Example usage for android.graphics Canvas Canvas

List of usage examples for android.graphics Canvas Canvas

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Introduction

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

Prototype

@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
public Canvas(long nativeCanvas)

Source Link

Usage

From source file:Main.java

public static Bitmap drawableToBitmap(Drawable drawable) {

    if (drawable instanceof BitmapDrawable) {
        return ((BitmapDrawable) drawable).getBitmap();
    }//from   w w w. j a va2s  . com

    Bitmap bitmap = Bitmap.createBitmap(128, 128, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);

    return bitmap;
}

From source file:Main.java

public static Bitmap getRoundBitmap(Bitmap bmp, float roundDP) {
    //      roundDP *= Constants.screen_density;
    Bitmap bmpOut = Bitmap.createBitmap(bmp.getWidth(), bmp.getHeight(), Config.ARGB_8888);
    Canvas c = new Canvas(bmpOut);
    final Paint p = new Paint();
    final RectF rectF = new RectF(0, 0, bmp.getWidth(), bmp.getHeight());

    p.setAntiAlias(true);//ww  w  .j  av a2 s. com
    c.drawARGB(0, 0, 0, 0);
    p.setColor(Color.BLACK);
    c.drawRoundRect(rectF, roundDP, roundDP, p);
    p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    c.drawBitmap(bmp, 0, 0, p);
    return bmpOut;
}

From source file:Main.java

public static Bitmap getNewCombinedByPiecesAlsoGrayscaled(List<Bitmap> bitmapList, int currentStage,
        int numStages) {
    Paint paint = new Paint();
    paint.setAntiAlias(true);/*from  w  w  w .  java2 s  .co  m*/
    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(0);
    ColorMatrixColorFilter colorMatrixColorFilter = new ColorMatrixColorFilter(cm);
    paint.setColorFilter(colorMatrixColorFilter);

    //i mean, don't use greyscale, but add here all the functionalities to reuse the canvas
    int originalTotalWidth = bitmapList.get(0).getWidth() * numStages;
    Bitmap finalBitmap = Bitmap.createBitmap(originalTotalWidth, bitmapList.get(0).getHeight(),
            Bitmap.Config.ARGB_8888);
    float delta = 0f;
    Canvas comboImage = new Canvas(finalBitmap);
    for (int i = 0; i < numStages; i++) {
        comboImage.translate(delta, 0f);
        if (i > currentStage) {
            comboImage.drawBitmap(bitmapList.get(i), 0f, 0f, paint);
        } else {
            comboImage.drawBitmap(bitmapList.get(i), 0f, 0f, null);
        }
        delta = originalTotalWidth / numStages;
    }
    return finalBitmap;
}

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;
    }/*from  ww w. j  a va 2  s .  com*/
    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 drawableToBitmap(Drawable drawable) {
    Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
            drawable.getOpacity() != PixelFormat.OPAQUE ? Config.ARGB_8888 : Config.RGB_565);
    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
    drawable.draw(canvas);//from w ww. java  2  s  . c  om
    return bitmap;
}

From source file:Main.java

public static Bitmap getBitmapFromDrawable(Drawable drawable) {
    if (drawable == null) {
        return null;
    }//from ww w.j  a v a  2  s  .c  o m
    if (drawable instanceof BitmapDrawable) {
        return ((BitmapDrawable) drawable).getBitmap();
    }
    try {
        Bitmap bitmap;
        if (drawable instanceof ColorDrawable) {
            bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION, COLORDRAWABLE_DIMENSION, BITMAP_CONFIG);
        } else {
            bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
                    BITMAP_CONFIG);
        }
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
        drawable.draw(canvas);
        return bitmap;
    } catch (OutOfMemoryError e) {
        return null;
    }
}

From source file:Main.java

/**
 * clip source bitmap into a circle bitmap
 *
 * @param src     the source bitmap/*from  ww  w . ja v a  2  s .  c o m*/
 * @param recycle whether recycle the source bitmap
 * @param config  bitmap config
 * @return clipped  circle bitmap
 */
public static Bitmap createCircleBitmap(Bitmap src, boolean recycle, Bitmap.Config config) {
    if (src == null) {
        return null;
    }
    if (config == null) {
        config = Bitmap.Config.ARGB_8888;
    }
    Bitmap out = Bitmap.createBitmap(src.getWidth(), src.getHeight(), config);
    final Rect rect = new Rect(0, 0, Math.min(src.getWidth(), src.getHeight()),
            Math.min(src.getWidth(), src.getHeight()));
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    Canvas canvas = new Canvas(out);
    canvas.drawARGB(0, 0, 0, 0);
    RectF rectF = new RectF(rect);
    canvas.drawOval(rectF, paint);

    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(src, rect, rect, paint);

    if (recycle) {
        src.recycle();
    }

    return out;

}

From source file:Main.java

/**
 * TODO: Never tested. I don't remember if it works, but plese don't remove this.
 *///from   w  w w  .  j  a v a  2 s  . co  m
private static Bitmap drawableToBitmap(Drawable drawable) {
    Bitmap bitmap = null;

    if (drawable instanceof BitmapDrawable) {
        BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
        if (bitmapDrawable.getBitmap() != null) {
            return bitmapDrawable.getBitmap();
        }
    }

    if (drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
        bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
    } else {
        bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
                Bitmap.Config.ARGB_8888);
    }

    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);
    return bitmap;
}

From source file:Main.java

/** Creates and returns a new bitmap which is the same as the provided bitmap
 * but with horizontal or vertical padding (if necessary)
 * either side of the original bitmap//from w  ww.j av a 2  s .  c o  m
 * so that the resulting bitmap is a square.
 * @param bitmap is the bitmap to pad.
 * @return the padded bitmap.*/
public static Bitmap padBitmap(Bitmap bitmap) {
    int paddingX;
    int paddingY;

    if (bitmap.getWidth() == bitmap.getHeight()) {
        paddingX = 0;
        paddingY = 0;
    } else if (bitmap.getWidth() > bitmap.getHeight()) {
        paddingX = 0;
        paddingY = bitmap.getWidth() - bitmap.getHeight();
    } else {
        paddingX = bitmap.getHeight() - bitmap.getWidth();
        paddingY = 0;
    }

    Bitmap paddedBitmap = Bitmap.createBitmap(bitmap.getWidth() + paddingX, bitmap.getHeight() + paddingY,
            Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(paddedBitmap);
    canvas.drawARGB(0xFF, 0xFF, 0xFF, 0xFF); // this represents white color
    canvas.drawBitmap(bitmap, paddingX / 2, paddingY / 2, new Paint(Paint.FILTER_BITMAP_FLAG));

    return paddedBitmap;
}

From source file:Main.java

public static Bitmap drawableToBitmap(Drawable drawable) {
    Bitmap bitmap = null;/*from   ww  w.j a v  a  2 s .c o  m*/

    if (drawable instanceof BitmapDrawable) {
        BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
        bitmapDrawable.setAntiAlias(true);
        bitmapDrawable.setDither(true);
        bitmapDrawable.setTargetDensity(Integer.MAX_VALUE);
        if (bitmapDrawable.getBitmap() != null) {
            return bitmapDrawable.getBitmap();
        }
    }

    if (drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
        bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
    } else {
        bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
                Bitmap.Config.ARGB_8888);
    }

    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);
    return bitmap;
}