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Diffstat (limited to 'svx/source/sdr/overlay/overlaymanagerbuffered.cxx')
| -rw-r--r-- | svx/source/sdr/overlay/overlaymanagerbuffered.cxx | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/svx/source/sdr/overlay/overlaymanagerbuffered.cxx b/svx/source/sdr/overlay/overlaymanagerbuffered.cxx new file mode 100644 index 000000000..ae37c2ce4 --- /dev/null +++ b/svx/source/sdr/overlay/overlaymanagerbuffered.cxx @@ -0,0 +1,441 @@ +/* -*- 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 <sdr/overlay/overlaymanagerbuffered.hxx> +#include <svx/sdrpaintwindow.hxx> +#include <vcl/outdev.hxx> +#include <basegfx/range/b2drange.hxx> +#include <vcl/window.hxx> +#include <tools/fract.hxx> +#include <vcl/cursor.hxx> +#include <svtools/optionsdrawinglayer.hxx> + + +namespace sdr::overlay +{ + void OverlayManagerBuffered::ImpPrepareBufferDevice() + { + // compare size of mpBufferDevice with size of visible area + if(mpBufferDevice->GetOutputSizePixel() != getOutputDevice().GetOutputSizePixel()) + { + // set new buffer size, copy as much content as possible (use bool parameter for vcl). + // Newly uncovered regions will be repainted. + mpBufferDevice->SetOutputSizePixel(getOutputDevice().GetOutputSizePixel(), false); + } + + // compare the MapModes for zoom/scroll changes + if(mpBufferDevice->GetMapMode() != getOutputDevice().GetMapMode()) + { + const bool bZoomed( + mpBufferDevice->GetMapMode().GetScaleX() != getOutputDevice().GetMapMode().GetScaleX() + || mpBufferDevice->GetMapMode().GetScaleY() != getOutputDevice().GetMapMode().GetScaleY()); + + if(!bZoomed) + { + const Point& rOriginOld = mpBufferDevice->GetMapMode().GetOrigin(); + const Point& rOriginNew = getOutputDevice().GetMapMode().GetOrigin(); + const bool bScrolled(rOriginOld != rOriginNew); + + + if(bScrolled) + { + // get pixel bounds (tdf#149322 do subtraction in logic units before converting result back to pixel) + const Point aLogicOriginDiff(rOriginNew - rOriginOld); + const Size aPixelOriginDiff(mpBufferDevice->LogicToPixel(Size(aLogicOriginDiff.X(), aLogicOriginDiff.Y()))); + const Point aDestinationOffsetPixel(aPixelOriginDiff.Width(), aPixelOriginDiff.Height()); + const Size aOutputSizePixel(mpBufferDevice->GetOutputSizePixel()); + + // remember and switch off MapMode + const bool bMapModeWasEnabled(mpBufferDevice->IsMapModeEnabled()); + mpBufferDevice->EnableMapMode(false); + + // scroll internally buffered stuff + mpBufferDevice->DrawOutDev( + aDestinationOffsetPixel, aOutputSizePixel, // destination + Point(), aOutputSizePixel); // source + + // restore MapMode + mpBufferDevice->EnableMapMode(bMapModeWasEnabled); + + // scroll remembered region, too. + if(!maBufferRememberedRangePixel.isEmpty()) + { + const basegfx::B2IPoint aIPointDestinationOffsetPixel(aDestinationOffsetPixel.X(), aDestinationOffsetPixel.Y()); + const basegfx::B2IPoint aNewMinimum(maBufferRememberedRangePixel.getMinimum() + aIPointDestinationOffsetPixel); + const basegfx::B2IPoint aNewMaximum(maBufferRememberedRangePixel.getMaximum() + aIPointDestinationOffsetPixel); + maBufferRememberedRangePixel = basegfx::B2IRange(aNewMinimum, aNewMaximum); + } + } + } + + // copy new MapMode + mpBufferDevice->SetMapMode(getOutputDevice().GetMapMode()); + } + + // #i29186# + mpBufferDevice->SetDrawMode(getOutputDevice().GetDrawMode()); + mpBufferDevice->SetSettings(getOutputDevice().GetSettings()); + mpBufferDevice->SetAntialiasing(getOutputDevice().GetAntialiasing()); + } + + void OverlayManagerBuffered::ImpRestoreBackground() const + { + const tools::Rectangle aRegionRectanglePixel( + maBufferRememberedRangePixel.getMinX(), maBufferRememberedRangePixel.getMinY(), + maBufferRememberedRangePixel.getMaxX(), maBufferRememberedRangePixel.getMaxY()); + const vcl::Region aRegionPixel(aRegionRectanglePixel); + + ImpRestoreBackground(aRegionPixel); + } + + void OverlayManagerBuffered::ImpRestoreBackground(const vcl::Region& rRegionPixel) const + { + // MapModes off + const bool bMapModeWasEnabledDest(getOutputDevice().IsMapModeEnabled()); + const bool bMapModeWasEnabledSource(mpBufferDevice->IsMapModeEnabled()); + getOutputDevice().EnableMapMode(false); + const_cast<OverlayManagerBuffered*>(this)->mpBufferDevice->EnableMapMode(false); + + // local region + RectangleVector aRectangles; + rRegionPixel.GetRegionRectangles(aRectangles); + + for(const auto& rRect : aRectangles) + { + // restore the area + const Point aTopLeft(rRect.TopLeft()); + const Size aSize(rRect.GetSize()); + + getOutputDevice().DrawOutDev( + aTopLeft, aSize, // destination + aTopLeft, aSize, // source + *mpBufferDevice); + } + + // restore MapModes + getOutputDevice().EnableMapMode(bMapModeWasEnabledDest); + const_cast<OverlayManagerBuffered*>(this)->mpBufferDevice->EnableMapMode(bMapModeWasEnabledSource); + } + + void OverlayManagerBuffered::ImpSaveBackground(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice) + { + // prepare source + OutputDevice& rSource = pPreRenderDevice ? *pPreRenderDevice : getOutputDevice(); + + // Ensure buffer is valid + ImpPrepareBufferDevice(); + + // build region which needs to be copied + vcl::Region aRegion(rSource.LogicToPixel(rRegion)); + + // limit to PaintRegion if it's a window. This will be evtl. the expanded one, + // but always the exact redraw area + if(OUTDEV_WINDOW == rSource.GetOutDevType()) + { + vcl::Window& rWindow = *rSource.GetOwnerWindow(); + vcl::Region aPaintRegionPixel = rWindow.LogicToPixel(rWindow.GetPaintRegion()); + aRegion.Intersect(aPaintRegionPixel); + + // #i72754# Make sure content is completely rendered, the window + // will be used as source of a DrawOutDev soon + rWindow.GetOutDev()->Flush(); + } + + // also limit to buffer size + const tools::Rectangle aBufferDeviceRectanglePixel(Point(), mpBufferDevice->GetOutputSizePixel()); + aRegion.Intersect(aBufferDeviceRectanglePixel); + + // MapModes off + const bool bMapModeWasEnabledDest(rSource.IsMapModeEnabled()); + const bool bMapModeWasEnabledSource(mpBufferDevice->IsMapModeEnabled()); + rSource.EnableMapMode(false); + mpBufferDevice->EnableMapMode(false); + + // prepare to iterate over the rectangles from the region in pixels + RectangleVector aRectangles; + aRegion.GetRegionRectangles(aRectangles); + + for(const auto& rRect : aRectangles) + { + // for each rectangle, save the area + const Point aTopLeft(rRect.TopLeft()); + const Size aSize(rRect.GetSize()); + + mpBufferDevice->DrawOutDev( + aTopLeft, aSize, // destination + aTopLeft, aSize, // source + rSource); + } + + // restore MapModes + rSource.EnableMapMode(bMapModeWasEnabledDest); + mpBufferDevice->EnableMapMode(bMapModeWasEnabledSource); + } + + IMPL_LINK_NOARG(OverlayManagerBuffered, ImpBufferTimerHandler, Timer*, void) + { + //Resolves: fdo#46728 ensure this exists until end of scope + rtl::Reference<OverlayManager> xKeepAlive(this); + + // stop timer + maBufferIdle.Stop(); + + if(maBufferRememberedRangePixel.isEmpty()) + return; + + // logic size for impDrawMember call + basegfx::B2DRange aBufferRememberedRangeLogic( + maBufferRememberedRangePixel.getMinX(), maBufferRememberedRangePixel.getMinY(), + maBufferRememberedRangePixel.getMaxX(), maBufferRememberedRangePixel.getMaxY()); + aBufferRememberedRangeLogic.transform(getOutputDevice().GetInverseViewTransformation()); + + // prepare cursor handling + const bool bTargetIsWindow(OUTDEV_WINDOW == mrOutputDevice.GetOutDevType()); + bool bCursorWasEnabled(false); + + // #i80730# switch off VCL cursor during overlay refresh + if(bTargetIsWindow) + { + vcl::Window& rWindow = *mrOutputDevice.GetOwnerWindow(); + vcl::Cursor* pCursor = rWindow.GetCursor(); + + if(pCursor && pCursor->IsVisible()) + { + pCursor->Hide(); + bCursorWasEnabled = true; + } + } + + // refresh with prerendering + { + // #i73602# ensure valid and sized mpOutputBufferDevice + const Size aDestinationSizePixel(mpBufferDevice->GetOutputSizePixel()); + const Size aOutputBufferSizePixel(mpOutputBufferDevice->GetOutputSizePixel()); + + if(aDestinationSizePixel != aOutputBufferSizePixel) + { + mpOutputBufferDevice->SetOutputSizePixel(aDestinationSizePixel); + } + + mpOutputBufferDevice->SetMapMode(getOutputDevice().GetMapMode()); + mpOutputBufferDevice->EnableMapMode(false); + mpOutputBufferDevice->SetDrawMode(mpBufferDevice->GetDrawMode()); + mpOutputBufferDevice->SetSettings(mpBufferDevice->GetSettings()); + mpOutputBufferDevice->SetAntialiasing(mpBufferDevice->GetAntialiasing()); + + // calculate sizes + tools::Rectangle aRegionRectanglePixel( + maBufferRememberedRangePixel.getMinX(), maBufferRememberedRangePixel.getMinY(), + maBufferRememberedRangePixel.getMaxX(), maBufferRememberedRangePixel.getMaxY()); + + // truncate aRegionRectanglePixel to destination pixel size, more does + // not need to be prepared since destination is a buffer for a window. So, + // maximum size indirectly shall be limited to getOutputDevice().GetOutputSizePixel() + if(aRegionRectanglePixel.Left() < 0) + { + aRegionRectanglePixel.SetLeft( 0 ); + } + + if(aRegionRectanglePixel.Top() < 0) + { + aRegionRectanglePixel.SetTop( 0 ); + } + + if(aRegionRectanglePixel.Right() > aDestinationSizePixel.getWidth()) + { + aRegionRectanglePixel.SetRight( aDestinationSizePixel.getWidth() ); + } + + if(aRegionRectanglePixel.Bottom() > aDestinationSizePixel.getHeight()) + { + aRegionRectanglePixel.SetBottom( aDestinationSizePixel.getHeight() ); + } + + // get sizes + const Point aTopLeft(aRegionRectanglePixel.TopLeft()); + const Size aSize(aRegionRectanglePixel.GetSize()); + + { + const bool bMapModeWasEnabledDest(mpBufferDevice->IsMapModeEnabled()); + mpBufferDevice->EnableMapMode(false); + + mpOutputBufferDevice->DrawOutDev( + aTopLeft, aSize, // destination + aTopLeft, aSize, // source + *mpBufferDevice); + + // restore MapModes + mpBufferDevice->EnableMapMode(bMapModeWasEnabledDest); + } + + // paint overlay content for remembered region, use + // method from base class directly + mpOutputBufferDevice->EnableMapMode(); + OverlayManager::ImpDrawMembers(aBufferRememberedRangeLogic, *mpOutputBufferDevice); + mpOutputBufferDevice->EnableMapMode(false); + + // copy to output + { + const bool bMapModeWasEnabledDest(getOutputDevice().IsMapModeEnabled()); + getOutputDevice().EnableMapMode(false); + + getOutputDevice().DrawOutDev( + aTopLeft, aSize, // destination + aTopLeft, aSize, // source + *mpOutputBufferDevice); + + // debug + /*getOutputDevice().SetLineCOL_RED); + getOutputDevice().SetFillColor(); + getOutputDevice().DrawRect(Rectangle(aTopLeft, aSize));*/ + + // restore MapModes + getOutputDevice().EnableMapMode(bMapModeWasEnabledDest); + } + } + + // VCL hack for transparent child windows + // Problem is e.g. a radiobutton form control in life mode. The used window + // is a transparence vcl childwindow. This flag only allows the parent window to + // paint into the child windows area, but there is no mechanism which takes + // care for a repaint of the child window. A transparent child window is NOT + // a window which always keeps it's content consistent over the parent, but it's + // more like just a paint flag for the parent. + // To get the update, the windows in question are updated manually here. + if(bTargetIsWindow) + { + vcl::Window& rWindow = *mrOutputDevice.GetOwnerWindow(); + + const tools::Rectangle aRegionRectanglePixel( + maBufferRememberedRangePixel.getMinX(), + maBufferRememberedRangePixel.getMinY(), + maBufferRememberedRangePixel.getMaxX(), + maBufferRememberedRangePixel.getMaxY()); + PaintTransparentChildren(rWindow, aRegionRectanglePixel); + } + + // #i80730# restore visibility of VCL cursor + if(bCursorWasEnabled) + { + vcl::Window& rWindow = *mrOutputDevice.GetOwnerWindow(); + vcl::Cursor* pCursor = rWindow.GetCursor(); + + if(pCursor) + { + // check if cursor still exists. It may have been deleted from someone + pCursor->Show(); + } + } + + // forget remembered Region + maBufferRememberedRangePixel.reset(); + } + + OverlayManagerBuffered::OverlayManagerBuffered( + OutputDevice& rOutputDevice) + : OverlayManager(rOutputDevice), + mpBufferDevice(VclPtr<VirtualDevice>::Create()), + mpOutputBufferDevice(VclPtr<VirtualDevice>::Create()), + maBufferIdle( "sdr::overlay::OverlayManagerBuffered maBufferIdle" ) + { + // Init timer + maBufferIdle.SetPriority( TaskPriority::POST_PAINT ); + maBufferIdle.SetInvokeHandler(LINK(this, OverlayManagerBuffered, ImpBufferTimerHandler)); + } + + rtl::Reference<OverlayManager> OverlayManagerBuffered::create( + OutputDevice& rOutputDevice) + { + return rtl::Reference<OverlayManager>(new OverlayManagerBuffered(rOutputDevice)); + } + + OverlayManagerBuffered::~OverlayManagerBuffered() + { + // Clear timer + maBufferIdle.Stop(); + + if(!maBufferRememberedRangePixel.isEmpty()) + { + // Restore all rectangles for remembered region from buffer + ImpRestoreBackground(); + } + } + + void OverlayManagerBuffered::completeRedraw(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice) const + { + if(!rRegion.IsEmpty()) + { + // save new background + const_cast<OverlayManagerBuffered*>(this)->ImpSaveBackground(rRegion, pPreRenderDevice); + } + + // call parent + OverlayManager::completeRedraw(rRegion, pPreRenderDevice); + } + + void OverlayManagerBuffered::flush() + { + // call timer handler direct + ImpBufferTimerHandler(nullptr); + } + + void OverlayManagerBuffered::invalidateRange(const basegfx::B2DRange& rRange) + { + if(rRange.isEmpty()) + return; + + // buffered output, do not invalidate but use the timer + // to trigger a timer event for refresh + maBufferIdle.Start(); + + // add the discrete range to the remembered region + // #i75163# use double precision and floor/ceil rounding to get overlapped pixel region, even + // when the given logic region has a width/height of 0.0. This does NOT work with LogicToPixel + // since it just transforms the top left and bottom right points equally without taking + // discrete pixel coverage into account. An empty B2DRange and thus empty logic Rectangle translated + // to an also empty discrete pixel rectangle - what is wrong. + basegfx::B2DRange aDiscreteRange(rRange); + aDiscreteRange.transform(getOutputDevice().GetViewTransformation()); + + if(SvtOptionsDrawinglayer::IsAntiAliasing()) + { + // assume AA needs one pixel more and invalidate one pixel more + const double fDiscreteOne(getDiscreteOne()); + const basegfx::B2IPoint aTopLeft( + static_cast<sal_Int32>(floor(aDiscreteRange.getMinX() - fDiscreteOne)), + static_cast<sal_Int32>(floor(aDiscreteRange.getMinY() - fDiscreteOne))); + const basegfx::B2IPoint aBottomRight( + static_cast<sal_Int32>(ceil(aDiscreteRange.getMaxX() + fDiscreteOne)), + static_cast<sal_Int32>(ceil(aDiscreteRange.getMaxY() + fDiscreteOne))); + + maBufferRememberedRangePixel.expand(aTopLeft); + maBufferRememberedRangePixel.expand(aBottomRight); + } + else + { + const basegfx::B2IPoint aTopLeft(static_cast<sal_Int32>(floor(aDiscreteRange.getMinX())), static_cast<sal_Int32>(floor(aDiscreteRange.getMinY()))); + const basegfx::B2IPoint aBottomRight(static_cast<sal_Int32>(ceil(aDiscreteRange.getMaxX())), static_cast<sal_Int32>(ceil(aDiscreteRange.getMaxY()))); + + maBufferRememberedRangePixel.expand(aTopLeft); + maBufferRememberedRangePixel.expand(aBottomRight); + } + } +} // end of namespace + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |