Example usage for android.graphics Paint getTextBounds

Introduction

In this page you can find the example usage for android.graphics Paint getTextBounds.

Prototype

public void getTextBounds(char[] text, int index, int count, Rect bounds) 

Source Link

Document

Return in bounds (allocated by the caller) the smallest rectangle that encloses all of the characters, with an implied origin at (0,0).

Usage

From source file:com.ecuamobi.deckwallet.util.Renderer.java

private static int getTextWidth(String s, Paint paint) {
    Rect bounds = new Rect();
    paint.getTextBounds(s, 0, s.length(), bounds);
    return bounds.right - bounds.left;
}

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From source file:Main.java

private static Bitmap decorate(Bitmap bitmap, char label, int color, boolean glossy) {

    Canvas canvas = new Canvas(bitmap);

    canvas.drawColor(color);//w  w  w  .  j  a  va  2s.c  om

    String labelString = String.valueOf(label);
    Paint textPaint = getTextPaint(bitmap.getHeight() * 0.75f);
    float cx = bitmap.getWidth() / 2;
    float cy = bitmap.getHeight() / 2;
    float oy = 0;

    synchronized (junkRectangle) {
        textPaint.getTextBounds(labelString, 0, 1, junkRectangle);
        oy = (junkRectangle.top + junkRectangle.bottom) / 2;
    }

    canvas.drawText(labelString, cx, cy - oy, textPaint);

    if (glossy) {
        canvas.drawPath(gloss(bitmap.getWidth()), getGlossPaint());
    }

    return bitmap;

}

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From source file:Main.java

public static Bitmap drawTextToBitmap(Context context, int resId, String text) {

    Resources resources = context.getResources();
    float scale = resources.getDisplayMetrics().density;
    Bitmap bitmap = BitmapFactory.decodeResource(resources, resId);

    Bitmap.Config bitmapConfig = bitmap.getConfig();
    if (bitmapConfig == null)
        bitmapConfig = Bitmap.Config.ARGB_8888;
    bitmap = bitmap.copy(bitmapConfig, true);

    Canvas canvas = new Canvas(bitmap);
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setColor(context.getResources().getColor(android.R.color.white));
    paint.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));
    paint.setTextSize((int) (12 * scale));

    Rect bounds = new Rect();
    paint.getTextBounds(text, 0, text.length(), bounds);
    int x = (bitmap.getWidth() - bounds.width()) / 4;
    int y = (bitmap.getHeight() + bounds.height()) / 5;

    canvas.drawText(text, x * scale, y * scale, paint);

    return bitmap;
}

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From source file:Main.java

/**
 * Create round, coloured bitmap with text embedded.
 * @param circleColor The color to use.//from   w  ww . j  a v a 2  s  . co  m
 * @param diameterDP The diameter of the circle.
 * @param text The text to embed.
 * @return Bitmap showing a text.
 */
public static Bitmap generateCircleBitmap(int circleColor, float diameterDP, String text) {
    /**
     *
     * http://stackoverflow.com/questions/31168636/rounded-quickcontactbadge-with-text
     */
    final int textColor = 0xffffffff;

    DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
    float diameterPixels = diameterDP * (metrics.densityDpi / 160f);
    float radiusPixels = diameterPixels / 2;

    // Create the bitmap
    Bitmap output = Bitmap.createBitmap((int) diameterPixels, (int) diameterPixels, Bitmap.Config.ARGB_8888);

    // Create the canvas to draw on
    Canvas canvas = new Canvas(output);
    canvas.drawARGB(0, 0, 0, 0);

    // Draw the circle
    final Paint paintC = new Paint();
    paintC.setAntiAlias(true);
    paintC.setColor(circleColor);
    canvas.drawCircle(radiusPixels, radiusPixels, radiusPixels, paintC);

    // Draw the text
    if (text != null && text.length() > 0) {
        final Paint paintT = new Paint();
        paintT.setColor(textColor);
        paintT.setAntiAlias(true);
        paintT.setTextSize(radiusPixels * 2);
        paintT.setTypeface(Typeface.SANS_SERIF);
        final Rect textBounds = new Rect();
        paintT.getTextBounds(text, 0, text.length(), textBounds);
        canvas.drawText(text, radiusPixels - textBounds.exactCenterX(),
                radiusPixels - textBounds.exactCenterY(), paintT);
    }

    return output;
}

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From source file:Main.java

/**
 * The most useful answer about text drawing ever. http://stackoverflow.com/a/32081250
 *//*from  w  ww.  j a v a 2s.  c  o m*/
@Nullable
public static Bitmap createTypefaceBitmap(final Context context, @NonNull final String text, final int color,
        final float textSizePx) {
    final Typeface robotoMedium = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Medium.ttf");

    final Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setSubpixelText(true);
    paint.setTypeface(robotoMedium);
    paint.setStyle(Paint.Style.FILL);
    paint.setColor(color);
    paint.setTextSize(textSizePx);

    final Rect bounds = new Rect();
    paint.getTextBounds(text, 0, text.length(), bounds);

    Bitmap bitmap = null;
    if (!bounds.isEmpty()) {
        final int width = bounds.width();
        final int height = bounds.height();

        bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_4444);

        final float x = bounds.left;
        final float y = height - bounds.bottom;

        final Canvas canvas = new Canvas(bitmap);
        canvas.drawText(text, x, y, paint);
    }

    return bitmap;
}

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From source file:Main.java

public static Bitmap drawTextCenterToBitmap(Bitmap bitmap, String text, int textSize, int textColor) {
    android.graphics.Bitmap.Config bitmapConfig = bitmap.getConfig();
    // set default bitmap config if none
    if (bitmapConfig == null) {
        bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
    }/*from  w  ww . java2  s  .co  m*/
    // resource bitmaps are imutable,
    // so we need to convert it to mutable one
    bitmap = bitmap.copy(bitmapConfig, true);

    Canvas canvas = new Canvas(bitmap);
    // new antialised Paint
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    // text color - #3D3D3D
    paint.setColor(textColor);
    // text size in pixels
    paint.setTextSize(textSize);
    // text shadow
    paint.setShadowLayer(1f, 0f, 1f, Color.WHITE);

    // draw text to the Canvas center
    Rect bounds = new Rect();
    paint.getTextBounds(text, 0, text.length(), bounds);
    //int x = (bitmap.getWidth() - bounds.width()) / 2;
    //int y = (bitmap.getHeight() + bounds.height()) / 2;
    //draw  text  to the bottom
    int x = (bitmap.getWidth() - bounds.width()) / 10 * 5;
    int y = (bitmap.getHeight() + bounds.height()) / 10 * 5;
    canvas.drawText(text, x, y, paint);

    return bitmap;
}

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From source file:Main.java

public static Bitmap drawTextToBitmap(Context gContext, int gResId, String gText) {
    Resources resources = gContext.getResources();
    float scale = resources.getDisplayMetrics().density;
    Bitmap bitmap = BitmapFactory.decodeResource(resources, gResId);

    Bitmap.Config bitmapConfig = bitmap.getConfig();
    // set default bitmap config if none
    if (bitmapConfig == null) {
        bitmapConfig = Bitmap.Config.ARGB_8888;
    }//from  w w w  . ja v a2s.  c  o m
    // resource bitmaps are imutable,
    // so we need to convert it to mutable one
    bitmap = bitmap.copy(bitmapConfig, true);

    Canvas canvas = new Canvas(bitmap);
    // new antialised Paint
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    // text color - #808080
    paint.setColor(Color.rgb(127, 127, 127));
    // text size in pixels
    paint.setTextSize((int) (14 * scale * 5));
    // text shadow
    paint.setShadowLayer(1f, 0f, 1f, Color.WHITE);

    // draw text to the Canvas center
    Rect bounds = new Rect();
    paint.getTextBounds(gText, 0, gText.length(), bounds);
    //      int x = (bitmap.getWidth() - bounds.width()) / 2;
    //      int y = (bitmap.getHeight() + bounds.height()) / 2;
    //draw  text  to the bottom
    int x = (bitmap.getWidth() - bounds.width()) / 10 * 9;
    int y = (bitmap.getHeight() + bounds.height()) / 10 * 9;
    canvas.drawText(gText, x, y, paint);

    return bitmap;
}

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From source file:com.metinkale.prayerapp.vakit.WidgetService.java

private static Bitmap getIconFromMinutes(long left) {
    String text = left + "";
    Resources r = App.getContext().getResources();
    int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 32, r.getDisplayMetrics());
    Bitmap b = Bitmap.createBitmap(px, px, Bitmap.Config.ARGB_4444);
    Canvas c = new Canvas(b);
    Paint paint = new Paint();
    final float testTextSize = 48f;
    paint.setTextSize(testTextSize);/*w w  w  . j av  a  2s . co  m*/
    Rect bounds = new Rect();
    paint.getTextBounds(text.length() == 1 ? "0" + text : text, 0, text.length() == 1 ? 2 : text.length(),
            bounds);
    float desiredTextSize = testTextSize * (px * 0.9f) / bounds.width();
    paint.setTextSize(desiredTextSize);
    paint.setColor(0xFFFFFFFF);
    paint.setTextAlign(Paint.Align.CENTER);
    int yPos = (int) ((c.getHeight() / 2) - ((paint.descent() + paint.ascent()) / 2));
    c.drawText(text, px / 2, yPos, paint);
    c.drawText(text, px / 2, yPos, paint);
    return b;
}

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From source file:Main.java

public static byte[] makeFontBitmap(String font, String code, int size, float[] arrayOfPos) {
    Canvas c = new Canvas();
    Paint p = new Paint();
    float density = context.getResources().getDisplayMetrics().density;
    //        Log.v(TAG, String.format("makeFontBitmap called(Java): font=%s code=%s density=%f", font, code, density));
    p.setTextSize((float) size * density);
    p.setAntiAlias(true);//from www  .  j  a  va2s.  c o  m

    Rect textBounds = new Rect();
    p.getTextBounds(code, 0, code.length(), textBounds);
    //        Log.v(TAG, String.format("makeFontBitmap textBounds: %d,%d,%d,%d", textBounds.left, textBounds.top, textBounds.right, textBounds.bottom));

    Rect textBoundsAxA = new Rect();
    String axa = String.format("A%sA", code);
    p.getTextBounds(axa, 0, axa.length(), textBoundsAxA);
    Rect textBoundsAA = new Rect();
    String aa = "AA";
    p.getTextBounds(aa, 0, aa.length(), textBoundsAA);

    // cache.distDelta = Vec2(0, 0);
    arrayOfPos[0] = textBounds.left;
    arrayOfPos[1] = textBounds.top;

    // cache.srcWidth = Vec2(16, 16);
    arrayOfPos[2] = textBounds.width();
    arrayOfPos[3] = textBounds.height();

    // cache.step = 16;
    //      arrayOfPos[4] = textBounds.width() + 1;
    arrayOfPos[4] = textBoundsAxA.width() - textBoundsAA.width();

    if (textBounds.width() == 0 || textBounds.height() == 0) {
        Log.v(TAG, "makeFontBitmap: empty");
        return null;
    }

    Bitmap b = Bitmap.createBitmap(textBounds.width(), textBounds.height(), Bitmap.Config.ARGB_8888);
    c.setBitmap(b);

    Rect r = new Rect(0, 0, textBounds.width(), textBounds.height());
    //      p.setColor(Color.RED);
    p.setARGB(0, 0, 0, 0);
    c.drawRect(r, p);
    p.setARGB(255, 255, 255, 255);

    //        Log.v(TAG, "makeFontBitmap: drawText");
    c.drawText(code, -textBounds.left, -textBounds.top, p);
    //        Log.v(TAG, String.format("makeFontBitmap: w=%.2f h=%.2f", arrayOfPos[2], arrayOfPos[3]));

    ByteBuffer buf = ByteBuffer.allocate(textBounds.width() * textBounds.height() * 4);
    //        Log.v(TAG, String.format("makeFontBitmap: b.getRowBytes() %d", b.getRowBytes()));
    buf.position(0);
    b.copyPixelsToBuffer(buf);
    //        Log.v(TAG, String.format("makeFontBitmap results: capacity=%d", buf.capacity()));

    return buf.array();
}

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From source file:Main.java

public static byte[] makeFontBitmap(String font, String code, int size, float[] arrayOfPos) {
    Log.v(TAG, String.format("makeFontBitmap called(Java): font=%s code=%s", font, code));
    Canvas c = new Canvas();
    Paint p = new Paint();
    //        Log.v(TAG, "get density");
    float density = context.getResources().getDisplayMetrics().density;
    Log.v(TAG, String.format("makeFontBitmap density: %f", density));
    p.setTextSize((float) size * density);
    p.setAntiAlias(true);// ww w.j  a  v  a  2  s .  c  o  m

    Rect textBounds = new Rect();
    p.getTextBounds(code, 0, code.length(), textBounds);
    Log.v(TAG, String.format("makeFontBitmap textBounds: %d,%d,%d,%d", textBounds.left, textBounds.top,
            textBounds.right, textBounds.bottom));

    Rect textBoundsAxA = new Rect();
    String axa = String.format("A%sA", code);
    p.getTextBounds(axa, 0, axa.length(), textBoundsAxA);
    Rect textBoundsAA = new Rect();
    String aa = "AA";
    p.getTextBounds(aa, 0, aa.length(), textBoundsAA);

    // cache.distDelta = Vec2(0, 0);
    arrayOfPos[0] = textBounds.left;
    arrayOfPos[1] = textBounds.top;

    // cache.srcWidth = Vec2(16, 16);
    arrayOfPos[2] = textBounds.width();
    arrayOfPos[3] = textBounds.height();

    // cache.step = 16;
    //      arrayOfPos[4] = textBounds.width() + 1;
    arrayOfPos[4] = textBoundsAxA.width() - textBoundsAA.width();

    if (textBounds.width() == 0 || textBounds.height() == 0) {
        Log.v(TAG, "makeFontBitmap: empty");
        return null;
    }

    Bitmap b = Bitmap.createBitmap(textBounds.width(), textBounds.height(), Bitmap.Config.ARGB_8888);
    c.setBitmap(b);

    Rect r = new Rect(0, 0, textBounds.width(), textBounds.height());
    //      p.setColor(Color.RED);
    p.setARGB(0, 0, 0, 0);
    c.drawRect(r, p);
    p.setARGB(255, 255, 255, 255);

    //        Log.v(TAG, "makeFontBitmap: drawText");
    c.drawText(code, -textBounds.left, -textBounds.top, p);
    Log.v(TAG, String.format("makeFontBitmap: w=%.2f h=%.2f", arrayOfPos[2], arrayOfPos[3]));

    ByteBuffer buf = ByteBuffer.allocate(textBounds.width() * textBounds.height() * 4);
    //      ByteBuffer buf = ByteBuffer.allocate(b.getRowBytes());
    Log.v(TAG, String.format("makeFontBitmap: b.getRowBytes() %d", b.getRowBytes()));
    buf.position(0);
    b.copyPixelsToBuffer(buf);
    Log.v(TAG, String.format("makeFontBitmap results: capacity=%d", buf.capacity()));

    //      byte bytes[] = buf.array();
    //      for (int i = 0; i < size * size * 2; i++)
    //         bytes[i] = (byte)(Math.random() * 255);
    return buf.array();
}

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