| /* |
| * Copyright (C) 2015 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.RecordingCanvas; |
| import android.graphics.Rect; |
| |
| /** |
| * These callbacks are used to communicate window configuration changes while the user is performing |
| * window changes. |
| * Note: Note that at the time of onWindowDragResizeStart the content size isn't known. A consumer |
| * should therfore not draw anything before the additional onContentDraw call has arrived. |
| * @hide |
| */ |
| public interface WindowCallbacks { |
| |
| public static final int RESIZE_MODE_INVALID = -1; |
| public static final int RESIZE_MODE_FREEFORM = 0; |
| public static final int RESIZE_MODE_DOCKED_DIVIDER = 1; |
| |
| /** |
| * Called by the system when the window got changed by the user, before the layouter got called. |
| * It also gets called when the insets changed, or when the window switched between a fullscreen |
| * layout or a non-fullscreen layout. It can be used to perform a "quick and dirty" resize which |
| * should never take more then 4ms to complete. |
| * |
| * <p>At the time the layouting has not happened yet. |
| * |
| * @param newBounds The new window frame bounds. |
| * @param fullscreen Whether the window is currently drawing in fullscreen. |
| * @param systemInsets The current visible system insets for the window. |
| * @param stableInsets The stable insets for the window. |
| */ |
| void onWindowSizeIsChanging(Rect newBounds, boolean fullscreen, Rect systemInsets, |
| Rect stableInsets); |
| |
| /** |
| * Called when a drag resize starts. |
| * |
| * @param initialBounds The initial bounds where the window will be. |
| * @param fullscreen Whether the window is currently drawing in fullscreen. |
| * @param systemInsets The current visible system insets for the window. |
| * @param stableInsets The stable insets for the window. |
| */ |
| void onWindowDragResizeStart(Rect initialBounds, boolean fullscreen, Rect systemInsets, |
| Rect stableInsets, int resizeMode); |
| |
| /** |
| * Called when a drag resize ends. |
| */ |
| void onWindowDragResizeEnd(); |
| |
| /** |
| * The content will now be drawn to these bounds. Returns true if |
| * a draw should be requested after the next content draw. |
| */ |
| boolean onContentDrawn(int offsetX, int offsetY, int sizeX, int sizeY); |
| |
| /** |
| * Called to request the window to draw one frame. |
| * @param reportNextDraw Whether it should report when the requested draw finishes. |
| */ |
| void onRequestDraw(boolean reportNextDraw); |
| |
| /** |
| * Called after all the content has drawn and the callback now has the ability to draw something |
| * on top of everything. Call {@link ViewRootImpl#requestInvalidateRootRenderNode} when this |
| * content needs to be redrawn. |
| * |
| * @param canvas The canvas to draw on. |
| */ |
| void onPostDraw(RecordingCanvas canvas); |
| } |