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.astuetz.PagerSlidingTriangleStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;//from w  w  w . j ava  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);

    //
    float x1 = (lineRight + lineLeft) / 2;
    float y1 = height - indicatorHeight;//
    float x2 = x1 - triangleWidth / 2;
    float y2 = height;//
    float x3 = x1 + triangleWidth / 2;
    float y3 = height;//

    Path path = new Path();
    path.moveTo(x1, y1);
    path.lineTo(x2, y2);
    path.lineTo(x3, y3);
    path.lineTo(x1, y1);

    //
    //        rectPaint.setStyle(Style.STROKE);
    //        rectPaint.setStrokeWidth(2);

    canvas.drawPath(path, 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.supermonkey.lifeassistant.view.pager.PagerSlidingTabStrip.java

/**
 * ?onDraw//w  w  w. j a v  a  2  s  .  c  om
 */
@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    // isEditMode()?
    if (isInEditMode() || tabCount == 0) {
        return;
    }
    // 
    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
    // currentPosition0
    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:de.blinkt.openvpn.views.PagerSlidingTabStripExtends.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/*from ww w . j ava  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);
    }
    // indicator

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

    /*
    x = (lineRight-lineLeft)/2+lineLeft
    y = height - indicatorHeight
     */
    /*
     int triangleWidth = 18;
    float x1 = (lineRight - lineLeft) / 2 + lineLeft;
    float y1 = height - indicatorHeight;
    float x2 = x1 - triangleWidth / 2;
    float y2 = height;
    float x3 = x1 + triangleWidth / 2;
    float y3 = height;
            
    Path path = new Path();
    path.moveTo(x1, y1);
    path.lineTo(x2, y2);
    path.lineTo(x3, y3);
    path.lineTo(x1, y1);
            
    canvas.drawPath(path, 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.astuetz.PagerSlidingTabStripCopy.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/*from www .  ja v a 2  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);
    /*----------:begin----------*/
    //        int bian = 20;
    //        float x1 = lineLeft + (lineRight - lineLeft) / 2;
    //        float y1 = height - indicatorHeight;
    //        float x2 = x1 + bian;
    //        float y2 = height;
    //        float x3 = x1 - bian;
    //        float y3 = height;
    //        Path path = new Path();
    //        path.moveTo(x1, y1);
    //        path.lineTo(x2, y2);
    //        path.lineTo(x3, y3);
    //        path.lineTo(x1, y1);
    //        canvas.drawPath(path, rectPaint);
    /*----------end----------*/

    // 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.skumar.flexibleciruclarseekbar.CircularSeekBar.java

/**
 * Method to draw the needle scale//from  w w w  .  j  a v a2  s.co m
 *
 * @param canvas drawable element
 */
private void drawNeedleMarkings(Canvas canvas) {
    float cx = canvas.getWidth() / 2;
    float cy = canvas.getHeight() / 2;
    float scaleMarkSize = getResources().getDisplayMetrics().density * mNeedleDP;
    int radius = mArcRadius + mNeedleDistance;

    for (float progress = mProgressIncrement; progress < mMax; progress += mProgressIncrement) {
        float progressSweep = progress / mMax * mSweepAngle;
        int thumbAngle = (int) (mStartAngle + progressSweep + mRotation);
        float startX = (float) (cx + radius * Math.sin(Math.toRadians(thumbAngle)));
        float startY = (float) (cy - radius * Math.cos(Math.toRadians(thumbAngle)));

        float stopX = (float) (cx + (radius + scaleMarkSize) * Math.sin(Math.toRadians(thumbAngle)));
        float stopY = (float) (cy - (radius + scaleMarkSize) * Math.cos(Math.toRadians(thumbAngle)));

        if (progress == mMax / 2 && isIncreaseCenter) {
            stopX = (float) (cx
                    + (radius + scaleMarkSize + mIncreaseCenterNeedle) * Math.sin(Math.toRadians(thumbAngle)));
            stopY = (float) (cy
                    - (radius + scaleMarkSize + mIncreaseCenterNeedle) * Math.cos(Math.toRadians(thumbAngle)));
        }
        if (progress >= mMinimumNeedleScale && progress <= mMaximumNeedleScale && mDrawNeedleScaleUp) {
            stopX = (float) (cx
                    + (radius + scaleMarkSize + mIncreaseCenterNeedle) * Math.sin(Math.toRadians(thumbAngle)));
            stopY = (float) (cy
                    - (radius + scaleMarkSize + mIncreaseCenterNeedle) * Math.cos(Math.toRadians(thumbAngle)));
        }
        canvas.drawLine(startX, startY, stopX, stopY, mNeedleScalePaint);
    }
}

---

From source file:com.astuetz.PagerSlidingTrilateralStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;//from w  ww .  j a va2 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);
    }
    /*modify by HJ begin ??*/
    //
    //canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);
    // ->
    float x1 = (lineLeft + lineRight) / 2;
    float y1 = height - indicatorHeight;

    float x2 = x1 - triangleWidth / 2;
    float y2 = height;

    float x3 = x1 + triangleWidth / 2;
    float y3 = height;

    Path path = new Path();
    path.moveTo(x1, y1);//
    path.lineTo(x2, y2);//2
    path.lineTo(x3, y3);//3
    path.lineTo(x1, y1);//1

    canvas.drawPath(path, rectPaint);

    /*modify by HJ end ??*/
    // 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.dashihui.afford.ui.widget.WdtPagerTabServerTime.java

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

    if (isInEditMode() || tabCount == 0) {
        return;// ww  w . j  ava2  s  . c  o m
    }

    final int height = getHeight();

    // draw indicator line
    //tab 
    rectPaint.setColor(getResources().getColor(R.color.btfontBlue));

    // 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) {
        //?tab?
        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();
        if (lineLeft != nextTabLeft && yesBoolean < 2) {
            //??tab
            //?
            //            Log.i(TAG, "??===TTT==nextTabLeft=====>"+nextTabLeft);
            //            Log.i(TAG, "??===TTT==lineLeft=====>"+lineLeft);
            yesBoolean++;
        } else {
            lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
            lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
            yesBoolean++;
        }

    }
    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.cmax.bodysheild.widget.PagerSlidingTabStripExtends.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/* w  w w  .  j  a  va  2 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, startSingleFile 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);
    }
    // indicator

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

    /*
    x = (lineRight-lineLeft)/2+lineLeft
    y = height - indicatorHeight
     */
    /*
     int triangleWidth = 18;
    float x1 = (lineRight - lineLeft) / 2 + lineLeft;
    float y1 = height - indicatorHeight;
    float x2 = x1 - triangleWidth / 2;
    float y2 = height;
    float x3 = x1 + triangleWidth / 2;
    float y3 = height;
            
    Path path = new Path();
    path.moveTo(x1, y1);
    path.lineTo(x2, y2);
    path.lineTo(x3, y3);
    path.lineTo(x1, y1);
            
    canvas.drawPath(path, 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.sflib.CustomView.baseview.RoundRecPagerSlidingTabStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;//from  ww w.  j a  v a2s .  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, doRefresh 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);
    }
    float indicator_top = getPaddingTop();
    float indicator_botom = currentTab.getHeight() + indicator_top;
    float indicator_left = lineLeft + getPaddingLeft();
    //        L.info(this,"indicator_left: "+indicator_left+" lineLeft: "+lineLeft+" padding: "+currentTab.getPaddingLeft()+" currentPositionOffset: "+currentPositionOffset);
    RectF indicatorRec = new RectF(indicator_left - indicatorLeftRightPadding + tabPadding,
            indicator_top - indicatorTopBottomPadding, lineRight + indicatorLeftRightPadding - tabPadding,
            indicator_botom + indicatorTopBottomPadding);
    canvas.drawRoundRect(indicatorRec, indicatorRectCorner, indicatorRectCorner, rectPaint);

    // draw underline
    rectPaint.setColor(underlineColor);
    RectF rect = new RectF(0, height - underlineHeight, tabsContainer.getWidth(), height);
    canvas.drawRect(rect, 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.zhongsou.souyue.ui.PagerSlidingTabStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/*from  w  w  w .j  av  a 2  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();

    for (int i = 0; i < tabCount; i++) {
        View v = tabsContainer.getChildAt(i);
        v.setBackgroundResource(tabBackgroundResId);
        if (i == currentPosition) {
            if (v instanceof TextView) {
                TextView tab = (TextView) v;
                tab.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
                tab.setTextColor(textColor);
            }
        } else {
            if (v instanceof TextView) {
                TextView tab = (TextView) v;
                tab.setTextSize(TypedValue.COMPLEX_UNIT_PX, tabTextSize);
                tab.setTextColor(tabTextColor);
            }
        }
    }

    // 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);
    }
}

---

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