1 files changed, 98 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterVignette.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterVignette.java
new file mode 100644
index 000000000..7e0a452bf
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterVignette.java
@@ -0,0 +1,98 @@
+/*
+ * 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.pipeline.FilterEnvironment;
+
+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 && FilterEnvironment.QUALITY_ICON == quality) {
+            if (mOverlayBitmap == null) {
+                Resources res = getEnvironment().getPipeline().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;
+    }
+}