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.view.astuetz.PagerSlidingTabStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/* www. ja v  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);
    }

    // draw indicator line
    if (showUnderline == 0)
        canvas.drawRect(lineLeft, 0, lineRight, indicatorHeight, rectPaint);
    else
        canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);

    // draw underline

    rectPaint.setColor(underlineColor);
    if (showUnderline == 0)
        canvas.drawRect(0, 0, tabsContainer.getWidth(), underlineHeight, rectPaint);
    else
        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:midian.baselib.widget.PagerSlidingTabStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;//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);
    }

    // float offset = (lineRight - lineLeft) / 8;
    //
    // lineLeft = lineLeft + offset;
    //
    // lineRight = lineRight - offset;

    if (isUpLine) {
        canvas.drawRect(lineLeft, 0, lineRight, indicatorHeight, rectPaint);

    } else {

        canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);
    }
    // draw underline

    rectPaint.setColor(tabSelectColor);

    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.minji.cufcs.widget.PagerSlidingTab.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/*from  w w w .  j  a v  a 2s. 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);
    //?
    //      canvas.drawRect(lineLeft, 0, lineRight, indicatorHeight, rectPaint);
    //
    //      canvas.drawRect(lineLeft, height/2-indicatorHeight/2, lineRight, height/2+indicatorHeight/2, rectPaint);
    //      canvas.drawRect(lineLeft, 0, 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.zxly.o2o.viewpagerindicator.PagerSlidingTabStrip.java

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

    if (isInEditMode() || tabCount == 0 || !isNeedToDoDraw) {
        return;//  www . 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);
    }

    canvas.drawRect(lineLeft
            - (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, AppController.displayMetrics),
            height - indicatorHeight, lineRight + (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
                    2, AppController.displayMetrics),
            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.xinwei.smallvideo.widget.PagerSlidingTabStrip.java

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

    if (isInEditMode() || tabCount == 0) {
        return;/*from ww  w.ja  va  2 s .c  o  m*/
    }

    final int height = getHeight();

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

    // ??TAB
    View currentTab = tabsContainer.getChildAt(currentPosition);
    // ??TAB???
    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, 0, lineRight, indicatorHeight, rectPaint);

    // 
    // 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);
        boolean isSelected = (i == currentPosition);
        tab.setSelected(isSelected);

        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

---

From source file:net.ibaixin.chat.view.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.  c  o m
    }

    final int height = getHeight();

    int defaultColor = rectPaint.getColor();

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

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

    // default: line below current tab
    View currentTab = mTabLayout.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 = mTabLayout.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);

    rectPaint.setColor(defaultColor);

    // draw divider

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

---

From source file:net.fengg.lib.tabsliding.TabSlidingView.java

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

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

    final int height = getHeight();

    // draw underline
    rectPaint.setColor(underlineColor);
    if (isIndicatorBelow()) {
        canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);
    } else {
        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);
    }

    if (isIndicatorBelow()) {
        canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);
    } else {
        canvas.drawRect(lineLeft, 0, lineRight, indicatorHeight, 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 marker for the domain axis.//from   w w  w.  ja va 2  s.  com
 * 
 * @param g2
 *            the graphics device (not <code>null</code>).
 * @param plot
 *            the plot (not <code>null</code>).
 * @param axis
 *            the range axis (not <code>null</code>).
 * @param marker
 *            the marker to be drawn (not <code>null</code>).
 * @param dataArea
 *            the area inside the axes (not <code>null</code>).
 * 
 * @see #drawRangeMarker(Graphics2D, CategoryPlot, ValueAxis, Marker,
 *      Rectangle2D)
 */
public void drawDomainMarker(Canvas g2, CategoryPlot plot, CategoryAxis axis, CategoryMarker marker,
        Rectangle2D dataArea) {

    Comparable category = marker.getKey();
    CategoryDataset dataset = plot.getDataset(plot.getIndexOf(this));
    int columnIndex = dataset.getColumnIndex(category);
    if (columnIndex < 0) {
        return;
    }

    Paint paint = marker.getPaint();
    paint.setAlpha(marker.getAlpha());

    PlotOrientation orientation = plot.getOrientation();
    Rectangle2D bounds = null;
    if (marker.getDrawAsLine()) {
        double v = axis.getCategoryMiddle(columnIndex, dataset.getColumnCount(), dataArea,
                plot.getDomainAxisEdge());
        Line2D line = null;
        if (orientation == PlotOrientation.HORIZONTAL) {
            line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v);
        } else if (orientation == PlotOrientation.VERTICAL) {
            line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY());
        }

        paint.setStrokeWidth(marker.getStroke());
        g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(),
                paint);
        bounds = line.getBounds2D();
    } else {
        double v0 = axis.getCategoryStart(columnIndex, dataset.getColumnCount(), dataArea,
                plot.getDomainAxisEdge());
        double v1 = axis.getCategoryEnd(columnIndex, dataset.getColumnCount(), dataArea,
                plot.getDomainAxisEdge());
        Rectangle2D area = null;
        if (orientation == PlotOrientation.HORIZONTAL) {
            area = new Rectangle2D.Double(dataArea.getMinX(), v0, dataArea.getWidth(), (v1 - v0));
        } else if (orientation == PlotOrientation.VERTICAL) {
            area = new Rectangle2D.Double(v0, dataArea.getMinY(), (v1 - v0), dataArea.getHeight());
        }
        Paint p = marker.getPaint();
        p.setStyle(Paint.Style.FILL);
        g2.drawRect((float) area.getMinX(), (float) area.getMinY(), (float) area.getMaxX(),
                (float) area.getMaxY(), p);
        bounds = area;
    }

    String label = marker.getLabel();
    RectangleAnchor anchor = marker.getLabelAnchor();
    if (label != null) {
        Font labelFont = marker.getLabelFont();
        // g2.setFont(labelFont);
        // g2.setPaint(marker.getLabelPaint());
        Point2D coordinates = calculateDomainMarkerTextAnchorPoint(g2, orientation, dataArea, bounds,
                marker.getLabelOffset(), marker.getLabelOffsetType(), anchor);
        TextUtilities.drawAlignedString(label, g2, (float) coordinates.getX(), (float) coordinates.getY(),
                marker.getLabelTextAnchor(), marker.getLabelPaint());
    }
    // g2.setComposite(savedComposite);
}

---

From source file:pageslidingtabstrip.ConsumingPagerSlidingTabStrip.java

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

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

    final int height = getHeight();

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);

    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();
    int tabwidth = 0;
    if (isShowLine) {
        tabwidth = currentTab.getPaddingLeft();
    }

    // if there is an offset, start interpolating left and right coordinates
    // between current and next tab
    if (isShowUnderLine) {
        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 + tabwidth, height - indicatorHeight, lineRight - tabwidth, height, rectPaint);

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

    // draw divider
    dividerPaint.setColor(dividerColor);
    if (isShowLine) {
        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:so.contacts.hub.basefunction.widget.viewpagerindicator.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 deltX = 0;
    if (currentTab instanceof TextView) {
        TextView textView = (TextView) currentTab;
        float measureText = textView.getPaint().measureText(textView.getText(), 0, textView.getText().length());
        deltX = (float) (((currentTab.getRight() - currentTab.getLeft()) - measureText) / 3.0);
    }
    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 + deltX, height - indicatorHeight, lineRight - deltX, 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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