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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"
// include ---------------------------------------------------------------
#include <svx/zoomsliderctrl.hxx>
#ifndef _STATUS_HXX //autogen
#include <vcl/status.hxx>
#endif
#ifndef _MENU_HXX //autogen
#include <vcl/menu.hxx>
#endif
#include <vcl/image.hxx>
#include <svx/zoomslideritem.hxx>
#include <svx/dialmgr.hxx>
#include <svx/dialogs.hrc>
#include <set>
// -----------------------------------------------------------------------
SFX_IMPL_STATUSBAR_CONTROL( SvxZoomSliderControl, SvxZoomSliderItem );
// -----------------------------------------------------------------------
struct SvxZoomSliderControl::SvxZoomSliderControl_Impl
{
sal_uInt16 mnCurrentZoom;
sal_uInt16 mnMinZoom;
sal_uInt16 mnMaxZoom;
sal_uInt16 mnSliderCenter;
std::vector< long > maSnappingPointOffsets;
std::vector< sal_uInt16 > maSnappingPointZooms;
Image maSliderButton;
Image maIncreaseButton;
Image maDecreaseButton;
bool mbValuesSet;
bool mbOmitPaint;
SvxZoomSliderControl_Impl() :
mnCurrentZoom( 0 ),
mnMinZoom( 0 ),
mnMaxZoom( 0 ),
mnSliderCenter( 0 ),
maSnappingPointOffsets(),
maSnappingPointZooms(),
maSliderButton(),
maIncreaseButton(),
maDecreaseButton(),
mbValuesSet( false ),
mbOmitPaint( false ) {}
};
// -----------------------------------------------------------------------
const long nButtonWidth = 10;
const long nButtonHeight = 10;
const long nIncDecWidth = 11;
const long nIncDecHeight = 11;
const long nSliderHeight = 2;
const long nSnappingHeight = 4;
const long nSliderXOffset = 20;
const long nSnappingEpsilon = 5; // snapping epsilon in pixels
const long nSnappingPointsMinDist = nSnappingEpsilon; // minimum distance of two adjacent snapping points
// -----------------------------------------------------------------------
// nOffset referes to the origin of the control:
// + ----------- -
sal_uInt16 SvxZoomSliderControl::Offset2Zoom( long nOffset ) const
{
const long nControlWidth = getControlRect().GetWidth();
sal_uInt16 nRet = 0;
if ( nOffset < nSliderXOffset )
return mpImpl->mnMinZoom;;
if ( nOffset > nControlWidth - nSliderXOffset )
return mpImpl->mnMaxZoom;
// check for snapping points:
sal_uInt16 nCount = 0;
std::vector< long >::iterator aSnappingPointIter;
for ( aSnappingPointIter = mpImpl->maSnappingPointOffsets.begin();
aSnappingPointIter != mpImpl->maSnappingPointOffsets.end();
++aSnappingPointIter )
{
const long nCurrent = *aSnappingPointIter;
if ( Abs(nCurrent - nOffset) < nSnappingEpsilon )
{
nOffset = nCurrent;
nRet = mpImpl->maSnappingPointZooms[ nCount ];
break;
}
++nCount;
}
if ( 0 == nRet )
{
if ( nOffset < nControlWidth / 2 )
{
// first half of slider
const long nFirstHalfRange = mpImpl->mnSliderCenter - mpImpl->mnMinZoom;
const long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
const long nZoomPerSliderPixel = (1000 * nFirstHalfRange) / nHalfSliderWidth;
const long nOffsetToSliderLeft = nOffset - nSliderXOffset;
nRet = mpImpl->mnMinZoom + sal_uInt16( nOffsetToSliderLeft * nZoomPerSliderPixel / 1000 );
}
else
{
// second half of slider
const long nSecondHalfRange = mpImpl->mnMaxZoom - mpImpl->mnSliderCenter;
const long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
const long nZoomPerSliderPixel = 1000 * nSecondHalfRange / nHalfSliderWidth;
const long nOffsetToSliderCenter = nOffset - nControlWidth/2;
nRet = mpImpl->mnSliderCenter + sal_uInt16( nOffsetToSliderCenter * nZoomPerSliderPixel / 1000 );
}
}
if ( nRet < mpImpl->mnMinZoom )
nRet = mpImpl->mnMinZoom;
else if ( nRet > mpImpl->mnMaxZoom )
nRet = mpImpl->mnMaxZoom;
return nRet;
}
// returns the offset to the left control border
long SvxZoomSliderControl::Zoom2Offset( sal_uInt16 nCurrentZoom ) const
{
const long nControlWidth = getControlRect().GetWidth();
long nRet = nSliderXOffset;
const long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
if ( nCurrentZoom <= mpImpl->mnSliderCenter )
{
nCurrentZoom = nCurrentZoom - mpImpl->mnMinZoom;
const long nFirstHalfRange = mpImpl->mnSliderCenter - mpImpl->mnMinZoom;
const long nSliderPixelPerZoomPercent = 1000 * nHalfSliderWidth / nFirstHalfRange;
const long nOffset = (nSliderPixelPerZoomPercent * nCurrentZoom) / 1000;
nRet += nOffset;
}
else
{
nCurrentZoom = nCurrentZoom - mpImpl->mnSliderCenter;
const long nSecondHalfRange = mpImpl->mnMaxZoom - mpImpl->mnSliderCenter;
const long nSliderPixelPerZoomPercent = 1000 * nHalfSliderWidth / nSecondHalfRange;
const long nOffset = (nSliderPixelPerZoomPercent * nCurrentZoom) / 1000;
nRet += nHalfSliderWidth + nOffset;
}
return nRet;
}
// -----------------------------------------------------------------------
SvxZoomSliderControl::SvxZoomSliderControl( sal_uInt16 _nSlotId, sal_uInt16 _nId, StatusBar& _rStb ) :
SfxStatusBarControl( _nSlotId, _nId, _rStb ),
mpImpl( new SvxZoomSliderControl_Impl )
{
const sal_Bool bHC = GetStatusBar().GetSettings().GetStyleSettings().GetHighContrastMode();
mpImpl->maSliderButton = Image( SVX_RES( bHC ? RID_SVXBMP_SLIDERBUTTON_HC : RID_SVXBMP_SLIDERBUTTON ) );
mpImpl->maIncreaseButton = Image( SVX_RES( bHC ? RID_SVXBMP_SLIDERINCREASE_HC : RID_SVXBMP_SLIDERINCREASE ) );
mpImpl->maDecreaseButton = Image( SVX_RES( bHC ? RID_SVXBMP_SLIDERDECREASE_HC : RID_SVXBMP_SLIDERDECREASE ) );
}
// -----------------------------------------------------------------------
SvxZoomSliderControl::~SvxZoomSliderControl()
{
delete mpImpl;
}
// -----------------------------------------------------------------------
void SvxZoomSliderControl::StateChanged( sal_uInt16 /*nSID*/, SfxItemState eState, const SfxPoolItem* pState )
{
if ( (SFX_ITEM_AVAILABLE != eState) || pState->ISA( SfxVoidItem ) )
{
GetStatusBar().SetItemText( GetId(), String() );
mpImpl->mbValuesSet = false;
}
else
{
OSL_ENSURE( pState->ISA( SvxZoomSliderItem ), "invalid item type: should be a SvxZoomSliderItem" );
mpImpl->mnCurrentZoom = static_cast<const SvxZoomSliderItem*>( pState )->GetValue();
mpImpl->mnMinZoom = static_cast<const SvxZoomSliderItem*>( pState )->GetMinZoom();
mpImpl->mnMaxZoom = static_cast<const SvxZoomSliderItem*>( pState )->GetMaxZoom();
mpImpl->mnSliderCenter= 100;
mpImpl->mbValuesSet = true;
if ( mpImpl->mnSliderCenter == mpImpl->mnMaxZoom )
mpImpl->mnSliderCenter = mpImpl->mnMinZoom + (sal_uInt16)((mpImpl->mnMaxZoom - mpImpl->mnMinZoom) * 0.5);
DBG_ASSERT( mpImpl->mnMinZoom <= mpImpl->mnCurrentZoom &&
mpImpl->mnMinZoom < mpImpl->mnSliderCenter &&
mpImpl->mnMaxZoom >= mpImpl->mnCurrentZoom &&
mpImpl->mnMaxZoom > mpImpl->mnSliderCenter,
"Looks like the zoom slider item is corrupted" );
const com::sun::star::uno::Sequence < sal_Int32 > rSnappingPoints = static_cast<const SvxZoomSliderItem*>( pState )->GetSnappingPoints();
mpImpl->maSnappingPointOffsets.clear();
mpImpl->maSnappingPointZooms.clear();
// get all snapping points:
std::set< sal_uInt16 > aTmpSnappingPoints;
for ( sal_uInt16 j = 0; j < rSnappingPoints.getLength(); ++j )
{
const sal_Int32 nSnappingPoint = rSnappingPoints[j];
aTmpSnappingPoints.insert( (sal_uInt16)nSnappingPoint );
}
// remove snapping points that are to close to each other:
std::set< sal_uInt16 >::iterator aSnappingPointIter;
long nLastOffset = 0;
for ( aSnappingPointIter = aTmpSnappingPoints.begin(); aSnappingPointIter != aTmpSnappingPoints.end(); ++aSnappingPointIter )
{
const sal_uInt16 nCurrent = *aSnappingPointIter;
const long nCurrentOffset = Zoom2Offset( nCurrent );
if ( nCurrentOffset - nLastOffset >= nSnappingPointsMinDist )
{
mpImpl->maSnappingPointOffsets.push_back( nCurrentOffset );
mpImpl->maSnappingPointZooms.push_back( nCurrent );
nLastOffset = nCurrentOffset;
}
}
}
if ( !mpImpl->mbOmitPaint && GetStatusBar().AreItemsVisible() )
GetStatusBar().SetItemData( GetId(), 0 ); // force repaint
}
// -----------------------------------------------------------------------
void SvxZoomSliderControl::Paint( const UserDrawEvent& rUsrEvt )
{
if ( !mpImpl->mbValuesSet || mpImpl->mbOmitPaint )
return;
const Rectangle aControlRect = getControlRect();
OutputDevice* pDev = rUsrEvt.GetDevice();
Rectangle aRect = rUsrEvt.GetRect();
Rectangle aSlider = aRect;
aSlider.Top() += (aControlRect.GetHeight() - nSliderHeight)/2 - 1;
aSlider.Bottom() = aSlider.Top() + nSliderHeight;
aSlider.Left() += nSliderXOffset;
aSlider.Right() -= nSliderXOffset;
Color aOldLineColor = pDev->GetLineColor();
Color aOldFillColor = pDev->GetFillColor();
pDev->SetLineColor( Color( COL_GRAY ) );
pDev->SetFillColor( Color( COL_GRAY ) );
// draw snapping points:
std::vector< long >::iterator aSnappingPointIter;
for ( aSnappingPointIter = mpImpl->maSnappingPointOffsets.begin();
aSnappingPointIter != mpImpl->maSnappingPointOffsets.end();
++aSnappingPointIter )
{
Rectangle aSnapping( aRect );
aSnapping.Bottom() = aSlider.Top();
aSnapping.Top() = aSnapping.Bottom() - nSnappingHeight;
aSnapping.Left() += *aSnappingPointIter;
aSnapping.Right() = aSnapping.Left();
pDev->DrawRect( aSnapping );
aSnapping.Top() += nSnappingHeight + nSliderHeight;
aSnapping.Bottom() += nSnappingHeight + nSliderHeight;
pDev->DrawRect( aSnapping );
}
// draw slider
Rectangle aFirstLine( aSlider );
aFirstLine.Bottom() = aFirstLine.Top();
Rectangle aSecondLine( aSlider );
aSecondLine.Top() = aSecondLine.Bottom();
Rectangle aLeft( aSlider );
aLeft.Right() = aLeft.Left();
Rectangle aRight( aSlider );
aRight.Left() = aRight.Right();
pDev->SetLineColor( Color ( COL_WHITE ) );
pDev->SetFillColor( Color ( COL_WHITE ) );
pDev->DrawRect( aSecondLine );
pDev->DrawRect( aRight );
pDev->SetLineColor( Color( COL_GRAY ) );
pDev->SetFillColor( Color( COL_GRAY ) );
pDev->DrawRect( aFirstLine );
pDev->DrawRect( aLeft );
// draw slider button
Point aImagePoint = aRect.TopLeft();
aImagePoint.X() += Zoom2Offset( mpImpl->mnCurrentZoom );
aImagePoint.X() -= nButtonWidth/2;
aImagePoint.Y() += (aControlRect.GetHeight() - nButtonHeight)/2;
pDev->DrawImage( aImagePoint, mpImpl->maSliderButton );
// draw decrease button
aImagePoint = aRect.TopLeft();
aImagePoint.X() += (nSliderXOffset - nIncDecWidth)/2;
aImagePoint.Y() += (aControlRect.GetHeight() - nIncDecHeight)/2;
pDev->DrawImage( aImagePoint, mpImpl->maDecreaseButton );
// draw increase button
aImagePoint.X() = aRect.TopLeft().X() + aControlRect.GetWidth() - nIncDecWidth - (nSliderXOffset - nIncDecWidth)/2;
pDev->DrawImage( aImagePoint, mpImpl->maIncreaseButton );
pDev->SetLineColor( aOldLineColor );
pDev->SetFillColor( aOldFillColor );
}
// -----------------------------------------------------------------------
sal_Bool SvxZoomSliderControl::MouseButtonDown( const MouseEvent & rEvt )
{
if ( !mpImpl->mbValuesSet )
return sal_True;;
const Rectangle aControlRect = getControlRect();
const Point aPoint = rEvt.GetPosPixel();
const sal_Int32 nXDiff = aPoint.X() - aControlRect.Left();
const long nButtonLeftOffset = (nSliderXOffset - nIncDecWidth)/2;
const long nButtonRightOffset = (nSliderXOffset + nIncDecWidth)/2;
const long nOldZoom = mpImpl->mnCurrentZoom;
// click to - button
if ( nXDiff >= nButtonLeftOffset && nXDiff <= nButtonRightOffset )
mpImpl->mnCurrentZoom = mpImpl->mnCurrentZoom - 5;
// click to + button
else if ( nXDiff >= aControlRect.GetWidth() - nSliderXOffset + nButtonLeftOffset &&
nXDiff <= aControlRect.GetWidth() - nSliderXOffset + nButtonRightOffset )
mpImpl->mnCurrentZoom = mpImpl->mnCurrentZoom + 5;
// click to slider
else if( nXDiff >= nSliderXOffset && nXDiff <= aControlRect.GetWidth() - nSliderXOffset )
mpImpl->mnCurrentZoom = Offset2Zoom( nXDiff );
if ( mpImpl->mnCurrentZoom < mpImpl->mnMinZoom )
mpImpl->mnCurrentZoom = mpImpl->mnMinZoom;
else if ( mpImpl->mnCurrentZoom > mpImpl->mnMaxZoom )
mpImpl->mnCurrentZoom = mpImpl->mnMaxZoom;
if ( nOldZoom == mpImpl->mnCurrentZoom )
return sal_True;
if ( GetStatusBar().AreItemsVisible() )
GetStatusBar().SetItemData( GetId(), 0 ); // force repaint
mpImpl->mbOmitPaint = true; // optimization: paint before executing command,
// then omit painting which is triggered by the execute function
SvxZoomSliderItem aZoomSliderItem( mpImpl->mnCurrentZoom );
::com::sun::star::uno::Any a;
aZoomSliderItem.QueryValue( a );
::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue > aArgs( 1 );
aArgs[0].Name = rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "ZoomSlider" ));
aArgs[0].Value = a;
execute( aArgs );
mpImpl->mbOmitPaint = false;
return sal_True;
}
// -----------------------------------------------------------------------
sal_Bool SvxZoomSliderControl::MouseMove( const MouseEvent & rEvt )
{
if ( !mpImpl->mbValuesSet )
return sal_True;;
const short nButtons = rEvt.GetButtons();
// check mouse move with button pressed
if ( 1 == nButtons )
{
const Rectangle aControlRect = getControlRect();
const Point aPoint = rEvt.GetPosPixel();
const sal_Int32 nXDiff = aPoint.X() - aControlRect.Left();
if ( nXDiff >= nSliderXOffset && nXDiff <= aControlRect.GetWidth() - nSliderXOffset )
{
mpImpl->mnCurrentZoom = Offset2Zoom( nXDiff );
if ( GetStatusBar().AreItemsVisible() )
GetStatusBar().SetItemData( GetId(), 0 ); // force repaint
mpImpl->mbOmitPaint = true; // optimization: paint before executing command,
// then omit painting which is triggered by the execute function
// commit state change
SvxZoomSliderItem aZoomSliderItem( mpImpl->mnCurrentZoom );
::com::sun::star::uno::Any a;
aZoomSliderItem.QueryValue( a );
::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue > aArgs( 1 );
aArgs[0].Name = rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "ZoomSlider" ));
aArgs[0].Value = a;
execute( aArgs );
mpImpl->mbOmitPaint = false;
}
}
return sal_True;
}
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