105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
// This is an open source non-commercial project. Dear PVS-Studio, please check it.
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// PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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/**
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* @file llloadingindicator.cpp
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* @brief Perpetual loading indicator
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*
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* $LicenseInfo:firstyear=2010&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "llloadingindicator.h"
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// Linden library includes
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#include "llsingleton.h"
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// Project includes
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#include "lluictrlfactory.h"
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#include "lluiimage.h"
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static LLRegisterWidget<LLLoadingIndicator> r("loading_indicator");
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///////////////////////////////////////////////////////////////////////////////
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// LLLoadingIndicator class
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///////////////////////////////////////////////////////////////////////////////
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LLLoadingIndicator::LLLoadingIndicator(const Params& p)
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: LLUICtrl(p),
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mImagesPerSec(p.images_per_sec > 0 ? p.images_per_sec : 1.0f),
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mCurImageIdx(0)
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{
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}
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void LLLoadingIndicator::initFromParams(const Params& p)
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{
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for (LLUIImage* image : p.images().image)
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{
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mImages.push_back(image);
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}
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if (mImages.empty()) // Singu Note: We don't have default widgets yet, so let's just handle this here
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for (int i = 1; i <= 12; ++i)
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mImages.push_back(LLUI::getUIImage(llformat("Progress_%d", i)));
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// Start timer for switching images.
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start();
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}
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void LLLoadingIndicator::draw()
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{
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// Time to switch to the next image?
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if (mImageSwitchTimer.getStarted() && mImageSwitchTimer.hasExpired())
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{
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// Switch to the next image.
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if (!mImages.empty())
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{
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mCurImageIdx = (mCurImageIdx + 1) % mImages.size();
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}
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// Restart timer.
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start();
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}
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LLUIImagePtr cur_image = mImages.empty() ? LLUIImagePtr(NULL) : mImages[mCurImageIdx];
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// Draw current image.
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if( cur_image.notNull() )
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{
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cur_image->draw(getLocalRect(), LLColor4::white % getDrawContext().mAlpha);
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}
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LLUICtrl::draw();
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}
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void LLLoadingIndicator::stop()
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{
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mImageSwitchTimer.stop();
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}
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void LLLoadingIndicator::start()
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{
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mImageSwitchTimer.start();
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F32 period = 1.0f / (mImages.size() * mImagesPerSec);
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mImageSwitchTimer.setTimerExpirySec(period);
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}
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