Files
libreoffice/vcl/source/window/scrwnd.cxx
Noel Grandin a086ca1898 convert AUTOSCROLL constants to scoped enum
Change-Id: Id1d2b5c13ad6af05314cba60ba5b9a62e0683f5e
2015-05-28 12:47:06 +02:00

391 lines
12 KiB
C++

/* -*- 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 <tools/time.hxx>
#include <tools/debug.hxx>
#include <svids.hrc>
#include <svdata.hxx>
#include <scrwnd.hxx>
#include <vcl/timer.hxx>
#include <vcl/event.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 ( 1UL ),
mnTimeout ( DEF_TIMEOUT ),
mnWheelMode ( WHEELMODE_NONE ),
mnActDist ( 0UL ),
mnActDeltaX ( 0L ),
mnActDeltaY ( 0L )
{
// we need a parent
DBG_ASSERT( pParent, "ImplWheelWindow::ImplWheelWindow(): Parent not set!" );
const Size aSize( pParent->GetOutputSizePixel() );
const StartAutoScrollFlags nFlags = ImplGetSVData()->maWinData.mnAutoScrollFlags;
const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
const bool bVert( nFlags & StartAutoScrollFlags::Vert );
// calculate maximum speed distance
mnMaxWidth = (sal_uLong) ( 0.4 * hypot( (double) aSize.Width(), aSize.Height() ) );
// create wheel window
SetTitleType( FloatWinTitleType::NONE );
ImplCreateImageList();
ResMgr* pResMgr = ImplGetResMgr();
Bitmap aBmp;
if( pResMgr )
aBmp = Bitmap( ResId( SV_RESID_BITMAP_SCROLLMSK, *pResMgr ) );
ImplSetRegion( aBmp );
// set wheel mode
if( bHorz && bVert )
ImplSetWheelMode( WHEELMODE_VH );
else if( bHorz )
ImplSetWheelMode( WHEELMODE_H );
else
ImplSetWheelMode( WHEELMODE_V );
// init timer
mpTimer = new Timer;
mpTimer->SetTimeoutHdl( LINK( this, ImplWheelWindow, ImplScrollHdl ) );
mpTimer->SetTimeout( mnTimeout );
mpTimer->Start();
CaptureMouse();
}
ImplWheelWindow::~ImplWheelWindow()
{
disposeOnce();
}
void ImplWheelWindow::dispose()
{
ImplStop();
delete mpTimer;
mpTimer = NULL;
FloatingWindow::dispose();
}
void ImplWheelWindow::ImplStop()
{
ReleaseMouse();
mpTimer->Stop();
Show(false);
}
void ImplWheelWindow::ImplSetRegion( const Bitmap& rRegionBmp )
{
Point aPos( GetPointerPosPixel() );
const Size aSize( rRegionBmp.GetSizePixel() );
Point aPoint;
const Rectangle aRect( aPoint, aSize );
maCenter = maLastMousePos = aPos;
aPos.X() -= aSize.Width() >> 1;
aPos.Y() -= aSize.Height() >> 1;
SetPosSizePixel( aPos, aSize );
SetWindowRegionPixel( rRegionBmp.CreateRegion( COL_BLACK, aRect ) );
}
void ImplWheelWindow::ImplCreateImageList()
{
ResMgr* pResMgr = ImplGetResMgr();
if( pResMgr )
maImgList.InsertFromHorizontalBitmap
( ResId( SV_RESID_BITMAP_SCROLLBMP, *pResMgr ), 6, NULL );
}
void ImplWheelWindow::ImplSetWheelMode( sal_uLong nWheelMode )
{
if( nWheelMode != mnWheelMode )
{
mnWheelMode = nWheelMode;
if( WHEELMODE_NONE == mnWheelMode )
{
if( IsVisible() )
Hide();
}
else
{
if( !IsVisible() )
Show();
Invalidate();
}
}
}
void ImplWheelWindow::ImplDrawWheel(vcl::RenderContext& rRenderContext)
{
sal_uInt16 nId;
switch (mnWheelMode)
{
case WHEELMODE_VH:
nId = 1;
break;
case WHEELMODE_V:
nId = 2;
break;
case WHEELMODE_H:
nId = 3;
break;
case WHEELMODE_SCROLL_VH:
nId = 4;
break;
case WHEELMODE_SCROLL_V:
nId = 5;
break;
case WHEELMODE_SCROLL_H:
nId = 6;
break;
default:
nId = 0;
break;
}
if (nId)
rRenderContext.DrawImage(Point(), maImgList.GetImage(nId));
}
void ImplWheelWindow::ImplRecalcScrollValues()
{
if( mnActDist < WHEEL_RADIUS )
{
mnActDeltaX = mnActDeltaY = 0L;
mnTimeout = DEF_TIMEOUT;
}
else
{
sal_uInt64 nCurTime;
// calc current time
if( mnMaxWidth )
{
const double fExp = ( (double) mnActDist / mnMaxWidth ) * log10( (double) MAX_TIME / MIN_TIME );
nCurTime = (sal_uInt64) ( MAX_TIME / pow( 10., fExp ) );
}
else
nCurTime = MAX_TIME;
if( !nCurTime )
nCurTime = 1UL;
if( mnRepaintTime <= nCurTime )
mnTimeout = nCurTime - mnRepaintTime;
else
{
sal_uInt64 nMult = mnRepaintTime / nCurTime;
if( !( mnRepaintTime % nCurTime ) )
mnTimeout = 0UL;
else
mnTimeout = ++nMult * nCurTime - mnRepaintTime;
double fValX = (double) mnActDeltaX * nMult;
double fValY = (double) mnActDeltaY * nMult;
if( fValX > LONG_MAX )
mnActDeltaX = LONG_MAX;
else if( fValX < LONG_MIN )
mnActDeltaX = LONG_MIN;
else
mnActDeltaX = (long) fValX;
if( fValY > LONG_MAX )
mnActDeltaY = LONG_MAX;
else if( fValY < LONG_MIN )
mnActDeltaY = LONG_MIN;
else
mnActDeltaY = (long) fValY;
}
}
}
PointerStyle ImplWheelWindow::ImplGetMousePointer( long nDistX, long nDistY )
{
PointerStyle eStyle;
const StartAutoScrollFlags nFlags = ImplGetSVData()->maWinData.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 = atan2( (double) -nDistY, nDistX ) / F_PI180;
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 Rectangle&)
{
ImplDrawWheel(rRenderContext);
}
void ImplWheelWindow::MouseMove( const MouseEvent& rMEvt )
{
FloatingWindow::MouseMove( rMEvt );
const Point aMousePos( OutputToScreenPixel( rMEvt.GetPosPixel() ) );
const long nDistX = aMousePos.X() - maCenter.X();
const long nDistY = aMousePos.Y() - maCenter.Y();
mnActDist = (sal_uLong) hypot( (double) nDistX, nDistY );
const PointerStyle eActStyle = ImplGetMousePointer( nDistX, nDistY );
const StartAutoScrollFlags nFlags = ImplGetSVData()->maWinData.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 = +0L, mnActDeltaY = +1L; break;
case( PointerStyle::AutoScrollS ): mnActDeltaX = +0L, mnActDeltaY = -1L; break;
case( PointerStyle::AutoScrollW ): mnActDeltaX = +1L, mnActDeltaY = +0L; break;
case( PointerStyle::AutoScrollE ): mnActDeltaX = -1L, mnActDeltaY = +0L; break;
case( PointerStyle::AutoScrollNW ): mnActDeltaX = +1L, mnActDeltaY = +1L; break;
case( PointerStyle::AutoScrollNE ): mnActDeltaX = -1L, mnActDeltaY = +1L; break;
case( PointerStyle::AutoScrollSW ): mnActDeltaX = +1L, mnActDeltaY = -1L; break;
case( PointerStyle::AutoScrollSE ): mnActDeltaX = -1L, mnActDeltaY = -1L; break;
default:
break;
}
}
ImplRecalcScrollValues();
maLastMousePos = aMousePos;
SetPointer( eActStyle );
if( bHorz && bVert )
ImplSetWheelMode( bOuter ? WHEELMODE_SCROLL_VH : WHEELMODE_VH );
else if( bHorz )
ImplSetWheelMode( bOuter ? WHEELMODE_SCROLL_H : WHEELMODE_H );
else
ImplSetWheelMode( bOuter ? WHEELMODE_SCROLL_V : WHEELMODE_V );
}
void ImplWheelWindow::MouseButtonUp( const MouseEvent& rMEvt )
{
if( mnActDist > WHEEL_RADIUS )
GetParent()->EndAutoScroll();
else
FloatingWindow::MouseButtonUp( rMEvt );
}
IMPL_LINK_NOARG_TYPED(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();
ImplDelData aDel( this );
pWindow->Command( aCEvt );
if( aDel.IsDead() )
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: */