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build3/poincare/src/layout/baseline_relative_layout.cpp 1.9 KB
6663b6c9   adorian   projet complet av...
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  #include "baseline_relative_layout.h"
  #include <string.h>
  #include <assert.h>
  
  namespace Poincare {
  
  BaselineRelativeLayout::BaselineRelativeLayout(ExpressionLayout * baseLayout, ExpressionLayout * indiceLayout, Type type) :
    ExpressionLayout(),
    m_baseLayout(baseLayout),
    m_indiceLayout(indiceLayout),
    m_type(type)
  {
    m_baseLayout->setParent(this);
    m_indiceLayout->setParent(this);
    m_baseline = type == Type::Subscript ? m_baseLayout->baseline() :
      m_indiceLayout->size().height() + m_baseLayout->baseline() - k_indiceHeight;
  }
  
  BaselineRelativeLayout::~BaselineRelativeLayout() {
    delete m_baseLayout;
    delete m_indiceLayout;
  }
  
  ExpressionLayout * BaselineRelativeLayout::baseLayout() {
    return m_baseLayout;
  }
  
  ExpressionLayout * BaselineRelativeLayout::indiceLayout() {
    return m_indiceLayout;
  }
  
  void BaselineRelativeLayout::render(KDContext * ctx, KDPoint p, KDColor expressionColor, KDColor backgroundColor) {
    // There is nothing to draw for a subscript/superscript, only the position of the children matters
  }
  
  KDSize BaselineRelativeLayout::computeSize() {
    KDSize baseSize = m_baseLayout->size();
    KDSize indiceSize = m_indiceLayout->size();
    return KDSize(baseSize.width() + indiceSize.width(), baseSize.height() + indiceSize.height() - k_indiceHeight);
  }
  
  ExpressionLayout * BaselineRelativeLayout::child(uint16_t index) {
    switch (index) {
      case 0:
        return m_baseLayout;
      case 1:
        return m_indiceLayout;
      default:
        return nullptr;
    }
  }
  
  KDPoint BaselineRelativeLayout::positionOfChild(ExpressionLayout * child) {
    KDCoordinate x = 0;
    KDCoordinate y = 0;
    if (child == m_baseLayout && m_type == Type::Superscript) {
      x = 0;
      y = m_indiceLayout->size().height() - k_indiceHeight;
    }
    if (child == m_indiceLayout) {
      x = m_baseLayout->size().width();
      y =  m_type == Type::Superscript ? 0 : m_baseLayout->size().height() - k_indiceHeight;
    }
    return KDPoint(x,y);
  }
  
  }