1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
24 : * Ehsan Akhgari <ehsan.akhgari@gmail.com>
25 : *
26 : * Alternatively, the contents of this file may be used under the terms of
27 : * either of the GNU General Public License Version 2 or later (the "GPL"),
28 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 : * in which case the provisions of the GPL or the LGPL are applicable instead
30 : * of those above. If you wish to allow use of your version of this file only
31 : * under the terms of either the GPL or the LGPL, and not to allow others to
32 : * use your version of this file under the terms of the MPL, indicate your
33 : * decision by deleting the provisions above and replace them with the notice
34 : * and other provisions required by the GPL or the LGPL. If you do not delete
35 : * the provisions above, a recipient may use your version of this file under
36 : * the terms of any one of the MPL, the GPL or the LGPL.
37 : *
38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : /* a presentation of a document, part 1 */
41 :
42 : #include "nsCOMPtr.h"
43 : #include "nsPresContext.h"
44 : #include "nsIPresShell.h"
45 : #include "nsILinkHandler.h"
46 : #include "nsIDocShellTreeItem.h"
47 : #include "nsIDocShell.h"
48 : #include "nsIContentViewer.h"
49 : #include "nsPIDOMWindow.h"
50 : #include "nsStyleSet.h"
51 : #include "nsImageLoader.h"
52 : #include "nsIContent.h"
53 : #include "nsIFrame.h"
54 : #include "nsIURL.h"
55 : #include "nsIDocument.h"
56 : #include "nsStyleContext.h"
57 : #include "mozilla/LookAndFeel.h"
58 : #include "nsIComponentManager.h"
59 : #include "nsIURIContentListener.h"
60 : #include "nsIInterfaceRequestor.h"
61 : #include "nsIInterfaceRequestorUtils.h"
62 : #include "nsIServiceManager.h"
63 : #include "nsIDOMElement.h"
64 : #include "nsContentPolicyUtils.h"
65 : #include "nsIDOMWindow.h"
66 : #include "nsXPIDLString.h"
67 : #include "nsIWeakReferenceUtils.h"
68 : #include "nsCSSRendering.h"
69 : #include "prprf.h"
70 : #include "nsIDOMDocument.h"
71 : #include "nsAutoPtr.h"
72 : #include "nsEventStateManager.h"
73 : #include "nsThreadUtils.h"
74 : #include "nsFrameManager.h"
75 : #include "nsLayoutUtils.h"
76 : #include "nsIViewManager.h"
77 : #include "nsCSSFrameConstructor.h"
78 : #include "nsCSSRuleProcessor.h"
79 : #include "nsStyleChangeList.h"
80 : #include "nsRuleNode.h"
81 : #include "nsEventDispatcher.h"
82 : #include "gfxUserFontSet.h"
83 : #include "gfxPlatform.h"
84 : #include "nsCSSRules.h"
85 : #include "nsFontFaceLoader.h"
86 : #include "nsEventListenerManager.h"
87 : #include "nsStyleStructInlines.h"
88 : #include "nsIAppShell.h"
89 : #include "prenv.h"
90 : #include "nsIPrivateDOMEvent.h"
91 : #include "nsIDOMEventTarget.h"
92 : #include "nsObjectFrame.h"
93 : #include "nsTransitionManager.h"
94 : #include "nsAnimationManager.h"
95 : #include "mozilla/dom/Element.h"
96 : #include "nsIFrameMessageManager.h"
97 : #include "FrameLayerBuilder.h"
98 : #include "nsDOMMediaQueryList.h"
99 : #include "nsSMILAnimationController.h"
100 :
101 : #ifdef IBMBIDI
102 : #include "nsBidiPresUtils.h"
103 : #endif // IBMBIDI
104 :
105 : #include "nsContentUtils.h"
106 : #include "nsPIWindowRoot.h"
107 : #include "mozilla/Preferences.h"
108 :
109 : // Needed for Start/Stop of Image Animation
110 : #include "imgIContainer.h"
111 : #include "nsIImageLoadingContent.h"
112 :
113 : //needed for resetting of image service color
114 : #include "nsLayoutCID.h"
115 :
116 : #include "nsCSSParser.h"
117 :
118 : using namespace mozilla;
119 : using namespace mozilla::dom;
120 :
121 : namespace {
122 :
123 : class CharSetChangingRunnable : public nsRunnable
124 0 : {
125 : public:
126 0 : CharSetChangingRunnable(nsPresContext* aPresContext,
127 : const nsCString& aCharSet)
128 : : mPresContext(aPresContext),
129 0 : mCharSet(aCharSet)
130 : {
131 0 : }
132 :
133 0 : NS_IMETHOD Run()
134 : {
135 0 : mPresContext->DoChangeCharSet(mCharSet);
136 0 : return NS_OK;
137 : }
138 :
139 : private:
140 : nsRefPtr<nsPresContext> mPresContext;
141 : nsCString mCharSet;
142 : };
143 :
144 : } // anonymous namespace
145 :
146 : static nscolor
147 0 : MakeColorPref(const nsString& aColor)
148 : {
149 : nscolor color;
150 0 : nsCSSParser parser;
151 : nsresult rv =
152 0 : parser.ParseColorString(aColor, nsnull, 0, &color);
153 0 : if (NS_FAILED(rv)) {
154 : // Any better choices?
155 0 : color = NS_RGB(0, 0, 0);
156 : }
157 0 : return color;
158 : }
159 :
160 : int
161 0 : nsPresContext::PrefChangedCallback(const char* aPrefName, void* instance_data)
162 : {
163 0 : nsPresContext* presContext = (nsPresContext*)instance_data;
164 :
165 0 : NS_ASSERTION(nsnull != presContext, "bad instance data");
166 0 : if (nsnull != presContext) {
167 0 : presContext->PreferenceChanged(aPrefName);
168 : }
169 0 : return 0; // PREF_OK
170 : }
171 :
172 :
173 : void
174 0 : nsPresContext::PrefChangedUpdateTimerCallback(nsITimer *aTimer, void *aClosure)
175 : {
176 0 : nsPresContext* presContext = (nsPresContext*)aClosure;
177 0 : NS_ASSERTION(presContext != nsnull, "bad instance data");
178 0 : if (presContext)
179 0 : presContext->UpdateAfterPreferencesChanged();
180 0 : }
181 :
182 : #ifdef IBMBIDI
183 : static bool
184 0 : IsVisualCharset(const nsCString& aCharset)
185 : {
186 0 : if (aCharset.LowerCaseEqualsLiteral("ibm864") // Arabic//ahmed
187 0 : || aCharset.LowerCaseEqualsLiteral("ibm862") // Hebrew
188 0 : || aCharset.LowerCaseEqualsLiteral("iso-8859-8") ) { // Hebrew
189 0 : return true; // visual text type
190 : }
191 : else {
192 0 : return false; // logical text type
193 : }
194 : }
195 : #endif // IBMBIDI
196 :
197 :
198 : static PLDHashOperator
199 0 : destroy_loads(const void * aKey, nsRefPtr<nsImageLoader>& aData, void* closure)
200 : {
201 0 : aData->Destroy();
202 0 : return PL_DHASH_NEXT;
203 : }
204 :
205 : #include "nsContentCID.h"
206 :
207 : // NOTE! nsPresContext::operator new() zeroes out all members, so don't
208 : // bother initializing members to 0.
209 :
210 0 : nsPresContext::nsPresContext(nsIDocument* aDocument, nsPresContextType aType)
211 : : mType(aType), mDocument(aDocument), mMinFontSize(0),
212 : mTextZoom(1.0), mFullZoom(1.0), mPageSize(-1, -1), mPPScale(1.0f),
213 : mViewportStyleOverflow(NS_STYLE_OVERFLOW_AUTO, NS_STYLE_OVERFLOW_AUTO),
214 0 : mImageAnimationModePref(imgIContainer::kNormalAnimMode)
215 : {
216 : // NOTE! nsPresContext::operator new() zeroes out all members, so don't
217 : // bother initializing members to 0.
218 :
219 0 : mDoScaledTwips = true;
220 :
221 0 : SetBackgroundImageDraw(true); // always draw the background
222 0 : SetBackgroundColorDraw(true);
223 :
224 0 : mBackgroundColor = NS_RGB(0xFF, 0xFF, 0xFF);
225 :
226 0 : mUseDocumentColors = true;
227 0 : mUseDocumentFonts = true;
228 :
229 : // the minimum font-size is unconstrained by default
230 :
231 0 : mLinkColor = NS_RGB(0x00, 0x00, 0xEE);
232 0 : mActiveLinkColor = NS_RGB(0xEE, 0x00, 0x00);
233 0 : mVisitedLinkColor = NS_RGB(0x55, 0x1A, 0x8B);
234 0 : mUnderlineLinks = true;
235 0 : mSendAfterPaintToContent = false;
236 :
237 0 : mFocusTextColor = mDefaultColor;
238 0 : mFocusBackgroundColor = mBackgroundColor;
239 0 : mFocusRingWidth = 1;
240 :
241 0 : mBodyTextColor = mDefaultColor;
242 :
243 0 : if (aType == eContext_Galley) {
244 0 : mMedium = nsGkAtoms::screen;
245 : } else {
246 0 : mMedium = nsGkAtoms::print;
247 0 : mPaginated = true;
248 : }
249 :
250 0 : if (!IsDynamic()) {
251 0 : mImageAnimationMode = imgIContainer::kDontAnimMode;
252 0 : mNeverAnimate = true;
253 : } else {
254 0 : mImageAnimationMode = imgIContainer::kNormalAnimMode;
255 0 : mNeverAnimate = false;
256 : }
257 0 : NS_ASSERTION(mDocument, "Null document");
258 0 : mUserFontSet = nsnull;
259 0 : mUserFontSetDirty = true;
260 :
261 0 : PR_INIT_CLIST(&mDOMMediaQueryLists);
262 0 : }
263 :
264 0 : nsPresContext::~nsPresContext()
265 : {
266 0 : NS_PRECONDITION(!mShell, "Presshell forgot to clear our mShell pointer");
267 0 : SetShell(nsnull);
268 :
269 0 : NS_ABORT_IF_FALSE(PR_CLIST_IS_EMPTY(&mDOMMediaQueryLists),
270 : "must not have media query lists left");
271 :
272 : // Disconnect the refresh driver *after* the transition manager, which
273 : // needs it.
274 0 : if (mRefreshDriver && mRefreshDriver->PresContext() == this) {
275 0 : mRefreshDriver->Disconnect();
276 : }
277 :
278 0 : if (mEventManager) {
279 : // unclear if these are needed, but can't hurt
280 0 : mEventManager->NotifyDestroyPresContext(this);
281 0 : mEventManager->SetPresContext(nsnull);
282 :
283 0 : NS_RELEASE(mEventManager);
284 : }
285 :
286 0 : if (mPrefChangedTimer)
287 : {
288 0 : mPrefChangedTimer->Cancel();
289 0 : mPrefChangedTimer = nsnull;
290 : }
291 :
292 : // Unregister preference callbacks
293 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
294 : "font.",
295 0 : this);
296 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
297 : "browser.display.",
298 0 : this);
299 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
300 : "browser.underline_anchors",
301 0 : this);
302 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
303 : "browser.anchor_color",
304 0 : this);
305 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
306 : "browser.active_color",
307 0 : this);
308 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
309 : "browser.visited_color",
310 0 : this);
311 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
312 : "image.animation_mode",
313 0 : this);
314 : #ifdef IBMBIDI
315 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
316 : "bidi.",
317 0 : this);
318 : #endif // IBMBIDI
319 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
320 : "dom.send_after_paint_to_content",
321 0 : this);
322 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
323 : "gfx.font_rendering.",
324 0 : this);
325 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
326 : "layout.css.dpi",
327 0 : this);
328 : Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
329 : "layout.css.devPixelsPerPx",
330 0 : this);
331 :
332 0 : NS_IF_RELEASE(mDeviceContext);
333 0 : NS_IF_RELEASE(mLanguage);
334 0 : }
335 :
336 1396 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsPresContext)
337 :
338 0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsPresContext)
339 0 : NS_INTERFACE_MAP_ENTRY(nsISupports)
340 0 : NS_INTERFACE_MAP_ENTRY(nsIObserver)
341 0 : NS_INTERFACE_MAP_END
342 :
343 0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(nsPresContext)
344 0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(nsPresContext)
345 :
346 : static PLDHashOperator
347 0 : TraverseImageLoader(const void * aKey, nsRefPtr<nsImageLoader>& aData,
348 : void* aClosure)
349 : {
350 : nsCycleCollectionTraversalCallback *cb =
351 0 : static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
352 :
353 0 : NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, "mImageLoaders[i] item");
354 0 : cb->NoteXPCOMChild(aData);
355 :
356 0 : return PL_DHASH_NEXT;
357 : }
358 :
359 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsPresContext)
360 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mDocument);
361 : // NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mDeviceContext); // not xpcom
362 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mEventManager, nsIObserver);
363 : // NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mLanguage); // an atom
364 :
365 0 : for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i)
366 0 : tmp->mImageLoaders[i].Enumerate(TraverseImageLoader, &cb);
367 :
368 : // We own only the items in mDOMMediaQueryLists that have listeners;
369 : // this reference is managed by their AddListener and RemoveListener
370 : // methods.
371 0 : for (PRCList *l = PR_LIST_HEAD(&tmp->mDOMMediaQueryLists);
372 : l != &tmp->mDOMMediaQueryLists; l = PR_NEXT_LINK(l)) {
373 0 : nsDOMMediaQueryList *mql = static_cast<nsDOMMediaQueryList*>(l);
374 0 : if (mql->HasListeners()) {
375 0 : NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mDOMMediaQueryLists item");
376 0 : cb.NoteXPCOMChild(mql);
377 : }
378 : }
379 :
380 : // NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTheme); // a service
381 : // NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mLangService); // a service
382 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mPrintSettings);
383 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mPrefChangedTimer);
384 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
385 :
386 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsPresContext)
387 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mDocument);
388 0 : NS_RELEASE(tmp->mDeviceContext); // worth bothering?
389 0 : if (tmp->mEventManager) {
390 : // unclear if these are needed, but can't hurt
391 0 : tmp->mEventManager->NotifyDestroyPresContext(tmp);
392 0 : tmp->mEventManager->SetPresContext(nsnull);
393 :
394 0 : NS_RELEASE(tmp->mEventManager);
395 : }
396 :
397 : // We own only the items in mDOMMediaQueryLists that have listeners;
398 : // this reference is managed by their AddListener and RemoveListener
399 : // methods.
400 0 : for (PRCList *l = PR_LIST_HEAD(&tmp->mDOMMediaQueryLists);
401 : l != &tmp->mDOMMediaQueryLists; ) {
402 0 : PRCList *next = PR_NEXT_LINK(l);
403 0 : nsDOMMediaQueryList *mql = static_cast<nsDOMMediaQueryList*>(l);
404 0 : mql->RemoveAllListeners();
405 0 : l = next;
406 : }
407 :
408 : // NS_RELEASE(tmp->mLanguage); // an atom
409 :
410 : // NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTheme); // a service
411 : // NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mLangService); // a service
412 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mPrintSettings);
413 0 : if (tmp->mPrefChangedTimer)
414 : {
415 0 : tmp->mPrefChangedTimer->Cancel();
416 0 : tmp->mPrefChangedTimer = nsnull;
417 : }
418 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
419 :
420 :
421 : #define MAKE_FONT_PREF_KEY(_pref, _s0, _s1) \
422 : _pref.Assign(_s0); \
423 : _pref.Append(_s1);
424 :
425 : static const char* const kGenericFont[] = {
426 : ".variable.",
427 : ".fixed.",
428 : ".serif.",
429 : ".sans-serif.",
430 : ".monospace.",
431 : ".cursive.",
432 : ".fantasy."
433 : };
434 :
435 : // whether no native theme service exists;
436 : // if this gets set to true, we'll stop asking for it.
437 : static bool sNoTheme = false;
438 :
439 : // Set to true when LookAndFeelChanged needs to be called. This is used
440 : // because the look and feel is a service, so there's no need to notify it from
441 : // more than one prescontext.
442 : static bool sLookAndFeelChanged;
443 :
444 : // Set to true when ThemeChanged needs to be called on mTheme. This is used
445 : // because mTheme is a service, so there's no need to notify it from more than
446 : // one prescontext.
447 : static bool sThemeChanged;
448 :
449 : const nsPresContext::LangGroupFontPrefs*
450 0 : nsPresContext::GetFontPrefsForLang(nsIAtom *aLanguage) const
451 : {
452 : // Get language group for aLanguage:
453 :
454 : nsresult rv;
455 0 : nsIAtom *langGroupAtom = nsnull;
456 0 : if (!aLanguage) {
457 0 : aLanguage = mLanguage;
458 : }
459 0 : if (aLanguage && mLangService) {
460 0 : langGroupAtom = mLangService->GetLanguageGroup(aLanguage, &rv);
461 : }
462 0 : if (NS_FAILED(rv) || !langGroupAtom) {
463 0 : langGroupAtom = nsGkAtoms::x_western; // Assume x-western is safe...
464 : }
465 :
466 : // Look for cached prefs for this lang group.
467 : // Most documents will only use one (or very few) language groups. Rather
468 : // than have the overhead of a hash lookup, we simply look along what will
469 : // typically be a very short (usually of length 1) linked list. There are 31
470 : // language groups, so in the worst case scenario we'll need to traverse 31
471 : // link items.
472 :
473 : LangGroupFontPrefs *prefs =
474 0 : const_cast<LangGroupFontPrefs*>(&mLangGroupFontPrefs);
475 0 : if (prefs->mLangGroup) { // if initialized
476 0 : DebugOnly<PRUint32> count = 0;
477 0 : for (;;) {
478 0 : NS_ASSERTION(++count < 35, "Lang group count exceeded!!!");
479 0 : if (prefs->mLangGroup == langGroupAtom) {
480 0 : return prefs;
481 : }
482 0 : if (!prefs->mNext) {
483 : break;
484 : }
485 0 : prefs = prefs->mNext;
486 : }
487 :
488 : // nothing cached, so go on and fetch the prefs for this lang group:
489 0 : prefs = prefs->mNext = new LangGroupFontPrefs;
490 : }
491 :
492 0 : prefs->mLangGroup = langGroupAtom;
493 :
494 : /* Fetch the font prefs to be used -- see bug 61883 for details.
495 : Not all prefs are needed upfront. Some are fallback prefs intended
496 : for the GFX font sub-system...
497 :
498 : 1) unit : assumed to be the same for all language groups -------------
499 : font.size.unit = px | pt XXX could be folded in the size... bug 90440
500 :
501 : 2) attributes for generic fonts --------------------------------------
502 : font.default.[langGroup] = serif | sans-serif - fallback generic font
503 : font.name.[generic].[langGroup] = current user' selected font on the pref dialog
504 : font.name-list.[generic].[langGroup] = fontname1, fontname2, ... [factory pre-built list]
505 : font.size.[generic].[langGroup] = integer - settable by the user
506 : font.size-adjust.[generic].[langGroup] = "float" - settable by the user
507 : font.minimum-size.[langGroup] = integer - settable by the user
508 : */
509 :
510 0 : nsCAutoString langGroup;
511 0 : langGroupAtom->ToUTF8String(langGroup);
512 :
513 0 : prefs->mDefaultVariableFont.size = CSSPixelsToAppUnits(16);
514 0 : prefs->mDefaultFixedFont.size = CSSPixelsToAppUnits(13);
515 :
516 0 : nsCAutoString pref;
517 :
518 : // get the current applicable font-size unit
519 : enum {eUnit_unknown = -1, eUnit_px, eUnit_pt};
520 0 : PRInt32 unit = eUnit_px;
521 :
522 : nsAdoptingCString cvalue =
523 0 : Preferences::GetCString("font.size.unit");
524 :
525 0 : if (!cvalue.IsEmpty()) {
526 0 : if (cvalue.Equals("px")) {
527 0 : unit = eUnit_px;
528 : }
529 0 : else if (cvalue.Equals("pt")) {
530 0 : unit = eUnit_pt;
531 : }
532 : else {
533 : // XXX should really send this warning to the user (Error Console?).
534 : // And just default to unit = eUnit_px?
535 0 : NS_WARNING("unexpected font-size unit -- expected: 'px' or 'pt'");
536 0 : unit = eUnit_unknown;
537 : }
538 : }
539 :
540 : // get font.minimum-size.[langGroup]
541 :
542 0 : MAKE_FONT_PREF_KEY(pref, "font.minimum-size.", langGroup);
543 :
544 0 : PRInt32 size = Preferences::GetInt(pref.get());
545 0 : if (unit == eUnit_px) {
546 0 : prefs->mMinimumFontSize = CSSPixelsToAppUnits(size);
547 : }
548 0 : else if (unit == eUnit_pt) {
549 0 : prefs->mMinimumFontSize = CSSPointsToAppUnits(size);
550 : }
551 :
552 : nsFont* fontTypes[] = {
553 : &prefs->mDefaultVariableFont,
554 : &prefs->mDefaultFixedFont,
555 : &prefs->mDefaultSerifFont,
556 : &prefs->mDefaultSansSerifFont,
557 : &prefs->mDefaultMonospaceFont,
558 : &prefs->mDefaultCursiveFont,
559 : &prefs->mDefaultFantasyFont
560 0 : };
561 : PR_STATIC_ASSERT(NS_ARRAY_LENGTH(fontTypes) == eDefaultFont_COUNT);
562 :
563 : // Get attributes specific to each generic font. We do not get the user's
564 : // generic-font-name-to-specific-family-name preferences because its the
565 : // generic name that should be fed into the cascade. It is up to the GFX
566 : // code to look up the font prefs to convert generic names to specific
567 : // family names as necessary.
568 0 : nsCAutoString generic_dot_langGroup;
569 0 : for (PRUint32 eType = 0; eType < ArrayLength(fontTypes); ++eType) {
570 0 : generic_dot_langGroup.Assign(kGenericFont[eType]);
571 0 : generic_dot_langGroup.Append(langGroup);
572 :
573 0 : nsFont* font = fontTypes[eType];
574 :
575 : // set the default variable font (the other fonts are seen as 'generic' fonts
576 : // in GFX and will be queried there when hunting for alternative fonts)
577 0 : if (eType == eDefaultFont_Variable) {
578 0 : MAKE_FONT_PREF_KEY(pref, "font.name.variable.", langGroup);
579 :
580 0 : nsAdoptingString value = Preferences::GetString(pref.get());
581 0 : if (!value.IsEmpty()) {
582 0 : prefs->mDefaultVariableFont.name.Assign(value);
583 : }
584 : else {
585 0 : MAKE_FONT_PREF_KEY(pref, "font.default.", langGroup);
586 0 : value = Preferences::GetString(pref.get());
587 0 : if (!value.IsEmpty()) {
588 0 : prefs->mDefaultVariableFont.name.Assign(value);
589 : }
590 : }
591 : }
592 : else {
593 0 : if (eType == eDefaultFont_Monospace) {
594 : // This takes care of the confusion whereby people often expect "monospace"
595 : // to have the same default font-size as "-moz-fixed" (this tentative
596 : // size may be overwritten with the specific value for "monospace" when
597 : // "font.size.monospace.[langGroup]" is read -- see below)
598 0 : prefs->mDefaultMonospaceFont.size = prefs->mDefaultFixedFont.size;
599 : }
600 0 : else if (eType != eDefaultFont_Fixed) {
601 : // all the other generic fonts are initialized with the size of the
602 : // variable font, but their specific size can supersede later -- see below
603 0 : font->size = prefs->mDefaultVariableFont.size;
604 : }
605 : }
606 :
607 : // Bug 84398: for spec purists, a different font-size only applies to the
608 : // .variable. and .fixed. fonts and the other fonts should get |font-size-adjust|.
609 : // The problem is that only GfxWin has the support for |font-size-adjust|. So for
610 : // parity, we enable the ability to set a different font-size on all platforms.
611 :
612 : // get font.size.[generic].[langGroup]
613 : // size=0 means 'Auto', i.e., generic fonts retain the size of the variable font
614 0 : MAKE_FONT_PREF_KEY(pref, "font.size", generic_dot_langGroup);
615 0 : size = Preferences::GetInt(pref.get());
616 0 : if (size > 0) {
617 0 : if (unit == eUnit_px) {
618 0 : font->size = CSSPixelsToAppUnits(size);
619 : }
620 0 : else if (unit == eUnit_pt) {
621 0 : font->size = CSSPointsToAppUnits(size);
622 : }
623 : }
624 :
625 : // get font.size-adjust.[generic].[langGroup]
626 : // XXX only applicable on GFX ports that handle |font-size-adjust|
627 0 : MAKE_FONT_PREF_KEY(pref, "font.size-adjust", generic_dot_langGroup);
628 0 : cvalue = Preferences::GetCString(pref.get());
629 0 : if (!cvalue.IsEmpty()) {
630 0 : font->sizeAdjust = (float)atof(cvalue.get());
631 : }
632 :
633 : #ifdef DEBUG_rbs
634 : printf("%s Family-list:%s size:%d sizeAdjust:%.2f\n",
635 : generic_dot_langGroup.get(),
636 : NS_ConvertUTF16toUTF8(font->name).get(), font->size,
637 : font->sizeAdjust);
638 : #endif
639 : }
640 :
641 0 : return prefs;
642 : }
643 :
644 : void
645 0 : nsPresContext::GetDocumentColorPreferences()
646 : {
647 0 : PRInt32 useAccessibilityTheme = 0;
648 0 : bool usePrefColors = true;
649 0 : nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryReferent(mContainer));
650 0 : if (docShell) {
651 : PRInt32 docShellType;
652 0 : docShell->GetItemType(&docShellType);
653 0 : if (nsIDocShellTreeItem::typeChrome == docShellType) {
654 0 : usePrefColors = false;
655 : }
656 : else {
657 : useAccessibilityTheme =
658 0 : LookAndFeel::GetInt(LookAndFeel::eIntID_UseAccessibilityTheme, 0);
659 0 : usePrefColors = !useAccessibilityTheme;
660 : }
661 :
662 : }
663 0 : if (usePrefColors) {
664 : usePrefColors =
665 0 : !Preferences::GetBool("browser.display.use_system_colors", false);
666 : }
667 :
668 0 : if (usePrefColors) {
669 : nsAdoptingString colorStr =
670 0 : Preferences::GetString("browser.display.foreground_color");
671 :
672 0 : if (!colorStr.IsEmpty()) {
673 0 : mDefaultColor = MakeColorPref(colorStr);
674 : }
675 :
676 0 : colorStr = Preferences::GetString("browser.display.background_color");
677 :
678 0 : if (!colorStr.IsEmpty()) {
679 0 : mBackgroundColor = MakeColorPref(colorStr);
680 : }
681 : }
682 : else {
683 : mDefaultColor =
684 : LookAndFeel::GetColor(LookAndFeel::eColorID_WindowForeground,
685 0 : NS_RGB(0x00, 0x00, 0x00));
686 : mBackgroundColor =
687 : LookAndFeel::GetColor(LookAndFeel::eColorID_WindowBackground,
688 0 : NS_RGB(0xFF, 0xFF, 0xFF));
689 : }
690 :
691 : // Wherever we got the default background color from, ensure it is
692 : // opaque.
693 : mBackgroundColor = NS_ComposeColors(NS_RGB(0xFF, 0xFF, 0xFF),
694 0 : mBackgroundColor);
695 :
696 : mUseDocumentColors = !useAccessibilityTheme &&
697 : Preferences::GetBool("browser.display.use_document_colors",
698 0 : mUseDocumentColors);
699 0 : }
700 :
701 : void
702 0 : nsPresContext::GetUserPreferences()
703 : {
704 0 : if (!GetPresShell()) {
705 : // No presshell means nothing to do here. We'll do this when we
706 : // get a presshell.
707 0 : return;
708 : }
709 :
710 : mAutoQualityMinFontSizePixelsPref =
711 0 : Preferences::GetInt("browser.display.auto_quality_min_font_size");
712 :
713 : // * document colors
714 0 : GetDocumentColorPreferences();
715 :
716 : mSendAfterPaintToContent =
717 : Preferences::GetBool("dom.send_after_paint_to_content",
718 0 : mSendAfterPaintToContent);
719 :
720 : // * link colors
721 : mUnderlineLinks =
722 0 : Preferences::GetBool("browser.underline_anchors", mUnderlineLinks);
723 :
724 0 : nsAdoptingString colorStr = Preferences::GetString("browser.anchor_color");
725 :
726 0 : if (!colorStr.IsEmpty()) {
727 0 : mLinkColor = MakeColorPref(colorStr);
728 : }
729 :
730 0 : colorStr = Preferences::GetString("browser.active_color");
731 :
732 0 : if (!colorStr.IsEmpty()) {
733 0 : mActiveLinkColor = MakeColorPref(colorStr);
734 : }
735 :
736 0 : colorStr = Preferences::GetString("browser.visited_color");
737 :
738 0 : if (!colorStr.IsEmpty()) {
739 0 : mVisitedLinkColor = MakeColorPref(colorStr);
740 : }
741 :
742 : mUseFocusColors =
743 0 : Preferences::GetBool("browser.display.use_focus_colors", mUseFocusColors);
744 :
745 0 : mFocusTextColor = mDefaultColor;
746 0 : mFocusBackgroundColor = mBackgroundColor;
747 :
748 0 : colorStr = Preferences::GetString("browser.display.focus_text_color");
749 :
750 0 : if (!colorStr.IsEmpty()) {
751 0 : mFocusTextColor = MakeColorPref(colorStr);
752 : }
753 :
754 0 : colorStr = Preferences::GetString("browser.display.focus_background_color");
755 :
756 0 : if (!colorStr.IsEmpty()) {
757 0 : mFocusBackgroundColor = MakeColorPref(colorStr);
758 : }
759 :
760 : mFocusRingWidth =
761 0 : Preferences::GetInt("browser.display.focus_ring_width", mFocusRingWidth);
762 :
763 : mFocusRingOnAnything =
764 : Preferences::GetBool("browser.display.focus_ring_on_anything",
765 0 : mFocusRingOnAnything);
766 :
767 : mFocusRingStyle =
768 0 : Preferences::GetInt("browser.display.focus_ring_style", mFocusRingStyle);
769 :
770 0 : mBodyTextColor = mDefaultColor;
771 :
772 : // * use fonts?
773 : mUseDocumentFonts =
774 0 : Preferences::GetInt("browser.display.use_document_fonts") != 0;
775 :
776 : // * replace backslashes with Yen signs? (bug 245770)
777 : mEnableJapaneseTransform =
778 0 : Preferences::GetBool("layout.enable_japanese_specific_transform");
779 :
780 0 : mPrefScrollbarSide = Preferences::GetInt("layout.scrollbar.side");
781 :
782 0 : ResetCachedFontPrefs();
783 :
784 : // * image animation
785 : const nsAdoptingCString& animatePref =
786 0 : Preferences::GetCString("image.animation_mode");
787 0 : if (animatePref.Equals("normal"))
788 0 : mImageAnimationModePref = imgIContainer::kNormalAnimMode;
789 0 : else if (animatePref.Equals("none"))
790 0 : mImageAnimationModePref = imgIContainer::kDontAnimMode;
791 0 : else if (animatePref.Equals("once"))
792 0 : mImageAnimationModePref = imgIContainer::kLoopOnceAnimMode;
793 : else // dynamic change to invalid value should act like it does initially
794 0 : mImageAnimationModePref = imgIContainer::kNormalAnimMode;
795 :
796 0 : PRUint32 bidiOptions = GetBidi();
797 :
798 : PRInt32 prefInt =
799 : Preferences::GetInt(IBMBIDI_TEXTDIRECTION_STR,
800 0 : GET_BIDI_OPTION_DIRECTION(bidiOptions));
801 0 : SET_BIDI_OPTION_DIRECTION(bidiOptions, prefInt);
802 0 : mPrefBidiDirection = prefInt;
803 :
804 : prefInt =
805 : Preferences::GetInt(IBMBIDI_TEXTTYPE_STR,
806 0 : GET_BIDI_OPTION_TEXTTYPE(bidiOptions));
807 0 : SET_BIDI_OPTION_TEXTTYPE(bidiOptions, prefInt);
808 :
809 : prefInt =
810 : Preferences::GetInt(IBMBIDI_NUMERAL_STR,
811 0 : GET_BIDI_OPTION_NUMERAL(bidiOptions));
812 0 : SET_BIDI_OPTION_NUMERAL(bidiOptions, prefInt);
813 :
814 : prefInt =
815 : Preferences::GetInt(IBMBIDI_SUPPORTMODE_STR,
816 0 : GET_BIDI_OPTION_SUPPORT(bidiOptions));
817 0 : SET_BIDI_OPTION_SUPPORT(bidiOptions, prefInt);
818 :
819 : // We don't need to force reflow: either we are initializing a new
820 : // prescontext or we are being called from UpdateAfterPreferencesChanged()
821 : // which triggers a reflow anyway.
822 0 : SetBidi(bidiOptions, false);
823 : }
824 :
825 : void
826 0 : nsPresContext::InvalidateThebesLayers()
827 : {
828 0 : if (!mShell)
829 0 : return;
830 0 : nsIFrame* rootFrame = mShell->FrameManager()->GetRootFrame();
831 0 : if (rootFrame) {
832 : // FrameLayerBuilder caches invalidation-related values that depend on the
833 : // appunits-per-dev-pixel ratio, so ensure that all ThebesLayer drawing
834 : // is completely flushed.
835 0 : FrameLayerBuilder::InvalidateThebesLayersInSubtree(rootFrame);
836 : }
837 : }
838 :
839 : void
840 0 : nsPresContext::AppUnitsPerDevPixelChanged()
841 : {
842 0 : InvalidateThebesLayers();
843 :
844 0 : mDeviceContext->FlushFontCache();
845 :
846 : // All cached style data must be recomputed.
847 0 : if (HasCachedStyleData()) {
848 0 : MediaFeatureValuesChanged(true);
849 0 : RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
850 : }
851 0 : }
852 :
853 : void
854 0 : nsPresContext::PreferenceChanged(const char* aPrefName)
855 : {
856 0 : nsDependentCString prefName(aPrefName);
857 0 : if (prefName.EqualsLiteral("layout.css.dpi") ||
858 0 : prefName.EqualsLiteral("layout.css.devPixelsPerPx")) {
859 0 : PRInt32 oldAppUnitsPerDevPixel = AppUnitsPerDevPixel();
860 0 : if (mDeviceContext->CheckDPIChange() && mShell) {
861 : // Re-fetch the view manager's window dimensions in case there's a deferred
862 : // resize which hasn't affected our mVisibleArea yet
863 : nscoord oldWidthAppUnits, oldHeightAppUnits;
864 0 : nsIViewManager* vm = mShell->GetViewManager();
865 0 : vm->GetWindowDimensions(&oldWidthAppUnits, &oldHeightAppUnits);
866 0 : float oldWidthDevPixels = oldWidthAppUnits/oldAppUnitsPerDevPixel;
867 0 : float oldHeightDevPixels = oldHeightAppUnits/oldAppUnitsPerDevPixel;
868 :
869 0 : nscoord width = NSToCoordRound(oldWidthDevPixels*AppUnitsPerDevPixel());
870 0 : nscoord height = NSToCoordRound(oldHeightDevPixels*AppUnitsPerDevPixel());
871 0 : vm->SetWindowDimensions(width, height);
872 :
873 0 : AppUnitsPerDevPixelChanged();
874 : }
875 : return;
876 : }
877 0 : if (StringBeginsWith(prefName, NS_LITERAL_CSTRING("font."))) {
878 : // Changes to font family preferences don't change anything in the
879 : // computed style data, so the style system won't generate a reflow
880 : // hint for us. We need to do that manually.
881 :
882 : // FIXME We could probably also handle changes to
883 : // browser.display.auto_quality_min_font_size here, but that
884 : // probably also requires clearing the text run cache, so don't
885 : // bother (yet, anyway).
886 0 : mPrefChangePendingNeedsReflow = true;
887 : }
888 0 : if (StringBeginsWith(prefName, NS_LITERAL_CSTRING("bidi."))) {
889 : // Changes to bidi prefs need to trigger a reflow (see bug 443629)
890 0 : mPrefChangePendingNeedsReflow = true;
891 :
892 : // Changes to bidi.numeral also needs to empty the text run cache.
893 : // This is handled in gfxTextRunWordCache.cpp.
894 : }
895 0 : if (StringBeginsWith(prefName, NS_LITERAL_CSTRING("gfx.font_rendering."))) {
896 : // Changes to font_rendering prefs need to trigger a reflow
897 0 : mPrefChangePendingNeedsReflow = true;
898 : }
899 : // we use a zero-delay timer to coalesce multiple pref updates
900 0 : if (!mPrefChangedTimer)
901 : {
902 0 : mPrefChangedTimer = do_CreateInstance("@mozilla.org/timer;1");
903 0 : if (!mPrefChangedTimer)
904 : return;
905 0 : mPrefChangedTimer->InitWithFuncCallback(nsPresContext::PrefChangedUpdateTimerCallback, (void*)this, 0, nsITimer::TYPE_ONE_SHOT);
906 : }
907 : }
908 :
909 : void
910 0 : nsPresContext::UpdateAfterPreferencesChanged()
911 : {
912 0 : mPrefChangedTimer = nsnull;
913 :
914 0 : nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryReferent(mContainer));
915 0 : if (docShell) {
916 : PRInt32 docShellType;
917 0 : docShell->GetItemType(&docShellType);
918 0 : if (nsIDocShellTreeItem::typeChrome == docShellType)
919 : return;
920 : }
921 :
922 : // Initialize our state from the user preferences
923 0 : GetUserPreferences();
924 :
925 : // update the presShell: tell it to set the preference style rules up
926 0 : if (mShell) {
927 0 : mShell->SetPreferenceStyleRules(true);
928 : }
929 :
930 0 : InvalidateThebesLayers();
931 0 : mDeviceContext->FlushFontCache();
932 :
933 0 : nsChangeHint hint = nsChangeHint(0);
934 :
935 0 : if (mPrefChangePendingNeedsReflow) {
936 0 : NS_UpdateHint(hint, NS_STYLE_HINT_REFLOW);
937 : }
938 :
939 0 : RebuildAllStyleData(hint);
940 : }
941 :
942 : nsresult
943 0 : nsPresContext::Init(nsDeviceContext* aDeviceContext)
944 : {
945 0 : NS_ASSERTION(!mInitialized, "attempt to reinit pres context");
946 0 : NS_ENSURE_ARG(aDeviceContext);
947 :
948 0 : mDeviceContext = aDeviceContext;
949 0 : NS_ADDREF(mDeviceContext);
950 :
951 0 : if (mDeviceContext->SetPixelScale(mFullZoom))
952 0 : mDeviceContext->FlushFontCache();
953 0 : mCurAppUnitsPerDevPixel = AppUnitsPerDevPixel();
954 :
955 0 : for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i)
956 0 : if (!mImageLoaders[i].Init())
957 0 : return NS_ERROR_OUT_OF_MEMORY;
958 :
959 0 : mEventManager = new nsEventStateManager();
960 0 : NS_ADDREF(mEventManager);
961 :
962 0 : mTransitionManager = new nsTransitionManager(this);
963 :
964 0 : mAnimationManager = new nsAnimationManager(this);
965 :
966 0 : if (mDocument->GetDisplayDocument()) {
967 0 : NS_ASSERTION(mDocument->GetDisplayDocument()->GetShell() &&
968 : mDocument->GetDisplayDocument()->GetShell()->GetPresContext(),
969 : "Why are we being initialized?");
970 : mRefreshDriver = mDocument->GetDisplayDocument()->GetShell()->
971 0 : GetPresContext()->RefreshDriver();
972 : } else {
973 0 : nsIDocument* parent = mDocument->GetParentDocument();
974 : // Unfortunately, sometimes |parent| here has no presshell because
975 : // printing screws up things. Assert that in other cases it does,
976 : // but whenever the shell is null just fall back on using our own
977 : // refresh driver.
978 0 : NS_ASSERTION(!parent || mDocument->IsStaticDocument() || parent->GetShell(),
979 : "How did we end up with a presshell if our parent doesn't "
980 : "have one?");
981 0 : if (parent && parent->GetShell()) {
982 0 : NS_ASSERTION(parent->GetShell()->GetPresContext(),
983 : "How did we get a presshell?");
984 :
985 : // We don't have our container set yet at this point
986 0 : nsCOMPtr<nsISupports> ourContainer = mDocument->GetContainer();
987 :
988 0 : nsCOMPtr<nsIDocShellTreeItem> ourItem = do_QueryInterface(ourContainer);
989 0 : if (ourItem) {
990 0 : nsCOMPtr<nsIDocShellTreeItem> parentItem;
991 0 : ourItem->GetSameTypeParent(getter_AddRefs(parentItem));
992 0 : if (parentItem) {
993 0 : mRefreshDriver = parent->GetShell()->GetPresContext()->RefreshDriver();
994 : }
995 : }
996 : }
997 :
998 0 : if (!mRefreshDriver) {
999 0 : mRefreshDriver = new nsRefreshDriver(this);
1000 : }
1001 : }
1002 :
1003 0 : mLangService = do_GetService(NS_LANGUAGEATOMSERVICE_CONTRACTID);
1004 :
1005 : // Register callbacks so we're notified when the preferences change
1006 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1007 : "font.",
1008 0 : this);
1009 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1010 : "browser.display.",
1011 0 : this);
1012 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1013 : "browser.underline_anchors",
1014 0 : this);
1015 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1016 : "browser.anchor_color",
1017 0 : this);
1018 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1019 : "browser.active_color",
1020 0 : this);
1021 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1022 : "browser.visited_color",
1023 0 : this);
1024 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1025 : "image.animation_mode",
1026 0 : this);
1027 : #ifdef IBMBIDI
1028 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1029 : "bidi.",
1030 0 : this);
1031 : #endif
1032 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1033 : "dom.send_after_paint_to_content",
1034 0 : this);
1035 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1036 : "gfx.font_rendering.",
1037 0 : this);
1038 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1039 : "layout.css.dpi",
1040 0 : this);
1041 : Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
1042 : "layout.css.devPixelsPerPx",
1043 0 : this);
1044 :
1045 0 : nsresult rv = mEventManager->Init();
1046 0 : NS_ENSURE_SUCCESS(rv, rv);
1047 :
1048 0 : mEventManager->SetPresContext(this);
1049 :
1050 : #ifdef DEBUG
1051 0 : mInitialized = true;
1052 : #endif
1053 :
1054 0 : mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THIN] = CSSPixelsToAppUnits(1);
1055 0 : mBorderWidthTable[NS_STYLE_BORDER_WIDTH_MEDIUM] = CSSPixelsToAppUnits(3);
1056 0 : mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THICK] = CSSPixelsToAppUnits(5);
1057 :
1058 0 : return NS_OK;
1059 : }
1060 :
1061 : // Note: We don't hold a reference on the shell; it has a reference to
1062 : // us
1063 : void
1064 0 : nsPresContext::SetShell(nsIPresShell* aShell)
1065 : {
1066 0 : if (mUserFontSet) {
1067 : // Clear out user font set if we have one
1068 0 : mUserFontSet->Destroy();
1069 0 : NS_RELEASE(mUserFontSet);
1070 : }
1071 :
1072 0 : if (mShell) {
1073 : // Remove ourselves as the charset observer from the shell's doc, because
1074 : // this shell may be going away for good.
1075 0 : nsIDocument *doc = mShell->GetDocument();
1076 0 : if (doc) {
1077 0 : doc->RemoveCharSetObserver(this);
1078 : }
1079 : }
1080 :
1081 0 : mShell = aShell;
1082 :
1083 0 : if (mShell) {
1084 0 : nsIDocument *doc = mShell->GetDocument();
1085 0 : NS_ASSERTION(doc, "expect document here");
1086 0 : if (doc) {
1087 : // Have to update PresContext's mDocument before calling any other methods.
1088 0 : mDocument = doc;
1089 : }
1090 : // Initialize our state from the user preferences, now that we
1091 : // have a presshell, and hence a document.
1092 0 : GetUserPreferences();
1093 :
1094 0 : if (doc) {
1095 0 : nsIURI *docURI = doc->GetDocumentURI();
1096 :
1097 0 : if (IsDynamic() && docURI) {
1098 0 : bool isChrome = false;
1099 0 : bool isRes = false;
1100 0 : docURI->SchemeIs("chrome", &isChrome);
1101 0 : docURI->SchemeIs("resource", &isRes);
1102 :
1103 0 : if (!isChrome && !isRes)
1104 0 : mImageAnimationMode = mImageAnimationModePref;
1105 : else
1106 0 : mImageAnimationMode = imgIContainer::kNormalAnimMode;
1107 : }
1108 :
1109 0 : if (mLangService) {
1110 0 : doc->AddCharSetObserver(this);
1111 0 : UpdateCharSet(doc->GetDocumentCharacterSet());
1112 : }
1113 : }
1114 : } else {
1115 0 : if (mTransitionManager) {
1116 0 : mTransitionManager->Disconnect();
1117 0 : mTransitionManager = nsnull;
1118 : }
1119 0 : if (mAnimationManager) {
1120 0 : mAnimationManager->Disconnect();
1121 0 : mAnimationManager = nsnull;
1122 : }
1123 :
1124 0 : if (IsRoot()) {
1125 : // Have to cancel our plugin geometry timer, because the
1126 : // callback for that depends on a non-null presshell.
1127 0 : static_cast<nsRootPresContext*>(this)->CancelUpdatePluginGeometryTimer();
1128 : }
1129 : }
1130 0 : }
1131 :
1132 : void
1133 0 : nsPresContext::DestroyImageLoaders()
1134 : {
1135 : // Destroy image loaders. This is important to do when frames are being
1136 : // destroyed because imageloaders can have pointers to frames and we don't
1137 : // want those pointers to outlive the destruction of the frame arena.
1138 0 : for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i) {
1139 0 : mImageLoaders[i].Enumerate(destroy_loads, nsnull);
1140 0 : mImageLoaders[i].Clear();
1141 : }
1142 0 : }
1143 :
1144 : void
1145 0 : nsPresContext::DoChangeCharSet(const nsCString& aCharSet)
1146 : {
1147 0 : UpdateCharSet(aCharSet);
1148 0 : mDeviceContext->FlushFontCache();
1149 0 : RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
1150 0 : }
1151 :
1152 : void
1153 0 : nsPresContext::UpdateCharSet(const nsCString& aCharSet)
1154 : {
1155 0 : if (mLangService) {
1156 0 : NS_IF_RELEASE(mLanguage);
1157 0 : mLanguage = mLangService->LookupCharSet(aCharSet.get()).get(); // addrefs
1158 : // this will be a language group (or script) code rather than a true language code
1159 :
1160 : // bug 39570: moved from nsLanguageAtomService::LookupCharSet()
1161 0 : if (mLanguage == nsGkAtoms::Unicode) {
1162 0 : NS_RELEASE(mLanguage);
1163 0 : NS_IF_ADDREF(mLanguage = mLangService->GetLocaleLanguage());
1164 : }
1165 0 : ResetCachedFontPrefs();
1166 : }
1167 : #ifdef IBMBIDI
1168 : //ahmed
1169 :
1170 0 : switch (GET_BIDI_OPTION_TEXTTYPE(GetBidi())) {
1171 :
1172 : case IBMBIDI_TEXTTYPE_LOGICAL:
1173 0 : SetVisualMode(false);
1174 0 : break;
1175 :
1176 : case IBMBIDI_TEXTTYPE_VISUAL:
1177 0 : SetVisualMode(true);
1178 0 : break;
1179 :
1180 : case IBMBIDI_TEXTTYPE_CHARSET:
1181 : default:
1182 0 : SetVisualMode(IsVisualCharset(aCharSet));
1183 : }
1184 : #endif // IBMBIDI
1185 0 : }
1186 :
1187 : NS_IMETHODIMP
1188 0 : nsPresContext::Observe(nsISupports* aSubject,
1189 : const char* aTopic,
1190 : const PRUnichar* aData)
1191 : {
1192 0 : if (!nsCRT::strcmp(aTopic, "charset")) {
1193 : nsRefPtr<CharSetChangingRunnable> runnable =
1194 0 : new CharSetChangingRunnable(this, NS_LossyConvertUTF16toASCII(aData));
1195 0 : return NS_DispatchToCurrentThread(runnable);
1196 : }
1197 :
1198 0 : NS_WARNING("unrecognized topic in nsPresContext::Observe");
1199 0 : return NS_ERROR_FAILURE;
1200 : }
1201 :
1202 : static nsPresContext*
1203 0 : GetParentPresContext(nsPresContext* aPresContext)
1204 : {
1205 0 : nsIPresShell* shell = aPresContext->GetPresShell();
1206 0 : if (shell) {
1207 0 : nsIFrame* rootFrame = shell->FrameManager()->GetRootFrame();
1208 0 : if (rootFrame) {
1209 0 : nsIFrame* f = nsLayoutUtils::GetCrossDocParentFrame(rootFrame);
1210 0 : if (f)
1211 0 : return f->PresContext();
1212 : }
1213 : }
1214 0 : return nsnull;
1215 : }
1216 :
1217 : // We may want to replace this with something faster, maybe caching the root prescontext
1218 : nsRootPresContext*
1219 0 : nsPresContext::GetRootPresContext()
1220 : {
1221 0 : nsPresContext* pc = this;
1222 0 : for (;;) {
1223 0 : nsPresContext* parent = GetParentPresContext(pc);
1224 0 : if (!parent)
1225 : break;
1226 0 : pc = parent;
1227 : }
1228 0 : return pc->IsRoot() ? static_cast<nsRootPresContext*>(pc) : nsnull;
1229 : }
1230 :
1231 : void
1232 0 : nsPresContext::CompatibilityModeChanged()
1233 : {
1234 0 : if (!mShell)
1235 0 : return;
1236 :
1237 : // enable/disable the QuirkSheet
1238 : mShell->StyleSet()->
1239 0 : EnableQuirkStyleSheet(CompatibilityMode() == eCompatibility_NavQuirks);
1240 : }
1241 :
1242 : // Helper function for setting Anim Mode on image
1243 0 : static void SetImgAnimModeOnImgReq(imgIRequest* aImgReq, PRUint16 aMode)
1244 : {
1245 0 : if (aImgReq) {
1246 0 : nsCOMPtr<imgIContainer> imgCon;
1247 0 : aImgReq->GetImage(getter_AddRefs(imgCon));
1248 0 : if (imgCon) {
1249 0 : imgCon->SetAnimationMode(aMode);
1250 : }
1251 : }
1252 0 : }
1253 :
1254 : // Enumeration call back for HashTable
1255 : static PLDHashOperator
1256 0 : set_animation_mode(const void * aKey, nsRefPtr<nsImageLoader>& aData, void* closure)
1257 : {
1258 0 : for (nsImageLoader *loader = aData; loader;
1259 : loader = loader->GetNextLoader()) {
1260 0 : imgIRequest* imgReq = loader->GetRequest();
1261 0 : SetImgAnimModeOnImgReq(imgReq, (PRUint16)NS_PTR_TO_INT32(closure));
1262 : }
1263 0 : return PL_DHASH_NEXT;
1264 : }
1265 :
1266 : // IMPORTANT: Assumption is that all images for a Presentation
1267 : // have the same Animation Mode (pavlov said this was OK)
1268 : //
1269 : // Walks content and set the animation mode
1270 : // this is a way to turn on/off image animations
1271 0 : void nsPresContext::SetImgAnimations(nsIContent *aParent, PRUint16 aMode)
1272 : {
1273 0 : nsCOMPtr<nsIImageLoadingContent> imgContent(do_QueryInterface(aParent));
1274 0 : if (imgContent) {
1275 0 : nsCOMPtr<imgIRequest> imgReq;
1276 0 : imgContent->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
1277 0 : getter_AddRefs(imgReq));
1278 0 : SetImgAnimModeOnImgReq(imgReq, aMode);
1279 : }
1280 :
1281 0 : PRUint32 count = aParent->GetChildCount();
1282 0 : for (PRUint32 i = 0; i < count; ++i) {
1283 0 : SetImgAnimations(aParent->GetChildAt(i), aMode);
1284 : }
1285 0 : }
1286 :
1287 : void
1288 0 : nsPresContext::SetSMILAnimations(nsIDocument *aDoc, PRUint16 aNewMode,
1289 : PRUint16 aOldMode)
1290 : {
1291 0 : if (aDoc->HasAnimationController()) {
1292 0 : nsSMILAnimationController* controller = aDoc->GetAnimationController();
1293 0 : switch (aNewMode)
1294 : {
1295 : case imgIContainer::kNormalAnimMode:
1296 : case imgIContainer::kLoopOnceAnimMode:
1297 0 : if (aOldMode == imgIContainer::kDontAnimMode)
1298 0 : controller->Resume(nsSMILTimeContainer::PAUSE_USERPREF);
1299 0 : break;
1300 :
1301 : case imgIContainer::kDontAnimMode:
1302 0 : if (aOldMode != imgIContainer::kDontAnimMode)
1303 0 : controller->Pause(nsSMILTimeContainer::PAUSE_USERPREF);
1304 0 : break;
1305 : }
1306 : }
1307 0 : }
1308 :
1309 : void
1310 0 : nsPresContext::SetImageAnimationModeInternal(PRUint16 aMode)
1311 : {
1312 0 : NS_ASSERTION(aMode == imgIContainer::kNormalAnimMode ||
1313 : aMode == imgIContainer::kDontAnimMode ||
1314 : aMode == imgIContainer::kLoopOnceAnimMode, "Wrong Animation Mode is being set!");
1315 :
1316 : // Image animation mode cannot be changed when rendering to a printer.
1317 0 : if (!IsDynamic())
1318 0 : return;
1319 :
1320 : // Set the mode on the image loaders.
1321 0 : for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i)
1322 0 : mImageLoaders[i].Enumerate(set_animation_mode, NS_INT32_TO_PTR(aMode));
1323 :
1324 : // Now walk the content tree and set the animation mode
1325 : // on all the images.
1326 0 : if (mShell != nsnull) {
1327 0 : nsIDocument *doc = mShell->GetDocument();
1328 0 : if (doc) {
1329 0 : Element *rootElement = doc->GetRootElement();
1330 0 : if (rootElement) {
1331 0 : SetImgAnimations(rootElement, aMode);
1332 : }
1333 0 : SetSMILAnimations(doc, aMode, mImageAnimationMode);
1334 : }
1335 : }
1336 :
1337 0 : mImageAnimationMode = aMode;
1338 : }
1339 :
1340 : void
1341 0 : nsPresContext::SetImageAnimationModeExternal(PRUint16 aMode)
1342 : {
1343 0 : SetImageAnimationModeInternal(aMode);
1344 0 : }
1345 :
1346 : const nsFont*
1347 0 : nsPresContext::GetDefaultFont(PRUint8 aFontID, nsIAtom *aLanguage) const
1348 : {
1349 0 : const LangGroupFontPrefs *prefs = GetFontPrefsForLang(aLanguage);
1350 :
1351 : const nsFont *font;
1352 0 : switch (aFontID) {
1353 : // Special (our default variable width font and fixed width font)
1354 : case kPresContext_DefaultVariableFont_ID:
1355 0 : font = &prefs->mDefaultVariableFont;
1356 0 : break;
1357 : case kPresContext_DefaultFixedFont_ID:
1358 0 : font = &prefs->mDefaultFixedFont;
1359 0 : break;
1360 : // CSS
1361 : case kGenericFont_serif:
1362 0 : font = &prefs->mDefaultSerifFont;
1363 0 : break;
1364 : case kGenericFont_sans_serif:
1365 0 : font = &prefs->mDefaultSansSerifFont;
1366 0 : break;
1367 : case kGenericFont_monospace:
1368 0 : font = &prefs->mDefaultMonospaceFont;
1369 0 : break;
1370 : case kGenericFont_cursive:
1371 0 : font = &prefs->mDefaultCursiveFont;
1372 0 : break;
1373 : case kGenericFont_fantasy:
1374 0 : font = &prefs->mDefaultFantasyFont;
1375 0 : break;
1376 : default:
1377 0 : font = nsnull;
1378 0 : NS_ERROR("invalid arg");
1379 0 : break;
1380 : }
1381 0 : return font;
1382 : }
1383 :
1384 : void
1385 0 : nsPresContext::SetFullZoom(float aZoom)
1386 : {
1387 0 : if (!mShell || mFullZoom == aZoom) {
1388 0 : return;
1389 : }
1390 :
1391 : // Re-fetch the view manager's window dimensions in case there's a deferred
1392 : // resize which hasn't affected our mVisibleArea yet
1393 : nscoord oldWidthAppUnits, oldHeightAppUnits;
1394 0 : mShell->GetViewManager()->GetWindowDimensions(&oldWidthAppUnits, &oldHeightAppUnits);
1395 0 : float oldWidthDevPixels = oldWidthAppUnits / float(mCurAppUnitsPerDevPixel);
1396 0 : float oldHeightDevPixels = oldHeightAppUnits / float(mCurAppUnitsPerDevPixel);
1397 0 : mDeviceContext->SetPixelScale(aZoom);
1398 :
1399 0 : NS_ASSERTION(!mSupressResizeReflow, "two zooms happening at the same time? impossible!");
1400 0 : mSupressResizeReflow = true;
1401 :
1402 0 : mFullZoom = aZoom;
1403 0 : mShell->GetViewManager()->
1404 0 : SetWindowDimensions(NSToCoordRound(oldWidthDevPixels * AppUnitsPerDevPixel()),
1405 0 : NSToCoordRound(oldHeightDevPixels * AppUnitsPerDevPixel()));
1406 :
1407 0 : AppUnitsPerDevPixelChanged();
1408 :
1409 0 : mSupressResizeReflow = false;
1410 :
1411 0 : mCurAppUnitsPerDevPixel = AppUnitsPerDevPixel();
1412 : }
1413 :
1414 : void
1415 0 : nsPresContext::SetImageLoaders(nsIFrame* aTargetFrame,
1416 : ImageLoadType aType,
1417 : nsImageLoader* aImageLoaders)
1418 : {
1419 0 : NS_ASSERTION(mShell || !aImageLoaders,
1420 : "Shouldn't add new image loader after the shell is gone");
1421 :
1422 0 : nsRefPtr<nsImageLoader> oldLoaders;
1423 0 : mImageLoaders[aType].Get(aTargetFrame, getter_AddRefs(oldLoaders));
1424 :
1425 0 : if (aImageLoaders) {
1426 0 : mImageLoaders[aType].Put(aTargetFrame, aImageLoaders);
1427 0 : } else if (oldLoaders) {
1428 0 : mImageLoaders[aType].Remove(aTargetFrame);
1429 : }
1430 :
1431 0 : if (oldLoaders)
1432 0 : oldLoaders->Destroy();
1433 0 : }
1434 :
1435 : void
1436 0 : nsPresContext::SetupBackgroundImageLoaders(nsIFrame* aFrame,
1437 : const nsStyleBackground* aStyleBackground)
1438 : {
1439 0 : nsRefPtr<nsImageLoader> loaders;
1440 0 : NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT(i, aStyleBackground) {
1441 0 : if (aStyleBackground->mLayers[i].mImage.GetType() == eStyleImageType_Image) {
1442 0 : PRUint32 actions = nsImageLoader::ACTION_REDRAW_ON_DECODE;
1443 0 : imgIRequest *image = aStyleBackground->mLayers[i].mImage.GetImageData();
1444 0 : loaders = nsImageLoader::Create(aFrame, image, actions, loaders);
1445 : }
1446 : }
1447 0 : SetImageLoaders(aFrame, BACKGROUND_IMAGE, loaders);
1448 0 : }
1449 :
1450 : void
1451 0 : nsPresContext::SetupBorderImageLoaders(nsIFrame* aFrame,
1452 : const nsStyleBorder* aStyleBorder)
1453 : {
1454 : // We get called the first time we try to draw a border-image, and
1455 : // also when the border image changes (including when it changes from
1456 : // non-null to null).
1457 0 : imgIRequest *borderImage = aStyleBorder->GetBorderImage();
1458 0 : if (!borderImage) {
1459 0 : SetImageLoaders(aFrame, BORDER_IMAGE, nsnull);
1460 0 : return;
1461 : }
1462 :
1463 0 : PRUint32 actions = nsImageLoader::ACTION_REDRAW_ON_LOAD;
1464 : nsRefPtr<nsImageLoader> loader =
1465 0 : nsImageLoader::Create(aFrame, borderImage, actions, nsnull);
1466 0 : SetImageLoaders(aFrame, BORDER_IMAGE, loader);
1467 : }
1468 :
1469 : void
1470 0 : nsPresContext::StopImagesFor(nsIFrame* aTargetFrame)
1471 : {
1472 0 : for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i)
1473 0 : SetImageLoaders(aTargetFrame, ImageLoadType(i), nsnull);
1474 0 : }
1475 :
1476 : void
1477 0 : nsPresContext::SetContainer(nsISupports* aHandler)
1478 : {
1479 0 : mContainer = do_GetWeakReference(aHandler);
1480 0 : InvalidateIsChromeCache();
1481 0 : if (mContainer) {
1482 0 : GetDocumentColorPreferences();
1483 : }
1484 0 : }
1485 :
1486 : already_AddRefed<nsISupports>
1487 0 : nsPresContext::GetContainerInternal() const
1488 : {
1489 0 : nsISupports *result = nsnull;
1490 0 : if (mContainer)
1491 0 : CallQueryReferent(mContainer.get(), &result);
1492 :
1493 0 : return result;
1494 : }
1495 :
1496 : already_AddRefed<nsISupports>
1497 0 : nsPresContext::GetContainerExternal() const
1498 : {
1499 0 : return GetContainerInternal();
1500 : }
1501 :
1502 : #ifdef IBMBIDI
1503 : void
1504 0 : nsPresContext::SetBidiEnabled() const
1505 : {
1506 0 : if (mShell) {
1507 0 : nsIDocument *doc = mShell->GetDocument();
1508 0 : if (doc) {
1509 0 : doc->SetBidiEnabled();
1510 : }
1511 : }
1512 0 : }
1513 :
1514 : void
1515 0 : nsPresContext::SetBidi(PRUint32 aSource, bool aForceRestyle)
1516 : {
1517 : // Don't do all this stuff unless the options have changed.
1518 0 : if (aSource == GetBidi()) {
1519 0 : return;
1520 : }
1521 :
1522 0 : NS_ASSERTION(!(aForceRestyle && (GetBidi() == 0)),
1523 : "ForceReflow on new prescontext");
1524 :
1525 0 : Document()->SetBidiOptions(aSource);
1526 0 : if (IBMBIDI_TEXTDIRECTION_RTL == GET_BIDI_OPTION_DIRECTION(aSource)
1527 : || IBMBIDI_NUMERAL_HINDI == GET_BIDI_OPTION_NUMERAL(aSource)) {
1528 0 : SetBidiEnabled();
1529 : }
1530 0 : if (IBMBIDI_TEXTTYPE_VISUAL == GET_BIDI_OPTION_TEXTTYPE(aSource)) {
1531 0 : SetVisualMode(true);
1532 : }
1533 0 : else if (IBMBIDI_TEXTTYPE_LOGICAL == GET_BIDI_OPTION_TEXTTYPE(aSource)) {
1534 0 : SetVisualMode(false);
1535 : }
1536 : else {
1537 0 : nsIDocument* doc = mShell->GetDocument();
1538 0 : if (doc) {
1539 0 : SetVisualMode(IsVisualCharset(doc->GetDocumentCharacterSet()));
1540 : }
1541 : }
1542 0 : if (aForceRestyle && mShell) {
1543 : // Reconstruct the root document element's frame and its children,
1544 : // because we need to trigger frame reconstruction for direction change.
1545 0 : RebuildUserFontSet();
1546 0 : mShell->ReconstructFrames();
1547 : }
1548 : }
1549 :
1550 : PRUint32
1551 0 : nsPresContext::GetBidi() const
1552 : {
1553 0 : return Document()->GetBidiOptions();
1554 : }
1555 :
1556 : #endif //IBMBIDI
1557 :
1558 : bool
1559 0 : nsPresContext::IsTopLevelWindowInactive()
1560 : {
1561 0 : nsCOMPtr<nsIDocShellTreeItem> treeItem(do_QueryReferent(mContainer));
1562 0 : if (!treeItem)
1563 0 : return false;
1564 :
1565 0 : nsCOMPtr<nsIDocShellTreeItem> rootItem;
1566 0 : treeItem->GetRootTreeItem(getter_AddRefs(rootItem));
1567 0 : nsCOMPtr<nsPIDOMWindow> domWindow(do_GetInterface(rootItem));
1568 :
1569 0 : return domWindow && !domWindow->IsActive();
1570 : }
1571 :
1572 : nsITheme*
1573 0 : nsPresContext::GetTheme()
1574 : {
1575 0 : if (!sNoTheme && !mTheme) {
1576 0 : mTheme = do_GetService("@mozilla.org/chrome/chrome-native-theme;1");
1577 0 : if (!mTheme)
1578 0 : sNoTheme = true;
1579 : }
1580 :
1581 0 : return mTheme;
1582 : }
1583 :
1584 : void
1585 0 : nsPresContext::ThemeChanged()
1586 : {
1587 0 : if (!mPendingThemeChanged) {
1588 0 : sLookAndFeelChanged = true;
1589 0 : sThemeChanged = true;
1590 :
1591 : nsCOMPtr<nsIRunnable> ev =
1592 0 : NS_NewRunnableMethod(this, &nsPresContext::ThemeChangedInternal);
1593 0 : if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
1594 0 : mPendingThemeChanged = true;
1595 : }
1596 : }
1597 0 : }
1598 :
1599 : void
1600 0 : nsPresContext::ThemeChangedInternal()
1601 : {
1602 0 : mPendingThemeChanged = false;
1603 :
1604 : // Tell the theme that it changed, so it can flush any handles to stale theme
1605 : // data.
1606 0 : if (mTheme && sThemeChanged) {
1607 0 : mTheme->ThemeChanged();
1608 0 : sThemeChanged = false;
1609 : }
1610 :
1611 : // Clear all cached LookAndFeel colors.
1612 0 : if (sLookAndFeelChanged) {
1613 0 : LookAndFeel::Refresh();
1614 0 : sLookAndFeelChanged = false;
1615 : }
1616 :
1617 : // This will force the system metrics to be generated the next time they're used
1618 0 : nsCSSRuleProcessor::FreeSystemMetrics();
1619 :
1620 : // Changes to system metrics can change media queries on them.
1621 0 : MediaFeatureValuesChanged(true);
1622 :
1623 : // Changes in theme can change system colors (whose changes are
1624 : // properly reflected in computed style data), system fonts (whose
1625 : // changes are not), and -moz-appearance (whose changes likewise are
1626 : // not), so we need to reflow.
1627 0 : RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
1628 0 : }
1629 :
1630 : void
1631 0 : nsPresContext::SysColorChanged()
1632 : {
1633 0 : if (!mPendingSysColorChanged) {
1634 0 : sLookAndFeelChanged = true;
1635 : nsCOMPtr<nsIRunnable> ev =
1636 0 : NS_NewRunnableMethod(this, &nsPresContext::SysColorChangedInternal);
1637 0 : if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
1638 0 : mPendingSysColorChanged = true;
1639 : }
1640 : }
1641 0 : }
1642 :
1643 : void
1644 0 : nsPresContext::SysColorChangedInternal()
1645 : {
1646 0 : mPendingSysColorChanged = false;
1647 :
1648 0 : if (sLookAndFeelChanged) {
1649 : // Don't use the cached values for the system colors
1650 0 : LookAndFeel::Refresh();
1651 0 : sLookAndFeelChanged = false;
1652 : }
1653 :
1654 : // Reset default background and foreground colors for the document since
1655 : // they may be using system colors
1656 0 : GetDocumentColorPreferences();
1657 :
1658 : // The system color values are computed to colors in the style data,
1659 : // so normal style data comparison is sufficient here.
1660 0 : RebuildAllStyleData(nsChangeHint(0));
1661 0 : }
1662 :
1663 : void
1664 0 : nsPresContext::RebuildAllStyleData(nsChangeHint aExtraHint)
1665 : {
1666 0 : if (!mShell) {
1667 : // We must have been torn down. Nothing to do here.
1668 0 : return;
1669 : }
1670 :
1671 0 : RebuildUserFontSet();
1672 0 : AnimationManager()->KeyframesListIsDirty();
1673 :
1674 0 : mShell->FrameConstructor()->RebuildAllStyleData(aExtraHint);
1675 : }
1676 :
1677 : void
1678 0 : nsPresContext::PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint)
1679 : {
1680 0 : if (!mShell) {
1681 : // We must have been torn down. Nothing to do here.
1682 0 : return;
1683 : }
1684 0 : mShell->FrameConstructor()->PostRebuildAllStyleDataEvent(aExtraHint);
1685 : }
1686 :
1687 : void
1688 0 : nsPresContext::MediaFeatureValuesChanged(bool aCallerWillRebuildStyleData)
1689 : {
1690 0 : mPendingMediaFeatureValuesChanged = false;
1691 0 : if (mShell &&
1692 0 : mShell->StyleSet()->MediumFeaturesChanged(this) &&
1693 0 : !aCallerWillRebuildStyleData) {
1694 0 : RebuildAllStyleData(nsChangeHint(0));
1695 : }
1696 :
1697 0 : if (!nsContentUtils::IsSafeToRunScript()) {
1698 0 : NS_ABORT_IF_FALSE(mDocument->IsBeingUsedAsImage(),
1699 : "How did we get here? Are we failing to notify "
1700 : "listeners that we should notify?");
1701 0 : return;
1702 : }
1703 :
1704 : // Media query list listeners should be notified from a queued task
1705 : // (in HTML5 terms), although we also want to notify them on certain
1706 : // flushes. (We're already running off an event.)
1707 : //
1708 : // Note that we do this after the new style from media queries in
1709 : // style sheets has been computed.
1710 :
1711 0 : if (!PR_CLIST_IS_EMPTY(&mDOMMediaQueryLists)) {
1712 : // We build a list of all the notifications we're going to send
1713 : // before we send any of them. (The spec says the notifications
1714 : // should be a queued task, so any removals that happen during the
1715 : // notifications shouldn't affect what gets notified.) Furthermore,
1716 : // we hold strong pointers to everything we're going to make
1717 : // notification calls to, since each notification involves calling
1718 : // arbitrary script that might otherwise destroy these objects, or,
1719 : // for that matter, |this|.
1720 : //
1721 : // Note that we intentionally send the notifications to media query
1722 : // list in the order they were created and, for each list, to the
1723 : // listeners in the order added.
1724 0 : nsDOMMediaQueryList::NotifyList notifyList;
1725 0 : for (PRCList *l = PR_LIST_HEAD(&mDOMMediaQueryLists);
1726 : l != &mDOMMediaQueryLists; l = PR_NEXT_LINK(l)) {
1727 0 : nsDOMMediaQueryList *mql = static_cast<nsDOMMediaQueryList*>(l);
1728 0 : mql->MediumFeaturesChanged(notifyList);
1729 : }
1730 :
1731 0 : if (!notifyList.IsEmpty()) {
1732 0 : nsPIDOMWindow *win = mDocument->GetInnerWindow();
1733 0 : nsCOMPtr<nsIDOMEventTarget> et = do_QueryInterface(win);
1734 0 : nsCxPusher pusher;
1735 :
1736 0 : for (PRUint32 i = 0, i_end = notifyList.Length(); i != i_end; ++i) {
1737 0 : if (pusher.RePush(et)) {
1738 0 : nsDOMMediaQueryList::HandleChangeData &d = notifyList[i];
1739 0 : d.listener->HandleChange(d.mql);
1740 : }
1741 : }
1742 : }
1743 :
1744 : // NOTE: When |notifyList| goes out of scope, our destructor could run.
1745 : }
1746 : }
1747 :
1748 : void
1749 0 : nsPresContext::PostMediaFeatureValuesChangedEvent()
1750 : {
1751 : // FIXME: We should probably replace this event with use of
1752 : // nsRefreshDriver::AddStyleFlushObserver (except the pres shell would
1753 : // need to track whether it's been added).
1754 0 : if (!mPendingMediaFeatureValuesChanged) {
1755 : nsCOMPtr<nsIRunnable> ev =
1756 0 : NS_NewRunnableMethod(this, &nsPresContext::HandleMediaFeatureValuesChangedEvent);
1757 0 : if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
1758 0 : mPendingMediaFeatureValuesChanged = true;
1759 0 : mDocument->SetNeedStyleFlush();
1760 : }
1761 : }
1762 0 : }
1763 :
1764 : void
1765 0 : nsPresContext::HandleMediaFeatureValuesChangedEvent()
1766 : {
1767 : // Null-check mShell in case the shell has been destroyed (and the
1768 : // event is the only thing holding the pres context alive).
1769 0 : if (mPendingMediaFeatureValuesChanged && mShell) {
1770 0 : MediaFeatureValuesChanged(false);
1771 : }
1772 0 : }
1773 :
1774 : void
1775 0 : nsPresContext::MatchMedia(const nsAString& aMediaQueryList,
1776 : nsIDOMMediaQueryList** aResult)
1777 : {
1778 : nsRefPtr<nsDOMMediaQueryList> result =
1779 0 : new nsDOMMediaQueryList(this, aMediaQueryList);
1780 :
1781 : // Insert the new item at the end of the linked list.
1782 0 : PR_INSERT_BEFORE(result, &mDOMMediaQueryLists);
1783 :
1784 0 : result.forget(aResult);
1785 0 : }
1786 :
1787 : void
1788 0 : nsPresContext::SetPaginatedScrolling(bool aPaginated)
1789 : {
1790 0 : if (mType == eContext_PrintPreview || mType == eContext_PageLayout)
1791 0 : mCanPaginatedScroll = aPaginated;
1792 0 : }
1793 :
1794 : void
1795 0 : nsPresContext::SetPrintSettings(nsIPrintSettings *aPrintSettings)
1796 : {
1797 0 : if (mMedium == nsGkAtoms::print)
1798 0 : mPrintSettings = aPrintSettings;
1799 0 : }
1800 :
1801 : bool
1802 0 : nsPresContext::EnsureVisible()
1803 : {
1804 0 : nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mContainer));
1805 0 : if (docShell) {
1806 0 : nsCOMPtr<nsIContentViewer> cv;
1807 0 : docShell->GetContentViewer(getter_AddRefs(cv));
1808 : // Make sure this is the content viewer we belong with
1809 0 : if (cv) {
1810 0 : nsRefPtr<nsPresContext> currentPresContext;
1811 0 : cv->GetPresContext(getter_AddRefs(currentPresContext));
1812 0 : if (currentPresContext == this) {
1813 : // OK, this is us. We want to call Show() on the content viewer.
1814 0 : cv->Show();
1815 0 : return true;
1816 : }
1817 : }
1818 : }
1819 0 : return false;
1820 : }
1821 :
1822 : #ifdef MOZ_REFLOW_PERF
1823 : void
1824 0 : nsPresContext::CountReflows(const char * aName, nsIFrame * aFrame)
1825 : {
1826 0 : if (mShell) {
1827 0 : mShell->CountReflows(aName, aFrame);
1828 : }
1829 0 : }
1830 : #endif
1831 :
1832 : bool
1833 0 : nsPresContext::IsChromeSlow() const
1834 : {
1835 0 : bool isChrome = false;
1836 0 : nsCOMPtr<nsISupports> container = GetContainer();
1837 0 : if (container) {
1838 : nsresult result;
1839 0 : nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(container, &result));
1840 0 : if (NS_SUCCEEDED(result) && docShell) {
1841 : PRInt32 docShellType;
1842 0 : result = docShell->GetItemType(&docShellType);
1843 0 : if (NS_SUCCEEDED(result)) {
1844 0 : isChrome = nsIDocShellTreeItem::typeChrome == docShellType;
1845 : }
1846 : }
1847 : }
1848 0 : mIsChrome = isChrome;
1849 0 : mIsChromeIsCached = true;
1850 0 : return mIsChrome;
1851 : }
1852 :
1853 : void
1854 0 : nsPresContext::InvalidateIsChromeCacheExternal()
1855 : {
1856 0 : InvalidateIsChromeCacheInternal();
1857 0 : }
1858 :
1859 : /* virtual */ bool
1860 0 : nsPresContext::HasAuthorSpecifiedRules(nsIFrame *aFrame, PRUint32 ruleTypeMask) const
1861 : {
1862 : return
1863 : nsRuleNode::HasAuthorSpecifiedRules(aFrame->GetStyleContext(),
1864 : ruleTypeMask,
1865 0 : UseDocumentColors());
1866 : }
1867 :
1868 : gfxUserFontSet*
1869 0 : nsPresContext::GetUserFontSetInternal()
1870 : {
1871 : // We want to initialize the user font set lazily the first time the
1872 : // user asks for it, rather than building it too early and forcing
1873 : // rule cascade creation. Thus we try to enforce the invariant that
1874 : // we *never* build the user font set until the first call to
1875 : // GetUserFontSet. However, once it's been requested, we can't wait
1876 : // for somebody to call GetUserFontSet in order to rebuild it (see
1877 : // comments below in RebuildUserFontSet for why).
1878 : #ifdef DEBUG
1879 0 : bool userFontSetGottenBefore = mGetUserFontSetCalled;
1880 : #endif
1881 : // Set mGetUserFontSetCalled up front, so that FlushUserFontSet will actually
1882 : // flush.
1883 0 : mGetUserFontSetCalled = true;
1884 0 : if (mUserFontSetDirty) {
1885 : // If this assertion fails, and there have actually been changes to
1886 : // @font-face rules, then we will call StyleChangeReflow in
1887 : // FlushUserFontSet. If we're in the middle of reflow,
1888 : // that's a bad thing to do, and the caller was responsible for
1889 : // flushing first. If we're not (e.g., in frame construction), it's
1890 : // ok.
1891 0 : NS_ASSERTION(!userFontSetGottenBefore || !mShell->IsReflowLocked(),
1892 : "FlushUserFontSet should have been called first");
1893 0 : FlushUserFontSet();
1894 : }
1895 :
1896 0 : return mUserFontSet;
1897 : }
1898 :
1899 : gfxUserFontSet*
1900 0 : nsPresContext::GetUserFontSetExternal()
1901 : {
1902 0 : return GetUserFontSetInternal();
1903 : }
1904 :
1905 : void
1906 0 : nsPresContext::FlushUserFontSet()
1907 : {
1908 0 : if (!mShell) {
1909 0 : return; // we've been torn down
1910 : }
1911 :
1912 0 : if (!mGetUserFontSetCalled) {
1913 0 : return; // No one cares about this font set yet, but we want to be careful
1914 : // to not unset our mUserFontSetDirty bit, so when someone really
1915 : // does we'll create it.
1916 : }
1917 :
1918 0 : if (mUserFontSetDirty) {
1919 0 : if (gfxPlatform::GetPlatform()->DownloadableFontsEnabled()) {
1920 0 : nsTArray<nsFontFaceRuleContainer> rules;
1921 0 : if (!mShell->StyleSet()->AppendFontFaceRules(this, rules)) {
1922 0 : if (mUserFontSet) {
1923 0 : mUserFontSet->Destroy();
1924 0 : NS_RELEASE(mUserFontSet);
1925 : }
1926 : return;
1927 : }
1928 :
1929 0 : bool changed = false;
1930 :
1931 0 : if (rules.Length() == 0) {
1932 0 : if (mUserFontSet) {
1933 0 : mUserFontSet->Destroy();
1934 0 : NS_RELEASE(mUserFontSet);
1935 0 : changed = true;
1936 : }
1937 : } else {
1938 0 : if (!mUserFontSet) {
1939 0 : mUserFontSet = new nsUserFontSet(this);
1940 0 : NS_ADDREF(mUserFontSet);
1941 : }
1942 0 : changed = mUserFontSet->UpdateRules(rules);
1943 : }
1944 :
1945 : // We need to enqueue a style change reflow (for later) to
1946 : // reflect that we're modifying @font-face rules. (However,
1947 : // without a reflow, nothing will happen to start any downloads
1948 : // that are needed.)
1949 0 : if (changed) {
1950 0 : UserFontSetUpdated();
1951 : }
1952 : }
1953 :
1954 0 : mUserFontSetDirty = false;
1955 : }
1956 : }
1957 :
1958 : void
1959 0 : nsPresContext::RebuildUserFontSet()
1960 : {
1961 0 : if (!mGetUserFontSetCalled) {
1962 : // We want to lazily build the user font set the first time it's
1963 : // requested (so we don't force creation of rule cascades too
1964 : // early), so don't do anything now.
1965 0 : return;
1966 : }
1967 :
1968 0 : mUserFontSetDirty = true;
1969 0 : mDocument->SetNeedStyleFlush();
1970 :
1971 : // Somebody has already asked for the user font set, so we need to
1972 : // post an event to rebuild it. Setting the user font set to be dirty
1973 : // and lazily rebuilding it isn't sufficient, since it is only the act
1974 : // of rebuilding it that will trigger the style change reflow that
1975 : // calls GetUserFontSet. (This reflow causes rebuilding of text runs,
1976 : // which starts font loads, whose completion causes another style
1977 : // change reflow).
1978 0 : if (!mPostedFlushUserFontSet) {
1979 : nsCOMPtr<nsIRunnable> ev =
1980 0 : NS_NewRunnableMethod(this, &nsPresContext::HandleRebuildUserFontSet);
1981 0 : if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
1982 0 : mPostedFlushUserFontSet = true;
1983 : }
1984 : }
1985 : }
1986 :
1987 : void
1988 0 : nsPresContext::UserFontSetUpdated()
1989 : {
1990 0 : if (!mShell)
1991 0 : return;
1992 :
1993 : // Changes to the set of available fonts can cause updates to layout by:
1994 : //
1995 : // 1. Changing the font used for text, which changes anything that
1996 : // depends on text measurement, including line breaking and
1997 : // intrinsic widths, and any other parts of layout that depend on
1998 : // font metrics. This requires a style change reflow to update.
1999 : //
2000 : // 2. Changing the value of the 'ex' and 'ch' units in style data,
2001 : // which also depend on font metrics. Updating this information
2002 : // requires rebuilding the rule tree from the top, avoiding the
2003 : // reuse of cached data even when no style rules have changed.
2004 :
2005 0 : PostRebuildAllStyleDataEvent(NS_STYLE_HINT_REFLOW);
2006 : }
2007 :
2008 : bool
2009 0 : nsPresContext::EnsureSafeToHandOutCSSRules()
2010 : {
2011 : nsCSSStyleSheet::EnsureUniqueInnerResult res =
2012 0 : mShell->StyleSet()->EnsureUniqueInnerOnCSSSheets();
2013 0 : if (res == nsCSSStyleSheet::eUniqueInner_AlreadyUnique) {
2014 : // Nothing to do.
2015 0 : return true;
2016 : }
2017 0 : if (res == nsCSSStyleSheet::eUniqueInner_CloneFailed) {
2018 0 : return false;
2019 : }
2020 :
2021 0 : NS_ABORT_IF_FALSE(res == nsCSSStyleSheet::eUniqueInner_ClonedInner,
2022 : "unexpected result");
2023 0 : RebuildAllStyleData(nsChangeHint(0));
2024 0 : return true;
2025 : }
2026 :
2027 : void
2028 0 : nsPresContext::FireDOMPaintEvent()
2029 : {
2030 0 : nsPIDOMWindow* ourWindow = mDocument->GetWindow();
2031 0 : if (!ourWindow)
2032 0 : return;
2033 :
2034 0 : nsCOMPtr<nsIDOMEventTarget> dispatchTarget = do_QueryInterface(ourWindow);
2035 0 : nsCOMPtr<nsIDOMEventTarget> eventTarget = dispatchTarget;
2036 0 : if (!IsChrome()) {
2037 0 : bool notifyContent = mSendAfterPaintToContent;
2038 :
2039 0 : if (notifyContent) {
2040 : // If the pref is set, we still don't post events when they're
2041 : // entirely cross-doc.
2042 0 : notifyContent = false;
2043 0 : for (PRUint32 i = 0; i < mInvalidateRequests.mRequests.Length(); ++i) {
2044 0 : if (!(mInvalidateRequests.mRequests[i].mFlags &
2045 0 : nsIFrame::INVALIDATE_CROSS_DOC)) {
2046 0 : notifyContent = true;
2047 : }
2048 : }
2049 : }
2050 0 : if (!notifyContent) {
2051 : // Don't tell the window about this event, it should not know that
2052 : // something happened in a subdocument. Tell only the chrome event handler.
2053 : // (Events sent to the window get propagated to the chrome event handler
2054 : // automatically.)
2055 0 : dispatchTarget = do_QueryInterface(ourWindow->GetParentTarget());
2056 0 : if (!dispatchTarget) {
2057 : return;
2058 : }
2059 : }
2060 : }
2061 : // Events sent to the window get propagated to the chrome event handler
2062 : // automatically.
2063 0 : nsCOMPtr<nsIDOMEvent> event;
2064 : // This will empty our list in case dispatching the event causes more damage
2065 : // (hopefully it won't, or we're likely to get an infinite loop! At least
2066 : // it won't be blocking app execution though).
2067 0 : NS_NewDOMNotifyPaintEvent(getter_AddRefs(event), this, nsnull,
2068 : NS_AFTERPAINT,
2069 0 : &mInvalidateRequests);
2070 0 : nsCOMPtr<nsIPrivateDOMEvent> pEvent = do_QueryInterface(event);
2071 0 : if (!pEvent) return;
2072 :
2073 : // Even if we're not telling the window about the event (so eventTarget is
2074 : // the chrome event handler, not the window), the window is still
2075 : // logically the event target.
2076 0 : pEvent->SetTarget(eventTarget);
2077 0 : pEvent->SetTrusted(true);
2078 0 : nsEventDispatcher::DispatchDOMEvent(dispatchTarget, nsnull, event, this, nsnull);
2079 : }
2080 :
2081 : static bool
2082 0 : MayHavePaintEventListener(nsPIDOMWindow* aInnerWindow)
2083 : {
2084 0 : if (!aInnerWindow)
2085 0 : return false;
2086 0 : if (aInnerWindow->HasPaintEventListeners())
2087 0 : return true;
2088 :
2089 0 : nsIDOMEventTarget* parentTarget = aInnerWindow->GetParentTarget();
2090 0 : if (!parentTarget)
2091 0 : return false;
2092 :
2093 0 : nsEventListenerManager* manager = nsnull;
2094 0 : if ((manager = parentTarget->GetListenerManager(false)) &&
2095 0 : manager->MayHavePaintEventListener()) {
2096 0 : return true;
2097 : }
2098 :
2099 0 : nsCOMPtr<nsINode> node;
2100 0 : if (parentTarget != aInnerWindow->GetChromeEventHandler()) {
2101 : nsCOMPtr<nsIInProcessContentFrameMessageManager> mm =
2102 0 : do_QueryInterface(parentTarget);
2103 0 : if (mm) {
2104 0 : node = mm->GetOwnerContent();
2105 : }
2106 : }
2107 :
2108 0 : if (!node) {
2109 0 : node = do_QueryInterface(parentTarget);
2110 : }
2111 0 : if (node)
2112 0 : return MayHavePaintEventListener(node->OwnerDoc()->GetInnerWindow());
2113 :
2114 0 : nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(parentTarget);
2115 0 : if (window)
2116 0 : return MayHavePaintEventListener(window);
2117 :
2118 0 : nsCOMPtr<nsPIWindowRoot> root = do_QueryInterface(parentTarget);
2119 : nsIDOMEventTarget* tabChildGlobal;
2120 : return root &&
2121 0 : (tabChildGlobal = root->GetParentTarget()) &&
2122 0 : (manager = tabChildGlobal->GetListenerManager(false)) &&
2123 0 : manager->MayHavePaintEventListener();
2124 : }
2125 :
2126 : bool
2127 0 : nsPresContext::MayHavePaintEventListener()
2128 : {
2129 0 : return ::MayHavePaintEventListener(mDocument->GetInnerWindow());
2130 : }
2131 :
2132 : void
2133 0 : nsPresContext::NotifyInvalidation(const nsRect& aRect, PRUint32 aFlags)
2134 : {
2135 : // If there is no paint event listener, then we don't need to fire
2136 : // the asynchronous event. We don't even need to record invalidation.
2137 : // MayHavePaintEventListener is pretty cheap and we could make it
2138 : // even cheaper by providing a more efficient
2139 : // nsPIDOMWindow::GetListenerManager.
2140 0 : if (aRect.IsEmpty() || !MayHavePaintEventListener())
2141 0 : return;
2142 :
2143 : nsPresContext* pc;
2144 0 : for (pc = this; pc; pc = GetParentPresContext(pc)) {
2145 0 : if (pc->mFireAfterPaintEvents)
2146 0 : break;
2147 0 : pc->mFireAfterPaintEvents = true;
2148 : }
2149 0 : if (!pc) {
2150 0 : nsRootPresContext* rpc = GetRootPresContext();
2151 0 : if (rpc) {
2152 0 : rpc->EnsureEventualDidPaintEvent();
2153 : }
2154 : }
2155 :
2156 : nsInvalidateRequestList::Request* request =
2157 0 : mInvalidateRequests.mRequests.AppendElement();
2158 0 : if (!request)
2159 0 : return;
2160 :
2161 0 : request->mRect = aRect;
2162 0 : request->mFlags = aFlags;
2163 : }
2164 :
2165 : static bool
2166 0 : NotifyDidPaintSubdocumentCallback(nsIDocument* aDocument, void* aData)
2167 : {
2168 0 : nsIPresShell* shell = aDocument->GetShell();
2169 0 : if (shell) {
2170 0 : nsPresContext* pc = shell->GetPresContext();
2171 0 : if (pc) {
2172 0 : pc->NotifyDidPaintForSubtree();
2173 : }
2174 : }
2175 0 : return true;
2176 : }
2177 :
2178 : void
2179 0 : nsPresContext::NotifyDidPaintForSubtree()
2180 : {
2181 0 : if (!mFireAfterPaintEvents)
2182 0 : return;
2183 0 : mFireAfterPaintEvents = false;
2184 :
2185 0 : if (IsRoot()) {
2186 0 : static_cast<nsRootPresContext*>(this)->CancelDidPaintTimer();
2187 : }
2188 :
2189 0 : if (!mInvalidateRequests.mRequests.IsEmpty()) {
2190 : nsCOMPtr<nsIRunnable> ev =
2191 0 : NS_NewRunnableMethod(this, &nsPresContext::FireDOMPaintEvent);
2192 0 : nsContentUtils::AddScriptRunner(ev);
2193 : }
2194 :
2195 0 : mDocument->EnumerateSubDocuments(NotifyDidPaintSubdocumentCallback, nsnull);
2196 : }
2197 :
2198 : bool
2199 0 : nsPresContext::HasCachedStyleData()
2200 : {
2201 0 : return mShell && mShell->StyleSet()->HasCachedStyleData();
2202 : }
2203 :
2204 : static bool sGotInterruptEnv = false;
2205 : enum InterruptMode {
2206 : ModeRandom,
2207 : ModeCounter,
2208 : ModeEvent
2209 : };
2210 : // Controlled by the GECKO_REFLOW_INTERRUPT_MODE env var; allowed values are
2211 : // "random" (except on Windows) or "counter". If neither is used, the mode is
2212 : // ModeEvent.
2213 : static InterruptMode sInterruptMode = ModeEvent;
2214 : // Used for the "random" mode. Controlled by the GECKO_REFLOW_INTERRUPT_SEED
2215 : // env var.
2216 : static PRUint32 sInterruptSeed = 1;
2217 : // Used for the "counter" mode. This is the number of unskipped interrupt
2218 : // checks that have to happen before we interrupt. Controlled by the
2219 : // GECKO_REFLOW_INTERRUPT_FREQUENCY env var.
2220 : static PRUint32 sInterruptMaxCounter = 10;
2221 : // Used for the "counter" mode. This counts up to sInterruptMaxCounter and is
2222 : // then reset to 0.
2223 : static PRUint32 sInterruptCounter;
2224 : // Number of interrupt checks to skip before really trying to interrupt.
2225 : // Controlled by the GECKO_REFLOW_INTERRUPT_CHECKS_TO_SKIP env var.
2226 : static PRUint32 sInterruptChecksToSkip = 200;
2227 : // Number of milliseconds that a reflow should be allowed to run for before we
2228 : // actually allow interruption. Controlled by the
2229 : // GECKO_REFLOW_MIN_NOINTERRUPT_DURATION env var. Can't be initialized here,
2230 : // because TimeDuration/TimeStamp is not safe to use in static constructors..
2231 1396 : static TimeDuration sInterruptTimeout;
2232 :
2233 0 : static void GetInterruptEnv()
2234 : {
2235 0 : char *ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_MODE");
2236 0 : if (ev) {
2237 : #ifndef XP_WIN
2238 0 : if (PL_strcasecmp(ev, "random") == 0) {
2239 0 : ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_SEED");
2240 0 : if (ev) {
2241 0 : sInterruptSeed = atoi(ev);
2242 : }
2243 0 : srandom(sInterruptSeed);
2244 0 : sInterruptMode = ModeRandom;
2245 : } else
2246 : #endif
2247 0 : if (PL_strcasecmp(ev, "counter") == 0) {
2248 0 : ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_FREQUENCY");
2249 0 : if (ev) {
2250 0 : sInterruptMaxCounter = atoi(ev);
2251 : }
2252 0 : sInterruptCounter = 0;
2253 0 : sInterruptMode = ModeCounter;
2254 : }
2255 : }
2256 0 : ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_CHECKS_TO_SKIP");
2257 0 : if (ev) {
2258 0 : sInterruptChecksToSkip = atoi(ev);
2259 : }
2260 :
2261 0 : ev = PR_GetEnv("GECKO_REFLOW_MIN_NOINTERRUPT_DURATION");
2262 0 : int duration_ms = ev ? atoi(ev) : 100;
2263 0 : sInterruptTimeout = TimeDuration::FromMilliseconds(duration_ms);
2264 0 : }
2265 :
2266 : bool
2267 0 : nsPresContext::HavePendingInputEvent()
2268 : {
2269 0 : switch (sInterruptMode) {
2270 : #ifndef XP_WIN
2271 : case ModeRandom:
2272 0 : return (random() & 1);
2273 : #endif
2274 : case ModeCounter:
2275 0 : if (sInterruptCounter < sInterruptMaxCounter) {
2276 0 : ++sInterruptCounter;
2277 0 : return false;
2278 : }
2279 0 : sInterruptCounter = 0;
2280 0 : return true;
2281 : default:
2282 : case ModeEvent: {
2283 0 : nsIFrame* f = PresShell()->GetRootFrame();
2284 0 : if (f) {
2285 0 : nsIWidget* w = f->GetNearestWidget();
2286 0 : if (w) {
2287 0 : return w->HasPendingInputEvent();
2288 : }
2289 : }
2290 0 : return false;
2291 : }
2292 : }
2293 : }
2294 :
2295 : void
2296 0 : nsPresContext::ReflowStarted(bool aInterruptible)
2297 : {
2298 : #ifdef NOISY_INTERRUPTIBLE_REFLOW
2299 : if (!aInterruptible) {
2300 : printf("STARTING NONINTERRUPTIBLE REFLOW\n");
2301 : }
2302 : #endif
2303 : // We don't support interrupting in paginated contexts, since page
2304 : // sequences only handle initial reflow
2305 0 : mInterruptsEnabled = aInterruptible && !IsPaginated();
2306 :
2307 : // Don't set mHasPendingInterrupt based on HavePendingInputEvent() here. If
2308 : // we ever change that, then we need to update the code in
2309 : // PresShell::DoReflow to only add the just-reflown root to dirty roots if
2310 : // it's actually dirty. Otherwise we can end up adding a root that has no
2311 : // interruptible descendants, just because we detected an interrupt at reflow
2312 : // start.
2313 0 : mHasPendingInterrupt = false;
2314 :
2315 0 : mInterruptChecksToSkip = sInterruptChecksToSkip;
2316 :
2317 0 : if (mInterruptsEnabled) {
2318 0 : mReflowStartTime = TimeStamp::Now();
2319 : }
2320 0 : }
2321 :
2322 : bool
2323 0 : nsPresContext::CheckForInterrupt(nsIFrame* aFrame)
2324 : {
2325 0 : if (mHasPendingInterrupt) {
2326 0 : mShell->FrameNeedsToContinueReflow(aFrame);
2327 0 : return true;
2328 : }
2329 :
2330 0 : if (!sGotInterruptEnv) {
2331 0 : sGotInterruptEnv = true;
2332 0 : GetInterruptEnv();
2333 : }
2334 :
2335 0 : if (!mInterruptsEnabled) {
2336 0 : return false;
2337 : }
2338 :
2339 0 : if (mInterruptChecksToSkip > 0) {
2340 0 : --mInterruptChecksToSkip;
2341 0 : return false;
2342 : }
2343 0 : mInterruptChecksToSkip = sInterruptChecksToSkip;
2344 :
2345 : // Don't interrupt if it's been less than sInterruptTimeout since we started
2346 : // the reflow.
2347 : mHasPendingInterrupt =
2348 0 : TimeStamp::Now() - mReflowStartTime > sInterruptTimeout &&
2349 0 : HavePendingInputEvent() &&
2350 0 : !IsChrome();
2351 0 : if (mHasPendingInterrupt) {
2352 : #ifdef NOISY_INTERRUPTIBLE_REFLOW
2353 : printf("*** DETECTED pending interrupt (time=%lld)\n", PR_Now());
2354 : #endif /* NOISY_INTERRUPTIBLE_REFLOW */
2355 0 : mShell->FrameNeedsToContinueReflow(aFrame);
2356 : }
2357 0 : return mHasPendingInterrupt;
2358 : }
2359 :
2360 : size_t
2361 0 : nsPresContext::SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
2362 : {
2363 0 : return mPropertyTable.SizeOfExcludingThis(aMallocSizeOf);
2364 : mLangGroupFontPrefs.SizeOfExcludingThis(aMallocSizeOf);
2365 :
2366 : // Measurement of other members may be added later if DMD finds it is
2367 : // worthwhile.
2368 : }
2369 :
2370 : bool
2371 0 : nsPresContext::IsRootContentDocument()
2372 : {
2373 : // We are a root content document if: we are not a resource doc, we are
2374 : // not chrome, and we either have no parent or our parent is chrome.
2375 0 : if (mDocument->IsResourceDoc()) {
2376 0 : return false;
2377 : }
2378 0 : if (IsChrome()) {
2379 0 : return false;
2380 : }
2381 : // We may not have a root frame, so use views.
2382 0 : nsIView* view = PresShell()->GetViewManager()->GetRootView();
2383 0 : if (!view) {
2384 0 : return false;
2385 : }
2386 0 : view = view->GetParent(); // anonymous inner view
2387 0 : if (!view) {
2388 0 : return true;
2389 : }
2390 0 : view = view->GetParent(); // subdocumentframe's view
2391 0 : if (!view) {
2392 0 : return true;
2393 : }
2394 :
2395 0 : nsIFrame* f = view->GetFrame();
2396 0 : return (f && f->PresContext()->IsChrome());
2397 : }
2398 :
2399 0 : nsRootPresContext::nsRootPresContext(nsIDocument* aDocument,
2400 : nsPresContextType aType)
2401 : : nsPresContext(aDocument, aType),
2402 : mUpdatePluginGeometryForFrame(nsnull),
2403 : mDOMGeneration(0),
2404 0 : mNeedsToUpdatePluginGeometry(false)
2405 : {
2406 0 : mRegisteredPlugins.Init();
2407 0 : }
2408 :
2409 0 : nsRootPresContext::~nsRootPresContext()
2410 : {
2411 0 : NS_ASSERTION(mRegisteredPlugins.Count() == 0,
2412 : "All plugins should have been unregistered");
2413 0 : CancelDidPaintTimer();
2414 0 : CancelUpdatePluginGeometryTimer();
2415 0 : }
2416 :
2417 : void
2418 0 : nsRootPresContext::RegisterPluginForGeometryUpdates(nsObjectFrame* aPlugin)
2419 : {
2420 0 : mRegisteredPlugins.PutEntry(aPlugin);
2421 0 : }
2422 :
2423 : void
2424 0 : nsRootPresContext::UnregisterPluginForGeometryUpdates(nsObjectFrame* aPlugin)
2425 : {
2426 0 : mRegisteredPlugins.RemoveEntry(aPlugin);
2427 0 : }
2428 :
2429 0 : struct PluginGeometryClosure {
2430 : nsIFrame* mRootFrame;
2431 : PRInt32 mRootAPD;
2432 : nsIFrame* mChangedSubtree;
2433 : nsRect mChangedRect;
2434 : nsTHashtable<nsPtrHashKey<nsObjectFrame> > mAffectedPlugins;
2435 : nsRect mAffectedPluginBounds;
2436 : nsTArray<nsIWidget::Configuration>* mOutputConfigurations;
2437 : };
2438 : static PLDHashOperator
2439 0 : PluginBoundsEnumerator(nsPtrHashKey<nsObjectFrame>* aEntry, void* userArg)
2440 : {
2441 0 : PluginGeometryClosure* closure = static_cast<PluginGeometryClosure*>(userArg);
2442 0 : nsObjectFrame* f = aEntry->GetKey();
2443 0 : nsRect fBounds = f->GetContentRect() +
2444 0 : f->GetParent()->GetOffsetToCrossDoc(closure->mRootFrame);
2445 0 : PRInt32 APD = f->PresContext()->AppUnitsPerDevPixel();
2446 0 : fBounds = fBounds.ConvertAppUnitsRoundOut(APD, closure->mRootAPD);
2447 : // We're identifying the plugins that may have been affected by changes
2448 : // to the frame subtree rooted at aChangedRoot. Any plugin that overlaps
2449 : // the overflow area of aChangedRoot could have its clip region affected
2450 : // because it might be covered (or uncovered) by changes to the subtree.
2451 : // Plugins in the subtree might have changed position and/or size, and
2452 : // they might not be in aChangedRoot's overflow area (because they're
2453 : // being clipped by an ancestor in the subtree).
2454 0 : if (fBounds.Intersects(closure->mChangedRect) ||
2455 0 : nsLayoutUtils::IsAncestorFrameCrossDoc(closure->mChangedSubtree, f)) {
2456 : closure->mAffectedPluginBounds.UnionRect(
2457 0 : closure->mAffectedPluginBounds, fBounds);
2458 0 : closure->mAffectedPlugins.PutEntry(f);
2459 : }
2460 0 : return PL_DHASH_NEXT;
2461 : }
2462 :
2463 : static PLDHashOperator
2464 0 : PluginHideEnumerator(nsPtrHashKey<nsObjectFrame>* aEntry, void* userArg)
2465 : {
2466 0 : PluginGeometryClosure* closure = static_cast<PluginGeometryClosure*>(userArg);
2467 0 : nsObjectFrame* f = aEntry->GetKey();
2468 0 : f->GetEmptyClipConfiguration(closure->mOutputConfigurations);
2469 0 : return PL_DHASH_NEXT;
2470 : }
2471 :
2472 : static void
2473 0 : RecoverPluginGeometry(nsDisplayListBuilder* aBuilder,
2474 : nsDisplayList* aList, bool aInTransform, PluginGeometryClosure* aClosure)
2475 : {
2476 0 : for (nsDisplayItem* i = aList->GetBottom(); i; i = i->GetAbove()) {
2477 0 : switch (i->GetType()) {
2478 : case nsDisplayItem::TYPE_PLUGIN: {
2479 0 : nsDisplayPlugin* displayPlugin = static_cast<nsDisplayPlugin*>(i);
2480 : nsObjectFrame* f = static_cast<nsObjectFrame*>(
2481 0 : displayPlugin->GetUnderlyingFrame());
2482 : // Ignore plugins which aren't supposed to be affected by this
2483 : // operation --- their bounds will not have been included in the
2484 : // display list computations so the visible region computed for them
2485 : // would be incorrect
2486 : nsPtrHashKey<nsObjectFrame>* entry =
2487 0 : aClosure->mAffectedPlugins.GetEntry(f);
2488 : // Windowed plugins in transforms are always ignored, we don't
2489 : // create configurations for them
2490 0 : if (entry && (!aInTransform || f->PaintedByGecko())) {
2491 : displayPlugin->GetWidgetConfiguration(aBuilder,
2492 0 : aClosure->mOutputConfigurations);
2493 : // we've dealt with this plugin now
2494 0 : aClosure->mAffectedPlugins.RawRemoveEntry(entry);
2495 : }
2496 0 : break;
2497 : }
2498 : case nsDisplayItem::TYPE_TRANSFORM: {
2499 : nsDisplayList* sublist =
2500 0 : static_cast<nsDisplayTransform*>(i)->GetStoredList()->GetList();
2501 0 : RecoverPluginGeometry(aBuilder, sublist, true, aClosure);
2502 0 : break;
2503 : }
2504 : default: {
2505 0 : nsDisplayList* sublist = i->GetList();
2506 0 : if (sublist) {
2507 0 : RecoverPluginGeometry(aBuilder, sublist, aInTransform, aClosure);
2508 : }
2509 0 : break;
2510 : }
2511 : }
2512 : }
2513 0 : }
2514 :
2515 : #ifdef DEBUG
2516 : #include <stdio.h>
2517 :
2518 : static bool gDumpPluginList = false;
2519 : #endif
2520 :
2521 : void
2522 0 : nsRootPresContext::GetPluginGeometryUpdates(nsIFrame* aChangedSubtree,
2523 : nsTArray<nsIWidget::Configuration>* aConfigurations)
2524 : {
2525 0 : if (mRegisteredPlugins.Count() == 0)
2526 0 : return;
2527 :
2528 0 : PluginGeometryClosure closure;
2529 0 : closure.mRootFrame = mShell->FrameManager()->GetRootFrame();
2530 0 : closure.mRootAPD = closure.mRootFrame->PresContext()->AppUnitsPerDevPixel();
2531 0 : closure.mChangedSubtree = aChangedSubtree;
2532 0 : closure.mChangedRect = aChangedSubtree->GetVisualOverflowRect() +
2533 0 : aChangedSubtree->GetOffsetToCrossDoc(closure.mRootFrame);
2534 0 : PRInt32 subtreeAPD = aChangedSubtree->PresContext()->AppUnitsPerDevPixel();
2535 : closure.mChangedRect =
2536 0 : closure.mChangedRect.ConvertAppUnitsRoundOut(subtreeAPD, closure.mRootAPD);
2537 0 : closure.mAffectedPlugins.Init();
2538 0 : closure.mOutputConfigurations = aConfigurations;
2539 : // Fill in closure.mAffectedPlugins and closure.mAffectedPluginBounds
2540 0 : mRegisteredPlugins.EnumerateEntries(PluginBoundsEnumerator, &closure);
2541 :
2542 0 : nsRect bounds;
2543 0 : if (bounds.IntersectRect(closure.mAffectedPluginBounds,
2544 0 : closure.mRootFrame->GetRect())) {
2545 : nsDisplayListBuilder builder(closure.mRootFrame,
2546 0 : nsDisplayListBuilder::PLUGIN_GEOMETRY, false);
2547 0 : builder.SetAccurateVisibleRegions();
2548 0 : nsDisplayList list;
2549 :
2550 0 : builder.EnterPresShell(closure.mRootFrame, bounds);
2551 : closure.mRootFrame->BuildDisplayListForStackingContext(
2552 0 : &builder, bounds, &list);
2553 0 : builder.LeavePresShell(closure.mRootFrame, bounds);
2554 :
2555 : #ifdef DEBUG
2556 0 : if (gDumpPluginList) {
2557 : fprintf(stderr, "Plugins --- before optimization (bounds %d,%d,%d,%d):\n",
2558 0 : bounds.x, bounds.y, bounds.width, bounds.height);
2559 0 : nsFrame::PrintDisplayList(&builder, list);
2560 : }
2561 : #endif
2562 :
2563 0 : nsRegion visibleRegion(bounds);
2564 0 : list.ComputeVisibilityForRoot(&builder, &visibleRegion);
2565 :
2566 : #ifdef DEBUG
2567 0 : if (gDumpPluginList) {
2568 0 : fprintf(stderr, "Plugins --- after optimization:\n");
2569 0 : nsFrame::PrintDisplayList(&builder, list);
2570 : }
2571 : #endif
2572 :
2573 0 : RecoverPluginGeometry(&builder, &list, false, &closure);
2574 0 : list.DeleteAll();
2575 : }
2576 :
2577 : // Plugins that we didn't find in the display list are not visible
2578 0 : closure.mAffectedPlugins.EnumerateEntries(PluginHideEnumerator, &closure);
2579 : }
2580 :
2581 : static bool
2582 0 : HasOverlap(const nsIntPoint& aOffset1, const nsTArray<nsIntRect>& aClipRects1,
2583 : const nsIntPoint& aOffset2, const nsTArray<nsIntRect>& aClipRects2)
2584 : {
2585 0 : nsIntPoint offsetDelta = aOffset1 - aOffset2;
2586 0 : for (PRUint32 i = 0; i < aClipRects1.Length(); ++i) {
2587 0 : for (PRUint32 j = 0; j < aClipRects2.Length(); ++j) {
2588 0 : if ((aClipRects1[i] + offsetDelta).Intersects(aClipRects2[j]))
2589 0 : return true;
2590 : }
2591 : }
2592 0 : return false;
2593 : }
2594 :
2595 : /**
2596 : * Given a list of plugin windows to move to new locations, sort the list
2597 : * so that for each window move, the window moves to a location that
2598 : * does not intersect other windows. This minimizes flicker and repainting.
2599 : * It's not always possible to do this perfectly, since in general
2600 : * we might have cycles. But we do our best.
2601 : * We need to take into account that windows are clipped to particular
2602 : * regions and the clip regions change as the windows are moved.
2603 : */
2604 : static void
2605 0 : SortConfigurations(nsTArray<nsIWidget::Configuration>* aConfigurations)
2606 : {
2607 0 : if (aConfigurations->Length() > 10) {
2608 : // Give up, we don't want to get bogged down here
2609 0 : return;
2610 : }
2611 :
2612 0 : nsTArray<nsIWidget::Configuration> pluginsToMove;
2613 0 : pluginsToMove.SwapElements(*aConfigurations);
2614 :
2615 : // Our algorithm is quite naive. At each step we try to identify
2616 : // a window that can be moved to its new location that won't overlap
2617 : // any other windows at the new location. If there is no such
2618 : // window, we just move the last window in the list anyway.
2619 0 : while (!pluginsToMove.IsEmpty()) {
2620 : // Find a window whose destination does not overlap any other window
2621 : PRUint32 i;
2622 0 : for (i = 0; i + 1 < pluginsToMove.Length(); ++i) {
2623 0 : nsIWidget::Configuration* config = &pluginsToMove[i];
2624 0 : bool foundOverlap = false;
2625 0 : for (PRUint32 j = 0; j < pluginsToMove.Length(); ++j) {
2626 0 : if (i == j)
2627 0 : continue;
2628 0 : nsIntRect bounds;
2629 0 : pluginsToMove[j].mChild->GetBounds(bounds);
2630 0 : nsAutoTArray<nsIntRect,1> clipRects;
2631 0 : pluginsToMove[j].mChild->GetWindowClipRegion(&clipRects);
2632 0 : if (HasOverlap(bounds.TopLeft(), clipRects,
2633 : config->mBounds.TopLeft(),
2634 0 : config->mClipRegion)) {
2635 0 : foundOverlap = true;
2636 : break;
2637 : }
2638 : }
2639 0 : if (!foundOverlap)
2640 0 : break;
2641 : }
2642 : // Note that we always move the last plugin in pluginsToMove, if we
2643 : // can't find any other plugin to move
2644 0 : aConfigurations->AppendElement(pluginsToMove[i]);
2645 0 : pluginsToMove.RemoveElementAt(i);
2646 : }
2647 : }
2648 :
2649 : void
2650 0 : nsRootPresContext::UpdatePluginGeometry()
2651 : {
2652 0 : if (!mNeedsToUpdatePluginGeometry)
2653 0 : return;
2654 0 : mNeedsToUpdatePluginGeometry = false;
2655 : // Cancel out mUpdatePluginGeometryTimer so it doesn't do a random
2656 : // update when we don't actually want one.
2657 0 : CancelUpdatePluginGeometryTimer();
2658 :
2659 0 : nsIFrame* f = mUpdatePluginGeometryForFrame;
2660 0 : if (f) {
2661 : mUpdatePluginGeometryForFrame->PresContext()->
2662 0 : SetContainsUpdatePluginGeometryFrame(false);
2663 0 : mUpdatePluginGeometryForFrame = nsnull;
2664 : } else {
2665 0 : f = FrameManager()->GetRootFrame();
2666 : }
2667 :
2668 0 : nsTArray<nsIWidget::Configuration> configurations;
2669 0 : GetPluginGeometryUpdates(f, &configurations);
2670 0 : if (configurations.IsEmpty())
2671 : return;
2672 0 : SortConfigurations(&configurations);
2673 0 : nsIWidget* widget = FrameManager()->GetRootFrame()->GetNearestWidget();
2674 0 : NS_ASSERTION(widget, "Plugins must have a parent window");
2675 0 : widget->ConfigureChildren(configurations);
2676 0 : DidApplyPluginGeometryUpdates();
2677 : }
2678 :
2679 : static void
2680 0 : UpdatePluginGeometryCallback(nsITimer *aTimer, void *aClosure)
2681 : {
2682 0 : static_cast<nsRootPresContext*>(aClosure)->UpdatePluginGeometry();
2683 0 : }
2684 :
2685 : void
2686 0 : nsRootPresContext::RequestUpdatePluginGeometry(nsIFrame* aFrame)
2687 : {
2688 0 : if (mRegisteredPlugins.Count() == 0)
2689 0 : return;
2690 :
2691 0 : if (!mNeedsToUpdatePluginGeometry) {
2692 : // We'll update the plugin geometry during the next paint in this
2693 : // presContext (either from nsPresShell::WillPaint or from
2694 : // nsPresShell::DidPaint, depending on the platform) or on the next
2695 : // layout flush, whichever comes first. But we may not have anyone
2696 : // flush layout, and paints might get optimized away if the old
2697 : // plugin geometry covers the whole canvas, so set a backup timer to
2698 : // do this too. We want to make sure this won't fire before our
2699 : // normal paint notifications, if those would update the geometry,
2700 : // so set it for double the refresh driver interval.
2701 0 : mUpdatePluginGeometryTimer = do_CreateInstance("@mozilla.org/timer;1");
2702 0 : if (mUpdatePluginGeometryTimer) {
2703 0 : mUpdatePluginGeometryTimer->
2704 : InitWithFuncCallback(UpdatePluginGeometryCallback, this,
2705 0 : nsRefreshDriver::DefaultInterval() * 2,
2706 0 : nsITimer::TYPE_ONE_SHOT);
2707 : }
2708 0 : mNeedsToUpdatePluginGeometry = true;
2709 0 : mUpdatePluginGeometryForFrame = aFrame;
2710 : mUpdatePluginGeometryForFrame->PresContext()->
2711 0 : SetContainsUpdatePluginGeometryFrame(true);
2712 : } else {
2713 0 : if (!mUpdatePluginGeometryForFrame ||
2714 : aFrame == mUpdatePluginGeometryForFrame)
2715 0 : return;
2716 : mUpdatePluginGeometryForFrame->PresContext()->
2717 0 : SetContainsUpdatePluginGeometryFrame(false);
2718 0 : mUpdatePluginGeometryForFrame = nsnull;
2719 : }
2720 : }
2721 :
2722 : static PLDHashOperator
2723 0 : PluginDidSetGeometryEnumerator(nsPtrHashKey<nsObjectFrame>* aEntry, void* userArg)
2724 : {
2725 0 : nsObjectFrame* f = aEntry->GetKey();
2726 0 : f->DidSetWidgetGeometry();
2727 0 : return PL_DHASH_NEXT;
2728 : }
2729 :
2730 : void
2731 0 : nsRootPresContext::DidApplyPluginGeometryUpdates()
2732 : {
2733 0 : mRegisteredPlugins.EnumerateEntries(PluginDidSetGeometryEnumerator, nsnull);
2734 0 : }
2735 :
2736 : void
2737 0 : nsRootPresContext::RootForgetUpdatePluginGeometryFrame(nsIFrame* aFrame)
2738 : {
2739 0 : if (aFrame == mUpdatePluginGeometryForFrame) {
2740 : mUpdatePluginGeometryForFrame->PresContext()->
2741 0 : SetContainsUpdatePluginGeometryFrame(false);
2742 0 : mUpdatePluginGeometryForFrame = nsnull;
2743 : }
2744 0 : }
2745 :
2746 : void
2747 0 : nsRootPresContext::RootForgetUpdatePluginGeometryFrameForPresContext(
2748 : nsPresContext* aPresContext)
2749 : {
2750 0 : if (aPresContext->GetContainsUpdatePluginGeometryFrame()) {
2751 0 : aPresContext->SetContainsUpdatePluginGeometryFrame(false);
2752 0 : mUpdatePluginGeometryForFrame = nsnull;
2753 : }
2754 0 : }
2755 :
2756 : static void
2757 0 : NotifyDidPaintForSubtreeCallback(nsITimer *aTimer, void *aClosure)
2758 : {
2759 0 : nsPresContext* presContext = (nsPresContext*)aClosure;
2760 0 : nsAutoScriptBlocker blockScripts;
2761 0 : presContext->NotifyDidPaintForSubtree();
2762 0 : }
2763 :
2764 : void
2765 0 : nsRootPresContext::EnsureEventualDidPaintEvent()
2766 : {
2767 0 : if (mNotifyDidPaintTimer)
2768 0 : return;
2769 0 : mNotifyDidPaintTimer = do_CreateInstance("@mozilla.org/timer;1");
2770 0 : if (!mNotifyDidPaintTimer)
2771 0 : return;
2772 0 : mNotifyDidPaintTimer->InitWithFuncCallback(NotifyDidPaintForSubtreeCallback,
2773 0 : (void*)this, 100, nsITimer::TYPE_ONE_SHOT);
2774 : }
2775 :
2776 : void
2777 0 : nsRootPresContext::AddWillPaintObserver(nsIRunnable* aRunnable)
2778 : {
2779 0 : if (!mWillPaintFallbackEvent.IsPending()) {
2780 0 : mWillPaintFallbackEvent = new RunWillPaintObservers(this);
2781 0 : NS_DispatchToMainThread(mWillPaintFallbackEvent.get());
2782 : }
2783 0 : mWillPaintObservers.AppendElement(aRunnable);
2784 0 : }
2785 :
2786 : /**
2787 : * Run all runnables that need to get called before the next paint.
2788 : */
2789 : void
2790 0 : nsRootPresContext::FlushWillPaintObservers()
2791 : {
2792 0 : mWillPaintFallbackEvent = nsnull;
2793 0 : nsTArray<nsCOMPtr<nsIRunnable> > observers;
2794 0 : observers.SwapElements(mWillPaintObservers);
2795 0 : for (PRUint32 i = 0; i < observers.Length(); ++i) {
2796 0 : observers[i]->Run();
2797 : }
2798 0 : }
2799 :
2800 : size_t
2801 0 : nsRootPresContext::SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
2802 : {
2803 0 : return nsPresContext::SizeOfExcludingThis(aMallocSizeOf);
2804 :
2805 : // Measurement of the following members may be added later if DMD finds it is
2806 : // worthwhile:
2807 : // - mNotifyDidPaintTimer
2808 : // - mRegisteredPlugins
2809 : // - mWillPaintObservers
2810 : // - mWillPaintFallbackEvent
2811 : //
2812 : // The following member are not measured:
2813 : // - mUpdatePluginGeometryForFrame, because it is non-owning
2814 4188 : }
2815 :
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