/**
 * @file llstatgraph.cpp
 * @brief Simpler compact stat graph with tooltip
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

//#include "llviewerprecompiledheaders.h"
#include "linden_common.h"

#include "llstatgraph.h"
#include "llrender.h"

#include "llmath.h"
#include "llui.h"
#include "llgl.h"
#include "llglheaders.h"
#include "lltracerecording.h"
#include "lltracethreadrecorder.h"

///////////////////////////////////////////////////////////////////////////////////

LLStatGraph::LLStatGraph(const Params& p)
:   LLView(p),
    mMin(p.min),
    mMax(p.max),
    mPerSec(p.per_sec),
    mPrecision(p.precision),
    mValue(p.value),
    mUnits(p.units),
    mNewStatFloatp(p.stat.count_stat_float)
{
    setToolTip(p.name());

    for(LLInitParam::ParamIterator<ThresholdParams>::const_iterator it = p.thresholds.threshold.begin(), end_it = p.thresholds.threshold.end();
        it != end_it;
        ++it)
    {
        mThresholds.push_back(Threshold(it->value(), it->color));
    }
}

void LLStatGraph::draw()
{
    F32 range, frac;
    range = mMax - mMin;
    if (mNewStatFloatp)
    {
        LLTrace::Recording& recording = LLTrace::get_frame_recording().getLastRecording();

        if (mPerSec)
        {
            mValue = (F32)recording.getPerSec(*mNewStatFloatp);
        }
        else
        {
            mValue = (F32)recording.getSum(*mNewStatFloatp);
        }
    }

    frac = (mValue - mMin) / range;
    frac = llmax(0.f, frac);
    frac = llmin(1.f, frac);

    if (mUpdateTimer.getElapsedTimeF32() > 0.5f)
    {
        std::string format_str;
        std::string tmp_str;
        format_str = llformat("%%s%%.%df%%s", mPrecision);
        tmp_str = llformat(format_str.c_str(), mLabel.c_str(), mValue, mUnits.c_str());
        setToolTip(tmp_str);

        mUpdateTimer.reset();
    }

    threshold_vec_t::iterator it = std::lower_bound(mThresholds.begin(), mThresholds.end(), Threshold(mValue / mMax, LLUIColor()));

    if (it != mThresholds.begin())
    {
        it--;
    }

    static LLUIColor default_color = LLUIColorTable::instance().getColor( "MenuDefaultBgColor" );
    gGL.color4fv(default_color.get().mV);
    gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, true);

    gGL.color4fv(LLColor4::black.mV);
    gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, false);

    gGL.color4fv(it->mColor().mV);
    gl_rect_2d(1, ll_round(frac*getRect().getHeight()), getRect().getWidth() - 1, 0, true);
}

void LLStatGraph::setMin(const F32 min)
{
    mMin = min;
}

void LLStatGraph::setMax(const F32 max)
{
    mMax = max;
}