hud_numeric.cpp

hl2 source code. Do not use it illegal.

#include "cbase.h"
#include "hud.h"
#include "hud_numeric.h"
#include "iclientmode.h"
#include <KeyValues.h>
#include <vgui/ISurface.h>
#include <vgui/IScheme.h>
#include <vgui_controls/AnimationController.h>
#include "ctype.h"

// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"

using namespace vgui;

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : *pElementName - 
//			*panelName - 
//-----------------------------------------------------------------------------
CHudNumeric::CHudNumeric( const char *pElementName, const char *panelName )
 : CHudElement( pElementName ), BaseClass( NULL, panelName )
{
	// Make sure we have the lookups built
	BuildPrintablesList();

	vgui::Panel *pParent = g_pClientMode->GetViewport();
	SetParent( pParent );

	SetActive( true );
	SetAutoDelete( false );

	m_nTextLen = 0;
	Q_memset( m_szPreviousValue, 0, sizeof( m_szPreviousValue ) );
	Q_memset( m_szLatchedValue, 0, sizeof( m_szLatchedValue ) );

	m_bDrawLabel = true;
	m_bSendPulses = true;
	m_bPulseForced = true;

	m_flRotaryTime = 0.0f;
	m_flRotaryStartTime = 0.0f;
	m_flActualCharactersPerSecond = 7.0f;
}

bool CHudNumeric::s_bPrintablesBuilt;
CUtlRBTree< int, int > CHudNumeric::m_Printables( 0, 0, DefLessFunc( int ) );

//-----------------------------------------------------------------------------
// Purpose: Builds a list of printable characters
//-----------------------------------------------------------------------------
void CHudNumeric::BuildPrintablesList( void )
{
	if ( s_bPrintablesBuilt )
		return;

	s_bPrintablesBuilt = true;
	int i;
	for ( i = 0; i < 256; i++ )
	{
		if ( isalnum( i ) )  // isprint or isgraph?
		{
			m_Printables.Insert( i );
		}
	}
}

//-----------------------------------------------------------------------------
// Purpose: Find the index of a printable character
// Input  : ch - 
// Output : int
//-----------------------------------------------------------------------------
int CHudNumeric::FindPrintableIndex( int ch )
{
	int idx = m_Printables.Find( ch );
	return idx;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : *scheme - 
//-----------------------------------------------------------------------------
void CHudNumeric::ApplySchemeSettings(IScheme *scheme)
{
	BaseClass::ApplySchemeSettings(scheme);

	m_flActualCharactersPerSecond = (float)m_flDesiredCharactersPerSecond;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Output : Returns true on success, false on failure.
//-----------------------------------------------------------------------------
bool CHudNumeric::IsRotating( void ) const
{
	if ( gpGlobals->curtime >= m_flRotaryStartTime &&
		 gpGlobals->curtime <= ( m_flRotaryStartTime + m_flRotaryTime ) )
	{
		 return true;
	}

	return false;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : frac - 
//			startchar - 
//			endchar - 
//			prevchar - 
//			nextchar - 
//			subfrac - 
//-----------------------------------------------------------------------------
void CHudNumeric::GetRotatedChar( float frac, char startchar, char endchar, char& prevchar, char& nextchar, float& subfrac )
{
	// Recast into database of printable characters
	int startidx	= FindPrintableIndex( startchar );
	int endidx		= FindPrintableIndex( endchar );

	float diff		= ( float )endidx - ( float )startidx;

	// No delta
	if ( diff == 0.0f || 
		startidx == m_Printables.InvalidIndex() ||
		endidx == m_Printables.InvalidIndex() )
	{
		prevchar	= startchar;
		nextchar	= startchar;
		subfrac		= 0.0f;

		return;
	}

	bool reverse = false;
	// Going backwards is same as forward except frac is reversed
	if ( diff < 0.0f )
	{
		reverse = true;
		frac = 1.0f - frac;
		int temp = startidx;
		startidx = endidx;
		endidx = temp;
		diff = -diff;
	}

	float	foutindex = (float)startidx;
	int		outindex;
	float   fnextindex;
	int		nextindex;

	int		maxdelta = (int)diff;

	if ( m_nRotaryMaxDelta != 0 )
	{
		maxdelta = min( m_nRotaryMaxDelta, maxdelta );
	}

	// Quantize steps
	// Map frac into maxdelta discrete intervals
	float indicesperstep = diff / (float)maxdelta;
	float fnumstepstaken = clamp( frac * (float)maxdelta, 0.0f, (float)( maxdelta  -0.001f ) );
	int numstepstaken = (int)(fnumstepstaken);

	foutindex = (float)startidx + (float)numstepstaken * indicesperstep;
	foutindex = clamp( foutindex, (float)startidx, (float)endidx );

	outindex	= ( int )foutindex;

	fnextindex = (float)startidx + (float)( numstepstaken + 1 ) * indicesperstep;
	fnextindex = clamp( fnextindex, (float)startidx, (float)endidx );

	nextindex = (int)fnextindex;

	subfrac = fnumstepstaken - (float)numstepstaken;

	if ( !m_Printables.IsValidIndex( outindex ) ||
		 !m_Printables.IsValidIndex( nextindex ) )
	{
		prevchar	= startchar;
		nextchar	= startchar;
		subfrac		= 0.0f;
		return;
	}

	if ( reverse )
	{
		subfrac = 1.0f - subfrac;
		prevchar	= m_Printables[ nextindex ];
		nextchar	= m_Printables[ outindex ];
	}
	else
	{
		prevchar	= m_Printables[ outindex ];
		nextchar	= m_Printables[ nextindex ];
	}
}	

void CHudNumeric::PaintRotatedCharacterHoriz( int x, int y, vgui::HFont& font, int prevchar, int nextchar, float frac )
{
	frac = 3 * frac * frac - 2 * frac * frac * frac;

	int abcA, abcB, abcC;
	surface()->GetCharABCwide( font, prevchar, abcA, abcB, abcC );
	// int fontTall = surface()->GetFontTall( font );

	CharRenderInfo info;
	if ( frac < 0.5f )
	{
		surface()->DrawSetTextPos( x, y );

		// Paint the right half of the prevchar still
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info ) )
		{
			// Shift tex coord and y position half way down glyph
			info.verts[0].m_Position.x = Lerp( 0.5f, info.verts[0].m_Position.x, info.verts[1].m_Position.x );
			info.verts[0].m_TexCoord.x = Lerp( 0.5f, info.verts[0].m_TexCoord.x, info.verts[1].m_TexCoord.x );
			surface()->DrawRenderCharFromInfo( info );
		}

		surface()->DrawSetTextPos( x, y );

		// Paint up to frac from left of next char
		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			// Shift tex coord and y position part way up glyph
			info.verts[1].m_Position.x = Lerp( frac, info.verts[0].m_Position.x, info.verts[1].m_Position.x );
			info.verts[1].m_TexCoord.x = Lerp( frac, info.verts[0].m_TexCoord.x, info.verts[1].m_TexCoord.x );
			surface()->DrawRenderCharFromInfo( info );
		}

		// Paint divider

		surface()->DrawSetTextPos( x, y );

		// Paint from frac to 0.5 of prevchar on the left
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info )  )
		{
			// Shift tex coord and y position half way up glyph
			vgui::Vertex_t save[2];
			
			save[0] = info.verts[0];
			save[1] = info.verts[1];

			info.verts[0].m_Position.x = Lerp( frac, save[0].m_Position.x, save[1].m_Position.x );
			//info.verts[0].m_TexCoord.x = Lerp( frac, save[0].m_TexCoord.x, save[1].m_TexCoord.x );

			info.verts[1].m_Position.x = Lerp( 0.5f, save[0].m_Position.x, save[1].m_Position.x );
			info.verts[1].m_TexCoord.x = Lerp( 0.5f, save[0].m_TexCoord.x, save[1].m_TexCoord.x );
			
			surface()->DrawRenderCharFromInfo( info );
		}
	}
	else if ( frac > 0.5f )
	{
		surface()->DrawSetTextPos( x, y );

		// Paint entire left half of next char
		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			// Shift tex coord and y position half way down glyph
			info.verts[1].m_Position.x = Lerp( 0.5f, info.verts[0].m_Position.x, info.verts[1].m_Position.x );
			info.verts[1].m_TexCoord.x = Lerp( 0.5f, info.verts[0].m_TexCoord.x, info.verts[1].m_TexCoord.x );
			surface()->DrawRenderCharFromInfo( info );
		}

		surface()->DrawSetTextPos( x, y );

		// paint a bit of the previous char at far right
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info ) )
		{
			// Shift tex coord and y position part way up glyph
			info.verts[0].m_Position.x = Lerp( frac, info.verts[0].m_Position.x, info.verts[1].m_Position.x );
			info.verts[0].m_TexCoord.x = Lerp( frac, info.verts[0].m_TexCoord.x, info.verts[1].m_TexCoord.x );
			surface()->DrawRenderCharFromInfo( info );
		}

		// Paint divider

		surface()->DrawSetTextPos( x, y );

		// Paint from 0.5 to frac of next char
		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			vgui::Vertex_t save[2];
			
			save[0] = info.verts[0];
			save[1] = info.verts[1];

			info.verts[0].m_Position.x = Lerp( 0.5f, save[0].m_Position.x, save[1].m_Position.x );
			info.verts[0].m_TexCoord.x = Lerp( 0.5f, save[0].m_TexCoord.x, save[1].m_TexCoord.x );

			info.verts[1].m_Position.x = Lerp( frac, save[0].m_Position.x, save[1].m_Position.x );
			//info.verts[1].m_TexCoord.x = Lerp( frac, save[0].m_TexCoord.x, save[1].m_TexCoord.x );
			
			surface()->DrawRenderCharFromInfo( info );
		}
	}

	x += ( abcA + abcB + abcC );
	surface()->DrawSetTextPos( x, y );
}

void CHudNumeric::PaintRotatedCharacterSpeedomter( int x, int y, vgui::HFont& font, int prevchar, int nextchar, float frac )
{
	frac = 3 * frac * frac - 2 * frac * frac * frac;

	int abcA, abcB, abcC;
	surface()->GetCharABCwide( font, prevchar, abcA, abcB, abcC );
	// int fontTall = surface()->GetFontTall( font );

	CharRenderInfo info;
	if ( frac <= 0.0f )
	{
		surface()->DrawSetTextPos( x, y );

		// Paint the whole previous char
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info ) )
		{
			surface()->DrawRenderCharFromInfo( info );
		}
	}
	else if ( frac >= 1.0f )
	{
		surface()->DrawSetTextPos( x, y );

		// Paint the whole previous char
		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			surface()->DrawRenderCharFromInfo( info );
		}
	}
	else
	{
		// Draw part of previous and part of next
		surface()->DrawSetTextPos( x, y );

		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info ) )
		{
			// Shift tex coord and y position part way up glyph
			info.verts[1].m_Position.y = Lerp( frac, info.verts[0].m_Position.y, info.verts[1].m_Position.y );
			info.verts[1].m_TexCoord.y = Lerp( frac, info.verts[0].m_TexCoord.y, info.verts[1].m_TexCoord.y );
			surface()->DrawRenderCharFromInfo( info );
		}

		// Paint divider

		surface()->DrawSetTextPos( x, y );

		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			// Shift tex coord and y position part way up glyph
			info.verts[0].m_Position.y = Lerp( frac, info.verts[0].m_Position.y, info.verts[1].m_Position.y );
			info.verts[0].m_TexCoord.y = Lerp( frac, info.verts[0].m_TexCoord.y, info.verts[1].m_TexCoord.y );
			surface()->DrawRenderCharFromInfo( info );
		}
	}

	x += ( abcA + abcB + abcC );
	surface()->DrawSetTextPos( x, y );
}

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : x - 
//			y - 
//			font - 
//			prevchar - 
//			nextchar - 
//			frac - 
//-----------------------------------------------------------------------------
void CHudNumeric::PaintRotatedCharacter( int x, int y, HFont& font, int prevchar, int nextchar, float frac )
{
	frac = SimpleSpline( frac );

	int abcA[2], abcB[2], abcC[2];
	surface()->GetCharABCwide( font, prevchar, abcA[0], abcB[0], abcC[0] );
	surface()->GetCharABCwide( font, nextchar, abcA[1], abcB[1], abcC[1] );

	int w0 = abcA[0] + abcB[0] + abcC[0];
	int w1 = abcA[1] + abcB[1] + abcC[1];

	int cellwidth = max( w0, w1 );

	int fontTall = surface()->GetFontTall( font );

	int dividery = y + clamp( Lerp( frac, 0, fontTall ), 2, fontTall - 2 );

	int xprev = x;
	int xnext = x;

	int diff = abs( abcB[0] - abcB[1] ) * 0.5f;

	if ( diff != 0 )
	{
		// Prev is wider than next, push next right a bit
		if ( w0 > w1 )
		{
			xnext += diff;
		}
		else
		{
			xprev += diff;
		}
	}

	CharRenderInfo info;
	if ( frac < 0.5f )
	{
		surface()->DrawSetTextPos( xprev, y );

		// Paint the bottom half of the prevchar still
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info ) )
		{
			// Shift tex coord and y position half way down glyph
			info.verts[0].m_Position.y = Lerp( 0.5f, info.verts[0].m_Position.y, info.verts[1].m_Position.y );
			info.verts[0].m_TexCoord.y = Lerp( 0.5f, info.verts[0].m_TexCoord.y, info.verts[1].m_TexCoord.y );
			surface()->DrawRenderCharFromInfo( info );
		}

		surface()->DrawSetTextPos( xnext, y );

		// Paint up to frac from top of prev char
		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			// Shift tex coord and y position part way up glyph
			info.verts[1].m_Position.y = Lerp( frac, info.verts[0].m_Position.y, info.verts[1].m_Position.y );
			info.verts[1].m_TexCoord.y = Lerp( frac, info.verts[0].m_TexCoord.y, info.verts[1].m_TexCoord.y );
			surface()->DrawRenderCharFromInfo( info );
		}

		// Paint divider
		if ( frac > 0.0f )
		{
			surface()->DrawSetColor( m_CharBgBorder );
			surface()->DrawLine( x - abcA[0] + 1, dividery, x + abcB[0] + abcC[0] - 1, dividery );
		}

		surface()->DrawSetTextPos( xprev, y );

		// Paint from frac to 0.5 of nextchar on the top
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info )  )
		{
			// Shift tex coord and y position half way up glyph
			vgui::Vertex_t save[2];
			
			save[0] = info.verts[0];
			save[1] = info.verts[1];

			info.verts[0].m_Position.y = Lerp( frac, save[0].m_Position.y, save[1].m_Position.y );
			//info.verts[0].m_TexCoord.y = Lerp( frac, save[0].m_TexCoord.y, save[1].m_TexCoord.y );

			info.verts[1].m_Position.y = Lerp( 0.5f, save[0].m_Position.y, save[1].m_Position.y );
			info.verts[1].m_TexCoord.y = Lerp( 0.5f, save[0].m_TexCoord.y, save[1].m_TexCoord.y );
			
			surface()->DrawRenderCharFromInfo( info );
		}
	}
	else if ( frac >= 0.5f )
	{
		surface()->DrawSetTextPos( xnext, y );

		// Paint entire top half of next char
		if ( surface()->DrawGetUnicodeCharRenderInfo( nextchar, info ) )
		{
			// Shift tex coord and y position half way down glyph
			info.verts[1].m_Position.y = Lerp( 0.5f, info.verts[0].m_Position.y, info.verts[1].m_Position.y );
			info.verts[1].m_TexCoord.y = Lerp( 0.5f, info.verts[0].m_TexCoord.y, info.verts[1].m_TexCoord.y );
			surface()->DrawRenderCharFromInfo( info );
		}

		surface()->DrawSetTextPos( xprev, y );

		// paint a bit of the previous char at the bottom
		if ( surface()->DrawGetUnicodeCharRenderInfo( prevchar, info ) )
		{
			// Shift tex coord and y position part way up glyph
			info.verts[0].m_Position.y = Lerp( frac, info.verts[0].m_Position.y, info.verts[1].m_Position.y );
			info.verts[0].m_TexCoord.y = Lerp( frac, info.verts[0].m_TexCoord.y, info.verts[1].m_TexCoord.y );
			surface()->DrawRenderCharFromInfo( info );
		}

		// Paint divider
		if ( frac < 1.0f )
		{
			surface()->DrawSetColor( m_CharBgBorder );
			surface()->DrawLine( x - abcA[0] + 1, dividery, x + abcB[0] + abcC[0] - 1, dividery );