Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/StackAnimationPortrait.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.compositor.layouts.phone.stack;
+
+import static org.chromium.chrome.browser.compositor.layouts.ChromeAnimation.AnimatableAnimation.addAnimation;
+import static org.chromium.chrome.browser.compositor.layouts.components.LayoutTab.Property.MAX_CONTENT_HEIGHT;
+import static org.chromium.chrome.browser.compositor.layouts.components.LayoutTab.Property.SATURATION;
+import static org.chromium.chrome.browser.compositor.layouts.components.LayoutTab.Property.SIDE_BORDER_SCALE;
+import static org.chromium.chrome.browser.compositor.layouts.components.LayoutTab.Property.TILTX;
+import static org.chromium.chrome.browser.compositor.layouts.components.LayoutTab.Property.TOOLBAR_ALPHA;
+import static org.chromium.chrome.browser.compositor.layouts.components.LayoutTab.Property.TOOLBAR_Y_OFFSET;
+import static org.chromium.chrome.browser.compositor.layouts.phone.stack.StackTab.Property.DISCARD_AMOUNT;
+import static org.chromium.chrome.browser.compositor.layouts.phone.stack.StackTab.Property.SCALE;
+import static org.chromium.chrome.browser.compositor.layouts.phone.stack.StackTab.Property.SCROLL_OFFSET;
+import static org.chromium.chrome.browser.compositor.layouts.phone.stack.StackTab.Property.Y_IN_STACK_INFLUENCE;
+import static org.chromium.chrome.browser.compositor.layouts.phone.stack.StackTab.Property.Y_IN_STACK_OFFSET;
+
+import org.chromium.chrome.browser.compositor.layouts.ChromeAnimation;
+import org.chromium.chrome.browser.compositor.layouts.ChromeAnimation.Animatable;
+import org.chromium.chrome.browser.compositor.layouts.components.LayoutTab;
+import org.chromium.chrome.browser.util.MathUtils;
+import org.chromium.ui.base.LocalizationUtils;
+
+class StackAnimationPortrait extends StackAnimation {
+    /**
+     * Only Constructor.
+     */
+    public StackAnimationPortrait(float width, float height, float heightMinusTopControls,
+            float borderFramePaddingTop, float borderFramePaddingTopOpaque,
+            float borderFramePaddingLeft) {
+        super(width, height, heightMinusTopControls, borderFramePaddingTop,
+                borderFramePaddingTopOpaque, borderFramePaddingLeft);
+    }
+
+    @Override
+    protected ChromeAnimation<?> createEnterStackAnimatorSet(
+            StackTab[] tabs, int focusIndex, int spacing, float warpSize) {
+        ChromeAnimation<Animatable<?>> set = new ChromeAnimation<Animatable<?>>();
+        final float initialScrollOffset = StackTab.screenToScroll(0, warpSize);
+
+        float trailingScrollOffset = 0.f;
+        if (focusIndex >= 0 && focusIndex < tabs.length - 1) {
+            final float focusOffset = tabs[focusIndex].getScrollOffset();
+            final float nextOffset = tabs[focusIndex + 1].getScrollOffset();
+            final float topSpacing = focusIndex == 0 ? spacing : 0.f;
+            final float extraSpace = tabs[focusIndex].getLayoutTab().getScaledContentHeight()
+                    * ENTER_STACK_SIZE_RATIO;
+            trailingScrollOffset = Math.max(focusOffset - nextOffset + topSpacing + extraSpace, 0);
+        }
+
+        for (int i = 0; i < tabs.length; ++i) {
+            StackTab tab = tabs[i];
+
+            tab.resetOffset();
+            tab.setScale(SCALE_AMOUNT);
+            tab.setAlpha(1.f);
+            tab.getLayoutTab().setToolbarAlpha(0.f);
+            tab.getLayoutTab().setBorderScale(1.f);
+
+            float scrollOffset = StackTab.screenToScroll(i * spacing, warpSize);
+
+            if (i < focusIndex) {
+                tab.getLayoutTab().setMaxContentHeight(mHeightMinusTopControls);
+                addAnimation(set, tab, SCROLL_OFFSET, initialScrollOffset, scrollOffset,
+                        ENTER_STACK_ANIMATION_DURATION, 0);
+            } else if (i > focusIndex) {
+                tab.getLayoutTab().setMaxContentHeight(mHeightMinusTopControls);
+                tab.setScrollOffset(scrollOffset + trailingScrollOffset);
+                addAnimation(
+                        set, tab, Y_IN_STACK_OFFSET, mHeight, 0, ENTER_STACK_ANIMATION_DURATION, 0);
+            } else {
+                tab.setScrollOffset(scrollOffset);
+
+                addAnimation(set, tab.getLayoutTab(), MAX_CONTENT_HEIGHT,
+                        tab.getLayoutTab().getUnclampedOriginalContentHeight(),
+                        mHeightMinusTopControls, ENTER_STACK_ANIMATION_DURATION,
+                        ENTER_STACK_RESIZE_DELAY);
+                addAnimation(set, tab, Y_IN_STACK_INFLUENCE, 0.0f, 1.0f,
+                        ENTER_STACK_BORDER_ALPHA_DURATION, 0);
+                addAnimation(
+                        set, tab, SCALE, 1.0f, SCALE_AMOUNT, ENTER_STACK_BORDER_ALPHA_DURATION, 0);
+                addAnimation(set, tab.getLayoutTab(), TOOLBAR_ALPHA, 1.f, 0.f,
+                        ENTER_STACK_BORDER_ALPHA_DURATION, ENTER_STACK_TOOLBAR_ALPHA_DELAY);
+                addAnimation(set, tab.getLayoutTab(), TOOLBAR_Y_OFFSET, 0.f,
+                        getToolbarOffsetToLineUpWithBorder(), ENTER_STACK_BORDER_ALPHA_DURATION,
+                        TAB_FOCUSED_TOOLBAR_ALPHA_DELAY);
+                addAnimation(set, tab.getLayoutTab(), SIDE_BORDER_SCALE, 0.f, 1.f,
+                        ENTER_STACK_BORDER_ALPHA_DURATION, TAB_FOCUSED_TOOLBAR_ALPHA_DELAY);
+
+                tab.setYOutOfStack(mHeight - mHeightMinusTopControls - mBorderTopHeight);
+            }
+        }
+
+        return set;
+    }
+
+    @Override
+    protected ChromeAnimation<?> createTabFocusedAnimatorSet(
+            StackTab[] tabs, int focusIndex, int spacing, float warpSize) {
+        ChromeAnimation<Animatable<?>> set = new ChromeAnimation<Animatable<?>>();
+        for (int i = 0; i < tabs.length; ++i) {
+            StackTab tab = tabs[i];
+            LayoutTab layoutTab = tab.getLayoutTab();
+
+            addTiltScrollAnimation(set, layoutTab, 0.0f, TAB_FOCUSED_ANIMATION_DURATION, 0);
+            addAnimation(set, tab, DISCARD_AMOUNT, tab.getDiscardAmount(), 0.0f,
+                    TAB_FOCUSED_ANIMATION_DURATION, 0);
+
+            if (i < focusIndex) {
+                // For tabs above the focused tab move them up to 0.
+                addAnimation(set, tab, SCROLL_OFFSET, tab.getScrollOffset(),
+                        tab.getScrollOffset() - mHeight - spacing, TAB_FOCUSED_ANIMATION_DURATION,
+                        0);
+            } else if (i > focusIndex) {
+                // We also need to animate the Y Translation to move them down
+                // off the screen.
+                float coveringTabPosition = layoutTab.getY();
+                float distanceToBorder = MathUtils.clamp(mHeight - coveringTabPosition, 0, mHeight);
+                float delay = TAB_FOCUSED_MAX_DELAY * distanceToBorder / mHeight;
+                addAnimation(set, tab, Y_IN_STACK_OFFSET, tab.getYInStackOffset(),
+                        tab.getYInStackOffset() + mHeight,
+                        (TAB_FOCUSED_ANIMATION_DURATION - (long) delay), (long) delay);
+            } else {
+                // This is the focused tab.  We need to scale it back to
+                // 1.0f, move it to the top of the screen, and animate the
+                // YTranslation so that it looks like it is zooming into the
+                // full screen view.
+                tab.setXOutOfStack(0.0f);
+                tab.setYOutOfStack(0.0f);
+                layoutTab.setBorderScale(1.f);
+
+                addAnimation(set, tab, SCROLL_OFFSET, tab.getScrollOffset(),
+                        Math.max(0.0f, tab.getScrollOffset() - mWidth - spacing),
+                        TAB_FOCUSED_ANIMATION_DURATION, 0);
+                addAnimation(
+                        set, tab, SCALE, tab.getScale(), 1.0f, TAB_FOCUSED_ANIMATION_DURATION, 0);
+                addAnimation(set, tab, Y_IN_STACK_INFLUENCE, tab.getYInStackInfluence(), 0.0f,
+                        TAB_FOCUSED_Y_STACK_DURATION, 0);
+                addAnimation(set, tab.getLayoutTab(), MAX_CONTENT_HEIGHT,
+                        tab.getLayoutTab().getMaxContentHeight(),
+                        tab.getLayoutTab().getUnclampedOriginalContentHeight(),
+                        TAB_FOCUSED_ANIMATION_DURATION, 0);
+                tab.setYOutOfStack(mHeight - mHeightMinusTopControls - mBorderTopHeight);
+                if (layoutTab.shouldStall()) {
+                    addAnimation(set, layoutTab, SATURATION, 1.0f, 0.0f,
+                            TAB_FOCUSED_BORDER_ALPHA_DURATION, TAB_FOCUSED_BORDER_ALPHA_DELAY);
+                }
+                addAnimation(set, tab.getLayoutTab(), TOOLBAR_ALPHA, layoutTab.getToolbarAlpha(),
+                        1.f, TAB_FOCUSED_TOOLBAR_ALPHA_DURATION, TAB_FOCUSED_TOOLBAR_ALPHA_DELAY);
+                addAnimation(set, tab.getLayoutTab(), TOOLBAR_Y_OFFSET,
+                        getToolbarOffsetToLineUpWithBorder(), 0.f,
+                        TAB_FOCUSED_TOOLBAR_ALPHA_DURATION, TAB_FOCUSED_TOOLBAR_ALPHA_DELAY);
+                addAnimation(set, tab.getLayoutTab(), SIDE_BORDER_SCALE, 1.f, 0.f,
+                        TAB_FOCUSED_TOOLBAR_ALPHA_DURATION, TAB_FOCUSED_TOOLBAR_ALPHA_DELAY);
+            }
+        }
+
+        return set;
+    }
+
+    @Override
+    protected ChromeAnimation<?> createViewMoreAnimatorSet(StackTab[] tabs, int selectedIndex) {
+        ChromeAnimation<Animatable<?>> set = new ChromeAnimation<Animatable<?>>();
+
+        if (selectedIndex + 1 >= tabs.length) return set;
+
+        float offset = tabs[selectedIndex].getScrollOffset()
+                - tabs[selectedIndex + 1].getScrollOffset()
+                + (tabs[selectedIndex].getLayoutTab().getScaledContentHeight()
+                               * VIEW_MORE_SIZE_RATIO);
+        offset = Math.max(VIEW_MORE_MIN_SIZE, offset);
+        for (int i = selectedIndex + 1; i < tabs.length; ++i) {
+            addAnimation(set, tabs[i], SCROLL_OFFSET, tabs[i].getScrollOffset(),
+                    tabs[i].getScrollOffset() + offset, VIEW_MORE_ANIMATION_DURATION, 0);
+        }
+
+        return set;
+    }
+
+    @Override
+    protected ChromeAnimation<?> createReachTopAnimatorSet(StackTab[] tabs, float warpSize) {
+        ChromeAnimation<Animatable<?>> set = new ChromeAnimation<Animatable<?>>();
+
+        float screenTarget = 0.0f;
+        for (int i = 0; i < tabs.length; ++i) {
+            if (screenTarget >= tabs[i].getLayoutTab().getY()) {
+                break;
+            }
+            addAnimation(set, tabs[i], SCROLL_OFFSET, tabs[i].getScrollOffset(),
+                    StackTab.screenToScroll(screenTarget, warpSize), REACH_TOP_ANIMATION_DURATION,
+                    0);
+            screenTarget += tabs[i].getLayoutTab().getScaledContentHeight();
+        }
+
+        return set;
+    }
+
+    @Override
+    protected ChromeAnimation<?> createNewTabOpenedAnimatorSet(
+            StackTab[] tabs, int focusIndex, float discardRange) {
+        return super.createNewTabOpenedAnimatorSet(tabs, focusIndex, -discardRange);
+    }
+
+    @Override
+    protected boolean isDefaultDiscardDirectionPositive() {
+        // On clicking the close button, discard the tab to the right on LTR, to the left on RTL.
+        return !LocalizationUtils.isLayoutRtl();
+    }
+
+    @Override
+    protected float getScreenPositionInScrollDirection(StackTab tab) {
+        return tab.getLayoutTab().getY();
+    }
+
+    @Override
+    protected void addTiltScrollAnimation(ChromeAnimation<Animatable<?>> set, LayoutTab tab,
+            float end, int duration, int startTime) {
+        addAnimation(set, tab, TILTX, tab.getTiltX(), end, duration, startTime);
+    }
+
+    @Override
+    protected float getScreenSizeInScrollDirection() {
+        return mHeight;
+    }
+
+    @Override
+    protected int getTabCreationDirection() {
+        return -1;
+    }
+}