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Diffstat (limited to 'vcl/source/window/scrwnd.cxx')
| -rw-r--r-- | vcl/source/window/scrwnd.cxx | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/vcl/source/window/scrwnd.cxx b/vcl/source/window/scrwnd.cxx new file mode 100644 index 000000000..6376ea0be --- /dev/null +++ b/vcl/source/window/scrwnd.cxx @@ -0,0 +1,379 @@ +/* -*- 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 <limits.h> + +#include <o3tl/float_int_conversion.hxx> +#include <tools/time.hxx> + +#include <bitmaps.hlst> +#include <svdata.hxx> +#include <scrwnd.hxx> + +#include <vcl/timer.hxx> +#include <vcl/commandevent.hxx> +#include <vcl/event.hxx> +#include <vcl/ptrstyle.hxx> +#include <sal/log.hxx> + +#include <math.h> + +#define WHEEL_WIDTH 25 +#define WHEEL_RADIUS ((WHEEL_WIDTH) >> 1 ) +#define MAX_TIME 300 +#define MIN_TIME 20 +#define DEF_TIMEOUT 50 + +ImplWheelWindow::ImplWheelWindow( vcl::Window* pParent ) : + FloatingWindow ( pParent, 0 ), + mnRepaintTime ( 1 ), + mnTimeout ( DEF_TIMEOUT ), + mnWheelMode ( WheelMode::NONE ), + mnActDist ( 0 ), + mnActDeltaX ( 0 ), + mnActDeltaY ( 0 ) +{ + // we need a parent + SAL_WARN_IF( !pParent, "vcl", "ImplWheelWindow::ImplWheelWindow(): Parent not set!" ); + + const Size aSize( pParent->GetOutputSizePixel() ); + const StartAutoScrollFlags nFlags = ImplGetSVData()->mpWinData->mnAutoScrollFlags; + const bool bHorz( nFlags & StartAutoScrollFlags::Horz ); + const bool bVert( nFlags & StartAutoScrollFlags::Vert ); + + // calculate maximum speed distance + mnMaxWidth = static_cast<sal_uLong>( 0.4 * hypot( static_cast<double>(aSize.Width()), aSize.Height() ) ); + + // create wheel window + SetTitleType( FloatWinTitleType::NONE ); + ImplCreateImageList(); + BitmapEx aBmp(SV_RESID_BITMAP_SCROLLMSK); + ImplSetRegion(aBmp.GetBitmap()); + + // set wheel mode + if( bHorz && bVert ) + ImplSetWheelMode( WheelMode::VH ); + else if( bHorz ) + ImplSetWheelMode( WheelMode::H ); + else + ImplSetWheelMode( WheelMode::V ); + + // init timer + mpTimer.reset(new Timer("WheelWindowTimer")); + mpTimer->SetInvokeHandler( LINK( this, ImplWheelWindow, ImplScrollHdl ) ); + mpTimer->SetTimeout( mnTimeout ); + mpTimer->Start(); + + CaptureMouse(); +} + +ImplWheelWindow::~ImplWheelWindow() +{ + disposeOnce(); +} + +void ImplWheelWindow::dispose() +{ + ImplStop(); + mpTimer.reset(); + FloatingWindow::dispose(); +} + +void ImplWheelWindow::ImplStop() +{ + ReleaseMouse(); + mpTimer->Stop(); + Show(false); +} + +void ImplWheelWindow::ImplSetRegion( const Bitmap& rRegionBmp ) +{ + Point aPos( GetPointerPosPixel() ); + const Size aSize( rRegionBmp.GetSizePixel() ); + const tools::Rectangle aRect( Point(), aSize ); + + maCenter = maLastMousePos = aPos; + aPos.AdjustX( -(aSize.Width() >> 1) ); + aPos.AdjustY( -(aSize.Height() >> 1) ); + + SetPosSizePixel( aPos, aSize ); + SetWindowRegionPixel( rRegionBmp.CreateRegion( COL_BLACK, aRect ) ); +} + +void ImplWheelWindow::ImplCreateImageList() +{ + maImgList.emplace_back(StockImage::Yes, SV_RESID_BITMAP_SCROLLVH); + maImgList.emplace_back(StockImage::Yes, SV_RESID_BITMAP_SCROLLV); + maImgList.emplace_back(StockImage::Yes, SV_RESID_BITMAP_SCROLLH); + maImgList.emplace_back(StockImage::Yes, SV_RESID_BITMAP_WHEELVH); + maImgList.emplace_back(StockImage::Yes, SV_RESID_BITMAP_WHEELV); + maImgList.emplace_back(StockImage::Yes, SV_RESID_BITMAP_WHEELH); +} + +void ImplWheelWindow::ImplSetWheelMode( WheelMode nWheelMode ) +{ + if( nWheelMode == mnWheelMode ) + return; + + mnWheelMode = nWheelMode; + + if( WheelMode::NONE == mnWheelMode ) + { + if( IsVisible() ) + Hide(); + } + else + { + if( !IsVisible() ) + Show(); + + Invalidate(); + } +} + +void ImplWheelWindow::ImplDrawWheel(vcl::RenderContext& rRenderContext) +{ + int nIndex; + + switch (mnWheelMode) + { + case WheelMode::VH: + nIndex = 0; + break; + case WheelMode::V: + nIndex = 1; + break; + case WheelMode::H: + nIndex = 2; + break; + case WheelMode::ScrollVH: + nIndex = 3; + break; + case WheelMode::ScrollV: + nIndex = 4; + break; + case WheelMode::ScrollH: + nIndex = 5; + break; + default: + nIndex = -1; + break; + } + + if (nIndex >= 0) + rRenderContext.DrawImage(Point(), maImgList[nIndex]); +} + +void ImplWheelWindow::ImplRecalcScrollValues() +{ + if( mnActDist < WHEEL_RADIUS ) + { + mnActDeltaX = mnActDeltaY = 0; + mnTimeout = DEF_TIMEOUT; + } + else + { + sal_uInt64 nCurTime; + + // calc current time + if( mnMaxWidth ) + { + const double fExp = ( static_cast<double>(mnActDist) / mnMaxWidth ) * log10( double(MAX_TIME) / MIN_TIME ); + nCurTime = static_cast<sal_uInt64>( MAX_TIME / pow( 10., fExp ) ); + } + else + nCurTime = MAX_TIME; + + if( !nCurTime ) + nCurTime = 1; + + if( mnRepaintTime <= nCurTime ) + mnTimeout = nCurTime - mnRepaintTime; + else + { + sal_uInt64 nMult = mnRepaintTime / nCurTime; + + if( !( mnRepaintTime % nCurTime ) ) + mnTimeout = 0; + else + mnTimeout = ++nMult * nCurTime - mnRepaintTime; + + double fValX = static_cast<double>(mnActDeltaX) * nMult; + double fValY = static_cast<double>(mnActDeltaY) * nMult; + + mnActDeltaX = o3tl::saturating_cast<tools::Long>(fValX); + mnActDeltaY = o3tl::saturating_cast<tools::Long>(fValY); + } + } +} + +PointerStyle ImplWheelWindow::ImplGetMousePointer( tools::Long nDistX, tools::Long nDistY ) const +{ + PointerStyle eStyle; + const StartAutoScrollFlags nFlags = ImplGetSVData()->mpWinData->mnAutoScrollFlags; + const bool bHorz( nFlags & StartAutoScrollFlags::Horz ); + const bool bVert( nFlags & StartAutoScrollFlags::Vert ); + + if( bHorz || bVert ) + { + if( mnActDist < WHEEL_RADIUS ) + { + if( bHorz && bVert ) + eStyle = PointerStyle::AutoScrollNSWE; + else if( bHorz ) + eStyle = PointerStyle::AutoScrollWE; + else + eStyle = PointerStyle::AutoScrollNS; + } + else + { + double fAngle = basegfx::rad2deg(atan2(static_cast<double>(-nDistY), nDistX)); + + if( fAngle < 0.0 ) + fAngle += 360.; + + if( bHorz && bVert ) + { + if( fAngle >= 22.5 && fAngle <= 67.5 ) + eStyle = PointerStyle::AutoScrollNE; + else if( fAngle >= 67.5 && fAngle <= 112.5 ) + eStyle = PointerStyle::AutoScrollN; + else if( fAngle >= 112.5 && fAngle <= 157.5 ) + eStyle = PointerStyle::AutoScrollNW; + else if( fAngle >= 157.5 && fAngle <= 202.5 ) + eStyle = PointerStyle::AutoScrollW; + else if( fAngle >= 202.5 && fAngle <= 247.5 ) + eStyle = PointerStyle::AutoScrollSW; + else if( fAngle >= 247.5 && fAngle <= 292.5 ) + eStyle = PointerStyle::AutoScrollS; + else if( fAngle >= 292.5 && fAngle <= 337.5 ) + eStyle = PointerStyle::AutoScrollSE; + else + eStyle = PointerStyle::AutoScrollE; + } + else if( bHorz ) + { + if( fAngle >= 270. || fAngle <= 90. ) + eStyle = PointerStyle::AutoScrollE; + else + eStyle = PointerStyle::AutoScrollW; + } + else + { + if( fAngle >= 0. && fAngle <= 180. ) + eStyle = PointerStyle::AutoScrollN; + else + eStyle = PointerStyle::AutoScrollS; + } + } + } + else + eStyle = PointerStyle::Arrow; + + return eStyle; +} + +void ImplWheelWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle&) +{ + ImplDrawWheel(rRenderContext); +} + +void ImplWheelWindow::MouseMove( const MouseEvent& rMEvt ) +{ + FloatingWindow::MouseMove( rMEvt ); + + const Point aMousePos( OutputToScreenPixel( rMEvt.GetPosPixel() ) ); + const tools::Long nDistX = aMousePos.X() - maCenter.X(); + const tools::Long nDistY = aMousePos.Y() - maCenter.Y(); + + mnActDist = static_cast<sal_uLong>(hypot( static_cast<double>(nDistX), nDistY )); + + const PointerStyle eActStyle = ImplGetMousePointer( nDistX, nDistY ); + const StartAutoScrollFlags nFlags = ImplGetSVData()->mpWinData->mnAutoScrollFlags; + const bool bHorz( nFlags & StartAutoScrollFlags::Horz ); + const bool bVert( nFlags & StartAutoScrollFlags::Vert ); + const bool bOuter = mnActDist > WHEEL_RADIUS; + + if( bOuter && ( maLastMousePos != aMousePos ) ) + { + switch( eActStyle ) + { + case PointerStyle::AutoScrollN: mnActDeltaX = +0; mnActDeltaY = +1; break; + case PointerStyle::AutoScrollS: mnActDeltaX = +0; mnActDeltaY = -1; break; + case PointerStyle::AutoScrollW: mnActDeltaX = +1; mnActDeltaY = +0; break; + case PointerStyle::AutoScrollE: mnActDeltaX = -1; mnActDeltaY = +0; break; + case PointerStyle::AutoScrollNW: mnActDeltaX = +1; mnActDeltaY = +1; break; + case PointerStyle::AutoScrollNE: mnActDeltaX = -1; mnActDeltaY = +1; break; + case PointerStyle::AutoScrollSW: mnActDeltaX = +1; mnActDeltaY = -1; break; + case PointerStyle::AutoScrollSE: mnActDeltaX = -1; mnActDeltaY = -1; break; + + default: + break; + } + } + + ImplRecalcScrollValues(); + maLastMousePos = aMousePos; + SetPointer( eActStyle ); + + if( bHorz && bVert ) + ImplSetWheelMode( bOuter ? WheelMode::ScrollVH : WheelMode::VH ); + else if( bHorz ) + ImplSetWheelMode( bOuter ? WheelMode::ScrollH : WheelMode::H ); + else + ImplSetWheelMode( bOuter ? WheelMode::ScrollV : WheelMode::V ); +} + +void ImplWheelWindow::MouseButtonUp( const MouseEvent& rMEvt ) +{ + if( mnActDist > WHEEL_RADIUS ) + GetParent()->EndAutoScroll(); + else + FloatingWindow::MouseButtonUp( rMEvt ); +} + +IMPL_LINK_NOARG(ImplWheelWindow, ImplScrollHdl, Timer *, void) +{ + if ( mnActDeltaX || mnActDeltaY ) + { + vcl::Window* pWindow = GetParent(); + const Point aMousePos( pWindow->OutputToScreenPixel( pWindow->GetPointerPosPixel() ) ); + Point aCmdMousePos( pWindow->ImplFrameToOutput( aMousePos ) ); + CommandScrollData aScrollData( mnActDeltaX, mnActDeltaY ); + CommandEvent aCEvt( aCmdMousePos, CommandEventId::AutoScroll, true, &aScrollData ); + NotifyEvent aNCmdEvt( MouseNotifyEvent::COMMAND, pWindow, &aCEvt ); + + if ( !ImplCallPreNotify( aNCmdEvt ) ) + { + const sal_uInt64 nTime = tools::Time::GetSystemTicks(); + VclPtr<ImplWheelWindow> xWin(this); + pWindow->Command( aCEvt ); + if( xWin->isDisposed() ) + return; + mnRepaintTime = std::max( tools::Time::GetSystemTicks() - nTime, sal_uInt64(1) ); + ImplRecalcScrollValues(); + } + } + + if ( mnTimeout != mpTimer->GetTimeout() ) + mpTimer->SetTimeout( mnTimeout ); + mpTimer->Start(); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |