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Diffstat (limited to '')
| -rw-r--r-- | vcl/source/window/cursor.cxx | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/vcl/source/window/cursor.cxx b/vcl/source/window/cursor.cxx new file mode 100644 index 000000000..406491ed1 --- /dev/null +++ b/vcl/source/window/cursor.cxx @@ -0,0 +1,485 @@ +/* -*- 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 <memory> + +#include <comphelper/lok.hxx> +#include <vcl/svapp.hxx> +#include <vcl/timer.hxx> +#include <vcl/settings.hxx> +#include <vcl/window.hxx> +#include <vcl/cursor.hxx> + +#include <window.h> + +#include <tools/poly.hxx> + +struct ImplCursorData +{ + AutoTimer maTimer { "vcl ImplCursorData maTimer" }; // Timer + Point maPixPos; // Pixel-Position + Point maPixRotOff; // Pixel-Offset-Position + Size maPixSize; // Pixel-Size + Degree10 mnOrientation; // Pixel-Orientation + CursorDirection mnDirection; // indicates writing direction + sal_uInt16 mnStyle; // Cursor-Style + bool mbCurVisible; // Is cursor currently visible + VclPtr<vcl::Window> mpWindow; // assigned window +}; + +namespace +{ +const char* pDisableCursorIndicator(getenv("SAL_DISABLE_CURSOR_INDICATOR")); +bool bDisableCursorIndicator(nullptr != pDisableCursorIndicator); +} + +static tools::Rectangle ImplCursorInvert(vcl::RenderContext* pRenderContext, ImplCursorData const * pData) +{ + tools::Rectangle aPaintRect; + + bool bMapMode = pRenderContext->IsMapModeEnabled(); + pRenderContext->EnableMapMode( false ); + InvertFlags nInvertStyle; + if ( pData->mnStyle & CURSOR_SHADOW ) + nInvertStyle = InvertFlags::N50; + else + nInvertStyle = InvertFlags::NONE; + + tools::Rectangle aRect( pData->maPixPos, pData->maPixSize ); + if ( pData->mnDirection != CursorDirection::NONE || pData->mnOrientation ) + { + tools::Polygon aPoly( aRect ); + if( aPoly.GetSize() == 5 ) + { + aPoly[1].AdjustX(1 ); // include the right border + aPoly[2].AdjustX(1 ); + + // apply direction flag after slant to use the correct shape + if (!bDisableCursorIndicator && pData->mnDirection != CursorDirection::NONE) + { + Point pAry[7]; + // Related system settings for "delta" could be: + // gtk cursor-aspect-ratio and windows SPI_GETCARETWIDTH + int delta = (aRect.getHeight() * 4 / 100) + 1; + if( pData->mnDirection == CursorDirection::LTR ) + { + // left-to-right + pAry[0] = aPoly.GetPoint( 0 ); + pAry[1] = aPoly.GetPoint( 1 ); + pAry[2] = pAry[1]; + pAry[2].AdjustX(delta); + pAry[2].AdjustY(delta); + pAry[3] = pAry[1]; + pAry[3].AdjustY(delta * 2); + pAry[4] = aPoly.GetPoint( 2 ); + pAry[5] = aPoly.GetPoint( 3 ); + pAry[6] = aPoly.GetPoint( 4 ); + } + else if( pData->mnDirection == CursorDirection::RTL ) + { + // right-to-left + pAry[0] = aPoly.GetPoint( 0 ); + pAry[1] = aPoly.GetPoint( 1 ); + pAry[2] = aPoly.GetPoint( 2 ); + pAry[3] = aPoly.GetPoint( 3 ); + pAry[4] = pAry[0]; + pAry[4].AdjustY(delta*2); + pAry[5] = pAry[0]; + pAry[5].AdjustX(-delta); + pAry[5].AdjustY(delta); + pAry[6] = aPoly.GetPoint( 4 ); + } + aPoly = tools::Polygon( 7, pAry); + } + + if ( pData->mnOrientation ) + aPoly.Rotate( pData->maPixRotOff, pData->mnOrientation ); + pRenderContext->Invert( aPoly, nInvertStyle ); + aPaintRect = aPoly.GetBoundRect(); + } + } + else + { + pRenderContext->Invert( aRect, nInvertStyle ); + aPaintRect = aRect; + } + pRenderContext->EnableMapMode( bMapMode ); + return aPaintRect; +} + +static void ImplCursorInvert(vcl::Window* pWindow, ImplCursorData const * pData) +{ + if (!pWindow || pWindow->isDisposed()) + return; + + vcl::PaintBufferGuardPtr pGuard; + const bool bDoubleBuffering = pWindow->SupportsDoubleBuffering(); + if (bDoubleBuffering) + pGuard.reset(new vcl::PaintBufferGuard(pWindow->ImplGetWindowImpl()->mpFrameData, pWindow)); + + vcl::RenderContext* pRenderContext = bDoubleBuffering ? pGuard->GetRenderContext() : pWindow->GetOutDev(); + + tools::Rectangle aPaintRect = ImplCursorInvert(pRenderContext, pData); + if (bDoubleBuffering) + pGuard->SetPaintRect(pRenderContext->PixelToLogic(aPaintRect)); +} + +bool vcl::Cursor::ImplPrepForDraw(const OutputDevice* pDevice, ImplCursorData& rData) +{ + if (pDevice && !rData.mbCurVisible) + { + rData.maPixPos = pDevice->LogicToPixel( maPos ); + rData.maPixSize = pDevice->LogicToPixel( maSize ); + rData.mnOrientation = mnOrientation; + rData.mnDirection = mnDirection; + + // correct the position with the offset + rData.maPixRotOff = rData.maPixPos; + + // use width (as set in Settings) if size is 0, + if (!rData.maPixSize.Width()) + rData.maPixSize.setWidth(pDevice->GetSettings().GetStyleSettings().GetCursorSize()); + return true; + } + return false; +} + +void vcl::Cursor::ImplDraw() +{ + if (mpData && mpData->mpWindow) + { + // calculate output area + if (ImplPrepForDraw(mpData->mpWindow->GetOutDev(), *mpData)) + { + // display + ImplCursorInvert(mpData->mpWindow, mpData.get()); + mpData->mbCurVisible = true; + } + } +} + +void vcl::Cursor::DrawToDevice(OutputDevice& rRenderContext) +{ + ImplCursorData aData; + aData.mnStyle = 0; + aData.mbCurVisible = false; + // calculate output area + if (ImplPrepForDraw(&rRenderContext, aData)) + { + // display + ImplCursorInvert(&rRenderContext, &aData); + } +} + +void vcl::Cursor::ImplRestore() +{ + assert( mpData && mpData->mbCurVisible ); + + ImplCursorInvert(mpData->mpWindow, mpData.get()); + mpData->mbCurVisible = false; +} + +void vcl::Cursor::ImplDoShow( bool bDrawDirect, bool bRestore ) +{ + if ( !mbVisible ) + return; + + vcl::Window* pWindow; + if ( mpWindow ) + pWindow = mpWindow; + else + { + // show the cursor, if there is an active window and the cursor + // has been selected in this window + pWindow = Application::GetFocusWindow(); + if (!pWindow || !pWindow->mpWindowImpl || (pWindow->mpWindowImpl->mpCursor != this) + || pWindow->mpWindowImpl->mbInPaint + || !pWindow->mpWindowImpl->mpFrameData->mbHasFocus) + pWindow = nullptr; + } + + if ( !pWindow ) + return; + + if ( !mpData ) + { + mpData.reset( new ImplCursorData ); + mpData->mbCurVisible = false; + mpData->maTimer.SetInvokeHandler( LINK( this, Cursor, ImplTimerHdl ) ); + } + + mpData->mpWindow = pWindow; + mpData->mnStyle = mnStyle; + if ( bDrawDirect || bRestore ) + ImplDraw(); + + if ( !mpWindow && (bDrawDirect || !mpData->maTimer.IsActive()) ) + { + mpData->maTimer.SetTimeout( pWindow->GetSettings().GetStyleSettings().GetCursorBlinkTime() ); + if ( mpData->maTimer.GetTimeout() != STYLE_CURSOR_NOBLINKTIME ) + mpData->maTimer.Start(); + else if ( !mpData->mbCurVisible ) + ImplDraw(); + LOKNotify( pWindow, "cursor_invalidate" ); + LOKNotify( pWindow, "cursor_visible" ); + } +} + +void vcl::Cursor::LOKNotify( vcl::Window* pWindow, const OUString& rAction ) +{ + VclPtr<vcl::Window> pParent = pWindow->GetParentWithLOKNotifier(); + if (!pParent) + return; + + assert(pWindow && "Cannot notify without a window"); + assert(mpData && "Require ImplCursorData"); + assert(comphelper::LibreOfficeKit::isActive()); + + if (comphelper::LibreOfficeKit::isDialogPainting()) + return; + + const vcl::ILibreOfficeKitNotifier* pNotifier = pParent->GetLOKNotifier(); + std::vector<vcl::LOKPayloadItem> aItems; + if (rAction == "cursor_visible") + aItems.emplace_back("visible", mpData->mbCurVisible ? "true" : "false"); + else if (rAction == "cursor_invalidate") + { + const tools::Long nX = pWindow->GetOutOffXPixel() + pWindow->LogicToPixel(GetPos()).X() - pParent->GetOutOffXPixel(); + const tools::Long nY = pWindow->GetOutOffYPixel() + pWindow->LogicToPixel(GetPos()).Y() - pParent->GetOutOffYPixel(); + Size aSize = pWindow->LogicToPixel(GetSize()); + if (!aSize.Width()) + aSize.setWidth( pWindow->GetSettings().GetStyleSettings().GetCursorSize() ); + + Point aPos(nX, nY); + + if (pWindow->IsRTLEnabled() && pWindow->GetOutDev() && pParent->GetOutDev() + && !pWindow->GetOutDev()->ImplIsAntiparallel()) + pParent->GetOutDev()->ReMirror(aPos); + + if (!pWindow->IsRTLEnabled() && pWindow->GetOutDev() && pParent->GetOutDev() + && pWindow->GetOutDev()->ImplIsAntiparallel()) + { + pWindow->GetOutDev()->ReMirror(aPos); + pParent->GetOutDev()->ReMirror(aPos); + } + + const tools::Rectangle aRect(aPos, aSize); + aItems.emplace_back("rectangle", aRect.toString()); + } + + pNotifier->notifyWindow(pParent->GetLOKWindowId(), rAction, aItems); +} + +bool vcl::Cursor::ImplDoHide( bool bSuspend ) +{ + bool bWasCurVisible = false; + if ( mpData && mpData->mpWindow ) + { + bWasCurVisible = mpData->mbCurVisible; + if ( mpData->mbCurVisible ) + ImplRestore(); + + if ( !bSuspend ) + { + LOKNotify( mpData->mpWindow, "cursor_visible" ); + mpData->maTimer.Stop(); + mpData->mpWindow = nullptr; + } + } + return bWasCurVisible; +} + +void vcl::Cursor::ImplShow() +{ + ImplDoShow( true/*bDrawDirect*/, false ); +} + +void vcl::Cursor::ImplHide() +{ + ImplDoHide( false ); +} + +void vcl::Cursor::ImplResume( bool bRestore ) +{ + ImplDoShow( false, bRestore ); +} + +bool vcl::Cursor::ImplSuspend() +{ + return ImplDoHide( true ); +} + +void vcl::Cursor::ImplNew() +{ + if ( !(mbVisible && mpData && mpData->mpWindow) ) + return; + + if ( mpData->mbCurVisible ) + ImplRestore(); + + ImplDraw(); + if ( !mpWindow ) + { + LOKNotify( mpData->mpWindow, "cursor_invalidate" ); + if ( mpData->maTimer.GetTimeout() != STYLE_CURSOR_NOBLINKTIME ) + mpData->maTimer.Start(); + } +} + +IMPL_LINK_NOARG(vcl::Cursor, ImplTimerHdl, Timer *, void) +{ + if ( mpData->mbCurVisible ) + ImplRestore(); + else + ImplDraw(); +} + +vcl::Cursor::Cursor() +{ + mpData = nullptr; + mpWindow = nullptr; + mnOrientation = 0_deg10; + mnDirection = CursorDirection::NONE; + mnStyle = 0; + mbVisible = false; +} + +vcl::Cursor::Cursor( const Cursor& rCursor ) : + maSize( rCursor.maSize ), + maPos( rCursor.maPos ) +{ + mpData = nullptr; + mpWindow = nullptr; + mnOrientation = rCursor.mnOrientation; + mnDirection = rCursor.mnDirection; + mnStyle = 0; + mbVisible = rCursor.mbVisible; +} + +vcl::Cursor::~Cursor() +{ + if (mpData && mpData->mbCurVisible) + ImplRestore(); +} + +void vcl::Cursor::SetStyle( sal_uInt16 nStyle ) +{ + if ( mnStyle != nStyle ) + { + mnStyle = nStyle; + ImplNew(); + } +} + +void vcl::Cursor::Show() +{ + if ( !mbVisible ) + { + mbVisible = true; + ImplShow(); + } +} + +void vcl::Cursor::Hide() +{ + if ( mbVisible ) + { + mbVisible = false; + ImplHide(); + } +} + +void vcl::Cursor::SetWindow( vcl::Window* pWindow ) +{ + if ( mpWindow.get() != pWindow ) + { + mpWindow = pWindow; + ImplNew(); + } +} + +void vcl::Cursor::SetPos( const Point& rPoint ) +{ + if ( maPos != rPoint ) + { + maPos = rPoint; + ImplNew(); + } +} + +void vcl::Cursor::SetSize( const Size& rSize ) +{ + if ( maSize != rSize ) + { + maSize = rSize; + ImplNew(); + } +} + +void vcl::Cursor::SetWidth( tools::Long nNewWidth ) +{ + if ( maSize.Width() != nNewWidth ) + { + maSize.setWidth( nNewWidth ); + ImplNew(); + } +} + +void vcl::Cursor::SetOrientation( Degree10 nNewOrientation ) +{ + if ( mnOrientation != nNewOrientation ) + { + mnOrientation = nNewOrientation; + ImplNew(); + } +} + +void vcl::Cursor::SetDirection( CursorDirection nNewDirection ) +{ + if ( mnDirection != nNewDirection ) + { + mnDirection = nNewDirection; + ImplNew(); + } +} + +vcl::Cursor& vcl::Cursor::operator=( const vcl::Cursor& rCursor ) +{ + maPos = rCursor.maPos; + maSize = rCursor.maSize; + mnOrientation = rCursor.mnOrientation; + mnDirection = rCursor.mnDirection; + mbVisible = rCursor.mbVisible; + ImplNew(); + + return *this; +} + +bool vcl::Cursor::operator==( const vcl::Cursor& rCursor ) const +{ + return + ((maPos == rCursor.maPos) && + (maSize == rCursor.maSize) && + (mnOrientation == rCursor.mnOrientation) && + (mnDirection == rCursor.mnDirection) && + (mbVisible == rCursor.mbVisible)) + ; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |