| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.gallery3d.filtershow.filters; |
| |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Matrix; |
| import android.graphics.Rect; |
| import com.android.gallery3d.R; |
| import com.android.gallery3d.filtershow.presets.ImagePreset; |
| |
| public class ImageFilterVignette extends SimpleImageFilter { |
| private static final String LOGTAG = "ImageFilterVignette"; |
| private Bitmap mOverlayBitmap; |
| |
| public ImageFilterVignette() { |
| mName = "Vignette"; |
| } |
| |
| @Override |
| public FilterRepresentation getDefaultRepresentation() { |
| FilterVignetteRepresentation representation = new FilterVignetteRepresentation(); |
| return representation; |
| } |
| |
| native protected void nativeApplyFilter( |
| Bitmap bitmap, int w, int h, int cx, int cy, float radx, float rady, float strength); |
| |
| private float calcRadius(float cx, float cy, int w, int h) { |
| float d = cx; |
| if (d < (w - cx)) { |
| d = w - cx; |
| } |
| if (d < cy) { |
| d = cy; |
| } |
| if (d < (h - cy)) { |
| d = h - cy; |
| } |
| return d * d * 2.0f; |
| } |
| |
| @Override |
| public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { |
| if (SIMPLE_ICONS && ImagePreset.QUALITY_ICON == quality) { |
| if (mOverlayBitmap == null) { |
| Resources res = getEnvironment().getCachingPipeline().getResources(); |
| mOverlayBitmap = IconUtilities.getFXBitmap(res, |
| R.drawable.filtershow_icon_vignette); |
| } |
| Canvas c = new Canvas(bitmap); |
| int dim = Math.max(bitmap.getWidth(), bitmap.getHeight()); |
| Rect r = new Rect(0, 0, dim, dim); |
| c.drawBitmap(mOverlayBitmap, null, r, null); |
| return bitmap; |
| } |
| FilterVignetteRepresentation rep = (FilterVignetteRepresentation) getParameters(); |
| if (rep == null) { |
| return bitmap; |
| } |
| int w = bitmap.getWidth(); |
| int h = bitmap.getHeight(); |
| float value = rep.getValue() / 100.0f; |
| float cx = w / 2; |
| float cy = h / 2; |
| float r = calcRadius(cx, cy, w, h); |
| float rx = r; |
| float ry = r; |
| if (rep.isCenterSet()) { |
| Matrix m = getOriginalToScreenMatrix(w, h); |
| cx = rep.getCenterX(); |
| cy = rep.getCenterY(); |
| float[] center = new float[] { cx, cy }; |
| m.mapPoints(center); |
| cx = center[0]; |
| cy = center[1]; |
| rx = m.mapRadius(rep.getRadiusX()); |
| ry = m.mapRadius(rep.getRadiusY()); |
| } |
| nativeApplyFilter(bitmap, w, h, (int) cx, (int) cy, rx, ry, value); |
| return bitmap; |
| } |
| } |