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 Bitmap text2Bitmap(String text, int color, float size) {
    if (TextUtils.isEmpty(text)) {
        return null;
    }/*from  w  w  w. j  av  a2s  . c om*/

    Paint paint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
    paint.setTextSize(size);
    paint.setColor(color);
    paint.setTextAlign(Paint.Align.LEFT);

    float baseline = -paint.ascent();
    int width = (int) (paint.measureText(text) + 0.5f);
    int height = (int) (baseline + paint.descent() + 0.5f);

    Bitmap image = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(image);
    canvas.drawText(text, 0, baseline, paint);
    return image;
}

From source file:Main.java

private static Drawable getMoreSuggestionsHint(final Resources res, final float textSize, final int color) {
    final Paint paint = new Paint();
    paint.setAntiAlias(true);/*from   www.java  2  s.c  o m*/
    paint.setTextAlign(Align.CENTER);
    paint.setTextSize(textSize);
    paint.setColor(color);
    final Rect bounds = new Rect();
    paint.getTextBounds(MORE_SUGGESTIONS_HINT, 0, MORE_SUGGESTIONS_HINT.length(), bounds);
    final int width = Math.round(bounds.width() + 0.5f);
    final int height = Math.round(bounds.height() + 0.5f);
    final Bitmap buffer = Bitmap.createBitmap(width, (height * 3 / 2), Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(buffer);
    canvas.drawText(MORE_SUGGESTIONS_HINT, width / 2, height, paint);
    return new BitmapDrawable(res, buffer);
}

From source file:Main.java

public static void drawButtonText(Canvas canvas, Paint paint, Rect btnRect, String text) {
    int nLen = text.length();
    canvas.drawText(text, btnRect.left + btnRect.width() / 2 - 4 * nLen,
            btnRect.top + btnRect.height() / 2 + nLen, paint);
}

From source file:Main.java

private static Drawable getMoreSuggestionsHint(final Resources res, final float textSize, final int color) {
    final Paint paint = new Paint();
    paint.setAntiAlias(true);/*from w ww.  j a va 2  s . c  o  m*/
    paint.setTextAlign(Align.CENTER);
    paint.setTextSize(textSize);
    paint.setColor(color);
    final Rect bounds = new Rect();
    paint.getTextBounds(MORE_SUGGESTIONS_HINT, 0, MORE_SUGGESTIONS_HINT.length(), bounds);
    final int width = Math.round(bounds.width() + 0.5f);
    final int height = Math.round(bounds.height() + 0.5f);
    final Bitmap buffer = Bitmap.createBitmap(width, (height * 3 / 2), Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(buffer);
    canvas.drawText(MORE_SUGGESTIONS_HINT, width / 2, height, paint);
    BitmapDrawable bitmapDrawable = new BitmapDrawable(res, buffer);
    bitmapDrawable.setTargetDensity(canvas);
    return bitmapDrawable;
}

From source file:Main.java

public static void drawMultiline(Canvas canvas, String str, int x, int y, Paint paint) {
    for (String line : str.split("\n")) {
        canvas.drawText(line, x, y, paint);
        y += -paint.ascent() + paint.descent();
    }//from   ww  w  .  j  a  va2s  .  co m
}

From source file:Main.java

public static void drawDebugOutput(Canvas c) {
    int vertical_spacing = 0;

    for (String key : debugOutput.keySet()) {
        c.drawText(key + ": " + debugOutput.get(key), 20, 200 + vertical_spacing, whitePaint);
        vertical_spacing += whitePaint.getTextSize();
    }/*from   w w  w .j a va 2  s. c  o  m*/
}

From source file:Main.java

/**
 * The most useful answer about text drawing ever. http://stackoverflow.com/a/32081250
 *///from   w w w. jav  a  2s  . co 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;
}

From source file:Main.java

public static void drawText(Canvas canvas, String text, float x, float y, Paint paint, float angle) {
    if (angle != 0F)
        canvas.rotate(angle, x, y);/*from   w w w  .j a v  a2s .com*/

    canvas.drawText(text, x, y, paint);
    if (angle != 0F)
        canvas.rotate(-angle, x, y);
}

From source file:Main.java

public static void drawTextCenter(Canvas canvas, RectF rectf, String s, Paint paint) {
    Rect rect = new Rect();
    paint.getTextBounds(s, 0, s.length(), rect);
    canvas.drawText(s, rectf.left + (rectf.width() - (float) rect.width()) / 2.0F,
            rectf.top + (rectf.height() + (float) rect.height()) / 2.0F, paint);
}

From source file:Main.java

public static void drawText(String text, float x, float y, Canvas canvas, Paint paint) {
    Rect rect = new Rect();
    paint.getTextBounds(text, 0, 1, rect);
    float halfW = paint.measureText(text) / 2;
    canvas.drawText(text, x - halfW, y + halfW, paint);
}