+
+ public static boolean cancelPotentialWork(Object file, ImageView imageView) {
+ final ThumbnailGenerationTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
+
+ if (bitmapWorkerTask != null) {
+ final Object bitmapData = bitmapWorkerTask.mFile;
+ // If bitmapData is not yet set or it differs from the new data
+ if (bitmapData == null || bitmapData != file) {
+ // Cancel previous task
+ bitmapWorkerTask.cancel(true);
+ Log_OC.v(TAG, "Cancelled generation of thumbnail for a reused imageView");
+ } else {
+ // The same work is already in progress
+ return false;
+ }
+ }
+ // No task associated with the ImageView, or an existing task was cancelled
+ return true;
+ }
+
+ public static ThumbnailGenerationTask getBitmapWorkerTask(ImageView imageView) {
+ if (imageView != null) {
+ final Drawable drawable = imageView.getDrawable();
+ if (drawable instanceof AsyncDrawable) {
+ final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
+ return asyncDrawable.getBitmapWorkerTask();
+ }
+ }
+ return null;
+ }
+
+ public static Bitmap addVideoOverlay(Bitmap thumbnail){
+ Bitmap playButton = BitmapFactory.decodeResource(MainApp.getAppContext().getResources(),
+ R.drawable.view_play);
+
+ Bitmap resizedPlayButton = Bitmap.createScaledBitmap(playButton,
+ (int) (thumbnail.getWidth() * 0.3),
+ (int) (thumbnail.getHeight() * 0.3), true);
+
+ Bitmap resultBitmap = Bitmap.createBitmap(thumbnail.getWidth(),
+ thumbnail.getHeight(),
+ Bitmap.Config.ARGB_8888);
+
+ Canvas c = new Canvas(resultBitmap);
+
+ // compute visual center of play button, according to resized image
+ int x1 = resizedPlayButton.getWidth();
+ int y1 = resizedPlayButton.getHeight() / 2;
+ int x2 = 0;
+ int y2 = resizedPlayButton.getWidth();
+ int x3 = 0;
+ int y3 = 0;
+
+ double ym = ( ((Math.pow(x3,2) - Math.pow(x1,2) + Math.pow(y3,2) - Math.pow(y1,2)) *
+ (x2 - x1)) - (Math.pow(x2,2) - Math.pow(x1,2) + Math.pow(y2,2) -
+ Math.pow(y1,2)) * (x3 - x1) ) / (2 * ( ((y3 - y1) * (x2 - x1)) -
+ ((y2 - y1) * (x3 - x1)) ));
+ double xm = ( (Math.pow(x2,2) - Math.pow(x1,2)) + (Math.pow(y2,2) - Math.pow(y1,2)) -
+ (2*ym*(y2 - y1)) ) / (2*(x2 - x1));
+
+ // offset to top left
+ double ox = - xm;
+ double oy = thumbnail.getHeight() - ym;
+
+
+ c.drawBitmap(thumbnail, 0, 0, null);
+
+ Paint p = new Paint();
+ p.setAlpha(230);
+
+ c.drawBitmap(resizedPlayButton, (float) ((thumbnail.getWidth() / 2) + ox),
+ (float) ((thumbnail.getHeight() / 2) - ym), p);
+
+ return resultBitmap;
+ }
+
projects / pub / Android / ownCloud.git / blobdiff