1 files changed, 317 insertions, 0 deletions
diff --git a/game/client/game_controls/slideshowpanel.cpp b/game/client/game_controls/slideshowpanel.cpp
new file mode 100644
index 0000000..8267e7a
--- /dev/null
+++ b/game/client/game_controls/slideshowpanel.cpp
@@ -0,0 +1,317 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+//=======================================================================================//
+
+#include "cbase.h"
+#include "game_controls/slideshowpanel.h"
+#include "vgui/IVGui.h"
+#include "filesystem.h"
+
+//-----------------------------------------------------------------------------
+
+using namespace vgui;
+
+//-----------------------------------------------------------------------------
+
+DECLARE_BUILD_FACTORY( CCrossfadableImagePanel );
+DECLARE_BUILD_FACTORY( CSlideshowPanel );
+
+//-----------------------------------------------------------------------------
+
+CCrossfadableImagePanel::CCrossfadableImagePanel( Panel* pParent, const char *pName )
+:	EditablePanel( pParent, pName ),
+	m_iSrcImg( 0 ),
+	m_flBlend( 0.0f ),
+	m_flBlendTime( 0.0f ),
+	m_flStartBlendTime( 0.0f ),
+	m_bBlending( false )
+{
+	m_pImages[ 0 ] = new ImagePanel( this, "Image0" );
+	m_pImages[ 1 ] = new ImagePanel( this, "Image1" );
+
+	ivgui()->AddTickSignal( GetVPanel(), 10 );
+}
+
+CCrossfadableImagePanel::~CCrossfadableImagePanel()
+{
+	ivgui()->RemoveTickSignal( GetVPanel() );
+}
+
+
+void CCrossfadableImagePanel::ApplySettings( KeyValues *pInResourceData )
+{
+	BaseClass::ApplySettings( pInResourceData );
+}
+
+void CCrossfadableImagePanel::ApplySchemeSettings( IScheme *pScheme )
+{
+	BaseClass::ApplySchemeSettings( pScheme );
+
+	SrcImg()->SetTileImage( false );
+	DstImg()->SetTileImage( false );
+}
+
+void CCrossfadableImagePanel::PerformLayout()
+{
+	BaseClass::PerformLayout();
+
+	for ( int i = 0; i < 2; ++i )
+	{
+		m_pImages[ i ]->SetBounds( 0, 0, GetWide(), GetTall() );
+		m_pImages[ i ]->SetVisible( true );
+	}
+}
+
+// Helper macro to perform a call on both images
+#define CALL_FUNC_ON_BOTH_IMAGES( _call )	\
+	AssertMsg( m_pImages[ 0 ], "m_pImages[ 0 ] is NULL!" ); \
+	AssertMsg( m_pImages[ 1 ], "m_pImages[ 1 ] is NULL!" ); \
+	m_pImages[0]->_call; \
+	m_pImages[1]->_call;
+
+void CCrossfadableImagePanel::SetShouldScaleImage( bool bState )
+{
+	CALL_FUNC_ON_BOTH_IMAGES( SetShouldScaleImage( bState ) );
+}
+
+void CCrossfadableImagePanel::SetScaleAmount( float flScale )
+{
+	CALL_FUNC_ON_BOTH_IMAGES( SetScaleAmount( flScale ) );
+}
+
+void CCrossfadableImagePanel::SetFillColor( Color c )
+{
+	CALL_FUNC_ON_BOTH_IMAGES( SetFillColor( c ) );
+}
+
+void CCrossfadableImagePanel::SetDrawColor( Color clrDrawColor )
+{
+	CALL_FUNC_ON_BOTH_IMAGES( SetDrawColor( clrDrawColor ) );
+}
+
+void CCrossfadableImagePanel::InstallMouseHandler( Panel *pHandler )
+{
+	CALL_FUNC_ON_BOTH_IMAGES( InstallMouseHandler( pHandler ) );
+}
+
+IImage *CCrossfadableImagePanel::GetImage()
+{
+	return SrcImg()->GetImage();
+}
+
+const char *CCrossfadableImagePanel::GetImageName()
+{
+	return SrcImg()->GetImageName();
+}
+
+float CCrossfadableImagePanel::GetScaleAmount()
+{
+	return SrcImg()->GetScaleAmount();
+}
+
+bool CCrossfadableImagePanel::GetShouldScaleImage()
+{
+	return SrcImg()->GetShouldScaleImage();
+}
+
+Color CCrossfadableImagePanel::GetFillColor()
+{
+	return SrcImg()->GetFillColor();
+}
+
+Color CCrossfadableImagePanel::GetDrawColor()
+{
+	return SrcImg()->GetDrawColor();
+}
+
+void CCrossfadableImagePanel::SetImage( IImage *pImage, float flBlendTime/*=0.0f*/ )
+{
+	DstImg()->SetImage( pImage );
+	SetupImageBlend( flBlendTime );
+}
+
+void CCrossfadableImagePanel::SetImage( const char *pImageName, float flBlendTime/*=0.0f*/ )
+{
+	DstImg()->SetImage( pImageName );
+	SetupImageBlend( flBlendTime );
+}
+
+void CCrossfadableImagePanel::SetupImageBlend( float flBlendTime )
+{
+	m_bBlending = true;
+	m_flBlendTime = flBlendTime;
+	m_flStartBlendTime = gpGlobals->realtime;
+	m_flBlend = 0.0f;
+}
+
+void CCrossfadableImagePanel::OnSizeChanged( int nWide, int nTall )
+{
+	m_pImages[ 0 ]->SetSize( nWide, nTall );
+	m_pImages[ 1 ]->SetSize( nWide, nTall );
+}
+
+void CCrossfadableImagePanel::OnTick()
+{
+	if ( m_bBlending )
+	{
+		// Compute current blend value
+		if ( m_flBlendTime == 0.0f )
+		{
+			m_flBlend = 1.0f;
+		}
+		else
+		{
+			float t = clamp( ( gpGlobals->realtime - m_flStartBlendTime ) / m_flBlendTime, 0.0f, 1.0f );
+			m_flBlend = clamp( t * t * (3 - 2*t), 0.0f, 1.0f );	// S-curve
+		}
+
+		// Set alpha channel on source image
+		Color clrDraw;
+		clrDraw = SrcImg()->GetDrawColor();
+		clrDraw[ 3 ] = ( int )( 255 * ( 1 - m_flBlend ) );
+		SrcImg()->SetDrawColor( clrDraw );
+
+		// Set alpha channel on destination image
+		clrDraw = DstImg()->GetDrawColor();
+		clrDraw[ 3 ] = ( int )( 255 * m_flBlend );
+		DstImg()->SetDrawColor( clrDraw );
+
+		// If we're done, don't blend next think
+		if ( m_flBlend >= 1.0f )
+		{
+			m_bBlending = false;
+			m_iSrcImg = !m_iSrcImg;
+			m_flBlend = 0.0f;
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+
+CSlideshowPanel::CSlideshowPanel( Panel *pParent, const char *pName )
+:	EditablePanel( pParent, pName ),
+	m_iCurImg( 0 ),
+	m_flInterval( 3.0f ),
+	m_flTransitionLength( 0.5f )
+{
+	m_pImagePanel = new CCrossfadableImagePanel( this, "CrossfadableImage" );
+
+	// Setup the first transition time
+	UpdateNextTransitionTime();
+
+	// Add tick signal
+	ivgui()->AddTickSignal( GetVPanel(), 10 );
+}
+
+CSlideshowPanel::~CSlideshowPanel()
+{
+	// Remove tick signal
+	ivgui()->RemoveTickSignal( GetVPanel() );
+}
+
+void CSlideshowPanel::SetInterval( float flInterval )
+{
+	m_flInterval = flInterval;
+	UpdateNextTransitionTime();
+}
+
+void CSlideshowPanel::SetTransitionTime( float flTransitionLength )
+{
+	m_flTransitionLength = flTransitionLength;
+	UpdateNextTransitionTime();
+}
+
+void CSlideshowPanel::UpdateNextTransitionTime()
+{
+	m_flNextTransitionTime = gpGlobals->realtime + m_flInterval;
+}
+
+void CSlideshowPanel::AddImage( const char *pImageName )
+{
+	if ( pImageName && strlen( pImageName ) > 0 )
+	{
+		AddImage( scheme()->GetImage( pImageName, m_pImagePanel->GetShouldScaleImage() ) );
+	}
+}
+
+void CSlideshowPanel::AddImage( IImage *pImage )
+{
+	// Cache a pointer to the image
+	m_vecImages.AddToTail( pImage );
+
+	if ( m_vecImages.Count() == 1 )
+	{
+		GetImagePanel()->SetImage( pImage );
+	}
+}
+
+void CSlideshowPanel::FillWithImages( const char *pBasePath )
+{
+	int i = 0;
+	while ( 1 )
+	{
+		CFmtStr fmtImagePath( "materials/vgui/%s%i.vmt", pBasePath, i );
+		V_FixDoubleSlashes( fmtImagePath.Access() );
+		if ( !g_pFullFileSystem->FileExists( fmtImagePath.Access() ) )
+			break;
+		
+		fmtImagePath.sprintf( "%s%i.vmt", pBasePath, i );
+		AddImage( fmtImagePath.Access() );
+
+		++i;
+	}
+}
+
+void CSlideshowPanel::ApplySettings( KeyValues *pInResourceData )
+{
+	BaseClass::ApplySettings( pInResourceData );
+
+	int iDefaultImage = pInResourceData->GetInt( "default_index", 0 ); 
+
+	int i = 0;
+	while ( 1 )
+	{
+		CFmtStr fmtImageKeyName( "image_%i", i );
+		const char *pImagePath = pInResourceData->GetString( fmtImageKeyName.Access(), NULL );
+		if ( !pImagePath )
+			break;
+
+		AddImage( pImagePath );
+
+		if ( iDefaultImage == i )
+		{
+			GetImagePanel()->SetImage( pImagePath );
+		}
+
+		++i;
+	}
+
+	GetImagePanel()->SetSize(
+		XRES( pInResourceData->GetInt( "wide" ) ),
+		YRES( pInResourceData->GetInt( "tall" ) )
+	);
+
+	GetImagePanel()->SetShouldScaleImage( pInResourceData->GetBool( "scaleImage" ) );
+	GetImagePanel()->SetScaleAmount( pInResourceData->GetFloat( "scaleAmount" ) );
+}
+
+void CSlideshowPanel::OnSizeChanged( int nWide, int nTall )
+{
+	GetImagePanel()->SetSize( nWide, nTall );
+}
+
+void CSlideshowPanel::OnTick()
+{
+	if ( GetImageCount() > 1 && gpGlobals->realtime >= m_flNextTransitionTime )
+	{
+		// Iterate to next image
+		m_iCurImg = ( m_iCurImg + 1 ) % GetImageCount();
+
+		// Setup new image
+		GetImagePanel()->SetImage( m_vecImages[ m_iCurImg ], m_flTransitionLength );
+
+		// Set transition time to be the end of the blend
+		m_flNextTransitionTime = gpGlobals->realtime + m_flInterval;
+	}
+}
+