle SdrPaintWindow::GetVisibleArea() const
+{
+    Size aVisSizePixel(GetOutputDevice().GetOutputSizePixel());
+    return GetOutputDevice().PixelToLogic(tools::Rectangle(Point(0,0), aVisSizePixel));
+}
+
+bool SdrPaintWindow::OutputToRecordingMetaFile() const
+{
+    GDIMetaFile* pMetaFile = mpOutputDevice->GetConnectMetaFile();
+    return (pMetaFile && pMetaFile->IsRecord() && !pMetaFile->IsPause());
+}
+
+void SdrPaintWindow::PreparePreRenderDevice()
+{
+    const bool bPrepareBufferedOutput(
+        mrPaintView.IsBufferedOutputAllowed()
+        && !OutputToPrinter()
+        && !mpOutputDevice->IsVirtual()
+        && !OutputToRecordingMetaFile());
+
+    if(bPrepareBufferedOutput)
+    {
+        if(!mpPreRenderDevice)
+        {
+            mpPreRenderDevice.reset(new SdrPreRenderDevice(*mpOutputDevice));
+        }
+    }
+    else
+    {
+        DestroyPreRenderDevice();
+    }
+
+    if(mpPreRenderDevice)
+    {
+        mpPreRenderDevice->PreparePreRenderDevice();
+    }
+}
+
+void SdrPaintWindow::DestroyPreRenderDevice()
+{
+    mpPreRenderDevice.reset();
+}
+
+void SdrPaintWindow::OutputPreRenderDevice(const vcl::Region& rExpandedRegion)
+{
+    if(mpPreRenderDevice)
+    {
+        mpPreRenderDevice->OutputPreRenderDevice(rExpandedRegion);
+    }
+}
+
+// #i73602# add flag if buffer shall be used
+void SdrPaintWindow::DrawOverlay(const vcl::Region& rRegion)
+{
+    // ## force creation of OverlayManager since the first repaint needs to
+    // save the background to get a controlled start into overlay mechanism
+    impCreateOverlayManager();
+
+    if(mxOverlayManager.is() && !OutputToPrinter())
+    {
+        if(mpPreRenderDevice)
+        {
+            mxOverlayManager->completeRedraw(rRegion, &mpPreRenderDevice->GetPreRenderDevice());
+        }
+        else
+        {
+            mxOverlayManager->completeRedraw(rRegion);
+        }
+    }
+}
+
+
+void SdrPaintWindow::SetRedrawRegion(const vcl::Region& rNew)
+{
+    maRedrawRegion = rNew;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */