e7ad4f7000
start loading the background images when we resolve style on an object that needs them instead of when we scroll down and see it for the first time. Bug 57607, r=pavlov, sr=dbaron git-svn-id: svn://10.0.0.236/trunk@153725 18797224-902f-48f8-a5cc-f745e15eee43
875 lines
32 KiB
C++
875 lines
32 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is nsCSSDataBlock.cpp.
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*
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* The Initial Developer of the Original Code is L. David Baron.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* L. David Baron <dbaron@dbaron.org> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCSSDataBlock.h"
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#include "nsCSSProps.h"
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#include "nsRuleNode.h"
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/*
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* nsCSSCompressedDataBlock holds property-value pairs corresponding to
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* CSS declaration blocks. The value is stored in one of the six CSS
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* data types. These six types are nsCSSValue, nsCSSRect,
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* nsCSSValueList, nsCSSCounterData, nsCSSQuotes, and nsCSSShadow, and
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* each correspond to a value of the nsCSSType enumeration.
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*
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* The storage strategy uses the CDB*Storage structs below to help
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* ensure that all the types remain properly aligned. nsCSSValue's
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* alignment requirements cannot be weaker than any others, since it
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* contains a pointer and an enumeration.
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*
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* The simple types, nsCSSValue and nsCSSRect have the nsCSSValue or
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* nsCSSRect objects stored in the block. The list types have only a
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* pointer to the first element in the list stored in the block.
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*/
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struct CDBValueStorage {
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nsCSSProperty property;
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nsCSSValue value;
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};
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struct CDBRectStorage {
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nsCSSProperty property;
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nsCSSRect value;
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};
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struct CDBPointerStorage {
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nsCSSProperty property;
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void *value;
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};
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enum {
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CDBValueStorage_advance = sizeof(CDBValueStorage),
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CDBRectStorage_advance = sizeof(CDBRectStorage),
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// round up using the closest estimate we can get of the alignment
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// requirements of nsCSSValue:
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CDBPointerStorage_advance = PR_ROUNDUP(sizeof(CDBPointerStorage),
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sizeof(CDBValueStorage) - sizeof(nsCSSValue))
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};
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/*
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* Define a bunch of utility functions for getting the property or any
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* of the value types when the cursor is at the beginning of the storage
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* for the property-value pair. The versions taking a non-const cursor
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* argument return a reference so that the caller can assign into the
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* result.
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*/
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inline nsCSSProperty& PropertyAtCursor(char *aCursor) {
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return *NS_REINTERPRET_CAST(nsCSSProperty*, aCursor);
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}
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inline nsCSSProperty PropertyAtCursor(const char *aCursor) {
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return *NS_REINTERPRET_CAST(const nsCSSProperty*, aCursor);
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}
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inline nsCSSValue* ValueAtCursor(char *aCursor) {
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return & NS_REINTERPRET_CAST(CDBValueStorage*, aCursor)->value;
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}
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inline const nsCSSValue* ValueAtCursor(const char *aCursor) {
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return & NS_REINTERPRET_CAST(const CDBValueStorage*, aCursor)->value;
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}
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inline nsCSSRect* RectAtCursor(char *aCursor) {
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return & NS_REINTERPRET_CAST(CDBRectStorage*, aCursor)->value;
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}
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inline const nsCSSRect* RectAtCursor(const char *aCursor) {
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return & NS_REINTERPRET_CAST(const CDBRectStorage*, aCursor)->value;
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}
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inline void*& PointerAtCursor(char *aCursor) {
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return NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value;
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}
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inline void* PointerAtCursor(const char *aCursor) {
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return NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value;
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}
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inline nsCSSValueList*& ValueListAtCursor(char *aCursor) {
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return * NS_REINTERPRET_CAST(nsCSSValueList**,
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& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSValueList* ValueListAtCursor(const char *aCursor) {
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return NS_STATIC_CAST(nsCSSValueList*,
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NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSCounterData*& CounterDataAtCursor(char *aCursor) {
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return * NS_REINTERPRET_CAST(nsCSSCounterData**,
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& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSCounterData* CounterDataAtCursor(const char *aCursor) {
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return NS_STATIC_CAST(nsCSSCounterData*,
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NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSQuotes*& QuotesAtCursor(char *aCursor) {
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return * NS_REINTERPRET_CAST(nsCSSQuotes**,
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& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSQuotes* QuotesAtCursor(const char *aCursor) {
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return NS_STATIC_CAST(nsCSSQuotes*,
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NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSShadow*& ShadowAtCursor(char *aCursor) {
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return * NS_REINTERPRET_CAST(nsCSSShadow**,
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& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
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}
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inline nsCSSShadow* ShadowAtCursor(const char *aCursor) {
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return NS_STATIC_CAST(nsCSSShadow*,
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NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
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}
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nsresult
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nsCSSCompressedDataBlock::MapRuleInfoInto(nsRuleData *aRuleData) const
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{
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// If we have no data for this struct, then return immediately.
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// This optimization should make us return most of the time, so we
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// have to worry much less (although still some) about the speed of
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// the rest of the function.
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if (!(nsCachedStyleData::GetBitForSID(aRuleData->mSID) & mStyleBits))
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return NS_OK;
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const char* cursor = Block();
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const char* cursor_end = BlockEnd();
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while (cursor < cursor_end) {
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nsCSSProperty iProp = PropertyAtCursor(cursor);
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NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
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"out of range");
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if (nsCSSProps::kSIDTable[iProp] == aRuleData->mSID) {
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void *prop =
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nsCSSExpandedDataBlock::RuleDataPropertyAt(aRuleData, iProp);
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switch (nsCSSProps::kTypeTable[iProp]) {
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case eCSSType_Value: {
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nsCSSValue* target = NS_STATIC_CAST(nsCSSValue*, prop);
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if (target->GetUnit() == eCSSUnit_Null) {
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const nsCSSValue *val = ValueAtCursor(cursor);
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NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
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if (iProp == eCSSProperty_background_image &&
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val->GetUnit() == eCSSUnit_URL) {
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val->StartImageLoad(aRuleData->mPresContext->GetDocument());
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}
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*target = *val;
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if (iProp == eCSSProperty_font_family) {
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// XXX Are there other things like this?
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aRuleData->mFontData->mFamilyFromHTML = PR_FALSE;
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}
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}
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cursor += CDBValueStorage_advance;
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} break;
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case eCSSType_Rect: {
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const nsCSSRect* val = RectAtCursor(cursor);
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NS_ASSERTION(val->mTop.GetUnit() != eCSSUnit_Null ||
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val->mRight.GetUnit() != eCSSUnit_Null ||
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val->mBottom.GetUnit() != eCSSUnit_Null ||
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val->mLeft.GetUnit() != eCSSUnit_Null, "oops");
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nsCSSRect* target = NS_STATIC_CAST(nsCSSRect*, prop);
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if (target->mTop.GetUnit() == eCSSUnit_Null)
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target->mTop = val->mTop;
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if (target->mRight.GetUnit() == eCSSUnit_Null)
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target->mRight = val->mRight;
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if (target->mBottom.GetUnit() == eCSSUnit_Null)
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target->mBottom = val->mBottom;
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if (target->mLeft.GetUnit() == eCSSUnit_Null)
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target->mLeft = val->mLeft;
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cursor += CDBRectStorage_advance;
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} break;
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case eCSSType_ValueList:
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case eCSSType_CounterData:
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case eCSSType_Quotes:
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case eCSSType_Shadow: {
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void** target = NS_STATIC_CAST(void**, prop);
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if (!*target) {
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void* val = PointerAtCursor(cursor);
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NS_ASSERTION(val, "oops");
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*target = val;
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}
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cursor += CDBPointerStorage_advance;
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} break;
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}
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} else {
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switch (nsCSSProps::kTypeTable[iProp]) {
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case eCSSType_Value: {
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cursor += CDBValueStorage_advance;
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} break;
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case eCSSType_Rect: {
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cursor += CDBRectStorage_advance;
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} break;
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case eCSSType_ValueList:
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case eCSSType_CounterData:
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case eCSSType_Quotes:
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case eCSSType_Shadow: {
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cursor += CDBPointerStorage_advance;
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} break;
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}
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}
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}
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NS_ASSERTION(cursor == cursor_end, "inconsistent data");
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return NS_OK;
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}
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const void*
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nsCSSCompressedDataBlock::StorageFor(nsCSSProperty aProperty) const
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{
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// If we have no data for this struct, then return immediately.
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// This optimization should make us return most of the time, so we
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// have to worry much less (although still some) about the speed of
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// the rest of the function.
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if (!(nsCachedStyleData::GetBitForSID(nsCSSProps::kSIDTable[aProperty]) &
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mStyleBits))
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return nsnull;
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const char* cursor = Block();
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const char* cursor_end = BlockEnd();
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while (cursor < cursor_end) {
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nsCSSProperty iProp = PropertyAtCursor(cursor);
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NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
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"out of range");
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if (iProp == aProperty) {
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switch (nsCSSProps::kTypeTable[iProp]) {
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case eCSSType_Value: {
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return ValueAtCursor(cursor);
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}
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case eCSSType_Rect: {
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return RectAtCursor(cursor);
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}
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case eCSSType_ValueList:
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case eCSSType_CounterData:
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case eCSSType_Quotes:
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case eCSSType_Shadow: {
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return &PointerAtCursor(NS_CONST_CAST(char*, cursor));
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}
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}
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}
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switch (nsCSSProps::kTypeTable[iProp]) {
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case eCSSType_Value: {
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cursor += CDBValueStorage_advance;
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} break;
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case eCSSType_Rect: {
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cursor += CDBRectStorage_advance;
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} break;
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case eCSSType_ValueList:
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case eCSSType_CounterData:
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case eCSSType_Quotes:
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case eCSSType_Shadow: {
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cursor += CDBPointerStorage_advance;
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} break;
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}
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}
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NS_ASSERTION(cursor == cursor_end, "inconsistent data");
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return nsnull;
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}
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nsCSSCompressedDataBlock*
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nsCSSCompressedDataBlock::Clone() const
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{
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const char *cursor = Block(), *cursor_end = BlockEnd();
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char *result_cursor;
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nsCSSCompressedDataBlock *result =
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new(cursor_end - cursor) nsCSSCompressedDataBlock();
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if (!result)
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return nsnull;
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result_cursor = result->Block();
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while (cursor < cursor_end) {
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nsCSSProperty iProp = PropertyAtCursor(cursor);
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NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
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"out of range");
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PropertyAtCursor(result_cursor) = iProp;
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switch (nsCSSProps::kTypeTable[iProp]) {
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case eCSSType_Value: {
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const nsCSSValue* val = ValueAtCursor(cursor);
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NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
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nsCSSValue *result_val = ValueAtCursor(result_cursor);
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new (result_val) nsCSSValue(*val);
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cursor += CDBValueStorage_advance;
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result_cursor += CDBValueStorage_advance;
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} break;
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case eCSSType_Rect: {
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const nsCSSRect* val = RectAtCursor(cursor);
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NS_ASSERTION(val->mTop.GetUnit() != eCSSUnit_Null ||
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val->mRight.GetUnit() != eCSSUnit_Null ||
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val->mBottom.GetUnit() != eCSSUnit_Null ||
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val->mLeft.GetUnit() != eCSSUnit_Null, "oops");
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nsCSSRect* result_val = RectAtCursor(result_cursor);
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new (result_val) nsCSSRect(*val);
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cursor += CDBRectStorage_advance;
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result_cursor += CDBRectStorage_advance;
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} break;
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case eCSSType_ValueList:
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case eCSSType_CounterData:
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case eCSSType_Quotes:
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case eCSSType_Shadow: {
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void *copy;
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NS_ASSERTION(PointerAtCursor(cursor), "oops");
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switch (nsCSSProps::kTypeTable[iProp]) {
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default:
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NS_NOTREACHED("unreachable");
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// fall through to keep gcc's uninitialized
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// variable warning quiet
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case eCSSType_ValueList:
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copy = new nsCSSValueList(*ValueListAtCursor(cursor));
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break;
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case eCSSType_CounterData:
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copy =
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new nsCSSCounterData(*CounterDataAtCursor(cursor));
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break;
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case eCSSType_Quotes:
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copy = new nsCSSQuotes(*QuotesAtCursor(cursor));
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break;
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case eCSSType_Shadow:
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copy = new nsCSSShadow(*ShadowAtCursor(cursor));
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break;
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}
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if (!copy) {
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result->mBlockEnd = result_cursor;
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result->Destroy();
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return nsnull;
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}
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PointerAtCursor(result_cursor) = copy;
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cursor += CDBPointerStorage_advance;
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result_cursor += CDBPointerStorage_advance;
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} break;
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}
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}
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NS_ASSERTION(cursor == cursor_end, "inconsistent data");
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result->mBlockEnd = result_cursor;
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result->mStyleBits = mStyleBits;
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NS_ASSERTION(result->DataSize() == DataSize(), "wrong size");
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return result;
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}
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void
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nsCSSCompressedDataBlock::Destroy()
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{
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const char* cursor = Block();
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const char* cursor_end = BlockEnd();
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while (cursor < cursor_end) {
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nsCSSProperty iProp = PropertyAtCursor(cursor);
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NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
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"out of range");
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switch (nsCSSProps::kTypeTable[iProp]) {
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case eCSSType_Value: {
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const nsCSSValue* val = ValueAtCursor(cursor);
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NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
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val->~nsCSSValue();
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cursor += CDBValueStorage_advance;
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} break;
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case eCSSType_Rect: {
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const nsCSSRect* val = RectAtCursor(cursor);
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NS_ASSERTION(val->mTop.GetUnit() != eCSSUnit_Null ||
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val->mRight.GetUnit() != eCSSUnit_Null ||
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val->mBottom.GetUnit() != eCSSUnit_Null ||
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val->mLeft.GetUnit() != eCSSUnit_Null, "oops");
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val->~nsCSSRect();
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cursor += CDBRectStorage_advance;
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} break;
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case eCSSType_ValueList: {
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nsCSSValueList* val = ValueListAtCursor(cursor);
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NS_ASSERTION(val, "oops");
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delete val;
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cursor += CDBPointerStorage_advance;
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} break;
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case eCSSType_CounterData: {
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nsCSSCounterData* val = CounterDataAtCursor(cursor);
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NS_ASSERTION(val, "oops");
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delete val;
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cursor += CDBPointerStorage_advance;
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} break;
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case eCSSType_Quotes: {
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nsCSSQuotes* val = QuotesAtCursor(cursor);
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NS_ASSERTION(val, "oops");
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delete val;
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cursor += CDBPointerStorage_advance;
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} break;
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case eCSSType_Shadow: {
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nsCSSShadow* val = ShadowAtCursor(cursor);
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NS_ASSERTION(val, "oops");
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delete val;
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cursor += CDBPointerStorage_advance;
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} break;
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}
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}
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NS_ASSERTION(cursor == cursor_end, "inconsistent data");
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delete this;
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}
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/* static */ nsCSSCompressedDataBlock*
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nsCSSCompressedDataBlock::CreateEmptyBlock()
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{
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nsCSSCompressedDataBlock *result = new(0) nsCSSCompressedDataBlock();
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if (!result)
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return nsnull;
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result->mBlockEnd = result->Block();
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return result;
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}
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/*****************************************************************************/
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nsCSSExpandedDataBlock::nsCSSExpandedDataBlock()
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{
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ClearSets();
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AssertInitialState();
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}
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nsCSSExpandedDataBlock::~nsCSSExpandedDataBlock()
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{
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AssertInitialState();
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}
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const nsCSSExpandedDataBlock::PropertyOffsetInfo
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nsCSSExpandedDataBlock::kOffsetTable[eCSSProperty_COUNT_no_shorthands] = {
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#define CSS_PROP_BACKENDONLY(name_, id_, method_, datastruct_, member_, type_, iscoord_, kwtable_) \
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{ offsetof(nsCSSExpandedDataBlock, m##datastruct_.member_), \
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size_t(-1), \
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size_t(-1) },
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#define CSS_PROP(name_, id_, method_, datastruct_, member_, type_, iscoord_, kwtable_) \
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{ offsetof(nsCSSExpandedDataBlock, m##datastruct_.member_), \
|
|
offsetof(nsRuleData, m##datastruct_##Data), \
|
|
offsetof(nsRuleData##datastruct_, member_) },
|
|
#include "nsCSSPropList.h"
|
|
#undef CSS_PROP
|
|
#undef CSS_PROP_BACKENDONLY
|
|
};
|
|
|
|
void
|
|
nsCSSExpandedDataBlock::DoExpand(nsCSSCompressedDataBlock *aBlock,
|
|
PRBool aImportant)
|
|
{
|
|
NS_PRECONDITION(aBlock, "unexpected null block");
|
|
|
|
/*
|
|
* Save needless copying and allocation by copying the memory
|
|
* corresponding to the stored data in the compressed block, and
|
|
* then, to avoid destructors, deleting the compressed block by
|
|
* calling |delete| instead of using its |Destroy| method.
|
|
*/
|
|
const char* cursor = aBlock->Block();
|
|
const char* cursor_end = aBlock->BlockEnd();
|
|
while (cursor < cursor_end) {
|
|
nsCSSProperty iProp = PropertyAtCursor(cursor);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
NS_ASSERTION(!HasPropertyBit(iProp),
|
|
"compressed block has property multiple times");
|
|
SetPropertyBit(iProp);
|
|
if (aImportant)
|
|
SetImportantBit(iProp);
|
|
void *prop = PropertyAt(iProp);
|
|
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
const nsCSSValue* val = ValueAtCursor(cursor);
|
|
NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
|
|
memcpy(prop, val, sizeof(nsCSSValue));
|
|
cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
const nsCSSRect* val = RectAtCursor(cursor);
|
|
NS_ASSERTION(val->mTop.GetUnit() != eCSSUnit_Null ||
|
|
val->mRight.GetUnit() != eCSSUnit_Null ||
|
|
val->mBottom.GetUnit() != eCSSUnit_Null ||
|
|
val->mLeft.GetUnit() != eCSSUnit_Null, "oops");
|
|
memcpy(prop, val, sizeof(nsCSSRect));
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes:
|
|
case eCSSType_Shadow: {
|
|
void* val = PointerAtCursor(cursor);
|
|
NS_ASSERTION(val, "oops");
|
|
*NS_STATIC_CAST(void**, prop) = val;
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
}
|
|
NS_ASSERTION(cursor == cursor_end, "inconsistent data");
|
|
|
|
delete aBlock;
|
|
}
|
|
|
|
void
|
|
nsCSSExpandedDataBlock::Expand(nsCSSCompressedDataBlock **aNormalBlock,
|
|
nsCSSCompressedDataBlock **aImportantBlock)
|
|
{
|
|
NS_PRECONDITION(*aNormalBlock, "unexpected null block");
|
|
AssertInitialState();
|
|
|
|
DoExpand(*aNormalBlock, PR_FALSE);
|
|
*aNormalBlock = nsnull;
|
|
if (*aImportantBlock) {
|
|
DoExpand(*aImportantBlock, PR_TRUE);
|
|
*aImportantBlock = nsnull;
|
|
}
|
|
}
|
|
|
|
nsCSSExpandedDataBlock::ComputeSizeResult
|
|
nsCSSExpandedDataBlock::ComputeSize()
|
|
{
|
|
ComputeSizeResult result = {0, 0};
|
|
for (PRUint32 iHigh = 0; iHigh < NS_ARRAY_LENGTH(mPropertiesSet); ++iHigh) {
|
|
if (mPropertiesSet[iHigh] == 0)
|
|
continue;
|
|
for (PRInt32 iLow = 0; iLow < kPropertiesSetChunkSize; ++iLow) {
|
|
if ((mPropertiesSet[iHigh] & (1 << iLow)) == 0)
|
|
continue;
|
|
nsCSSProperty iProp =
|
|
nsCSSProperty(iHigh * kPropertiesSetChunkSize + iLow);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
void *prop = PropertyAt(iProp);
|
|
PRUint32 increment = 0;
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
nsCSSValue* val = NS_STATIC_CAST(nsCSSValue*, prop);
|
|
if (val->GetUnit() != eCSSUnit_Null) {
|
|
increment = CDBValueStorage_advance;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
nsCSSRect* val = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
if (val->mTop.GetUnit() != eCSSUnit_Null ||
|
|
val->mRight.GetUnit() != eCSSUnit_Null ||
|
|
val->mBottom.GetUnit() != eCSSUnit_Null ||
|
|
val->mLeft.GetUnit() != eCSSUnit_Null) {
|
|
increment = CDBRectStorage_advance;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes:
|
|
case eCSSType_Shadow: {
|
|
void* val = *NS_STATIC_CAST(void**, prop);
|
|
if (val) {
|
|
increment = CDBPointerStorage_advance;
|
|
}
|
|
} break;
|
|
}
|
|
if ((mPropertiesImportant[iHigh] & (1 << iLow)) == 0)
|
|
result.normal += increment;
|
|
else
|
|
result.important += increment;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsCSSExpandedDataBlock::Compress(nsCSSCompressedDataBlock **aNormalBlock,
|
|
nsCSSCompressedDataBlock **aImportantBlock)
|
|
{
|
|
nsCSSCompressedDataBlock *result_normal, *result_important;
|
|
char *cursor_normal, *cursor_important;
|
|
|
|
ComputeSizeResult size = ComputeSize();
|
|
|
|
result_normal = new(size.normal) nsCSSCompressedDataBlock();
|
|
if (!result_normal) {
|
|
*aNormalBlock = nsnull;
|
|
*aImportantBlock = nsnull;
|
|
return;
|
|
}
|
|
cursor_normal = result_normal->Block();
|
|
|
|
if (size.important != 0) {
|
|
result_important = new(size.important) nsCSSCompressedDataBlock();
|
|
if (!result_important) {
|
|
delete result_normal;
|
|
*aNormalBlock = nsnull;
|
|
*aImportantBlock = nsnull;
|
|
return;
|
|
}
|
|
cursor_important = result_important->Block();
|
|
} else {
|
|
result_important = nsnull;
|
|
}
|
|
|
|
/*
|
|
* Save needless copying and allocation by copying the memory
|
|
* corresponding to the stored data in the expanded block, and then
|
|
* clearing the data in the expanded block.
|
|
*/
|
|
for (PRUint32 iHigh = 0; iHigh < NS_ARRAY_LENGTH(mPropertiesSet); ++iHigh) {
|
|
if (mPropertiesSet[iHigh] == 0)
|
|
continue;
|
|
for (PRInt32 iLow = 0; iLow < kPropertiesSetChunkSize; ++iLow) {
|
|
if ((mPropertiesSet[iHigh] & (1 << iLow)) == 0)
|
|
continue;
|
|
nsCSSProperty iProp =
|
|
nsCSSProperty(iHigh * kPropertiesSetChunkSize + iLow);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
void *prop = PropertyAt(iProp);
|
|
PRBool present = PR_FALSE;
|
|
PRBool important =
|
|
(mPropertiesImportant[iHigh] & (1 << iLow)) != 0;
|
|
char *&cursor = important ? cursor_important : cursor_normal;
|
|
nsCSSCompressedDataBlock *result =
|
|
important ? result_important : result_normal;
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
nsCSSValue* val = NS_STATIC_CAST(nsCSSValue*, prop);
|
|
if (val->GetUnit() != eCSSUnit_Null) {
|
|
CDBValueStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBValueStorage*, cursor);
|
|
storage->property = iProp;
|
|
memcpy(&storage->value, val, sizeof(nsCSSValue));
|
|
new (val) nsCSSValue();
|
|
cursor += CDBValueStorage_advance;
|
|
present = PR_TRUE;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
nsCSSRect* val = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
if (val->mTop.GetUnit() != eCSSUnit_Null ||
|
|
val->mRight.GetUnit() != eCSSUnit_Null ||
|
|
val->mBottom.GetUnit() != eCSSUnit_Null ||
|
|
val->mLeft.GetUnit() != eCSSUnit_Null) {
|
|
CDBRectStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBRectStorage*, cursor);
|
|
storage->property = iProp;
|
|
memcpy(&storage->value, val, sizeof(nsCSSRect));
|
|
new (val) nsCSSRect();
|
|
cursor += CDBRectStorage_advance;
|
|
present = PR_TRUE;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes:
|
|
case eCSSType_Shadow: {
|
|
void*& val = *NS_STATIC_CAST(void**, prop);
|
|
if (val) {
|
|
CDBPointerStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBPointerStorage*, cursor);
|
|
storage->property = iProp;
|
|
storage->value = val;
|
|
val = nsnull;
|
|
cursor += CDBPointerStorage_advance;
|
|
present = PR_TRUE;
|
|
}
|
|
} break;
|
|
}
|
|
if (present) {
|
|
result->mStyleBits |= nsCachedStyleData::GetBitForSID(
|
|
nsCSSProps::kSIDTable[iProp]);
|
|
}
|
|
}
|
|
}
|
|
|
|
result_normal->mBlockEnd = cursor_normal;
|
|
NS_ASSERTION(result_normal->DataSize() == ptrdiff_t(size.normal),
|
|
"size miscalculation");
|
|
if (result_important) {
|
|
result_important->mBlockEnd = cursor_important;
|
|
NS_ASSERTION(result_important->DataSize() == ptrdiff_t(size.important),
|
|
"size miscalculation");
|
|
}
|
|
|
|
ClearSets();
|
|
AssertInitialState();
|
|
*aNormalBlock = result_normal;
|
|
*aImportantBlock = result_important;
|
|
}
|
|
|
|
void
|
|
nsCSSExpandedDataBlock::Clear()
|
|
{
|
|
for (PRUint32 iHigh = 0; iHigh < NS_ARRAY_LENGTH(mPropertiesSet); ++iHigh) {
|
|
if (mPropertiesSet[iHigh] == 0)
|
|
continue;
|
|
for (PRInt32 iLow = 0; iLow < kPropertiesSetChunkSize; ++iLow) {
|
|
if ((mPropertiesSet[iHigh] & (1 << iLow)) == 0)
|
|
continue;
|
|
nsCSSProperty iProp =
|
|
nsCSSProperty(iHigh * kPropertiesSetChunkSize + iLow);
|
|
ClearProperty(iProp);
|
|
}
|
|
}
|
|
|
|
AssertInitialState();
|
|
}
|
|
|
|
void
|
|
nsCSSExpandedDataBlock::ClearProperty(nsCSSProperty aPropID)
|
|
{
|
|
NS_ASSERTION(0 <= aPropID && aPropID < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
|
|
ClearPropertyBit(aPropID);
|
|
ClearImportantBit(aPropID);
|
|
|
|
void *prop = PropertyAt(aPropID);
|
|
switch (nsCSSProps::kTypeTable[aPropID]) {
|
|
case eCSSType_Value: {
|
|
nsCSSValue* val = NS_STATIC_CAST(nsCSSValue*, prop);
|
|
val->Reset();
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
nsCSSRect* val = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
val->mTop.Reset();
|
|
val->mRight.Reset();
|
|
val->mBottom.Reset();
|
|
val->mLeft.Reset();
|
|
} break;
|
|
|
|
case eCSSType_ValueList: {
|
|
nsCSSValueList*& val = *NS_STATIC_CAST(nsCSSValueList**, prop);
|
|
if (val) {
|
|
delete val;
|
|
val = nsnull;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_CounterData: {
|
|
nsCSSCounterData*& val =
|
|
*NS_STATIC_CAST(nsCSSCounterData**, prop);
|
|
if (val) {
|
|
delete val;
|
|
val = nsnull;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_Quotes: {
|
|
nsCSSQuotes*& val = *NS_STATIC_CAST(nsCSSQuotes**, prop);
|
|
if (val) {
|
|
delete val;
|
|
val = nsnull;
|
|
}
|
|
} break;
|
|
|
|
case eCSSType_Shadow: {
|
|
nsCSSShadow*& val = *NS_STATIC_CAST(nsCSSShadow**, prop);
|
|
if (val) {
|
|
delete val;
|
|
val = nsnull;
|
|
}
|
|
} break;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
nsCSSExpandedDataBlock::DoAssertInitialState()
|
|
{
|
|
PRUint32 i;
|
|
for (i = 0; i < NS_ARRAY_LENGTH(mPropertiesSet); ++i) {
|
|
NS_ASSERTION(mPropertiesSet[i] == 0, "not initial state");
|
|
}
|
|
for (i = 0; i < NS_ARRAY_LENGTH(mPropertiesImportant); ++i) {
|
|
NS_ASSERTION(mPropertiesImportant[i] == 0, "not initial state");
|
|
}
|
|
|
|
for (i = 0; i < eCSSProperty_COUNT_no_shorthands; ++i) {
|
|
void *prop = PropertyAt(nsCSSProperty(i));
|
|
switch (nsCSSProps::kTypeTable[i]) {
|
|
case eCSSType_Value: {
|
|
nsCSSValue* val = NS_STATIC_CAST(nsCSSValue*, prop);
|
|
NS_ASSERTION(val->GetUnit() == eCSSUnit_Null,
|
|
"not initial state");
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
nsCSSRect* val = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
NS_ASSERTION(val->mTop.GetUnit() == eCSSUnit_Null,
|
|
"not initial state");
|
|
NS_ASSERTION(val->mRight.GetUnit() == eCSSUnit_Null,
|
|
"not initial state");
|
|
NS_ASSERTION(val->mBottom.GetUnit() == eCSSUnit_Null,
|
|
"not initial state");
|
|
NS_ASSERTION(val->mLeft.GetUnit() == eCSSUnit_Null,
|
|
"not initial state");
|
|
} break;
|
|
|
|
case eCSSType_ValueList: {
|
|
nsCSSValueList* val = *NS_STATIC_CAST(nsCSSValueList**, prop);
|
|
NS_ASSERTION(val == nsnull, "not initial state");
|
|
} break;
|
|
|
|
case eCSSType_CounterData: {
|
|
nsCSSCounterData* val =
|
|
*NS_STATIC_CAST(nsCSSCounterData**, prop);
|
|
NS_ASSERTION(val == nsnull, "not initial state");
|
|
} break;
|
|
|
|
case eCSSType_Quotes: {
|
|
nsCSSQuotes* val = *NS_STATIC_CAST(nsCSSQuotes**, prop);
|
|
NS_ASSERTION(val == nsnull, "not initial state");
|
|
} break;
|
|
|
|
case eCSSType_Shadow: {
|
|
nsCSSShadow* val = *NS_STATIC_CAST(nsCSSShadow**, prop);
|
|
NS_ASSERTION(val == nsnull, "not initial state");
|
|
} break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|