mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
987 lines
38 KiB
C++
987 lines
38 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is nsCSSDataBlock.cpp.
|
|
*
|
|
* The Initial Developer of the Original Code is L. David Baron.
|
|
* Portions created by the Initial Developer are Copyright (C) 2003
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* L. David Baron <dbaron@dbaron.org> (original author)
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/*
|
|
* compact representation of the property-value pairs within a CSS
|
|
* declaration, and the code for expanding and compacting it
|
|
*/
|
|
|
|
#include "nsCSSDataBlock.h"
|
|
#include "nsCSSProps.h"
|
|
#include "nsRuleData.h"
|
|
#include "nsRuleNode.h"
|
|
#include "nsStyleSet.h"
|
|
|
|
/*
|
|
* nsCSSCompressedDataBlock holds property-value pairs corresponding to
|
|
* CSS declaration blocks. The value is stored in one of the six CSS
|
|
* data types. These six types are nsCSSValue, nsCSSRect,
|
|
* nsCSSValueList, nsCSSCounterData, nsCSSQuotes, and nsCSSValuePair, and
|
|
* each correspond to a value of the nsCSSType enumeration.
|
|
*
|
|
* The storage strategy uses the CDB*Storage structs below to help
|
|
* ensure that all the types remain properly aligned. nsCSSValue's
|
|
* alignment requirements cannot be weaker than any others, since it
|
|
* contains a pointer and an enumeration.
|
|
*
|
|
* The simple types, nsCSSValue and nsCSSRect have the nsCSSValue or
|
|
* nsCSSRect objects stored in the block. The list types have only a
|
|
* pointer to the first element in the list stored in the block.
|
|
*/
|
|
|
|
struct CDBValueStorage {
|
|
nsCSSProperty property;
|
|
nsCSSValue value;
|
|
};
|
|
|
|
struct CDBRectStorage {
|
|
nsCSSProperty property;
|
|
nsCSSRect value;
|
|
|
|
};
|
|
|
|
struct CDBValuePairStorage {
|
|
nsCSSProperty property;
|
|
nsCSSValuePair value;
|
|
};
|
|
|
|
struct CDBPointerStorage {
|
|
nsCSSProperty property;
|
|
void *value;
|
|
};
|
|
|
|
enum {
|
|
CDBValueStorage_advance = sizeof(CDBValueStorage),
|
|
CDBRectStorage_advance = sizeof(CDBRectStorage),
|
|
CDBValuePairStorage_advance = sizeof(CDBValuePairStorage),
|
|
// round up using the closest estimate we can get of the alignment
|
|
// requirements of nsCSSValue:
|
|
CDBPointerStorage_advance = PR_ROUNDUP(sizeof(CDBPointerStorage),
|
|
sizeof(CDBValueStorage) - sizeof(nsCSSValue))
|
|
};
|
|
|
|
/*
|
|
* Define a bunch of utility functions for getting the property or any
|
|
* of the value types when the cursor is at the beginning of the storage
|
|
* for the property-value pair. The versions taking a non-const cursor
|
|
* argument return a reference so that the caller can assign into the
|
|
* result.
|
|
*/
|
|
|
|
inline nsCSSProperty& PropertyAtCursor(char *aCursor) {
|
|
return *NS_REINTERPRET_CAST(nsCSSProperty*, aCursor);
|
|
}
|
|
|
|
inline nsCSSProperty PropertyAtCursor(const char *aCursor) {
|
|
return *NS_REINTERPRET_CAST(const nsCSSProperty*, aCursor);
|
|
}
|
|
|
|
inline nsCSSValue* ValueAtCursor(char *aCursor) {
|
|
return & NS_REINTERPRET_CAST(CDBValueStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline const nsCSSValue* ValueAtCursor(const char *aCursor) {
|
|
return & NS_REINTERPRET_CAST(const CDBValueStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline nsCSSRect* RectAtCursor(char *aCursor) {
|
|
return & NS_REINTERPRET_CAST(CDBRectStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline const nsCSSRect* RectAtCursor(const char *aCursor) {
|
|
return & NS_REINTERPRET_CAST(const CDBRectStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline nsCSSValuePair* ValuePairAtCursor(char *aCursor) {
|
|
return & NS_REINTERPRET_CAST(CDBValuePairStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline const nsCSSValuePair* ValuePairAtCursor(const char *aCursor) {
|
|
return & NS_REINTERPRET_CAST(const CDBValuePairStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline void*& PointerAtCursor(char *aCursor) {
|
|
return NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline void* PointerAtCursor(const char *aCursor) {
|
|
return NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value;
|
|
}
|
|
|
|
inline nsCSSValueList*& ValueListAtCursor(char *aCursor) {
|
|
return * NS_REINTERPRET_CAST(nsCSSValueList**,
|
|
& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
|
|
}
|
|
|
|
inline nsCSSValueList* ValueListAtCursor(const char *aCursor) {
|
|
return NS_STATIC_CAST(nsCSSValueList*,
|
|
NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
|
|
}
|
|
|
|
inline nsCSSCounterData*& CounterDataAtCursor(char *aCursor) {
|
|
return * NS_REINTERPRET_CAST(nsCSSCounterData**,
|
|
& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
|
|
}
|
|
|
|
inline nsCSSCounterData* CounterDataAtCursor(const char *aCursor) {
|
|
return NS_STATIC_CAST(nsCSSCounterData*,
|
|
NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
|
|
}
|
|
|
|
inline nsCSSQuotes*& QuotesAtCursor(char *aCursor) {
|
|
return * NS_REINTERPRET_CAST(nsCSSQuotes**,
|
|
& NS_REINTERPRET_CAST(CDBPointerStorage*, aCursor)->value);
|
|
}
|
|
|
|
inline nsCSSQuotes* QuotesAtCursor(const char *aCursor) {
|
|
return NS_STATIC_CAST(nsCSSQuotes*,
|
|
NS_REINTERPRET_CAST(const CDBPointerStorage*, aCursor)->value);
|
|
}
|
|
|
|
static PRBool
|
|
ShouldIgnoreColors(nsRuleData *aRuleData)
|
|
{
|
|
nsPresContext *presContext = aRuleData->mPresContext;
|
|
return aRuleData->mLevel != nsStyleSet::eAgentSheet &&
|
|
aRuleData->mLevel != nsStyleSet::eUserSheet &&
|
|
!presContext->GetCachedBoolPref(kPresContext_UseDocumentColors) &&
|
|
!presContext->IsChrome();
|
|
}
|
|
|
|
nsresult
|
|
nsCSSCompressedDataBlock::MapRuleInfoInto(nsRuleData *aRuleData) const
|
|
{
|
|
// If we have no data for this struct, then return immediately.
|
|
// This optimization should make us return most of the time, so we
|
|
// have to worry much less (although still some) about the speed of
|
|
// the rest of the function.
|
|
if (!(nsCachedStyleData::GetBitForSID(aRuleData->mSID) & mStyleBits))
|
|
return NS_OK;
|
|
|
|
const char* cursor = Block();
|
|
const char* cursor_end = BlockEnd();
|
|
while (cursor < cursor_end) {
|
|
nsCSSProperty iProp = PropertyAtCursor(cursor);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
if (nsCSSProps::kSIDTable[iProp] == aRuleData->mSID) {
|
|
void *prop =
|
|
nsCSSExpandedDataBlock::RuleDataPropertyAt(aRuleData, iProp);
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
nsCSSValue* target = NS_STATIC_CAST(nsCSSValue*, prop);
|
|
if (target->GetUnit() == eCSSUnit_Null) {
|
|
const nsCSSValue *val = ValueAtCursor(cursor);
|
|
NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
|
|
if ((iProp == eCSSProperty_background_image ||
|
|
iProp == eCSSProperty_list_style_image) &&
|
|
val->GetUnit() == eCSSUnit_URL) {
|
|
val->StartImageLoad(aRuleData->mPresContext->Document(),
|
|
iProp == eCSSProperty_background_image);
|
|
}
|
|
*target = *val;
|
|
if (iProp == eCSSProperty_font_family) {
|
|
// XXX Are there other things like this?
|
|
aRuleData->mFontData->mFamilyFromHTML = PR_FALSE;
|
|
}
|
|
else if (iProp == eCSSProperty_color ||
|
|
iProp == eCSSProperty_background_color ||
|
|
iProp == eCSSProperty_background_image ||
|
|
iProp == eCSSProperty_border_top_color ||
|
|
iProp == eCSSProperty_border_right_color ||
|
|
iProp == eCSSProperty_border_bottom_color ||
|
|
iProp == eCSSProperty_border_left_color ||
|
|
iProp == eCSSProperty_outline_color) {
|
|
if (ShouldIgnoreColors(aRuleData)) {
|
|
if (iProp == eCSSProperty_background_color) {
|
|
// Force non-'transparent' background
|
|
// colors to the user's default.
|
|
nsCSSUnit u = target->GetUnit();
|
|
if (u != eCSSUnit_Enumerated &&
|
|
u != eCSSUnit_Inherit &&
|
|
u != eCSSUnit_Initial) {
|
|
target->SetColorValue(aRuleData->
|
|
mPresContext->
|
|
DefaultBackgroundColor());
|
|
}
|
|
} else {
|
|
// Ignore 'color', 'border-*-color', and
|
|
// 'background-image'
|
|
*target = nsCSSValue();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
const nsCSSRect* val = RectAtCursor(cursor);
|
|
NS_ASSERTION(val->HasValue(), "oops");
|
|
nsCSSRect* target = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
if (target->mTop.GetUnit() == eCSSUnit_Null)
|
|
target->mTop = val->mTop;
|
|
if (target->mRight.GetUnit() == eCSSUnit_Null)
|
|
target->mRight = val->mRight;
|
|
if (target->mBottom.GetUnit() == eCSSUnit_Null)
|
|
target->mBottom = val->mBottom;
|
|
if (target->mLeft.GetUnit() == eCSSUnit_Null)
|
|
target->mLeft = val->mLeft;
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
const nsCSSValuePair* val = ValuePairAtCursor(cursor);
|
|
NS_ASSERTION(val->mXValue.GetUnit() != eCSSUnit_Null ||
|
|
val->mYValue.GetUnit() != eCSSUnit_Null, "oops");
|
|
nsCSSValuePair* target = NS_STATIC_CAST(nsCSSValuePair*, prop);
|
|
if (target->mXValue.GetUnit() == eCSSUnit_Null)
|
|
target->mXValue = val->mXValue;
|
|
if (target->mYValue.GetUnit() == eCSSUnit_Null)
|
|
target->mYValue = val->mYValue;
|
|
cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
if (iProp == eCSSProperty_content) {
|
|
for (nsCSSValueList* l = ValueListAtCursor(cursor);
|
|
l; l = l->mNext)
|
|
if (l->mValue.GetUnit() == eCSSUnit_URL)
|
|
l->mValue.StartImageLoad(
|
|
aRuleData->mPresContext->Document());
|
|
} else if (iProp == eCSSProperty_cursor) {
|
|
for (nsCSSValueList* l = ValueListAtCursor(cursor);
|
|
l; l = l->mNext)
|
|
if (l->mValue.GetUnit() == eCSSUnit_Array) {
|
|
// Don't try to restart loads we've already
|
|
// started
|
|
nsCSSValue& val =
|
|
l->mValue.GetArrayValue()->Item(0);
|
|
if (val.GetUnit() == eCSSUnit_URL)
|
|
val.StartImageLoad(
|
|
aRuleData->mPresContext->Document());
|
|
}
|
|
}
|
|
// fall through
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
void** target = NS_STATIC_CAST(void**, prop);
|
|
if (!*target) {
|
|
void* val = PointerAtCursor(cursor);
|
|
NS_ASSERTION(val, "oops");
|
|
*target = val;
|
|
|
|
if (iProp == eCSSProperty_border_top_colors ||
|
|
iProp == eCSSProperty_border_right_colors ||
|
|
iProp == eCSSProperty_border_bottom_colors ||
|
|
iProp == eCSSProperty_border_left_colors) {
|
|
if (ShouldIgnoreColors(aRuleData)) {
|
|
*target = nsnull;
|
|
}
|
|
}
|
|
}
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
} else {
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
}
|
|
}
|
|
NS_ASSERTION(cursor == cursor_end, "inconsistent data");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
const void*
|
|
nsCSSCompressedDataBlock::StorageFor(nsCSSProperty aProperty) const
|
|
{
|
|
// If we have no data for this struct, then return immediately.
|
|
// This optimization should make us return most of the time, so we
|
|
// have to worry much less (although still some) about the speed of
|
|
// the rest of the function.
|
|
if (!(nsCachedStyleData::GetBitForSID(nsCSSProps::kSIDTable[aProperty]) &
|
|
mStyleBits))
|
|
return nsnull;
|
|
|
|
const char* cursor = Block();
|
|
const char* cursor_end = BlockEnd();
|
|
while (cursor < cursor_end) {
|
|
nsCSSProperty iProp = PropertyAtCursor(cursor);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
if (iProp == aProperty) {
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
return ValueAtCursor(cursor);
|
|
}
|
|
case eCSSType_Rect: {
|
|
return RectAtCursor(cursor);
|
|
}
|
|
case eCSSType_ValuePair: {
|
|
return ValuePairAtCursor(cursor);
|
|
}
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
return &PointerAtCursor(NS_CONST_CAST(char*, cursor));
|
|
}
|
|
}
|
|
}
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
}
|
|
NS_ASSERTION(cursor == cursor_end, "inconsistent data");
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
nsCSSCompressedDataBlock*
|
|
nsCSSCompressedDataBlock::Clone() const
|
|
{
|
|
const char *cursor = Block(), *cursor_end = BlockEnd();
|
|
char *result_cursor;
|
|
|
|
nsCSSCompressedDataBlock *result =
|
|
new(cursor_end - cursor) nsCSSCompressedDataBlock();
|
|
if (!result)
|
|
return nsnull;
|
|
result_cursor = result->Block();
|
|
|
|
while (cursor < cursor_end) {
|
|
nsCSSProperty iProp = PropertyAtCursor(cursor);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
PropertyAtCursor(result_cursor) = iProp;
|
|
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
const nsCSSValue* val = ValueAtCursor(cursor);
|
|
NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
|
|
nsCSSValue *result_val = ValueAtCursor(result_cursor);
|
|
new (result_val) nsCSSValue(*val);
|
|
cursor += CDBValueStorage_advance;
|
|
result_cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
const nsCSSRect* val = RectAtCursor(cursor);
|
|
NS_ASSERTION(val->HasValue(), "oops");
|
|
nsCSSRect* result_val = RectAtCursor(result_cursor);
|
|
new (result_val) nsCSSRect(*val);
|
|
cursor += CDBRectStorage_advance;
|
|
result_cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
const nsCSSValuePair* val = ValuePairAtCursor(cursor);
|
|
NS_ASSERTION(val->mXValue.GetUnit() != eCSSUnit_Null ||
|
|
val->mYValue.GetUnit() != eCSSUnit_Null, "oops");
|
|
nsCSSValuePair* result_val = ValuePairAtCursor(result_cursor);
|
|
new (result_val) nsCSSValuePair(*val);
|
|
cursor += CDBValuePairStorage_advance;
|
|
result_cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
void *copy;
|
|
NS_ASSERTION(PointerAtCursor(cursor), "oops");
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
default:
|
|
NS_NOTREACHED("unreachable");
|
|
// fall through to keep gcc's uninitialized
|
|
// variable warning quiet
|
|
case eCSSType_ValueList:
|
|
copy = new nsCSSValueList(*ValueListAtCursor(cursor));
|
|
break;
|
|
case eCSSType_CounterData:
|
|
copy =
|
|
new nsCSSCounterData(*CounterDataAtCursor(cursor));
|
|
break;
|
|
case eCSSType_Quotes:
|
|
copy = new nsCSSQuotes(*QuotesAtCursor(cursor));
|
|
break;
|
|
}
|
|
if (!copy) {
|
|
result->mBlockEnd = result_cursor;
|
|
result->Destroy();
|
|
return nsnull;
|
|
}
|
|
PointerAtCursor(result_cursor) = copy;
|
|
cursor += CDBPointerStorage_advance;
|
|
result_cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
}
|
|
NS_ASSERTION(cursor == cursor_end, "inconsistent data");
|
|
|
|
result->mBlockEnd = result_cursor;
|
|
result->mStyleBits = mStyleBits;
|
|
NS_ASSERTION(result->DataSize() == DataSize(), "wrong size");
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsCSSCompressedDataBlock::Destroy()
|
|
{
|
|
const char* cursor = Block();
|
|
const char* cursor_end = BlockEnd();
|
|
while (cursor < cursor_end) {
|
|
nsCSSProperty iProp = PropertyAtCursor(cursor);
|
|
NS_ASSERTION(0 <= iProp && iProp < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
|
|
switch (nsCSSProps::kTypeTable[iProp]) {
|
|
case eCSSType_Value: {
|
|
const nsCSSValue* val = ValueAtCursor(cursor);
|
|
NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
|
|
val->~nsCSSValue();
|
|
cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
const nsCSSRect* val = RectAtCursor(cursor);
|
|
NS_ASSERTION(val->HasValue(), "oops");
|
|
val->~nsCSSRect();
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
const nsCSSValuePair* val = ValuePairAtCursor(cursor);
|
|
NS_ASSERTION(val->mXValue.GetUnit() != eCSSUnit_Null ||
|
|
val->mYValue.GetUnit() != eCSSUnit_Null, "oops");
|
|
val->~nsCSSValuePair();
|
|
cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList: {
|
|
nsCSSValueList* val = ValueListAtCursor(cursor);
|
|
NS_ASSERTION(val, "oops");
|
|
delete val;
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_CounterData: {
|
|
nsCSSCounterData* val = CounterDataAtCursor(cursor);
|
|
NS_ASSERTION(val, "oops");
|
|
delete val;
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Quotes: {
|
|
nsCSSQuotes* val = QuotesAtCursor(cursor);
|
|
NS_ASSERTION(val, "oops");
|
|
delete val;
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
}
|
|
NS_ASSERTION(cursor == cursor_end, "inconsistent data");
|
|
delete this;
|
|
}
|
|
|
|
/* static */ nsCSSCompressedDataBlock*
|
|
nsCSSCompressedDataBlock::CreateEmptyBlock()
|
|
{
|
|
nsCSSCompressedDataBlock *result = new(0) nsCSSCompressedDataBlock();
|
|
if (!result)
|
|
return nsnull;
|
|
result->mBlockEnd = result->Block();
|
|
return result;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
nsCSSExpandedDataBlock::nsCSSExpandedDataBlock()
|
|
{
|
|
ClearSets();
|
|
AssertInitialState();
|
|
}
|
|
|
|
nsCSSExpandedDataBlock::~nsCSSExpandedDataBlock()
|
|
{
|
|
AssertInitialState();
|
|
}
|
|
|
|
const nsCSSExpandedDataBlock::PropertyOffsetInfo
|
|
nsCSSExpandedDataBlock::kOffsetTable[eCSSProperty_COUNT_no_shorthands] = {
|
|
#define CSS_PROP_BACKENDONLY(name_, id_, method_, datastruct_, member_, type_, kwtable_) \
|
|
{ offsetof(nsCSSExpandedDataBlock, m##datastruct_.member_), \
|
|
size_t(-1), \
|
|
size_t(-1) },
|
|
#define CSS_PROP(name_, id_, method_, datastruct_, member_, type_, kwtable_) \
|
|
{ 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->HasValue(), "oops");
|
|
memcpy(prop, val, sizeof(nsCSSRect));
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
const nsCSSValuePair* val = ValuePairAtCursor(cursor);
|
|
NS_ASSERTION(val->mXValue.GetUnit() != eCSSUnit_Null ||
|
|
val->mYValue.GetUnit() != eCSSUnit_Null, "oops");
|
|
memcpy(prop, val, sizeof(nsCSSValuePair));
|
|
cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
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: {
|
|
#ifdef DEBUG
|
|
nsCSSValue* val = NS_STATIC_CAST(nsCSSValue*, prop);
|
|
NS_ASSERTION(val->GetUnit() != eCSSUnit_Null,
|
|
"null value while computing size");
|
|
#endif
|
|
increment = CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
#ifdef DEBUG
|
|
nsCSSRect* val = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
NS_ASSERTION(val->HasValue(),
|
|
"Valueless rect while computing size");
|
|
#endif
|
|
increment = CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
#ifdef DEBUG
|
|
nsCSSValuePair* val = NS_STATIC_CAST(nsCSSValuePair*, prop);
|
|
NS_ASSERTION(val->mXValue.GetUnit() != eCSSUnit_Null ||
|
|
val->mYValue.GetUnit() != eCSSUnit_Null,
|
|
"Valueless pair while computing size");
|
|
#endif
|
|
increment = CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
#ifdef DEBUG
|
|
void* val = *NS_STATIC_CAST(void**, prop);
|
|
NS_ASSERTION(val, "Null pointer while computing size");
|
|
#endif
|
|
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 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);
|
|
NS_ASSERTION(val->GetUnit() != eCSSUnit_Null,
|
|
"Null value while compressing");
|
|
CDBValueStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBValueStorage*, cursor);
|
|
storage->property = iProp;
|
|
memcpy(&storage->value, val, sizeof(nsCSSValue));
|
|
new (val) nsCSSValue();
|
|
cursor += CDBValueStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_Rect: {
|
|
nsCSSRect* val = NS_STATIC_CAST(nsCSSRect*, prop);
|
|
NS_ASSERTION(val->HasValue(),
|
|
"Valueless rect while compressing");
|
|
CDBRectStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBRectStorage*, cursor);
|
|
storage->property = iProp;
|
|
memcpy(&storage->value, val, sizeof(nsCSSRect));
|
|
new (val) nsCSSRect();
|
|
cursor += CDBRectStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
nsCSSValuePair* val = NS_STATIC_CAST(nsCSSValuePair*, prop);
|
|
NS_ASSERTION(val->mXValue.GetUnit() != eCSSUnit_Null ||
|
|
val->mYValue.GetUnit() != eCSSUnit_Null,
|
|
"Valueless pair while compressing");
|
|
CDBValuePairStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBValuePairStorage*, cursor);
|
|
storage->property = iProp;
|
|
memcpy(&storage->value, val, sizeof(nsCSSValuePair));
|
|
new (val) nsCSSValuePair();
|
|
cursor += CDBValuePairStorage_advance;
|
|
} break;
|
|
|
|
case eCSSType_ValueList:
|
|
case eCSSType_CounterData:
|
|
case eCSSType_Quotes: {
|
|
void*& val = *NS_STATIC_CAST(void**, prop);
|
|
NS_ASSERTION(val, "Null pointer while compressing");
|
|
CDBPointerStorage *storage =
|
|
NS_REINTERPRET_CAST(CDBPointerStorage*, cursor);
|
|
storage->property = iProp;
|
|
storage->value = val;
|
|
val = nsnull;
|
|
cursor += CDBPointerStorage_advance;
|
|
} break;
|
|
}
|
|
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->Reset();
|
|
} break;
|
|
|
|
case eCSSType_ValuePair: {
|
|
nsCSSValuePair* val = NS_STATIC_CAST(nsCSSValuePair*, prop);
|
|
val->mXValue.Reset();
|
|
val->mYValue.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;
|
|
}
|
|
}
|
|
|
|
#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_ValuePair: {
|
|
nsCSSValuePair* val = NS_STATIC_CAST(nsCSSValuePair*, prop);
|
|
NS_ASSERTION(val->mXValue.GetUnit() == eCSSUnit_Null,
|
|
"not initial state");
|
|
NS_ASSERTION(val->mYValue.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;
|
|
}
|
|
}
|
|
}
|
|
#endif
|