/** * @file llloadingindicator.h * @brief Perpetual loading indicator * * $LicenseInfo:firstyear=2010&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLLOADINGINDICATOR_H #define LL_LLLOADINGINDICATOR_H #include "lluictrl.h" #include "lluiimage.h" /////////////////////////////////////////////////////////////////////////////// // class LLLoadingIndicator /////////////////////////////////////////////////////////////////////////////// /** * Perpetual loading indicator (a la MacOSX or YouTube) * * Number of rotations per second can be overridden * with the "images_per_sec" parameter. * * Can start/stop spinning. * * @see start() * @see stop() */ class LLLoadingIndicator : public LLUICtrl { LOG_CLASS(LLLoadingIndicator); public: struct Images : public LLInitParam::Block<Images> { Multiple<LLUIImage*> image; Images() : image("image") {} }; struct Params : public LLInitParam::Block<Params, LLUICtrl::Params> { Optional<F32> images_per_sec; Optional<Atomic<Images> > images; Params() : images_per_sec("images_per_sec", 1.0f), images("images") {} }; virtual ~LLLoadingIndicator() {} // llview overrides virtual void draw(); /** * Stop spinning. */ void stop(); /** * Start spinning. */ void start(); void reset() { mCurImageIdx = 0; } private: LLLoadingIndicator(const Params&); void initFromParams(const Params&); friend class LLUICtrlFactory; F32 mImagesPerSec; S8 mCurImageIdx; LLFrameTimer mImageSwitchTimer; std::vector<LLUIImagePtr> mImages; }; #endif // LL_LLLOADINGINDICATOR_H