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440 | /* -*- 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>
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
const Point aOriginOldPixel(mpBufferDevice->LogicToPixel(rOriginOld));
const Point aOriginNewPixel(mpBufferDevice->LogicToPixel(rOriginNew));
const Size aOutputSizePixel(mpBufferDevice->GetOutputSizePixel());
// remember and switch off MapMode
const bool bMapModeWasEnabled(mpBufferDevice->IsMapModeEnabled());
mpBufferDevice->EnableMapMode(false);
// scroll internally buffered stuff
const Point aDestinationOffsetPixel(aOriginNewPixel - aOriginOldPixel);
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 = static_cast<vcl::Window&>(rSource);
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.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)<--- syntax error
{
//Resolves: fdo#46728 ensure this exists until end of scope
rtl::Reference<OverlayManager> xKeepAlive(this);
// stop timer
maBufferIdle.Stop();
if(!maBufferRememberedRangePixel.isEmpty())
{
// 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 = static_cast< vcl::Window& >(mrOutputDevice);
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 = static_cast< vcl::Window& >(mrOutputDevice);
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 = static_cast< vcl::Window& >(mrOutputDevice);
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 Idle")
{
// Init timer
maBufferIdle.SetPriority( TaskPriority::POST_PAINT );
maBufferIdle.SetInvokeHandler(LINK(this, OverlayManagerBuffered, ImpBufferTimerHandler));
maBufferIdle.SetDebugName( "sdr::overlay::OverlayManagerBuffered maBufferIdle" );
}
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())
{
// 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(maDrawinglayerOpt.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: */
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