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:Main.java

public static BitmapDrawable writeOnDrawable(Activity actv, Resources res, int drawableId, String text,
        int textSize) {

    Bitmap bm = BitmapFactory.decodeResource(res, drawableId).copy(Bitmap.Config.ARGB_8888, true);

    DisplayMetrics dm = new DisplayMetrics();
    actv.getWindowManager().getDefaultDisplay().getMetrics(dm);

    int pixelSize = (int) ((textSize * dm.scaledDensity));

    if (text.length() > 2) {
        pixelSize = (int) ((textSize * dm.scaledDensity) * (0.5 - (text.length() / 10)));
    }/*w  w  w. j a  v a 2  s . c o  m*/

    Paint paint = new Paint();
    paint.setStyle(Style.FILL);
    paint.setColor(Color.WHITE);
    paint.setTextSize(pixelSize);
    paint.setTextAlign(Paint.Align.CENTER);

    // float adjust = paint.measureText(text);

    Canvas canvas = new Canvas(bm);
    int xPos = (int) ((bm.getWidth() / 2));
    int yPos = (int) ((bm.getHeight() / 2) - ((paint.descent() + paint.ascent()) / 2));

    canvas.drawText(text, xPos, yPos, paint);

    return new BitmapDrawable(res, bm);
}

From source file:Main.java

/**
 * Draws a string that is aligned by one anchor point and rotated about
 * another anchor point.//w ww .  java 2  s. co m
 * 
 * @param text
 *            the text.
 * @param g2
 *            the graphics device.
 * @param x
 *            the location of the text anchor.
 * @param y
 *            the location of the text anchor.
 * @param textAnchor
 *            the text anchor.
 * @param rotationX
 *            the x-coordinate for the rotation anchor point.
 * @param rotationY
 *            the y-coordinate for the rotation anchor point.
 * @param angle
 *            the rotation angle.
 */
public static void drawRotatedString(final String text, final Canvas g2, final float x, final float y,
        final Paint paint, float angle) {

    //g2.drawCircle(x, y, 2, paint);
    g2.save();
    if (angle == 0.0)
        g2.drawText(text, x, y, paint);
    else {
        g2.rotate((float) Math.toDegrees(angle), x, y);
        g2.drawText(text, x, y, paint);
    }
    g2.restore();
}

From source file:Main.java

public static void drawCenterText(Canvas canvas, String text, Paint paint, Rect rect) {
    paint.getTextBounds(text, 0, text.length(), bounds);
    int x = (int) (rect.left + rect.width() / 2 - bounds.centerX());
    int y = (int) (rect.top + rect.height() / 2 - bounds.centerY());
    //Log.v(TAG," x="+x + " y="+y + " "+ text);
    canvas.drawText(text, x, y, paint);
}

From source file:Main.java

public static Bitmap getTextImage(String text, float size, int width, int height) {
    final Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    final Paint paint = new Paint();
    final Canvas canvas = new Canvas(bmp);

    canvas.drawColor(Color.WHITE);

    paint.setColor(Color.BLACK);/*from   w  w  w . j  av a  2 s . c  o  m*/
    paint.setStyle(Style.FILL);
    paint.setAntiAlias(true);
    paint.setTextAlign(Align.CENTER);
    paint.setTextSize(size);
    paint.setTypeface(Typeface.DEFAULT);
    canvas.drawText(text, width / 2, height / 2, paint);

    return bmp;
}

From source file:Main.java

public static void drawTextCenter(Canvas canvas, RectF rectf, String s, String s1, Paint paint, Paint paint1) {
    Rect rect = new Rect();
    paint.getTextBounds(s, 0, s.length(), rect);
    float f = rectf.left + (rectf.width() - (float) rect.width()) / 2.0F;
    float f1 = rectf.top + (rectf.height() + (float) rect.height()) / 2.0F;
    canvas.drawText(s, f, f1, paint);
    Rect rect1 = new Rect();
    paint1.getTextBounds(s, 0, s.length(), rect1);
    canvas.drawText(s1, 6F + (f + (float) rect.width()), (f1 - (float) rect.height()) + (float) rect1.height(),
            paint1);/*  w  w w. jav a  2  s .co m*/
}

From source file:Main.java

public static void drawFPS(Canvas canvas, String text) {
    if (PAINT_FPS == null) {
        PAINT_FPS = new Paint();
        PAINT_FPS.setColor(Color.RED);
        PAINT_FPS.setTextSize(30);/*from   ww w. j  ava2 s .com*/
    }
    int top = canvas.getHeight() - 50;

    clearCanvas(canvas, 10, top - 50, (int) (PAINT_FPS.measureText(text) + 20), canvas.getHeight());
    canvas.drawText(text, 10, top, PAINT_FPS);
}

From source file:Main.java

public static Bitmap int2Icon(Context context, int i) {
    Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), 0x7f020047);
    Bitmap bitmap1 = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),
            android.graphics.Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap1);
    Paint paint = new Paint();
    paint.setDither(true);/*from w w w . j a va2  s.  c o m*/
    paint.setFilterBitmap(true);
    canvas.drawBitmap(bitmap, 0.0F, 0.0F, paint);
    bitmap.recycle();
    Paint paint1 = new Paint(257);
    paint1.setColor(-1);
    paint1.setTypeface(Typeface.DEFAULT_BOLD);
    paint1.setTextAlign(android.graphics.Paint.Align.CENTER);
    canvas.drawText(String.valueOf(i), bitmap.getWidth() / 2, 3 + bitmap.getHeight() / 2, paint1);
    return bitmap1;
}

From source file:Main.java

public static Bitmap buildSequence(Context context, String text) {
    Bitmap myBitmap = Bitmap.createBitmap(160, 84, Bitmap.Config.ARGB_4444);
    Canvas myCanvas = new Canvas(myBitmap);
    Paint paint = new Paint();
    //Typeface font = Typeface.createFromAsset(context.getAssets(),"fonts/7LED.ttf");
    paint.setAntiAlias(true);//from   ww  w  .j  a  v  a  2  s .c  o m
    paint.setSubpixelText(true);
    //paint.setTypeface(font);
    paint.setStyle(Paint.Style.FILL);
    paint.setColor(Color.YELLOW);
    paint.setTextSize(65);
    paint.setTextAlign(Paint.Align.CENTER);
    myCanvas.drawText(text, 80, 60, paint);
    return myBitmap;
}

From source file:Main.java

public static Bitmap drawTextToBitmap(Bitmap bitmap, String gText) {
    OutputStream outStream = null;
    Bitmap.Config bitmapConfig = bitmap.getConfig();
    // set default bitmap config if none
    if (bitmapConfig == null) {
        bitmapConfig = Bitmap.Config.ARGB_8888;
    }/*ww w.j  a  va  2  s.c o m*/
    String dataPath = Environment.getExternalStorageDirectory().toString() + "/SignChat/Temp/temp" + "0"
            + pictureNum + ".jpg";

    try {

        FileOutputStream out = new FileOutputStream(dataPath);

        // NEWLY ADDED CODE STARTS HERE [
        Canvas canvas = new Canvas(bitmap);

        Paint paint = new Paint();
        paint.setColor(Color.WHITE); // Text Color
        paint.setStrokeWidth(12); // Text Size
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OVER)); // Text
        // Overlapping
        // Pattern
        // some more settings...

        canvas.drawBitmap(bitmap, 0, 0, paint);
        canvas.drawText("Testing...", 10, 10, paint);
        // NEWLY ADDED CODE ENDS HERE ]

        bitmap.compress(CompressFormat.JPEG, 90, out);
        out.flush();
        out.close();

    } catch (Exception e) {
        e.printStackTrace();
    }
    return bitmap;
}

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;
}