Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include <stdio.h>
#define PROTECTED_THINGS_DISABLE
#include <vgui/MouseCode.h>
#include <KeyValues.h>
#include <vgui/IBorder.h>
#include <vgui/IInput.h>
#include <vgui/ISystem.h>
#include <vgui/IScheme.h>
#include <vgui/ISurface.h>
#include <vgui/ILocalize.h>
#include <vgui_controls/Slider.h>
#include <vgui_controls/Controls.h>
#include <vgui_controls/TextImage.h>
// memdbgon must be the last include file in a .cpp file!!!
#include <tier0/memdbgon.h>
using namespace vgui;
DECLARE_BUILD_FACTORY( Slider );
static const float NOB_SIZE = 8.0f;
//-----------------------------------------------------------------------------
// Purpose: Create a slider bar with ticks underneath it
//-----------------------------------------------------------------------------
Slider::Slider(Panel *parent, const char *panelName ) : BaseClass(parent, panelName)
{
m_bIsDragOnRepositionNob = false;
_dragging = false;
_value = 0;
_range[0] = 0;
_range[1] = 0;
_buttonOffset = 0;
_sliderBorder = NULL;
_insetBorder = NULL;
m_nNumTicks = 10;
_leftCaption = NULL;
_rightCaption = NULL;
_subrange[ 0 ] = 0;
_subrange[ 1 ] = 0;
m_bUseSubRange = false;
m_bInverted = false;
SetThumbWidth( 8 );
RecomputeNobPosFromValue();
AddActionSignalTarget(this);
SetBlockDragChaining( true );
}
// This allows the slider to behave like it's larger than what's actually being drawn
//-----------------------------------------------------------------------------
// Purpose:
// Input : bEnable -
// 0 -
// 100 -
//-----------------------------------------------------------------------------
void Slider::SetSliderThumbSubRange( bool bEnable, int nMin /*= 0*/, int nMax /*= 100*/ )
{
m_bUseSubRange = bEnable;
_subrange[ 0 ] = nMin;
_subrange[ 1 ] = nMax;
}
//-----------------------------------------------------------------------------
// Purpose: Set the size of the slider bar.
// Warning less than 30 pixels tall and everything probably won't fit.
//-----------------------------------------------------------------------------
void Slider::OnSizeChanged(int wide,int tall)
{
BaseClass::OnSizeChanged(wide,tall);
RecomputeNobPosFromValue();
}
//-----------------------------------------------------------------------------
// Purpose: Set the value of the slider to one of the ticks.
//-----------------------------------------------------------------------------
void Slider::SetValue(int value, bool bTriggerChangeMessage)
{
int oldValue=_value;
if ( _range[0] < _range[1] )
{
if(value<_range[0])
{
value=_range[0];
}
if(value>_range[1])
{
value=_range[1];
}
}
else
{
if(value<_range[1])
{
value=_range[1];
}
if(value>_range[0])
{
value=_range[0];
}
}
_value = value;
RecomputeNobPosFromValue();
if (_value != oldValue && bTriggerChangeMessage)
{
SendSliderMovedMessage();
}
}
//-----------------------------------------------------------------------------
// Purpose: Return the value of the slider
//-----------------------------------------------------------------------------
int Slider::GetValue()
{
return _value;
}
//-----------------------------------------------------------------------------
// Purpose: Layout the slider before drawing it on screen.
//-----------------------------------------------------------------------------
void Slider::PerformLayout()
{
BaseClass::PerformLayout();
RecomputeNobPosFromValue();
if (_leftCaption)
{
_leftCaption->ResizeImageToContent();
}
if (_rightCaption)
{
_rightCaption->ResizeImageToContent();
}
}
//-----------------------------------------------------------------------------
// Purpose: Move the nob on the slider in response to changing its value.
//-----------------------------------------------------------------------------
void Slider::RecomputeNobPosFromValue()
{
//int wide,tall;
//GetPaintSize(wide,tall);
int x, y, wide, tall;
GetTrackRect( x, y, wide, tall );
float usevalue = _value;
int *userange = &_range[ 0 ];
if ( m_bUseSubRange )
{
userange = &_subrange[ 0 ];
usevalue = clamp( _value, _subrange[ 0 ], _subrange[ 1 ] );
}
float fwide=(float)wide;
float frange=(float)(userange[1] -userange[0]);
float fvalue=(float)(usevalue -userange[0]);
float fper = (frange != 0.0f) ? fvalue / frange : 0.0f;
if ( m_bInverted )
fper = 1.0f - fper;
float freepixels = fwide - _nobSize;
float leftpixel = (float)x;
float firstpixel = leftpixel + freepixels * fper + 0.5f;
_nobPos[0]=(int)( firstpixel );
_nobPos[1]=(int)( firstpixel + _nobSize );
int rightEdge = x + wide;
if(_nobPos[1]> rightEdge )
{
_nobPos[0]=rightEdge-((int)_nobSize);
_nobPos[1]=rightEdge;
}
Repaint();
}
//-----------------------------------------------------------------------------
// Purpose: Sync the slider's value up with the nob's position.
//-----------------------------------------------------------------------------
void Slider::RecomputeValueFromNobPos()
{
int value = EstimateValueAtPos( _nobPos[ 0 ], 0 );
SetValue( value );
}
int Slider::EstimateValueAtPos( int localMouseX, int /*localMouseY*/ )
{
int x, y, wide, tall;
GetTrackRect( x, y, wide, tall );
int *userange = &_range[ 0 ];
if ( m_bUseSubRange )
{
userange = &_subrange[ 0 ];
}
float fwide = (float)wide;
float fvalue = (float)( _value - userange[0] );
float fnob = (float)( localMouseX - x );
float freepixels = fwide - _nobSize;
// Map into reduced range
fvalue = freepixels != 0.0f ? fnob / freepixels : 0.0f;
return (int) (RemapVal( fvalue, 0.0, 1.0, userange[0], userange[1] ));
}
void Slider::SetInverted( bool bInverted )
{
m_bInverted = bInverted;
}
//-----------------------------------------------------------------------------
// Purpose: Send a message to interested parties when the slider moves
//-----------------------------------------------------------------------------
void Slider::SendSliderMovedMessage()
{
// send a changed message
KeyValues *pParams = new KeyValues("SliderMoved", "position", _value);
pParams->SetPtr( "panel", this );
PostActionSignal( pParams );
}
//-----------------------------------------------------------------------------
// Purpose: Send a message to interested parties when the user begins dragging the slider
//-----------------------------------------------------------------------------
void Slider::SendSliderDragStartMessage()
{
// send a message
KeyValues *pParams = new KeyValues("SliderDragStart", "position", _value);
pParams->SetPtr( "panel", this );
PostActionSignal( pParams );
}
//-----------------------------------------------------------------------------
// Purpose: Send a message to interested parties when the user ends dragging the slider
//-----------------------------------------------------------------------------
void Slider::SendSliderDragEndMessage()
{
// send a message
KeyValues *pParams = new KeyValues("SliderDragEnd", "position", _value);
pParams->SetPtr( "panel", this );
PostActionSignal( pParams );
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void Slider::ApplySchemeSettings(IScheme *pScheme)
{
BaseClass::ApplySchemeSettings(pScheme);
SetFgColor(GetSchemeColor("Slider.NobColor", pScheme));
// this line is useful for debugging
//SetBgColor(GetSchemeColor("0 0 0 255"));
m_TickColor = pScheme->GetColor( "Slider.TextColor", GetFgColor() );
m_TrackColor = pScheme->GetColor( "Slider.TrackColor", GetFgColor() );
#ifdef _X360
m_DepressedBgColor = GetSchemeColor("Slider.NobFocusColor", pScheme);
#endif
m_DisabledTextColor1 = pScheme->GetColor( "Slider.DisabledTextColor1", GetFgColor() );
m_DisabledTextColor2 = pScheme->GetColor( "Slider.DisabledTextColor2", GetFgColor() );
_sliderBorder = pScheme->GetBorder("ButtonBorder");
_insetBorder = pScheme->GetBorder("ButtonDepressedBorder");
if ( _leftCaption )
{
_leftCaption->SetFont(pScheme->GetFont("DefaultVerySmall", IsProportional() ));
}
if ( _rightCaption )
{
_rightCaption->SetFont(pScheme->GetFont("DefaultVerySmall", IsProportional() ));
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void Slider::GetSettings(KeyValues *outResourceData)
{
BaseClass::GetSettings(outResourceData);
char buf[256];
if (_leftCaption)
{
_leftCaption->GetUnlocalizedText(buf, sizeof(buf));
outResourceData->SetString("leftText", buf);
}
if (_rightCaption)
{
_rightCaption->GetUnlocalizedText(buf, sizeof(buf));
outResourceData->SetString("rightText", buf);
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void Slider::ApplySettings(KeyValues *inResourceData)
{
BaseClass::ApplySettings(inResourceData);
const char *left = inResourceData->GetString("leftText", NULL);
const char *right = inResourceData->GetString("rightText", NULL);
int thumbWidth = inResourceData->GetInt("thumbwidth", 0);
if (thumbWidth != 0)
{
SetThumbWidth(thumbWidth);
}
SetTickCaptions(left, right);
int nNumTicks = inResourceData->GetInt( "numTicks", -1 );
if ( nNumTicks >= 0 )
{
SetNumTicks( nNumTicks );
}
int nCurrentRange[2];
GetRange( nCurrentRange[0], nCurrentRange[1] );
KeyValues *pRangeMin = inResourceData->FindKey( "rangeMin", false );
KeyValues *pRangeMax = inResourceData->FindKey( "rangeMax", false );
bool bDoClamp = false;
if ( pRangeMin )
{
_range[0] = inResourceData->GetInt( "rangeMin" );
bDoClamp = true;
}
if ( pRangeMax )
{
_range[1] = inResourceData->GetInt( "rangeMax" );
bDoClamp = true;
}
if ( bDoClamp )
{
ClampRange();
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
const char *Slider::GetDescription()
{
static char buf[1024];
Q_snprintf(buf, sizeof(buf), "%s, string leftText, string rightText", BaseClass::GetDescription());
return buf;
}
//-----------------------------------------------------------------------------
// Purpose: Get the rectangle to draw the slider track in.
//-----------------------------------------------------------------------------
void Slider::GetTrackRect( int& x, int& y, int& w, int& h )
{
int wide, tall;
GetPaintSize( wide, tall );
x = 0;
y = 8;
w = wide - (int)_nobSize;
h = 4;
}
//-----------------------------------------------------------------------------
// Purpose: Draw everything on screen
//-----------------------------------------------------------------------------
void Slider::Paint()
{
DrawTicks();
DrawTickLabels();
// Draw nob last so it draws over ticks.
DrawNob();
}
//-----------------------------------------------------------------------------
// Purpose: Draw the ticks below the slider.
//-----------------------------------------------------------------------------
void Slider::DrawTicks()
{
int x, y;
int wide,tall;
GetTrackRect( x, y, wide, tall );
// Figure out how to draw the ticks
// GetPaintSize( wide, tall );
float fwide = (float)wide;
float freepixels = fwide - _nobSize;
float leftpixel = _nobSize / 2.0f;
float pixelspertick = freepixels / ( m_nNumTicks );
y += (int)_nobSize;
int tickHeight = 5;
if (IsEnabled())
{
surface()->DrawSetColor( m_TickColor ); //vgui::Color( 127, 140, 127, 255 ) );
for ( int i = 0; i <= m_nNumTicks; i++ )
{
int xpos = (int)( leftpixel + i * pixelspertick );
surface()->DrawFilledRect( xpos, y, xpos + 1, y + tickHeight );
}
}
else
{
surface()->DrawSetColor( m_DisabledTextColor1 ); //vgui::Color( 127, 140, 127, 255 ) );
for ( int i = 0; i <= m_nNumTicks; i++ )
{
int xpos = (int)( leftpixel + i * pixelspertick );
surface()->DrawFilledRect( xpos+1, y+1, xpos + 2, y + tickHeight + 1 );
}
surface()->DrawSetColor( m_DisabledTextColor2 ); //vgui::Color( 127, 140, 127, 255 ) );
for ( int i = 0; i <= m_nNumTicks; i++ )
{
int xpos = (int)( leftpixel + i * pixelspertick );
surface()->DrawFilledRect( xpos, y, xpos + 1, y + tickHeight );
}
}
}
//-----------------------------------------------------------------------------
// Purpose: Draw Tick labels under the ticks.
//-----------------------------------------------------------------------------
void Slider::DrawTickLabels()
{
int x, y;
int wide,tall;
GetTrackRect( x, y, wide, tall );
// Figure out how to draw the ticks
// GetPaintSize( wide, tall );
y += (int)NOB_SIZE + 4;
// Draw Start and end range values
if (IsEnabled())
surface()->DrawSetTextColor( m_TickColor ); //vgui::Color( 127, 140, 127, 255 ) );
else
surface()->DrawSetTextColor( m_DisabledTextColor1 ); //vgui::Color( 127, 140, 127, 255 ) );
if ( _leftCaption != NULL )
{
_leftCaption->SetPos(0, y);
if (IsEnabled())
{
_leftCaption->SetColor( m_TickColor );
}
else
{
_leftCaption->SetColor( m_DisabledTextColor1 );
}
_leftCaption->Paint();
}
if ( _rightCaption != NULL)
{
int rwide, rtall;
_rightCaption->GetSize(rwide, rtall);
_rightCaption->SetPos((int)(wide - rwide) , y);
if (IsEnabled())
{
_rightCaption->SetColor( m_TickColor );
}
else
{
_rightCaption->SetColor( m_DisabledTextColor1 );
}
_rightCaption->Paint();
}
}
//-----------------------------------------------------------------------------
// Purpose: Draw the nob part of the slider.
//-----------------------------------------------------------------------------
void Slider::DrawNob()
{
// horizontal nob
int x, y;
int wide,tall;
GetTrackRect( x, y, wide, tall );
Color col = GetFgColor();
#ifdef _X360
if(HasFocus())
{
col = m_DepressedBgColor;
}
#endif
surface()->DrawSetColor(col);
int nobheight = 16;
surface()->DrawFilledRect(
_nobPos[0],
y + tall / 2 - nobheight / 2,
_nobPos[1],
y + tall / 2 + nobheight / 2);
// border
if (_sliderBorder)
{
_sliderBorder->Paint(
_nobPos[0],
y + tall / 2 - nobheight / 2,
_nobPos[1],
y + tall / 2 + nobheight / 2);
}
}
//-----------------------------------------------------------------------------
// Purpose: Set the text labels of the Start and end ticks.
//-----------------------------------------------------------------------------
void Slider::SetTickCaptions( const char *left, const char *right )
{
if (left)
{
if (_leftCaption)
{
_leftCaption->SetText(left);
}
else
{
_leftCaption = new TextImage(left);
}
}
if (right)
{
if (_rightCaption)
{
_rightCaption->SetText(right);
}
else
{
_rightCaption = new TextImage(right);
}
}
InvalidateLayout();
}
//-----------------------------------------------------------------------------
// Purpose: Set the text labels of the Start and end ticks.
//-----------------------------------------------------------------------------
void Slider::SetTickCaptions( const wchar_t *left, const wchar_t *right )
{
if (left)
{
if (_leftCaption)
{
_leftCaption->SetText(left);
}
else
{
_leftCaption = new TextImage(left);
}
}
if (right)
{
if (_rightCaption)
{
_rightCaption->SetText(right);
}
else
{
_rightCaption = new TextImage(right);
}
}
InvalidateLayout();
}
//-----------------------------------------------------------------------------
// Purpose: Draw the slider track
//-----------------------------------------------------------------------------
void Slider::PaintBackground()
{
BaseClass::PaintBackground();
int x, y;
int wide,tall;
GetTrackRect( x, y, wide, tall );
surface()->DrawSetColor( m_TrackColor );
surface()->DrawFilledRect( x, y, x + wide, y + tall );
if (_insetBorder)
{
_insetBorder->Paint( x, y, x + wide, y + tall );
}
}
//-----------------------------------------------------------------------------
// Purpose: Set the range of the slider.
//-----------------------------------------------------------------------------
void Slider::SetRange(int min,int max)
{
_range[0]=min;
_range[1]=max;
ClampRange();
}
//-----------------------------------------------------------------------------
// Purpose: Sanity check and clamp the range if necessary.
//-----------------------------------------------------------------------------
void Slider::ClampRange()
{
if ( _range[0] < _range[1] )
{
if(_value<_range[0])
{
SetValue( _range[0], false );
}
else if( _value>_range[1])
{
SetValue( _range[1], false );
}
}
else
{
if(_value<_range[1])
{
SetValue( _range[1], false );
}
else if( _value>_range[0])
{
SetValue( _range[0], false );
}
}
}
//-----------------------------------------------------------------------------
// Purpose: Get the max and min values of the slider
//-----------------------------------------------------------------------------
void Slider::GetRange(int& min,int& max)
{
min=_range[0];
max=_range[1];
}
//-----------------------------------------------------------------------------
// Purpose: Respond when the cursor is moved in our window if we are clicking
// and dragging.
//-----------------------------------------------------------------------------
void Slider::OnCursorMoved(int x,int y)
{
if(!_dragging)
{
return;
}
// input()->GetCursorPos(x,y);
input()->GetCursorPosition( x, y );
ScreenToLocal(x,y);
// int wide,tall;
// GetPaintSize(wide,tall);
int _x, _y, wide, tall;
GetTrackRect( _x, _y, wide, tall );
_nobPos[0]=_nobDragStartPos[0]+(x-_dragStartPos[0]);
_nobPos[1]=_nobDragStartPos[1]+(x-_dragStartPos[0]);
int rightEdge = _x +wide;
int unclamped = _nobPos[ 0 ];
if(_nobPos[1]>rightEdge)
{
_nobPos[0]=rightEdge-(_nobPos[1]-_nobPos[0]);
_nobPos[1]=rightEdge;
}
if(_nobPos[0]<_x)
{
int offset = _x - _nobPos[0];
_nobPos[1]=_nobPos[1]-offset;
_nobPos[0]=0;
}
int value = EstimateValueAtPos( unclamped, 0 );
SetValue( value );
// RecomputeValueFromNobPos();
Repaint();
SendSliderMovedMessage();
}
//-----------------------------------------------------------------------------
// Purpose: If you click on the slider outside of the nob, the nob jumps
// to the click position, and if this setting is enabled, the nob
// is then draggable from the new position until the mouse is released
// Input : state -
//-----------------------------------------------------------------------------
void Slider::SetDragOnRepositionNob( bool state )
{
m_bIsDragOnRepositionNob = state;
}
bool Slider::IsDragOnRepositionNob() const
{
return m_bIsDragOnRepositionNob;
}
bool Slider::IsDragged( void ) const
{
return _dragging;
}
//-----------------------------------------------------------------------------
// Purpose: Respond to mouse presses. Trigger Record staring positon.
//-----------------------------------------------------------------------------
void Slider::OnMousePressed(MouseCode code)
{
int x,y;
if (!IsEnabled())
return;
// input()->GetCursorPos(x,y);
input()->GetCursorPosition( x, y );
ScreenToLocal(x,y);
RequestFocus();
bool startdragging = false, bPostDragStartSignal = false;
if ((x >= _nobPos[0]) && (x < _nobPos[1]))
{
startdragging = true;
bPostDragStartSignal = true;
}
else
{
// we clicked elsewhere on the slider; move the nob to that position
int min, max;
GetRange(min, max);
if ( m_bUseSubRange )
{
min = _subrange[ 0 ];
max = _subrange[ 1 ];
}
// int wide = GetWide();
int _x, _y, wide, tall;
GetTrackRect( _x, _y, wide, tall );
if ( wide > 0 )
{
float frange = ( float )( max - min );
float clickFrac = clamp( ( float )( x - _x ) / (float)( wide - 1 ), 0.0f, 1.0f );
float value = (float)min + clickFrac * frange;
startdragging = IsDragOnRepositionNob();
if ( startdragging )
{
_dragging = true; // Required when as
SendSliderDragStartMessage();
}
SetValue( ( int )( value + 0.5f ) );
}
}
if ( startdragging )
{
// drag the nob
_dragging = true;
input()->SetMouseCapture(GetVPanel());
_nobDragStartPos[0] = _nobPos[0];
_nobDragStartPos[1] = _nobPos[1];
_dragStartPos[0] = x;
_dragStartPos[1] = y;
}
if ( bPostDragStartSignal )
SendSliderDragStartMessage();
}
//-----------------------------------------------------------------------------
// Purpose: Just handle double presses like mouse presses
//-----------------------------------------------------------------------------
void Slider::OnMouseDoublePressed(MouseCode code)
{
OnMousePressed(code);
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
#ifdef _X360
void Slider::OnKeyCodePressed(KeyCode code)
{
switch ( GetBaseButtonCode( code ) )
{
case KEY_XBUTTON_LEFT:
case KEY_XSTICK1_LEFT:
case KEY_XSTICK2_LEFT:
SetValue(GetValue() - 1);
break;
case KEY_XBUTTON_RIGHT:
case KEY_XSTICK1_RIGHT:
case KEY_XSTICK2_RIGHT:
SetValue(GetValue() + 1);
break;
default:
BaseClass::OnKeyCodePressed(code);
break;
}
}
#endif
//-----------------------------------------------------------------------------
// Purpose: Handle key presses
//-----------------------------------------------------------------------------
void Slider::OnKeyCodeTyped(KeyCode code)
{
switch (code)
{
// for now left and right arrows just open or close submenus if they are there.
case KEY_LEFT:
case KEY_DOWN:
{
int val = GetValue();
SetValue(val-1);
break;
}
case KEY_RIGHT:
case KEY_UP:
{
int val = GetValue();
SetValue(val+1);
break;
}
case KEY_PAGEDOWN:
{
int min, max;
GetRange(min, max);
float range = (float) max-min;
float pertick = range/m_nNumTicks;
int val = GetValue();
SetValue(val - (int) pertick);
break;
}
case KEY_PAGEUP:
{
int min, max;
GetRange(min, max);
float range = (float) max-min;
float pertick = range/m_nNumTicks;
int val = GetValue();
SetValue(val + (int) pertick);
break;
}
case KEY_HOME:
{
int min, max;
GetRange(min, max);
SetValue(min);
break;
}
case KEY_END:
{
int min, max;
GetRange(min, max);
SetValue(max);
break;
}
default:
BaseClass::OnKeyCodeTyped(code);
break;
}
}
//-----------------------------------------------------------------------------
// Purpose: Stop dragging when the mouse is released.
//-----------------------------------------------------------------------------
void Slider::OnMouseReleased(MouseCode code)
{
if ( _dragging )
{
_dragging=false;
input()->SetMouseCapture(null);
}
if ( IsEnabled() )
{
SendSliderDragEndMessage();
}
}
//-----------------------------------------------------------------------------
// Purpose: Get the nob's position (the ends of each side of the nob)
//-----------------------------------------------------------------------------
void Slider::GetNobPos(int& min, int& max)
{
min=_nobPos[0];
max=_nobPos[1];
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void Slider::SetButtonOffset(int buttonOffset)
{
_buttonOffset=buttonOffset;
}
void Slider::SetThumbWidth( int width )
{
_nobSize = (float)width;
}
//-----------------------------------------------------------------------------
// Purpose: Set the number of ticks that appear under the slider.
//-----------------------------------------------------------------------------
void Slider::SetNumTicks( int ticks )
{
m_nNumTicks = ticks;
}