Method OnDraw

ui/UICombo.cpp:151–197

behavior when gadget is being drawn.

// behavior when gadget is being drawn.
void UIComboBox::OnDraw() {
  UITextItem uarrow;
  UITextItem darrow;
  char arrowbuf[2];

  if (m_Flags & UIF_BORDER)
    ui_DrawBox(GR_WHITE, 0, 0, m_W, m_H);

  //	draw all items in box that can be visible.
  int x = m_CX;
  int y = m_CY;

  if (!m_nItems)
    return;

  snprintf(arrowbuf, sizeof(arrowbuf), "%c", UI_UP_ARROW_CHAR);
  uarrow = UITextItem(arrowbuf, m_ItemList[m_Index]->get_color(), 255);
  snprintf(arrowbuf, sizeof(arrowbuf), "%c", UI_DOWN_ARROW_CHAR);
  darrow = UITextItem(arrowbuf, m_ItemList[m_Index]->get_color(), 255);

  ui_SetTextClip(m_CX, m_CY, m_CX2, m_CY2);

  // reset these
  m_ShowUp = m_ShowDown = false;
  m_ArrY = y;
  m_ArrH = uarrow.height();

  if (m_Index > 0) {
    m_UpArrX = m_CX;
    m_UpArrW = uarrow.width();
    uarrow.draw(m_UpArrX, m_ArrY);
    m_ShowUp = true;
  }
  if (m_Index < (m_nItems - 1)) {
    m_DownArrX = m_CX2 - darrow.width();
    m_DownArrW = darrow.width();
    darrow.draw(m_DownArrX, m_ArrY);
    m_ShowDown = true;
  }

  // draw current item.
  x = m_CX + uarrow.width() + 2;
  ui_SetTextClip(x, m_CY, m_CX2 - darrow.width() - 2, m_CY2);
  m_ItemList[m_Index]->draw(x, y);

  ui_ResetTextClip();
}

//	behavior when key is pressed.
void UIComboBox::OnKeyDown(int key) {