/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* 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 "nsIContent.h" #include "nsPresContext.h" #include "nsGkAtoms.h" #include "nsNameSpaceManager.h" #include "nsIDocument.h" #include "nsIPresShell.h" #include "nsNodeInfoManager.h" #include "nsContentCreatorFunctions.h" #include "nsContentUtils.h" #include "nsFormControlFrame.h" #include "nsFontMetrics.h" #include "mozilla/dom/Element.h" #include "mozilla/dom/HTMLProgressElement.h" #include "nsContentList.h" #include "nsCSSPseudoElements.h" #include "nsStyleSet.h" #include "mozilla/StyleSetHandle.h" #include "mozilla/StyleSetHandleInlines.h" #include "nsThemeConstants.h" #include <algorithm> using namespace mozilla; using namespace mozilla::dom; nsIFrame* NS_NewProgressFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsProgressFrame(aContext); } NS_IMPL_FRAMEARENA_HELPERS(nsProgressFrame) nsProgressFrame::nsProgressFrame(nsStyleContext* aContext) : nsContainerFrame(aContext) , mBarDiv(nullptr) { } nsProgressFrame::~nsProgressFrame() { } void nsProgressFrame::DestroyFrom(nsIFrame* aDestructRoot) { NS_ASSERTION(!GetPrevContinuation(), "nsProgressFrame should not have continuations; if it does we " "need to call RegUnregAccessKey only for the first."); nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false); nsContentUtils::DestroyAnonymousContent(&mBarDiv); nsContainerFrame::DestroyFrom(aDestructRoot); } nsIAtom* nsProgressFrame::GetType() const { return nsGkAtoms::progressFrame; } nsresult nsProgressFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements) { // Create the progress bar div. nsCOMPtr<nsIDocument> doc = mContent->GetComposedDoc(); mBarDiv = doc->CreateHTMLElement(nsGkAtoms::div); // Associate ::-moz-progress-bar pseudo-element to the anonymous child. CSSPseudoElementType pseudoType = CSSPseudoElementType::mozProgressBar; RefPtr<nsStyleContext> newStyleContext = PresContext()->StyleSet()-> ResolvePseudoElementStyle(mContent->AsElement(), pseudoType, StyleContext(), mBarDiv->AsElement()); if (!aElements.AppendElement(ContentInfo(mBarDiv, newStyleContext))) { return NS_ERROR_OUT_OF_MEMORY; } 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"); DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus); 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."); if (mState & NS_FRAME_FIRST_REFLOW) { nsFormControlFrame::RegUnRegAccessKey(this, true); } aDesiredSize.SetSize(aReflowInput.GetWritingMode(), aReflowInput.ComputedSizeWithBorderPadding()); aDesiredSize.SetOverflowAreasToDesiredBounds(); for (auto childFrame : PrincipalChildList()) { ReflowChildFrame(childFrame, aPresContext, aReflowInput, aStatus); ConsiderChildOverflow(aDesiredSize.mOverflowAreas, childFrame); } FinishAndStoreOverflow(&aDesiredSize); aStatus = NS_FRAME_COMPLETE; NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize); } void nsProgressFrame::ReflowChildFrame(nsIFrame* aChild, nsPresContext* aPresContext, const ReflowInput& aReflowInput, nsReflowStatus& aStatus) { bool vertical = ResolvedOrientationIsVertical(); WritingMode wm = aChild->GetWritingMode(); LogicalSize availSize = aReflowInput.ComputedSize(wm); availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE; ReflowInput reflowInput(aPresContext, aReflowInput, aChild, availSize); nscoord size = vertical ? aReflowInput.ComputedHeight() : aReflowInput.ComputedWidth(); nscoord xoffset = aReflowInput.ComputedPhysicalBorderPadding().left; nscoord yoffset = aReflowInput.ComputedPhysicalBorderPadding().top; double position = static_cast<HTMLProgressElement*>(mContent)->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.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR())) { xoffset += aReflowInput.ComputedWidth() - 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 += aReflowInput.ComputedHeight() - 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 specificly when // the width isn't constrained (position == -1 and !ShouldUseNativeStyle()) // because aReflowInput.ComputedHeight() - size == 0. yoffset += aReflowInput.ComputedHeight() - reflowInput.ComputedHeight(); } xoffset += reflowInput.ComputedPhysicalMargin().left; yoffset += reflowInput.ComputedPhysicalMargin().top; ReflowOutput barDesiredSize(aReflowInput); ReflowChild(aChild, aPresContext, barDesiredSize, reflowInput, xoffset, yoffset, 0, aStatus); FinishReflowChild(aChild, aPresContext, barDesiredSize, &reflowInput, xoffset, yoffset, 0); } nsresult nsProgressFrame::AttributeChanged(int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType) { NS_ASSERTION(mBarDiv, "Progress bar div must exist!"); if (aNameSpaceID == kNameSpaceID_None && (aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max)) { auto shell = PresContext()->PresShell(); for (auto childFrame : PrincipalChildList()) { shell->FrameNeedsReflow(childFrame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY); } InvalidateFrame(); } return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType); } LogicalSize nsProgressFrame::ComputeAutoSize(nsRenderingContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize, nscoord aAvailableISize, const LogicalSize& aMargin, const LogicalSize& aBorder, const LogicalSize& aPadding, ComputeSizeFlags aFlags) { const WritingMode wm = GetWritingMode(); LogicalSize autoSize(wm); autoSize.BSize(wm) = autoSize.ISize(wm) = NSToCoordRound(StyleFont()->mFont.size * nsLayoutUtils::FontSizeInflationFor(this)); // 1em if (ResolvedOrientationIsVertical() == wm.IsVertical()) { autoSize.ISize(wm) *= 10; // 10em } else { autoSize.BSize(wm) *= 10; // 10em } return autoSize.ConvertTo(aWM, wm); } nscoord nsProgressFrame::GetMinISize(nsRenderingContext *aRenderingContext) { RefPtr<nsFontMetrics> fontMet = nsLayoutUtils::GetFontMetricsForFrame(this, 1.0f); nscoord minISize = fontMet->Font().size; // 1em if (ResolvedOrientationIsVertical() == GetWritingMode().IsVertical()) { // The orientation is inline minISize *= 10; // 10em } return minISize; } nscoord nsProgressFrame::GetPrefISize(nsRenderingContext *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()->mAppearance == NS_THEME_PROGRESSBAR && !PresContext()->HasAuthorSpecifiedRules(this, NS_AUTHOR_SPECIFIED_BORDER | NS_AUTHOR_SPECIFIED_BACKGROUND) && barFrame && barFrame->StyleDisplay()->mAppearance == NS_THEME_PROGRESSCHUNK && !PresContext()->HasAuthorSpecifiedRules(barFrame, NS_AUTHOR_SPECIFIED_BORDER | NS_AUTHOR_SPECIFIED_BACKGROUND); } Element* nsProgressFrame::GetPseudoElement(CSSPseudoElementType aType) { if (aType == CSSPseudoElementType::mozProgressBar) { return mBarDiv; } return nsContainerFrame::GetPseudoElement(aType); }