Launcher2 is now Launcher3.

Changes include
  - moving from com.android.launcher{,2} to
    com.android.launcher3
  - removing wallpapers
  - new temporary icon

Change-Id: I1eabd06059e94a8f3bdf6b620777bd1d2b7c212b
diff --git a/src/com/android/launcher3/Cling.java b/src/com/android/launcher3/Cling.java
new file mode 100644
index 0000000..6bb183c
--- /dev/null
+++ b/src/com/android/launcher3/Cling.java
@@ -0,0 +1,271 @@
+/*
+ * Copyright (C) 2011 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.content.res.TypedArray;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.util.DisplayMetrics;
+import android.view.FocusFinder;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.FrameLayout;
+
+import com.android.launcher3.R;
+
+public class Cling extends FrameLayout {
+
+    static final String WORKSPACE_CLING_DISMISSED_KEY = "cling.workspace.dismissed";
+    static final String ALLAPPS_CLING_DISMISSED_KEY = "cling.allapps.dismissed";
+    static final String FOLDER_CLING_DISMISSED_KEY = "cling.folder.dismissed";
+
+    private static String WORKSPACE_PORTRAIT = "workspace_portrait";
+    private static String WORKSPACE_LANDSCAPE = "workspace_landscape";
+    private static String WORKSPACE_LARGE = "workspace_large";
+    private static String WORKSPACE_CUSTOM = "workspace_custom";
+
+    private static String ALLAPPS_PORTRAIT = "all_apps_portrait";
+    private static String ALLAPPS_LANDSCAPE = "all_apps_landscape";
+    private static String ALLAPPS_LARGE = "all_apps_large";
+
+    private static String FOLDER_PORTRAIT = "folder_portrait";
+    private static String FOLDER_LANDSCAPE = "folder_landscape";
+    private static String FOLDER_LARGE = "folder_large";
+
+    private Launcher mLauncher;
+    private boolean mIsInitialized;
+    private String mDrawIdentifier;
+    private Drawable mBackground;
+    private Drawable mPunchThroughGraphic;
+    private Drawable mHandTouchGraphic;
+    private int mPunchThroughGraphicCenterRadius;
+    private int mAppIconSize;
+    private int mButtonBarHeight;
+    private float mRevealRadius;
+    private int[] mPositionData;
+
+    private Paint mErasePaint;
+
+    public Cling(Context context) {
+        this(context, null, 0);
+    }
+
+    public Cling(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public Cling(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Cling, defStyle, 0);
+        mDrawIdentifier = a.getString(R.styleable.Cling_drawIdentifier);
+        a.recycle();
+
+        setClickable(true);
+    }
+
+    void init(Launcher l, int[] positionData) {
+        if (!mIsInitialized) {
+            mLauncher = l;
+            mPositionData = positionData;
+
+            Resources r = getContext().getResources();
+
+            mPunchThroughGraphic = r.getDrawable(R.drawable.cling);
+            mPunchThroughGraphicCenterRadius =
+                r.getDimensionPixelSize(R.dimen.clingPunchThroughGraphicCenterRadius);
+            mAppIconSize = r.getDimensionPixelSize(R.dimen.app_icon_size);
+            mRevealRadius = r.getDimensionPixelSize(R.dimen.reveal_radius) * 1f;
+            mButtonBarHeight = r.getDimensionPixelSize(R.dimen.button_bar_height);
+
+            mErasePaint = new Paint();
+            mErasePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.MULTIPLY));
+            mErasePaint.setColor(0xFFFFFF);
+            mErasePaint.setAlpha(0);
+
+            mIsInitialized = true;
+        }
+    }
+
+    void cleanup() {
+        mBackground = null;
+        mPunchThroughGraphic = null;
+        mHandTouchGraphic = null;
+        mIsInitialized = false;
+    }
+
+    public String getDrawIdentifier() {
+        return mDrawIdentifier;
+    }
+
+    private int[] getPunchThroughPositions() {
+        if (mDrawIdentifier.equals(WORKSPACE_PORTRAIT)) {
+            return new int[]{getMeasuredWidth() / 2, getMeasuredHeight() - (mButtonBarHeight / 2)};
+        } else if (mDrawIdentifier.equals(WORKSPACE_LANDSCAPE)) {
+            return new int[]{getMeasuredWidth() - (mButtonBarHeight / 2), getMeasuredHeight() / 2};
+        } else if (mDrawIdentifier.equals(WORKSPACE_LARGE)) {
+            final float scale = LauncherApplication.getScreenDensity();
+            final int cornerXOffset = (int) (scale * 15);
+            final int cornerYOffset = (int) (scale * 10);
+            return new int[]{getMeasuredWidth() - cornerXOffset, cornerYOffset};
+        } else if (mDrawIdentifier.equals(ALLAPPS_PORTRAIT) ||
+                   mDrawIdentifier.equals(ALLAPPS_LANDSCAPE) ||
+                   mDrawIdentifier.equals(ALLAPPS_LARGE)) {
+            return mPositionData;
+        }
+        return new int[]{-1, -1};
+    }
+
+    @Override
+    public View focusSearch(int direction) {
+        return this.focusSearch(this, direction);
+    }
+
+    @Override
+    public View focusSearch(View focused, int direction) {
+        return FocusFinder.getInstance().findNextFocus(this, focused, direction);
+    }
+
+    @Override
+    public boolean onHoverEvent(MotionEvent event) {
+        return (mDrawIdentifier.equals(WORKSPACE_PORTRAIT)
+                || mDrawIdentifier.equals(WORKSPACE_LANDSCAPE)
+                || mDrawIdentifier.equals(WORKSPACE_LARGE)
+                || mDrawIdentifier.equals(ALLAPPS_PORTRAIT)
+                || mDrawIdentifier.equals(ALLAPPS_LANDSCAPE)
+                || mDrawIdentifier.equals(ALLAPPS_LARGE)
+                || mDrawIdentifier.equals(WORKSPACE_CUSTOM));
+    }
+
+    @Override
+    public boolean onTouchEvent(android.view.MotionEvent event) {
+        if (mDrawIdentifier.equals(WORKSPACE_PORTRAIT) ||
+            mDrawIdentifier.equals(WORKSPACE_LANDSCAPE) ||
+            mDrawIdentifier.equals(WORKSPACE_LARGE) ||
+            mDrawIdentifier.equals(ALLAPPS_PORTRAIT) ||
+            mDrawIdentifier.equals(ALLAPPS_LANDSCAPE) ||
+            mDrawIdentifier.equals(ALLAPPS_LARGE)) {
+
+            int[] positions = getPunchThroughPositions();
+            for (int i = 0; i < positions.length; i += 2) {
+                double diff = Math.sqrt(Math.pow(event.getX() - positions[i], 2) +
+                        Math.pow(event.getY() - positions[i + 1], 2));
+                if (diff < mRevealRadius) {
+                    return false;
+                }
+            }
+        } else if (mDrawIdentifier.equals(FOLDER_PORTRAIT) ||
+                   mDrawIdentifier.equals(FOLDER_LANDSCAPE) ||
+                   mDrawIdentifier.equals(FOLDER_LARGE)) {
+            Folder f = mLauncher.getWorkspace().getOpenFolder();
+            if (f != null) {
+                Rect r = new Rect();
+                f.getHitRect(r);
+                if (r.contains((int) event.getX(), (int) event.getY())) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    };
+
+    @Override
+    protected void dispatchDraw(Canvas canvas) {
+        if (mIsInitialized) {
+            DisplayMetrics metrics = new DisplayMetrics();
+            mLauncher.getWindowManager().getDefaultDisplay().getMetrics(metrics);
+
+            // Initialize the draw buffer (to allow punching through)
+            Bitmap b = Bitmap.createBitmap(getMeasuredWidth(), getMeasuredHeight(),
+                    Bitmap.Config.ARGB_8888);
+            Canvas c = new Canvas(b);
+
+            // Draw the background
+            if (mBackground == null) {
+                if (mDrawIdentifier.equals(WORKSPACE_PORTRAIT) ||
+                        mDrawIdentifier.equals(WORKSPACE_LANDSCAPE) ||
+                        mDrawIdentifier.equals(WORKSPACE_LARGE)) {
+                    mBackground = getResources().getDrawable(R.drawable.bg_cling1);
+                } else if (mDrawIdentifier.equals(ALLAPPS_PORTRAIT) ||
+                        mDrawIdentifier.equals(ALLAPPS_LANDSCAPE) ||
+                        mDrawIdentifier.equals(ALLAPPS_LARGE)) {
+                    mBackground = getResources().getDrawable(R.drawable.bg_cling2);
+                } else if (mDrawIdentifier.equals(FOLDER_PORTRAIT) ||
+                        mDrawIdentifier.equals(FOLDER_LANDSCAPE)) {
+                    mBackground = getResources().getDrawable(R.drawable.bg_cling3);
+                } else if (mDrawIdentifier.equals(FOLDER_LARGE)) {
+                    mBackground = getResources().getDrawable(R.drawable.bg_cling4);
+                } else if (mDrawIdentifier.equals(WORKSPACE_CUSTOM)) {
+                    mBackground = getResources().getDrawable(R.drawable.bg_cling5);
+                }
+            }
+            if (mBackground != null) {
+                mBackground.setBounds(0, 0, getMeasuredWidth(), getMeasuredHeight());
+                mBackground.draw(c);
+            } else {
+                c.drawColor(0x99000000);
+            }
+
+            int cx = -1;
+            int cy = -1;
+            float scale = mRevealRadius / mPunchThroughGraphicCenterRadius;
+            int dw = (int) (scale * mPunchThroughGraphic.getIntrinsicWidth());
+            int dh = (int) (scale * mPunchThroughGraphic.getIntrinsicHeight());
+
+            // Determine where to draw the punch through graphic
+            int[] positions = getPunchThroughPositions();
+            for (int i = 0; i < positions.length; i += 2) {
+                cx = positions[i];
+                cy = positions[i + 1];
+                if (cx > -1 && cy > -1) {
+                    c.drawCircle(cx, cy, mRevealRadius, mErasePaint);
+                    mPunchThroughGraphic.setBounds(cx - dw/2, cy - dh/2, cx + dw/2, cy + dh/2);
+                    mPunchThroughGraphic.draw(c);
+                }
+            }
+
+            // Draw the hand graphic in All Apps
+            if (mDrawIdentifier.equals(ALLAPPS_PORTRAIT) ||
+                mDrawIdentifier.equals(ALLAPPS_LANDSCAPE) ||
+                mDrawIdentifier.equals(ALLAPPS_LARGE)) {
+                if (mHandTouchGraphic == null) {
+                    mHandTouchGraphic = getResources().getDrawable(R.drawable.hand);
+                }
+                int offset = mAppIconSize / 4;
+                mHandTouchGraphic.setBounds(cx + offset, cy + offset,
+                        cx + mHandTouchGraphic.getIntrinsicWidth() + offset,
+                        cy + mHandTouchGraphic.getIntrinsicHeight() + offset);
+                mHandTouchGraphic.draw(c);
+            }
+
+            canvas.drawBitmap(b, 0, 0, null);
+            c.setBitmap(null);
+            b = null;
+        }
+
+        // Draw the rest of the cling
+        super.dispatchDraw(canvas);
+    };
+}