summaryrefslogtreecommitdiffstats
path: root/layout/forms/nsRangeFrame.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /layout/forms/nsRangeFrame.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/forms/nsRangeFrame.h')
-rw-r--r--layout/forms/nsRangeFrame.h213
1 files changed, 213 insertions, 0 deletions
diff --git a/layout/forms/nsRangeFrame.h b/layout/forms/nsRangeFrame.h
new file mode 100644
index 0000000000..4d2073aa50
--- /dev/null
+++ b/layout/forms/nsRangeFrame.h
@@ -0,0 +1,213 @@
+/* -*- 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/. */
+
+#ifndef nsRangeFrame_h___
+#define nsRangeFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Decimal.h"
+#include "mozilla/EventForwards.h"
+#include "nsContainerFrame.h"
+#include "nsIAnonymousContentCreator.h"
+#include "nsIDOMEventListener.h"
+#include "nsCOMPtr.h"
+#include "nsTArray.h"
+
+class nsDisplayRangeFocusRing;
+
+namespace mozilla {
+class ListMutationObserver;
+class PresShell;
+namespace dom {
+class Event;
+class HTMLInputElement;
+} // namespace dom
+} // namespace mozilla
+
+class nsRangeFrame final : public nsContainerFrame,
+ public nsIAnonymousContentCreator {
+ friend nsIFrame* NS_NewRangeFrame(mozilla::PresShell* aPresShell,
+ ComputedStyle* aStyle);
+
+ void Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+
+ friend class nsDisplayRangeFocusRing;
+
+ explicit nsRangeFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
+ virtual ~nsRangeFrame();
+
+ typedef mozilla::PseudoStyleType PseudoStyleType;
+ typedef mozilla::dom::Element Element;
+
+ public:
+ NS_DECL_QUERYFRAME
+ NS_DECL_FRAMEARENA_HELPERS(nsRangeFrame)
+
+ // nsIFrame overrides
+ void Destroy(DestroyContext&) override;
+
+ void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsDisplayListSet& aLists) override;
+
+ virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus) override;
+
+#ifdef DEBUG_FRAME_DUMP
+ virtual nsresult GetFrameName(nsAString& aResult) const override {
+ return MakeFrameName(u"Range"_ns, aResult);
+ }
+#endif
+
+#ifdef ACCESSIBILITY
+ virtual mozilla::a11y::AccType AccessibleType() override;
+#endif
+
+ // nsIAnonymousContentCreator
+ virtual nsresult CreateAnonymousContent(
+ nsTArray<ContentInfo>& aElements) override;
+ virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
+ uint32_t aFilter) override;
+
+ virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+ int32_t aModType) override;
+
+ mozilla::LogicalSize ComputeAutoSize(
+ gfxContext* aRenderingContext, mozilla::WritingMode aWM,
+ const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
+ const mozilla::LogicalSize& aMargin,
+ const mozilla::LogicalSize& aBorderPadding,
+ const mozilla::StyleSizeOverrides& aSizeOverrides,
+ mozilla::ComputeSizeFlags aFlags) override;
+
+ virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
+ virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
+
+ /**
+ * Returns true if the slider's thumb moves horizontally, or else false if it
+ * moves vertically.
+ */
+ bool IsHorizontal() const;
+
+ /**
+ * Returns true if the slider is oriented along the inline axis.
+ */
+ bool IsInlineOriented() const {
+ return IsHorizontal() != GetWritingMode().IsVertical();
+ }
+
+ /**
+ * Returns true if the slider's thumb moves right-to-left for increasing
+ * values; only relevant when IsHorizontal() is true.
+ */
+ bool IsRightToLeft() const {
+ MOZ_ASSERT(IsHorizontal());
+ return GetWritingMode().IsPhysicalRTL();
+ }
+
+ /**
+ * Returns true if the range progresses upwards (for vertical ranges in
+ * horizontal writing mode, or for bidi-RTL in vertical mode). Only
+ * relevant when IsHorizontal() is false.
+ */
+ bool IsUpwards() const {
+ MOZ_ASSERT(!IsHorizontal());
+ mozilla::WritingMode wm = GetWritingMode();
+ return wm.GetBlockDir() == mozilla::WritingMode::eBlockTB ||
+ wm.GetInlineDir() == mozilla::WritingMode::eInlineBTT;
+ }
+
+ double GetMin() const;
+ double GetMax() const;
+ double GetValue() const;
+
+ /**
+ * Returns the input element's value as a fraction of the difference between
+ * the input's minimum and its maximum (i.e. returns 0.0 when the value is
+ * the same as the minimum, and returns 1.0 when the value is the same as the
+ * maximum).
+ */
+ double GetValueAsFractionOfRange();
+
+ /**
+ * Returns the given value as a fraction of the difference between the input's
+ * minimum and its maximum (i.e. returns 0.0 when the value is the same as the
+ * input's minimum, and returns 1.0 when the value is the same as the input's
+ * maximum).
+ */
+ double GetDoubleAsFractionOfRange(const mozilla::Decimal& value);
+
+ /**
+ * Returns whether the frame and its child should use the native style.
+ */
+ bool ShouldUseNativeStyle() const;
+
+ mozilla::Decimal GetValueAtEventPoint(mozilla::WidgetGUIEvent* aEvent);
+
+ /**
+ * Helper that's used when the value of the range changes to reposition the
+ * thumb, resize the range-progress element, and schedule a repaint. (This
+ * does not reflow, since the position and size of the thumb and
+ * range-progress element do not affect the position or size of any other
+ * frames.)
+ */
+ void UpdateForValueChange();
+
+ nsTArray<mozilla::Decimal> TickMarks();
+
+ /**
+ * Returns the given value's offset from the range's nearest list tick mark
+ * or NaN if there are no tick marks.
+ */
+ mozilla::Decimal NearestTickMark(const mozilla::Decimal& aValue);
+
+ protected:
+ mozilla::dom::HTMLInputElement& InputElement() const;
+
+ private:
+ // Return our preferred size in the cross-axis (the axis perpendicular
+ // to the direction of movement of the thumb).
+ nscoord AutoCrossSize(mozilla::Length aEm);
+
+ // Helper function which reflows the anonymous div frames.
+ void ReflowAnonymousContent(nsPresContext* aPresContext,
+ ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput);
+
+ void DoUpdateThumbPosition(nsIFrame* aThumbFrame, const nsSize& aRangeSize);
+
+ void DoUpdateRangeProgressFrame(nsIFrame* aProgressFrame,
+ const nsSize& aRangeSize);
+
+ /**
+ * The div used to show the ::-moz-range-track pseudo-element.
+ * @see nsRangeFrame::CreateAnonymousContent
+ */
+ nsCOMPtr<Element> mTrackDiv;
+
+ /**
+ * The div used to show the ::-moz-range-progress pseudo-element, which is
+ * used to (optionally) style the specific chunk of track leading up to the
+ * thumb's current position.
+ * @see nsRangeFrame::CreateAnonymousContent
+ */
+ nsCOMPtr<Element> mProgressDiv;
+
+ /**
+ * The div used to show the ::-moz-range-thumb pseudo-element.
+ * @see nsRangeFrame::CreateAnonymousContent
+ */
+ nsCOMPtr<Element> mThumbDiv;
+
+ /**
+ * This mutation observer is used to invalidate paint when the @list changes,
+ * when a @list exists.
+ */
+ RefPtr<mozilla::ListMutationObserver> mListMutationObserver;
+};
+
+#endif