C++ LayerImage类代码示例

void DuplicateLayerCommand::onExecute(Context* context)
{
  ContextWriter writer(context);
  Document* document = writer.document();
  Sprite* sprite = writer.sprite();
  UndoTransaction undo(writer.context(), "Layer Duplication");
  LayerImage* sourceLayer = static_cast<LayerImage*>(writer.layer());

  // Create a new layer
  UniquePtr<LayerImage> newLayerPtr(new LayerImage(sprite));

  // Disable undo because the layer content is added as a whole with
  // AddLayer() undoer.
  document->getUndo()->setEnabled(false);

  // Copy the layer content (cels + images)
  document->copyLayerContent(sourceLayer, document, newLayerPtr);

  // Restore enabled status.
  document->getUndo()->setEnabled(undo.isEnabled());

  // Copy the layer name
  newLayerPtr->setName(newLayerPtr->getName() + " Copy");

  // Add the new layer in the sprite.
  document->getApi().addLayer(sourceLayer->getParent(), newLayerPtr, sourceLayer);

  // Release the pointer as it is owned by the sprite now
  Layer* newLayer = newLayerPtr.release();

  undo.commit();

  update_screen_for_document(document);
}

void SetCelFrame::revert(ObjectsContainer* objects, UndoersCollector* redoers)
{
  LayerImage* layer = objects->getObjectT<LayerImage>(m_layerId);
  Cel* cel = objects->getObjectT<Cel>(m_celId);

  // Push another SetCelFrame as redoer
  redoers->pushUndoer(new SetCelFrame(objects, layer, cel));

  layer->moveCel(cel, m_frame);
}

TEST(File, SeveralSizes)
{
  she::ScopedHandle<she::System> system(she::CreateSystem());
  // Register all possible image formats.
  FileFormatsManager::instance().registerAllFormats();
  std::vector<char> fn(256);

  for (int w=10; w<=10+503*2; w+=503) {
    for (int h=10; h<=10+503*2; h+=503) {
      //std::sprintf(&fn[0], "test_%dx%d.ase", w, h);
      std::sprintf(&fn[0], "test.ase");

      {
        UniquePtr<Document> doc(Document::createBasicDocument(IMAGE_INDEXED, w, h, 256));
        doc->setFilename(&fn[0]);

        // Random pixels
        LayerImage* layer = dynamic_cast<LayerImage*>(doc->getSprite()->getFolder()->getFirstLayer());
        ASSERT_TRUE(layer != NULL);
        Image* image = doc->getSprite()->getStock()->getImage(layer->getCel(FrameNumber(0))->getImage());
        std::srand(w*h);
        int c = std::rand()%256;
        for (int y=0; y<h; y++) {
          for (int x=0; x<w; x++) {
            image_putpixel_fast<IndexedTraits>(image, x, y, c);
            if ((std::rand()&4) == 0)
              c = std::rand()%256;
          }
        }

        save_document(doc);
      }

      {
        UniquePtr<Document> doc(load_document(&fn[0]));
        ASSERT_EQ(w, doc->getSprite()->getWidth());
        ASSERT_EQ(h, doc->getSprite()->getHeight());

        // Same random pixels (see the seed)
        LayerImage* layer = dynamic_cast<LayerImage*>(doc->getSprite()->getFolder()->getFirstLayer());
        ASSERT_TRUE(layer != NULL);
        Image* image = doc->getSprite()->getStock()->getImage(layer->getCel(FrameNumber(0))->getImage());
        std::srand(w*h);
        int c = std::rand()%256;
        for (int y=0; y<h; y++) {
          for (int x=0; x<w; x++) {
            ASSERT_EQ(c, image_getpixel_fast<IndexedTraits>(image, x, y));
            if ((std::rand()&4) == 0)
              c = std::rand()%256;
          }
        }
      }
    }
  }
}

void UnlinkCelCommand::onExecute(Context* context)
{
  ContextWriter writer(context);
  Document* document(writer.document());
  bool nonEditableLayers = false;
  {
    Transaction transaction(writer.context(), "Unlink Cel");

    // TODO the range of selected frames should be in doc::Site.
    auto range = App::instance()->timeline()->range();
    if (range.enabled()) {
      Sprite* sprite = writer.sprite();

      for (LayerIndex layerIdx = range.layerBegin(); layerIdx <= range.layerEnd(); ++layerIdx) {
        Layer* layer = sprite->indexToLayer(layerIdx);
        if (!layer->isImage())
          continue;

        LayerImage* layerImage = static_cast<LayerImage*>(layer);

        for (frame_t frame = range.frameEnd(),
               begin = range.frameBegin()-1;
             frame != begin;
             --frame) {
          Cel* cel = layerImage->cel(frame);
          if (cel && cel->links()) {
            if (layerImage->isEditable())
              transaction.execute(new cmd::UnlinkCel(cel));
            else
              nonEditableLayers = true;
          }
        }
      }
    }
    else {
      Cel* cel = writer.cel();
      if (cel && cel->links()) {
        if (cel->layer()->isEditable())
          transaction.execute(new cmd::UnlinkCel(writer.cel()));
        else
          nonEditableLayers = true;
      }
    }

    transaction.commit();
  }

  if (nonEditableLayers)
    StatusBar::instance()->showTip(1000,
      "There are locked layers");

  update_screen_for_document(document);
}

void LinkCelsCommand::onExecute(Context* context)
{
  ContextWriter writer(context);
  Document* document(writer.document());
  bool nonEditableLayers = false;
  {
    // TODO the range of selected frames should be in doc::Site.
    Timeline::Range range = App::instance()->getMainWindow()->getTimeline()->range();
    if (!range.enabled())
      return;

    Transaction transaction(writer.context(), friendlyName());
    Sprite* sprite = writer.sprite();
    frame_t begin = range.frameBegin();
    frame_t end = range.frameEnd();

    for (LayerIndex layerIdx = range.layerBegin(); layerIdx <= range.layerEnd(); ++layerIdx) {
      Layer* layer = sprite->indexToLayer(layerIdx);
      if (!layer->isImage())
        continue;

      if (!layer->isEditable()) {
        nonEditableLayers = true;
        continue;
      }

      LayerImage* layerImage = static_cast<LayerImage*>(layer);
      for (frame_t frame=begin; frame < end+1; ++frame) {
        Cel* cel = layerImage->cel(frame);
        if (cel) {
          for (frame = cel->frame()+1;
               frame < end+1; ++frame) {
            transaction.execute(
              new cmd::CopyCel(
                layerImage, cel->frame(),
                layerImage, frame,
                true));         // true = force links
          }
          break;
        }
      }
    }

    transaction.commit();
  }

  if (nonEditableLayers)
    StatusBar::instance()->showTip(1000,
      "There are locked layers");

  update_screen_for_document(document);
}

void LinkCelsCommand::onExecute(Context* context)
{
  ContextWriter writer(context);
  Doc* document(writer.document());
  bool nonEditableLayers = false;
  {
    auto site = context->activeSite();
    if (!site.inTimeline())
      return;

    Tx tx(writer.context(), friendlyName());

    for (Layer* layer : site.selectedLayers()) {
      if (!layer->isImage())
        continue;

      if (!layer->isEditableHierarchy()) {
        nonEditableLayers = true;
        continue;
      }

      LayerImage* layerImage = static_cast<LayerImage*>(layer);

      for (auto it=site.selectedFrames().begin(), end=site.selectedFrames().end();
           it != end; ++it) {
        frame_t frame = *it;
        Cel* cel = layerImage->cel(frame);
        if (cel) {
          for (++it; it != end; ++it) {
            tx(
              new cmd::CopyCel(
                layerImage, cel->frame(),
                layerImage, *it,
                true));         // true = force links
          }
          break;
        }
      }
    }

    tx.commit();
  }

  if (nonEditableLayers)
    StatusBar::instance()->showTip(1000,
      "There are locked layers");

  update_screen_for_document(document);
}

void UnlinkCelCommand::onExecute(Context* context)
{
  ContextWriter writer(context);
  Document* document(writer.document());
  bool nonEditableLayers = false;
  {
    Transaction transaction(writer.context(), "Unlink Cel");

    const Site* site = writer.site();
    if (site->inTimeline() &&
        !site->selectedLayers().empty()) {
      for (Layer* layer : site->selectedLayers()) {
        if (!layer->isImage())
          continue;

        if (!layer->isEditableHierarchy()) {
          nonEditableLayers = true;
          continue;
        }

        LayerImage* layerImage = static_cast<LayerImage*>(layer);

        for (frame_t frame : site->selectedFrames().reversed()) {
          Cel* cel = layerImage->cel(frame);
          if (cel && cel->links())
            transaction.execute(new cmd::UnlinkCel(cel));
        }
      }
    }
    else {
      Cel* cel = writer.cel();
      if (cel && cel->links()) {
        if (cel->layer()->isEditableHierarchy())
          transaction.execute(new cmd::UnlinkCel(writer.cel()));
        else
          nonEditableLayers = true;
      }
    }

    transaction.commit();
  }

  if (nonEditableLayers)
    StatusBar::instance()->showTip(1000,
      "There are locked layers");

  update_screen_for_document(document);
}

  DocRangeOps() {
    black = rgba(0, 0, 0, 0);
    white = rgba(255, 255, 255, 255);

    doc.reset(static_cast<app::Document*>(ctx.documents().add(4, 4)));
    sprite = doc->sprite();
    layer1 = dynamic_cast<LayerImage*>(sprite->folder()->getFirstLayer());
    layer2 = new LayerImage(sprite);
    layer3 = new LayerImage(sprite);
    layer4 = new LayerImage(sprite);
    sprite->folder()->addLayer(layer2);
    sprite->folder()->addLayer(layer3);
    sprite->folder()->addLayer(layer4);
    EXPECT_LAYER_ORDER(layer1, layer2, layer3, layer4);

    layer1->setName("layer1");
    layer2->setName("layer2");
    layer3->setName("layer3");
    layer4->setName("layer4");

    sprite->setTotalFrames(frame_t(4));
    sprite->setFrameDuration(frame_t(0), 1); // These durations can be used to identify
    sprite->setFrameDuration(frame_t(1), 2); // frames after a move operation
    sprite->setFrameDuration(frame_t(2), 3);
    sprite->setFrameDuration(frame_t(3), 4);

    for (int i=0; i<4; i++) {
      LayerImage* layer = static_cast<LayerImage*>(sprite->indexToLayer(LayerIndex(i)));

      for (int j=0; j<4; j++) {
        Cel* cel = layer->cel(frame_t(j));
        ImageRef image;
        if (cel)
          image = cel->imageRef();
        else {
          image.reset(Image::create(IMAGE_RGB, 4, 4));
          cel = new Cel(frame_t(j), image);
          layer->addCel(cel);
        }

        clear_image(image.get(), black);
        put_pixel(image.get(), i, j, white);
      }
    }
  }

static void move_or_copy_cels(
  DocApi& api, Op op,
  const LayerList& srcLayers,
  const LayerList& dstLayers,
  const SelectedFrames& srcFrames,
  const SelectedFrames& dstFrames)
{
  ASSERT(srcLayers.size() == dstLayers.size());

  for (layer_t i=0; i<srcLayers.size(); ++i) {
    auto srcFrame = srcFrames.begin();
    auto dstFrame = dstFrames.begin();
    auto srcFrameEnd = srcFrames.end();
    auto dstFrameEnd = dstFrames.end();

    for (; srcFrame != srcFrameEnd &&
           dstFrame != dstFrameEnd; ++srcFrame, ++dstFrame) {
      if (i >= 0 && i < srcLayers.size() && srcLayers[i]->isImage()) {
        LayerImage* srcLayer = static_cast<LayerImage*>(srcLayers[i]);

        if (i < dstLayers.size() && dstLayers[i]->isImage()) {
          LayerImage* srcLayer = static_cast<LayerImage*>(srcLayers[i]);
          LayerImage* dstLayer = static_cast<LayerImage*>(dstLayers[i]);

#ifdef TRACE_RANGE_OPS
          std::clog << (op == Move ? "Moving": "Copying")
                    << " cel " << srcLayer->name() << "[" << *srcFrame << "]"
                    << " into " << dstLayer->name() << "[" << *dstFrame << "]\n";
#endif

          switch (op) {
            case Move: api.moveCel(srcLayer, *srcFrame, dstLayer, *dstFrame); break;
            case Copy: api.copyCel(srcLayer, *srcFrame, dstLayer, *dstFrame); break;
          }
        }
        else if (op == Move) {
          api.clearCel(srcLayer, *srcFrame);
        }
      }
    }
  }
}

bool save_palette(const char *filename, Palette* pal)
{
  std::string ext = base::string_to_lower(base::get_file_extension(filename));
  bool success = false;

  if (ext == "col") {
    success = doc::file::save_col_file(pal, filename);
  }
  else if (ext == "gpl") {
    success = doc::file::save_gpl_file(pal, filename);
  }
  else {
    FileFormat* ff = FileFormatsManager::instance()->getFileFormatByExtension(ext.c_str());
    if (ff->support(FILE_SUPPORT_SAVE)) {
      app::Context tmpContext;
      doc::Document* doc = tmpContext.documents().add(
        16, 16, doc::ColorMode::INDEXED,
        Palette::MaxColors);

      Sprite* sprite = doc->sprite();
      doc->sprite()->setPalette(pal, false);

      LayerImage* layer = dynamic_cast<LayerImage*>(sprite->folder()->getFirstLayer());
      Image* image = layer->getCel(FrameNumber(0))->image();

      int x, y, c;
      for (y=c=0; y<16; y++)
        for (x=0; x<16; x++)
          image->putPixel(x, y, c++);

      doc->setFilename(filename);
      success = (save_document(&tmpContext, doc) == 0);

      doc->close();
      delete doc;
    }
  }

  return success;
}

// TODO the DocumentRange should be "iteratable" to replace this function
CelList get_cels_in_range(Sprite* sprite, const DocumentRange& range)
{
  CelList cels;

  for (LayerIndex layerIdx = range.layerBegin(); layerIdx <= range.layerEnd(); ++layerIdx) {
    Layer* layer = sprite->indexToLayer(layerIdx);
    if (!layer->isImage())
      continue;

    LayerImage* layerImage = static_cast<LayerImage*>(layer);

    for (FrameNumber frame = range.frameEnd(),
           begin = range.frameBegin().previous();
         frame != begin;
         frame = frame.previous()) {
      Cel* cel = layerImage->getCel(frame);
      if (cel)
        cels.push_back(cel);
    }
  }
  return cels;
}

MovingCelState::MovingCelState(Editor* editor, MouseMessage* msg)
  : m_canceled(false)
{
  ContextWriter writer(UIContext::instance(), 500);
  Document* document = editor->document();
  auto range = App::instance()->timeline()->range();
  LayerImage* layer = static_cast<LayerImage*>(editor->layer());
  ASSERT(layer->isImage());

  Cel* currentCel = layer->cel(editor->frame());
  ASSERT(currentCel); // The cel cannot be null

  if (!range.enabled())
    range = DocumentRange(currentCel);

  // Record start positions of all cels in selected range
  for (Cel* cel : get_unique_cels(writer.sprite(), range)) {
    Layer* layer = cel->layer();
    ASSERT(layer);

    if (layer && layer->isMovable() && !layer->isBackground()) {
      m_celList.push_back(cel);
      m_celStarts.push_back(cel->position());
    }
  }

  m_cursorStart = editor->screenToEditor(msg->position());
  m_celOffset = gfx::Point(0, 0);
  editor->captureMouse();

  // Hide the mask (temporarily, until mouse-up event)
  m_maskVisible = document->isMaskVisible();
  if (m_maskVisible) {
    document->setMaskVisible(false);
    document->generateMaskBoundaries();
  }
}

void CopyCel::onExecute()
{
  LayerImage* srcLayer = static_cast<LayerImage*>(m_srcLayer.layer());
  LayerImage* dstLayer = static_cast<LayerImage*>(m_dstLayer.layer());

  ASSERT(srcLayer);
  ASSERT(dstLayer);

  Sprite* srcSprite = srcLayer->sprite();
  Sprite* dstSprite = dstLayer->sprite();
  ASSERT(srcSprite);
  ASSERT(dstSprite);
  ASSERT(m_srcFrame >= 0 && m_srcFrame < srcSprite->totalFrames());
  ASSERT(m_dstFrame >= 0);
  (void)srcSprite;              // To avoid unused variable warning on Release mode

  Cel* srcCel = srcLayer->cel(m_srcFrame);
  Cel* dstCel = dstLayer->cel(m_dstFrame);

  // Clear destination cel if it does exist. It'll be overriden by the
  // copy of srcCel.
  if (dstCel) {
    if (dstCel->links())
      executeAndAdd(new cmd::UnlinkCel(dstCel));
    executeAndAdd(new cmd::ClearCel(dstCel));
  }

  // Add empty frames until newFrame
  while (dstSprite->totalFrames() <= m_dstFrame)
    executeAndAdd(new cmd::AddFrame(dstSprite, dstSprite->totalFrames()));

  Image* srcImage = (srcCel ? srcCel->image(): NULL);
  ImageRef dstImage;
  dstCel = dstLayer->cel(m_dstFrame);
  if (dstCel)
    dstImage = dstCel->imageRef();

  bool createLink =
    (srcLayer == dstLayer && dstLayer->isContinuous());

  // For background layer
  if (dstLayer->isBackground()) {
    ASSERT(dstCel);
    ASSERT(dstImage);
    if (!dstCel || !dstImage ||
        !srcCel || !srcImage)
      return;

    if (createLink) {
      executeAndAdd(new cmd::SetCelData(dstCel, srcCel->dataRef()));
    }
    else {
      BlendMode blend = (srcLayer->isBackground() ?
                         BlendMode::SRC:
                         BlendMode::NORMAL);

      ImageRef tmp(Image::createCopy(dstImage.get()));
      render::composite_image(tmp.get(), srcImage,
                              srcCel->x(), srcCel->y(), 255, blend);
      executeAndAdd(new cmd::CopyRect(dstImage.get(), tmp.get(), gfx::Clip(tmp->bounds())));
    }
  }
  // For transparent layers
  else {
    if (dstCel)
      executeAndAdd(new cmd::RemoveCel(dstCel));

    if (srcCel) {
      if (createLink)
        dstCel = Cel::createLink(srcCel);
      else
        dstCel = Cel::createCopy(srcCel);
      dstCel->setFrame(m_dstFrame);

      executeAndAdd(new cmd::AddCel(dstLayer, dstCel));
    }
  }
}

bool FliFormat::onLoad(FileOp* fop)
{
#define SETPAL()                                                \
  do {                                                          \
      for (c=0; c<256; c++) {                                   \
        pal->setEntry(c, _rgba(cmap[c*3],                       \
                               cmap[c*3+1],                     \
                               cmap[c*3+2], 255));              \
      }                                                         \
      pal->setFrame(frpos_out);                                 \
      sprite->setPalette(pal, true);                            \
    } while (0)

  unsigned char cmap[768];
  unsigned char omap[768];
  s_fli_header fli_header;
  Image *bmp, *old, *image;
  Sprite *sprite;
  LayerImage *layer;
  Palette *pal;
  int c, w, h;
  FrameNumber frpos_in;
  FrameNumber frpos_out;
  int index = 0;
  Cel *cel;

  /* open the file to read in binary mode */
  FileHandle f(fop->filename.c_str(), "rb");

  fli_read_header(f, &fli_header);
  fseek(f, 128, SEEK_SET);

  if (fli_header.magic == NO_HEADER) {
    fop_error(fop, "The file doesn't have a FLIC header\n");
    return false;
  }

  /* size by frame */
  w = fli_header.width;
  h = fli_header.height;

  /* create the bitmaps */
  bmp = Image::create(IMAGE_INDEXED, w, h);
  old = Image::create(IMAGE_INDEXED, w, h);
  pal = new Palette(FrameNumber(0), 256);
  if (!bmp || !old || !pal) {
    fop_error(fop, "Not enough memory.\n");
    if (bmp) image_free(bmp);
    if (old) image_free(old);
    if (pal) delete pal;
    return false;
  }

  // Create the image
  sprite = new Sprite(IMAGE_INDEXED, w, h, 256);
  layer = new LayerImage(sprite);
  sprite->getFolder()->addLayer(layer);
  layer->configureAsBackground();

  // Set frames and speed
  sprite->setTotalFrames(FrameNumber(fli_header.frames));
  sprite->setDurationForAllFrames(fli_header.speed);

  /* write frame by frame */
  for (frpos_in = frpos_out = FrameNumber(0);
       frpos_in < sprite->getTotalFrames();
       ++frpos_in) {
    /* read the frame */
    fli_read_frame(f, &fli_header,
                   (unsigned char *)old->dat, omap,
                   (unsigned char *)bmp->dat, cmap);

    /* first frame, or the frames changes, or the palette changes */
    if ((frpos_in == 0) ||
        (image_count_diff(old, bmp))
#ifndef USE_LINK /* TODO this should be configurable through a check-box */
        || (memcmp(omap, cmap, 768) != 0)
#endif
        ) {
      /* the image changes? */
      if (frpos_in != 0)
        ++frpos_out;

      /* add the new frame */
      image = Image::createCopy(bmp);
      if (!image) {
        fop_error(fop, "Not enough memory\n");
        break;
      }

      index = sprite->getStock()->addImage(image);
      if (index < 0) {
        image_free(image);
        fop_error(fop, "Not enough memory\n");
        break;
      }

      cel = new Cel(frpos_out, index);
      layer->addCel(cel);

//.........这里部分代码省略.........

//.........这里部分代码省略.........

  if (bg == 4) // Convert old default (Background color) to new default (Black)
    bg = 1;
  bg = MID(0, bg, 3);

  // If the clipboard contains an image, we can show the size of the
  // clipboard as default image size.
  gfx::Size clipboardSize;
  if (clipboard::get_image_size(clipboardSize)) {
    w = clipboardSize.w;
    h = clipboardSize.h;
  }

  window.width()->setTextf("%d", MAX(1, w));
  window.height()->setTextf("%d", MAX(1, h));

  // Select image-type
  switch (format) {
    case IMAGE_RGB:       window.rgbMode()->setSelected(true); break;
    case IMAGE_GRAYSCALE: window.grayscaleMode()->setSelected(true); break;
    case IMAGE_INDEXED:   window.indexedMode()->setSelected(true); break;
  }

  // Select background color
  window.bgBox()->selectIndex(bg);

  // Open the window
  window.openWindowInForeground();

  if (window.getKiller() == window.okButton()) {
    bool ok = false;

    // Get the options
    if (window.rgbMode()->isSelected())
      format = IMAGE_RGB;
    else if (window.grayscaleMode()->isSelected())
      format = IMAGE_GRAYSCALE;
    else if (window.indexedMode()->isSelected())
      format = IMAGE_INDEXED;

    w = window.width()->getTextInt();
    h = window.height()->getTextInt();
    bg = window.bgBox()->getSelectedIndex();

    w = MID(1, w, 65535);
    h = MID(1, h, 65535);

    // Select the color
    app::Color color = app::Color::fromMask();

    if (bg >= 0 && bg <= 3) {
      color = bg_table[bg];
      ok = true;
    }

    if (ok) {
      // Save the configuration
      set_config_int("NewSprite", "Type", format);
      set_config_int("NewSprite", "Width", w);
      set_config_int("NewSprite", "Height", h);
      set_config_int("NewSprite", "Background", bg);

      // Create the new sprite
      ASSERT(format == IMAGE_RGB || format == IMAGE_GRAYSCALE || format == IMAGE_INDEXED);
      ASSERT(w > 0 && h > 0);

      base::UniquePtr<Sprite> sprite(Sprite::createBasicSprite(format, w, h, ncolors));

      if (sprite->pixelFormat() != IMAGE_GRAYSCALE)
        get_default_palette()->copyColorsTo(sprite->palette(frame_t(0)));

      // If the background color isn't transparent, we have to
      // convert the `Layer 1' in a `Background'
      if (color.getType() != app::Color::MaskType) {
        Layer* layer = sprite->folder()->getFirstLayer();

        if (layer && layer->isImage()) {
          LayerImage* layerImage = static_cast<LayerImage*>(layer);
          layerImage->configureAsBackground();

          Image* image = layerImage->cel(frame_t(0))->image();
          doc::clear_image(image,
            color_utils::color_for_target(color,
              ColorTarget(
                ColorTarget::BackgroundLayer,
                sprite->pixelFormat(),
                sprite->transparentColor())));
        }
      }

      // Show the sprite to the user
      base::UniquePtr<Document> doc(new Document(sprite));
      sprite.release();
      sprintf(buf, "Sprite-%04d", ++_sprite_counter);
      doc->setFilename(buf);
      doc->setContext(context);
      doc.release();
    }
  }
}