diff options
Diffstat (limited to 'src/com/android/gallery3d/filtershow/filters/ImageFilterDownsample.java')
-rw-r--r-- | src/com/android/gallery3d/filtershow/filters/ImageFilterDownsample.java | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterDownsample.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterDownsample.java new file mode 100644 index 000000000..efb9cde71 --- /dev/null +++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterDownsample.java @@ -0,0 +1,83 @@ +/* + * 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.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Rect; + +import com.android.gallery3d.R; +import com.android.gallery3d.filtershow.cache.ImageLoader; +import com.android.gallery3d.filtershow.imageshow.MasterImage; + +public class ImageFilterDownsample extends SimpleImageFilter { + private static final String SERIALIZATION_NAME = "DOWNSAMPLE"; + private static final int ICON_DOWNSAMPLE_FRACTION = 8; + private ImageLoader mImageLoader; + + public ImageFilterDownsample(ImageLoader loader) { + mName = "Downsample"; + mImageLoader = loader; + } + + public FilterRepresentation getDefaultRepresentation() { + FilterBasicRepresentation representation = (FilterBasicRepresentation) super.getDefaultRepresentation(); + representation.setName("Downsample"); + representation.setSerializationName(SERIALIZATION_NAME); + + representation.setFilterClass(ImageFilterDownsample.class); + representation.setMaximum(100); + representation.setMinimum(1); + representation.setValue(50); + representation.setDefaultValue(50); + representation.setPreviewValue(3); + representation.setTextId(R.string.downsample); + return representation; + } + + @Override + public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { + if (getParameters() == null) { + return bitmap; + } + int w = bitmap.getWidth(); + int h = bitmap.getHeight(); + int p = getParameters().getValue(); + + // size of original precached image + Rect size = MasterImage.getImage().getOriginalBounds(); + int orig_w = size.width(); + int orig_h = size.height(); + + if (p > 0 && p < 100) { + // scale preview to same size as the resulting bitmap from a "save" + int newWidth = orig_w * p / 100; + int newHeight = orig_h * p / 100; + + // only scale preview if preview isn't already scaled enough + if (newWidth <= 0 || newHeight <= 0 || newWidth >= w || newHeight >= h) { + return bitmap; + } + Bitmap ret = Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true); + if (ret != bitmap) { + bitmap.recycle(); + } + return ret; + } + return bitmap; + } +} |