Jason Felds
124 lines
4.3 KiB
C++
124 lines
4.3 KiB
C++
#include "global.h"
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#include "ScrollBar.h"
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#include "ThemeManager.h"
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#include "RageUtil.h"
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ScrollBar::ScrollBar()
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{
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RString sMetricsGroup = "ScrollBar";
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m_sprMiddle.Load( THEME->GetPathG(sMetricsGroup,"middle") );
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this->AddChild( m_sprMiddle );
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m_sprTop.Load( THEME->GetPathG(sMetricsGroup,"top") );
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m_sprTop->SetVertAlign( VertAlign_Bottom );
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this->AddChild( m_sprTop );
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m_sprBottom.Load( THEME->GetPathG(sMetricsGroup,"bottom") );
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m_sprBottom->SetVertAlign( VertAlign_Top );
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this->AddChild( m_sprBottom );
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m_sprScrollTickThumb.Load( THEME->GetPathG(sMetricsGroup,"TickThumb") );
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this->AddChild( m_sprScrollTickThumb );
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for( unsigned i=0; i<ARRAYLEN(m_sprScrollStretchThumb); i++ )
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{
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m_sprScrollStretchThumb[i].Load( THEME->GetPathG(sMetricsGroup,"StretchThumb") );
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this->AddChild( m_sprScrollStretchThumb[i] );
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}
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SetBarHeight( 100 );
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}
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void ScrollBar::SetBarHeight( int iHeight )
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{
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m_iBarHeight = iHeight;
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m_sprMiddle->SetZoomY( m_iBarHeight/m_sprMiddle->GetUnzoomedHeight() );
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m_sprTop->SetY( -m_iBarHeight/2.0f );
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m_sprBottom->SetY( +m_iBarHeight/2.0f );
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m_sprScrollTickThumb->SetY( 0 );
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for( unsigned i=0; i<ARRAYLEN(m_sprScrollStretchThumb); i++ )
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m_sprScrollStretchThumb[i]->SetY( 0 );
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}
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void ScrollBar::SetPercentage( float fCenterPercent, float fSizePercent )
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{
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wrap( fCenterPercent, 1.0f );
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const int iBarContentHeight = static_cast<int>(m_sprMiddle->GetZoomedHeight());
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ASSERT( iBarContentHeight != 0 );
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/* Set tick thumb */
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{
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float fY = SCALE( fCenterPercent, 0.0f, 1.0f, -iBarContentHeight/2.0f, iBarContentHeight/2.0f );
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fY = roundf( fY );
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m_sprScrollTickThumb->SetY( fY );
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}
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/* Set stretch thumb */
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float fStartPercent = fCenterPercent - fSizePercent;
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float fEndPercent = fCenterPercent + fSizePercent;
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// make sure the percent numbers are between 0 and 1
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fStartPercent = fmodf( fStartPercent+1, 1 );
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fEndPercent = fmodf( fEndPercent+1, 1 );
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CHECKPOINT;
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float fPartTopY[2], fPartBottomY[2];
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if( fStartPercent < fEndPercent ) // we only need to one 1 stretch thumb part
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{
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fPartTopY[0] = SCALE( fStartPercent,0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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fPartBottomY[0] = SCALE( fEndPercent, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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fPartTopY[1] = 0;
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fPartBottomY[1] = 0;
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}
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else // we need two stretch thumb parts
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{
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fPartTopY[0] = SCALE( 0.0f, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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fPartBottomY[0] = SCALE( fEndPercent, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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fPartTopY[1] = SCALE( fStartPercent, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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fPartBottomY[1] = SCALE( 1.0f, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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}
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CHECKPOINT;
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for( unsigned i=0; i<ARRAYLEN(m_sprScrollStretchThumb); i++ )
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{
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RectF rect(
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-m_sprScrollStretchThumb[i]->GetUnzoomedWidth()/2,
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fPartTopY[i],
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+m_sprScrollStretchThumb[i]->GetUnzoomedWidth()/2,
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fPartBottomY[i]
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);
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m_sprScrollStretchThumb[i]->StretchTo( rect );
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}
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CHECKPOINT;
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}
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/*
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* (c) 2001-2003 Chris Danford
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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