Examples with Transformer com.github.mikephil.charting.utils.Transformer used on opensource projects

Example 6 with Transformer

use of com.github.mikephil.charting.utils.Transformer in project MPAndroidChart by PhilJay.

the class BarChartRenderer method drawValues.

@Override
public void drawValues(Canvas c) {
    // if values are drawn
    if (isDrawingValuesAllowed(mChart)) {
        List<IBarDataSet> dataSets = mChart.getBarData().getDataSets();
        final float valueOffsetPlus = Utils.convertDpToPixel(4.5f);
        float posOffset = 0f;
        float negOffset = 0f;
        boolean drawValueAboveBar = mChart.isDrawValueAboveBarEnabled();
        for (int i = 0; i < mChart.getBarData().getDataSetCount(); i++) {
            IBarDataSet dataSet = dataSets.get(i);
            if (!shouldDrawValues(dataSet))
                continue;
            // apply the text-styling defined by the DataSet
            applyValueTextStyle(dataSet);
            boolean isInverted = mChart.isInverted(dataSet.getAxisDependency());
            // calculate the correct offset depending on the draw position of
            // the value
            float valueTextHeight = Utils.calcTextHeight(mValuePaint, "8");
            posOffset = (drawValueAboveBar ? -valueOffsetPlus : valueTextHeight + valueOffsetPlus);
            negOffset = (drawValueAboveBar ? valueTextHeight + valueOffsetPlus : -valueOffsetPlus);
            if (isInverted) {
                posOffset = -posOffset - valueTextHeight;
                negOffset = -negOffset - valueTextHeight;
            }
            // get the buffer
            BarBuffer buffer = mBarBuffers[i];
            final float phaseY = mAnimator.getPhaseY();
            MPPointF iconsOffset = MPPointF.getInstance(dataSet.getIconsOffset());
            iconsOffset.x = Utils.convertDpToPixel(iconsOffset.x);
            iconsOffset.y = Utils.convertDpToPixel(iconsOffset.y);
            // if only single values are drawn (sum)
            if (!dataSet.isStacked()) {
                for (int j = 0; j < buffer.buffer.length * mAnimator.getPhaseX(); j += 4) {
                    float x = (buffer.buffer[j] + buffer.buffer[j + 2]) / 2f;
                    if (!mViewPortHandler.isInBoundsRight(x))
                        break;
                    if (!mViewPortHandler.isInBoundsY(buffer.buffer[j + 1]) || !mViewPortHandler.isInBoundsLeft(x))
                        continue;
                    BarEntry entry = dataSet.getEntryForIndex(j / 4);
                    float val = entry.getY();
                    if (dataSet.isDrawValuesEnabled()) {
                        drawValue(c, dataSet.getValueFormatter(), val, entry, i, x, val >= 0 ? (buffer.buffer[j + 1] + posOffset) : (buffer.buffer[j + 3] + negOffset), dataSet.getValueTextColor(j / 4));
                    }
                    if (entry.getIcon() != null && dataSet.isDrawIconsEnabled()) {
                        Drawable icon = entry.getIcon();
                        float px = x;
                        float py = val >= 0 ? (buffer.buffer[j + 1] + posOffset) : (buffer.buffer[j + 3] + negOffset);
                        px += iconsOffset.x;
                        py += iconsOffset.y;
                        Utils.drawImage(c, icon, (int) px, (int) py, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
                    }
                }
            // if we have stacks
            } else {
                Transformer trans = mChart.getTransformer(dataSet.getAxisDependency());
                int bufferIndex = 0;
                int index = 0;
                while (index < dataSet.getEntryCount() * mAnimator.getPhaseX()) {
                    BarEntry entry = dataSet.getEntryForIndex(index);
                    float[] vals = entry.getYVals();
                    float x = (buffer.buffer[bufferIndex] + buffer.buffer[bufferIndex + 2]) / 2f;
                    int color = dataSet.getValueTextColor(index);
                    // in between
                    if (vals == null) {
                        if (!mViewPortHandler.isInBoundsRight(x))
                            break;
                        if (!mViewPortHandler.isInBoundsY(buffer.buffer[bufferIndex + 1]) || !mViewPortHandler.isInBoundsLeft(x))
                            continue;
                        if (dataSet.isDrawValuesEnabled()) {
                            drawValue(c, dataSet.getValueFormatter(), entry.getY(), entry, i, x, buffer.buffer[bufferIndex + 1] + (entry.getY() >= 0 ? posOffset : negOffset), color);
                        }
                        if (entry.getIcon() != null && dataSet.isDrawIconsEnabled()) {
                            Drawable icon = entry.getIcon();
                            float px = x;
                            float py = buffer.buffer[bufferIndex + 1] + (entry.getY() >= 0 ? posOffset : negOffset);
                            px += iconsOffset.x;
                            py += iconsOffset.y;
                            Utils.drawImage(c, icon, (int) px, (int) py, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
                        }
                    // draw stack values
                    } else {
                        float[] transformed = new float[vals.length * 2];
                        float posY = 0f;
                        float negY = -entry.getNegativeSum();
                        for (int k = 0, idx = 0; k < transformed.length; k += 2, idx++) {
                            float value = vals[idx];
                            float y;
                            if (value == 0.0f && (posY == 0.0f || negY == 0.0f)) {
                                // Take care of the situation of a 0.0 value, which overlaps a non-zero bar
                                y = value;
                            } else if (value >= 0.0f) {
                                posY += value;
                                y = posY;
                            } else {
                                y = negY;
                                negY -= value;
                            }
                            transformed[k + 1] = y * phaseY;
                        }
                        trans.pointValuesToPixel(transformed);
                        for (int k = 0; k < transformed.length; k += 2) {
                            final float val = vals[k / 2];
                            final boolean drawBelow = (val == 0.0f && negY == 0.0f && posY > 0.0f) || val < 0.0f;
                            float y = transformed[k + 1] + (drawBelow ? negOffset : posOffset);
                            if (!mViewPortHandler.isInBoundsRight(x))
                                break;
                            if (!mViewPortHandler.isInBoundsY(y) || !mViewPortHandler.isInBoundsLeft(x))
                                continue;
                            if (dataSet.isDrawValuesEnabled()) {
                                drawValue(c, dataSet.getValueFormatter(), vals[k / 2], entry, i, x, y, color);
                            }
                            if (entry.getIcon() != null && dataSet.isDrawIconsEnabled()) {
                                Drawable icon = entry.getIcon();
                                Utils.drawImage(c, icon, (int) (x + iconsOffset.x), (int) (y + iconsOffset.y), icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
                            }
                        }
                    }
                    bufferIndex = vals == null ? bufferIndex + 4 : bufferIndex + 4 * vals.length;
                    index++;
                }
            }
            MPPointF.recycleInstance(iconsOffset);
        }
    }
}

Example 7 with Transformer

use of com.github.mikephil.charting.utils.Transformer in project MPAndroidChart by PhilJay.

the class BubbleChartRenderer method drawDataSet.

protected void drawDataSet(Canvas c, IBubbleDataSet dataSet) {
    Transformer trans = mChart.getTransformer(dataSet.getAxisDependency());
    float phaseY = mAnimator.getPhaseY();
    mXBounds.set(mChart, dataSet);
    sizeBuffer[0] = 0f;
    sizeBuffer[2] = 1f;
    trans.pointValuesToPixel(sizeBuffer);
    boolean normalizeSize = dataSet.isNormalizeSizeEnabled();
    // calcualte the full width of 1 step on the x-axis
    final float maxBubbleWidth = Math.abs(sizeBuffer[2] - sizeBuffer[0]);
    final float maxBubbleHeight = Math.abs(mViewPortHandler.contentBottom() - mViewPortHandler.contentTop());
    final float referenceSize = Math.min(maxBubbleHeight, maxBubbleWidth);
    for (int j = mXBounds.min; j <= mXBounds.range + mXBounds.min; j++) {
        final BubbleEntry entry = dataSet.getEntryForIndex(j);
        pointBuffer[0] = entry.getX();
        pointBuffer[1] = (entry.getY()) * phaseY;
        trans.pointValuesToPixel(pointBuffer);
        float shapeHalf = getShapeSize(entry.getSize(), dataSet.getMaxSize(), referenceSize, normalizeSize) / 2f;
        if (!mViewPortHandler.isInBoundsTop(pointBuffer[1] + shapeHalf) || !mViewPortHandler.isInBoundsBottom(pointBuffer[1] - shapeHalf))
            continue;
        if (!mViewPortHandler.isInBoundsLeft(pointBuffer[0] + shapeHalf))
            continue;
        if (!mViewPortHandler.isInBoundsRight(pointBuffer[0] - shapeHalf))
            break;
        final int color = dataSet.getColor((int) entry.getX());
        mRenderPaint.setColor(color);
        c.drawCircle(pointBuffer[0], pointBuffer[1], shapeHalf, mRenderPaint);
    }
}

Example 8 with Transformer

use of com.github.mikephil.charting.utils.Transformer in project MPAndroidChart by PhilJay.

the class BubbleChartRenderer method drawHighlighted.

@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {
    BubbleData bubbleData = mChart.getBubbleData();
    float phaseY = mAnimator.getPhaseY();
    for (Highlight high : indices) {
        IBubbleDataSet set = bubbleData.getDataSetByIndex(high.getDataSetIndex());
        if (set == null || !set.isHighlightEnabled())
            continue;
        final BubbleEntry entry = set.getEntryForXValue(high.getX(), high.getY());
        if (entry.getY() != high.getY())
            continue;
        if (!isInBoundsX(entry, set))
            continue;
        Transformer trans = mChart.getTransformer(set.getAxisDependency());
        sizeBuffer[0] = 0f;
        sizeBuffer[2] = 1f;
        trans.pointValuesToPixel(sizeBuffer);
        boolean normalizeSize = set.isNormalizeSizeEnabled();
        // calcualte the full width of 1 step on the x-axis
        final float maxBubbleWidth = Math.abs(sizeBuffer[2] - sizeBuffer[0]);
        final float maxBubbleHeight = Math.abs(mViewPortHandler.contentBottom() - mViewPortHandler.contentTop());
        final float referenceSize = Math.min(maxBubbleHeight, maxBubbleWidth);
        pointBuffer[0] = entry.getX();
        pointBuffer[1] = (entry.getY()) * phaseY;
        trans.pointValuesToPixel(pointBuffer);
        high.setDraw(pointBuffer[0], pointBuffer[1]);
        float shapeHalf = getShapeSize(entry.getSize(), set.getMaxSize(), referenceSize, normalizeSize) / 2f;
        if (!mViewPortHandler.isInBoundsTop(pointBuffer[1] + shapeHalf) || !mViewPortHandler.isInBoundsBottom(pointBuffer[1] - shapeHalf))
            continue;
        if (!mViewPortHandler.isInBoundsLeft(pointBuffer[0] + shapeHalf))
            continue;
        if (!mViewPortHandler.isInBoundsRight(pointBuffer[0] - shapeHalf))
            break;
        final int originalColor = set.getColor((int) entry.getX());
        Color.RGBToHSV(Color.red(originalColor), Color.green(originalColor), Color.blue(originalColor), _hsvBuffer);
        _hsvBuffer[2] *= 0.5f;
        final int color = Color.HSVToColor(Color.alpha(originalColor), _hsvBuffer);
        mHighlightPaint.setColor(color);
        mHighlightPaint.setStrokeWidth(set.getHighlightCircleWidth());
        c.drawCircle(pointBuffer[0], pointBuffer[1], shapeHalf, mHighlightPaint);
    }
}

Example 9 with Transformer

use of com.github.mikephil.charting.utils.Transformer in project MPAndroidChart by PhilJay.

the class CandleStickChartRenderer method drawValues.

@Override
public void drawValues(Canvas c) {
    // if values are drawn
    if (isDrawingValuesAllowed(mChart)) {
        List<ICandleDataSet> dataSets = mChart.getCandleData().getDataSets();
        for (int i = 0; i < dataSets.size(); i++) {
            ICandleDataSet dataSet = dataSets.get(i);
            if (!shouldDrawValues(dataSet))
                continue;
            // apply the text-styling defined by the DataSet
            applyValueTextStyle(dataSet);
            Transformer trans = mChart.getTransformer(dataSet.getAxisDependency());
            mXBounds.set(mChart, dataSet);
            float[] positions = trans.generateTransformedValuesCandle(dataSet, mAnimator.getPhaseX(), mAnimator.getPhaseY(), mXBounds.min, mXBounds.max);
            float yOffset = Utils.convertDpToPixel(5f);
            MPPointF iconsOffset = MPPointF.getInstance(dataSet.getIconsOffset());
            iconsOffset.x = Utils.convertDpToPixel(iconsOffset.x);
            iconsOffset.y = Utils.convertDpToPixel(iconsOffset.y);
            for (int j = 0; j < positions.length; j += 2) {
                float x = positions[j];
                float y = positions[j + 1];
                if (!mViewPortHandler.isInBoundsRight(x))
                    break;
                if (!mViewPortHandler.isInBoundsLeft(x) || !mViewPortHandler.isInBoundsY(y))
                    continue;
                CandleEntry entry = dataSet.getEntryForIndex(j / 2 + mXBounds.min);
                if (dataSet.isDrawValuesEnabled()) {
                    drawValue(c, dataSet.getValueFormatter(), entry.getHigh(), entry, i, x, y - yOffset, dataSet.getValueTextColor(j / 2));
                }
                if (entry.getIcon() != null && dataSet.isDrawIconsEnabled()) {
                    Drawable icon = entry.getIcon();
                    Utils.drawImage(c, icon, (int) (x + iconsOffset.x), (int) (y + iconsOffset.y), icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
                }
            }
            MPPointF.recycleInstance(iconsOffset);
        }
    }
}

Example 10 with Transformer

use of com.github.mikephil.charting.utils.Transformer in project MPAndroidChart by PhilJay.

the class HorizontalBarChartRenderer method drawDataSet.

@Override
protected void drawDataSet(Canvas c, IBarDataSet dataSet, int index) {
    Transformer trans = mChart.getTransformer(dataSet.getAxisDependency());
    mBarBorderPaint.setColor(dataSet.getBarBorderColor());
    mBarBorderPaint.setStrokeWidth(Utils.convertDpToPixel(dataSet.getBarBorderWidth()));
    final boolean drawBorder = dataSet.getBarBorderWidth() > 0.f;
    float phaseX = mAnimator.getPhaseX();
    float phaseY = mAnimator.getPhaseY();
    // draw the bar shadow before the values
    if (mChart.isDrawBarShadowEnabled()) {
        mShadowPaint.setColor(dataSet.getBarShadowColor());
        BarData barData = mChart.getBarData();
        final float barWidth = barData.getBarWidth();
        final float barWidthHalf = barWidth / 2.0f;
        float x;
        for (int i = 0, count = Math.min((int) (Math.ceil((float) (dataSet.getEntryCount()) * phaseX)), dataSet.getEntryCount()); i < count; i++) {
            BarEntry e = dataSet.getEntryForIndex(i);
            x = e.getX();
            mBarShadowRectBuffer.top = x - barWidthHalf;
            mBarShadowRectBuffer.bottom = x + barWidthHalf;
            trans.rectValueToPixel(mBarShadowRectBuffer);
            if (!mViewPortHandler.isInBoundsTop(mBarShadowRectBuffer.bottom))
                continue;
            if (!mViewPortHandler.isInBoundsBottom(mBarShadowRectBuffer.top))
                break;
            mBarShadowRectBuffer.left = mViewPortHandler.contentLeft();
            mBarShadowRectBuffer.right = mViewPortHandler.contentRight();
            c.drawRect(mBarShadowRectBuffer, mShadowPaint);
        }
    }
    // initialize the buffer
    BarBuffer buffer = mBarBuffers[index];
    buffer.setPhases(phaseX, phaseY);
    buffer.setDataSet(index);
    buffer.setInverted(mChart.isInverted(dataSet.getAxisDependency()));
    buffer.setBarWidth(mChart.getBarData().getBarWidth());
    buffer.feed(dataSet);
    trans.pointValuesToPixel(buffer.buffer);
    final boolean isSingleColor = dataSet.getColors().size() == 1;
    if (isSingleColor) {
        mRenderPaint.setColor(dataSet.getColor());
    }
    for (int j = 0; j < buffer.size(); j += 4) {
        if (!mViewPortHandler.isInBoundsTop(buffer.buffer[j + 3]))
            break;
        if (!mViewPortHandler.isInBoundsBottom(buffer.buffer[j + 1]))
            continue;
        if (!isSingleColor) {
            // Set the color for the currently drawn value. If the index
            // is out of bounds, reuse colors.
            mRenderPaint.setColor(dataSet.getColor(j / 4));
        }
        c.drawRect(buffer.buffer[j], buffer.buffer[j + 1], buffer.buffer[j + 2], buffer.buffer[j + 3], mRenderPaint);
        if (drawBorder) {
            c.drawRect(buffer.buffer[j], buffer.buffer[j + 1], buffer.buffer[j + 2], buffer.buffer[j + 3], mBarBorderPaint);
        }
    }
}