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Diffstat (limited to 'src/com/android/launcher3/ButtonDropTarget.java')
-rw-r--r-- | src/com/android/launcher3/ButtonDropTarget.java | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/com/android/launcher3/ButtonDropTarget.java b/src/com/android/launcher3/ButtonDropTarget.java new file mode 100644 index 000000000..a7486a8e3 --- /dev/null +++ b/src/com/android/launcher3/ButtonDropTarget.java @@ -0,0 +1,166 @@ +/* + * 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.launcher3; + +import android.content.Context; +import android.content.res.Resources; +import android.graphics.PointF; +import android.graphics.Rect; +import android.graphics.drawable.Drawable; +import android.util.AttributeSet; +import android.view.View; +import android.widget.TextView; + +import com.android.launcher3.R; + + +/** + * Implements a DropTarget. + */ +public class ButtonDropTarget extends TextView implements DropTarget, DragController.DragListener { + + protected final int mTransitionDuration; + + protected Launcher mLauncher; + private int mBottomDragPadding; + protected TextView mText; + protected SearchDropTargetBar mSearchDropTargetBar; + + /** Whether this drop target is active for the current drag */ + protected boolean mActive; + + /** The paint applied to the drag view on hover */ + protected int mHoverColor = 0; + + public ButtonDropTarget(Context context, AttributeSet attrs) { + this(context, attrs, 0); + } + + public ButtonDropTarget(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + + Resources r = getResources(); + mTransitionDuration = r.getInteger(R.integer.config_dropTargetBgTransitionDuration); + mBottomDragPadding = r.getDimensionPixelSize(R.dimen.drop_target_drag_padding); + } + + void setLauncher(Launcher launcher) { + mLauncher = launcher; + } + + public boolean acceptDrop(DragObject d) { + return false; + } + + public void setSearchDropTargetBar(SearchDropTargetBar searchDropTargetBar) { + mSearchDropTargetBar = searchDropTargetBar; + } + + protected Drawable getCurrentDrawable() { + Drawable[] drawables = getCompoundDrawablesRelative(); + for (int i = 0; i < drawables.length; ++i) { + if (drawables[i] != null) { + return drawables[i]; + } + } + return null; + } + + public void onDrop(DragObject d) { + } + + public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { + // Do nothing + } + + public void onDragEnter(DragObject d) { + d.dragView.setColor(mHoverColor); + } + + public void onDragOver(DragObject d) { + // Do nothing + } + + public void onDragExit(DragObject d) { + d.dragView.setColor(0); + } + + public void onDragStart(DragSource source, Object info, int dragAction) { + // Do nothing + } + + public boolean isDropEnabled() { + return mActive; + } + + public void onDragEnd() { + // Do nothing + } + + @Override + public void getHitRect(android.graphics.Rect outRect) { + super.getHitRect(outRect); + outRect.bottom += mBottomDragPadding; + } + + private boolean isRtl() { + return (getLayoutDirection() == View.LAYOUT_DIRECTION_RTL); + } + + Rect getIconRect(int viewWidth, int viewHeight, int drawableWidth, int drawableHeight) { + DragLayer dragLayer = mLauncher.getDragLayer(); + + // Find the rect to animate to (the view is center aligned) + Rect to = new Rect(); + dragLayer.getViewRectRelativeToSelf(this, to); + + final int width = drawableWidth; + final int height = drawableHeight; + + final int left; + final int right; + + if (isRtl()) { + right = to.right - getPaddingRight(); + left = right - width; + } else { + left = to.left + getPaddingLeft(); + right = left + width; + } + + final int top = to.top + (getMeasuredHeight() - height) / 2; + final int bottom = top + height; + + to.set(left, top, right, bottom); + + // Center the destination rect about the trash icon + final int xOffset = (int) -(viewWidth - width) / 2; + final int yOffset = (int) -(viewHeight - height) / 2; + to.offset(xOffset, yOffset); + + return to; + } + + @Override + public DropTarget getDropTargetDelegate(DragObject d) { + return null; + } + + public void getLocationInDragLayer(int[] loc) { + mLauncher.getDragLayer().getLocationInDragLayer(this, loc); + } +} |