Java Code Examples for org.chromium.chrome.browser.compositor.layouts.phone.stack.StackAnimation.OverviewAnimationType#NONE
The following examples show how to use
org.chromium.chrome.browser.compositor.layouts.phone.stack.StackAnimation.OverviewAnimationType#NONE .
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Example 1
| Source File: Stack.java From AndroidChromium with Apache License 2.0 | 5 votes |
|
/**
* Get called on down touch event.
*
* @param time The current time of the app in ms.
*/
public void onDown(long time) {
mDragLock = DragLock.NONE;
if (mOverviewAnimationType == OverviewAnimationType.NONE) {
stopScrollingMovement(time);
}
// Resets the scrolling state.
mScrollingTab = null;
commitDiscard(time, false);
}
Example 2
| Source File: Stack.java From 365browser with Apache License 2.0 | 5 votes |
|
/**
* Called on touch click event.
*
* @param time The current time of the app in ms.
* @param x The x coordinate in pixel inside the stack view.
* @param y The y coordinate in pixel inside the stack view.
*/
public void click(long time, float x, float y) {
if (mOverviewAnimationType != OverviewAnimationType.NONE
&& mOverviewAnimationType != OverviewAnimationType.DISCARD
&& mOverviewAnimationType != OverviewAnimationType.UNDISCARD
&& mOverviewAnimationType != OverviewAnimationType.DISCARD_ALL) {
return;
}
int clicked = getTabIndexAtPositon(x, y, LayoutTab.getTouchSlop());
if (clicked >= 0) {
// Check if the click was within the boundaries of the close button defined by its
// visible coordinates.
boolean isRtl =
!((mCurrentMode == Orientation.PORTRAIT) ^ LocalizationUtils.isLayoutRtl());
if (mStackTabs[clicked].getLayoutTab().checkCloseHitTest(x, y, isRtl)) {
// Tell the model to close the tab because the close button was pressed. The model
// will then trigger a notification which will start the actual close process here
// if necessary.
StackTab tab = mStackTabs[clicked];
final float halfCloseBtnWidth = LayoutTab.CLOSE_BUTTON_WIDTH_DP / 2.f;
final float halfCloseBtnHeight = mBorderTopPadding / 2.f;
final float contentWidth = tab.getLayoutTab().getOriginalContentWidth();
tab.setDiscardOriginY(halfCloseBtnHeight);
tab.setDiscardOriginX(isRtl ? halfCloseBtnWidth : contentWidth - halfCloseBtnWidth);
tab.setDiscardFromClick(true);
mLayout.uiRequestingCloseTab(time, tab.getId());
RecordUserAction.record("MobileStackViewCloseTab");
RecordUserAction.record("MobileTabClosed");
} else {
// Let the model know that a new {@link LayoutTab} was selected. The model will
// notify us if we need to do anything visual. setIndex() will possibly switch the
// models and broadcast the event.
mLayout.uiSelectingTab(time, mStackTabs[clicked].getId());
}
}
}
Example 3
| Source File: Stack.java From 365browser with Apache License 2.0 | 5 votes |
|
/**
* Get called on long press touch event.
*
* @param time The current time of the app in ms.
* @param x The x coordinate in pixel inside the stack view.
* @param y The y coordinate in pixel inside the stack view.
*/
public void onLongPress(long time, float x, float y) {
if (mOverviewAnimationType == OverviewAnimationType.NONE) {
mLongPressSelected = getTabIndexAtPositon(x, y);
if (mLongPressSelected >= 0) {
startAnimation(time, OverviewAnimationType.VIEW_MORE, mLongPressSelected, false);
mEvenOutProgress = 0.0f;
}
}
}
Example 4
| Source File: Stack.java From 365browser with Apache License 2.0 | 5 votes |
|
/**
* Get called on down touch event.
*
* @param time The current time of the app in ms.
*/
public void onDown(long time) {
mDragLock = DragLock.NONE;
if (mOverviewAnimationType == OverviewAnimationType.NONE) {
stopScrollingMovement(time);
}
// Resets the scrolling state.
mScrollingTab = null;
commitDiscard(time, false);
}
Example 5
| Source File: Stack.java From AndroidChromium with Apache License 2.0 | 5 votes |
|
private boolean allowOverscroll() {
// All the animations that want to leave the tilt value to be set by the overscroll must
// be added here.
return (mOverviewAnimationType == OverviewAnimationType.NONE
|| mOverviewAnimationType == OverviewAnimationType.VIEW_MORE
|| mOverviewAnimationType == OverviewAnimationType.ENTER_STACK)
&& mPinch0TabIndex < 0;
}
Example 6
| Source File: Stack.java From AndroidChromium with Apache License 2.0 | 5 votes |
|
/**
* Called on touch click event.
*
* @param time The current time of the app in ms.
* @param x The x coordinate in pixel inside the stack view.
* @param y The y coordinate in pixel inside the stack view.
*/
public void click(long time, float x, float y) {
if (mOverviewAnimationType != OverviewAnimationType.NONE
&& mOverviewAnimationType != OverviewAnimationType.DISCARD
&& mOverviewAnimationType != OverviewAnimationType.UNDISCARD
&& mOverviewAnimationType != OverviewAnimationType.DISCARD_ALL) {
return;
}
int clicked = getTabIndexAtPositon(x, y, LayoutTab.getTouchSlop());
if (clicked >= 0) {
// Check if the click was within the boundaries of the close button defined by its
// visible coordinates.
boolean isRtl =
!((mCurrentMode == Orientation.PORTRAIT) ^ LocalizationUtils.isLayoutRtl());
if (mStackTabs[clicked].getLayoutTab().checkCloseHitTest(x, y, isRtl)) {
// Tell the model to close the tab because the close button was pressed. The model
// will then trigger a notification which will start the actual close process here
// if necessary.
StackTab tab = mStackTabs[clicked];
final float halfCloseBtnWidth = LayoutTab.CLOSE_BUTTON_WIDTH_DP / 2.f;
final float halfCloseBtnHeight = mBorderTopPadding / 2.f;
final float contentWidth = tab.getLayoutTab().getOriginalContentWidth();
tab.setDiscardOriginY(halfCloseBtnHeight);
tab.setDiscardOriginX(isRtl ? halfCloseBtnWidth : contentWidth - halfCloseBtnWidth);
tab.setDiscardFromClick(true);
mLayout.uiRequestingCloseTab(time, tab.getId());
RecordUserAction.record("MobileStackViewCloseTab");
RecordUserAction.record("MobileTabClosed");
} else {
// Let the model know that a new {@link LayoutTab} was selected. The model will
// notify us if we need to do anything visual. setIndex() will possibly switch the
// models and broadcast the event.
mLayout.uiSelectingTab(time, mStackTabs[clicked].getId());
}
}
}
Example 7
| Source File: Stack.java From AndroidChromium with Apache License 2.0 | 5 votes |
|
/**
* Get called on long press touch event.
*
* @param time The current time of the app in ms.
* @param x The x coordinate in pixel inside the stack view.
* @param y The y coordinate in pixel inside the stack view.
*/
public void onLongPress(long time, float x, float y) {
if (mOverviewAnimationType == OverviewAnimationType.NONE) {
mLongPressSelected = getTabIndexAtPositon(x, y);
if (mLongPressSelected >= 0) {
startAnimation(time, OverviewAnimationType.VIEW_MORE, mLongPressSelected, false);
mEvenOutProgress = 0.0f;
}
}
}
Example 8
| Source File: Stack.java From 365browser with Apache License 2.0 | 5 votes |
|
private boolean allowOverscroll() {
// All the animations that want to leave the tilt value to be set by the overscroll must
// be added here.
return (mOverviewAnimationType == OverviewAnimationType.NONE
|| mOverviewAnimationType == OverviewAnimationType.VIEW_MORE
|| mOverviewAnimationType == OverviewAnimationType.ENTER_STACK)
&& mPinch0TabIndex < 0;
}
Example 9
| Source File: Stack.java From delion with Apache License 2.0 | 5 votes |
|
private boolean allowOverscroll() {
// All the animations that want to leave the tilt value to be set by the overscroll must
// be added here.
return (mOverviewAnimationType == OverviewAnimationType.NONE
|| mOverviewAnimationType == OverviewAnimationType.VIEW_MORE
|| mOverviewAnimationType == OverviewAnimationType.ENTER_STACK)
&& mPinch0TabIndex < 0;
}
Example 10
| Source File: Stack.java From delion with Apache License 2.0 | 5 votes |
|
/**
* Called on touch click event.
*
* @param time The current time of the app in ms.
* @param x The x coordinate in pixel inside the stack view.
* @param y The y coordinate in pixel inside the stack view.
*/
public void click(long time, float x, float y) {
if (mOverviewAnimationType != OverviewAnimationType.NONE
&& mOverviewAnimationType != OverviewAnimationType.DISCARD
&& mOverviewAnimationType != OverviewAnimationType.UNDISCARD
&& mOverviewAnimationType != OverviewAnimationType.DISCARD_ALL) {
return;
}
int clicked = getTabIndexAtPositon(x, y, LayoutTab.getTouchSlop());
if (clicked >= 0) {
// Check if the click was within the boundaries of the close button defined by its
// visible coordinates.
boolean isRtl =
!((mCurrentMode == Orientation.PORTRAIT) ^ LocalizationUtils.isLayoutRtl());
if (mStackTabs[clicked].getLayoutTab().checkCloseHitTest(x, y, isRtl)) {
// Tell the model to close the tab because the close button was pressed. The model
// will then trigger a notification which will start the actual close process here
// if necessary.
StackTab tab = mStackTabs[clicked];
final float halfCloseBtnWidth = LayoutTab.CLOSE_BUTTON_WIDTH_DP / 2.f;
final float halfCloseBtnHeight = mBorderTopPadding / 2.f;
final float contentWidth = tab.getLayoutTab().getOriginalContentWidth();
tab.setDiscardOriginY(halfCloseBtnHeight);
tab.setDiscardOriginX(isRtl ? halfCloseBtnWidth : contentWidth - halfCloseBtnWidth);
tab.setDiscardFromClick(true);
mLayout.uiRequestingCloseTab(time, tab.getId());
RecordUserAction.record("MobileStackViewCloseTab");
RecordUserAction.record("MobileTabClosed");
} else {
// Let the model know that a new {@link LayoutTab} was selected. The model will
// notify us if we need to do anything visual. setIndex() will possibly switch the
// models and broadcast the event.
mLayout.uiSelectingTab(time, mStackTabs[clicked].getId());
}
}
}
Example 11
| Source File: Stack.java From delion with Apache License 2.0 | 5 votes |
|
/**
* Get called on long press touch event.
*
* @param time The current time of the app in ms.
* @param x The x coordinate in pixel inside the stack view.
* @param y The y coordinate in pixel inside the stack view.
*/
public void onLongPress(long time, float x, float y) {
if (mOverviewAnimationType == OverviewAnimationType.NONE) {
mLongPressSelected = getTabIndexAtPositon(x, y);
if (mLongPressSelected >= 0) {
startAnimation(time, OverviewAnimationType.VIEW_MORE, mLongPressSelected, false);
mEvenOutProgress = 0.0f;
}
}
}
Example 12
| Source File: Stack.java From delion with Apache License 2.0 | 5 votes |
|
/**
* Get called on down touch event.
*
* @param time The current time of the app in ms.
*/
public void onDown(long time) {
mDragLock = DragLock.NONE;
if (mOverviewAnimationType == OverviewAnimationType.NONE) {
stopScrollingMovement(time);
}
// Resets the scrolling state.
mScrollingTab = null;
commitDiscard(time, false);
}
Example 13
| Source File: Stack.java From AndroidChromium with Apache License 2.0 | 4 votes |
|
/**
* Discards and updates the position based on the input event values.
*
* @param x The x coordinate of the end of the drag event.
* @param y The y coordinate of the end of the drag event.
* @param amountX The number of pixels dragged in the x direction since the last event.
* @param amountY The number of pixels dragged in the y direction since the last event.
*/
private void discard(float x, float y, float amountX, float amountY) {
if (mStackTabs == null
|| (mOverviewAnimationType != OverviewAnimationType.NONE
&& mOverviewAnimationType != OverviewAnimationType.DISCARD
&& mOverviewAnimationType != OverviewAnimationType.DISCARD_ALL
&& mOverviewAnimationType != OverviewAnimationType.UNDISCARD)) {
return;
}
if (mDiscardingTab == null) {
if (!mInSwipe) {
mDiscardingTab = getTabAtPositon(x, y);
} else {
if (mTabModel.index() < 0) return;
mDiscardingTab = mStackTabs[mTabModel.index()];
}
if (mDiscardingTab != null) {
cancelDiscardScrollingAnimation();
// Make sure we are well within the tab in the discard direction.
RectF target = mDiscardingTab.getLayoutTab().getClickTargetBounds();
float distanceToEdge;
float edgeToEdge;
if (mCurrentMode == Orientation.PORTRAIT) {
mDiscardDirection = 1.0f;
distanceToEdge = Math.max(target.left - x, x - target.right);
edgeToEdge = target.width();
} else {
mDiscardDirection = 2.0f - 4.0f * (x / mLayout.getWidth());
mDiscardDirection = MathUtils.clamp(mDiscardDirection, -1.0f, 1.0f);
distanceToEdge = Math.max(target.top - y, y - target.bottom);
edgeToEdge = target.height();
}
float scaledDiscardX = x - mDiscardingTab.getLayoutTab().getX();
float scaledDiscardY = y - mDiscardingTab.getLayoutTab().getY();
mDiscardingTab.setDiscardOriginX(scaledDiscardX / mDiscardingTab.getScale());
mDiscardingTab.setDiscardOriginY(scaledDiscardY / mDiscardingTab.getScale());
mDiscardingTab.setDiscardFromClick(false);
if (Math.abs(distanceToEdge) < DISCARD_SAFE_SELECTION_PCTG * edgeToEdge) {
mDiscardingTab = null;
}
}
}
if (mDiscardingTab != null) {
float deltaAmount = mCurrentMode == Orientation.PORTRAIT ? amountX : amountY;
mDiscardingTab.addToDiscardAmount(deltaAmount);
}
}
Example 14
| Source File: Stack.java From AndroidChromium with Apache License 2.0 | 4 votes |
|
/**
* Performs the necessary actions to finish the current animation.
*
* @param time The current time of the app in ms.
*/
private void finishAnimation(long time) {
if (mTabAnimations != null) mTabAnimations.updateAndFinish();
if (mViewAnimations != null) mViewAnimations.end();
if (mTabAnimations != null || mViewAnimations != null) mLayout.onStackAnimationFinished();
switch (mOverviewAnimationType) {
case ENTER_STACK:
mLayout.uiDoneEnteringStack();
break;
case FULL_ROLL:
springBack(time);
break;
case TAB_FOCUSED:
// Purposeful fall through
case NEW_TAB_OPENED:
// Nothing to do.
break;
case DISCARD_ALL:
mLayout.uiDoneClosingAllTabs(mTabModel.isIncognito());
cleanupStackTabState();
break;
case UNDISCARD:
// Purposeful fall through because if UNDISCARD animation updated DISCARD animation,
// DISCARD animation clean up below is not called so UNDISCARD is responsible for
// cleaning it up.
case DISCARD:
// Remove all dying tabs from mStackTabs.
if (mStackTabs != null) {
// Request for the model to be updated.
for (int i = 0; i < mStackTabs.length; ++i) {
StackTab tab = mStackTabs[i];
if (tab.isDying()) {
mLayout.uiDoneClosingTab(
time, tab.getId(), true, mTabModel.isIncognito());
}
}
}
cleanupStackTabState();
break;
default:
break;
}
if (mOverviewAnimationType != OverviewAnimationType.NONE) {
// sync the scrollTarget and scrollOffset;
setScrollTarget(mScrollOffset, true);
mOverviewAnimationType = OverviewAnimationType.NONE;
}
mTabAnimations = null;
mViewAnimations = null;
}
Example 15
| Source File: Stack.java From delion with Apache License 2.0 | 4 votes |
|
/**
* Performs the necessary actions to finish the current animation.
*
* @param time The current time of the app in ms.
*/
private void finishAnimation(long time) {
if (mTabAnimations != null) mTabAnimations.updateAndFinish();
if (mViewAnimations != null) mViewAnimations.end();
if (mTabAnimations != null || mViewAnimations != null) mLayout.onStackAnimationFinished();
switch (mOverviewAnimationType) {
case ENTER_STACK:
mLayout.uiDoneEnteringStack();
break;
case FULL_ROLL:
springBack(time);
break;
case TAB_FOCUSED:
// Purposeful fall through
case NEW_TAB_OPENED:
// Nothing to do.
break;
case DISCARD_ALL:
mLayout.uiDoneClosingAllTabs(mTabModel.isIncognito());
cleanupStackTabState();
break;
case UNDISCARD:
// Purposeful fall through because if UNDISCARD animation updated DISCARD animation,
// DISCARD animation clean up below is not called so UNDISCARD is responsible for
// cleaning it up.
case DISCARD:
// Remove all dying tabs from mStackTabs.
if (mStackTabs != null) {
// Request for the model to be updated.
for (int i = 0; i < mStackTabs.length; ++i) {
StackTab tab = mStackTabs[i];
if (tab.isDying()) {
mLayout.uiDoneClosingTab(
time, tab.getId(), true, mTabModel.isIncognito());
}
}
}
cleanupStackTabState();
break;
default:
break;
}
if (mOverviewAnimationType != OverviewAnimationType.NONE) {
// sync the scrollTarget and scrollOffset;
setScrollTarget(mScrollOffset, true);
mOverviewAnimationType = OverviewAnimationType.NONE;
}
mTabAnimations = null;
mViewAnimations = null;
}
Example 16
| Source File: Stack.java From 365browser with Apache License 2.0 | 4 votes |
|
/**
* Performs the necessary actions to finish the current animation.
*
* @param time The current time of the app in ms.
*/
private void finishAnimation(long time) {
if (mTabAnimations != null) mTabAnimations.updateAndFinish();
if (mViewAnimations != null) mViewAnimations.end();
if (mTabAnimations != null || mViewAnimations != null) mLayout.onStackAnimationFinished();
switch (mOverviewAnimationType) {
case ENTER_STACK:
mLayout.uiDoneEnteringStack();
break;
case FULL_ROLL:
springBack(time);
break;
case TAB_FOCUSED:
// Purposeful fall through
case NEW_TAB_OPENED:
// Nothing to do.
break;
case DISCARD_ALL:
mLayout.uiDoneClosingAllTabs(mTabModel.isIncognito());
cleanupStackTabState();
break;
case UNDISCARD:
// Purposeful fall through because if UNDISCARD animation updated DISCARD animation,
// DISCARD animation clean up below is not called so UNDISCARD is responsible for
// cleaning it up.
case DISCARD:
// Remove all dying tabs from mStackTabs.
if (mStackTabs != null) {
// Request for the model to be updated.
for (int i = 0; i < mStackTabs.length; ++i) {
StackTab tab = mStackTabs[i];
if (tab.isDying()) {
mLayout.uiDoneClosingTab(
time, tab.getId(), true, mTabModel.isIncognito());
}
}
}
cleanupStackTabState();
break;
default:
break;
}
if (mOverviewAnimationType != OverviewAnimationType.NONE) {
// sync the scrollTarget and scrollOffset. For ENTER_STACK animation, don't sync to
// ensure the tab can tilt back.
if (mOverviewAnimationType != OverviewAnimationType.ENTER_STACK) {
setScrollTarget(mScrollOffset, true);
}
mOverviewAnimationType = OverviewAnimationType.NONE;
}
mTabAnimations = null;
mViewAnimations = null;
}
Example 17
| Source File: Stack.java From 365browser with Apache License 2.0 | 4 votes |
|
/**
* Discards and updates the position based on the input event values.
*
* @param x The x coordinate of the end of the drag event.
* @param y The y coordinate of the end of the drag event.
* @param amountX The number of pixels dragged in the x direction since the last event.
* @param amountY The number of pixels dragged in the y direction since the last event.
*/
private void discard(float x, float y, float amountX, float amountY) {
if (mStackTabs == null
|| (mOverviewAnimationType != OverviewAnimationType.NONE
&& mOverviewAnimationType != OverviewAnimationType.DISCARD
&& mOverviewAnimationType != OverviewAnimationType.DISCARD_ALL
&& mOverviewAnimationType != OverviewAnimationType.UNDISCARD)) {
return;
}
if (mDiscardingTab == null) {
if (!mInSwipe) {
mDiscardingTab = getTabAtPositon(x, y);
} else {
if (mTabModel.index() < 0) return;
mDiscardingTab = mStackTabs[mTabModel.index()];
}
if (mDiscardingTab != null) {
cancelDiscardScrollingAnimation();
// Make sure we are well within the tab in the discard direction.
RectF target = mDiscardingTab.getLayoutTab().getClickTargetBounds();
float distanceToEdge;
float edgeToEdge;
if (mCurrentMode == Orientation.PORTRAIT) {
mDiscardDirection = 1.0f;
distanceToEdge = Math.max(target.left - x, x - target.right);
edgeToEdge = target.width();
} else {
mDiscardDirection = 2.0f - 4.0f * (x / mLayout.getWidth());
mDiscardDirection = MathUtils.clamp(mDiscardDirection, -1.0f, 1.0f);
distanceToEdge = Math.max(target.top - y, y - target.bottom);
edgeToEdge = target.height();
}
float scaledDiscardX = x - mDiscardingTab.getLayoutTab().getX();
float scaledDiscardY = y - mDiscardingTab.getLayoutTab().getY();
mDiscardingTab.setDiscardOriginX(scaledDiscardX / mDiscardingTab.getScale());
mDiscardingTab.setDiscardOriginY(scaledDiscardY / mDiscardingTab.getScale());
mDiscardingTab.setDiscardFromClick(false);
if (Math.abs(distanceToEdge) < DISCARD_SAFE_SELECTION_PCTG * edgeToEdge) {
mDiscardingTab = null;
}
}
}
if (mDiscardingTab != null) {
float deltaAmount = mCurrentMode == Orientation.PORTRAIT ? amountX : amountY;
mDiscardingTab.addToDiscardAmount(deltaAmount);
}
}
Example 18
| Source File: Stack.java From 365browser with Apache License 2.0 | 4 votes |
|
/**
* Evens out auto-magically the cards as the stack get scrolled.
*
* @param amount The amount of scroll performed in pixel. The sign indicates the
* direction.
* @param allowReverseDirection Whether or not to allow corrections in the reverse direction of
* the amount scrolled.
* @return True if any tab had been 'visibly' moved.
*/
private boolean evenOutTabs(float amount, boolean allowReverseDirection) {
if (mStackTabs == null || mOverviewAnimationType != OverviewAnimationType.NONE
|| mEvenOutProgress >= 1.0f || amount == 0) {
return false;
}
boolean changed = false;
boolean reverseScrolling = false;
// The evening out process last until mEvenOutRate reaches 1.0. Tabs blend linearly
// between the current position to a nice evenly scaled pattern. Because we do not store
// the starting position for each tab we need more complicated math to do the blend.
// The absoluteProgress is how much we need progress this step on the [0, 1] scale.
float absoluteProgress = Math.min(Math.abs(amount) * mEvenOutRate, 1.0f - mEvenOutProgress);
// The relativeProgress is how much we need to blend the target to the current to get there.
float relativeProgress = absoluteProgress / (1.0f - mEvenOutProgress);
float screenMax = getScrollDimensionSize();
for (int i = 0; i < mStackTabs.length; ++i) {
float source = mStackTabs[i].getScrollOffset();
float target = screenToScroll(i * mSpacing);
float sourceScreen = Math.min(screenMax, scrollToScreen(source + mScrollTarget));
float targetScreen = Math.min(screenMax, scrollToScreen(target + mScrollTarget));
// If the target and the current position matches on the screen then we snap to the
// target.
if (sourceScreen == targetScreen) {
mStackTabs[i].setScrollOffset(target);
continue;
}
float step = source + (target - source) * relativeProgress;
float stepScreen = Math.min(screenMax, scrollToScreen(step + mScrollTarget));
// If the step can be performed without noticing then we do it.
if (sourceScreen == stepScreen) {
mStackTabs[i].setScrollOffset(step);
continue;
}
// If the scrolling goes in the same direction as the step then the motion is applied.
if ((targetScreen - sourceScreen) * amount > 0 || allowReverseDirection) {
mStackTabs[i].setScrollOffset(step);
changed = true;
} else {
reverseScrolling = true;
}
}
// Only account for progress if the scrolling was in the right direction. It assumes here
// That if any of the tabs was going in the wrong direction then the progress is not
// recorded at all. This is very conservative to avoid poping in the scrolling. It works
// for now but might need to be revisited if we see artifacts.
if (!reverseScrolling) {
mEvenOutProgress += absoluteProgress;
}
return changed;
}
Example 19
| Source File: Stack.java From delion with Apache License 2.0 | 4 votes |
|
/**
* Evens out auto-magically the cards as the stack get scrolled.
*
* @param amount The amount of scroll performed in pixel. The sign indicates the
* direction.
* @param allowReverseDirection Whether or not to allow corrections in the reverse direction of
* the amount scrolled.
* @return True if any tab had been 'visibly' moved.
*/
private boolean evenOutTabs(float amount, boolean allowReverseDirection) {
if (mStackTabs == null || mOverviewAnimationType != OverviewAnimationType.NONE
|| mEvenOutProgress >= 1.0f || amount == 0) {
return false;
}
boolean changed = false;
boolean reverseScrolling = false;
// The evening out process last until mEvenOutRate reaches 1.0. Tabs blend linearly
// between the current position to a nice evenly scaled pattern. Because we do not store
// the starting position for each tab we need more complicated math to do the blend.
// The absoluteProgress is how much we need progress this step on the [0, 1] scale.
float absoluteProgress = Math.min(Math.abs(amount) * mEvenOutRate, 1.0f - mEvenOutProgress);
// The relativeProgress is how much we need to blend the target to the current to get there.
float relativeProgress = absoluteProgress / (1.0f - mEvenOutProgress);
float screenMax = getScrollDimensionSize();
for (int i = 0; i < mStackTabs.length; ++i) {
float source = mStackTabs[i].getScrollOffset();
float target = screenToScroll(i * mSpacing);
float sourceScreen = Math.min(screenMax, scrollToScreen(source + mScrollTarget));
float targetScreen = Math.min(screenMax, scrollToScreen(target + mScrollTarget));
// If the target and the current position matches on the screen then we snap to the
// target.
if (sourceScreen == targetScreen) {
mStackTabs[i].setScrollOffset(target);
continue;
}
float step = source + (target - source) * relativeProgress;
float stepScreen = Math.min(screenMax, scrollToScreen(step + mScrollTarget));
// If the step can be performed without noticing then we do it.
if (sourceScreen == stepScreen) {
mStackTabs[i].setScrollOffset(step);
continue;
}
// If the scrolling goes in the same direction as the step then the motion is applied.
if ((targetScreen - sourceScreen) * amount > 0 || allowReverseDirection) {
mStackTabs[i].setScrollOffset(step);
changed = true;
} else {
reverseScrolling = true;
}
}
// Only account for progress if the scrolling was in the right direction. It assumes here
// That if any of the tabs was going in the wrong direction then the progress is not
// recorded at all. This is very conservative to avoid poping in the scrolling. It works
// for now but might need to be revisited if we see artifacts.
if (!reverseScrolling) {
mEvenOutProgress += absoluteProgress;
}
return changed;
}
Example 20
| Source File: Stack.java From delion with Apache License 2.0 | 4 votes |
|
/**
* Discards and updates the position based on the input event values.
*
* @param x The x coordinate of the end of the drag event.
* @param y The y coordinate of the end of the drag event.
* @param amountX The number of pixels dragged in the x direction since the last event.
* @param amountY The number of pixels dragged in the y direction since the last event.
*/
private void discard(float x, float y, float amountX, float amountY) {
if (mStackTabs == null
|| (mOverviewAnimationType != OverviewAnimationType.NONE
&& mOverviewAnimationType != OverviewAnimationType.DISCARD
&& mOverviewAnimationType != OverviewAnimationType.DISCARD_ALL
&& mOverviewAnimationType != OverviewAnimationType.UNDISCARD)) {
return;
}
if (mDiscardingTab == null) {
if (!mInSwipe) {
mDiscardingTab = getTabAtPositon(x, y);
} else {
if (mTabModel.index() < 0) return;
mDiscardingTab = mStackTabs[mTabModel.index()];
}
if (mDiscardingTab != null) {
cancelDiscardScrollingAnimation();
// Make sure we are well within the tab in the discard direction.
RectF target = mDiscardingTab.getLayoutTab().getClickTargetBounds();
float distanceToEdge;
float edgeToEdge;
if (mCurrentMode == Orientation.PORTRAIT) {
mDiscardDirection = 1.0f;
distanceToEdge = Math.max(target.left - x, x - target.right);
edgeToEdge = target.width();
} else {
mDiscardDirection = 2.0f - 4.0f * (x / mLayout.getWidth());
mDiscardDirection = MathUtils.clamp(mDiscardDirection, -1.0f, 1.0f);
distanceToEdge = Math.max(target.top - y, y - target.bottom);
edgeToEdge = target.height();
}
float scaledDiscardX = x - mDiscardingTab.getLayoutTab().getX();
float scaledDiscardY = y - mDiscardingTab.getLayoutTab().getY();
mDiscardingTab.setDiscardOriginX(scaledDiscardX / mDiscardingTab.getScale());
mDiscardingTab.setDiscardOriginY(scaledDiscardY / mDiscardingTab.getScale());
mDiscardingTab.setDiscardFromClick(false);
if (Math.abs(distanceToEdge) < DISCARD_SAFE_SELECTION_PCTG * edgeToEdge) {
mDiscardingTab = null;
}
}
}
if (mDiscardingTab != null) {
float deltaAmount = mCurrentMode == Orientation.PORTRAIT ? amountX : amountY;
mDiscardingTab.addToDiscardAmount(deltaAmount);
}
}
