/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "FlexItemValues.h"
#include "mozilla/dom/DOMRect.h"
#include "mozilla/dom/FlexBinding.h"
#include "mozilla/dom/FlexLineValues.h"
#include "nsFlexContainerFrame.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(FlexItemValues, mParent, mNode,
mFrameRect)
NS_IMPL_CYCLE_COLLECTING_ADDREF(FlexItemValues)
NS_IMPL_CYCLE_COLLECTING_RELEASE(FlexItemValues)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FlexItemValues)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
/**
* Utility function to convert a nscoord size to CSS pixel values, with
* graceful treatment of NS_UNCONSTRAINEDSIZE (which this function converts to
* the double "positive infinity" value).
*
* This function is suitable for converting quantities that are expected to
* sometimes legitimately (rather than arbitrarily/accidentally) contain the
* sentinel value NS_UNCONSTRAINEDSIZE -- e.g. to handle "max-width: none".
*/
static double ToPossiblyUnconstrainedPixels(nscoord aSize) {
if (aSize == NS_UNCONSTRAINEDSIZE) {
return std::numeric_limits<
double>::infinity();
}
return nsPresContext::AppUnitsToDoubleCSSPixels(aSize);
}
FlexItemValues::FlexItemValues(FlexLineValues* aParent,
const ComputedFlexItemInfo* aItem)
: mParent(aParent) {
MOZ_ASSERT(aItem,
"Should never be instantiated with a null ComputedFlexLineInfo.");
// Eagerly copy values from aItem, because we're not
// going to keep it around.
mNode = aItem->mNode;
// Since mNode might be null, we associate the mFrameRect with
// our parent.
mFrameRect =
new DOMRectReadOnly(
mParent, nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mFrameRect.X()),
nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mFrameRect.Y()),
nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mFrameRect.Width()),
nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mFrameRect.Height()));
// Convert app unit sizes to css pixel sizes.
mMainBaseSize =
nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mMainBaseSize);
mMainDeltaSize =
nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mMainDeltaSize);
mMainMinSize = nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mMainMinSize);
mMainMaxSize = ToPossiblyUnconstrainedPixels(aItem->mMainMaxSize);
mCrossMinSize =
nsPresContext::AppUnitsToDoubleCSSPixels(aItem->mCrossMinSize);
mCrossMaxSize = ToPossiblyUnconstrainedPixels(aItem->mCrossMaxSize);
mClampState = aItem->mClampState;
}
JSObject* FlexItemValues::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return FlexItemValues_Binding::Wrap(aCx,
this, aGivenProto);
}
nsINode* FlexItemValues::GetNode()
const {
return mNode; }
DOMRectReadOnly* FlexItemValues::FrameRect()
const {
return mFrameRect; }
double FlexItemValues::MainBaseSize()
const {
return mMainBaseSize; }
double FlexItemValues::MainDeltaSize()
const {
return mMainDeltaSize; }
double FlexItemValues::MainMinSize()
const {
return mMainMinSize; }
double FlexItemValues::MainMaxSize()
const {
return mMainMaxSize; }
double FlexItemValues::CrossMinSize()
const {
return mCrossMinSize; }
double FlexItemValues::CrossMaxSize()
const {
return mCrossMaxSize; }
FlexItemClampState FlexItemValues::ClampState()
const {
return mClampState; }
}
// namespace mozilla::dom
