Example usage for android.graphics Canvas drawBitmap

Introduction

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

Prototype

public void drawBitmap(@NonNull Bitmap bitmap, @Nullable Rect src, @NonNull Rect dst, @Nullable Paint paint)

Source Link

Document

Draw the specified bitmap, scaling/translating automatically to fill the destination rectangle.

Usage

From source file:Main.java

public static Bitmap convertToAlphaMask(Bitmap b) {
    Bitmap a = Bitmap.createBitmap(b.getWidth(), b.getHeight(), Bitmap.Config.ALPHA_8);
    Canvas c = new Canvas(a);
    c.drawBitmap(b, 0.0f, 0.0f, null);
    return a;/*from  w  ww . j  a  va 2 s.c  o  m*/
}

From source file:Main.java

public static Bitmap overlay(Bitmap b, int x, int y) {
    Bitmap empty = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_4444);
    Canvas cv = new Canvas(empty);
    cv.drawBitmap(b, 0, 0, null);
    cv.save();/*from w  w  w . ja v  a 2  s .  c om*/
    return empty;
}

From source file:Main.java

public static Bitmap compoundBitmap(Bitmap bg, Bitmap fg, int left, int top) {
    Bitmap result = Bitmap.createBitmap(bg.getWidth(), bg.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(result);
    canvas.drawBitmap(bg, 0, 0, null);
    canvas.drawBitmap(fg, left, top, null);

    return result;
}

From source file:Main.java

public static Bitmap convertToAlphaMask(Bitmap b) {
    Bitmap a = Bitmap.createBitmap(b.getWidth(), b.getHeight(), Bitmap.Config.ALPHA_8);
    Canvas c = new Canvas(a);
    c.drawBitmap(b, 0.0f, 0.0f, null);

    return a;/*w  ww.j  ava2  s  .c  o  m*/
}

From source file:Main.java

public static Bitmap cropBitmap(Bitmap bitmap, Rect rect) {
    int w = rect.right - rect.left;
    int h = rect.bottom - rect.top;
    Bitmap ret = Bitmap.createBitmap(w, h, bitmap.getConfig());
    Canvas canvas = new Canvas(ret);
    canvas.drawBitmap(bitmap, -rect.left, -rect.top, null);
    bitmap.recycle();//w w  w. j  ava2s  .  co  m
    return ret;
}

From source file:Main.java

public static Bitmap setBrightness(Bitmap srcBitmap, int brightness) {
    Bitmap bitmap = Bitmap.createBitmap(srcBitmap);
    ColorMatrix cm = new ColorMatrix(new float[] { 1, 0, 0, 0, brightness, 0, 1, 0, 0, brightness, 0, 0, 1, 0,
            brightness, 0, 0, 0, 1, 0 });
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(cm));
    Canvas canvas = new Canvas(bitmap);
    canvas.drawBitmap(srcBitmap, 0, 0, paint);
    return bitmap;
}

From source file:Main.java

public static Bitmap converttoBitmap565(Bitmap b) {
    if (b == null) {
        return null;
    }//from  w  w w  .j  a va 2s.  com
    if (b.getConfig() == Bitmap.Config.RGB_565) {
        return b;
    }
    Bitmap b565 = Bitmap.createBitmap(b.getWidth(), b.getHeight(), Bitmap.Config.RGB_565);
    Canvas c = new Canvas(b565);
    c.drawBitmap(b, 0, 0, null);
    return b565;
}

From source file:Main.java

/**
 * Create a bitmap from a background and a foreground bitmap
 *
 * @param background The bitmap placed in the background
 * @param foreground The bitmap placed in the foreground
 * @return the merged bitmap/*from  w w w. j a  va2s  .  c  om*/
 */
public static Bitmap mergeBitmap(@NonNull Bitmap background, @NonNull Bitmap foreground) {
    Bitmap result = Bitmap.createBitmap(background.getWidth(), background.getHeight(), background.getConfig());
    Canvas canvas = new Canvas(result);
    canvas.drawBitmap(background, 0f, 0f, null);
    canvas.drawBitmap(foreground, 10, 10, null);
    return result;
}

From source file:Main.java

public static Bitmap getPaintedBitmap(Bitmap bitmap, Paint paint, boolean deleteOld) {
    final Bitmap colorBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
    final Canvas c = new Canvas(colorBitmap);
    c.drawBitmap(bitmap, 0, 0, paint);
    if (deleteOld) {
        bitmap.recycle();/*from   w w  w  . j av  a 2s . c o  m*/
    }
    return colorBitmap;
}

From source file:Main.java

public static Bitmap changeImageColor(Bitmap sourceBitmap, int color) {
    Bitmap resultBitmap = Bitmap.createBitmap(sourceBitmap, 0, 0, sourceBitmap.getWidth() - 1,
            sourceBitmap.getHeight() - 1);
    Paint p = new Paint();
    p.setColor(color);/*from   www  .ja va2s  . co  m*/
    ColorFilter filter = new LightingColorFilter(color, 1);

    Canvas canvas = new Canvas(resultBitmap);
    canvas.drawBitmap(resultBitmap, 0, 0, p);
    return resultBitmap;
}