RenderSessionImpl.java revision 88db0ee2afbae38b53a0527506f0890914a7f115
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.layoutlib.bridge.impl; 18 19import static com.android.ide.common.rendering.api.Result.Status.ERROR_ANIM_NOT_FOUND; 20import static com.android.ide.common.rendering.api.Result.Status.ERROR_INFLATION; 21import static com.android.ide.common.rendering.api.Result.Status.ERROR_NOT_INFLATED; 22import static com.android.ide.common.rendering.api.Result.Status.ERROR_UNKNOWN; 23import static com.android.ide.common.rendering.api.Result.Status.ERROR_VIEWGROUP_NO_CHILDREN; 24import static com.android.ide.common.rendering.api.Result.Status.SUCCESS; 25 26import com.android.ide.common.rendering.api.AdapterBinding; 27import com.android.ide.common.rendering.api.HardwareConfig; 28import com.android.ide.common.rendering.api.IAnimationListener; 29import com.android.ide.common.rendering.api.ILayoutPullParser; 30import com.android.ide.common.rendering.api.IProjectCallback; 31import com.android.ide.common.rendering.api.RenderParams; 32import com.android.ide.common.rendering.api.RenderResources; 33import com.android.ide.common.rendering.api.RenderSession; 34import com.android.ide.common.rendering.api.ResourceReference; 35import com.android.ide.common.rendering.api.ResourceValue; 36import com.android.ide.common.rendering.api.Result; 37import com.android.ide.common.rendering.api.Result.Status; 38import com.android.ide.common.rendering.api.SessionParams; 39import com.android.ide.common.rendering.api.SessionParams.RenderingMode; 40import com.android.ide.common.rendering.api.ViewInfo; 41import com.android.internal.util.XmlUtils; 42import com.android.layoutlib.bridge.Bridge; 43import com.android.layoutlib.bridge.android.BridgeContext; 44import com.android.layoutlib.bridge.android.BridgeLayoutParamsMapAttributes; 45import com.android.layoutlib.bridge.android.BridgeXmlBlockParser; 46import com.android.layoutlib.bridge.bars.FakeActionBar; 47import com.android.layoutlib.bridge.bars.NavigationBar; 48import com.android.layoutlib.bridge.bars.StatusBar; 49import com.android.layoutlib.bridge.bars.TitleBar; 50import com.android.layoutlib.bridge.impl.binding.FakeAdapter; 51import com.android.layoutlib.bridge.impl.binding.FakeExpandableAdapter; 52import com.android.resources.ResourceType; 53import com.android.resources.ScreenOrientation; 54import com.android.util.Pair; 55 56import org.xmlpull.v1.XmlPullParserException; 57 58import android.animation.AnimationThread; 59import android.animation.Animator; 60import android.animation.AnimatorInflater; 61import android.animation.LayoutTransition; 62import android.animation.LayoutTransition.TransitionListener; 63import android.app.Fragment_Delegate; 64import android.graphics.Bitmap; 65import android.graphics.Bitmap_Delegate; 66import android.graphics.Canvas; 67import android.graphics.drawable.Drawable; 68import android.util.DisplayMetrics; 69import android.util.TypedValue; 70import android.view.AttachInfo_Accessor; 71import android.view.BridgeInflater; 72import android.view.IWindowManager; 73import android.view.IWindowManagerImpl; 74import android.view.Surface; 75import android.view.View; 76import android.view.View.MeasureSpec; 77import android.view.ViewGroup; 78import android.view.ViewGroup.LayoutParams; 79import android.view.ViewGroup.MarginLayoutParams; 80import android.view.WindowManagerGlobal_Delegate; 81import android.widget.AbsListView; 82import android.widget.AbsSpinner; 83import android.widget.AdapterView; 84import android.widget.ExpandableListView; 85import android.widget.FrameLayout; 86import android.widget.LinearLayout; 87import android.widget.ListView; 88import android.widget.QuickContactBadge; 89import android.widget.TabHost; 90import android.widget.TabHost.TabSpec; 91import android.widget.TabWidget; 92 93import java.awt.AlphaComposite; 94import java.awt.Color; 95import java.awt.Graphics2D; 96import java.awt.image.BufferedImage; 97import java.util.ArrayList; 98import java.util.List; 99import java.util.Map; 100 101/** 102 * Class implementing the render session. 103 * 104 * A session is a stateful representation of a layout file. It is initialized with data coming 105 * through the {@link Bridge} API to inflate the layout. Further actions and rendering can then 106 * be done on the layout. 107 * 108 */ 109public class RenderSessionImpl extends RenderAction<SessionParams> { 110 111 private static final int DEFAULT_TITLE_BAR_HEIGHT = 25; 112 private static final int DEFAULT_STATUS_BAR_HEIGHT = 25; 113 114 // scene state 115 private RenderSession mScene; 116 private BridgeXmlBlockParser mBlockParser; 117 private BridgeInflater mInflater; 118 private ResourceValue mWindowBackground; 119 private ViewGroup mViewRoot; 120 private FrameLayout mContentRoot; 121 private Canvas mCanvas; 122 private int mMeasuredScreenWidth = -1; 123 private int mMeasuredScreenHeight = -1; 124 private boolean mIsAlphaChannelImage; 125 private boolean mWindowIsFloating; 126 127 private int mStatusBarSize; 128 private int mNavigationBarSize; 129 private int mNavigationBarOrientation = LinearLayout.HORIZONTAL; 130 private int mTitleBarSize; 131 private int mActionBarSize; 132 133 134 // information being returned through the API 135 private BufferedImage mImage; 136 private List<ViewInfo> mViewInfoList; 137 138 private static final class PostInflateException extends Exception { 139 private static final long serialVersionUID = 1L; 140 141 public PostInflateException(String message) { 142 super(message); 143 } 144 } 145 146 /** 147 * Creates a layout scene with all the information coming from the layout bridge API. 148 * <p> 149 * This <b>must</b> be followed by a call to {@link RenderSessionImpl#init()}, which act as a 150 * call to {@link RenderSessionImpl#acquire(long)} 151 * 152 * @see LayoutBridge#createScene(com.android.layoutlib.api.SceneParams) 153 */ 154 public RenderSessionImpl(SessionParams params) { 155 super(new SessionParams(params)); 156 } 157 158 /** 159 * Initializes and acquires the scene, creating various Android objects such as context, 160 * inflater, and parser. 161 * 162 * @param timeout the time to wait if another rendering is happening. 163 * 164 * @return whether the scene was prepared 165 * 166 * @see #acquire(long) 167 * @see #release() 168 */ 169 @Override 170 public Result init(long timeout) { 171 Result result = super.init(timeout); 172 if (result.isSuccess() == false) { 173 return result; 174 } 175 176 SessionParams params = getParams(); 177 BridgeContext context = getContext(); 178 179 RenderResources resources = getParams().getResources(); 180 DisplayMetrics metrics = getContext().getMetrics(); 181 182 // use default of true in case it's not found to use alpha by default 183 mIsAlphaChannelImage = getBooleanThemeValue(resources, 184 "windowIsFloating", true /*defaultValue*/); 185 186 mWindowIsFloating = getBooleanThemeValue(resources, "windowIsFloating", 187 true /*defaultValue*/); 188 189 findBackground(resources); 190 findStatusBar(resources, metrics); 191 findActionBar(resources, metrics); 192 findNavigationBar(resources, metrics); 193 194 // FIXME: find those out, and possibly add them to the render params 195 boolean hasSystemNavBar = true; 196 boolean hasNavigationBar = true; 197 IWindowManager iwm = new IWindowManagerImpl(getContext().getConfiguration(), 198 metrics, Surface.ROTATION_0, 199 hasSystemNavBar, hasNavigationBar); 200 WindowManagerGlobal_Delegate.setWindowManagerService(iwm); 201 202 // build the inflater and parser. 203 mInflater = new BridgeInflater(context, params.getProjectCallback()); 204 context.setBridgeInflater(mInflater); 205 206 mBlockParser = new BridgeXmlBlockParser( 207 params.getLayoutDescription(), context, false /* platformResourceFlag */); 208 209 return SUCCESS.createResult(); 210 } 211 212 /** 213 * Inflates the layout. 214 * <p> 215 * {@link #acquire(long)} must have been called before this. 216 * 217 * @throws IllegalStateException if the current context is different than the one owned by 218 * the scene, or if {@link #init(long)} was not called. 219 */ 220 public Result inflate() { 221 checkLock(); 222 223 try { 224 225 SessionParams params = getParams(); 226 HardwareConfig hardwareConfig = params.getHardwareConfig(); 227 BridgeContext context = getContext(); 228 boolean isRtl = Bridge.isLocaleRtl(params.getLocale()); 229 int direction = isRtl ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR; 230 231 // the view group that receives the window background. 232 ViewGroup backgroundView = null; 233 234 if (mWindowIsFloating || params.isForceNoDecor()) { 235 backgroundView = mViewRoot = mContentRoot = new FrameLayout(context); 236 mViewRoot.setLayoutDirection(direction); 237 } else { 238 if (hasSoftwareButtons() && mNavigationBarOrientation == LinearLayout.VERTICAL) { 239 /* 240 * This is a special case where the navigation bar is on the right. 241 +-------------------------------------------------+---+ 242 | Status bar (always) | | 243 +-------------------------------------------------+ | 244 | (Layout with background drawable) | | 245 | +---------------------------------------------+ | | 246 | | Title/Action bar (optional) | | | 247 | +---------------------------------------------+ | | 248 | | Content, vertical extending | | | 249 | | | | | 250 | +---------------------------------------------+ | | 251 +-------------------------------------------------+---+ 252 253 So we create a horizontal layout, with the nav bar on the right, 254 and the left part is the normal layout below without the nav bar at 255 the bottom 256 */ 257 LinearLayout topLayout = new LinearLayout(context); 258 topLayout.setLayoutDirection(direction); 259 mViewRoot = topLayout; 260 topLayout.setOrientation(LinearLayout.HORIZONTAL); 261 262 try { 263 NavigationBar navigationBar = new NavigationBar(context, 264 hardwareConfig.getDensity(), LinearLayout.VERTICAL, isRtl, 265 params.isRtlSupported()); 266 navigationBar.setLayoutParams( 267 new LinearLayout.LayoutParams( 268 mNavigationBarSize, 269 LayoutParams.MATCH_PARENT)); 270 topLayout.addView(navigationBar); 271 } catch (XmlPullParserException e) { 272 273 } 274 } 275 276 /* 277 * we're creating the following layout 278 * 279 +-------------------------------------------------+ 280 | Status bar (always) | 281 +-------------------------------------------------+ 282 | (Layout with background drawable) | 283 | +---------------------------------------------+ | 284 | | Title/Action bar (optional) | | 285 | +---------------------------------------------+ | 286 | | Content, vertical extending | | 287 | | | | 288 | +---------------------------------------------+ | 289 +-------------------------------------------------+ 290 | Navigation bar for soft buttons, maybe see above| 291 +-------------------------------------------------+ 292 293 */ 294 295 LinearLayout topLayout = new LinearLayout(context); 296 topLayout.setOrientation(LinearLayout.VERTICAL); 297 topLayout.setLayoutDirection(direction); 298 // if we don't already have a view root this is it 299 if (mViewRoot == null) { 300 mViewRoot = topLayout; 301 } else { 302 LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( 303 LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); 304 layoutParams.weight = 1; 305 topLayout.setLayoutParams(layoutParams); 306 307 // this is the case of soft buttons + vertical bar. 308 // this top layout is the first layout in the horizontal layout. see above) 309 if (isRtl && params.isRtlSupported()) { 310 // If RTL is enabled, layoutlib will mirror the layouts. So, add the 311 // topLayout to the right of Navigation Bar and layoutlib will draw it 312 // to the left. 313 mViewRoot.addView(topLayout); 314 } else { 315 // Add the top layout to the left of the Navigation Bar. 316 mViewRoot.addView(topLayout, 0); 317 } 318 } 319 320 if (mStatusBarSize > 0) { 321 // system bar 322 try { 323 StatusBar systemBar = new StatusBar(context, hardwareConfig.getDensity(), 324 direction, params.isRtlSupported()); 325 systemBar.setLayoutParams( 326 new LinearLayout.LayoutParams( 327 LayoutParams.MATCH_PARENT, mStatusBarSize)); 328 topLayout.addView(systemBar); 329 } catch (XmlPullParserException e) { 330 331 } 332 } 333 334 LinearLayout backgroundLayout = new LinearLayout(context); 335 backgroundView = backgroundLayout; 336 backgroundLayout.setOrientation(LinearLayout.VERTICAL); 337 LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( 338 LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 339 layoutParams.weight = 1; 340 backgroundLayout.setLayoutParams(layoutParams); 341 topLayout.addView(backgroundLayout); 342 343 344 // if the theme says no title/action bar, then the size will be 0 345 if (mActionBarSize > 0) { 346 try { 347 FakeActionBar actionBar = new FakeActionBar(context, 348 hardwareConfig.getDensity(), 349 params.getAppLabel(), params.getAppIcon()); 350 actionBar.setLayoutParams( 351 new LinearLayout.LayoutParams( 352 LayoutParams.MATCH_PARENT, mActionBarSize)); 353 backgroundLayout.addView(actionBar); 354 } catch (XmlPullParserException e) { 355 356 } 357 } else if (mTitleBarSize > 0) { 358 try { 359 TitleBar titleBar = new TitleBar(context, 360 hardwareConfig.getDensity(), params.getAppLabel()); 361 titleBar.setLayoutParams( 362 new LinearLayout.LayoutParams( 363 LayoutParams.MATCH_PARENT, mTitleBarSize)); 364 backgroundLayout.addView(titleBar); 365 } catch (XmlPullParserException e) { 366 367 } 368 } 369 370 // content frame 371 mContentRoot = new FrameLayout(context); 372 layoutParams = new LinearLayout.LayoutParams( 373 LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 374 layoutParams.weight = 1; 375 mContentRoot.setLayoutParams(layoutParams); 376 backgroundLayout.addView(mContentRoot); 377 378 if (mNavigationBarOrientation == LinearLayout.HORIZONTAL && 379 mNavigationBarSize > 0) { 380 // system bar 381 try { 382 NavigationBar navigationBar = new NavigationBar(context, 383 hardwareConfig.getDensity(), LinearLayout.HORIZONTAL, isRtl, 384 params.isRtlSupported()); 385 navigationBar.setLayoutParams( 386 new LinearLayout.LayoutParams( 387 LayoutParams.MATCH_PARENT, mNavigationBarSize)); 388 topLayout.addView(navigationBar); 389 } catch (XmlPullParserException e) { 390 391 } 392 } 393 } 394 395 396 // Sets the project callback (custom view loader) to the fragment delegate so that 397 // it can instantiate the custom Fragment. 398 Fragment_Delegate.setProjectCallback(params.getProjectCallback()); 399 400 View view = mInflater.inflate(mBlockParser, mContentRoot); 401 402 // done with the parser, pop it. 403 context.popParser(); 404 405 Fragment_Delegate.setProjectCallback(null); 406 407 // set the AttachInfo on the root view. 408 AttachInfo_Accessor.setAttachInfo(mViewRoot); 409 410 // post-inflate process. For now this supports TabHost/TabWidget 411 postInflateProcess(view, params.getProjectCallback()); 412 413 // get the background drawable 414 if (mWindowBackground != null && backgroundView != null) { 415 Drawable d = ResourceHelper.getDrawable(mWindowBackground, context); 416 backgroundView.setBackground(d); 417 } 418 419 return SUCCESS.createResult(); 420 } catch (PostInflateException e) { 421 return ERROR_INFLATION.createResult(e.getMessage(), e); 422 } catch (Throwable e) { 423 // get the real cause of the exception. 424 Throwable t = e; 425 while (t.getCause() != null) { 426 t = t.getCause(); 427 } 428 429 return ERROR_INFLATION.createResult(t.getMessage(), t); 430 } 431 } 432 433 /** 434 * Renders the scene. 435 * <p> 436 * {@link #acquire(long)} must have been called before this. 437 * 438 * @param freshRender whether the render is a new one and should erase the existing bitmap (in 439 * the case where bitmaps are reused). This is typically needed when not playing 440 * animations.) 441 * 442 * @throws IllegalStateException if the current context is different than the one owned by 443 * the scene, or if {@link #acquire(long)} was not called. 444 * 445 * @see RenderParams#getRenderingMode() 446 * @see RenderSession#render(long) 447 */ 448 public Result render(boolean freshRender) { 449 checkLock(); 450 451 SessionParams params = getParams(); 452 453 try { 454 if (mViewRoot == null) { 455 return ERROR_NOT_INFLATED.createResult(); 456 } 457 458 RenderingMode renderingMode = params.getRenderingMode(); 459 HardwareConfig hardwareConfig = params.getHardwareConfig(); 460 461 // only do the screen measure when needed. 462 boolean newRenderSize = false; 463 if (mMeasuredScreenWidth == -1) { 464 newRenderSize = true; 465 mMeasuredScreenWidth = hardwareConfig.getScreenWidth(); 466 mMeasuredScreenHeight = hardwareConfig.getScreenHeight(); 467 468 if (renderingMode != RenderingMode.NORMAL) { 469 int widthMeasureSpecMode = renderingMode.isHorizExpand() ? 470 MeasureSpec.UNSPECIFIED // this lets us know the actual needed size 471 : MeasureSpec.EXACTLY; 472 int heightMeasureSpecMode = renderingMode.isVertExpand() ? 473 MeasureSpec.UNSPECIFIED // this lets us know the actual needed size 474 : MeasureSpec.EXACTLY; 475 476 // We used to compare the measured size of the content to the screen size but 477 // this does not work anymore due to the 2 following issues: 478 // - If the content is in a decor (system bar, title/action bar), the root view 479 // will not resize even with the UNSPECIFIED because of the embedded layout. 480 // - If there is no decor, but a dialog frame, then the dialog padding prevents 481 // comparing the size of the content to the screen frame (as it would not 482 // take into account the dialog padding). 483 484 // The solution is to first get the content size in a normal rendering, inside 485 // the decor or the dialog padding. 486 // Then measure only the content with UNSPECIFIED to see the size difference 487 // and apply this to the screen size. 488 489 // first measure the full layout, with EXACTLY to get the size of the 490 // content as it is inside the decor/dialog 491 Pair<Integer, Integer> exactMeasure = measureView( 492 mViewRoot, mContentRoot.getChildAt(0), 493 mMeasuredScreenWidth, MeasureSpec.EXACTLY, 494 mMeasuredScreenHeight, MeasureSpec.EXACTLY); 495 496 // now measure the content only using UNSPECIFIED (where applicable, based on 497 // the rendering mode). This will give us the size the content needs. 498 Pair<Integer, Integer> result = measureView( 499 mContentRoot, mContentRoot.getChildAt(0), 500 mMeasuredScreenWidth, widthMeasureSpecMode, 501 mMeasuredScreenHeight, heightMeasureSpecMode); 502 503 // now look at the difference and add what is needed. 504 if (renderingMode.isHorizExpand()) { 505 int measuredWidth = exactMeasure.getFirst(); 506 int neededWidth = result.getFirst(); 507 if (neededWidth > measuredWidth) { 508 mMeasuredScreenWidth += neededWidth - measuredWidth; 509 } 510 } 511 512 if (renderingMode.isVertExpand()) { 513 int measuredHeight = exactMeasure.getSecond(); 514 int neededHeight = result.getSecond(); 515 if (neededHeight > measuredHeight) { 516 mMeasuredScreenHeight += neededHeight - measuredHeight; 517 } 518 } 519 } 520 } 521 522 // measure again with the size we need 523 // This must always be done before the call to layout 524 measureView(mViewRoot, null /*measuredView*/, 525 mMeasuredScreenWidth, MeasureSpec.EXACTLY, 526 mMeasuredScreenHeight, MeasureSpec.EXACTLY); 527 528 // now do the layout. 529 mViewRoot.layout(0, 0, mMeasuredScreenWidth, mMeasuredScreenHeight); 530 531 if (params.isLayoutOnly()) { 532 // delete the canvas and image to reset them on the next full rendering 533 mImage = null; 534 mCanvas = null; 535 } else { 536 AttachInfo_Accessor.dispatchOnPreDraw(mViewRoot); 537 538 // draw the views 539 // create the BufferedImage into which the layout will be rendered. 540 boolean newImage = false; 541 if (newRenderSize || mCanvas == null) { 542 if (params.getImageFactory() != null) { 543 mImage = params.getImageFactory().getImage( 544 mMeasuredScreenWidth, 545 mMeasuredScreenHeight); 546 } else { 547 mImage = new BufferedImage( 548 mMeasuredScreenWidth, 549 mMeasuredScreenHeight, 550 BufferedImage.TYPE_INT_ARGB); 551 newImage = true; 552 } 553 554 if (params.isBgColorOverridden()) { 555 // since we override the content, it's the same as if it was a new image. 556 newImage = true; 557 Graphics2D gc = mImage.createGraphics(); 558 gc.setColor(new Color(params.getOverrideBgColor(), true)); 559 gc.setComposite(AlphaComposite.Src); 560 gc.fillRect(0, 0, mMeasuredScreenWidth, mMeasuredScreenHeight); 561 gc.dispose(); 562 } 563 564 // create an Android bitmap around the BufferedImage 565 Bitmap bitmap = Bitmap_Delegate.createBitmap(mImage, 566 true /*isMutable*/, hardwareConfig.getDensity()); 567 568 // create a Canvas around the Android bitmap 569 mCanvas = new Canvas(bitmap); 570 mCanvas.setDensity(hardwareConfig.getDensity().getDpiValue()); 571 } 572 573 if (freshRender && newImage == false) { 574 Graphics2D gc = mImage.createGraphics(); 575 gc.setComposite(AlphaComposite.Src); 576 577 gc.setColor(new Color(0x00000000, true)); 578 gc.fillRect(0, 0, 579 mMeasuredScreenWidth, mMeasuredScreenHeight); 580 581 // done 582 gc.dispose(); 583 } 584 585 mViewRoot.draw(mCanvas); 586 } 587 588 mViewInfoList = startVisitingViews(mViewRoot, 0, params.getExtendedViewInfoMode()); 589 590 // success! 591 return SUCCESS.createResult(); 592 } catch (Throwable e) { 593 // get the real cause of the exception. 594 Throwable t = e; 595 while (t.getCause() != null) { 596 t = t.getCause(); 597 } 598 599 return ERROR_UNKNOWN.createResult(t.getMessage(), t); 600 } 601 } 602 603 /** 604 * Executes {@link View#measure(int, int)} on a given view with the given parameters (used 605 * to create measure specs with {@link MeasureSpec#makeMeasureSpec(int, int)}. 606 * 607 * if <var>measuredView</var> is non null, the method returns a {@link Pair} of (width, height) 608 * for the view (using {@link View#getMeasuredWidth()} and {@link View#getMeasuredHeight()}). 609 * 610 * @param viewToMeasure the view on which to execute measure(). 611 * @param measuredView if non null, the view to query for its measured width/height. 612 * @param width the width to use in the MeasureSpec. 613 * @param widthMode the MeasureSpec mode to use for the width. 614 * @param height the height to use in the MeasureSpec. 615 * @param heightMode the MeasureSpec mode to use for the height. 616 * @return the measured width/height if measuredView is non-null, null otherwise. 617 */ 618 private Pair<Integer, Integer> measureView(ViewGroup viewToMeasure, View measuredView, 619 int width, int widthMode, int height, int heightMode) { 620 int w_spec = MeasureSpec.makeMeasureSpec(width, widthMode); 621 int h_spec = MeasureSpec.makeMeasureSpec(height, heightMode); 622 viewToMeasure.measure(w_spec, h_spec); 623 624 if (measuredView != null) { 625 return Pair.of(measuredView.getMeasuredWidth(), measuredView.getMeasuredHeight()); 626 } 627 628 return null; 629 } 630 631 /** 632 * Animate an object 633 * <p> 634 * {@link #acquire(long)} must have been called before this. 635 * 636 * @throws IllegalStateException if the current context is different than the one owned by 637 * the scene, or if {@link #acquire(long)} was not called. 638 * 639 * @see RenderSession#animate(Object, String, boolean, IAnimationListener) 640 */ 641 public Result animate(Object targetObject, String animationName, 642 boolean isFrameworkAnimation, IAnimationListener listener) { 643 checkLock(); 644 645 BridgeContext context = getContext(); 646 647 // find the animation file. 648 ResourceValue animationResource = null; 649 int animationId = 0; 650 if (isFrameworkAnimation) { 651 animationResource = context.getRenderResources().getFrameworkResource( 652 ResourceType.ANIMATOR, animationName); 653 if (animationResource != null) { 654 animationId = Bridge.getResourceId(ResourceType.ANIMATOR, animationName); 655 } 656 } else { 657 animationResource = context.getRenderResources().getProjectResource( 658 ResourceType.ANIMATOR, animationName); 659 if (animationResource != null) { 660 animationId = context.getProjectCallback().getResourceId( 661 ResourceType.ANIMATOR, animationName); 662 } 663 } 664 665 if (animationResource != null) { 666 try { 667 Animator anim = AnimatorInflater.loadAnimator(context, animationId); 668 if (anim != null) { 669 anim.setTarget(targetObject); 670 671 new PlayAnimationThread(anim, this, animationName, listener).start(); 672 673 return SUCCESS.createResult(); 674 } 675 } catch (Exception e) { 676 // get the real cause of the exception. 677 Throwable t = e; 678 while (t.getCause() != null) { 679 t = t.getCause(); 680 } 681 682 return ERROR_UNKNOWN.createResult(t.getMessage(), t); 683 } 684 } 685 686 return ERROR_ANIM_NOT_FOUND.createResult(); 687 } 688 689 /** 690 * Insert a new child into an existing parent. 691 * <p> 692 * {@link #acquire(long)} must have been called before this. 693 * 694 * @throws IllegalStateException if the current context is different than the one owned by 695 * the scene, or if {@link #acquire(long)} was not called. 696 * 697 * @see RenderSession#insertChild(Object, ILayoutPullParser, int, IAnimationListener) 698 */ 699 public Result insertChild(final ViewGroup parentView, ILayoutPullParser childXml, 700 final int index, IAnimationListener listener) { 701 checkLock(); 702 703 BridgeContext context = getContext(); 704 705 // create a block parser for the XML 706 BridgeXmlBlockParser blockParser = new BridgeXmlBlockParser( 707 childXml, context, false /* platformResourceFlag */); 708 709 // inflate the child without adding it to the root since we want to control where it'll 710 // get added. We do pass the parentView however to ensure that the layoutParams will 711 // be created correctly. 712 final View child = mInflater.inflate(blockParser, parentView, false /*attachToRoot*/); 713 blockParser.ensurePopped(); 714 715 invalidateRenderingSize(); 716 717 if (listener != null) { 718 new AnimationThread(this, "insertChild", listener) { 719 720 @Override 721 public Result preAnimation() { 722 parentView.setLayoutTransition(new LayoutTransition()); 723 return addView(parentView, child, index); 724 } 725 726 @Override 727 public void postAnimation() { 728 parentView.setLayoutTransition(null); 729 } 730 }.start(); 731 732 // always return success since the real status will come through the listener. 733 return SUCCESS.createResult(child); 734 } 735 736 // add it to the parentView in the correct location 737 Result result = addView(parentView, child, index); 738 if (result.isSuccess() == false) { 739 return result; 740 } 741 742 result = render(false /*freshRender*/); 743 if (result.isSuccess()) { 744 result = result.getCopyWithData(child); 745 } 746 747 return result; 748 } 749 750 /** 751 * Adds a given view to a given parent at a given index. 752 * 753 * @param parent the parent to receive the view 754 * @param view the view to add to the parent 755 * @param index the index where to do the add. 756 * 757 * @return a Result with {@link Status#SUCCESS} or 758 * {@link Status#ERROR_VIEWGROUP_NO_CHILDREN} if the given parent doesn't support 759 * adding views. 760 */ 761 private Result addView(ViewGroup parent, View view, int index) { 762 try { 763 parent.addView(view, index); 764 return SUCCESS.createResult(); 765 } catch (UnsupportedOperationException e) { 766 // looks like this is a view class that doesn't support children manipulation! 767 return ERROR_VIEWGROUP_NO_CHILDREN.createResult(); 768 } 769 } 770 771 /** 772 * Moves a view to a new parent at a given location 773 * <p> 774 * {@link #acquire(long)} must have been called before this. 775 * 776 * @throws IllegalStateException if the current context is different than the one owned by 777 * the scene, or if {@link #acquire(long)} was not called. 778 * 779 * @see RenderSession#moveChild(Object, Object, int, Map, IAnimationListener) 780 */ 781 public Result moveChild(final ViewGroup newParentView, final View childView, final int index, 782 Map<String, String> layoutParamsMap, final IAnimationListener listener) { 783 checkLock(); 784 785 invalidateRenderingSize(); 786 787 LayoutParams layoutParams = null; 788 if (layoutParamsMap != null) { 789 // need to create a new LayoutParams object for the new parent. 790 layoutParams = newParentView.generateLayoutParams( 791 new BridgeLayoutParamsMapAttributes(layoutParamsMap)); 792 } 793 794 // get the current parent of the view that needs to be moved. 795 final ViewGroup previousParent = (ViewGroup) childView.getParent(); 796 797 if (listener != null) { 798 final LayoutParams params = layoutParams; 799 800 // there is no support for animating views across layouts, so in case the new and old 801 // parent views are different we fake the animation through a no animation thread. 802 if (previousParent != newParentView) { 803 new Thread("not animated moveChild") { 804 @Override 805 public void run() { 806 Result result = moveView(previousParent, newParentView, childView, index, 807 params); 808 if (result.isSuccess() == false) { 809 listener.done(result); 810 } 811 812 // ready to do the work, acquire the scene. 813 result = acquire(250); 814 if (result.isSuccess() == false) { 815 listener.done(result); 816 return; 817 } 818 819 try { 820 result = render(false /*freshRender*/); 821 if (result.isSuccess()) { 822 listener.onNewFrame(RenderSessionImpl.this.getSession()); 823 } 824 } finally { 825 release(); 826 } 827 828 listener.done(result); 829 } 830 }.start(); 831 } else { 832 new AnimationThread(this, "moveChild", listener) { 833 834 @Override 835 public Result preAnimation() { 836 // set up the transition for the parent. 837 LayoutTransition transition = new LayoutTransition(); 838 previousParent.setLayoutTransition(transition); 839 840 // tweak the animation durations and start delays (to match the duration of 841 // animation playing just before). 842 // Note: Cannot user Animation.setDuration() directly. Have to set it 843 // on the LayoutTransition. 844 transition.setDuration(LayoutTransition.DISAPPEARING, 100); 845 // CHANGE_DISAPPEARING plays after DISAPPEARING 846 transition.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 100); 847 848 transition.setDuration(LayoutTransition.CHANGE_DISAPPEARING, 100); 849 850 transition.setDuration(LayoutTransition.CHANGE_APPEARING, 100); 851 // CHANGE_APPEARING plays after CHANGE_APPEARING 852 transition.setStartDelay(LayoutTransition.APPEARING, 100); 853 854 transition.setDuration(LayoutTransition.APPEARING, 100); 855 856 return moveView(previousParent, newParentView, childView, index, params); 857 } 858 859 @Override 860 public void postAnimation() { 861 previousParent.setLayoutTransition(null); 862 newParentView.setLayoutTransition(null); 863 } 864 }.start(); 865 } 866 867 // always return success since the real status will come through the listener. 868 return SUCCESS.createResult(layoutParams); 869 } 870 871 Result result = moveView(previousParent, newParentView, childView, index, layoutParams); 872 if (result.isSuccess() == false) { 873 return result; 874 } 875 876 result = render(false /*freshRender*/); 877 if (layoutParams != null && result.isSuccess()) { 878 result = result.getCopyWithData(layoutParams); 879 } 880 881 return result; 882 } 883 884 /** 885 * Moves a View from its current parent to a new given parent at a new given location, with 886 * an optional new {@link LayoutParams} instance 887 * 888 * @param previousParent the previous parent, still owning the child at the time of the call. 889 * @param newParent the new parent 890 * @param movedView the view to move 891 * @param index the new location in the new parent 892 * @param params an option (can be null) {@link LayoutParams} instance. 893 * 894 * @return a Result with {@link Status#SUCCESS} or 895 * {@link Status#ERROR_VIEWGROUP_NO_CHILDREN} if the given parent doesn't support 896 * adding views. 897 */ 898 private Result moveView(ViewGroup previousParent, final ViewGroup newParent, 899 final View movedView, final int index, final LayoutParams params) { 900 try { 901 // check if there is a transition on the previousParent. 902 LayoutTransition previousTransition = previousParent.getLayoutTransition(); 903 if (previousTransition != null) { 904 // in this case there is an animation. This means we have to wait for the child's 905 // parent reference to be null'ed out so that we can add it to the new parent. 906 // It is technically removed right before the DISAPPEARING animation is done (if 907 // the animation of this type is not null, otherwise it's after which is impossible 908 // to handle). 909 // Because there is no move animation, if the new parent is the same as the old 910 // parent, we need to wait until the CHANGE_DISAPPEARING animation is done before 911 // adding the child or the child will appear in its new location before the 912 // other children have made room for it. 913 914 // add a listener to the transition to be notified of the actual removal. 915 previousTransition.addTransitionListener(new TransitionListener() { 916 private int mChangeDisappearingCount = 0; 917 918 @Override 919 public void startTransition(LayoutTransition transition, ViewGroup container, 920 View view, int transitionType) { 921 if (transitionType == LayoutTransition.CHANGE_DISAPPEARING) { 922 mChangeDisappearingCount++; 923 } 924 } 925 926 @Override 927 public void endTransition(LayoutTransition transition, ViewGroup container, 928 View view, int transitionType) { 929 if (transitionType == LayoutTransition.CHANGE_DISAPPEARING) { 930 mChangeDisappearingCount--; 931 } 932 933 if (transitionType == LayoutTransition.CHANGE_DISAPPEARING && 934 mChangeDisappearingCount == 0) { 935 // add it to the parentView in the correct location 936 if (params != null) { 937 newParent.addView(movedView, index, params); 938 } else { 939 newParent.addView(movedView, index); 940 } 941 } 942 } 943 }); 944 945 // remove the view from the current parent. 946 previousParent.removeView(movedView); 947 948 // and return since adding the view to the new parent is done in the listener. 949 return SUCCESS.createResult(); 950 } else { 951 // standard code with no animation. pretty simple. 952 previousParent.removeView(movedView); 953 954 // add it to the parentView in the correct location 955 if (params != null) { 956 newParent.addView(movedView, index, params); 957 } else { 958 newParent.addView(movedView, index); 959 } 960 961 return SUCCESS.createResult(); 962 } 963 } catch (UnsupportedOperationException e) { 964 // looks like this is a view class that doesn't support children manipulation! 965 return ERROR_VIEWGROUP_NO_CHILDREN.createResult(); 966 } 967 } 968 969 /** 970 * Removes a child from its current parent. 971 * <p> 972 * {@link #acquire(long)} must have been called before this. 973 * 974 * @throws IllegalStateException if the current context is different than the one owned by 975 * the scene, or if {@link #acquire(long)} was not called. 976 * 977 * @see RenderSession#removeChild(Object, IAnimationListener) 978 */ 979 public Result removeChild(final View childView, IAnimationListener listener) { 980 checkLock(); 981 982 invalidateRenderingSize(); 983 984 final ViewGroup parent = (ViewGroup) childView.getParent(); 985 986 if (listener != null) { 987 new AnimationThread(this, "moveChild", listener) { 988 989 @Override 990 public Result preAnimation() { 991 parent.setLayoutTransition(new LayoutTransition()); 992 return removeView(parent, childView); 993 } 994 995 @Override 996 public void postAnimation() { 997 parent.setLayoutTransition(null); 998 } 999 }.start(); 1000 1001 // always return success since the real status will come through the listener. 1002 return SUCCESS.createResult(); 1003 } 1004 1005 Result result = removeView(parent, childView); 1006 if (result.isSuccess() == false) { 1007 return result; 1008 } 1009 1010 return render(false /*freshRender*/); 1011 } 1012 1013 /** 1014 * Removes a given view from its current parent. 1015 * 1016 * @param view the view to remove from its parent 1017 * 1018 * @return a Result with {@link Status#SUCCESS} or 1019 * {@link Status#ERROR_VIEWGROUP_NO_CHILDREN} if the given parent doesn't support 1020 * adding views. 1021 */ 1022 private Result removeView(ViewGroup parent, View view) { 1023 try { 1024 parent.removeView(view); 1025 return SUCCESS.createResult(); 1026 } catch (UnsupportedOperationException e) { 1027 // looks like this is a view class that doesn't support children manipulation! 1028 return ERROR_VIEWGROUP_NO_CHILDREN.createResult(); 1029 } 1030 } 1031 1032 1033 private void findBackground(RenderResources resources) { 1034 if (getParams().isBgColorOverridden() == false) { 1035 mWindowBackground = resources.findItemInTheme("windowBackground", 1036 true /*isFrameworkAttr*/); 1037 if (mWindowBackground != null) { 1038 mWindowBackground = resources.resolveResValue(mWindowBackground); 1039 } 1040 } 1041 } 1042 1043 private boolean hasSoftwareButtons() { 1044 return getParams().getHardwareConfig().hasSoftwareButtons(); 1045 } 1046 1047 private void findStatusBar(RenderResources resources, DisplayMetrics metrics) { 1048 boolean windowFullscreen = getBooleanThemeValue(resources, 1049 "windowFullscreen", false /*defaultValue*/); 1050 1051 if (windowFullscreen == false && mWindowIsFloating == false) { 1052 // default value 1053 mStatusBarSize = DEFAULT_STATUS_BAR_HEIGHT; 1054 1055 // get the real value 1056 ResourceValue value = resources.getFrameworkResource(ResourceType.DIMEN, 1057 "status_bar_height"); 1058 1059 if (value != null) { 1060 TypedValue typedValue = ResourceHelper.getValue("status_bar_height", 1061 value.getValue(), true /*requireUnit*/); 1062 if (typedValue != null) { 1063 // compute the pixel value based on the display metrics 1064 mStatusBarSize = (int)typedValue.getDimension(metrics); 1065 } 1066 } 1067 } 1068 } 1069 1070 private void findActionBar(RenderResources resources, DisplayMetrics metrics) { 1071 if (mWindowIsFloating) { 1072 return; 1073 } 1074 1075 boolean windowActionBar = getBooleanThemeValue(resources, 1076 "windowActionBar", true /*defaultValue*/); 1077 1078 // if there's a value and it's false (default is true) 1079 if (windowActionBar) { 1080 1081 // default size of the window title bar 1082 mActionBarSize = DEFAULT_TITLE_BAR_HEIGHT; 1083 1084 // get value from the theme. 1085 ResourceValue value = resources.findItemInTheme("actionBarSize", 1086 true /*isFrameworkAttr*/); 1087 1088 // resolve it 1089 value = resources.resolveResValue(value); 1090 1091 if (value != null) { 1092 // get the numerical value, if available 1093 TypedValue typedValue = ResourceHelper.getValue("actionBarSize", value.getValue(), 1094 true /*requireUnit*/); 1095 if (typedValue != null) { 1096 // compute the pixel value based on the display metrics 1097 mActionBarSize = (int)typedValue.getDimension(metrics); 1098 } 1099 } 1100 } else { 1101 // action bar overrides title bar so only look for this one if action bar is hidden 1102 boolean windowNoTitle = getBooleanThemeValue(resources, 1103 "windowNoTitle", false /*defaultValue*/); 1104 1105 if (windowNoTitle == false) { 1106 1107 // default size of the window title bar 1108 mTitleBarSize = DEFAULT_TITLE_BAR_HEIGHT; 1109 1110 // get value from the theme. 1111 ResourceValue value = resources.findItemInTheme("windowTitleSize", 1112 true /*isFrameworkAttr*/); 1113 1114 // resolve it 1115 value = resources.resolveResValue(value); 1116 1117 if (value != null) { 1118 // get the numerical value, if available 1119 TypedValue typedValue = ResourceHelper.getValue("windowTitleSize", 1120 value.getValue(), true /*requireUnit*/); 1121 if (typedValue != null) { 1122 // compute the pixel value based on the display metrics 1123 mTitleBarSize = (int)typedValue.getDimension(metrics); 1124 } 1125 } 1126 } 1127 1128 } 1129 } 1130 1131 private void findNavigationBar(RenderResources resources, DisplayMetrics metrics) { 1132 if (hasSoftwareButtons() && mWindowIsFloating == false) { 1133 1134 // default value 1135 mNavigationBarSize = 48; // ?? 1136 1137 HardwareConfig hardwareConfig = getParams().getHardwareConfig(); 1138 1139 boolean barOnBottom = true; 1140 1141 if (hardwareConfig.getOrientation() == ScreenOrientation.LANDSCAPE) { 1142 // compute the dp of the screen. 1143 int shortSize = hardwareConfig.getScreenHeight(); 1144 1145 // compute in dp 1146 int shortSizeDp = shortSize * DisplayMetrics.DENSITY_DEFAULT / hardwareConfig.getDensity().getDpiValue(); 1147 1148 if (shortSizeDp < 600) { 1149 // 0-599dp: "phone" UI with bar on the side 1150 barOnBottom = false; 1151 } else { 1152 // 600+dp: "tablet" UI with bar on the bottom 1153 barOnBottom = true; 1154 } 1155 } 1156 1157 if (barOnBottom) { 1158 mNavigationBarOrientation = LinearLayout.HORIZONTAL; 1159 } else { 1160 mNavigationBarOrientation = LinearLayout.VERTICAL; 1161 } 1162 1163 // get the real value 1164 ResourceValue value = resources.getFrameworkResource(ResourceType.DIMEN, 1165 barOnBottom ? "navigation_bar_height" : "navigation_bar_width"); 1166 1167 if (value != null) { 1168 TypedValue typedValue = ResourceHelper.getValue("navigation_bar_height", 1169 value.getValue(), true /*requireUnit*/); 1170 if (typedValue != null) { 1171 // compute the pixel value based on the display metrics 1172 mNavigationBarSize = (int)typedValue.getDimension(metrics); 1173 } 1174 } 1175 } 1176 } 1177 1178 /** 1179 * Looks for a attribute in the current theme. The attribute is in the android 1180 * namespace. 1181 * 1182 * @param resources the render resources 1183 * @param name the name of the attribute 1184 * @param defaultValue the default value. 1185 * @return the value of the attribute or the default one if not found. 1186 */ 1187 private boolean getBooleanThemeValue(RenderResources resources, 1188 String name, boolean defaultValue) { 1189 1190 // get the title bar flag from the current theme. 1191 ResourceValue value = resources.findItemInTheme(name, true /*isFrameworkAttr*/); 1192 1193 // because it may reference something else, we resolve it. 1194 value = resources.resolveResValue(value); 1195 1196 // if there's no value, return the default. 1197 if (value == null || value.getValue() == null) { 1198 return defaultValue; 1199 } 1200 1201 return XmlUtils.convertValueToBoolean(value.getValue(), defaultValue); 1202 } 1203 1204 /** 1205 * Post process on a view hierachy that was just inflated. 1206 * <p/>At the moment this only support TabHost: If {@link TabHost} is detected, look for the 1207 * {@link TabWidget}, and the corresponding {@link FrameLayout} and make new tabs automatically 1208 * based on the content of the {@link FrameLayout}. 1209 * @param view the root view to process. 1210 * @param projectCallback callback to the project. 1211 */ 1212 private void postInflateProcess(View view, IProjectCallback projectCallback) 1213 throws PostInflateException { 1214 if (view instanceof TabHost) { 1215 setupTabHost((TabHost)view, projectCallback); 1216 } else if (view instanceof QuickContactBadge) { 1217 QuickContactBadge badge = (QuickContactBadge) view; 1218 badge.setImageToDefault(); 1219 } else if (view instanceof AdapterView<?>) { 1220 // get the view ID. 1221 int id = view.getId(); 1222 1223 BridgeContext context = getContext(); 1224 1225 // get a ResourceReference from the integer ID. 1226 ResourceReference listRef = context.resolveId(id); 1227 1228 if (listRef != null) { 1229 SessionParams params = getParams(); 1230 AdapterBinding binding = params.getAdapterBindings().get(listRef); 1231 1232 // if there was no adapter binding, trying to get it from the call back. 1233 if (binding == null) { 1234 binding = params.getProjectCallback().getAdapterBinding(listRef, 1235 context.getViewKey(view), view); 1236 } 1237 1238 if (binding != null) { 1239 1240 if (view instanceof AbsListView) { 1241 if ((binding.getFooterCount() > 0 || binding.getHeaderCount() > 0) && 1242 view instanceof ListView) { 1243 ListView list = (ListView) view; 1244 1245 boolean skipCallbackParser = false; 1246 1247 int count = binding.getHeaderCount(); 1248 for (int i = 0 ; i < count ; i++) { 1249 Pair<View, Boolean> pair = context.inflateView( 1250 binding.getHeaderAt(i), 1251 list, false /*attachToRoot*/, skipCallbackParser); 1252 if (pair.getFirst() != null) { 1253 list.addHeaderView(pair.getFirst()); 1254 } 1255 1256 skipCallbackParser |= pair.getSecond(); 1257 } 1258 1259 count = binding.getFooterCount(); 1260 for (int i = 0 ; i < count ; i++) { 1261 Pair<View, Boolean> pair = context.inflateView( 1262 binding.getFooterAt(i), 1263 list, false /*attachToRoot*/, skipCallbackParser); 1264 if (pair.getFirst() != null) { 1265 list.addFooterView(pair.getFirst()); 1266 } 1267 1268 skipCallbackParser |= pair.getSecond(); 1269 } 1270 } 1271 1272 if (view instanceof ExpandableListView) { 1273 ((ExpandableListView) view).setAdapter( 1274 new FakeExpandableAdapter( 1275 listRef, binding, params.getProjectCallback())); 1276 } else { 1277 ((AbsListView) view).setAdapter( 1278 new FakeAdapter( 1279 listRef, binding, params.getProjectCallback())); 1280 } 1281 } else if (view instanceof AbsSpinner) { 1282 ((AbsSpinner) view).setAdapter( 1283 new FakeAdapter( 1284 listRef, binding, params.getProjectCallback())); 1285 } 1286 } 1287 } 1288 } else if (view instanceof ViewGroup) { 1289 ViewGroup group = (ViewGroup)view; 1290 final int count = group.getChildCount(); 1291 for (int c = 0 ; c < count ; c++) { 1292 View child = group.getChildAt(c); 1293 postInflateProcess(child, projectCallback); 1294 } 1295 } 1296 } 1297 1298 /** 1299 * Sets up a {@link TabHost} object. 1300 * @param tabHost the TabHost to setup. 1301 * @param projectCallback The project callback object to access the project R class. 1302 * @throws PostInflateException 1303 */ 1304 private void setupTabHost(TabHost tabHost, IProjectCallback projectCallback) 1305 throws PostInflateException { 1306 // look for the TabWidget, and the FrameLayout. They have their own specific names 1307 View v = tabHost.findViewById(android.R.id.tabs); 1308 1309 if (v == null) { 1310 throw new PostInflateException( 1311 "TabHost requires a TabWidget with id \"android:id/tabs\".\n"); 1312 } 1313 1314 if ((v instanceof TabWidget) == false) { 1315 throw new PostInflateException(String.format( 1316 "TabHost requires a TabWidget with id \"android:id/tabs\".\n" + 1317 "View found with id 'tabs' is '%s'", v.getClass().getCanonicalName())); 1318 } 1319 1320 v = tabHost.findViewById(android.R.id.tabcontent); 1321 1322 if (v == null) { 1323 // TODO: see if we can fake tabs even without the FrameLayout (same below when the framelayout is empty) 1324 throw new PostInflateException( 1325 "TabHost requires a FrameLayout with id \"android:id/tabcontent\"."); 1326 } 1327 1328 if ((v instanceof FrameLayout) == false) { 1329 throw new PostInflateException(String.format( 1330 "TabHost requires a FrameLayout with id \"android:id/tabcontent\".\n" + 1331 "View found with id 'tabcontent' is '%s'", v.getClass().getCanonicalName())); 1332 } 1333 1334 FrameLayout content = (FrameLayout)v; 1335 1336 // now process the content of the framelayout and dynamically create tabs for it. 1337 final int count = content.getChildCount(); 1338 1339 // this must be called before addTab() so that the TabHost searches its TabWidget 1340 // and FrameLayout. 1341 tabHost.setup(); 1342 1343 if (count == 0) { 1344 // Create a dummy child to get a single tab 1345 TabSpec spec = tabHost.newTabSpec("tag").setIndicator("Tab Label", 1346 tabHost.getResources().getDrawable(android.R.drawable.ic_menu_info_details)) 1347 .setContent(new TabHost.TabContentFactory() { 1348 @Override 1349 public View createTabContent(String tag) { 1350 return new LinearLayout(getContext()); 1351 } 1352 }); 1353 tabHost.addTab(spec); 1354 return; 1355 } else { 1356 // for each child of the framelayout, add a new TabSpec 1357 for (int i = 0 ; i < count ; i++) { 1358 View child = content.getChildAt(i); 1359 String tabSpec = String.format("tab_spec%d", i+1); 1360 int id = child.getId(); 1361 Pair<ResourceType, String> resource = projectCallback.resolveResourceId(id); 1362 String name; 1363 if (resource != null) { 1364 name = resource.getSecond(); 1365 } else { 1366 name = String.format("Tab %d", i+1); // default name if id is unresolved. 1367 } 1368 tabHost.addTab(tabHost.newTabSpec(tabSpec).setIndicator(name).setContent(id)); 1369 } 1370 } 1371 } 1372 1373 private List<ViewInfo> startVisitingViews(View view, int offset, boolean setExtendedInfo) { 1374 if (view == null) { 1375 return null; 1376 } 1377 1378 // adjust the offset to this view. 1379 offset += view.getTop(); 1380 1381 if (view == mContentRoot) { 1382 return visitAllChildren(mContentRoot, offset, setExtendedInfo); 1383 } 1384 1385 // otherwise, look for mContentRoot in the children 1386 if (view instanceof ViewGroup) { 1387 ViewGroup group = ((ViewGroup) view); 1388 1389 for (int i = 0; i < group.getChildCount(); i++) { 1390 List<ViewInfo> list = startVisitingViews(group.getChildAt(i), offset, 1391 setExtendedInfo); 1392 if (list != null) { 1393 return list; 1394 } 1395 } 1396 } 1397 1398 return null; 1399 } 1400 1401 /** 1402 * Visits a View and its children and generate a {@link ViewInfo} containing the 1403 * bounds of all the views. 1404 * @param view the root View 1405 * @param offset an offset for the view bounds. 1406 * @param setExtendedInfo whether to set the extended view info in the {@link ViewInfo} object. 1407 */ 1408 private ViewInfo visit(View view, int offset, boolean setExtendedInfo) { 1409 if (view == null) { 1410 return null; 1411 } 1412 1413 ViewInfo result = new ViewInfo(view.getClass().getName(), 1414 getContext().getViewKey(view), 1415 view.getLeft(), view.getTop() + offset, view.getRight(), view.getBottom() + offset, 1416 view, view.getLayoutParams()); 1417 1418 if (setExtendedInfo) { 1419 MarginLayoutParams marginParams = null; 1420 LayoutParams params = view.getLayoutParams(); 1421 if (params instanceof MarginLayoutParams) { 1422 marginParams = (MarginLayoutParams) params; 1423 } 1424 result.setExtendedInfo(view.getBaseline(), 1425 marginParams != null ? marginParams.leftMargin : 0, 1426 marginParams != null ? marginParams.topMargin : 0, 1427 marginParams != null ? marginParams.rightMargin : 0, 1428 marginParams != null ? marginParams.bottomMargin : 0); 1429 } 1430 1431 if (view instanceof ViewGroup) { 1432 ViewGroup group = ((ViewGroup) view); 1433 result.setChildren(visitAllChildren(group, 0 /*offset*/, setExtendedInfo)); 1434 } 1435 1436 return result; 1437 } 1438 1439 /** 1440 * Visits all the children of a given ViewGroup generate a list of {@link ViewInfo} 1441 * containing the bounds of all the views. 1442 * @param view the root View 1443 * @param offset an offset for the view bounds. 1444 * @param setExtendedInfo whether to set the extended view info in the {@link ViewInfo} object. 1445 */ 1446 private List<ViewInfo> visitAllChildren(ViewGroup viewGroup, int offset, 1447 boolean setExtendedInfo) { 1448 if (viewGroup == null) { 1449 return null; 1450 } 1451 1452 List<ViewInfo> children = new ArrayList<ViewInfo>(); 1453 for (int i = 0; i < viewGroup.getChildCount(); i++) { 1454 children.add(visit(viewGroup.getChildAt(i), offset, setExtendedInfo)); 1455 } 1456 return children; 1457 } 1458 1459 1460 private void invalidateRenderingSize() { 1461 mMeasuredScreenWidth = mMeasuredScreenHeight = -1; 1462 } 1463 1464 public BufferedImage getImage() { 1465 return mImage; 1466 } 1467 1468 public boolean isAlphaChannelImage() { 1469 return mIsAlphaChannelImage; 1470 } 1471 1472 public List<ViewInfo> getViewInfos() { 1473 return mViewInfoList; 1474 } 1475 1476 public Map<String, String> getDefaultProperties(Object viewObject) { 1477 return getContext().getDefaultPropMap(viewObject); 1478 } 1479 1480 public void setScene(RenderSession session) { 1481 mScene = session; 1482 } 1483 1484 public RenderSession getSession() { 1485 return mScene; 1486 } 1487} 1488