[Contextual Search] Add support for crushed sprites and animate the search provider icon

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchIconSpriteControl.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchIconSpriteControl.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchIconSpriteControl.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchIconSpriteControl.java
new file mode 100644
index 0000000000000000000000000000000000000000..62ce574a84062d791775b2cb22c7b165b5dbefeb
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchIconSpriteControl.java
@@ -0,0 +1,135 @@
+// 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.compositor.bottombar.contextualsearch;
+
+import android.content.Context;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.compositor.layouts.ChromeAnimation;
+
+/**
+ * Controls the search provider icon sprite.
+ */
+public class ContextualSearchIconSpriteControl implements
+        ChromeAnimation.Animatable<ContextualSearchIconSpriteControl.AnimationType> {
+
+    /**
+     * Animation properties.
+     */
+    protected enum AnimationType {
+        APPEARANCE
+    }
+
+    /**
+     * Whether the search provider icon sprite is visible.
+     */
+    private boolean mIsVisible;
+
+    /**
+     * Whether the appearance of the search provider icon sprite should be animated.
+     */
+    private boolean mShouldAnimateAppearance;
+
+    /**
+     * The completion percentage for the animation; used to calculate which sprite frame to display.
+     */
+    private float mCompletionPercentage;
+
+    /**
+     * The size to use for display of the search provider icon sprite in px.
+     */
+    private float mSize;

[pedro (no code reviews), 2015/10/29 17:01:42]

nit: For consistency, rename this to mSizePx. Currently, we assume in
ContextualSearch that all measurements are in dp, and we include Px at the end
of members to indicate a different unit is being used.

[Theresa, 2015/10/29 17:44:09]

Done.

+
+    /**
+     * The panel delegate.

[pedro (no code reviews), 2015/10/29 17:01:42]

nit: Remove "delegate". We're now using the full panel.

[Theresa, 2015/10/29 17:44:09]

Done.

+     */
+    private ContextualSearchPanel mPanel;
+
+
+    /**
+     * @param panel The panel delegate.
+     * @param context The Android Context used to retrieve resources.
+     */
+    public ContextualSearchIconSpriteControl(
+            ContextualSearchPanel panel, Context context) {
+        mSize = context.getResources().getDimension(R.dimen.contextual_search_sprite_size);
+        mPanel = panel;
+    }
+
+    /**
+     * @return Whether the search provider icon sprite is visible.
+     */
+    public boolean isVisible() {
+        return mIsVisible;
+    }
+
+    /**
+     * @param isVisible Whether the search provider icon sprite should be visible.
+     */
+    public void setIsVisible(boolean isVisible) {
+        mIsVisible = isVisible;
+    }
+
+    /**
+     * @return The completion percentage for the animation; used to calculate which sprite frame
+     *         to display.
+     */
+    public float getCompletionPercentage() {
+        return mCompletionPercentage;
+    }
+
+    /**
+     * @return The size to use for display of the search provider icon sprite in px.
+     */
+    public float getSize() {

[pedro (no code reviews), 2015/10/29 17:01:42]

nit: Similarly, call this getSizePx()

[Theresa, 2015/10/29 17:44:09]

Done.

+        return mSize;
+    }
+
+    /**
+     * @return Whether the appearance of the search provider icon sprite should be animated.
+     */
+    public boolean shouldAnimateAppearance() {
+        return mShouldAnimateAppearance;
+    }
+
+    /**
+     * @param shouldAnimateAppearance Whether the appearance of the search provider icon sprite
+     * should be animated.
+     */
+    public void setShouldAnimateAppearance(boolean shouldAnimateAppearance) {
+        if (shouldAnimateAppearance) {
+            // The search provider icon sprite should be hidden until the animation starts.
+            mIsVisible = false;
+            mCompletionPercentage = 0.f;
+        } else {
+            mIsVisible = true;
+            mCompletionPercentage = 1.f;
+        }
+        mShouldAnimateAppearance = shouldAnimateAppearance;
+    }
+
+     // ============================================================================================
+     // Search Provider Icon Sprite Appearance Animation
+     // ============================================================================================
+
+    /**
+     * Animates the appearance of the search provider icon sprite. This should be called after the
+     * panel open animation has finished.
+     */
+    public void animateApperance() {
+        // The search provider icon sprite should be visible once the animation starts.
+        mIsVisible = true;
+        mPanel.addToAnimation(this, AnimationType.APPEARANCE, 0.f, 1.f,
+                ContextualSearchPanelAnimation.MAXIMUM_ANIMATION_DURATION_MS, 0);
+    }
+
+    @Override
+    public void setProperty(AnimationType type, float value) {
+        if (type == AnimationType.APPEARANCE) {
+            mCompletionPercentage = value;
+        }
+    }
+
+}