llstatbar.cpp

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#include "llviewerprecompiledheaders.h"

#include "llstatbar.h"

#include "llmath.h"
#include "llui.h"
#include "llgl.h"
#include "llfontgl.h"

#include "llstat.h"


LLStatBar::LLStatBar(const std::string& name, const LLRect& rect)
                :       LLView(name, rect, TRUE)
{
        mMinBar = 0.f;
        mMaxBar = 50.f;
        mStatp = NULL;
        mTickSpacing = 10.f;
        mLabelSpacing = 10.f;
        mPrecision = 0;
        mUpdatesPerSec = 5;
        mLabel = name;
        mPerSec = TRUE;
        mValue = 0.f;
        mDisplayBar = TRUE;
        mDisplayHistory = FALSE;
        mDisplayMean = TRUE;
}

BOOL LLStatBar::handleMouseDown(S32 x, S32 y, MASK mask)
{
        if (mDisplayBar)
        {
                if (mDisplayHistory)
                {
                        mDisplayBar = FALSE;
                        mDisplayHistory = FALSE;
                }
                else
                {
                        mDisplayHistory = TRUE;
                }
        }
        else
        {
                mDisplayBar = TRUE;
        }

        LLView* parent = getParent();
        parent->reshape(parent->getRect().getWidth(), parent->getRect().getHeight(), FALSE);

        return FALSE;
}

void LLStatBar::draw()
{
        if (!mStatp)
        {
//              llinfos << "No stats for statistics bar!" << llendl;
                return;
        }

        // Get the values.
        F32 current, min, max, mean;
        if (mPerSec)
        {
                current = mStatp->getCurrentPerSec();
                min = mStatp->getMinPerSec();
                max = mStatp->getMaxPerSec();
                mean = mStatp->getMeanPerSec();
        }
        else
        {
                current = mStatp->getCurrent();
                min = mStatp->getMin();
                max = mStatp->getMax();
                mean = mStatp->getMean();
        }


        if ((mUpdatesPerSec == 0.f) || (mUpdateTimer.getElapsedTimeF32() > 1.f/mUpdatesPerSec) || (mValue == 0.f))
        {
                if (mDisplayMean)
                {
                        mValue = mean;
                }
                else
                {
                        mValue = current;
                }
                mUpdateTimer.reset();
        }

        S32 width = getRect().getWidth() - 40;
        S32 max_width = width;
        S32 bar_top = getRect().getHeight() - 15; // 16 pixels from top.
        S32 bar_height = bar_top - 20;
        S32 tick_height = 4;
        S32 tick_width = 1;
        S32 left, top, right, bottom;

        F32 value_scale = max_width/(mMaxBar - mMinBar);

        LLFontGL::sMonospace->renderUTF8(mLabel, 0, 0, getRect().getHeight(), LLColor4(1.f, 1.f, 1.f, 1.f),
                                                        LLFontGL::LEFT, LLFontGL::TOP);

        char value_format[64];          /* Flawfinder: ignore */
        char value_str[256];            /* Flawfinder: ignore */
        if (!mUnitLabel.empty())
        {
                snprintf(value_format, sizeof(value_format), "%%.%df%%s", mPrecision);          /* Flawfinder: ignore */
                snprintf(value_str, sizeof(value_str), value_format, mValue, mUnitLabel.c_str());               /* Flawfinder: ignore */
        }
        else
        {
                snprintf(value_format, sizeof(value_format), "%%.%df", mPrecision);             /* Flawfinder: ignore */
                snprintf(value_str, sizeof(value_str), value_format, mValue);           /* Flawfinder: ignore */
        }

        // Draw the value.
        LLFontGL::sMonospace->renderUTF8(value_str, 0, width, getRect().getHeight(), 
                LLColor4(1.f, 1.f, 1.f, 0.5f),
                LLFontGL::RIGHT, LLFontGL::TOP);

        snprintf(value_format, sizeof(value_format), "%%.%df", mPrecision);             /* Flawfinder: ignore */
        if (mDisplayBar)
        {
                char tick_label[256];           /* Flawfinder: ignore */

                // Draw the tick marks.
                F32 tick_value;
                top = bar_top;
                bottom = bar_top - bar_height - tick_height/2;

                LLGLSUIDefault gls_ui;
                LLGLSNoTexture gls_no_texture;
                for (tick_value = mMinBar; tick_value <= mMaxBar; tick_value += mTickSpacing)
                {
                        left = llfloor((tick_value - mMinBar)*value_scale);
                        right = left + tick_width;
                        gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 1.f, 1.f, 0.1f));
                }

                // Draw the tick labels (and big ticks).
                bottom = bar_top - bar_height - tick_height;
                for (tick_value = mMinBar; tick_value <= mMaxBar; tick_value += mLabelSpacing)
                {
                        left = llfloor((tick_value - mMinBar)*value_scale);
                        right = left + tick_width;
                        gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 1.f, 1.f, 0.25f));

                        snprintf(tick_label, sizeof(tick_label), value_format, tick_value);             /* Flawfinder: ignore */
                        // draw labels for the tick marks
                        LLFontGL::sMonospace->renderUTF8(tick_label, 0, left - 1, bar_top - bar_height - tick_height,
                                                                                         LLColor4(1.f, 1.f, 1.f, 0.5f),
                                                                                         LLFontGL::LEFT, LLFontGL::TOP);
                }

                // Now, draw the bars
                top = bar_top;
                bottom = bar_top - bar_height;

                // draw background bar.
                left = 0;
                right = width;
                gl_rect_2d(left, top, right, bottom, LLColor4(0.f, 0.f, 0.f, 0.25f));

                if (mStatp->getNumValues() == 0)
                {
                        // No data, don't draw anything...
                        return;
                }
                // draw min and max
                left = (S32) ((min - mMinBar) * value_scale);

                if (left < 0)
                {
                        left = 0;
                        llwarns << "Min:" << min << llendl;
                }

                right = (S32) ((max - mMinBar) * value_scale);
                gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 0.f, 0.f, 0.25f));

                S32 num_values = mStatp->getNumValues() - 1;
                if (mDisplayHistory)
                {
                        S32 i;
                        for (i = 0; i < num_values; i++)
                        {
                                if (i == mStatp->getNextBin())
                                {
                                        continue;
                                }
                                if (mPerSec)
                                {
                                        left = (S32)((mStatp->getPrevPerSec(i) - mMinBar) * value_scale);
                                        right = (S32)((mStatp->getPrevPerSec(i) - mMinBar) * value_scale) + 1;
                                        gl_rect_2d(left, bottom+i+1, right, bottom+i, LLColor4(1.f, 0.f, 0.f, 1.f));
                                }
                                else
                                {
                                        left = (S32)((mStatp->getPrev(i) - mMinBar) * value_scale);
                                        right = (S32)((mStatp->getPrev(i) - mMinBar) * value_scale) + 1;
                                        gl_rect_2d(left, bottom+i+1, right, bottom+i, LLColor4(1.f, 0.f, 0.f, 1.f));
                                }
                        }
                }
                else
                {
                        // draw current
                        left = (S32) ((current - mMinBar) * value_scale) - 1;
                        right = (S32) ((current - mMinBar) * value_scale) + 1;
                        gl_rect_2d(left, top, right, bottom, LLColor4(1.f, 0.f, 0.f, 1.f));
                }

                // draw mean bar
                top = bar_top + 2;
                bottom = bar_top - bar_height - 2;
                left = (S32) ((mean - mMinBar) * value_scale) - 1;
                right = (S32) ((mean - mMinBar) * value_scale) + 1;
                gl_rect_2d(left, top, right, bottom, LLColor4(0.f, 1.f, 0.f, 1.f));
        }
        
        LLView::draw();
}

const LLString& LLStatBar::getLabel() const
{
        return mLabel;
}

void LLStatBar::setLabel(const LLString& label)
{
        mLabel = label;
}

void LLStatBar::setUnitLabel(const LLString& unit_label)
{
        mUnitLabel = unit_label;
}

LLRect LLStatBar::getRequiredRect()
{
        LLRect rect;

        if (mDisplayBar)
        {
                if (mDisplayHistory)
                {
                        rect.mTop = 67;
                }
                else
                {
                        rect.mTop = 40;
                }
        }
        else
        {
                rect.mTop = 14;
        }
        return rect;
}

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