Method requestImageUpdate

trunk/win/Source/BT_RSSPhotoFrameSource.cpp:216–274

}

void RSSPhotoFrameSource::requestImageUpdate()
{
	// don't start another transfer if one is already in progress
	if (ftManager->hasTransfersToHandler(this))
		return;

	// find the next image to load
	bool loadCurrent = !_items.empty() && _current.isValid();
	if (_current.isValid())
	{
		for (int i = 0; i < _items.size(); ++i)
		{
			// find the current item
			if (_items[i].equals(_current))
			{
				// get the next item 
				for (int j = 1; j < _items.size(); ++j)
				{
					int nextIndex = (i+j) % _items.size();
					if (_items[nextIndex].isValid())
					{
						_current = _items[nextIndex];	
						loadCurrent = true;
						break;
					}
				}
				break;
			}
		}
	}
	else if (!_items.empty())
	{
		_current = _items[0];
		loadCurrent = _current.isValid();		
	}

	if (loadCurrent)
	{
		if (exists(_current.getTexturePath()))
		{
			// load the image (so that it will swap)
			GLTextureObject obj(Load|Compress|Reload, _textureBufferId, _current.getTexturePath(), SampledImage, IdlePriority);
			texMgr->loadTexture(obj);

			// bump up image loaded count
			++_imageUpdateCount;
		}
		else
		{
			// download the image to a tmp filename
			QString tmpFilename = _current.getTexturePath() + QT_NT(".img_tmp");
			ftManager->addTransfer(FileTransfer(FileTransfer::Download, this)
				.setUrl(_current.getResourceId())
				.setUserData(new bool(true))
				.setLocalPath(tmpFilename), false
				);
		}
	}