| /* |
| * Copyright (C) 2010 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.launcher2; |
| |
| import android.animation.ObjectAnimator; |
| import android.appwidget.AppWidgetProviderInfo; |
| import android.content.Context; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.graphics.RectF; |
| import android.util.AttributeSet; |
| import android.view.KeyEvent; |
| import android.view.MotionEvent; |
| import android.widget.Checkable; |
| import android.widget.ImageView; |
| import android.widget.LinearLayout; |
| import android.widget.TextView; |
| |
| import com.android.launcher.R; |
| |
| /** |
| * The linear layout used strictly for the widget/wallpaper tab of the customization tray |
| */ |
| public class PagedViewWidget extends LinearLayout implements Checkable { |
| static final String TAG = "PagedViewWidgetLayout"; |
| |
| private static final int sPreviewFadeInDuration = 80; |
| private static final int sPreviewFadeInStaggerDuration = 20; |
| |
| private final Paint mPaint = new Paint(); |
| private Bitmap mHolographicOutline; |
| private HolographicOutlineHelper mHolographicOutlineHelper; |
| private ImageView mPreviewImageView; |
| private final RectF mTmpScaleRect = new RectF(); |
| |
| private String mDimensionsFormatString; |
| |
| private int mAlpha = 255; |
| private int mHolographicAlpha; |
| |
| private boolean mIsChecked; |
| private ObjectAnimator mCheckedAlphaAnimator; |
| private float mCheckedAlpha = 1.0f; |
| private int mCheckedFadeInDuration; |
| private int mCheckedFadeOutDuration; |
| |
| public PagedViewWidget(Context context) { |
| this(context, null); |
| } |
| |
| public PagedViewWidget(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public PagedViewWidget(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| // Set up fade in/out constants |
| final Resources r = context.getResources(); |
| final int alpha = r.getInteger(R.integer.config_dragAppsCustomizeIconFadeAlpha); |
| if (alpha > 0) { |
| mCheckedAlpha = r.getInteger(R.integer.config_dragAppsCustomizeIconFadeAlpha) / 256.0f; |
| mCheckedFadeInDuration = |
| r.getInteger(R.integer.config_dragAppsCustomizeIconFadeInDuration); |
| mCheckedFadeOutDuration = |
| r.getInteger(R.integer.config_dragAppsCustomizeIconFadeOutDuration); |
| } |
| mDimensionsFormatString = r.getString(R.string.widget_dims_format); |
| |
| setWillNotDraw(false); |
| setClipToPadding(false); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| |
| final ImageView image = (ImageView) findViewById(R.id.widget_preview); |
| if (image != null) { |
| FastBitmapDrawable preview = (FastBitmapDrawable) image.getDrawable(); |
| if (preview != null && preview.getBitmap() != null) { |
| preview.getBitmap().recycle(); |
| } |
| image.setImageDrawable(null); |
| } |
| } |
| |
| public void applyFromAppWidgetProviderInfo(AppWidgetProviderInfo info, |
| int maxWidth, int[] cellSpan, HolographicOutlineHelper holoOutlineHelper) { |
| mHolographicOutlineHelper = holoOutlineHelper; |
| final ImageView image = (ImageView) findViewById(R.id.widget_preview); |
| if (maxWidth > -1) { |
| image.setMaxWidth(maxWidth); |
| } |
| image.setContentDescription(info.label); |
| mPreviewImageView = image; |
| final TextView name = (TextView) findViewById(R.id.widget_name); |
| name.setText(info.label); |
| final TextView dims = (TextView) findViewById(R.id.widget_dims); |
| if (dims != null) { |
| dims.setText(String.format(mDimensionsFormatString, cellSpan[0], cellSpan[1])); |
| } |
| } |
| |
| public void applyFromResolveInfo(PackageManager pm, ResolveInfo info, |
| HolographicOutlineHelper holoOutlineHelper) { |
| mHolographicOutlineHelper = holoOutlineHelper; |
| CharSequence label = info.loadLabel(pm); |
| final ImageView image = (ImageView) findViewById(R.id.widget_preview); |
| image.setContentDescription(label); |
| mPreviewImageView = image; |
| final TextView name = (TextView) findViewById(R.id.widget_name); |
| name.setText(label); |
| final TextView dims = (TextView) findViewById(R.id.widget_dims); |
| if (dims != null) { |
| dims.setText(String.format(mDimensionsFormatString, 1, 1)); |
| } |
| } |
| |
| void applyPreview(FastBitmapDrawable preview, int index, boolean scale) { |
| final ImageView image = (ImageView) findViewById(R.id.widget_preview); |
| if (preview != null) { |
| image.setImageDrawable(preview); |
| image.setScaleType(scale ? ImageView.ScaleType.FIT_START : ImageView.ScaleType.MATRIX); |
| image.setAlpha(0f); |
| image.animate() |
| .alpha(1f) |
| .setDuration(sPreviewFadeInDuration + (index * sPreviewFadeInStaggerDuration)) |
| .start(); |
| } |
| } |
| |
| public void setHolographicOutline(Bitmap holoOutline) { |
| mHolographicOutline = holoOutline; |
| invalidate(); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| // We eat up the touch events here, since the PagedView (which uses the same swiping |
| // touch code as Workspace previously) uses onInterceptTouchEvent() to determine when |
| // the user is scrolling between pages. This means that if the pages themselves don't |
| // handle touch events, it gets forwarded up to PagedView itself, and it's own |
| // onTouchEvent() handling will prevent further intercept touch events from being called |
| // (it's the same view in that case). This is not ideal, but to prevent more changes, |
| // we just always mark the touch event as handled. |
| return super.onTouchEvent(event) || true; |
| } |
| |
| @Override |
| public boolean onKeyDown(int keyCode, KeyEvent event) { |
| return FocusHelper.handlePagedViewGridLayoutWidgetKeyEvent(this, keyCode, event) |
| || super.onKeyDown(keyCode, event); |
| } |
| |
| @Override |
| public boolean onKeyUp(int keyCode, KeyEvent event) { |
| return FocusHelper.handlePagedViewGridLayoutWidgetKeyEvent(this, keyCode, event) |
| || super.onKeyUp(keyCode, event); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| if (mAlpha > 0) { |
| super.onDraw(canvas); |
| } |
| |
| // draw any blended overlays |
| if (mHolographicOutline != null && mHolographicAlpha > 0) { |
| // Calculate how much to scale the holographic preview |
| mTmpScaleRect.set(0,0,1,1); |
| mPreviewImageView.getImageMatrix().mapRect(mTmpScaleRect); |
| |
| mPaint.setAlpha(mHolographicAlpha); |
| canvas.save(); |
| canvas.scale(mTmpScaleRect.right, mTmpScaleRect.bottom); |
| canvas.drawBitmap(mHolographicOutline, mPreviewImageView.getLeft(), |
| mPreviewImageView.getTop(), mPaint); |
| canvas.restore(); |
| } |
| } |
| |
| @Override |
| protected boolean onSetAlpha(int alpha) { |
| return true; |
| } |
| |
| private void setChildrenAlpha(float alpha) { |
| final int childCount = getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| getChildAt(i).setAlpha(alpha); |
| } |
| } |
| @Override |
| public void setAlpha(float alpha) { |
| final float viewAlpha = mHolographicOutlineHelper.viewAlphaInterpolator(alpha); |
| final float holographicAlpha = mHolographicOutlineHelper.highlightAlphaInterpolator(alpha); |
| int newViewAlpha = (int) (viewAlpha * 255); |
| int newHolographicAlpha = (int) (holographicAlpha * 255); |
| if ((mAlpha != newViewAlpha) || (mHolographicAlpha != newHolographicAlpha)) { |
| mAlpha = newViewAlpha; |
| mHolographicAlpha = newHolographicAlpha; |
| setChildrenAlpha(viewAlpha); |
| super.setAlpha(viewAlpha); |
| } |
| } |
| |
| void setChecked(boolean checked, boolean animate) { |
| if (mIsChecked != checked) { |
| mIsChecked = checked; |
| |
| float alpha; |
| int duration; |
| if (mIsChecked) { |
| alpha = mCheckedAlpha; |
| duration = mCheckedFadeInDuration; |
| } else { |
| alpha = 1.0f; |
| duration = mCheckedFadeOutDuration; |
| } |
| |
| // Initialize the animator |
| if (mCheckedAlphaAnimator != null) { |
| mCheckedAlphaAnimator.cancel(); |
| } |
| if (animate) { |
| mCheckedAlphaAnimator = ObjectAnimator.ofFloat(this, "alpha", getAlpha(), alpha); |
| mCheckedAlphaAnimator.setDuration(duration); |
| mCheckedAlphaAnimator.start(); |
| } else { |
| setAlpha(alpha); |
| } |
| |
| invalidate(); |
| } |
| } |
| |
| @Override |
| public void setChecked(boolean checked) { |
| setChecked(checked, true); |
| } |
| |
| @Override |
| public boolean isChecked() { |
| return mIsChecked; |
| } |
| |
| @Override |
| public void toggle() { |
| setChecked(!mIsChecked); |
| } |
| } |