Example usage for android.graphics Canvas drawLine

Introduction

In this page you can find the example usage for android.graphics Canvas drawLine.

Prototype

public void drawLine(float startX, float startY, float stopX, float stopY, @NonNull Paint paint) 

Source Link

Document

Draw a line segment with the specified start and stop x,y coordinates, using the specified paint.

Usage

From source file:com.example.yh.myapplication.widget.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;//from   www  . j  a v a2 s  .  co  m
    }

    final int height = getHeight();

    // draw indicator line

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates
    // between current and next tab
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    int marginH = 60;
    if (tabCount <= 2) {
        marginH = 140;
    }
    canvas.drawRect(lineLeft + marginH, height - indicatorHeight, lineRight - marginH, height, rectPaint);

    // draw underline

    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:com.jjoe64.graphview.GridLabelRenderer.java

/**
 * draws the vertical steps/* www.  jav  a 2s  . c  om*/
 * horizontal lines and vertical labels
 *
 * @param canvas canvas
 */
protected void drawVerticalSteps(Canvas canvas) {
    // draw vertical steps (horizontal lines and vertical labels)
    float startLeft = mGraphView.getGraphContentLeft();
    mPaintLabel.setColor(getVerticalLabelsColor());
    mPaintLabel.setTextAlign(getVerticalLabelsAlign());
    for (Map.Entry<Integer, Double> e : mStepsVertical.entrySet()) {
        // draw line
        if (mStyles.highlightZeroLines) {
            if (e.getValue() == 0d) {
                mPaintLine.setStrokeWidth(5);
            } else {
                mPaintLine.setStrokeWidth(0);
            }
        }
        if (mStyles.gridStyle.drawHorizontal()) {
            canvas.drawLine(startLeft, e.getKey(), startLeft + mGraphView.getGraphContentWidth(), e.getKey(),
                    mPaintLine);
        }

        // draw label
        if (isVerticalLabelsVisible()) {
            int labelsWidth = mLabelVerticalWidth;
            int labelsOffset = 0;
            if (getVerticalLabelsAlign() == Paint.Align.RIGHT) {
                labelsOffset = labelsWidth;
                labelsOffset -= mStyles.labelsSpace;
            } else if (getVerticalLabelsAlign() == Paint.Align.CENTER) {
                labelsOffset = labelsWidth / 2;
            }
            labelsOffset += mStyles.padding + getVerticalAxisTitleWidth();

            float y = e.getKey();

            String label = mLabelFormatter.formatLabel(e.getValue(), false);
            if (label == null) {
                label = "";
            }
            String[] lines = label.split("\n");
            y += (lines.length * getTextSize() * 1.1f) / 2; // center text vertically
            for (int li = 0; li < lines.length; li++) {
                // for the last line y = height
                float y2 = y - (lines.length - li - 1) * getTextSize() * 1.1f;
                canvas.drawText(lines[li], labelsOffset, y2, mPaintLabel);
            }
        }
    }
}

---

From source file:com.tedkim.android.tviews.slidingtab.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;/* ww w  .  j a  v  a  2  s.c om*/
    }

    final int height = getHeight();

    // draw indicator line

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates between current and next tab
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);
    //      canvas.drawRect(lineLeft, 0, lineRight, indicatorHeight, rectPaint);//@justlikehee  ?? ??  

    // draw underline

    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:com.mingle.discolor.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;//from   ww w.j  a  v a  2s. c  om
    }

    final int height = getHeight();

    // draw indicator line

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates
    // between current and next tab
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);
    // draw underline
    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:com.yiqixue.utils.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;/*from w w  w  . j  a  v a 2 s . co  m*/
    }

    final int height = getHeight();

    // draw underline
    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

    // draw indicator line
    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates
    // between current and next tab
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    //+x  indicator 
    canvas.drawRect(lineLeft + getResources().getDimension(R.dimen.indicator_margin), height - indicatorHeight,
            lineRight - getResources().getDimension(R.dimen.indicator_margin), height, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:com.liushengfan.test.customerviewgroup.view.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;//from w w  w  .jav  a2 s  .  c o  m
    }

    final int height = getHeight();

    // draw indicator line

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates
    // between current and next tab
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);

    // draw underline

    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);
    canvas.drawRect(0, 0, tabsContainer.getWidth(), underlineHeight, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:net.droidsolutions.droidcharts.core.renderer.AbstractCategoryItemRenderer.java

/**
 * Draws a grid line against the range axis.
 * /*from  w  w w . j a v  a  2  s.  c  o  m*/
 * @param g2
 *            the graphics device.
 * @param plot
 *            the plot.
 * @param axis
 *            the value axis.
 * @param dataArea
 *            the area for plotting data (not yet adjusted for any 3D
 *            effect).
 * @param value
 *            the value at which the grid line should be drawn.
 * 
 * @see #drawDomainGridline(Graphics2D, CategoryPlot, Rectangle2D, double)
 */
public void drawRangeGridline(Canvas g2, CategoryPlot plot, ValueAxis axis, Rectangle2D dataArea,
        double value) {

    Range range = axis.getRange();
    if (!range.contains(value)) {
        return;
    }

    PlotOrientation orientation = plot.getOrientation();
    double v = axis.valueToJava2D(value, dataArea, plot.getRangeAxisEdge());
    Line2D line = null;
    if (orientation == PlotOrientation.HORIZONTAL) {
        line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY());
    } else if (orientation == PlotOrientation.VERTICAL) {
        line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v);
    }

    Paint paint = plot.getRangeGridlinePaint();
    if (paint == null) {
        paint = CategoryPlot.DEFAULT_GRIDLINE_PAINT;
    }

    float stroke = plot.getRangeGridlineStroke();

    paint.setStrokeWidth(stroke);
    g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint);

}

---

From source file:com.hcy.suzhoubusquery.utils.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;/*w  ww  . j  ava  2s . c om*/
    }

    final int height = getHeight();

    // draw underline

    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, 0, tabsContainer.getWidth(), underlineHeight, rectPaint);

    // draw indicator line

    //        rectPaint.setColor(indicatorColor);
    //
    //        // default: line below current tab
    //        View currentTab = tabsContainer.getChildAt(currentPosition);
    //        float lineLeft = currentTab.getLeft();
    //        float lineRight = currentTab.getRight();
    //
    //        // if there is an offset, start interpolating left and right coordinates between current and next tab
    //        if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {
    //
    //            View nextTab = tabsContainer.getChildAt(currentPosition + 1);
    //            final float nextTabLeft = nextTab.getLeft();
    //            final float nextTabRight = nextTab.getRight();
    //
    //            lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
    //            lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    //        }
    //
    //        canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:scroll.com.rdemo.scroll.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;/*from ww w .  j a v  a  2  s.  c om*/
    }

    final int height = getHeight();

    // draw indicator line

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates between current and next tab
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    canvas.drawRect(lineLeft + 10, height - indicatorHeight, lineRight - 10, height, rectPaint);

    // draw underline

    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

    // draw divider

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }

}

---

From source file:com.cssweb.android.view.FTrendView.java

public void drawChart(Canvas canvas) throws JSONException {
    paint = new Paint(Paint.ANTI_ALIAS_FLAG); //
    paint.setStyle(Paint.Style.STROKE);
    paint.setStrokeWidth(1);/*w  w w  .j  a va  2 s . c o m*/
    tPaint = new Paint();
    tPaint.setStyle(Paint.Style.STROKE);
    tPaint.setTypeface(Typeface.DEFAULT_BOLD);
    tPaint.setAntiAlias(true); //
    dataPaint = new Paint(Paint.ANTI_ALIAS_FLAG); //
    dataPaint.setStyle(Paint.Style.STROKE);
    dataPaint.setStrokeWidth(3);
    tPaint.setTextSize(dTextSize);
    axisLabelHeight = Font.getFontHeight(dTextSize);
    axisLabelWidth = (int) tPaint.measureText("0.00000") + offSet;
    klineWidth = width - axisLabelWidth;
    klineHeight = height - axisLabelHeight * 2 - iSLowerScreen;
    klineX = axisLabelWidth;
    klineY = axisLabelHeight;

    SPACE = Arith.div(klineWidth, count); //klineWidth/count;
    scale = klineHeight / (highPrice - lowPrice); //
    double ratio = (highPrice - lowPrice) / rowNum; //
    rowHeight = klineHeight / rowNum;
    colWeight = klineWidth / colNum;
    tPaint.setColor(GlobalColor.colorLabelName);
    tPaint.setTextAlign(Paint.Align.LEFT);

    /**
     * 
     */
    canvas.drawText(":" + quoteData.getJSONArray(isTrackNumber).getString(0), axisLabelWidth,
            axisLabelHeight - 5, tPaint);
    canvas.drawText(":" + quoteData.getJSONArray(isTrackNumber).getDouble(3), axisLabelWidth + width / 2,
            axisLabelHeight - 5, tPaint);
    paint.setColor(GlobalColor.clrGrayLine);
    /**
     * 
     */

    tPaint.setTextAlign(Paint.Align.RIGHT);
    for (int i = 0; i <= rowNum; i++) {
        if (i == 0 || i == rowNum) {
            canvas.drawLine(klineX, klineY + rowHeight * i, klineX + klineWidth, klineY + rowHeight * i, paint);
        } else {
            Graphics.drawDashline(canvas, klineX, klineY + rowHeight * i, klineX + klineWidth,
                    klineY + rowHeight * i, paint);
        }
        if (i == 0) {
            canvas.drawText(Utils.dataFormation(highPrice, 3), klineX,
                    klineY + rowHeight * i + axisLabelHeight / 2, tPaint);
        } else if (i == rowNum) {
            canvas.drawText(Utils.dataFormation(lowPrice, 3), klineX, klineY + rowHeight * i, tPaint);
        } else {
            double AxisLabelPrice = highPrice - ratio * i;
            canvas.drawText(Utils.dataFormation(AxisLabelPrice, 3), klineX,
                    klineY + rowHeight * i + axisLabelHeight / 2, tPaint);
        }
    }
    /**
     * 
     */
    for (int i = 0; i <= colNum; i++) {
        if (i == 0) {
            canvas.drawLine(klineX, klineY, klineX, klineY + klineHeight, paint);
        } else if (i == colNum) {
            canvas.drawLine(width - 1, klineY, width - 1, klineY + klineHeight, paint);
        } else {
            Graphics.drawDashline(canvas, klineX + colWeight * i, klineY, klineX + colWeight * i,
                    klineY + klineHeight, paint);
        }
    }

    /**
     * ?
     */
    double x1 = 0;
    double y1 = 0;
    double x2 = 0;
    double y2 = 0;
    double temp = 0;
    double tHeight = 0;
    dataPaint.setColor(GlobalColor.colorStockName);
    dataPaint.setStrokeWidth(3);
    for (int i = begin; i < (begin + count); i++) {
        temp = quoteData.getJSONArray(i).getDouble(3);
        if (i - begin == 0) {
            x1 = klineX + SPACE * (i - begin);
            x2 = klineX + SPACE * (i - begin + 1);
            tHeight = (temp - lowPrice) * scale; // tHeight = ( - ) *  
            y1 = axisLabelHeight + klineHeight - tHeight; //  - tHeight 
            y2 = axisLabelHeight + klineHeight - tHeight;
        } else {
            canvas.drawLine((int) x1, (int) y1, (int) x2, (int) y2, dataPaint);
            x1 = x2;
            x2 = klineX + SPACE * (i - begin + 1);
            tHeight = (temp - lowPrice) * scale;
            y1 = y2;
            y2 = axisLabelHeight + klineHeight - tHeight;
        }
    }
    /**
     * 
     */
    tPaint.setColor(GlobalColor.colorLabelName);
    tPaint.setTextAlign(Paint.Align.LEFT);
    canvas.drawText(quoteData.getJSONArray(begin).getString(0), axisLabelWidth,
            klineHeight + axisLabelHeight * 2 - 5, tPaint);
    canvas.drawText(quoteData.getJSONArray(begin + count - 1).getString(0),
            (float) (width - tPaint.measureText(quoteData.getJSONArray(begin + count - 1).getString(0))),
            klineHeight + axisLabelHeight * 2 - 5, tPaint);

    /**
     * 
     */
    if (isTrackStatus) {
        canvas.save();
        //??
        paint.setColor(GlobalColor.colorLine);
        canvas.drawLine(trackLineV, axisLabelHeight, trackLineV, klineHeight + axisLabelHeight, paint);
        canvas.restore();
    }
}

---

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