diff options
Diffstat (limited to 'src/com/android/launcher3/HolographicOutlineHelper.java')
| -rw-r--r-- | src/com/android/launcher3/HolographicOutlineHelper.java | 110 |
1 files changed, 48 insertions, 62 deletions
diff --git a/src/com/android/launcher3/HolographicOutlineHelper.java b/src/com/android/launcher3/HolographicOutlineHelper.java index b1e0e68a4..5ff85d664 100644 --- a/src/com/android/launcher3/HolographicOutlineHelper.java +++ b/src/com/android/launcher3/HolographicOutlineHelper.java @@ -17,6 +17,7 @@ package com.android.launcher3; import android.content.Context; +import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BlurMaskFilter; import android.graphics.Canvas; @@ -25,11 +26,16 @@ import android.graphics.Paint; import android.graphics.PorterDuff; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; -import android.graphics.Region.Op; +import android.graphics.drawable.Drawable; +import android.util.SparseArray; +/** + * Utility class to generate shadow and outline effect, which are used for click feedback + * and drag-n-drop respectively. + */ public class HolographicOutlineHelper { - private static final Rect sTempRect = new Rect(); + private static HolographicOutlineHelper sInstance; private final Canvas mCanvas = new Canvas(); private final Paint mDrawPaint = new Paint(); @@ -40,26 +46,23 @@ public class HolographicOutlineHelper { private final BlurMaskFilter mThinOuterBlurMaskFilter; private final BlurMaskFilter mMediumInnerBlurMaskFilter; - private final BlurMaskFilter mShaowBlurMaskFilter; - private final int mShadowOffset; - - /** - * Padding used when creating shadow bitmap; - */ - final int shadowBitmapPadding; + private final BlurMaskFilter mShadowBlurMaskFilter; - static HolographicOutlineHelper INSTANCE; + // We have 4 different icon sizes: homescreen, hotseat, folder & all-apps + private final SparseArray<Bitmap> mBitmapCache = new SparseArray<>(4); private HolographicOutlineHelper(Context context) { - final float scale = LauncherAppState.getInstance().getScreenDensity(); + Resources res = context.getResources(); + + float mediumBlur = res.getDimension(R.dimen.blur_size_medium_outline); + mMediumOuterBlurMaskFilter = new BlurMaskFilter(mediumBlur, BlurMaskFilter.Blur.OUTER); + mMediumInnerBlurMaskFilter = new BlurMaskFilter(mediumBlur, BlurMaskFilter.Blur.NORMAL); - mMediumOuterBlurMaskFilter = new BlurMaskFilter(scale * 2.0f, BlurMaskFilter.Blur.OUTER); - mThinOuterBlurMaskFilter = new BlurMaskFilter(scale * 1.0f, BlurMaskFilter.Blur.OUTER); - mMediumInnerBlurMaskFilter = new BlurMaskFilter(scale * 2.0f, BlurMaskFilter.Blur.NORMAL); + mThinOuterBlurMaskFilter = new BlurMaskFilter( + res.getDimension(R.dimen.blur_size_thin_outline), BlurMaskFilter.Blur.OUTER); - mShaowBlurMaskFilter = new BlurMaskFilter(scale * 4.0f, BlurMaskFilter.Blur.NORMAL); - mShadowOffset = (int) (scale * 2.0f); - shadowBitmapPadding = (int) (scale * 4.0f); + mShadowBlurMaskFilter = new BlurMaskFilter( + res.getDimension(R.dimen.blur_size_click_shadow), BlurMaskFilter.Blur.NORMAL); mDrawPaint.setFilterBitmap(true); mDrawPaint.setAntiAlias(true); @@ -71,10 +74,10 @@ public class HolographicOutlineHelper { } public static HolographicOutlineHelper obtain(Context context) { - if (INSTANCE == null) { - INSTANCE = new HolographicOutlineHelper(context); + if (sInstance == null) { + sInstance = new HolographicOutlineHelper(context); } - return INSTANCE; + return sInstance; } /** @@ -153,51 +156,34 @@ public class HolographicOutlineHelper { } Bitmap createMediumDropShadow(BubbleTextView view) { - final Bitmap result = Bitmap.createBitmap( - view.getWidth() + shadowBitmapPadding + shadowBitmapPadding, - view.getHeight() + shadowBitmapPadding + shadowBitmapPadding + mShadowOffset, - Bitmap.Config.ARGB_8888); - - mCanvas.setBitmap(result); - - final Rect clipRect = sTempRect; - view.getDrawingRect(sTempRect); - // adjust the clip rect so that we don't include the text label - clipRect.bottom = view.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V - + view.getLayout().getLineTop(0); - - // Draw the View into the bitmap. - // The translate of scrollX and scrollY is necessary when drawing TextViews, because - // they set scrollX and scrollY to large values to achieve centered text - mCanvas.save(); - mCanvas.scale(view.getScaleX(), view.getScaleY(), - view.getWidth() / 2 + shadowBitmapPadding, - view.getHeight() / 2 + shadowBitmapPadding); - mCanvas.translate(-view.getScrollX() + shadowBitmapPadding, - -view.getScrollY() + shadowBitmapPadding); - mCanvas.clipRect(clipRect, Op.REPLACE); - view.draw(mCanvas); - mCanvas.restore(); - - int[] blurOffst = new int[2]; - mBlurPaint.setMaskFilter(mShaowBlurMaskFilter); - Bitmap blurBitmap = result.extractAlpha(mBlurPaint, blurOffst); - - mCanvas.save(); - mCanvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); - mCanvas.translate(blurOffst[0], blurOffst[1]); - - mDrawPaint.setColor(Color.BLACK); - mDrawPaint.setAlpha(30); - mCanvas.drawBitmap(blurBitmap, 0, 0, mDrawPaint); + Drawable icon = view.getIcon(); + if (icon == null) { + return null; + } + Rect rect = icon.getBounds(); + + int bitmapWidth = (int) (rect.width() * view.getScaleX()); + int bitmapHeight = (int) (rect.height() * view.getScaleY()); + + int key = (bitmapWidth << 16) | bitmapHeight; + Bitmap cache = mBitmapCache.get(key); + if (cache == null) { + cache = Bitmap.createBitmap(bitmapWidth, bitmapHeight, Bitmap.Config.ARGB_8888); + mCanvas.setBitmap(cache); + mBitmapCache.put(key, cache); + } else { + mCanvas.setBitmap(cache); + mCanvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); + } - mDrawPaint.setAlpha(60); - mCanvas.drawBitmap(blurBitmap, 0, mShadowOffset, mDrawPaint); + mCanvas.save(Canvas.MATRIX_SAVE_FLAG); + mCanvas.scale(view.getScaleX(), view.getScaleY()); + mCanvas.translate(-rect.left, -rect.top); + icon.draw(mCanvas); mCanvas.restore(); - mCanvas.setBitmap(null); - blurBitmap.recycle(); - return result; + mBlurPaint.setMaskFilter(mShadowBlurMaskFilter); + return cache.extractAlpha(mBlurPaint, null); } } |