C++ DocumentApi::addImageInStock方法代码示例

  void onImport()
  {
    // The user don't select a sheet yet.
    if (!m_document) {
      Alert::show("Import Sprite Sheet<<Select a sprite first.||&Close");
      return;
    }

    // The list of frames imported from the sheet
    std::vector<Image*> animation;

    try {
      Sprite* sprite = m_document->getSprite();
      FrameNumber currentFrame = m_context->getActiveLocation().frame();

      // As first step, we cut each tile and add them into "animation" list.
      for (int y=m_rect.y; y<sprite->getHeight(); y += m_rect.h) {
        for (int x=m_rect.x; x<sprite->getWidth(); x += m_rect.w) {
          base::UniquePtr<Image> resultImage(Image::create(sprite->getPixelFormat(), m_rect.w, m_rect.h));

          // Clear the image with mask color.
          image_clear(resultImage, 0);

          // Render the portion of sheet.
          sprite->render(resultImage, -x, -y, currentFrame);
          animation.push_back(resultImage);
          resultImage.release();
        }
      }

      if (animation.size() == 0) {
        Alert::show("Import Sprite Sheet"
                    "<<The specified rectangle does not create any tile."
                    "<<Select a rectangle inside the sprite region."
                    "||&OK");
        return;
      }

      // The following steps modify the sprite, so we wrap all
      // operations in a undo-transaction.
      ContextWriter writer(m_context);
      UndoTransaction undoTransaction(writer.context(), "Import Sprite Sheet", undo::ModifyDocument);
      DocumentApi api = m_document->getApi();

      // Add the layer in the sprite.
      LayerImage* resultLayer = api.newLayer(sprite);

      // Add all frames+cels to the new layer
      for (size_t i=0; i<animation.size(); ++i) {
        int indexInStock;

        // Add the image into the sprite's stock
        indexInStock = api.addImageInStock(sprite, animation[i]);
        animation[i] = NULL;

        // Create the cel.
        base::UniquePtr<Cel> resultCel(new Cel(FrameNumber(i), indexInStock));

        // Add the cel in the layer.
        api.addCel(resultLayer, resultCel);
        resultCel.release();
      }

      // Copy the list of layers (because we will modify it in the iteration).
      LayerList layers = sprite->getFolder()->getLayersList();

      // Remove all other layers
      for (LayerIterator it=layers.begin(), end=layers.end(); it!=end; ++it) {
        if (*it != resultLayer)
          api.removeLayer(*it);
      }

      // Change the number of frames
      api.setTotalFrames(sprite, FrameNumber(animation.size()));

      // Set the size of the sprite to the tile size.
      api.setSpriteSize(sprite, m_rect.w, m_rect.h);

      undoTransaction.commit();
    }
    catch (...) {
      for (size_t i=0; i<animation.size(); ++i)
        delete animation[i];
      throw;
    }

    update_screen_for_document(m_document);
    closeWindow(NULL);
  }