Examples with Canvas android.graphics.Canvas used on opensource projects

Example 6 with Canvas

use of android.graphics.Canvas in project glide by bumptech.

the class CircleCropTest method createSolidRedBitmap.

private Bitmap createSolidRedBitmap(int width, int height) {
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(result);
    Paint paint = new Paint();
    paint.setColor(Color.RED);
    Rect rect = new Rect(0, 0, width, height);
    canvas.drawRect(rect, paint);
    return result;
}

Example 7 with Canvas

use of android.graphics.Canvas in project SMRadarScanView by asdzheng.

the class RadarScanView method onSizeChanged.

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    Log.i("Radar", w + "");
    centerX = w / 2;
    centerY = h / 2;
    //drawText高度会有偏差，这样的设置会让文字居中显示
    textY = centerY - ((mPaintText.descent() + mPaintText.ascent()) / 2);
    radarRadius = Math.min(centerX, centerY) - 2 * borderWidth;
    layerBitmap = Bitmap.createBitmap(2 * radarRadius, 2 * radarRadius, Bitmap.Config.ARGB_8888);
    layerCanvas = new Canvas(layerBitmap);
    layerCanvas.drawColor(layerColor);
    clearRect = new RectF();
    clearRect.bottom = 2 * radarRadius;
    clearRect.top = 0;
    clearRect.left = 0;
    clearRect.right = 2 * radarRadius;
}

Example 8 with Canvas

use of android.graphics.Canvas in project ADWLauncher2 by boombuler.

the class Launcher method showPreviews.

private void showPreviews(final View anchor, int start, int end) {
    final Resources resources = getResources();
    final Workspace workspace = mWorkspace;
    CellLayout cell = ((CellLayout) workspace.getChildAt(start));
    float max = workspace.getChildCount();
    final Rect r = new Rect();
    resources.getDrawable(R.drawable.preview_background).getPadding(r);
    int extraW = (int) ((r.left + r.right) * max);
    int extraH = r.top + r.bottom;
    int aW = cell.getWidth() - extraW;
    float w = aW / max;
    int width = cell.getWidth();
    int height = cell.getHeight();
    int x = cell.getLeftPadding();
    int y = cell.getTopPadding();
    width -= (x + cell.getRightPadding());
    height -= (y + cell.getBottomPadding());
    float scale = w / width;
    int count = end - start;
    final float sWidth = width * scale;
    float sHeight = height * scale;
    LinearLayout preview = new LinearLayout(this);
    PreviewTouchHandler handler = new PreviewTouchHandler(anchor);
    ArrayList<Bitmap> bitmaps = new ArrayList<Bitmap>(count);
    for (int i = start; i < end; i++) {
        ImageView image = new ImageView(this);
        cell = (CellLayout) workspace.getChildAt(i);
        final Bitmap bitmap = Bitmap.createBitmap((int) sWidth, (int) sHeight, Bitmap.Config.ARGB_8888);
        final Canvas c = new Canvas(bitmap);
        c.scale(scale, scale);
        c.translate(-cell.getLeftPadding(), -cell.getTopPadding());
        cell.dispatchDraw(c);
        image.setBackgroundDrawable(resources.getDrawable(R.drawable.preview_background));
        image.setImageBitmap(bitmap);
        image.setTag(i);
        image.setOnClickListener(handler);
        image.setOnFocusChangeListener(handler);
        image.setFocusable(true);
        if (i == mWorkspace.getCurrentScreen())
            image.requestFocus();
        preview.addView(image, LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        bitmaps.add(bitmap);
    }
    final PopupWindow p = new PopupWindow(this);
    p.setContentView(preview);
    p.setWidth((int) (sWidth * count + extraW));
    p.setHeight((int) (sHeight + extraH));
    p.setAnimationStyle(R.style.AnimationPreview);
    p.setOutsideTouchable(true);
    p.setFocusable(true);
    p.setBackgroundDrawable(new ColorDrawable(0));
    p.showAsDropDown(anchor, 0, 0);
    p.setOnDismissListener(new PopupWindow.OnDismissListener() {

        public void onDismiss() {
            dismissPreview(anchor);
        }
    });
    anchor.setTag(p);
    anchor.setTag(R.id.workspace, preview);
    anchor.setTag(R.id.icon, bitmaps);
}

Example 9 with Canvas

use of android.graphics.Canvas in project ADWLauncher2 by boombuler.

the class IconCache method makeDefaultIcon.

private Bitmap makeDefaultIcon() {
    Drawable d = mPackageManager.getDefaultActivityIcon();
    Bitmap b = Bitmap.createBitmap(Math.max(d.getIntrinsicWidth(), 1), Math.max(d.getIntrinsicHeight(), 1), Bitmap.Config.ARGB_8888);
    Canvas c = new Canvas(b);
    d.setBounds(0, 0, b.getWidth(), b.getHeight());
    d.draw(c);
    return b;
}

Example 10 with Canvas

use of android.graphics.Canvas in project VirtualApp by asLody.

the class DrawableUtils method drawableToBitMap.

public static Bitmap drawableToBitMap(Drawable drawable) {
    if (drawable == null) {
        return null;
    }
    if (drawable instanceof BitmapDrawable) {
        BitmapDrawable bitmapDrawable = ((BitmapDrawable) drawable);
        return bitmapDrawable.getBitmap();
    } else {
        Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565);
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        drawable.draw(canvas);
        return bitmap;
    }
}