Example usage for android.graphics Canvas drawCircle

Introduction

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

Prototype

public void drawCircle(float cx, float cy, float radius, @NonNull Paint paint) 

Source Link

Document

Draw the specified circle using the specified paint.

Usage

From source file:org.uoyabause.android.PadButton.java

public void draw(Canvas canvas, Paint nomal_back, Paint active_back, Paint front) {
    super.draw(canvas, nomal_back, active_back, front);
    canvas.drawCircle(rect.centerX(), rect.centerY(), width * this.scale, back);
    //front.setTextSize(textsize);
    //front.setTextAlign(Paint.Align.CENTER);
    //canvas.drawText(text, rect.centerX() , rect.centerY() , front);
}

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From source file:com.amaze.carbonfilemanager.ui.views.Indicator.java

private void drawSelected(Canvas canvas) {
    canvas.drawCircle(selectedDotX, dotCenterY, dotRadius, selectedPaint);
}

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From source file:ru.tinkoff.acquiring.sdk.views.KeyView.java

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

    if (contentText != null) {
        final float x = (getWidth() / 2) - (textWidth / 2);
        final float y = (getHeight() / 2) - ((contentPaint.descent() + contentPaint.ascent()) / 2);
        canvas.drawText(contentText, x, y, contentPaint);
    }//from w  ww .ja va 2 s  . c o  m

    if (contentImage != null) {
        canvas.drawBitmap(contentImage, getWidth() / 2 - contentImage.getWidth() / 2,
                getHeight() / 2 - contentImage.getHeight() / 2, contentPaint);
    }

    if (drawingPressAnimation) {
        canvas.drawCircle(circleCenter.x, circleCenter.y, circleRadius, circlePaint);
    }
}

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From source file:com.morninz.ninepinview.widget.NinePINView.java

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

    // draw circles around center points and connection line
    int drawnCount = mDrawnPoints.size();
    for (int j = 0; j < drawnCount; j++) {
        Point p1 = mDrawnPoints.get(j);
        canvas.drawCircle(p1.x, p1.y, mCircleRadius, mCirclePaint);
        if (j + 1 < drawnCount) {
            Point p2 = mDrawnPoints.get(j + 1);
            canvas.drawCircle(p2.x, p2.y, mCircleRadius, mCirclePaint);
            canvas.drawLine(p1.x, p1.y, p2.x, p2.y, mLinePaint);
            if (mWillDrawWrongTriangle) {
                // compute the wrong triangle's direction of this point.
                float angle = 0.f;
                if (p2.y == p1.y) {// x-axis
                    angle = p2.x > p1.x ? 0.f : 180.f;
                } else if (p2.x == p1.x) { // y-axis
                    angle = p2.y > p1.y ? 90.f : -90.f;
                } else {// in quadrants
                    double tanA = ((double) p2.y - (double) p1.y) / ((double) p2.x - (double) p1.x);
                    // in 1 or 4 quadrant
                    angle = (float) (Math.atan(tanA) * 180 / Math.PI);
                    // in 2 or 3 quadrant
                    if (p2.x < p1.x) {
                        angle += 180.f;/*from  www  . ja v  a 2  s  .  c o  m*/
                    }
                }
                Log.d(TAG, "angle " + angle);
                canvas.save();
                canvas.rotate(angle, p1.x, p1.y);
                canvas.drawPath(mWrongPaths[p1.index], mWrongPaint);
                canvas.restore();
            }
        }
    }

    // draw extra connection line
    if (mLastDrawnPoint != null) {
        canvas.drawLine(mLastDrawnPoint.x, mLastDrawnPoint.y, mCurrX, mCurrY, mLinePaint);
    }

    // draw 9 center points
    for (int i = 0; i < POINT_COUNT; i++) {
        Point p = mCenterPoints[i];
        canvas.drawCircle(p.x, p.y, mPointSize, mPointPaint);
    }
}

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From source file:ir.hatamiarash.calendar.view.QiblaCompassView.java

public void drawDial(Canvas canvas) {
    // over here/*from w  w w  . j a v a  2  s  .  c o m*/
    circlePaint.reset();
    circlePaint.setColor(ContextCompat.getColor(getContext(), R.color.qibla_color));
    circlePaint.setStrokeWidth(1);
    circlePaint.setStyle(Paint.Style.STROKE); // Sadece Cember ciziyor.

    int textHeight = (int) textPaint.measureText("yY");
    markerPaint.reset();
    markerPaint.setColor(ContextCompat.getColor(getContext(), R.color.qibla_color));
    // Draw the background
    canvas.drawCircle(px, py, Radius, circlePaint);
    canvas.drawCircle(px, py, Radius - 20, circlePaint);
    // Rotate our perspective so that the "top" is
    // facing the current bearing.

    int textWidth = (int) textPaint.measureText("W");
    int cardinalX = px - textWidth / 2;
    int cardinalY = py - Radius + textHeight;

    // Draw the marker every 15 degrees and text every 45.
    for (int i = 0; i < 24; i++) {
        // Draw a marker.
        canvas.drawLine(px, py - Radius, px, py - Radius + 10, markerPaint);
        canvas.save();
        canvas.translate(0, textHeight);
        // Draw the cardinal points
        if (i % 6 == 0) {
            String dirString = "";
            switch (i) {
            case (0): {
                dirString = northString;
                break;
            }
            case (6):
                dirString = eastString;
                break;
            case (12):
                dirString = southString;
                break;
            case (18):
                dirString = westString;
                break;
            }
            canvas.drawText(dirString, cardinalX, cardinalY, textPaint);
        } else if (i % 3 == 0) {
            // Draw the text every alternate 45deg
            String angle = String.valueOf(i * 15);
            float angleTextWidth = textPaint.measureText(angle);
            int angleTextX = (int) (px - angleTextWidth / 2);
            int angleTextY = py - Radius + textHeight;
            canvas.drawText(angle, angleTextX, angleTextY, textPaint);
        }
        canvas.restore();
        canvas.rotate(15, px, py);
    }
}

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From source file:com.byagowi.persiancalendar.view.QiblaCompassView.java

public void drawDial(Canvas canvas) {
    // over here//w  ww.  j  a  v a2 s  .c  o m
    circlePaint.reset();
    circlePaint.setColor(ContextCompat.getColor(getContext(), R.color.qibla_color));
    circlePaint.setStrokeWidth(1);
    circlePaint.setStyle(Paint.Style.STROKE); // Sadece Cember ciziyor.

    int textHeight = (int) textPaint.measureText("yY");
    markerPaint.reset();
    markerPaint.setColor(ContextCompat.getColor(getContext(), R.color.qibla_color));
    // Draw the background
    canvas.drawCircle(px, py, Radius, circlePaint);
    canvas.drawCircle(px, py, Radius - 20, circlePaint);
    // Rotate our perspective so that the "top" is
    // facing the current bearing.

    int textWidth = (int) textPaint.measureText("W");
    int cardinalX = px - textWidth / 2;
    int cardinalY = py - Radius + textHeight;

    // Draw the marker every 15 degrees and text every 45.
    for (int i = 0; i < 24; i++) {
        // Draw a marker.
        canvas.drawLine(px, py - Radius, px, py - Radius + 10, markerPaint);
        canvas.save();
        canvas.translate(0, textHeight);
        // Draw the cardinal points
        if (i % 6 == 0) {
            String dirString = "";
            switch (i) {
            case (0): {
                dirString = northString;
                break;
            }
            case (6):
                dirString = eastString;
                break;
            case (12):
                dirString = southString;
                break;
            case (18):
                dirString = westString;
                break;
            }
            canvas.drawText(dirString, cardinalX, cardinalY, textPaint);
        } else if (i % 3 == 0) {
            // Draw the text every alternate 45deg
            String angle = String.valueOf(i * 15);
            float angleTextWidth = textPaint.measureText(angle);
            int angleTextX = (int) (px - angleTextWidth / 2);
            int angleTextY = py - Radius + textHeight;
            canvas.drawText(angle, angleTextX, angleTextY, textPaint);
        }
        canvas.restore();

        canvas.rotate(15, px, py);
    }

}

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From source file:com.crs4.roodin.moduletester.CustomView.java

/**
 * @param canvas/*from   w ww  .j  a  v  a 2s.c  o m*/
 */
private void drawRadar(Canvas canvas) {
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setColor(Color.RED);
    paint.setAlpha(100);

    float rotation = currentRotation; //gRotationZ_deg + initialMapRotation;

    for (int i = -35; i < 35; i = i + 2) {
        float arrowX1 = (float) (translateX - Math.sin(Math.toRadians(rotation + i)) * 45);
        float arrowY1 = (float) (translateY - Math.cos(Math.toRadians(rotation + i)) * 45);
        canvas.drawLine(translateX, translateY, arrowX1, arrowY1, paint);

    }

    paint.setAlpha(100);
    paint.setColor(Color.RED);
    canvas.drawCircle(translateX, translateY, 7, paint);

    paint.setColor(Color.YELLOW);
    canvas.drawCircle(translateX, translateY, 6, paint);

    paint.setColor(Color.RED);
    canvas.drawCircle(translateX, translateY, 1, paint);
}

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From source file:cn.refactor.ultraindicator.lib.UltraIndicatorView.java

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

    int position = 0;
    for (int rowChildCount = 3; rowChildCount > 0; rowChildCount--) {
        for (int i = 0; i < rowChildCount; i++) {
            mPaint.setColor(position == mCheckedPosition ? mCheckedColor : mUnCheckedColor);
            float cx = getPaddingLeft() + (i + 1) * mGap + ((i * 2 + 1) * mRadius); // 2n + 1 (n = 0,1,2)
            float cy = getPaddingTop() + ((3 - rowChildCount) + 1) * mGap
                    + (((3 - rowChildCount) * 2 + 1) * mRadius);
            canvas.drawCircle(cx, cy, position == mCheckedPosition ? mCheckedRunningRadius : mRadius, mPaint);
            position++;/*from w  w w .j  a va 2s.  c o  m*/
        }
    }
}

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From source file:com.android.andryyu.lifehelper.widget.RippleView.java

private void doRippleWork(Canvas canvas, int offect) {
    canvas.save();/*from  w w w  .j ava  2 s  .c o m*/
    if (rippleDuration <= timer * frameRate) {
        // There is problem on Android M where canvas.restore() seems to be called automatically
        // For now, don't call canvas.restore() manually on Android M (API 23)
        canvas.drawCircle(x, y, (radiusMax * (((float) timer * frameRate) / rippleDuration)), paint);

        if (onCompletionListener != null && rippleStatus != RIPPLE_ACTION_MOVE
                && rippleStatus != RIPPLE_LONG_PRESS) {
            onCompletionListener.onComplete(this);
        }
        if (rippleStatus != RIPPLE_LONG_PRESS) {
            animationRunning = false;
            rippleStatus = RIPPLE_NORMAL;
            timer = 0;
            durationEmpty = -1;
            timerEmpty = 0;
            if (Build.VERSION.SDK_INT != 23) {
                canvas.restore();
            }
        }
        invalidate();
        return;
    } else
        canvasHandler.postDelayed(runnable, frameRate);

    if (timer == 0)
        canvas.save();

    canvas.drawCircle(x, y, (radiusMax * (((float) timer * frameRate) / rippleDuration)), paint);

    paint.setColor(Color.parseColor("#ffff4444"));

    if (rippleType == 1 && originBitmap != null && (((float) timer * frameRate) / rippleDuration) > 0.4f) {
        if (durationEmpty == -1)
            durationEmpty = rippleDuration - timer * frameRate;

        timerEmpty++;
        final Bitmap tmpBitmap = getCircleBitmap(
                (int) ((radiusMax) * (((float) timerEmpty * frameRate) / (durationEmpty))));
        canvas.drawBitmap(tmpBitmap, 0, 0, paint);
        tmpBitmap.recycle();
    }

    paint.setColor(rippleColor);
    if (!isListMode) {
        if (rippleType == 1) {
            if ((((float) timer * frameRate) / rippleDuration) > 0.6f)
                paint.setAlpha((int) (rippleAlpha
                        - ((rippleAlpha) * (((float) timerEmpty * frameRate) / (durationEmpty)))));
            else
                paint.setAlpha(rippleAlpha);
        } else
            paint.setAlpha(
                    (int) (rippleAlpha - ((rippleAlpha) * (((float) timer * frameRate) / rippleDuration))));
    }
    timer += offect;
}

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From source file:com.google.android.apps.santatracker.doodles.shared.physics.Polygon.java

public void draw(Canvas canvas) {
    if (!(SwimmingFragment.editorMode)) {
        return;//from   www.j a va 2  s  . c  om
    }
    for (int i = 0; i < vertices.size(); i++) {
        Vector2D start = vertices.get(i);
        Vector2D end;
        if (i < vertices.size() - 1) {
            end = vertices.get(i + 1);
        } else {
            end = vertices.get(0);
        }
        Vector2D midpoint = Util.getMidpoint(start, end);
        Vector2D normal = Vector2D.get(end).subtract(start).toNormal();

        canvas.drawCircle(start.x, start.y, VERTEX_RADIUS, vertexPaint);
        canvas.drawLine(start.x, start.y, end.x, end.y, linePaint);
        canvas.drawCircle(midpoint.x, midpoint.y, VERTEX_RADIUS / 2, midpointPaint);
        canvas.drawLine(midpoint.x, midpoint.y, midpoint.x + normal.x * 20, midpoint.y + normal.y * 20,
                linePaint);

        midpoint.release();
        normal.release();
    }
}

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