office-gobmx/svtools/source/control/scrwin.cxx
2010-04-19 17:46:40 +02:00

572 lines
18 KiB
C++

/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
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*
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
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*
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svtools.hxx"
#define _SVT_SCRWIN_CXX
#include <scrwin.hxx>
//===================================================================
void ScrollableWindow::ImpInitialize( ScrollableWindowFlags nFlags )
{
bHandleDragging = (BOOL) ( nFlags & SCRWIN_THUMBDRAGGING );
bVCenter = (nFlags & SCRWIN_VCENTER) == SCRWIN_VCENTER;
bHCenter = (nFlags & SCRWIN_HCENTER) == SCRWIN_HCENTER;
bScrolling = FALSE;
// set the handlers for the scrollbars
aVScroll.SetScrollHdl( LINK(this, ScrollableWindow, ScrollHdl) );
aHScroll.SetScrollHdl( LINK(this, ScrollableWindow, ScrollHdl) );
aVScroll.SetEndScrollHdl( LINK(this, ScrollableWindow, EndScrollHdl) );
aHScroll.SetEndScrollHdl( LINK(this, ScrollableWindow, EndScrollHdl) );
nColumnPixW = nLinePixH = GetSettings().GetStyleSettings().GetScrollBarSize();
}
//-------------------------------------------------------------------
ScrollableWindow::ScrollableWindow( Window* pParent, WinBits nBits,
ScrollableWindowFlags nFlags ) :
Window( pParent, WinBits(nBits|WB_CLIPCHILDREN) ),
aVScroll( this, WinBits(WB_VSCROLL | WB_DRAG) ),
aHScroll( this, WinBits(WB_HSCROLL | WB_DRAG) ),
aCornerWin( this )
{
ImpInitialize( nFlags );
}
//-------------------------------------------------------------------
ScrollableWindow::ScrollableWindow( Window* pParent, const ResId& rId,
ScrollableWindowFlags nFlags ) :
Window( pParent, rId ),
aVScroll( this, WinBits(WB_VSCROLL | WB_DRAG) ),
aHScroll( this, WinBits(WB_HSCROLL | WB_DRAG) ),
aCornerWin( this )
{
ImpInitialize( nFlags );
}
// -----------------------------------------------------------------------
void ScrollableWindow::Command( const CommandEvent& rCEvt )
{
if ( (rCEvt.GetCommand() == COMMAND_WHEEL) ||
(rCEvt.GetCommand() == COMMAND_STARTAUTOSCROLL) ||
(rCEvt.GetCommand() == COMMAND_AUTOSCROLL) )
{
ScrollBar* pHScrBar;
ScrollBar* pVScrBar;
if ( aHScroll.IsVisible() )
pHScrBar = &aHScroll;
else
pHScrBar = NULL;
if ( aVScroll.IsVisible() )
pVScrBar = &aVScroll;
else
pVScrBar = NULL;
if ( HandleScrollCommand( rCEvt, pHScrBar, pVScrBar ) )
return;
}
Window::Command( rCEvt );
}
//-------------------------------------------------------------------
void ScrollableWindow::DataChanged( const DataChangedEvent& rDCEvt )
{
if ( (rDCEvt.GetType() == DATACHANGED_SETTINGS) &&
(rDCEvt.GetFlags() & SETTINGS_STYLE) )
{
Resize();
Invalidate();
}
Window::DataChanged( rDCEvt );
}
//-------------------------------------------------------------------
Size __EXPORT ScrollableWindow::GetOutputSizePixel() const
{
Size aSz( Window::GetOutputSizePixel() );
long nTmp = GetSettings().GetStyleSettings().GetScrollBarSize();
if ( aHScroll.IsVisible() )
aSz.Height() -= nTmp;
if ( aVScroll.IsVisible() )
aSz.Width() -= nTmp;
return aSz;
}
//-------------------------------------------------------------------
Size ScrollableWindow::GetOutputSize() const
{
return PixelToLogic( GetOutputSizePixel() );
}
//-------------------------------------------------------------------
IMPL_LINK( ScrollableWindow, EndScrollHdl, ScrollBar *, pScroll )
{
// notify the start of scrolling, if not already scrolling
if ( !bScrolling )
StartScroll(), bScrolling = TRUE;
// get the delta in logic coordinates
Size aDelta( PixelToLogic( Size( aHScroll.GetDelta(), aVScroll.GetDelta() ) ) );
// scroll the window, if this is not already done
if ( !bHandleDragging )
{
if ( pScroll == &aHScroll )
Scroll( aDelta.Width(), 0 );
else
Scroll( 0, aDelta.Height() );
}
// notify the end of scrolling
bScrolling = FALSE;
EndScroll( aDelta.Width(), aDelta.Height() );
return 0;
}
//-------------------------------------------------------------------
IMPL_LINK( ScrollableWindow, ScrollHdl, ScrollBar *, pScroll )
{
// notify the start of scrolling, if not already scrolling
if ( !bScrolling )
StartScroll(), bScrolling = TRUE;
if ( bHandleDragging )
{
// get the delta in logic coordinates
Size aDelta( PixelToLogic(
Size( aHScroll.GetDelta(), aVScroll.GetDelta() ) ) );
if ( pScroll == &aHScroll )
Scroll( aDelta.Width(), 0 );
else
Scroll( 0, aDelta.Height() );
}
return 0;
}
//-------------------------------------------------------------------
void __EXPORT ScrollableWindow::Resize()
{
// get the new output-size in pixel
Size aOutPixSz = Window::GetOutputSizePixel();
// determine the size of the output-area and if we need scrollbars
const long nScrSize = GetSettings().GetStyleSettings().GetScrollBarSize();
BOOL bVVisible = FALSE; // by default no vertical-ScrollBar
BOOL bHVisible = FALSE; // by default no horizontal-ScrollBar
BOOL bChanged; // determines if a visiblility was changed
do
{
bChanged = FALSE;
// does we need a vertical ScrollBar
if ( aOutPixSz.Width() < aTotPixSz.Width() && !bHVisible )
{ bHVisible = TRUE;
aOutPixSz.Height() -= nScrSize;
bChanged = TRUE;
}
// does we need a horizontal ScrollBar
if ( aOutPixSz.Height() < aTotPixSz.Height() && !bVVisible )
{ bVVisible = TRUE;
aOutPixSz.Width() -= nScrSize;
bChanged = TRUE;
}
}
while ( bChanged ); // until no visibility has changed
// store the old offset and map-mode
MapMode aMap( GetMapMode() );
Point aOldPixOffset( aPixOffset );
// justify (right/bottom borders should never exceed the virtual window)
Size aPixDelta;
if ( aPixOffset.X() < 0 &&
aPixOffset.X() + aTotPixSz.Width() < aOutPixSz.Width() )
aPixDelta.Width() =
aOutPixSz.Width() - ( aPixOffset.X() + aTotPixSz.Width() );
if ( aPixOffset.Y() < 0 &&
aPixOffset.Y() + aTotPixSz.Height() < aOutPixSz.Height() )
aPixDelta.Height() =
aOutPixSz.Height() - ( aPixOffset.Y() + aTotPixSz.Height() );
if ( aPixDelta.Width() || aPixDelta.Height() )
{
aPixOffset.X() += aPixDelta.Width();
aPixOffset.Y() += aPixDelta.Height();
}
// for axis without scrollbar restore the origin
if ( !bVVisible || !bHVisible )
{
aPixOffset = Point(
bHVisible
? aPixOffset.X()
: ( bHCenter
? (aOutPixSz.Width()-aTotPixSz.Width()) / 2
: 0 ),
bVVisible
? aPixOffset.Y()
: ( bVCenter
? (aOutPixSz.Height()-aTotPixSz.Height()) / 2
: 0 ) );
}
if ( bHVisible && !aHScroll.IsVisible() )
aPixOffset.X() = 0;
if ( bVVisible && !aVScroll.IsVisible() )
aPixOffset.Y() = 0;
// select the shifted map-mode
if ( aPixOffset != aOldPixOffset )
{
Window::SetMapMode( MapMode( MAP_PIXEL ) );
Window::Scroll(
aPixOffset.X() - aOldPixOffset.X(),
aPixOffset.Y() - aOldPixOffset.Y() );
SetMapMode( aMap );
}
// show or hide scrollbars
aVScroll.Show( bVVisible );
aHScroll.Show( bHVisible );
// disable painting in the corner between the scrollbars
if ( bVVisible && bHVisible )
{
aCornerWin.SetPosSizePixel(Point(aOutPixSz.Width(), aOutPixSz.Height()),
Size(nScrSize, nScrSize) );
aCornerWin.Show();
}
else
aCornerWin.Hide();
// resize scrollbars and set their ranges
if ( bHVisible )
{
aHScroll.SetPosSizePixel(
Point( 0, aOutPixSz.Height() ),
Size( aOutPixSz.Width(), nScrSize ) );
aHScroll.SetRange( Range( 0, aTotPixSz.Width() ) );
aHScroll.SetPageSize( aOutPixSz.Width() );
aHScroll.SetVisibleSize( aOutPixSz.Width() );
aHScroll.SetLineSize( nColumnPixW );
aHScroll.SetThumbPos( -aPixOffset.X() );
}
if ( bVVisible )
{
aVScroll.SetPosSizePixel(
Point( aOutPixSz.Width(), 0 ),
Size( nScrSize,aOutPixSz.Height() ) );
aVScroll.SetRange( Range( 0, aTotPixSz.Height() ) );
aVScroll.SetPageSize( aOutPixSz.Height() );
aVScroll.SetVisibleSize( aOutPixSz.Height() );
aVScroll.SetLineSize( nLinePixH );
aVScroll.SetThumbPos( -aPixOffset.Y() );
}
}
//-------------------------------------------------------------------
void __EXPORT ScrollableWindow::StartScroll()
{
}
//-------------------------------------------------------------------
void __EXPORT ScrollableWindow::EndScroll( long, long )
{
}
//-------------------------------------------------------------------
void ScrollableWindow::SetMapMode( const MapMode& rNewMapMode )
{
MapMode aMap( rNewMapMode );
aMap.SetOrigin( aMap.GetOrigin() + PixelToLogic( aPixOffset, aMap ) );
Window::SetMapMode( aMap );
}
//-------------------------------------------------------------------
MapMode ScrollableWindow::GetMapMode() const
{
MapMode aMap( Window::GetMapMode() );
aMap.SetOrigin( aMap.GetOrigin() - PixelToLogic( aPixOffset ) );
return aMap;
}
//-------------------------------------------------------------------
void ScrollableWindow::SetTotalSize( const Size& rNewSize )
{
aTotPixSz = LogicToPixel( rNewSize );
ScrollableWindow::Resize();
}
//-------------------------------------------------------------------
void ScrollableWindow::SetVisibleSize( const Size& rNewSize )
{
// get the rectangle, we wish to view
Rectangle aWish( Point(0, 0), LogicToPixel(rNewSize) );
// get maximum rectangle for us from our parent-window (subst our border!)
Rectangle aMax( Point(0, 0), GetParent()->GetOutputSizePixel() );
aMax.Left() -= ( Window::GetSizePixel().Width() -
Window::GetOutputSizePixel().Width() );
aMax.Bottom() -= (Window::GetSizePixel().Height() -
Window::GetOutputSizePixel().Height());
Size aWill( aWish.GetIntersection(aMax).GetSize() );
BOOL bHScroll = FALSE;
const long nScrSize = GetSettings().GetStyleSettings().GetScrollBarSize();
if ( aWill.Width() < aWish.GetSize().Width() )
{ bHScroll = TRUE;
aWill.Height() =
Min( aWill.Height()+nScrSize, aMax.GetSize().Height() );
}
if ( aWill.Height() < aWish.GetSize().Height() )
aWill.Width() =
Min( aWill.Width()+nScrSize, aMax.GetSize().Width() );
if ( !bHScroll && (aWill.Width() < aWish.GetSize().Width()) )
aWill.Height() =
Min( aWill.Height()+nScrSize, aMax.GetSize().Height() );
Window::SetOutputSizePixel( aWill );
}
//-------------------------------------------------------------------
BOOL ScrollableWindow::MakeVisible( const Rectangle& rTarget, BOOL bSloppy )
{
Rectangle aTarget;
Rectangle aTotRect( Point(0, 0), PixelToLogic( aTotPixSz ) );
if ( bSloppy )
{
aTarget = rTarget;
// at maximum to right border
if ( aTarget.Right() > aTotRect.Right() )
{
long nDelta = aTarget.Right() - aTotRect.Right();
aTarget.Left() -= nDelta;
aTarget.Right() -= nDelta;
// too wide?
if ( aTarget.Left() < aTotRect.Left() )
aTarget.Left() = aTotRect.Left();
}
// at maximum to bottom border
if ( aTarget.Bottom() > aTotRect.Bottom() )
{
long nDelta = aTarget.Bottom() - aTotRect.Bottom();
aTarget.Top() -= nDelta;
aTarget.Bottom() -= nDelta;
// too high?
if ( aTarget.Top() < aTotRect.Top() )
aTarget.Top() = aTotRect.Top();
}
// at maximum to left border
if ( aTarget.Left() < aTotRect.Left() )
{
long nDelta = aTarget.Left() - aTotRect.Left();
aTarget.Right() -= nDelta;
aTarget.Left() -= nDelta;
// too wide?
if ( aTarget.Right() > aTotRect.Right() )
aTarget.Right() = aTotRect.Right();
}
// at maximum to top border
if ( aTarget.Top() < aTotRect.Top() )
{
long nDelta = aTarget.Top() - aTotRect.Top();
aTarget.Bottom() -= nDelta;
aTarget.Top() -= nDelta;
// too high?
if ( aTarget.Bottom() > aTotRect.Bottom() )
aTarget.Bottom() = aTotRect.Bottom();
}
}
else
aTarget = rTarget.GetIntersection( aTotRect );
// is the area already visible?
Rectangle aVisArea( GetVisibleArea() );
if ( aVisArea.IsInside(rTarget) )
return TRUE;
// is there somewhat to scroll?
if ( aVisArea.TopLeft() != aTarget.TopLeft() )
{
Rectangle aBox( aTarget.GetUnion(aVisArea) );
long nDeltaX = ( aBox.Right() - aVisArea.Right() ) +
( aBox.Left() - aVisArea.Left() );
long nDeltaY = ( aBox.Top() - aVisArea.Top() ) +
( aBox.Bottom() - aVisArea.Bottom() );
Scroll( nDeltaX, nDeltaY );
}
// determine if the target is completely visible
return aVisArea.GetWidth() >= aTarget.GetWidth() &&
aVisArea.GetHeight() >= aTarget.GetHeight();
}
//-------------------------------------------------------------------
Rectangle ScrollableWindow::GetVisibleArea() const
{
Point aTopLeft( PixelToLogic( Point() ) );
Size aSz( GetOutputSize() );
return Rectangle( aTopLeft, aSz );
}
//-------------------------------------------------------------------
void ScrollableWindow::SetLineSize( ULONG nHorz, ULONG nVert )
{
Size aPixSz( LogicToPixel( Size(nHorz, nVert) ) );
nColumnPixW = aPixSz.Width();
nLinePixH = aPixSz.Height();
aVScroll.SetLineSize( nLinePixH );
aHScroll.SetLineSize( nColumnPixW );
}
//-------------------------------------------------------------------
void ScrollableWindow::Scroll( long nDeltaX, long nDeltaY, USHORT )
{
if ( !bScrolling )
StartScroll();
// get the delta in pixel
Size aDeltaPix( LogicToPixel( Size(nDeltaX, nDeltaY) ) );
Size aOutPixSz( GetOutputSizePixel() );
MapMode aMap( GetMapMode() );
Point aNewPixOffset( aPixOffset );
// scrolling horizontally?
if ( nDeltaX != 0 )
{
aNewPixOffset.X() -= aDeltaPix.Width();
if ( ( aOutPixSz.Width() - aNewPixOffset.X() ) > aTotPixSz.Width() )
aNewPixOffset.X() = - ( aTotPixSz.Width() - aOutPixSz.Width() );
else if ( aNewPixOffset.X() > 0 )
aNewPixOffset.X() = 0;
}
// scrolling vertically?
if ( nDeltaY != 0 )
{
aNewPixOffset.Y() -= aDeltaPix.Height();
if ( ( aOutPixSz.Height() - aNewPixOffset.Y() ) > aTotPixSz.Height() )
aNewPixOffset.Y() = - ( aTotPixSz.Height() - aOutPixSz.Height() );
else if ( aNewPixOffset.Y() > 0 )
aNewPixOffset.Y() = 0;
}
// recompute the logical scroll units
aDeltaPix.Width() = aPixOffset.X() - aNewPixOffset.X();
aDeltaPix.Height() = aPixOffset.Y() - aNewPixOffset.Y();
Size aDelta( PixelToLogic(aDeltaPix) );
nDeltaX = aDelta.Width();
nDeltaY = aDelta.Height();
aPixOffset = aNewPixOffset;
// scrolling?
if ( nDeltaX != 0 || nDeltaY != 0 )
{
Update();
// does the new area overlap the old one?
if ( Abs( (int)aDeltaPix.Height() ) < aOutPixSz.Height() ||
Abs( (int)aDeltaPix.Width() ) < aOutPixSz.Width() )
{
// scroll the overlapping area
SetMapMode( aMap );
// never scroll the scrollbars itself!
Window::Scroll(-nDeltaX, -nDeltaY,
PixelToLogic( Rectangle( Point(0, 0), aOutPixSz ) ) );
}
else
{
// repaint all
SetMapMode( aMap );
Invalidate();
}
Update();
}
if ( !bScrolling )
{
EndScroll( nDeltaX, nDeltaY );
if ( nDeltaX )
aHScroll.SetThumbPos( -aPixOffset.X() );
if ( nDeltaY )
aVScroll.SetThumbPos( -aPixOffset.Y() );
}
}
//-------------------------------------------------------------------
void ScrollableWindow::ScrollLines( long nLinesX, long nLinesY )
{
Size aDelta( PixelToLogic( Size( nColumnPixW, nLinePixH ) ) );
Scroll( aDelta.Width()*nLinesX, aDelta.Height()*nLinesY );
}
//-------------------------------------------------------------------
void ScrollableWindow::ScrollPages( long nPagesX, ULONG nOverlapX,
long nPagesY, ULONG nOverlapY )
{
Size aOutSz( GetVisibleArea().GetSize() );
Scroll( nPagesX * aOutSz.Width() + (nPagesX>0 ? 1 : -1) * nOverlapX,
nPagesY * aOutSz.Height() + (nPagesY>0 ? 1 : -1) * nOverlapY );
}