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Modif/epsilon-master/escher/src/button_row_controller.cpp 8.59 KB
6663b6c9   adorian   projet complet av...
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  #include <escher/button_row_controller.h>
  #include <escher/palette.h>
  #include <cmath>
  
  ButtonRowDelegate::ButtonRowDelegate(ButtonRowController * header, ButtonRowController * footer) :
    m_header(header),
    m_footer(footer)
  {
  }
  
  ButtonRowController::ContentView::ContentView(ViewController * mainViewController, ButtonRowDelegate * delegate, Position position, Style style, Size size) :
    View(),
    m_mainViewController(mainViewController),
    m_selectedButton(-1),
    m_delegate(delegate),
    m_position(position),
    m_style(style),
    m_size(size)
  {
  }
  
  int ButtonRowController::ContentView::numberOfButtons() const {
    return m_delegate->numberOfButtons(m_position);
  }
  
  Button * ButtonRowController::ContentView::buttonAtIndex(int index) const {
    return m_delegate->buttonAtIndex(index, m_position);
  }
  
  void ButtonRowController::ContentView::reload() {
    markRectAsDirty(bounds());
  }
  
  int ButtonRowController::ContentView::numberOfSubviews() const {
    return numberOfButtons() + 1;
  }
  
  View * ButtonRowController::ContentView::subviewAtIndex(int index) {
    /* Warning: the order of the subviews is important for drity tracking.
     * Indeed, when a child is redrawn, the redrawn area is the smallest
     * rectangle unioniong the dirty rectangle and the previous redrawn area.
     * As the main view is more likely to be bigger, we prefer to set it as the
     * last child. */
    if (index == numberOfSubviews() - 1) {
      return m_mainViewController->view();
    } else {
      return buttonAtIndex(index);
    }
  }
  
  void ButtonRowController::ContentView::layoutSubviews() {
    /* Position the main view */
    if (numberOfButtons() == 0) {
      KDCoordinate margin = m_position == Position::Top ? 1 : 0;
      KDRect mainViewFrame(0, margin, bounds().width(), bounds().height()-margin);
      m_mainViewController->view()->setFrame(mainViewFrame);
      return;
    }
    KDCoordinate rowHeight;
    if (m_style == Style::PlainWhite) {
      rowHeight = k_plainStyleHeight;
    } else {
      rowHeight = m_size == Size::Small ? k_embossedStyleHeightSmall : k_embossedStyleHeightLarge;
    }
    KDCoordinate frameOrigin = m_position == Position::Top ? rowHeight+1 : 0;
    KDRect mainViewFrame(0, frameOrigin, bounds().width(), bounds().height() - rowHeight - 1);
      m_mainViewController->view()->setFrame(mainViewFrame);
  
    /* Position buttons */
    int nbOfButtons = numberOfButtons();
    KDCoordinate widthMargin = 0;
    KDCoordinate buttonHeightMargin = 0;
    KDCoordinate buttonHeight = rowHeight;
    if (m_style == Style::EmbossedGrey) {
      KDCoordinate totalButtonWidth = 0;
      for (int i = 0; i < nbOfButtons; i++) {
        Button * button = buttonAtIndex(i);
        totalButtonWidth += button->minimalSizeForOptimalDisplay().width();
      }
      widthMargin = std::round(((float)(bounds().width() - totalButtonWidth))/((float)(nbOfButtons+1)));
      buttonHeightMargin = m_size == Size::Small ? k_embossedStyleHeightMarginSmall : k_embossedStyleHeightMarginLarge;
      buttonHeight = rowHeight- 2*buttonHeightMargin;
    }
    KDCoordinate yOrigin = m_position == Position::Top ? buttonHeightMargin : bounds().height()-rowHeight+buttonHeightMargin;
    int currentXOrigin = widthMargin;
    for (int i = 0; i < numberOfButtons(); i++) {
      Button * button = buttonAtIndex(i);
      KDCoordinate buttonWidth = button->minimalSizeForOptimalDisplay().width();
      KDRect buttonFrame(currentXOrigin, yOrigin, buttonWidth, buttonHeight);
      button->setFrame(buttonFrame);
      currentXOrigin += buttonWidth + widthMargin;
    }
  }
  
  void ButtonRowController::ContentView::drawRect(KDContext * ctx, KDRect rect) const {
    if (numberOfButtons() == 0) {
        if (m_position == Position::Top) {
          ctx->fillRect(KDRect(0, 0, bounds().width(), 1), Palette::GreyWhite);
        }
      return;
    }
    if (m_style == Style::PlainWhite) {
      if (m_position == Position::Top) {
        ctx->fillRect(KDRect(0, 0, bounds().width(), k_plainStyleHeight), KDColorWhite);
        ctx->fillRect(KDRect(0, k_plainStyleHeight, bounds().width(), 1), Palette::GreyWhite);
      } else {
        ctx->fillRect(KDRect(0, bounds().height() - k_plainStyleHeight, bounds().width(), k_plainStyleHeight), KDColorWhite);
        ctx->fillRect(KDRect(0, bounds().height() - k_plainStyleHeight-1, bounds().width(), 1), Palette::GreyWhite);
      }
      return;
    }
    int buttonHeight = m_size == Size::Small ? k_embossedStyleHeightSmall : k_embossedStyleHeightLarge;
    int buttonMargin = m_size == Size::Small ? k_embossedStyleHeightMarginSmall : k_embossedStyleHeightMarginLarge;
    if (m_position == Position::Top) {
      ctx->fillRect(KDRect(0, 0, bounds().width(), buttonHeight), Palette::GreyWhite);
      ctx->fillRect(KDRect(0, buttonHeight, bounds().width(), 1), Palette::GreyMiddle);
    } else {
      ctx->fillRect(KDRect(0, bounds().height() - buttonHeight, bounds().width(), buttonHeight), Palette::GreyWhite);
      ctx->fillRect(KDRect(0,  bounds().height() - buttonHeight-1, bounds().width(), 1), Palette::GreyMiddle);
    }
    KDCoordinate y0 = m_position == Position::Top ? buttonMargin-1 : bounds().height()-buttonHeight+buttonMargin-1;
    KDCoordinate y1 = m_position == Position::Top ? buttonHeight-buttonMargin-2 : bounds().height()-buttonMargin;
    KDCoordinate totalButtonWidth = 0;
    for (int i = 0; i < numberOfButtons(); i++) {
      Button * button = buttonAtIndex(i);
      totalButtonWidth += button->minimalSizeForOptimalDisplay().width();
    }
    KDCoordinate widthMargin = std::round(((float)(bounds().width() - totalButtonWidth))/((float)(numberOfButtons()+1)));
  
    int currentXOrigin = widthMargin-1;
    for (int i = 0; i < numberOfButtons(); i++) {
      Button * button = buttonAtIndex(i);
      KDCoordinate buttonWidth = button->minimalSizeForOptimalDisplay().width();
      ctx->fillRect(KDRect(currentXOrigin, y0, 1, y1-y0+1), Palette::GreyMiddle);
      ctx->fillRect(KDRect(currentXOrigin-1, y0, 1, y1-y0+2), Palette::GreyDark);
      ctx->fillRect(KDRect(currentXOrigin, y0, buttonWidth+2, 1), Palette::GreyMiddle);
      ctx->fillRect(KDRect(currentXOrigin, y1, buttonWidth+2, 1), Palette::GreyMiddle);
      ctx->fillRect(KDRect(currentXOrigin, y1+1, buttonWidth+2, 1), Palette::GreyDark);
      ctx->fillRect(KDRect(currentXOrigin+1+buttonWidth, y0, 1, y1-y0+1), Palette::GreyMiddle);
      currentXOrigin += buttonWidth + widthMargin;
    }
  }
  
  bool ButtonRowController::ContentView::setSelectedButton(int selectedButton, App * application) {
    if (selectedButton < -1 || selectedButton >= numberOfButtons() || selectedButton == m_selectedButton) {
      return false;
    }
    if (m_selectedButton >= 0) {
      Button * button = buttonAtIndex(m_selectedButton);
      button->setHighlighted(false);
    }
    m_selectedButton = selectedButton;
    if (m_selectedButton >= 0) {
      Button * button = buttonAtIndex(selectedButton);
      button->setHighlighted(true);
      application->setFirstResponder(button);
      return true;
    }
    return false;
  }
  
  ButtonRowController::ButtonRowController(Responder * parentResponder, ViewController * mainViewController, ButtonRowDelegate * delegate, Position position, Style style, Size size) :
    ViewController(parentResponder),
    m_contentView(mainViewController, delegate, position, style, size)
  {
  }
  
  const char * ButtonRowController::title() {
    return m_contentView.mainViewController()->title();
  }
  
  void ButtonRowController::didBecomeFirstResponder(){
    app()->setFirstResponder(m_contentView.mainViewController());
  }
  
  int ButtonRowController::selectedButton() {
    return m_contentView.selectedButton();
  }
  
  bool ButtonRowController::setSelectedButton(int selectedButton) {
    App * application = app();
    return m_contentView.setSelectedButton(selectedButton, application);
  }
  
  void ButtonRowController::setMessageOfButtonAtIndex(I18n::Message message, int index) {
    if (m_contentView.numberOfButtons() > index) {
      m_contentView.buttonAtIndex(0)->setMessage(message);
      m_contentView.layoutSubviews();
      m_contentView.reload();
    }
  }
  
  bool ButtonRowController::handleEvent(Ion::Events::Event event) {
    if (event == Ion::Events::Left) {
      if (m_contentView.selectedButton() == 0) {
      } else {
        setSelectedButton(m_contentView.selectedButton() - 1);
      }
      return true;
    }
    if (event == Ion::Events::Right) {
      if (m_contentView.selectedButton() == - 1) {
      } else {
        setSelectedButton(m_contentView.selectedButton() + 1);
      }
      return true;
    }
    if (event == Ion::Events::OK || event == Ion::Events::EXE) {
      return true;
    }
    return false;
  }
  
  void ButtonRowController::viewWillAppear() {
    /* We need to layout subviews at first appearance because the number of
     * buttons might have changed between 2 appearences. */
    m_contentView.layoutSubviews();
    m_contentView.mainViewController()->viewWillAppear();
  }
  
  void ButtonRowController::viewDidDisappear() {
    m_contentView.mainViewController()->viewDidDisappear();
  }