diff options
Diffstat (limited to 'src/com/android/messaging/datamodel/media/AvatarGroupRequestDescriptor.java')
| -rw-r--r-- | src/com/android/messaging/datamodel/media/AvatarGroupRequestDescriptor.java | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/src/com/android/messaging/datamodel/media/AvatarGroupRequestDescriptor.java b/src/com/android/messaging/datamodel/media/AvatarGroupRequestDescriptor.java deleted file mode 100644 index 719b296..0000000 --- a/src/com/android/messaging/datamodel/media/AvatarGroupRequestDescriptor.java +++ /dev/null @@ -1,159 +0,0 @@ -/* - * Copyright (C) 2015 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.messaging.datamodel.media; - -import android.content.Context; -import android.graphics.RectF; -import android.net.Uri; - -import com.android.messaging.util.Assert; -import com.android.messaging.util.AvatarUriUtil; - -import java.util.ArrayList; -import java.util.Arrays; -import java.util.List; - -public class AvatarGroupRequestDescriptor extends CompositeImageRequestDescriptor { - private static final int MAX_GROUP_SIZE = 4; - - public AvatarGroupRequestDescriptor(final Uri uri, final int desiredWidth, - final int desiredHeight) { - this(convertToDescriptor(uri, desiredWidth, desiredHeight), desiredWidth, desiredHeight); - } - - public AvatarGroupRequestDescriptor(final List<? extends ImageRequestDescriptor> descriptors, - final int desiredWidth, final int desiredHeight) { - super(descriptors, desiredWidth, desiredHeight); - Assert.isTrue(descriptors.size() <= MAX_GROUP_SIZE); - } - - private static List<? extends ImageRequestDescriptor> convertToDescriptor(final Uri uri, - final int desiredWidth, final int desiredHeight) { - final List<String> participantUriStrings = AvatarUriUtil.getGroupParticipantUris(uri); - final List<AvatarRequestDescriptor> avatarDescriptors = - new ArrayList<AvatarRequestDescriptor>(participantUriStrings.size()); - for (final String uriString : participantUriStrings) { - final AvatarRequestDescriptor descriptor = new AvatarRequestDescriptor( - Uri.parse(uriString), desiredWidth, desiredHeight); - avatarDescriptors.add(descriptor); - } - return avatarDescriptors; - } - - @Override - public CompositeImageRequest<?> buildBatchImageRequest(final Context context) { - return new CompositeImageRequest<AvatarGroupRequestDescriptor>(context, this); - } - - @Override - public List<RectF> getChildRequestTargetRects() { - return Arrays.asList(generateDestRectArray()); - } - - /** - * Generates an array of {@link RectF} which represents where each of the individual avatar - * should be located in the final group avatar image. The location of each avatar depends on - * the size of the group and the size of the overall group avatar size. - */ - private RectF[] generateDestRectArray() { - final int groupSize = mDescriptors.size(); - final float width = desiredWidth; - final float height = desiredHeight; - final float halfWidth = width / 2F; - final float halfHeight = height / 2F; - final RectF[] destArray = new RectF[groupSize]; - switch (groupSize) { - case 2: - /** - * +-------+ - * | 0 | | - * +-------+ - * | | 1 | - * +-------+ - * - * We want two circles which touches in the center. To get this we know that the - * diagonal of the overall group avatar is squareRoot(2) * w We also know that the - * two circles touches the at the center of the overall group avatar and the - * distance from the center of the circle to the corner of the group avatar is - * radius * squareRoot(2). Therefore, the following emerges. - * - * w * squareRoot(2) = 2 (radius + radius * squareRoot(2)) - * Solving for radius we get: - * d = 2 * radius = ( squareRoot(2) / (squareRoot(2) + 1)) * w - * d = (2 - squareRoot(2)) * w - */ - final float diameter = (float) ((2 - Math.sqrt(2)) * width); - destArray[0] = new RectF(0, 0, diameter, diameter); - destArray[1] = new RectF(width - diameter, height - diameter, width, height); - break; - case 3: - /** - * +-------+ - * | | 0 | | - * +-------+ - * | 1 | 2 | - * +-------+ - * i0 - * |\ - * a | \ c - * --- i2 - * b - * - * a = radius * squareRoot(3) due to the triangle being a 30-60-90 right triangle. - * b = radius of circle - * c = 2 * radius of circle - * - * All three of the images are circles and therefore image zero will not touch - * image one or image two. Move image zero down so it touches image one and image - * two. This can be done by keeping image zero in the center and moving it down - * slightly. The amount to move down can be calculated by solving a right triangle. - * We know that the center x of image two to the center x of image zero is the - * radius of the circle, this is the length of edge b. Also we know that the - * distance from image zero to image two's center is 2 * radius, edge c. From this - * we know that the distance from center y of image two to center y of image one, - * edge a, is equal to radius * squareRoot(3) due to this triangle being a 30-60-90 - * right triangle. - */ - final float quarterWidth = width / 4F; - final float threeQuarterWidth = 3 * quarterWidth; - final float radius = height / 4F; - final float imageTwoCenterY = height - radius; - final float lengthOfEdgeA = (float) (radius * Math.sqrt(3)); - final float imageZeroCenterY = imageTwoCenterY - lengthOfEdgeA; - final float imageZeroTop = imageZeroCenterY - radius; - final float imageZeroBottom = imageZeroCenterY + radius; - destArray[0] = new RectF( - quarterWidth, imageZeroTop, threeQuarterWidth, imageZeroBottom); - destArray[1] = new RectF(0, halfHeight, halfWidth, height); - destArray[2] = new RectF(halfWidth, halfHeight, width, height); - break; - default: - /** - * +-------+ - * | 0 | 1 | - * +-------+ - * | 2 | 3 | - * +-------+ - */ - destArray[0] = new RectF(0, 0, halfWidth, halfHeight); - destArray[1] = new RectF(halfWidth, 0, width, halfHeight); - destArray[2] = new RectF(0, halfHeight, halfWidth, height); - destArray[3] = new RectF(halfWidth, halfHeight, width, height); - break; - } - return destArray; - } -} |