diff options
Diffstat (limited to 'src/com/android/launcher3/util')
| -rw-r--r-- | src/com/android/launcher3/util/CursorIconInfo.java | 5 | ||||
| -rw-r--r-- | src/com/android/launcher3/util/IconNormalizer.java | 250 |
2 files changed, 3 insertions, 252 deletions
diff --git a/src/com/android/launcher3/util/CursorIconInfo.java b/src/com/android/launcher3/util/CursorIconInfo.java index 4fefa986e..6603ee765 100644 --- a/src/com/android/launcher3/util/CursorIconInfo.java +++ b/src/com/android/launcher3/util/CursorIconInfo.java @@ -25,6 +25,7 @@ import android.text.TextUtils; import com.android.launcher3.LauncherSettings; import com.android.launcher3.ShortcutInfo; import com.android.launcher3.Utilities; +import com.android.launcher3.graphics.LauncherIcons; /** * Utility class to load icon from a cursor. @@ -59,7 +60,7 @@ public class CursorIconInfo { info.iconResource = new ShortcutIconResource(); info.iconResource.packageName = packageName; info.iconResource.resourceName = resourceName; - icon = Utilities.createIconBitmap(packageName, resourceName, mContext); + icon = LauncherIcons.createIconBitmap(packageName, resourceName, mContext); } if (icon == null) { // Failed to load from resource, try loading from DB. @@ -72,7 +73,7 @@ public class CursorIconInfo { * Loads the fixed bitmap from the icon if available. */ public Bitmap loadIcon(Cursor c) { - return Utilities.createIconBitmap(c, iconIndex, mContext); + return LauncherIcons.createIconBitmap(c, iconIndex, mContext); } /** diff --git a/src/com/android/launcher3/util/IconNormalizer.java b/src/com/android/launcher3/util/IconNormalizer.java deleted file mode 100644 index 040a1b51a..000000000 --- a/src/com/android/launcher3/util/IconNormalizer.java +++ /dev/null @@ -1,250 +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.launcher3.util; - -import android.graphics.Bitmap; -import android.graphics.Canvas; -import android.graphics.Color; -import android.graphics.RectF; -import android.graphics.drawable.Drawable; - -import com.android.launcher3.LauncherAppState; - -import java.nio.ByteBuffer; - -public class IconNormalizer { - - // Ratio of icon visible area to full icon size for a square shaped icon - private static final float MAX_SQUARE_AREA_FACTOR = 375.0f / 576; - // Ratio of icon visible area to full icon size for a circular shaped icon - private static final float MAX_CIRCLE_AREA_FACTOR = 380.0f / 576; - - private static final float CIRCLE_AREA_BY_RECT = (float) Math.PI / 4; - - // Slope used to calculate icon visible area to full icon size for any generic shaped icon. - private static final float LINEAR_SCALE_SLOPE = - (MAX_CIRCLE_AREA_FACTOR - MAX_SQUARE_AREA_FACTOR) / (1 - CIRCLE_AREA_BY_RECT); - - private static final int MIN_VISIBLE_ALPHA = 40; - - private static final Object LOCK = new Object(); - private static IconNormalizer sIconNormalizer; - - private final int mMaxSize; - private final Bitmap mBitmap; - private final Canvas mCanvas; - private final byte[] mPixels; - - // for each y, stores the position of the leftmost x and the rightmost x - private final float[] mLeftBorder; - private final float[] mRightBorder; - - private IconNormalizer() { - // Use twice the icon size as maximum size to avoid scaling down twice. - mMaxSize = LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize * 2; - mBitmap = Bitmap.createBitmap(mMaxSize, mMaxSize, Bitmap.Config.ALPHA_8); - mCanvas = new Canvas(mBitmap); - mPixels = new byte[mMaxSize * mMaxSize]; - - mLeftBorder = new float[mMaxSize]; - mRightBorder = new float[mMaxSize]; - } - - /** - * Returns the amount by which the {@param d} should be scaled (in both dimensions) so that it - * matches the design guidelines for a launcher icon. - * - * We first calculate the convex hull of the visible portion of the icon. - * This hull then compared with the bounding rectangle of the hull to find how closely it - * resembles a circle and a square, by comparing the ratio of the areas. Note that this is not an - * ideal solution but it gives satisfactory result without affecting the performance. - * - * This closeness is used to determine the ratio of hull area to the full icon size. - * Refer {@link #MAX_CIRCLE_AREA_FACTOR} and {@link #MAX_SQUARE_AREA_FACTOR} - * - * @param outBounds optional rect to receive the fraction distance from each edge. - */ - public synchronized float getScale(Drawable d, RectF outBounds) { - int width = d.getIntrinsicWidth(); - int height = d.getIntrinsicHeight(); - if (width <= 0 || height <= 0) { - width = width <= 0 || width > mMaxSize ? mMaxSize : width; - height = height <= 0 || height > mMaxSize ? mMaxSize : height; - } else if (width > mMaxSize || height > mMaxSize) { - int max = Math.max(width, height); - width = mMaxSize * width / max; - height = mMaxSize * height / max; - } - - mBitmap.eraseColor(Color.TRANSPARENT); - d.setBounds(0, 0, width, height); - d.draw(mCanvas); - - ByteBuffer buffer = ByteBuffer.wrap(mPixels); - buffer.rewind(); - mBitmap.copyPixelsToBuffer(buffer); - - // Overall bounds of the visible icon. - int topY = -1; - int bottomY = -1; - int leftX = mMaxSize + 1; - int rightX = -1; - - // Create border by going through all pixels one row at a time and for each row find - // the first and the last non-transparent pixel. Set those values to mLeftBorder and - // mRightBorder and use -1 if there are no visible pixel in the row. - - // buffer position - int index = 0; - // buffer shift after every row, width of buffer = mMaxSize - int rowSizeDiff = mMaxSize - width; - // first and last position for any row. - int firstX, lastX; - - for (int y = 0; y < height; y++) { - firstX = lastX = -1; - for (int x = 0; x < width; x++) { - if ((mPixels[index] & 0xFF) > MIN_VISIBLE_ALPHA) { - if (firstX == -1) { - firstX = x; - } - lastX = x; - } - index++; - } - index += rowSizeDiff; - - mLeftBorder[y] = firstX; - mRightBorder[y] = lastX; - - // If there is at least one visible pixel, update the overall bounds. - if (firstX != -1) { - bottomY = y; - if (topY == -1) { - topY = y; - } - - leftX = Math.min(leftX, firstX); - rightX = Math.max(rightX, lastX); - } - } - - if (topY == -1 || rightX == -1) { - // No valid pixels found. Do not scale. - return 1; - } - - convertToConvexArray(mLeftBorder, 1, topY, bottomY); - convertToConvexArray(mRightBorder, -1, topY, bottomY); - - // Area of the convex hull - float area = 0; - for (int y = 0; y < height; y++) { - if (mLeftBorder[y] <= -1) { - continue; - } - area += mRightBorder[y] - mLeftBorder[y] + 1; - } - - // Area of the rectangle required to fit the convex hull - float rectArea = (bottomY + 1 - topY) * (rightX + 1 - leftX); - float hullByRect = area / rectArea; - - float scaleRequired; - if (hullByRect < CIRCLE_AREA_BY_RECT) { - scaleRequired = MAX_CIRCLE_AREA_FACTOR; - } else { - scaleRequired = MAX_SQUARE_AREA_FACTOR + LINEAR_SCALE_SLOPE * (1 - hullByRect); - } - - if (outBounds != null) { - outBounds.left = ((float) leftX) / width; - outBounds.right = 1 - ((float) rightX) / width; - - outBounds.top = ((float) topY) / height; - outBounds.bottom = 1 - ((float) bottomY) / height; - } - - float areaScale = area / (width * height); - // Use sqrt of the final ratio as the images is scaled across both width and height. - float scale = areaScale > scaleRequired ? (float) Math.sqrt(scaleRequired / areaScale) : 1; - return scale; - } - - /** - * Modifies {@param xCordinates} to represent a convex border. Fills in all missing values - * (except on either ends) with appropriate values. - * @param xCordinates map of x coordinate per y. - * @param direction 1 for left border and -1 for right border. - * @param topY the first Y position (inclusive) with a valid value. - * @param bottomY the last Y position (inclusive) with a valid value. - */ - private static void convertToConvexArray( - float[] xCordinates, int direction, int topY, int bottomY) { - int total = xCordinates.length; - // The tangent at each pixel. - float[] angles = new float[total - 1]; - - int first = topY; // First valid y coordinate - int last = -1; // Last valid y coordinate which didn't have a missing value - - float lastAngle = Float.MAX_VALUE; - - for (int i = topY + 1; i <= bottomY; i++) { - if (xCordinates[i] <= -1) { - continue; - } - int start; - - if (lastAngle == Float.MAX_VALUE) { - start = first; - } else { - float currentAngle = (xCordinates[i] - xCordinates[last]) / (i - last); - start = last; - // If this position creates a concave angle, keep moving up until we find a - // position which creates a convex angle. - if ((currentAngle - lastAngle) * direction < 0) { - while (start > first) { - start --; - currentAngle = (xCordinates[i] - xCordinates[start]) / (i - start); - if ((currentAngle - angles[start]) * direction >= 0) { - break; - } - } - } - } - - // Reset from last check - lastAngle = (xCordinates[i] - xCordinates[start]) / (i - start); - // Update all the points from start. - for (int j = start; j < i; j++) { - angles[j] = lastAngle; - xCordinates[j] = xCordinates[start] + lastAngle * (j - start); - } - last = i; - } - } - - public static IconNormalizer getInstance() { - synchronized (LOCK) { - if (sIconNormalizer == null) { - sIconNormalizer = new IconNormalizer(); - } - } - return sIconNormalizer; - } -} |