507 lines
18 KiB
C++
507 lines
18 KiB
C++
/* -*- 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 "nsHTMLButtonControlFrame.h"
|
|
|
|
#include "nsContainerFrame.h"
|
|
#include "nsIFormControlFrame.h"
|
|
#include "nsIFrameInlines.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "nsButtonFrameRenderer.h"
|
|
#include "nsCSSAnonBoxes.h"
|
|
#include "nsFormControlFrame.h"
|
|
#include "nsNameSpaceManager.h"
|
|
#include "nsDisplayList.h"
|
|
#include <algorithm>
|
|
|
|
using namespace mozilla;
|
|
|
|
nsContainerFrame*
|
|
NS_NewHTMLButtonControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsHTMLButtonControlFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLButtonControlFrame)
|
|
|
|
nsHTMLButtonControlFrame::nsHTMLButtonControlFrame(nsStyleContext* aContext)
|
|
: nsContainerFrame(aContext)
|
|
{
|
|
}
|
|
|
|
nsHTMLButtonControlFrame::~nsHTMLButtonControlFrame()
|
|
{
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
|
|
{
|
|
nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
|
|
nsContainerFrame::DestroyFrom(aDestructRoot);
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::Init(nsIContent* aContent,
|
|
nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
|
|
mRenderer.SetFrame(this, PresContext());
|
|
}
|
|
|
|
NS_QUERYFRAME_HEAD(nsHTMLButtonControlFrame)
|
|
NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
|
|
|
|
#ifdef ACCESSIBILITY
|
|
a11y::AccType
|
|
nsHTMLButtonControlFrame::AccessibleType()
|
|
{
|
|
return a11y::eHTMLButtonType;
|
|
}
|
|
#endif
|
|
|
|
nsIAtom*
|
|
nsHTMLButtonControlFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::HTMLButtonControlFrame;
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::SetFocus(bool aOn, bool aRepaint)
|
|
{
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLButtonControlFrame::HandleEvent(nsPresContext* aPresContext,
|
|
WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
// if disabled do nothing
|
|
if (mRenderer.isDisabled()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// mouse clicks are handled by content
|
|
// we don't want our children to get any events. So just pass it to frame.
|
|
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
bool
|
|
nsHTMLButtonControlFrame::ShouldClipPaintingToBorderBox()
|
|
{
|
|
return IsInput() || StyleDisplay()->mOverflowX != NS_STYLE_OVERFLOW_VISIBLE;
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
// Clip to our border area for event hit testing.
|
|
Maybe<DisplayListClipState::AutoSaveRestore> eventClipState;
|
|
const bool isForEventDelivery = aBuilder->IsForEventDelivery();
|
|
if (isForEventDelivery) {
|
|
eventClipState.emplace(aBuilder);
|
|
nsRect rect(aBuilder->ToReferenceFrame(this), GetSize());
|
|
nscoord radii[8];
|
|
bool hasRadii = GetBorderRadii(radii);
|
|
eventClipState->ClipContainingBlockDescendants(rect, hasRadii ? radii : nullptr);
|
|
}
|
|
|
|
nsDisplayList onTop;
|
|
if (IsVisibleForPainting(aBuilder)) {
|
|
mRenderer.DisplayButton(aBuilder, aLists.BorderBackground(), &onTop);
|
|
}
|
|
|
|
nsDisplayListCollection set(aBuilder);
|
|
|
|
// Do not allow the child subtree to receive events.
|
|
if (!isForEventDelivery) {
|
|
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
|
|
|
|
if (ShouldClipPaintingToBorderBox()) {
|
|
nsMargin border = StyleBorder()->GetComputedBorder();
|
|
nsRect rect(aBuilder->ToReferenceFrame(this), GetSize());
|
|
rect.Deflate(border);
|
|
nscoord radii[8];
|
|
bool hasRadii = GetPaddingBoxBorderRadii(radii);
|
|
clipState.ClipContainingBlockDescendants(rect, hasRadii ? radii : nullptr);
|
|
}
|
|
|
|
BuildDisplayListForChild(aBuilder, mFrames.FirstChild(), set,
|
|
DISPLAY_CHILD_FORCE_PSEUDO_STACKING_CONTEXT);
|
|
// That should put the display items in set.Content()
|
|
}
|
|
|
|
// Put the foreground outline and focus rects on top of the children
|
|
set.Content()->AppendToTop(&onTop);
|
|
set.MoveTo(aLists);
|
|
|
|
DisplayOutline(aBuilder, aLists);
|
|
|
|
// to draw border when selected in editor
|
|
DisplaySelectionOverlay(aBuilder, aLists.Content());
|
|
}
|
|
|
|
nscoord
|
|
nsHTMLButtonControlFrame::GetMinISize(nsRenderingContext* aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_MIN_WIDTH(this, result);
|
|
|
|
nsIFrame* kid = mFrames.FirstChild();
|
|
result = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
|
|
kid,
|
|
nsLayoutUtils::MIN_ISIZE);
|
|
|
|
result += GetWritingMode().IsVertical()
|
|
? mRenderer.GetAddedButtonBorderAndPadding().TopBottom()
|
|
: mRenderer.GetAddedButtonBorderAndPadding().LeftRight();
|
|
|
|
return result;
|
|
}
|
|
|
|
nscoord
|
|
nsHTMLButtonControlFrame::GetPrefISize(nsRenderingContext* aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_PREF_WIDTH(this, result);
|
|
|
|
nsIFrame* kid = mFrames.FirstChild();
|
|
result = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
|
|
kid,
|
|
nsLayoutUtils::PREF_ISIZE);
|
|
|
|
result += GetWritingMode().IsVertical()
|
|
? mRenderer.GetAddedButtonBorderAndPadding().TopBottom()
|
|
: mRenderer.GetAddedButtonBorderAndPadding().LeftRight();
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
MarkInReflow();
|
|
DO_GLOBAL_REFLOW_COUNT("nsHTMLButtonControlFrame");
|
|
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
|
|
|
|
NS_PRECONDITION(aReflowInput.ComputedISize() != NS_INTRINSICSIZE,
|
|
"Should have real computed inline-size by now");
|
|
|
|
if (mState & NS_FRAME_FIRST_REFLOW) {
|
|
nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), true);
|
|
}
|
|
|
|
// Reflow the child
|
|
nsIFrame* firstKid = mFrames.FirstChild();
|
|
|
|
MOZ_ASSERT(firstKid, "Button should have a child frame for its contents");
|
|
MOZ_ASSERT(!firstKid->GetNextSibling(),
|
|
"Button should have exactly one child frame");
|
|
MOZ_ASSERT(firstKid->StyleContext()->GetPseudo() ==
|
|
nsCSSAnonBoxes::buttonContent,
|
|
"Button's child frame has unexpected pseudo type!");
|
|
|
|
// XXXbz Eventually we may want to check-and-bail if
|
|
// !aReflowInput.ShouldReflowAllKids() &&
|
|
// !NS_SUBTREE_DIRTY(firstKid).
|
|
// We'd need to cache our ascent for that, of course.
|
|
|
|
// Reflow the contents of the button.
|
|
// (This populates our aDesiredSize, too.)
|
|
ReflowButtonContents(aPresContext, aDesiredSize,
|
|
aReflowInput, firstKid);
|
|
|
|
if (!ShouldClipPaintingToBorderBox()) {
|
|
ConsiderChildOverflow(aDesiredSize.mOverflowAreas, firstKid);
|
|
}
|
|
// else, we ignore child overflow -- anything that overflows beyond our
|
|
// own border-box will get clipped when painting.
|
|
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize,
|
|
aReflowInput, aStatus);
|
|
|
|
// We're always complete and we don't support overflow containers
|
|
// so we shouldn't have a next-in-flow ever.
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
MOZ_ASSERT(!GetNextInFlow());
|
|
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
|
|
}
|
|
|
|
// Helper-function that lets us clone the button's reflow state, but with its
|
|
// ComputedWidth and ComputedHeight reduced by the amount of renderer-specific
|
|
// focus border and padding that we're using. (This lets us provide a more
|
|
// appropriate content-box size for descendents' percent sizes to resolve
|
|
// against.)
|
|
static ReflowInput
|
|
CloneReflowInputWithReducedContentBox(
|
|
const ReflowInput& aButtonReflowInput,
|
|
const nsMargin& aFocusPadding)
|
|
{
|
|
nscoord adjustedWidth =
|
|
aButtonReflowInput.ComputedWidth() - aFocusPadding.LeftRight();
|
|
adjustedWidth = std::max(0, adjustedWidth);
|
|
|
|
// (Only adjust height if it's an actual length.)
|
|
nscoord adjustedHeight = aButtonReflowInput.ComputedHeight();
|
|
if (adjustedHeight != NS_INTRINSICSIZE) {
|
|
adjustedHeight -= aFocusPadding.TopBottom();
|
|
adjustedHeight = std::max(0, adjustedHeight);
|
|
}
|
|
|
|
ReflowInput clone(aButtonReflowInput);
|
|
clone.SetComputedWidth(adjustedWidth);
|
|
clone.SetComputedHeight(adjustedHeight);
|
|
|
|
return clone;
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::ReflowButtonContents(nsPresContext* aPresContext,
|
|
ReflowOutput& aButtonDesiredSize,
|
|
const ReflowInput& aButtonReflowInput,
|
|
nsIFrame* aFirstKid)
|
|
{
|
|
WritingMode wm = GetWritingMode();
|
|
LogicalSize availSize = aButtonReflowInput.ComputedSize(wm);
|
|
availSize.BSize(wm) = NS_INTRINSICSIZE;
|
|
|
|
// Buttons have some bonus renderer-determined border/padding,
|
|
// which occupies part of the button's content-box area:
|
|
LogicalMargin focusPadding =
|
|
LogicalMargin(wm, mRenderer.GetAddedButtonBorderAndPadding());
|
|
|
|
// See whether out availSize's inline-size is big enough. If it's
|
|
// smaller than our intrinsic min iSize, that means that the kid
|
|
// wouldn't really fit. In that case, we overflow into our internal
|
|
// focuspadding (which other browsers don't have) so that there's a
|
|
// little more space for it.
|
|
// Note that GetMinISize includes the focusPadding.
|
|
nscoord IOverflow = GetMinISize(aButtonReflowInput.mRenderingContext) -
|
|
aButtonReflowInput.ComputedISize();
|
|
nscoord IFocusPadding = focusPadding.IStartEnd(wm);
|
|
nscoord focusPaddingReduction = std::min(IFocusPadding,
|
|
std::max(IOverflow, 0));
|
|
if (focusPaddingReduction > 0) {
|
|
nscoord startReduction = focusPadding.IStart(wm);
|
|
if (focusPaddingReduction != IFocusPadding) {
|
|
startReduction = NSToCoordRound(startReduction *
|
|
(float(focusPaddingReduction) /
|
|
float(IFocusPadding)));
|
|
}
|
|
focusPadding.IStart(wm) -= startReduction;
|
|
focusPadding.IEnd(wm) -= focusPaddingReduction - startReduction;
|
|
}
|
|
|
|
// shorthand for a value we need to use in a bunch of places
|
|
const LogicalMargin& clbp = aButtonReflowInput.ComputedLogicalBorderPadding();
|
|
|
|
// Indent the child inside us by the focus border. We must do this separate
|
|
// from the regular border.
|
|
availSize.ISize(wm) -= focusPadding.IStartEnd(wm);
|
|
|
|
LogicalPoint childPos(wm);
|
|
childPos.I(wm) = focusPadding.IStart(wm) + clbp.IStart(wm);
|
|
availSize.ISize(wm) = std::max(availSize.ISize(wm), 0);
|
|
|
|
// Give child a clone of the button's reflow state, with height/width reduced
|
|
// by focusPadding, so that descendants with height:100% don't protrude.
|
|
ReflowInput adjustedButtonReflowInput =
|
|
CloneReflowInputWithReducedContentBox(aButtonReflowInput,
|
|
focusPadding.GetPhysicalMargin(wm));
|
|
|
|
ReflowInput contentsReflowInput(aPresContext,
|
|
adjustedButtonReflowInput,
|
|
aFirstKid, availSize);
|
|
|
|
nsReflowStatus contentsReflowStatus;
|
|
ReflowOutput contentsDesiredSize(aButtonReflowInput);
|
|
childPos.B(wm) = 0; // This will be set properly later, after reflowing the
|
|
// child to determine its size.
|
|
|
|
// We just pass a dummy containerSize here, as the child will be
|
|
// repositioned later by FinishReflowChild.
|
|
nsSize dummyContainerSize;
|
|
ReflowChild(aFirstKid, aPresContext,
|
|
contentsDesiredSize, contentsReflowInput,
|
|
wm, childPos, dummyContainerSize, 0, contentsReflowStatus);
|
|
MOZ_ASSERT(NS_FRAME_IS_COMPLETE(contentsReflowStatus),
|
|
"We gave button-contents frame unconstrained available height, "
|
|
"so it should be complete");
|
|
|
|
// Compute the button's content-box size:
|
|
LogicalSize buttonContentBox(wm);
|
|
if (aButtonReflowInput.ComputedBSize() != NS_INTRINSICSIZE) {
|
|
// Button has a fixed block-size -- that's its content-box bSize.
|
|
buttonContentBox.BSize(wm) = aButtonReflowInput.ComputedBSize();
|
|
} else {
|
|
// Button is intrinsically sized -- it should shrinkwrap the
|
|
// button-contents' bSize, plus any focus-padding space:
|
|
buttonContentBox.BSize(wm) =
|
|
contentsDesiredSize.BSize(wm) + focusPadding.BStartEnd(wm);
|
|
|
|
// Make sure we obey min/max-bSize in the case when we're doing intrinsic
|
|
// sizing (we get it for free when we have a non-intrinsic
|
|
// aButtonReflowInput.ComputedBSize()). Note that we do this before
|
|
// adjusting for borderpadding, since mComputedMaxBSize and
|
|
// mComputedMinBSize are content bSizes.
|
|
buttonContentBox.BSize(wm) =
|
|
NS_CSS_MINMAX(buttonContentBox.BSize(wm),
|
|
aButtonReflowInput.ComputedMinBSize(),
|
|
aButtonReflowInput.ComputedMaxBSize());
|
|
}
|
|
if (aButtonReflowInput.ComputedISize() != NS_INTRINSICSIZE) {
|
|
buttonContentBox.ISize(wm) = aButtonReflowInput.ComputedISize();
|
|
} else {
|
|
buttonContentBox.ISize(wm) =
|
|
contentsDesiredSize.ISize(wm) + focusPadding.IStartEnd(wm);
|
|
buttonContentBox.ISize(wm) =
|
|
NS_CSS_MINMAX(buttonContentBox.ISize(wm),
|
|
aButtonReflowInput.ComputedMinISize(),
|
|
aButtonReflowInput.ComputedMaxISize());
|
|
}
|
|
|
|
// Center child in the block-direction in the button
|
|
// (technically, inside of the button's focus-padding area)
|
|
nscoord extraSpace =
|
|
buttonContentBox.BSize(wm) - focusPadding.BStartEnd(wm) -
|
|
contentsDesiredSize.BSize(wm);
|
|
|
|
childPos.B(wm) = std::max(0, extraSpace / 2);
|
|
|
|
// Adjust childPos.B() to be in terms of the button's frame-rect, instead of
|
|
// its focus-padding rect:
|
|
childPos.B(wm) += focusPadding.BStart(wm) + clbp.BStart(wm);
|
|
|
|
nsSize containerSize =
|
|
(buttonContentBox + clbp.Size(wm)).GetPhysicalSize(wm);
|
|
|
|
// Place the child
|
|
FinishReflowChild(aFirstKid, aPresContext,
|
|
contentsDesiredSize, &contentsReflowInput,
|
|
wm, childPos, containerSize, 0);
|
|
|
|
// Make sure we have a useful 'ascent' value for the child
|
|
if (contentsDesiredSize.BlockStartAscent() ==
|
|
ReflowOutput::ASK_FOR_BASELINE) {
|
|
WritingMode wm = aButtonReflowInput.GetWritingMode();
|
|
contentsDesiredSize.SetBlockStartAscent(aFirstKid->GetLogicalBaseline(wm));
|
|
}
|
|
|
|
// OK, we're done with the child frame.
|
|
// Use what we learned to populate the button frame's reflow metrics.
|
|
// * Button's height & width are content-box size + border-box contribution:
|
|
aButtonDesiredSize.SetSize(wm,
|
|
LogicalSize(wm, aButtonReflowInput.ComputedISize() + clbp.IStartEnd(wm),
|
|
buttonContentBox.BSize(wm) + clbp.BStartEnd(wm)));
|
|
|
|
// * Button's ascent is its child's ascent, plus the child's block-offset
|
|
// within our frame... unless it's orthogonal, in which case we'll use the
|
|
// contents inline-size as an approximation for now.
|
|
// XXX is there a better strategy? should we include border-padding?
|
|
if (aButtonDesiredSize.GetWritingMode().IsOrthogonalTo(wm)) {
|
|
aButtonDesiredSize.SetBlockStartAscent(contentsDesiredSize.ISize(wm));
|
|
} else {
|
|
aButtonDesiredSize.SetBlockStartAscent(contentsDesiredSize.BlockStartAscent() +
|
|
childPos.B(wm));
|
|
}
|
|
|
|
aButtonDesiredSize.SetOverflowAreasToDesiredBounds();
|
|
}
|
|
|
|
bool
|
|
nsHTMLButtonControlFrame::GetVerticalAlignBaseline(mozilla::WritingMode aWM,
|
|
nscoord* aBaseline) const
|
|
{
|
|
nsIFrame* inner = mFrames.FirstChild();
|
|
if (MOZ_UNLIKELY(inner->GetWritingMode().IsOrthogonalTo(aWM))) {
|
|
return false;
|
|
}
|
|
if (!inner->GetVerticalAlignBaseline(aWM, aBaseline)) {
|
|
// <input type=color> has an empty block frame as inner frame
|
|
*aBaseline = inner->
|
|
SynthesizeBaselineBOffsetFromBorderBox(aWM, BaselineSharingGroup::eFirst);
|
|
}
|
|
nscoord innerBStart = inner->BStart(aWM, GetSize());
|
|
*aBaseline += innerBStart;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsHTMLButtonControlFrame::GetNaturalBaselineBOffset(mozilla::WritingMode aWM,
|
|
BaselineSharingGroup aBaselineGroup,
|
|
nscoord* aBaseline) const
|
|
{
|
|
nsIFrame* inner = mFrames.FirstChild();
|
|
if (MOZ_UNLIKELY(inner->GetWritingMode().IsOrthogonalTo(aWM))) {
|
|
return false;
|
|
}
|
|
if (!inner->GetNaturalBaselineBOffset(aWM, aBaselineGroup, aBaseline)) {
|
|
// <input type=color> has an empty block frame as inner frame
|
|
*aBaseline = inner->
|
|
SynthesizeBaselineBOffsetFromBorderBox(aWM, aBaselineGroup);
|
|
}
|
|
nscoord innerBStart = inner->BStart(aWM, GetSize());
|
|
if (aBaselineGroup == BaselineSharingGroup::eFirst) {
|
|
*aBaseline += innerBStart;
|
|
} else {
|
|
*aBaseline += BSize(aWM) - (innerBStart + inner->BSize(aWM));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsresult nsHTMLButtonControlFrame::SetFormProperty(nsIAtom* aName, const nsAString& aValue)
|
|
{
|
|
if (nsGkAtoms::value == aName) {
|
|
return mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::value,
|
|
aValue, true);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsStyleContext*
|
|
nsHTMLButtonControlFrame::GetAdditionalStyleContext(int32_t aIndex) const
|
|
{
|
|
return mRenderer.GetStyleContext(aIndex);
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::SetAdditionalStyleContext(int32_t aIndex,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
mRenderer.SetStyleContext(aIndex, aStyleContext);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
nsHTMLButtonControlFrame::AppendFrames(ChildListID aListID,
|
|
nsFrameList& aFrameList)
|
|
{
|
|
MOZ_CRASH("unsupported operation");
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::InsertFrames(ChildListID aListID,
|
|
nsIFrame* aPrevFrame,
|
|
nsFrameList& aFrameList)
|
|
{
|
|
MOZ_CRASH("unsupported operation");
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonControlFrame::RemoveFrame(ChildListID aListID,
|
|
nsIFrame* aOldFrame)
|
|
{
|
|
MOZ_CRASH("unsupported operation");
|
|
}
|
|
#endif
|