Glenn Maynard
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
#include "global.h"
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/*
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-----------------------------------------------------------------------------
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Class: ScrollBar
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Desc: See header.
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Copyright (c) 2001-2002 by the person(s) listed below. All rights reserved.
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Chris Danford
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-----------------------------------------------------------------------------
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*/
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#include "ScrollBar.h"
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#include "PrefsManager.h"
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#include "GameConstantsAndTypes.h"
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#include <math.h>
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#include "ThemeManager.h"
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ScrollBar::ScrollBar()
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{
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m_sprBackground.Load( THEME->GetPathToG("ScrollBar parts 1x3") );
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m_sprBackground.StopAnimating();
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m_sprBackground.SetState( 1 );
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this->AddChild( &m_sprBackground );
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m_sprScrollThumbPart1.Load( THEME->GetPathToG("ScrollBar thumb") );
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m_sprScrollThumbPart1.StopAnimating();
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this->AddChild( &m_sprScrollThumbPart1 );
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m_sprScrollThumbPart2.Load( THEME->GetPathToG("ScrollBar thumb") );
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m_sprScrollThumbPart2.StopAnimating();
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this->AddChild( &m_sprScrollThumbPart2 );
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m_sprTopButton.Load( THEME->GetPathToG("ScrollBar parts 1x3") );
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m_sprTopButton.StopAnimating();
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m_sprTopButton.SetState( 0 );
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this->AddChild( &m_sprTopButton );
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m_sprBottomButton.Load( THEME->GetPathToG("ScrollBar parts 1x3") );
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m_sprBottomButton.StopAnimating();
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m_sprBottomButton.SetState( 2 );
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this->AddChild( &m_sprBottomButton );
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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_sprBackground.SetZoomY( m_iBarHeight/m_sprBackground.GetUnzoomedHeight() );
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m_sprTopButton.SetY( -m_iBarHeight/2.0f );
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m_sprBottomButton.SetY( +m_iBarHeight/2.0f );
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m_sprScrollThumbPart1.SetY( 0 );
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m_sprScrollThumbPart2.SetY( 0 );
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}
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void ScrollBar::SetPercentage( float fStartPercent, float fEndPercent )
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{
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CHECKPOINT;
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const int iBarContentHeight = m_iBarHeight - int( m_sprTopButton.GetUnzoomedHeight()/2 + m_sprBottomButton.GetUnzoomedHeight()/2 );
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ASSERT( iBarContentHeight != 0 );
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CHECKPOINT;
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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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int iPart1TopY, iPart1BottomY, iPart2TopY, iPart2BottomY;
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if( fStartPercent < fEndPercent ) // we only need to one 1 thumb part
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{
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iPart1TopY = (int)SCALE( fStartPercent,0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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iPart1BottomY = (int)SCALE( fEndPercent, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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iPart2TopY = -1;
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iPart2BottomY = -1;
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}
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else // we need two thumb parts
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{
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iPart1TopY = (int)SCALE( 0.0f, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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iPart1BottomY = (int)SCALE( fEndPercent, 0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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iPart2TopY = (int)SCALE( fStartPercent,0.0f, 1.0f, -iBarContentHeight/2.0f, +iBarContentHeight/2.0f );
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iPart2BottomY = (int)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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m_sprScrollThumbPart1.StretchTo( RectI(
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(int)-m_sprScrollThumbPart1.GetUnzoomedWidth()/2,
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iPart1TopY,
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(int)+m_sprScrollThumbPart1.GetUnzoomedWidth()/2,
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iPart1BottomY
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) );
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CHECKPOINT;
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if( iPart2TopY != -1 )
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{
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m_sprScrollThumbPart2.StretchTo( RectI(
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(int)-m_sprScrollThumbPart2.GetUnzoomedWidth()/2,
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iPart2TopY,
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(int)+m_sprScrollThumbPart2.GetUnzoomedWidth()/2,
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iPart2BottomY
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) );
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}
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else
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{
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m_sprScrollThumbPart2.SetZoomY( 0 );
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}
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CHECKPOINT;
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}
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