Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/widget/ReaderModeControl.java

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.widget;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewParent;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.ui.resources.dynamics.ViewResourceAdapter;
+
+/**
+ * Root ControlContainer for the Reader Mode panel.
+ * Handles user interaction with the Reader Mode control.
+ * See {@link ContextualSearchControl} for inspiration, based on ToolbarControlContainer.
+ */
+public class ReaderModeControl extends LinearLayout {
+    private ViewResourceAdapter mResourceAdapter;
+    private TextView mReaderViewText;
+    private boolean mIsDirty = false;
+
+    /**
+     * Constructs a new control container.
+     * <p>
+     * This constructor is used when inflating from XML.
+     *
+     * @param context The context used to build this view.
+     * @param attrs The attributes used to determine how to construct this view.
+     */
+    public ReaderModeControl(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    /**
+     * @return The {@link ViewResourceAdapter} that exposes this {@link View} as a CC resource.
+     */
+    public ViewResourceAdapter getResourceAdapter() {
+        return mResourceAdapter;
+    }
+
+    @Override
+    public void onFinishInflate() {
+        super.onFinishInflate();
+
+        mReaderViewText = (TextView) findViewById(R.id.main_text);
+        mResourceAdapter = new ViewResourceAdapter(findViewById(R.id.reader_mode_view));
+        mIsDirty = true;
+    }
+
+    @Override
+    public ViewParent invalidateChildInParent(int[] location, Rect dirty) {
+        ViewParent parent = super.invalidateChildInParent(location, dirty);
+        // TODO(pedrosimonetti): ViewGroup#invalidateChildInParent() is being called multiple
+        // times with different rectangles (for each of the individual repaints it seems). This
+        // means in order to invalidate it only once we need to keep track of the dirty state,
+        // and call ViewResourceAdapter#invalidate() only once per change of state, passing
+        // "null" to indicate that the whole area should be invalidated. This can be deleted
+        // if we stop relying on an Android View to render our Search Bar Text.
+        if (mIsDirty && mResourceAdapter != null) {
+            mIsDirty = false;
+            mResourceAdapter.invalidate(null);
+        }
+        return parent;
+    }
+
+    /**
+     * Sets the reader mode text to display in the control.
+     */
+    public void setReaderModeText() {
+        mReaderViewText.setText(R.string.reader_view_text);
+        mIsDirty = true;
+    }
+
+    /**
+     * @param X X-coordinate in dp
+     * @param Y Y-coordinate in dp
+     * @return Whether a given coordinates are within the bounds of the "dismiss" button
+     */
+    public boolean isInsideDismissButton(float x, float y) {
+        View view = findViewById(R.id.main_close);
+        final int left = (int) (view.getLeft() + view.getTranslationX());
+        final int top = (int) (view.getTop() + view.getTranslationY());
+        final int right = left + view.getWidth();
+        final int bottom = top + view.getHeight();
+        final int ix = (int) x;
+        final int iy = (int) y;
+        return ix >= left && ix < right && iy >= top && iy < bottom;
+    }
+}