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.linkloving.dyh08.logic.UI.launch.view.wheelview.WheelView.java

/**
 * Draws rect for current value/*from   w  w  w.j a  v  a2s .  com*/
 *
 * @param canvas the canvas for drawing
 */
private void drawCenterRect(Canvas canvas) {
    int center = getHeight() / 2;
    int offset = (int) (getItemHeight() / 2 * 1.2);

    // Remarked by wulianghuan
    // Rect rect = new Rect(left, top, right, bottom)
    // centerDrawable.setBounds(bounds)
    // centerDrawable.setBounds(0, center - offset, getWidth(), center + offset);
    // centerDrawable.draw(canvas);

    Paint paint = new Paint();
    paint.setColor(Color.parseColor("#FFD0D0D0"));
    // 
    paint.setStrokeWidth((float) 1);
    // 
    canvas.drawLine(0, center - offset, getWidth(), center - offset, paint);
    // 
    canvas.drawLine(0, center + offset, getWidth(), center + offset, paint);
    // */
}

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From source file:com.wiipu.bimu.adapter.AreaSelect.WheelView.java

/**
 * Draws rect for current value/*  w  ww  . j  a v a 2  s . c  om*/
 * @param canvas the canvas for drawing
 */
private void drawCenterRect(Canvas canvas) {
    int center = getHeight() / 2;
    int offset = (int) (getItemHeight() / 2 * 1.2);
    /*/ Remarked by wulianghuan 2014-11-27  ???
    Rect rect = new Rect(left, top, right, bottom)
    centerDrawable.setBounds(bounds)
    centerDrawable.setBounds(0, center - offset, getWidth(), center + offset);
    centerDrawable.draw(canvas);
    //*/
    Paint paint = new Paint();
    paint.setColor(Color.parseColor("#999999"));
    // 
    paint.setStrokeWidth((float) 3);
    // 
    canvas.drawLine(0, center - offset, getWidth(), center - offset, paint);
    // 
    canvas.drawLine(0, center + offset, getWidth(), center + offset, paint);
    //*/
}

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From source file:de.vanita5.twittnuker.view.LinePageIndicator.java

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

    if (mViewPager == null)
        return;/*from w  w  w . java2  s  . c  om*/
    final int count = mViewPager.getAdapter().getCount();
    if (count == 0)
        return;

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = count * lineWidthAndGap - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();

    final float verticalOffset = paddingTop + (getHeight() - paddingTop - getPaddingBottom()) / 2.0f;
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += (getWidth() - paddingLeft - paddingRight) / 2.0f - indicatorWidth / 2.0f;
    }

    // Draw stroked circles
    for (int i = 0; i < count; i++) {
        final float dx1 = horizontalOffset + i * lineWidthAndGap;
        final float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                i == mCurrentPage ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:com.benefit.buy.library.viewpagerindicator.LinePageIndicator.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (mViewPager == null) {
        return;//from   w  ww.  j a  va  2 s  .  com
    }
    final int count = mViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }
    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }
    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = (count * lineWidthAndGap) - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();
    float verticalOffset = paddingTop + ((getHeight() - paddingTop - getPaddingBottom()) / 2.0f);
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += ((getWidth() - paddingLeft - paddingRight) / 2.0f) - (indicatorWidth / 2.0f);
    }
    // Draw stroked circles
    for (int i = 0; i < count; i++) {
        float dx1 = horizontalOffset + (i * lineWidthAndGap);
        float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                (i == mCurrentPage) ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:com.tsingning.view.TabPageIndicators.LinePageIndicator.java

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

    if (mViewPager == null) {
        return;//from   ww w.  j ava  2  s  . co  m
    }
    final int count = mViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = count * lineWidthAndGap - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();

    float verticalOffset = paddingTop + (getHeight() - paddingTop - getPaddingBottom()) / 2.0f;
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += (getWidth() - paddingLeft - paddingRight) / 2.0f - indicatorWidth / 2.0f;
    }

    //Draw stroked circles
    for (int i = 0; i < count; i++) {
        float dx1 = horizontalOffset + i * lineWidthAndGap;
        float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                i == mCurrentPage ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:com.along.altmcssd.pda.widget.viewpagerindicator.LinePageIndicator.java

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

    if (mViewPager == null) {
        return;/*from  w w w .  ja v a 2 s .  c  o m*/
    }
    final int count = mViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = (count * lineWidthAndGap) - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();

    float verticalOffset = paddingTop + ((getHeight() - paddingTop - getPaddingBottom()) / 2.0f);
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += ((getWidth() - paddingLeft - paddingRight) / 2.0f) - (indicatorWidth / 2.0f);
    }

    // Draw stroked circles
    for (int i = 0; i < count; i++) {
        float dx1 = horizontalOffset + (i * lineWidthAndGap);
        float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                (i == mCurrentPage) ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:android.hqs.view.pager.indicator.LinePageIndicator.java

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

    if (mViewPager == null) {
        return;/*ww  w  .  j a  va  2s.  c om*/
    }
    final int count = mViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = (count * lineWidthAndGap) - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();

    float verticalOffset = paddingTop + ((getHeight() - paddingTop - getPaddingBottom()) / 2.0f);
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += ((getWidth() - paddingLeft - paddingRight) / 2.0f) - (indicatorWidth / 2.0f);
    }

    //Draw stroked circles
    for (int i = 0; i < count; i++) {
        float dx1 = horizontalOffset + (i * lineWidthAndGap);
        float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                (i == mCurrentPage) ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:com.velocityviewpagerindicator.VelocityLinePageIndicator.java

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

    if (mVelocityViewPager == null) {
        return;/*from w w w . j a v  a  2s. co m*/
    }
    final int count = mVelocityViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = (count * lineWidthAndGap) - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();

    float verticalOffset = paddingTop + ((getHeight() - paddingTop - getPaddingBottom()) / 2.0f);
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += ((getWidth() - paddingLeft - paddingRight) / 2.0f) - (indicatorWidth / 2.0f);
    }

    //Draw stroked circles
    for (int i = 0; i < count; i++) {
        float dx1 = horizontalOffset + (i * lineWidthAndGap);
        float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                (i == mCurrentPage) ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:cn.chuangblog.simplebanner1.indicator.LinePageIndicator.java

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

    if (mViewPager == null) {
        return;/*from  w w  w  .  j  ava 2 s.com*/
    }
    final int count = InfiniteViewPager.FakePositionHelper.getAdapterSize(mViewPager);
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final float lineWidthAndGap = mLineWidth + mGapWidth;
    final float indicatorWidth = (count * lineWidthAndGap) - mGapWidth;
    final float paddingTop = getPaddingTop();
    final float paddingLeft = getPaddingLeft();
    final float paddingRight = getPaddingRight();

    float verticalOffset = paddingTop + ((getHeight() - paddingTop - getPaddingBottom()) / 2.0f);
    float horizontalOffset = paddingLeft;
    if (mCentered) {
        horizontalOffset += ((getWidth() - paddingLeft - paddingRight) / 2.0f) - (indicatorWidth / 2.0f);
    }

    //Draw stroked circles
    for (int i = 0; i < count; i++) {
        float dx1 = horizontalOffset + (i * lineWidthAndGap);
        float dx2 = dx1 + mLineWidth;
        canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset,
                (i == mCurrentPage) ? mPaintSelected : mPaintUnselected);
    }
}

---

From source file:com.dirkgassen.wator.ui.view.RollingGraphView.java

/**
 * Paints the data points of one series vertically.
 *
 * @param c          canvas to paint to// w ww .  j a va  2s .c o m
 * @param nameBounds bounds of the label
 * @param seriesNo   index of the series to paint
 * @param width      width of the view
 * @param height     height of the view
 * @param maxValue   calculated possible maximum data value
 */
private void paintSeriesVertical(Canvas c, Rect nameBounds, int seriesNo, int width,
        @SuppressWarnings("UnusedParameters") int height, float maxValue) {
    float paddingLeft = getPaddingLeft();
    float paddingTop = getPaddingTop();
    float paddingRight = getPaddingRight();
    float paddingBottom = getPaddingBottom();

    float y = nameBounds.height() + paddingTop;
    float x;
    if (currentValue == -1) {
        x = (width - paddingLeft - paddingRight) / (seriesNames.length + 1) * (seriesNo + 1) + paddingLeft;
    } else {
        if (dataValues == null) {
            Log.e("Wa-Tor", "NO DATA VALUES although currentValue is " + currentValue);
        } else if (dataValues[currentValue] == null) {
            Log.e("Wa-Tor", "NO SERIES DATA although currentValue is " + currentValue);
        }
        x = dataValues[currentValue][seriesNo] * (width - paddingLeft - paddingRight) / maxValue + paddingLeft;
    }
    c.drawText(seriesNames[seriesNo], x - nameBounds.width() / 2, y, seriesPaints[seriesNo]);

    float scale = seriesPaints[seriesNo].getStrokeWidth();
    y += 6f * scale;
    c.drawLine(x, y, x, y - 3f * scale, seriesPaints[seriesNo]);
    c.drawLine(x, y, x - 1.5f * scale, y - 1.5f * scale, seriesPaints[seriesNo]);
    c.drawLine(x, y, x + 1.5f * scale, y - 1.5f * scale, seriesPaints[seriesNo]);

    if (currentValue != -1) {
        int no = currentValue;
        do {
            if (dataValues[no] == null) {
                break;
            }
            float newX = dataValues[no][seriesNo] * (width - paddingLeft - paddingRight) / maxValue
                    + paddingLeft;
            float newY = y + 1;
            c.drawLine(x, y, newX, newY, seriesPaints[seriesNo]);
            x = newX;
            y = newY;
            no = no == 0 ? dataValues.length - 1 : no - 1;
        } while (no != oldestValue && y < height - paddingBottom);
    }
}

---

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