Add welcome screen to setup wizard

This is a preliminary implementation because the welcome screen video
is just a placeholder.

Bug: 8159728
Change-Id: I6a2459a266babec2f078fc393b18c77b0b7992a8

1 files changed, 108 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/setup/SetupStartIndicatorView.java b/java/src/com/android/inputmethod/latin/setup/SetupStartIndicatorView.java
new file mode 100644
index 000000000..ca974f6b8
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/setup/SetupStartIndicatorView.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2013 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.inputmethod.latin.setup;
+
+import android.content.Context;
+import android.content.res.ColorStateList;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import com.android.inputmethod.compat.ViewCompatUtils;
+import com.android.inputmethod.latin.R;
+
+public final class SetupStartIndicatorView extends LinearLayout {
+    public SetupStartIndicatorView(final Context context, final AttributeSet attrs) {
+        super(context, attrs);
+        setOrientation(HORIZONTAL);
+        LayoutInflater.from(context).inflate(R.layout.setup_start_indicator_label, this);
+
+        final LabelView labelView = (LabelView)findViewById(R.id.setup_start_label);
+        labelView.setIndicatorView(findViewById(R.id.setup_start_indicator));
+    }
+
+    public static final class LabelView extends TextView {
+        private View mIndicatorView;
+
+        public LabelView(final Context context, final AttributeSet attrs) {
+            super(context, attrs);
+        }
+
+        public void setIndicatorView(final View indicatorView) {
+            mIndicatorView = indicatorView;
+        }
+
+        @Override
+        public void setPressed(final boolean pressed) {
+            super.setPressed(pressed);
+            if (mIndicatorView != null) {
+                mIndicatorView.setPressed(pressed);
+            }
+        }
+    }
+
+    public static final class IndicatorView extends View {
+        private final Path mIndicatorPath = new Path();
+        private final Paint mIndicatorPaint = new Paint();
+        private final ColorStateList mIndicatorColor;
+
+        public IndicatorView(final Context context, final AttributeSet attrs) {
+            super(context, attrs);
+            mIndicatorColor = getResources().getColorStateList(
+                    R.color.setup_step_action_background);
+            mIndicatorPaint.setStyle(Paint.Style.FILL);
+        }
+
+        @Override
+        public void setPressed(final boolean pressed) {
+            super.setPressed(pressed);
+            invalidate();
+        }
+
+        @Override
+        protected void onDraw(final Canvas canvas) {
+            super.onDraw(canvas);
+            final int layoutDirection = ViewCompatUtils.getLayoutDirection(this);
+            final int width = getWidth();
+            final int height = getHeight();
+            final float halfHeight = height / 2.0f;
+            final Path path = mIndicatorPath;
+            path.rewind();
+            if (layoutDirection == ViewCompatUtils.LAYOUT_DIRECTION_RTL) {
+                // Left arrow
+                path.moveTo(width, 0.0f);
+                path.lineTo(0.0f, halfHeight);
+                path.lineTo(width, height);
+            } else { // LAYOUT_DIRECTION_LTR
+                // Right arrow
+                path.moveTo(0.0f, 0.0f);
+                path.lineTo(width, halfHeight);
+                path.lineTo(0.0f, height);
+            }
+            path.close();
+            final int[] stateSet = getDrawableState();
+            final int color = mIndicatorColor.getColorForState(stateSet, 0);
+            mIndicatorPaint.setColor(color);
+            canvas.drawPath(path, mIndicatorPaint);
+        }
+    }
+}