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Bug 1721265 Part 1 - Add method to ServoStyleSet to determine if the default page-size is landscape or portrait. r=emilio

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Differential Revision: https://phabricator.services.mozilla.com/D124975
This commit is contained in:
Emily McDonough 2021-09-21 16:38:53 +00:00
parent 2db29ccfa9
commit 4294039c89
2 changed files with 31 additions and 0 deletions
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22
layout/style/ServoStyleSet.cpp
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@ -631,6 +631,28 @@ StyleSheet* ServoStyleSet::SheetAt(Origin aOrigin, size_t aIndex) const {
Servo_StyleSet_GetSheetAt(mRawSet.get(), aOrigin, aIndex));
}
Maybe<StyleOrientation> ServoStyleSet::GetDefaultPageOrientation() {
const RefPtr<ComputedStyle> style =
ResolveNonInheritingAnonymousBoxStyle(PseudoStyleType::pageContent);
const StylePageSize& pageSize = style->StylePage()->mSize;
if (pageSize.IsOrientation()) {
return Some(pageSize.AsOrientation());
}
if (pageSize.IsSize()) {
const CSSCoord w = pageSize.AsSize().width.ToCSSPixels();
const CSSCoord h = pageSize.AsSize().height.ToCSSPixels();
if (w > h) {
return Some(StyleOrientation::Landscape);
}
if (w < h) {
return Some(StyleOrientation::Portrait);
}
} else {
MOZ_ASSERT(pageSize.IsAuto(), "Impossible page size");
}
return Nothing();
}
void ServoStyleSet::AppendAllNonDocumentAuthorSheets(
nsTArray<StyleSheet*>& aArray) const {
EnumerateShadowRoots(*mDocument, [&](ShadowRoot& aShadowRoot) {

9
layout/style/ServoStyleSet.h
View File

@ -11,6 +11,7 @@
#include "mozilla/AtomArray.h"
#include "mozilla/EnumeratedArray.h"
#include "mozilla/EventStates.h"
#include "mozilla/Maybe.h"
#include "mozilla/PostTraversalTask.h"
#include "mozilla/ServoBindingTypes.h"
#include "mozilla/ServoUtils.h"
@ -27,6 +28,7 @@
namespace mozilla {
enum class MediaFeatureChangeReason : uint16_t;
enum class StyleOrientation : uint8_t;
enum class StyleRuleChangeKind : uint32_t;
namespace css {
class Rule;
@ -233,6 +235,13 @@ class ServoStyleSet {
size_t SheetCount(Origin) const;
StyleSheet* SheetAt(Origin, size_t aIndex) const;
// Gets the default orientation of unnamed CSS pages.
// This will return portrait or landscape both for a landscape/portrait
// value to page-size, as well as for an explicit size or paper name which
// is not square.
// If the value is auto or square, then returns nothing.
Maybe<StyleOrientation> GetDefaultPageOrientation();
void AppendAllNonDocumentAuthorSheets(nsTArray<StyleSheet*>& aArray) const;
// Manage the set of style sheets in the style set