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Diffstat (limited to 'src/com/android/launcher/DeleteZone.java')
| -rw-r--r-- | src/com/android/launcher/DeleteZone.java | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/src/com/android/launcher/DeleteZone.java b/src/com/android/launcher/DeleteZone.java new file mode 100644 index 000000000..f31a206c5 --- /dev/null +++ b/src/com/android/launcher/DeleteZone.java @@ -0,0 +1,260 @@ +/* + * Copyright (C) 2008 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.launcher; + +import android.widget.ImageView; +import android.content.Context; +import android.content.res.TypedArray; +import android.util.AttributeSet; +import android.view.View; +import android.view.animation.TranslateAnimation; +import android.view.animation.Animation; +import android.view.animation.AnimationSet; +import android.view.animation.AccelerateInterpolator; +import android.view.animation.AlphaAnimation; +import android.graphics.RectF; +import android.graphics.drawable.TransitionDrawable; + +public class DeleteZone extends ImageView implements DropTarget, DragController.DragListener { + private static final int ORIENTATION_HORIZONTAL = 1; + private static final int TRANSITION_DURATION = 250; + private static final int ANIMATION_DURATION = 200; + + private final int[] mLocation = new int[2]; + + private Launcher mLauncher; + private boolean mTrashMode; + + private AnimationSet mInAnimation; + private AnimationSet mOutAnimation; + private Animation mHandleInAnimation; + private Animation mHandleOutAnimation; + + private int mOrientation; + private DragLayer mDragLayer; + + private final RectF mRegion = new RectF(); + private TransitionDrawable mTransition; + private View mHandle; + + public DeleteZone(Context context) { + super(context); + } + + public DeleteZone(Context context, AttributeSet attrs) { + this(context, attrs, 0); + } + + public DeleteZone(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + + TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DeleteZone, defStyle, 0); + mOrientation = a.getInt(R.styleable.DeleteZone_direction, ORIENTATION_HORIZONTAL); + a.recycle(); + } + + @Override + protected void onFinishInflate() { + super.onFinishInflate(); + mTransition = (TransitionDrawable) getBackground(); + } + + public boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset, + Object dragInfo) { + return true; + } + + public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, Object dragInfo) { + final ItemInfo item = (ItemInfo) dragInfo; + + if (item.container == -1) return; + + final LauncherModel model = Launcher.getModel(); + if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { + if (item instanceof LauncherGadgetInfo) { + model.removeDesktopGadget((LauncherGadgetInfo) item); + } else { + model.removeDesktopItem(item); + } + } else { + if (source instanceof UserFolder) { + final UserFolder userFolder = (UserFolder) source; + final UserFolderInfo userFolderInfo = (UserFolderInfo) userFolder.getInfo(); + model.removeUserFolderItem(userFolderInfo, item); + } + } + if (item instanceof UserFolderInfo) { + final UserFolderInfo userFolderInfo = (UserFolderInfo)item; + LauncherModel.deleteUserFolderContentsFromDatabase(mLauncher, userFolderInfo); + model.removeUserFolder(userFolderInfo); + } else if (item instanceof LauncherGadgetInfo) { + final LauncherGadgetInfo launcherGadgetInfo = (LauncherGadgetInfo)item; + final LauncherGadgetHost gadgetHost = mLauncher.getGadgetHost(); + if (gadgetHost != null) { + gadgetHost.deleteGadgetId(launcherGadgetInfo.gadgetId); + } + } + LauncherModel.deleteItemFromDatabase(mLauncher, item); + } + + public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset, + Object dragInfo) { + mTransition.reverseTransition(TRANSITION_DURATION); + } + + public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, + Object dragInfo) { + } + + public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset, + Object dragInfo) { + mTransition.reverseTransition(TRANSITION_DURATION); + } + + public void onDragStart(View v, DragSource source, Object info, int dragAction) { + final ItemInfo item = (ItemInfo) info; + if (item != null) { + mTrashMode = true; + createAnimations(); + final int[] location = mLocation; + getLocationOnScreen(location); + mRegion.set(location[0], location[1], location[0] + mRight - mLeft, + location[1] + mBottom - mTop); + mDragLayer.setDeleteRegion(mRegion); + mTransition.resetTransition(); + startAnimation(mInAnimation); + mHandle.startAnimation(mHandleOutAnimation); + setVisibility(VISIBLE); + } + } + + public void onDragEnd() { + if (mTrashMode) { + mTrashMode = false; + mDragLayer.setDeleteRegion(null); + startAnimation(mOutAnimation); + mHandle.startAnimation(mHandleInAnimation); + setVisibility(GONE); + } + } + + private void createAnimations() { + if (mInAnimation == null) { + mInAnimation = new FastAnimationSet(); + final AnimationSet animationSet = mInAnimation; + animationSet.setInterpolator(new AccelerateInterpolator()); + animationSet.addAnimation(new AlphaAnimation(0.0f, 1.0f)); + if (mOrientation == ORIENTATION_HORIZONTAL) { + animationSet.addAnimation(new TranslateAnimation(Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f, Animation.RELATIVE_TO_SELF, 1.0f, + Animation.RELATIVE_TO_SELF, 0.0f)); + } else { + animationSet.addAnimation(new TranslateAnimation(Animation.RELATIVE_TO_SELF, + 1.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f)); + } + animationSet.setDuration(ANIMATION_DURATION); + } + if (mHandleInAnimation == null) { + if (mOrientation == ORIENTATION_HORIZONTAL) { + mHandleInAnimation = new TranslateAnimation(Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f, Animation.RELATIVE_TO_SELF, 1.0f, + Animation.RELATIVE_TO_SELF, 0.0f); + } else { + mHandleInAnimation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, + 1.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f); + } + mHandleInAnimation.setDuration(ANIMATION_DURATION); + } + if (mOutAnimation == null) { + mOutAnimation = new FastAnimationSet(); + final AnimationSet animationSet = mOutAnimation; + animationSet.setInterpolator(new AccelerateInterpolator()); + animationSet.addAnimation(new AlphaAnimation(1.0f, 0.0f)); + if (mOrientation == ORIENTATION_HORIZONTAL) { + animationSet.addAnimation(new FastTranslateAnimation(Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f, + Animation.RELATIVE_TO_SELF, 1.0f)); + } else { + animationSet.addAnimation(new FastTranslateAnimation(Animation.RELATIVE_TO_SELF, + 0.0f, Animation.RELATIVE_TO_SELF, 1.0f, Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f)); + } + animationSet.setDuration(ANIMATION_DURATION); + } + if (mHandleOutAnimation == null) { + if (mOrientation == ORIENTATION_HORIZONTAL) { + mHandleOutAnimation = new FastTranslateAnimation(Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f, + Animation.RELATIVE_TO_SELF, 1.0f); + } else { + mHandleOutAnimation = new FastTranslateAnimation(Animation.RELATIVE_TO_SELF, + 0.0f, Animation.RELATIVE_TO_SELF, 1.0f, Animation.ABSOLUTE, 0.0f, + Animation.ABSOLUTE, 0.0f); + } + mHandleOutAnimation.setFillAfter(true); + mHandleOutAnimation.setDuration(ANIMATION_DURATION); + } + } + + void setLauncher(Launcher launcher) { + mLauncher = launcher; + } + + void setDragController(DragLayer dragLayer) { + mDragLayer = dragLayer; + } + + void setHandle(View view) { + mHandle = view; + } + + private static class FastTranslateAnimation extends TranslateAnimation { + public FastTranslateAnimation(int fromXType, float fromXValue, int toXType, float toXValue, + int fromYType, float fromYValue, int toYType, float toYValue) { + super(fromXType, fromXValue, toXType, toXValue, + fromYType, fromYValue, toYType, toYValue); + } + + @Override + public boolean willChangeTransformationMatrix() { + return true; + } + + @Override + public boolean willChangeBounds() { + return false; + } + } + + private static class FastAnimationSet extends AnimationSet { + FastAnimationSet() { + super(false); + } + + @Override + public boolean willChangeTransformationMatrix() { + return true; + } + + @Override + public boolean willChangeBounds() { + return false; + } + } +} |