Example usage for android.graphics Canvas drawRect

Introduction

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

Prototype

public void drawRect(@NonNull Rect r, @NonNull Paint paint) 

Source Link

Document

Draw the specified Rect using the specified Paint.

Usage

From source file:Main.java

private static void clearCanvas(Canvas canvas, RectF rect) {
    if (rect.width() <= 0 || rect.height() <= 0) {
        return;/*from  ww  w.  j  a  v  a 2 s. co  m*/
    }
    canvas.drawRect(rect, PAINT);
}

---

From source file:Main.java

public static void drawCropRect(Canvas canvas, RectF bounds) {
    Paint p = new Paint();
    p.setStyle(Paint.Style.STROKE);
    p.setColor(Color.WHITE);//from   w ww.j  av  a  2s  .  co  m
    p.setStrokeWidth(3);
    canvas.drawRect(bounds, p);
}

---

From source file:Main.java

public static void erase(Canvas canvas, RectF rectf) {
    Paint paint = new Paint();
    paint.setColor(0);//from   ww  w  .jav  a2 s .  c  o  m
    paint.setDither(true);
    paint.setXfermode(new PorterDuffXfermode(android.graphics.PorterDuff.Mode.CLEAR));
    canvas.drawRect(rectf, paint);
}

---

From source file:Main.java

public static Bitmap createFramedImage(Drawable imageDrawable, int borderThickness) {
    int size = Math.min(imageDrawable.getMinimumWidth(), imageDrawable.getMinimumHeight());
    Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    RectF outerRect = new RectF(0, 0, size, size);

    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setColor(Color.RED);/*from w  w  w.java 2s.  c o  m*/
    canvas.drawRect(outerRect, paint);

    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    imageDrawable.setBounds(0, 0, size, size);

    // Save the layer to apply the paint
    canvas.saveLayer(outerRect, paint, Canvas.ALL_SAVE_FLAG);
    imageDrawable.draw(canvas);
    canvas.restore();

    // FRAMING THE PHOTO
    float border = size / 15f;

    // 1. Create offscreen bitmap link: http://www.youtube.com/watch?feature=player_detailpage&v=jF6Ad4GYjRU#t=1035s
    Bitmap framedOutput = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
    Canvas framedCanvas = new Canvas(framedOutput);
    // End of Step 1

    // Start - TODO IMPORTANT - this section shouldn't be included in the final code
    // It's needed here to differentiate step 2 (red) with the background color of the activity
    // It's should be commented out after the codes includes step 3 onwards
    // Paint squaredPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    // squaredPaint.setColor(Color.BLUE);
    // framedCanvas.drawRoundRect(outerRect, 0f, 0f, squaredPaint);
    // End

    // 2. Draw an opaque rounded rectangle link:
    RectF innerRect = new RectF(border, border, size - border, size - border);

    Paint innerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    innerPaint.setColor(Color.RED);
    //      framedCanvas.drawRoundRect(innerRect, cornerRadius, cornerRadius, outerPaint);
    framedCanvas.drawRect(innerRect, innerPaint);

    // 3. Set the Power Duff mode link:
    Paint outerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    outerPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OUT));

    // 4. Draw a translucent rounded rectangle link:
    outerPaint.setColor(Color.argb(255, 255, 255, 255));
    //      framedCanvas.drawRoundRect(outerRect, cornerRadius, cornerRadius, outerPaint);
    framedCanvas.drawRect(outerRect, outerPaint);

    // 5. Draw the frame on top of original bitmap
    canvas.drawBitmap(framedOutput, 0f, 0f, null);

    return output;
}

---

From source file:Main.java

public static void drawShade(Canvas canvas, RectF bounds) {
    int w = canvas.getWidth();
    int h = canvas.getHeight();
    Paint p = new Paint();
    p.setStyle(Paint.Style.FILL);
    p.setColor(Color.BLACK & 0x88000000);

    RectF r = new RectF();
    r.set(0, 0, w, bounds.top);/*from  ww  w  .ja  v a2s .c  o m*/
    canvas.drawRect(r, p);
    r.set(0, bounds.top, bounds.left, h);
    canvas.drawRect(r, p);
    r.set(bounds.left, bounds.bottom, w, h);
    canvas.drawRect(r, p);
    r.set(bounds.right, bounds.top, w, bounds.bottom);
    canvas.drawRect(r, p);
}

---

From source file:com.daycle.daycleapp.custom.swipelistview.itemmanipulation.dragdrop.BitmapUtils.java

/**
 * Returns a bitmap showing a screenshot of the view passed in.
 *//*w w  w  .  jav  a  2 s.  com*/
@NonNull
static Bitmap getBitmapFromView(@NonNull final View v) {
    Bitmap bitmap = Bitmap.createBitmap(v.getMeasuredWidth(), v.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    Paint p = new Paint();
    p.setColor(ContextCompat.getColor(v.getContext(), R.color.colorAccent));
    p.setAlpha(50);
    //v.setBackgroundColor(ContextCompat.getColor(v.getContext(), android.R.color.transparent));
    v.draw(canvas);
    //canvas.drawCircle((float)(v.getWidth() / 2), (float)(v.getHeight() / 2), 10, p);
    canvas.drawRect(new Rect(0, 0, v.getWidth(), v.getHeight()), p);
    return bitmap;
}

---

From source file:Main.java

/**
 * Draw the face rect in the Image// w ww.  j  ava2s.  com
 * @param canvas
 * @param face
 * @param width
 * @param height
 * @param frontCamera
 */
static public void drawFaceRect(Canvas canvas, Rect rect, int width, int height, boolean frontCamera) {

    if (canvas == null)
        return;

    Paint paint = new Paint();
    paint.setColor(Color.rgb(57, 138, 243));
    int len = (rect.bottom - rect.top) / 8;
    if (len / 8 >= 2)
        paint.setStrokeWidth(len / 8);
    else
        paint.setStrokeWidth(2);

    if (frontCamera) {
        int left = rect.left;
        rect.left = width - rect.right;
        rect.right = width - left;
    }

    paint.setStyle(Style.STROKE);
    canvas.drawRect(rect, paint);
}

---

From source file:Main.java

/**
 * Return rounded bitmap with top left corner as rounded using specified bitmap and bitmap size in pixels.
 * // w ww  . j ava  2 s. co m
 * @param bitmap to make rounded
 * @param pixels size of bitmap
 * @return slightly rounded bitmap.
 */
public static Bitmap getRoundedTopLeftCornerBitmap(Bitmap bitmap, int pixels) {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    final int color = 0xff424242;
    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
    final RectF rectF = new RectF(rect);
    final float roundPx = pixels;
    final Rect topRightRect = new Rect(bitmap.getWidth() / 2, 0, bitmap.getWidth(), bitmap.getHeight() / 2);
    final Rect bottomRect = new Rect(0, bitmap.getHeight() / 2, bitmap.getWidth(), bitmap.getHeight());

    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
    // Fill in upper right corner
    canvas.drawRect(topRightRect, paint);
    // Fill in bottom corners
    canvas.drawRect(bottomRect, paint);

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

    return output;
}

---

From source file:Main.java

public static Bitmap getMosaic(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int radius = 10;

    Bitmap mosaicBitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    Canvas canvas = new Canvas(mosaicBitmap);

    int horCount = (int) Math.ceil(width / (float) radius);
    int verCount = (int) Math.ceil(height / (float) radius);

    Paint paint = new Paint();
    paint.setAntiAlias(true);//from  w w  w . j  av a 2 s  .  c om

    for (int horIndex = 0; horIndex < horCount; ++horIndex) {
        for (int verIndex = 0; verIndex < verCount; ++verIndex) {
            int l = radius * horIndex;
            int t = radius * verIndex;
            int r = l + radius;
            if (r > width) {
                r = width;
            }
            int b = t + radius;
            if (b > height) {
                b = height;
            }
            int color = bitmap.getPixel(l, t);
            Rect rect = new Rect(l, t, r, b);
            paint.setColor(color);
            canvas.drawRect(rect, paint);
        }
    }
    canvas.save();

    return mosaicBitmap;
}

---

From source file:Main.java

public static Bitmap getColorPreviewBitmap(final Context context, final int color, final boolean border) {
    if (context == null)
        return null;
    final float density = context.getResources().getDisplayMetrics().density;
    final int width = (int) (32 * density), height = (int) (32 * density);

    final Bitmap bm = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    final Canvas canvas = new Canvas(bm);

    final int rectangleSize = (int) (density * 5);
    final int numRectanglesHorizontal = (int) Math.ceil(width / rectangleSize);
    final int numRectanglesVertical = (int) Math.ceil(height / rectangleSize);
    final Rect r = new Rect();
    boolean verticalStartWhite = true;
    for (int i = 0; i <= numRectanglesVertical; i++) {

        boolean isWhite = verticalStartWhite;
        for (int j = 0; j <= numRectanglesHorizontal; j++) {

            r.top = i * rectangleSize;// w  w w .j  a v a  2 s.  c  o  m
            r.left = j * rectangleSize;
            r.bottom = r.top + rectangleSize;
            r.right = r.left + rectangleSize;
            final Paint paint = new Paint();
            paint.setColor(isWhite ? Color.WHITE : Color.GRAY);

            canvas.drawRect(r, paint);

            isWhite = !isWhite;
        }

        verticalStartWhite = !verticalStartWhite;

    }
    canvas.drawColor(color);
    if (border) {
        final Paint paint = new Paint();
        paint.setColor(Color.WHITE);
        paint.setStrokeWidth(1f * density);
        final float[] points = new float[] { 0, 0, width, 0, 0, 0, 0, height, width, 0, width, height, 0,
                height, width, height };
        canvas.drawLines(points, paint);
    }
    return bm;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• »