142 lines
5.4 KiB
C++
142 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCheckboxRadioFrame.h"
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#include "nsLayoutUtils.h"
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#include "mozilla/PresShell.h"
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#include "nsIContent.h"
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using namespace mozilla;
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nsCheckboxRadioFrame* NS_NewCheckboxRadioFrame(PresShell* aPresShell,
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ComputedStyle* aStyle) {
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return new (aPresShell)
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nsCheckboxRadioFrame(aStyle, aPresShell->GetPresContext());
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}
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nsCheckboxRadioFrame::nsCheckboxRadioFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsAtomicContainerFrame(aStyle, aPresContext, kClassID) {}
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nsCheckboxRadioFrame::~nsCheckboxRadioFrame() = default;
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NS_IMPL_FRAMEARENA_HELPERS(nsCheckboxRadioFrame)
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NS_QUERYFRAME_HEAD(nsCheckboxRadioFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsAtomicContainerFrame)
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nscoord nsCheckboxRadioFrame::DefaultSize() {
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const CSSCoord size = StyleDisplay()->HasAppearance()
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? PresContext()->Theme()->GetCheckboxRadioPrefSize()
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: CSSCoord(13.0f);
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return CSSPixel::ToAppUnits(Style()->EffectiveZoom().Zoom(size));
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}
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/* virtual */
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void nsCheckboxRadioFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) {
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DO_GLOBAL_REFLOW_COUNT_DSP("nsCheckboxRadioFrame");
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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}
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nscoord nsCheckboxRadioFrame::IntrinsicISize(const IntrinsicSizeInput& aInput,
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IntrinsicISizeType aType) {
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return StyleDisplay()->HasAppearance() ? DefaultSize() : 0;
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}
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/* virtual */
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LogicalSize nsCheckboxRadioFrame::ComputeAutoSize(
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gfxContext* aRC, WritingMode aWM, const LogicalSize& aCBSize,
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nscoord aAvailableISize, const LogicalSize& aMargin,
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const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides,
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ComputeSizeFlags aFlags) {
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LogicalSize size(aWM, 0, 0);
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if (!StyleDisplay()->HasAppearance()) {
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return size;
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}
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return nsAtomicContainerFrame::ComputeAutoSize(
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aRC, aWM, aCBSize, aAvailableISize, aMargin, aBorderPadding,
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aSizeOverrides, aFlags);
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}
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Maybe<nscoord> nsCheckboxRadioFrame::GetNaturalBaselineBOffset(
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WritingMode aWM, BaselineSharingGroup aBaselineGroup,
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BaselineExportContext) const {
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NS_ASSERTION(!IsSubtreeDirty(), "frame must not be dirty");
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if (aBaselineGroup == BaselineSharingGroup::Last) {
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return Nothing{};
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}
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if (StyleDisplay()->IsBlockOutsideStyle()) {
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return Nothing{};
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}
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// For appearance:none we use a standard CSS baseline, i.e. synthesized from
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// our margin-box.
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if (!StyleDisplay()->HasAppearance()) {
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return Nothing{};
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}
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if (aWM.IsCentralBaseline()) {
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return Some(BSize(aWM) / 2);
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}
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// This is for compatibility with Chrome, Safari and Edge (Dec 2016).
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// Treat radio buttons and checkboxes as having an intrinsic baseline
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// at the block-end of the control (use the block-end content edge rather
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// than the margin edge).
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// For "inverted" lines (typically in writing-mode:vertical-lr), use the
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// block-start end instead.
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// See kCheckboxRadioBorderWidth in Theme.cpp
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CSSCoord border = PresContext()->Theme()->GetCheckboxRadioBorderWidth();
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auto bp = CSSPixel::ToAppUnits(Style()->EffectiveZoom().Zoom(border));
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return Some(aWM.IsLineInverted() ? std::min(bp, BSize(aWM))
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: std::max(0, BSize(aWM) - bp));
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}
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void nsCheckboxRadioFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) {
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MarkInReflow();
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DO_GLOBAL_REFLOW_COUNT("nsCheckboxRadioFrame");
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MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
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NS_FRAME_TRACE(
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NS_FRAME_TRACE_CALLS,
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("enter nsCheckboxRadioFrame::Reflow: aMaxSize=%d,%d",
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aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()));
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const auto wm = aReflowInput.GetWritingMode();
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MOZ_ASSERT(aReflowInput.ComputedLogicalBorderPadding(wm).IsAllZero());
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const auto contentBoxSize =
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aReflowInput.ComputedSizeWithBSizeFallback([&] { return DefaultSize(); });
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aDesiredSize.SetSize(wm, contentBoxSize);
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if (nsLayoutUtils::FontSizeInflationEnabled(aPresContext)) {
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const float inflation = nsLayoutUtils::FontSizeInflationFor(this);
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aDesiredSize.Width() *= inflation;
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aDesiredSize.Height() *= inflation;
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}
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NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
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("exit nsCheckboxRadioFrame::Reflow: size=%d,%d",
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aDesiredSize.Width(), aDesiredSize.Height()));
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aDesiredSize.SetOverflowAreasToDesiredBounds();
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FinishAndStoreOverflow(&aDesiredSize);
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}
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nsresult nsCheckboxRadioFrame::HandleEvent(nsPresContext* aPresContext,
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WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) {
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// Check for disabled content so that selection works properly (?).
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if (IsContentDisabled()) {
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return nsIFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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}
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return NS_OK;
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}
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