C++ Site::document方法代码示例

 // ContextObserver impl
 void onActiveSiteChange(const Site& site) override {
   if (isVisible())
     setCel(static_cast<app::Document*>(const_cast<doc::Document*>(site.document())),
            const_cast<Cel*>(site.cel()));
   else if (m_document)
     setCel(nullptr, nullptr);
 }

void ContextFlags::update(Context* context)
{
  Site site = context->activeSite();
  Document* document = static_cast<Document*>(site.document());

  m_flags = 0;

  if (document) {
    m_flags |= HasActiveDocument;

    if (document->lock(Document::ReadLock, 0)) {
      m_flags |= ActiveDocumentIsReadable;

      if (document->isMaskVisible())
        m_flags |= HasVisibleMask;

      Sprite* sprite = site.sprite();
      if (sprite) {
        m_flags |= HasActiveSprite;

        if (sprite->backgroundLayer())
          m_flags |= HasBackgroundLayer;

        Layer* layer = site.layer();
        if (layer) {
          m_flags |= HasActiveLayer;

          if (layer->isBackground())
            m_flags |= ActiveLayerIsBackground;

          if (layer->isVisible())
            m_flags |= ActiveLayerIsVisible;

          if (layer->isEditable())
            m_flags |= ActiveLayerIsEditable;

          if (layer->isImage()) {
            m_flags |= ActiveLayerIsImage;

            Cel* cel = layer->cel(site.frame());
            if (cel) {
              m_flags |= HasActiveCel;

              if (cel->image())
                m_flags |= HasActiveImage;
            }
          }
        }
      }

      if (document->lockToWrite(0))
        m_flags |= ActiveDocumentIsWritable;

      document->unlock();
    }
  }
}

void RotateCommand::onExecute(Context* context)
{
  {
    Site site = context->activeSite();
    CelList cels;
    bool rotateSprite = false;

    // Flip the mask or current cel
    if (m_flipMask) {
      auto range = App::instance()->timeline()->range();
      if (range.enabled())
        cels = get_unique_cels(site.sprite(), range);
      else if (site.cel()) {
        // If we want to rotate the visible mask for the current cel,
        // we can go to MovingPixelsState.
        if (static_cast<app::Document*>(site.document())->isMaskVisible()) {
          // Select marquee tool
          if (tools::Tool* tool = App::instance()->toolBox()
              ->getToolById(tools::WellKnownTools::RectangularMarquee)) {
            ToolBar::instance()->selectTool(tool);
            current_editor->startSelectionTransformation(gfx::Point(0, 0), m_angle);
            return;
          }
        }

        cels.push_back(site.cel());
      }
    }
    // Flip the whole sprite
    else if (site.sprite()) {
      for (Cel* cel : site.sprite()->uniqueCels())
        cels.push_back(cel);

      rotateSprite = true;
    }

    if (cels.empty())           // Nothing to do
      return;

    ContextReader reader(context);
    {
      RotateJob job(reader, m_angle, cels, rotateSprite);
      job.startJob();
      job.waitJob();
    }
    reader.document()->generateMaskBoundaries();
    update_screen_for_document(reader.document());
  }
}

bool StandbyState::onMouseDown(Editor* editor, MouseMessage* msg)
{
  if (editor->hasCapture())
    return true;

  UIContext* context = UIContext::instance();
  tools::Ink* clickedInk = editor->getCurrentEditorInk();
  Site site;
  editor->getSite(&site);
  app::Document* document = static_cast<app::Document*>(site.document());
  Layer* layer = site.layer();

  // When an editor is clicked the current view is changed.
  context->setActiveView(editor->getDocumentView());

  // Start scroll loop
  if (checkForScroll(editor, msg) || checkForZoom(editor, msg))
    return true;

  // Move cel X,Y coordinates
  if (clickedInk->isCelMovement()) {
    // Handle "Auto Select Layer"
    if (editor->isAutoSelectLayer()) {
      gfx::Point cursor = editor->screenToEditor(msg->position());

      ColorPicker picker;
      picker.pickColor(site, cursor, ColorPicker::FromComposition);

      if (layer != picker.layer()) {
        layer = picker.layer();
        if (layer) {
          editor->setLayer(layer);
          editor->flashCurrentLayer();
        }
      }
    }

    if ((layer) &&
        (layer->type() == ObjectType::LayerImage)) {
      // TODO we should be able to move the `Background' with tiled mode
      if (layer->isBackground()) {
        StatusBar::instance()->showTip(1000,
          "The background layer cannot be moved");
      }
      else if (!layer->isVisible()) {
        StatusBar::instance()->showTip(1000,
          "Layer '%s' is hidden", layer->name().c_str());
      }
      else if (!layer->isMovable() || !layer->isEditable()) {
        StatusBar::instance()->showTip(1000,
          "Layer '%s' is locked", layer->name().c_str());
      }
      else {
        // Change to MovingCelState
        editor->setState(EditorStatePtr(new MovingCelState(editor, msg)));
      }
    }

    return true;
  }

  // Call the eyedropper command
  if (clickedInk->isEyedropper()) {
    callEyedropper(editor);
    return true;
  }

  if (clickedInk->isSelection()) {
    // Transform selected pixels
    if (document->isMaskVisible() && m_decorator->getTransformHandles(editor)) {
      TransformHandles* transfHandles = m_decorator->getTransformHandles(editor);

      // Get the handle covered by the mouse.
      HandleType handle = transfHandles->getHandleAtPoint(editor,
        msg->position(),
        document->getTransformation());

      if (handle != NoHandle) {
        int x, y, opacity;
        Image* image = site.image(&x, &y, &opacity);
        if (layer && image) {
          if (!layer->isEditable()) {
            StatusBar::instance()->showTip(1000,
              "Layer '%s' is locked", layer->name().c_str());
            return true;
          }

          // Change to MovingPixelsState
          transformSelection(editor, msg, handle);
        }
        return true;
      }
    }

    // Move selected pixels
    if (layer && editor->isInsideSelection() && msg->left()) {
      if (!layer->isEditable()) {
        StatusBar::instance()->showTip(1000,
          "Layer '%s' is locked", layer->name().c_str());
        return true;
//.........这里部分代码省略.........

bool StandbyState::onMouseDown(Editor* editor, MouseMessage* msg)
{
  if (editor->hasCapture())
    return true;

  UIContext* context = UIContext::instance();
  tools::Ink* clickedInk = editor->getCurrentEditorInk();
  Site site;
  editor->getSite(&site);
  app::Document* document = static_cast<app::Document*>(site.document());
  Layer* layer = site.layer();

  // When an editor is clicked the current view is changed.
  context->setActiveView(editor->getDocumentView());

  // Start scroll loop
  if (checkForScroll(editor, msg) || checkForZoom(editor, msg))
    return true;

  // Move cel X,Y coordinates
  if (clickedInk->isCelMovement()) {
    // Handle "Auto Select Layer"
    if (editor->isAutoSelectLayer()) {
      gfx::Point cursor = editor->screenToEditor(msg->position());

      ColorPicker picker;
      picker.pickColor(site, cursor, ColorPicker::FromComposition);

      DocumentRange range = App::instance()->getMainWindow()->getTimeline()->range();

      // Change layer only when the layer is diffrent from current one, and
      // the range we selected is not with multiple cels.
      bool layerChanged = (layer != picker.layer());
      bool rangeEnabled = range.enabled();
      bool rangeSingleCel = ((range.type() == DocumentRange::kCels) &&
                             (range.layers() == 1) && (range.frames() == 1));

      if (layerChanged && (!rangeEnabled || rangeSingleCel)) {
        layer = picker.layer();
        if (layer) {
          editor->setLayer(layer);
          editor->flashCurrentLayer();
        }
      }
    }

    if ((layer) &&
        (layer->type() == ObjectType::LayerImage)) {
      // TODO we should be able to move the `Background' with tiled mode
      if (layer->isBackground()) {
        StatusBar::instance()->showTip(1000,
          "The background layer cannot be moved");
      }
      else if (!layer->isVisible()) {
        StatusBar::instance()->showTip(1000,
          "Layer '%s' is hidden", layer->name().c_str());
      }
      else if (!layer->isMovable() || !layer->isEditable()) {
        StatusBar::instance()->showTip(1000,
          "Layer '%s' is locked", layer->name().c_str());
      }
      else if (!layer->cel(editor->frame())) {
        StatusBar::instance()->showTip(1000,
          "Cel is empty, nothing to move");
      }
      else {
        // Change to MovingCelState
        editor->setState(EditorStatePtr(new MovingCelState(editor, msg)));
      }
    }

    return true;
  }

  // Call the eyedropper command
  if (clickedInk->isEyedropper()) {
    editor->captureMouse();
    callEyedropper(editor);
    return true;
  }

  if (clickedInk->isSelection()) {
    // Transform selected pixels
    if (editor->isActive() &&
        document->isMaskVisible() &&
        m_decorator->getTransformHandles(editor)) {
      TransformHandles* transfHandles = m_decorator->getTransformHandles(editor);

      // Get the handle covered by the mouse.
      HandleType handle = transfHandles->getHandleAtPoint(editor,
        msg->position(),
        document->getTransformation());

      if (handle != NoHandle) {
        int x, y, opacity;
        Image* image = site.image(&x, &y, &opacity);
        if (layer && image) {
          if (!layer->isEditable()) {
            StatusBar::instance()->showTip(1000,
              "Layer '%s' is locked", layer->name().c_str());
//.........这里部分代码省略.........

ExpandCelCanvas::ExpandCelCanvas(Site site,
  TiledMode tiledMode, Transaction& transaction, Flags flags)
  : m_document(static_cast<app::Document*>(site.document()))
  , m_sprite(site.sprite())
  , m_layer(site.layer())
  , m_cel(NULL)
  , m_celImage(NULL)
  , m_celCreated(false)
  , m_flags(flags)
  , m_srcImage(NULL)
  , m_dstImage(NULL)
  , m_closed(false)
  , m_committed(false)
  , m_transaction(transaction)
{
  ASSERT(!singleton);
  singleton = this;

  create_buffers();

  if (m_layer->isImage()) {
    m_cel = m_layer->cel(site.frame());
    if (m_cel)
      m_celImage = m_cel->imageRef();
  }

  // Create a new cel
  if (m_cel == NULL) {
    m_celCreated = true;
    m_cel = new Cel(site.frame(), ImageRef(NULL));
  }

  m_origCelPos = m_cel->position();

  // Region to draw
  gfx::Rect celBounds(
    m_cel->x(),
    m_cel->y(),
    m_celImage ? m_celImage->width(): m_sprite->width(),
    m_celImage ? m_celImage->height(): m_sprite->height());

  gfx::Rect spriteBounds(0, 0,
    m_sprite->width(),
    m_sprite->height());

  if (tiledMode == TiledMode::NONE) { // Non-tiled
    m_bounds = celBounds.createUnion(spriteBounds);
  }
  else {                         // Tiled
    m_bounds = spriteBounds;
  }

  // We have to adjust the cel position to match the m_dstImage
  // position (the new m_dstImage will be used in RenderEngine to
  // draw this cel).
  m_cel->setPosition(m_bounds.x, m_bounds.y);

  if (m_celCreated) {
    getDestCanvas();
    m_cel->data()->setImage(m_dstImage);
    static_cast<LayerImage*>(m_layer)->addCel(m_cel);
  }
}

PixelsMovement::PixelsMovement(
  Context* context,
  Site site,
  const Image* moveThis,
  const Mask* mask,
  const char* operationName)
  : m_reader(context)
  , m_site(site)
  , m_document(static_cast<app::Document*>(site.document()))
  , m_sprite(site.sprite())
  , m_layer(site.layer())
  , m_transaction(context, operationName)
  , m_setMaskCmd(nullptr)
  , m_isDragging(false)
  , m_adjustPivot(false)
  , m_handle(NoHandle)
  , m_originalImage(Image::createCopy(moveThis))
  , m_opaque(false)
  , m_maskColor(m_sprite->transparentColor())
{
  gfx::Transformation transform(mask->bounds());
  set_pivot_from_preferences(transform);

  m_initialData = transform;
  m_currentData = transform;

  m_initialMask = new Mask(*mask);
  m_currentMask = new Mask(*mask);

  m_pivotVisConn =
    Preferences::instance().selection.pivotVisibility.AfterChange.connect(
      base::Bind<void>(&PixelsMovement::onPivotChange, this));
  m_pivotPosConn =
    Preferences::instance().selection.pivotPosition.AfterChange.connect(
      base::Bind<void>(&PixelsMovement::onPivotChange, this));
  m_rotAlgoConn =
    Preferences::instance().selection.rotationAlgorithm.AfterChange.connect(
      base::Bind<void>(&PixelsMovement::onRotationAlgorithmChange, this));

  // The extra cel must be null, because if it's not null, it means
  // that someone else is using it (e.g. the editor brush preview),
  // and its owner could destroy our new "extra cel".
  ASSERT(!m_document->extraCel());
  redrawExtraImage();
  redrawCurrentMask();

  // If the mask isn't in the document (e.g. it's from Paste command),
  // we've to replace the document mask and generate its boundaries.
  //
  // This is really tricky. PixelsMovement is used in two situations:
  // 1) When the current selection is transformed, and
  // 2) when the user pastes the clipboard content.
  //
  // In the first case, the current document selection is used. And a
  // cutMask() command could be called after PixelsMovement ctor. We
  // need the following stack of Cmd instances in the Transaction:
  // - cmd::ClearMask: clears the old mask)
  // - cmd::SetMask (m_setMaskCmd): replaces the old mask with a new mask
  // The new mask in m_setMaskCmd is replaced each time the mask is modified.
  //
  // In the second case, the mask isn't in the document, is a new mask
  // used to paste the pixels, so we've to replace the document mask.
  // The Transaction contains just a:
  // - cmd::SetMask
  //
  // The main point here is that cmd::SetMask must be the last item in
  // the Transaction using the mask (because we use cmd::SetMask::setNewMask()).
  //
  // TODO Simplify this code in some way or make explicit both usages
  if (mask != m_document->mask()) {
    updateDocumentMask();
    update_screen_for_document(m_document);
  }
}