gui/BoringTheme/ButtonDecorator.cpp

   1 #include "ButtonDecorator.h"
   2 #include "scenegraph/VertexBuffer.h"
   3 #include "scenegraph/IndexBuffer16.h"
   4 #include "scenegraph/Geometry.h"
   5 #include "scenegraph/Material.h"
   6 #include "scenegraph/Drawable.h"
   7 #include "scenegraph/Group.h"
   8 #include <cmath>
   9
  10 using namespace awful;
  11 using namespace awful::gui;
  12
  13 BoringButtonDecorator::BoringButtonDecorator( Button* pButton_, Pointer< BoringTheme > pTheme_ ) :
  14         m_pButton( pButton_ ),
  15         m_labelx( 0.f ),
  16         m_labely( 0.f ),
  17         m_pTheme( pTheme_ )
  18 {
  19 }
  20
  21 void BoringButtonDecorator::buildSceneGraph( Pointer< scenegraph::Frame >& o_pFrame,
  22                                                                 Pointer< scenegraph::Renderable >& o_pRenderable )
  23 {
  24         o_pFrame = new scenegraph::Frame;
  25         Pointer< scenegraph::Group > pGroup = new scenegraph::Group( o_pFrame );
  26
  27         m_pRectFrame = new scenegraph::Frame;
  28         m_pRectFrame->setpParent( o_pFrame );
  29
  30         m_pRectangle = new shapes::Rectangle( m_pTheme->m_pIdleButtonMat, m_pRectFrame );
  31         pGroup->add( m_pRectangle.raw() );
  32
  33         m_pTextFrame = new scenegraph::Frame;
  34         m_pTextFrame->setpParent( o_pFrame );
  35
  36         m_pText = new scenegraph::Text
  37                 ( m_pTheme->m_pFont, m_pTextFrame, m_pTheme->m_pTextMat );
  38         pGroup->add( m_pText.raw() );
  39
  40         o_pRenderable = pGroup.raw();
  41 }
  42
  43 void BoringButtonDecorator::calcMinMax()
  44 {
  45         math::Vector2f minmax;
  46         minmax.x() = m_pTheme->m_pFont->getTextWidth( m_pButton->getLabel() ) + 12.f;
  47         minmax.y() = m_pTheme->m_pFont->getHeight() + 12.f;
  48         m_pButton->setMinSize( minmax );
  49
  50         minmax.x() = 0.f;
  51         m_pButton->setMaxSize( minmax );
  52 }
  53
  54 void BoringButtonDecorator::layout()
  55 {
  56         const math::Rectf& rect( m_pButton->getRect() );
  57
  58         math::Matrix44f& mtx = m_pRectFrame->getLocalToParent();
  59         mtx.right().x() = rect.width();
  60         mtx.up().y() = -rect.height();
  61         m_pRectFrame->dirty();
  62
  63         const std::string& label = m_pButton->getLabel();
  64         m_pText->setTextString( label );
  65
  66         math::Matrix44f& tmtx = m_pTextFrame->getLocalToParent();
  67         tmtx.position().x() = ( rect.width() - m_pTheme->m_pFont->getTextWidth( label ) ) / 2.f;
  68
  69         // Round up position to an integer, to avoid the text to get blurry if it falls half-way between
  70         // two pixels.
  71         // A bit hackish to do this here, but this is yeat something else to do
  72         // when reimplementing text rendering (maybe just disabling filtering could be enough, or
  73         // maybe a special vertex shader will be needed to do this rounding)
  74         tmtx.position().x() = std::floor( tmtx.position().x() + 0.5f );
  75
  76         tmtx.position().y() = -( rect.height() - m_pTheme->m_pFont->getHeight() ) / 2.f;
  77         tmtx.position().z() = 1.f / 32768.f;
  78 }
  79
  80 void BoringButtonDecorator::updateState()
  81 {
  82         switch( m_pButton->getState() )
  83         {
  84                 case Button::s_Idle:
  85                         m_pRectangle->setpMaterial( m_pTheme->m_pIdleButtonMat );
  86                         break;
  87
  88                 case Button::s_Hilighted:
  89                         m_pRectangle->setpMaterial( m_pTheme->m_pHilightButtonMat );
  90                         break;
  91
  92                 case Button::s_Pressed:
  93                         m_pRectangle->setpMaterial( m_pTheme->m_pPressedButtonMat );
  94                         break;
  95         }
  96 }