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nillerusr
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// CPolygonButton.cpp
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// Copyright (c) 2006 Turtle Rock Studios, Inc.
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#include "cbase.h"
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#include "vgui/polygonbutton.h"
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#include "keyvalues.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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//--------------------------------------------------------------------------------------------------------
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CPolygonButton::CPolygonButton( vgui::Panel *parent, const char *panelName )
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: vgui::Button( parent, panelName, L"" )
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{
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m_unscaledHotspotPoints.RemoveAll();
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m_unscaledVisibleHotspotPoints.RemoveAll();
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m_hotspotPoints = NULL;
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m_visibleHotspotPoints = NULL;
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m_numHotspotPoints = 0;
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m_numVisibleHotspotPoints = 0;
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m_nWhiteMaterial = vgui::surface()->CreateNewTextureID();
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vgui::surface()->DrawSetTextureFile( m_nWhiteMaterial, "vgui/white" , true, false );
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}
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//--------------------------------------------------------------------------------------------------------
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void CPolygonButton::ApplySettings( KeyValues *data )
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{
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BaseClass::ApplySettings( data );
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// Re-read hotspot data from disk
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UpdateHotspots( data );
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}
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//--------------------------------------------------------------------------------------------------------
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void CPolygonButton::UpdateHotspots( KeyValues *data )
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{
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// clear out our old hotspot
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if ( m_hotspotPoints )
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{
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delete[] m_hotspotPoints;
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m_hotspotPoints = NULL;
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m_numHotspotPoints = 0;
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}
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if ( m_visibleHotspotPoints )
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{
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delete[] m_visibleHotspotPoints;
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m_visibleHotspotPoints = NULL;
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m_numVisibleHotspotPoints = 0;
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}
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m_unscaledHotspotPoints.RemoveAll();
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m_unscaledVisibleHotspotPoints.RemoveAll();
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// read in a new one
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KeyValues *points = data->FindKey( "Hotspot", false );
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if ( points )
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{
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for ( KeyValues *value = points->GetFirstValue(); value; value = value->GetNextValue() )
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{
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const char *str = value->GetString();
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float x, y;
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if ( 2 == sscanf( str, "%f %f", &x, &y ) )
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{
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m_unscaledHotspotPoints.AddToTail( Vector2D( x, y ) );
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}
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}
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}
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points = data->FindKey( "VisibleHotspot", false );
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if ( !points )
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{
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points = data->FindKey( "Hotspot", false );
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}
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if ( points )
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{
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for ( KeyValues *value = points->GetFirstValue(); value; value = value->GetNextValue() )
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{
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const char *str = value->GetString();
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float x, y;
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if ( 2 == sscanf( str, "%f %f", &x, &y ) )
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{
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m_unscaledVisibleHotspotPoints.AddToTail( Vector2D( x, y ) );
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}
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}
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}
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}
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//--------------------------------------------------------------------------------------------------------
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/**
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* Clip out cursor positions inside our overall rectangle that are outside our hotspot.
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*/
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vgui::VPANEL CPolygonButton::IsWithinTraverse( int x, int y, bool traversePopups )
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{
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if ( m_numHotspotPoints < 3 )
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{
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return NULL;
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}
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vgui::VPANEL within = BaseClass::IsWithinTraverse( x, y, traversePopups );
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if ( within == GetVPanel() )
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{
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int wide, tall;
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GetSize( wide, tall );
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ScreenToLocal( x, y );
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bool inside = true;
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for ( int i=0; i<m_numHotspotPoints; ++i )
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{
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const Vector2D& pos1 = (i==0)?m_hotspotPoints[m_numHotspotPoints-1].m_Position:m_hotspotPoints[i-1].m_Position;
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const Vector2D& pos2 = m_hotspotPoints[i].m_Position;
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Vector p1( pos1.x - x, pos1.y - y, 0 );
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Vector p2( pos2.x - x, pos2.y - y, 0 );
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Vector out = p1.Cross( p2 );
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if ( out.z < 0 )
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{
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inside = false;
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}
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}
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if ( !inside )
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{
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within = NULL;
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}
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}
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return within;
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}
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//--------------------------------------------------------------------------------------------------------
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/**
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* Perform the standard layout, and scale our hotspot points - they are specified as a 0..1 percentage
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* of the button's full size.
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*/
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void CPolygonButton::PerformLayout( void )
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{
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int wide, tall;
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GetSize( wide, tall );
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if ( m_hotspotPoints )
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{
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delete[] m_hotspotPoints;
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m_hotspotPoints = NULL;
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m_numHotspotPoints = 0;
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}
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if ( m_visibleHotspotPoints )
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{
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delete[] m_visibleHotspotPoints;
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m_visibleHotspotPoints = NULL;
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m_numVisibleHotspotPoints = 0;
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}
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// generate scaled points
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m_numHotspotPoints = m_unscaledHotspotPoints.Count();
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if ( m_numHotspotPoints )
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{
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m_hotspotPoints = new vgui::Vertex_t[ m_numHotspotPoints ];
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for ( int i=0; i<m_numHotspotPoints; ++i )
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{
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float x = m_unscaledHotspotPoints[i].x * wide;
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float y = m_unscaledHotspotPoints[i].y * tall;
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m_hotspotPoints[i].Init( Vector2D( x, y ), m_unscaledHotspotPoints[i] );
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}
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}
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// track our visible extent
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m_hotspotMins.Init( wide, tall );
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m_hotspotMaxs.Init( 0, 0 );
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m_numVisibleHotspotPoints = m_unscaledVisibleHotspotPoints.Count();
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if ( m_numVisibleHotspotPoints )
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{
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m_visibleHotspotPoints = new vgui::Vertex_t[ m_numVisibleHotspotPoints ];
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for ( int i=0; i<m_numVisibleHotspotPoints; ++i )
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{
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float x = m_unscaledVisibleHotspotPoints[i].x * wide;
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float y = m_unscaledVisibleHotspotPoints[i].y * tall;
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m_visibleHotspotPoints[i].Init( Vector2D( x, y ), m_unscaledVisibleHotspotPoints[i] );
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m_hotspotMins.x = MIN( x, m_hotspotMins.x );
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m_hotspotMins.y = MIN( y, m_hotspotMins.y );
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m_hotspotMaxs.x = MAX( x, m_hotspotMaxs.x );
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m_hotspotMaxs.y = MAX( y, m_hotspotMaxs.y );
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}
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}
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BaseClass::PerformLayout();
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}
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//--------------------------------------------------------------------------------------------------------
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/**
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* Center the text in the extent that encompasses our hotspot.
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* TODO: allow the res file and/or the individual menu to specify a different center for text.
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*/
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void CPolygonButton::ComputeAlignment( int &tx0, int &ty0, int &tx1, int &ty1 )
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{
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Vector2D center( (m_hotspotMins + m_hotspotMaxs) * 0.5f );
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BaseClass::ComputeAlignment( tx0, ty0, tx1, ty1 );
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int textWide, textTall;
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textWide = tx1 - tx0;
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textTall = ty1 - ty0;
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tx0 = center.x - textWide/2;
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ty0 = center.y - textTall/2;
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tx1 = tx0 + textWide;
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ty1 = ty0 + textTall;
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}
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//--------------------------------------------------------------------------------------------------------
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/**
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* Paints the polygonal background
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*/
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void CPolygonButton::PaintBackground( void )
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{
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Color c = GetButtonBgColor();
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vgui::surface()->DrawSetColor( c );
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vgui::surface()->DrawSetTexture( m_nWhiteMaterial );
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vgui::surface()->DrawTexturedPolygon( m_numVisibleHotspotPoints, m_visibleHotspotPoints );
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}
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//--------------------------------------------------------------------------------------------------------
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/**
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* Paints the polygonal border
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*/
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void CPolygonButton::PaintBorder( void )
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{
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Color c = GetButtonFgColor();
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vgui::surface()->DrawSetColor( c );
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vgui::surface()->DrawSetTexture( m_nWhiteMaterial );
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vgui::surface()->DrawTexturedPolyLine( m_visibleHotspotPoints, m_numVisibleHotspotPoints );
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}
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//--------------------------------------------------------------------------------------------------------
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void CPolygonButton::ApplySchemeSettings( vgui::IScheme *scheme )
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{
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BaseClass::ApplySchemeSettings( scheme );
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InvalidateLayout(); // so we can reposition the text
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}
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//--------------------------------------------------------------------------------------------------------
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