Example usage for android.graphics Canvas drawText

Introduction

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

Prototype

public void drawText(@NonNull String text, float x, float y, @NonNull Paint paint) 

Source Link

Document

Draw the text, with origin at (x,y), using the specified paint.

Usage

From source file:com.android.datetimepicker.time.RadialTextsView.java

/**
 * Draw the 12 text values at the positions specified by the textGrid parameters.
 *//*from ww  w . jav  a 2 s .c  om*/
private void drawTexts(Canvas canvas, float textSize, Typeface typeface, String[] texts, float[] textGridWidths,
        float[] textGridHeights) {
    mPaint.setTextSize(textSize);
    mPaint.setTypeface(typeface);
    Paint[] textPaints = assignTextColors(texts);
    canvas.drawText(texts[0], textGridWidths[3], textGridHeights[0], textPaints[0]);
    canvas.drawText(texts[1], textGridWidths[4], textGridHeights[1], textPaints[1]);
    canvas.drawText(texts[2], textGridWidths[5], textGridHeights[2], textPaints[2]);
    canvas.drawText(texts[3], textGridWidths[6], textGridHeights[3], textPaints[3]);
    canvas.drawText(texts[4], textGridWidths[5], textGridHeights[4], textPaints[4]);
    canvas.drawText(texts[5], textGridWidths[4], textGridHeights[5], textPaints[5]);
    canvas.drawText(texts[6], textGridWidths[3], textGridHeights[6], textPaints[6]);
    canvas.drawText(texts[7], textGridWidths[2], textGridHeights[5], textPaints[7]);
    canvas.drawText(texts[8], textGridWidths[1], textGridHeights[4], textPaints[8]);
    canvas.drawText(texts[9], textGridWidths[0], textGridHeights[3], textPaints[9]);
    canvas.drawText(texts[10], textGridWidths[1], textGridHeights[2], textPaints[10]);
    canvas.drawText(texts[11], textGridWidths[2], textGridHeights[1], textPaints[11]);
}

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From source file:com.silentcircle.contacts.ContactPhotoManager.java

/**
 * If necessary, decodes bytes stored in the holder to Bitmap.  As long as the
 * bitmap is held either by {@link #mBitmapCache} or by a soft reference in
 * the holder, it will not be necessary to decode the bitmap.
 *///  www.j  a  va2s .c  o  m
private static void inflateBitmap(BitmapHolder holder, int requestedExtent) {
    final int sampleSize = BitmapUtil.findOptimalSampleSize(holder.originalSmallerExtent, requestedExtent);
    byte[] bytes = holder.bytes;
    if (bytes == null || bytes.length == 0) {
        return;
    }

    if (sampleSize == holder.decodedSampleSize) {
        // Check the soft reference.  If will be retained if the bitmap is also
        // in the LRU cache, so we don't need to check the LRU cache explicitly.
        if (holder.bitmapRef != null) {
            holder.bitmap = holder.bitmapRef.get();
            if (holder.bitmap != null) {
                return;
            }
        }
    }

    try {
        Bitmap bitmap = BitmapUtil.decodeBitmapFromBytes(bytes, sampleSize);

        // make bitmap mutable and draw size onto it
        if (DEBUG_SIZES) {
            Bitmap original = bitmap;
            bitmap = bitmap.copy(bitmap.getConfig(), true);
            original.recycle();
            Canvas canvas = new Canvas(bitmap);
            Paint paint = new Paint();
            paint.setTextSize(16);
            paint.setColor(Color.BLUE);
            paint.setStyle(Style.FILL);
            canvas.drawRect(0.0f, 0.0f, 50.0f, 20.0f, paint);
            paint.setColor(Color.WHITE);
            paint.setAntiAlias(true);
            canvas.drawText(bitmap.getWidth() + "/" + sampleSize, 0, 15, paint);
        }

        holder.decodedSampleSize = sampleSize;
        holder.bitmap = bitmap;
        holder.bitmapRef = new SoftReference<Bitmap>(bitmap);
        if (DEBUG) {
            int bCount = (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR1)
                    ? bitmap.getRowBytes() * bitmap.getHeight()
                    : bitmap.getByteCount();
            Log.d(TAG, "inflateBitmap " + btk(bytes.length) + " -> " + bitmap.getWidth() + "x"
                    + bitmap.getHeight() + ", " + btk(bCount));
        }
    } catch (OutOfMemoryError e) {
        // Do nothing - the photo will appear to be missing
    }
}

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From source file:it.jaschke.alexandria.BarcodeTrackerFactory.java

/**
 * Draws the barcode annotations for position, size, and raw value on the supplied canvas.
 *//*w  ww. j  av  a 2 s  . c om*/
@Override
public void draw(Canvas canvas) {
    Barcode barcode = mBarcode;
    if (barcode == null) {
        return;
    }

    // Draws the bounding box around the barcode.
    RectF rect = new RectF(barcode.getBoundingBox());
    rect.left = translateX(rect.left);
    //rect.top = translateY(rect.top);
    //rect.right = translateX(rect.right);
    rect.bottom = translateY(rect.bottom);
    //canvas.drawRect(rect, mRectPaint);

    // Draws a label at the bottom of the barcode indicate the barcode value that was detected.
    canvas.drawText(barcode.rawValue, rect.left, rect.bottom, mTextPaint);

    sendMessage(barcode.rawValue);
}

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From source file:com.mojtaba.materialdatetimepicker.time.RadialTextsView.java

/**
 * Draw the 12 text values at the positions specified by the textGrid parameters.
 *//*from w  w  w.j a  va  2 s. c  o  m*/
private void drawTexts(Canvas canvas, float textSize, Typeface typeface, String[] texts, float[] textGridWidths,
        float[] textGridHeights) {
    mPaint.setTextSize(textSize);
    mPaint.setTypeface(typeface);
    Paint[] textPaints = assignTextColors(LanguageUtils.getPersianNumbers(texts));
    canvas.drawText(texts[0], textGridWidths[3], textGridHeights[0], textPaints[0]);
    canvas.drawText(texts[1], textGridWidths[4], textGridHeights[1], textPaints[1]);
    canvas.drawText(texts[2], textGridWidths[5], textGridHeights[2], textPaints[2]);
    canvas.drawText(texts[3], textGridWidths[6], textGridHeights[3], textPaints[3]);
    canvas.drawText(texts[4], textGridWidths[5], textGridHeights[4], textPaints[4]);
    canvas.drawText(texts[5], textGridWidths[4], textGridHeights[5], textPaints[5]);
    canvas.drawText(texts[6], textGridWidths[3], textGridHeights[6], textPaints[6]);
    canvas.drawText(texts[7], textGridWidths[2], textGridHeights[5], textPaints[7]);
    canvas.drawText(texts[8], textGridWidths[1], textGridHeights[4], textPaints[8]);
    canvas.drawText(texts[9], textGridWidths[0], textGridHeights[3], textPaints[9]);
    canvas.drawText(texts[10], textGridWidths[1], textGridHeights[2], textPaints[10]);
    canvas.drawText(texts[11], textGridWidths[2], textGridHeights[1], textPaints[11]);
}

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From source file:cc.chenghong.vkagetorder.material.CircleProgressBar.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (mIfDrawText) {
        String text = String.format("%s%%", mProgress);
        int x = getWidth() / 2 - text.length() * mTextSize / 4;
        int y = getHeight() / 2 + mTextSize / 4;
        canvas.drawText(text, x, y, mTextPaint);
    }/*from  w ww.ja  va  2  s  .  c om*/
}

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From source file:com.github.kubatatami.RoundedView.java

private void drawText(Canvas canvas) {
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setTextSize(getResources().getDimension(R.dimen.item_circle_text_size));

    Rect areaRect = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
    RectF bounds = new RectF(areaRect);

    bounds.right = paint.measureText(text, 0, text.length());
    bounds.bottom = paint.descent() - paint.ascent();
    bounds.left += (areaRect.width() - bounds.right) / 2.0f;
    bounds.top += (areaRect.height() - bounds.bottom) / 2.0f;

    paint.setColor(Color.WHITE);/*  w w  w  . j a  v a  2s .c o m*/

    canvas.drawText(text, bounds.left, bounds.top - paint.ascent(), paint);
}

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From source file:pl.mg6.newmaps.demo.MarkersExampleActivity.java

private Bitmap prepareBitmap() {
    Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.arrow_left);
    bitmap = bitmap.copy(Config.ARGB_8888, true);
    Canvas canvas = new Canvas(bitmap);
    Paint paint = new Paint();
    paint.setAntiAlias(true);/*from www.  jav  a 2  s.  c o m*/
    paint.setColor(Color.WHITE);
    paint.setTextAlign(Align.CENTER);
    paint.setTextSize(getResources().getDimension(R.dimen.text_size));
    String text = "mg6";
    Rect bounds = new Rect();
    paint.getTextBounds(text, 0, text.length(), bounds);
    float x = bitmap.getWidth() / 2.0f;
    float y = (bitmap.getHeight() - bounds.height()) / 2.0f - bounds.top;
    canvas.drawText(text, x, y, paint);
    return bitmap;
}

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From source file:com.longle1.facedetection.MainActivity.java

@Override
protected void onDraw(Canvas canvas) {
    Paint paint = new Paint();
    paint.setColor(Color.GREEN);//from   w w  w.  j av a  2 s.  co  m
    paint.setTextSize(20);

    String s = "FacePreview - This side up.";
    float textWidth = paint.measureText(s);
    canvas.drawText(s, (getWidth() - textWidth) / 2, 20, paint);

    if (faces != null) {
        paint.setStrokeWidth(5);
        paint.setStyle(Paint.Style.STROKE);
        float scaleX = (float) getWidth() / grayImage.width();
        float scaleY = (float) getHeight() / grayImage.height();
        int total = faces.total();
        for (int i = 0; i < total; i++) {
            CvRect r = new CvRect(cvGetSeqElem(faces, i));
            int x = r.x(), y = r.y(), w = r.width(), h = r.height();
            canvas.drawRect(x * scaleX, y * scaleY, (x + w) * scaleX, (y + h) * scaleY, paint);
        }
    }
}

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From source file:com.hgdendi.contactslist.common.IndexBar.java

protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    int height = getHeight();
    int width = getWidth();
    if (height == 0) {
        return;/*from  w  w  w  . j a va 2s  . com*/
    }
    int singleHeight = height / mNavigators.size();

    for (int i = 0; i < mNavigators.size(); i++) {
        float xPos = width / 2 - mPaint.measureText(mNavigators.get(i)) / 2;
        float yPos = singleHeight * (i + 1);
        if (i == mFocusIndex) {
            canvas.drawText(mNavigators.get(i), xPos, yPos - mBaseLineHeight, mFocusPaint);
        } else {
            canvas.drawText(mNavigators.get(i), xPos, yPos - mBaseLineHeight, mPaint);
        }
    }
}

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From source file:com.google.android.gms.samples.vision.face.facetracker.FaceGraphic.java

/**
 * Draws the face annotations for position on the supplied canvas.
 *///  w  w  w.j  a v a2 s .  co  m
@Override
public void draw(Canvas canvas) {
    Face face = mFace;
    if (face == null) {
        return;
    }

    // Draws a circle at the position of the detected face, with the face's track id below.
    float x = translateX(face.getPosition().x + face.getWidth() / 2);
    float y = translateY(face.getPosition().y + face.getHeight() / 2);
    canvas.drawCircle(x, y, FACE_POSITION_RADIUS, mFacePositionPaint);
    canvas.drawText("id: " + mFaceId, x + ID_X_OFFSET, y + ID_Y_OFFSET, mIdPaint);
    canvas.drawText("happiness: " + String.format("%.2f", face.getIsSmilingProbability()), x - ID_X_OFFSET,
            y - ID_Y_OFFSET, mIdPaint);
    canvas.drawText("right eye: " + String.format("%.2f", face.getIsRightEyeOpenProbability()),
            x + ID_X_OFFSET * 2, y + ID_Y_OFFSET * 2, mIdPaint);
    canvas.drawText("left eye: " + String.format("%.2f", face.getIsLeftEyeOpenProbability()),
            x - ID_X_OFFSET * 2, y - ID_Y_OFFSET * 2, mIdPaint);

    try {
        Thread.sleep(1000);
    } catch (Exception e) {
        System.out.println("SLEEP EXCEPTION: " + e.getMessage());
    }

    String happiness = String.format("%.2f", face.getIsSmilingProbability());

    new RetrieveFeedTask().execute(happiness);

    // Draws a bounding box around the face.
    float xOffset = scaleX(face.getWidth() / 2.0f);
    float yOffset = scaleY(face.getHeight() / 2.0f);
    float left = x - xOffset;
    float top = y - yOffset;
    float right = x + xOffset;
    float bottom = y + yOffset;
    canvas.drawRect(left, top, right, bottom, mBoxPaint);
}

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