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/* -*- 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 "nsProgressFrame.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/HTMLProgressElement.h"
#include "nsIContent.h"
#include "nsLayoutUtils.h"
#include "nsPresContext.h"
#include "nsGkAtoms.h"
#include "nsNodeInfoManager.h"
#include "nsContentCreatorFunctions.h"
#include "nsFontMetrics.h"
#include <algorithm>
using namespace mozilla;
using namespace mozilla::dom;
nsIFrame* NS_NewProgressFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
return new (aPresShell) nsProgressFrame(aStyle, aPresShell->GetPresContext());
}
NS_IMPL_FRAMEARENA_HELPERS(nsProgressFrame)
nsProgressFrame::nsProgressFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsContainerFrame(aStyle, aPresContext, kClassID), mBarDiv(nullptr) {}
nsProgressFrame::~nsProgressFrame() = default;
void nsProgressFrame::Destroy(DestroyContext& aContext) {
NS_ASSERTION(!GetPrevContinuation(),
"nsProgressFrame should not have continuations; if it does we "
"need to call RegUnregAccessKey only for the first.");
aContext.AddAnonymousContent(mBarDiv.forget());
nsContainerFrame::Destroy(aContext);
}
nsresult nsProgressFrame::CreateAnonymousContent(
nsTArray<ContentInfo>& aElements) {
// Create the progress bar div.
nsCOMPtr<Document> doc = mContent->GetComposedDoc();
mBarDiv = doc->CreateHTMLElement(nsGkAtoms::div);
// Associate ::-moz-progress-bar pseudo-element to the anonymous child.
if (StaticPrefs::layout_css_modern_range_pseudos_enabled()) {
// TODO(emilio): Create also a slider-track pseudo-element.
mBarDiv->SetPseudoElementType(PseudoStyleType::sliderFill);
} else {
mBarDiv->SetPseudoElementType(PseudoStyleType::mozProgressBar);
}
// XXX(Bug 1631371) Check if this should use a fallible operation as it
// pretended earlier, or change the return type to void.
aElements.AppendElement(mBarDiv);
return NS_OK;
}
void nsProgressFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
uint32_t aFilter) {
if (mBarDiv) {
aElements.AppendElement(mBarDiv);
}
}
NS_QUERYFRAME_HEAD(nsProgressFrame)
NS_QUERYFRAME_ENTRY(nsProgressFrame)
NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
void nsProgressFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) {
BuildDisplayListForInline(aBuilder, aLists);
}
void nsProgressFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsProgressFrame");
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
NS_ASSERTION(mBarDiv, "Progress bar div must exist!");
NS_ASSERTION(
PrincipalChildList().GetLength() == 1 &&
PrincipalChildList().FirstChild() == mBarDiv->GetPrimaryFrame(),
"unexpected child frames");
NS_ASSERTION(!GetPrevContinuation(),
"nsProgressFrame should not have continuations; if it does we "
"need to call RegUnregAccessKey only for the first.");
const auto wm = aReflowInput.GetWritingMode();
const auto contentBoxSize = aReflowInput.ComputedSizeWithBSizeFallback([&] {
nscoord em = OneEmInAppUnits();
return ResolvedOrientationIsVertical() == wm.IsVertical() ? em : 10 * em;
});
aDesiredSize.SetSize(
wm,
contentBoxSize + aReflowInput.ComputedLogicalBorderPadding(wm).Size(wm));
aDesiredSize.SetOverflowAreasToDesiredBounds();
for (nsIFrame* childFrame : PrincipalChildList()) {
ReflowChildFrame(childFrame, aPresContext, aReflowInput, contentBoxSize,
aStatus);
ConsiderChildOverflow(aDesiredSize.mOverflowAreas, childFrame);
}
FinishAndStoreOverflow(&aDesiredSize);
aStatus.Reset(); // This type of frame can't be split.
}
void nsProgressFrame::ReflowChildFrame(nsIFrame* aChild,
nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
const LogicalSize& aParentContentBoxSize,
nsReflowStatus& aStatus) {
bool vertical = ResolvedOrientationIsVertical();
const WritingMode wm = aChild->GetWritingMode();
const LogicalSize parentSizeInChildWM =
aParentContentBoxSize.ConvertTo(wm, aReflowInput.GetWritingMode());
const nsSize parentPhysicalSize = parentSizeInChildWM.GetPhysicalSize(wm);
LogicalSize availSize = parentSizeInChildWM;
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
ReflowInput reflowInput(aPresContext, aReflowInput, aChild, availSize,
Some(parentSizeInChildWM));
nscoord size =
vertical ? parentPhysicalSize.Height() : parentPhysicalSize.Width();
nscoord xoffset = aReflowInput.ComputedPhysicalBorderPadding().left;
nscoord yoffset = aReflowInput.ComputedPhysicalBorderPadding().top;
double position = static_cast<HTMLProgressElement*>(GetContent())->Position();
// Force the bar's size to match the current progress.
// When indeterminate, the progress' size will be 100%.
if (position >= 0.0) {
size *= position;
}
if (!vertical && wm.IsPhysicalRTL()) {
xoffset += parentPhysicalSize.Width() - size;
}
// The bar size is fixed in these cases:
// - the progress position is determined: the bar size is fixed according
// to it's value.
// - the progress position is indeterminate and the bar appearance should be
// shown as native: the bar size is forced to 100%.
// Otherwise (when the progress is indeterminate and the bar appearance isn't
// native), the bar size isn't fixed and can be set by the author.
if (position != -1 || ShouldUseNativeStyle()) {
if (vertical) {
// We want the bar to begin at the bottom.
yoffset += parentPhysicalSize.Height() - size;
size -= reflowInput.ComputedPhysicalMargin().TopBottom() +
reflowInput.ComputedPhysicalBorderPadding().TopBottom();
size = std::max(size, 0);
reflowInput.SetComputedHeight(size);
} else {
size -= reflowInput.ComputedPhysicalMargin().LeftRight() +
reflowInput.ComputedPhysicalBorderPadding().LeftRight();
size = std::max(size, 0);
reflowInput.SetComputedWidth(size);
}
} else if (vertical) {
// For vertical progress bars, we need to position the bar specifically when
// the width isn't constrained (position == -1 and !ShouldUseNativeStyle())
// because parentPhysiscalSize.Height() - size == 0.
// FIXME(emilio): This assumes that the bar's height is constrained, which
// seems like a wrong assumption?
yoffset += parentPhysicalSize.Height() - reflowInput.ComputedHeight();
}
xoffset += reflowInput.ComputedPhysicalMargin().left;
yoffset += reflowInput.ComputedPhysicalMargin().top;
ReflowOutput barDesiredSize(aReflowInput);
ReflowChild(aChild, aPresContext, barDesiredSize, reflowInput, xoffset,
yoffset, ReflowChildFlags::Default, aStatus);
FinishReflowChild(aChild, aPresContext, barDesiredSize, &reflowInput, xoffset,
yoffset, ReflowChildFlags::Default);
}
nsresult nsProgressFrame::AttributeChanged(int32_t aNameSpaceID,
nsAtom* aAttribute,
int32_t aModType) {
NS_ASSERTION(mBarDiv, "Progress bar div must exist!");
if (aNameSpaceID == kNameSpaceID_None &&
(aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max)) {
auto presShell = PresShell();
for (auto childFrame : PrincipalChildList()) {
presShell->FrameNeedsReflow(childFrame, IntrinsicDirty::None,
NS_FRAME_IS_DIRTY);
}
InvalidateFrame();
}
return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
nscoord nsProgressFrame::GetMinISize(gfxContext* aRenderingContext) {
nscoord minISize = OneEmInAppUnits();
if (ResolvedOrientationIsVertical() == GetWritingMode().IsVertical()) {
minISize *= 10;
}
return minISize;
}
nscoord nsProgressFrame::GetPrefISize(gfxContext* aRenderingContext) {
return GetMinISize(aRenderingContext);
}
bool nsProgressFrame::ShouldUseNativeStyle() const {
nsIFrame* barFrame = PrincipalChildList().FirstChild();
// Use the native style if these conditions are satisfied:
// - both frames use the native appearance;
// - neither frame has author specified rules setting the border or the
// background.
return StyleDisplay()->EffectiveAppearance() ==
StyleAppearance::ProgressBar &&
!Style()->HasAuthorSpecifiedBorderOrBackground() && barFrame &&
barFrame->StyleDisplay()->EffectiveAppearance() ==
StyleAppearance::Progresschunk &&
!barFrame->Style()->HasAuthorSpecifiedBorderOrBackground();
}
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