/*
* Copyright (C) 2014 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 android.view;
import android.graphics.Rect;
/**
* Describes a set of insets for window content.
*
* <p>WindowInsets are immutable and may be expanded to include more inset types in the future.
* To adjust insets, use one of the supplied clone methods to obtain a new WindowInsets instance
* with the adjusted properties.</p>
*
* @see View.OnApplyWindowInsetsListener
* @see View#onApplyWindowInsets(WindowInsets)
*/
public final class WindowInsets {
private Rect mSystemWindowInsets;
private Rect mWindowDecorInsets;
private Rect mStableInsets;
private Rect mTempRect;
private boolean mIsRound;
private boolean mSystemWindowInsetsConsumed = false;
private boolean mWindowDecorInsetsConsumed = false;
private boolean mStableInsetsConsumed = false;
private static final Rect EMPTY_RECT = new Rect(0, 0, 0, 0);
/**
* Since new insets may be added in the future that existing apps couldn't
* know about, this fully empty constant shouldn't be made available to apps
* since it would allow them to inadvertently consume unknown insets by returning it.
* @hide
*/
public static final WindowInsets CONSUMED;
static {
CONSUMED = new WindowInsets(null, null, null, false);
}
/** @hide */
public WindowInsets(Rect systemWindowInsets, Rect windowDecorInsets, Rect stableInsets,
boolean isRound) {
mSystemWindowInsetsConsumed = systemWindowInsets == null;
mSystemWindowInsets = mSystemWindowInsetsConsumed ? EMPTY_RECT : systemWindowInsets;
mWindowDecorInsetsConsumed = windowDecorInsets == null;
mWindowDecorInsets = mWindowDecorInsetsConsumed ? EMPTY_RECT : windowDecorInsets;
mStableInsetsConsumed = stableInsets == null;
mStableInsets = mStableInsetsConsumed ? EMPTY_RECT : stableInsets;
mIsRound = isRound;
}
/**
* Construct a new WindowInsets, copying all values from a source WindowInsets.
*
* @param src Source to copy insets from
*/
public WindowInsets(WindowInsets src) {
mSystemWindowInsets = src.mSystemWindowInsets;
mWindowDecorInsets = src.mWindowDecorInsets;
mStableInsets = src.mStableInsets;
mSystemWindowInsetsConsumed = src.mSystemWindowInsetsConsumed;
mWindowDecorInsetsConsumed = src.mWindowDecorInsetsConsumed;
mStableInsetsConsumed = src.mStableInsetsConsumed;
mIsRound = src.mIsRound;
}
/** @hide */
public WindowInsets(Rect systemWindowInsets) {
this(systemWindowInsets, null, null, false);
}
/**
* Used to provide a safe copy of the system window insets to pass through
* to the existing fitSystemWindows method and other similar internals.
* @hide
*/
public Rect getSystemWindowInsets() {
if (mTempRect == null) {
mTempRect = new Rect();
}
if (mSystemWindowInsets != null) {
mTempRect.set(mSystemWindowInsets);
} else {
// If there were no system window insets, this is just empty.
mTempRect.setEmpty();
}
return mTempRect;
}
/**
* Returns the left system window inset in pixels.
*
* <p>The system window inset represents the area of a full-screen window that is
* partially or fully obscured by the status bar, navigation bar, IME or other system windows.
* </p>
*
* @return The left system window inset
*/
public int getSystemWindowInsetLeft() {
return mSystemWindowInsets.left;
}
/**
* Returns the top system window inset in pixels.
*
* <p>The system window inset represents the area of a full-screen window that is
* partially or fully obscured by the status bar, navigation bar, IME or other system windows.
* </p>
*
* @return The top system window inset
*/
public int getSystemWindowInsetTop() {
return mSystemWindowInsets.top;
}
/**
* Returns the right system window inset in pixels.
*
* <p>The system window inset represents the area of a full-screen window that is
* partially or fully obscured by the status bar, navigation bar, IME or other system windows.
* </p>
*
* @return The right system window inset
*/
public int getSystemWindowInsetRight() {
return mSystemWindowInsets.right;
}
/**
* Returns the bottom system window inset in pixels.
*
* <p>The system window inset represents the area of a full-screen window that is
* partially or fully obscured by the status bar, navigation bar, IME or other system windows.
* </p>
*
* @return The bottom system window inset
*/
public int getSystemWindowInsetBottom() {
return mSystemWindowInsets.bottom;
}
/**
* Returns the left window decor inset in pixels.
*
* <p>The window decor inset represents the area of the window content area that is
* partially or fully obscured by decorations within the window provided by the framework.
* This can include action bars, title bars, toolbars, etc.</p>
*
* @return The left window decor inset
* @hide pending API
*/
public int getWindowDecorInsetLeft() {
return mWindowDecorInsets.left;
}
/**
* Returns the top window decor inset in pixels.
*
* <p>The window decor inset represents the area of the window content area that is
* partially or fully obscured by decorations within the window provided by the framework.
* This can include action bars, title bars, toolbars, etc.</p>
*
* @return The top window decor inset
* @hide pending API
*/
public int getWindowDecorInsetTop() {
return mWindowDecorInsets.top;
}
/**
* Returns the right window decor inset in pixels.
*
* <p>The window decor inset represents the area of the window content area that is
* partially or fully obscured by decorations within the window provided by the framework.
* This can include action bars, title bars, toolbars, etc.</p>
*
* @return The right window decor inset
* @hide pending API
*/
public int getWindowDecorInsetRight() {
return mWindowDecorInsets.right;
}
/**
* Returns the bottom window decor inset in pixels.
*
* <p>The window decor inset represents the area of the window content area that is
* partially or fully obscured by decorations within the window provided by the framework.
* This can include action bars, title bars, toolbars, etc.</p>
*
* @return The bottom window decor inset
* @hide pending API
*/
public int getWindowDecorInsetBottom() {
return mWindowDecorInsets.bottom;
}
/**
* Returns true if this WindowInsets has nonzero system window insets.
*
* <p>The system window inset represents the area of a full-screen window that is
* partially or fully obscured by the status bar, navigation bar, IME or other system windows.
* </p>
*
* @return true if any of the system window inset values are nonzero
*/
public boolean hasSystemWindowInsets() {
return mSystemWindowInsets.left != 0 || mSystemWindowInsets.top != 0 ||
mSystemWindowInsets.right != 0 || mSystemWindowInsets.bottom != 0;
}
/**
* Returns true if this WindowInsets has nonzero window decor insets.
*
* <p>The window decor inset represents the area of the window content area that is
* partially or fully obscured by decorations within the window provided by the framework.
* This can include action bars, title bars, toolbars, etc.</p>
*
* @return true if any of the window decor inset values are nonzero
* @hide pending API
*/
public boolean hasWindowDecorInsets() {
return mWindowDecorInsets.left != 0 || mWindowDecorInsets.top != 0 ||
mWindowDecorInsets.right != 0 || mWindowDecorInsets.bottom != 0;
}
/**
* Returns true if this WindowInsets has any nonzero insets.
*
* @return true if any inset values are nonzero
*/
public boolean hasInsets() {
return hasSystemWindowInsets() || hasWindowDecorInsets();
}
/**
* Check if these insets have been fully consumed.
*
* <p>Insets are considered "consumed" if the applicable <code>consume*</code> methods
* have been called such that all insets have been set to zero. This affects propagation of
* insets through the view hierarchy; insets that have not been fully consumed will continue
* to propagate down to child views.</p>
*
* <p>The result of this method is equivalent to the return value of
* {@link View#fitSystemWindows(android.graphics.Rect)}.</p>
*
* @return true if the insets have been fully consumed.
*/
public boolean isConsumed() {
return mSystemWindowInsetsConsumed && mWindowDecorInsetsConsumed && mStableInsetsConsumed;
}
/**
* Returns true if the associated window has a round shape.
*
* <p>A round window's left, top, right and bottom edges reach all the way to the
* associated edges of the window but the corners may not be visible. Views responding
* to round insets should take care to not lay out critical elements within the corners
* where they may not be accessible.</p>
*
* @return True if the window is round
*/
public boolean isRound() {
return mIsRound;
}
/**
* Returns a copy of this WindowInsets with the system window insets fully consumed.
*
* @return A modified copy of this WindowInsets
*/
public WindowInsets consumeSystemWindowInsets() {
final WindowInsets result = new WindowInsets(this);
result.mSystemWindowInsets = EMPTY_RECT;
result.mSystemWindowInsetsConsumed = true;
return result;
}
/**
* Returns a copy of this WindowInsets with selected system window insets fully consumed.
*
* @param left true to consume the left system window inset
* @param top true to consume the top system window inset
* @param right true to consume the right system window inset
* @param bottom true to consume the bottom system window inset
* @return A modified copy of this WindowInsets
* @hide pending API
*/
public WindowInsets consumeSystemWindowInsets(boolean left, boolean top,
boolean right, boolean bottom) {
if (left || top || right || bottom) {
final WindowInsets result = new WindowInsets(this);
result.mSystemWindowInsets = new Rect(
left ? 0 : mSystemWindowInsets.left,
top ? 0 : mSystemWindowInsets.top,
right ? 0 : mSystemWindowInsets.right,
bottom ? 0 : mSystemWindowInsets.bottom);
return result;
}
return this;
}
/**
* Returns a copy of this WindowInsets with selected system window insets replaced
* with new values.
*
* @param left New left inset in pixels
* @param top New top inset in pixels
* @param right New right inset in pixels
* @param bottom New bottom inset in pixels
* @return A modified copy of this WindowInsets
*/
public WindowInsets replaceSystemWindowInsets(int left, int top,
int right, int bottom) {
final WindowInsets result = new WindowInsets(this);
result.mSystemWindowInsets = new Rect(left, top, right, bottom);
return result;
}
/**
* Returns a copy of this WindowInsets with selected system window insets replaced
* with new values.
*
* @param systemWindowInsets New system window insets. Each field is the inset in pixels
* for that edge
* @return A modified copy of this WindowInsets
*/
public WindowInsets replaceSystemWindowInsets(Rect systemWindowInsets) {
final WindowInsets result = new WindowInsets(this);
result.mSystemWindowInsets = new Rect(systemWindowInsets);
return result;
}
/**
* @hide
*/
public WindowInsets consumeWindowDecorInsets() {
final WindowInsets result = new WindowInsets(this);
result.mWindowDecorInsets.set(0, 0, 0, 0);
result.mWindowDecorInsetsConsumed = true;
return result;
}
/**
* @hide
*/
public WindowInsets consumeWindowDecorInsets(boolean left, boolean top,
boolean right, boolean bottom) {
if (left || top || right || bottom) {
final WindowInsets result = new WindowInsets(this);
result.mWindowDecorInsets = new Rect(left ? 0 : mWindowDecorInsets.left,
top ? 0 : mWindowDecorInsets.top,
right ? 0 : mWindowDecorInsets.right,
bottom ? 0 : mWindowDecorInsets.bottom);
return result;
}
return this;
}
/**
* @hide
*/
public WindowInsets replaceWindowDecorInsets(int left, int top, int right, int bottom) {
final WindowInsets result = new WindowInsets(this);
result.mWindowDecorInsets = new Rect(left, top, right, bottom);
return result;
}
/**
* Returns the top stable inset in pixels.
*
* <p>The stable inset represents the area of a full-screen window that <b>may</b> be
* partially or fully obscured by the system UI elements. This value does not change
* based on the visibility state of those elements; for example, if the status bar is
* normally shown, but temporarily hidden, the stable inset will still provide the inset
* associated with the status bar being shown.</p>
*
* @return The top stable inset
*/
public int getStableInsetTop() {
return mStableInsets.top;
}
/**
* Returns the left stable inset in pixels.
*
* <p>The stable inset represents the area of a full-screen window that <b>may</b> be
* partially or fully obscured by the system UI elements. This value does not change
* based on the visibility state of those elements; for example, if the status bar is
* normally shown, but temporarily hidden, the stable inset will still provide the inset
* associated with the status bar being shown.</p>
*
* @return The left stable inset
*/
public int getStableInsetLeft() {
return mStableInsets.left;
}
/**
* Returns the right stable inset in pixels.
*
* <p>The stable inset represents the area of a full-screen window that <b>may</b> be
* partially or fully obscured by the system UI elements. This value does not change
* based on the visibility state of those elements; for example, if the status bar is
* normally shown, but temporarily hidden, the stable inset will still provide the inset
* associated with the status bar being shown.</p>
*
* @return The right stable inset
*/
public int getStableInsetRight() {
return mStableInsets.right;
}
/**
* Returns the bottom stable inset in pixels.
*
* <p>The stable inset represents the area of a full-screen window that <b>may</b> be
* partially or fully obscured by the system UI elements. This value does not change
* based on the visibility state of those elements; for example, if the status bar is
* normally shown, but temporarily hidden, the stable inset will still provide the inset
* associated with the status bar being shown.</p>
*
* @return The bottom stable inset
*/
public int getStableInsetBottom() {
return mStableInsets.bottom;
}
/**
* Returns true if this WindowInsets has nonzero stable insets.
*
* <p>The stable inset represents the area of a full-screen window that <b>may</b> be
* partially or fully obscured by the system UI elements. This value does not change
* based on the visibility state of those elements; for example, if the status bar is
* normally shown, but temporarily hidden, the stable inset will still provide the inset
* associated with the status bar being shown.</p>
*
* @return true if any of the stable inset values are nonzero
*/
public boolean hasStableInsets() {
return mStableInsets.top != 0 || mStableInsets.left != 0 || mStableInsets.right != 0
|| mStableInsets.bottom != 0;
}
/**
* Returns a copy of this WindowInsets with the stable insets fully consumed.
*
* @return A modified copy of this WindowInsets
*/
public WindowInsets consumeStableInsets() {
final WindowInsets result = new WindowInsets(this);
result.mStableInsets = EMPTY_RECT;
result.mStableInsetsConsumed = true;
return result;
}
@Override
public String toString() {
return "WindowInsets{systemWindowInsets=" + mSystemWindowInsets
+ " windowDecorInsets=" + mWindowDecorInsets
+ " stableInsets=" + mStableInsets +
(isRound() ? " round}" : "}");
}
}
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