mirror of
https://github.com/classilla/tenfourfox.git
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203 lines
6.6 KiB
C++
203 lines
6.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef nsSliderFrame_h__
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#define nsSliderFrame_h__
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#include "mozilla/Attributes.h"
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#include "nsRepeatService.h"
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#include "nsBoxFrame.h"
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#include "nsIAtom.h"
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#include "nsCOMPtr.h"
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#include "nsITimer.h"
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#include "nsIDOMEventListener.h"
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class nsITimer;
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class nsSliderFrame;
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nsIFrame* NS_NewSliderFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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class nsSliderMediator final : public nsIDOMEventListener
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{
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public:
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NS_DECL_ISUPPORTS
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nsSliderFrame* mSlider;
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explicit nsSliderMediator(nsSliderFrame* aSlider) { mSlider = aSlider; }
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virtual void SetSlider(nsSliderFrame* aSlider) { mSlider = aSlider; }
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NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) override;
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protected:
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virtual ~nsSliderMediator() {}
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};
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class nsSliderFrame : public nsBoxFrame
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{
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public:
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NS_DECL_FRAMEARENA_HELPERS
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NS_DECL_QUERYFRAME_TARGET(nsSliderFrame)
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NS_DECL_QUERYFRAME
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friend class nsSliderMediator;
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explicit nsSliderFrame(nsStyleContext* aContext);
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virtual ~nsSliderFrame();
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override {
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return MakeFrameName(NS_LITERAL_STRING("SliderFrame"), aResult);
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}
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#endif
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virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) override;
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NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState) override;
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// nsIFrame overrides
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virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
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virtual void BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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virtual nsresult AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* asPrevInFlow) override;
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virtual nsresult HandleEvent(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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virtual nsIAtom* GetType() const override;
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// nsContainerFrame overrides
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virtual void SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList) override;
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virtual void AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList) override;
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virtual void InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList) override;
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virtual void RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame) override;
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nsresult StartDrag(nsIDOMEvent* aEvent);
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nsresult StopDrag();
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bool StartAPZDrag(mozilla::WidgetGUIEvent* aEvent);
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static int32_t GetCurrentPosition(nsIContent* content);
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static int32_t GetMinPosition(nsIContent* content);
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static int32_t GetMaxPosition(nsIContent* content);
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static int32_t GetIncrement(nsIContent* content);
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static int32_t GetPageIncrement(nsIContent* content);
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static int32_t GetIntegerAttribute(nsIContent* content, nsIAtom* atom, int32_t defaultValue);
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void EnsureOrient();
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NS_IMETHOD HandlePress(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus,
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bool aControlHeld) override
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{
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return NS_OK;
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}
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NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override
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{
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return NS_OK;
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}
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NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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// Return the ratio the scrollbar thumb should move in proportion to the
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// scrolled frame.
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float GetThumbRatio() const;
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private:
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bool GetScrollToClick();
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nsIFrame* GetScrollbar();
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bool ShouldScrollForEvent(mozilla::WidgetGUIEvent* aEvent);
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bool ShouldScrollToClickForEvent(mozilla::WidgetGUIEvent* aEvent);
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bool IsEventOverThumb(mozilla::WidgetGUIEvent* aEvent);
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void PageUpDown(nscoord change);
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void SetCurrentThumbPosition(nsIContent* aScrollbar, nscoord aNewPos, bool aIsSmooth,
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bool aMaySnap);
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void SetCurrentPosition(nsIContent* aScrollbar, int32_t aNewPos, bool aIsSmooth);
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void SetCurrentPositionInternal(nsIContent* aScrollbar, int32_t pos,
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bool aIsSmooth);
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void CurrentPositionChanged();
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void DragThumb(bool aGrabMouseEvents);
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void AddListener();
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void RemoveListener();
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bool isDraggingThumb();
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void StartRepeat() {
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nsRepeatService::GetInstance()->Start(Notify, this);
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}
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void StopRepeat() {
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nsRepeatService::GetInstance()->Stop(Notify, this);
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}
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void Notify();
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static void Notify(void* aData) {
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(static_cast<nsSliderFrame*>(aData))->Notify();
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}
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void PageScroll(nscoord aChange);
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nsPoint mDestinationPoint;
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RefPtr<nsSliderMediator> mMediator;
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float mRatio;
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nscoord mDragStart;
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nscoord mThumbStart;
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int32_t mCurPos;
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nscoord mChange;
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bool mDragFinished;
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// true if an attribute change has been caused by the user manipulating the
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// slider. This allows notifications to tell how a slider's current position
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// was changed.
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bool mUserChanged;
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// true if we've handed off the scrolling to APZ. This means that we should
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// ignore scrolling events as the position will be updated by APZ. If we were
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// to process these events then the scroll position update would conflict
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// causing the scroll position to jump.
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bool mScrollingWithAPZ;
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static bool gMiddlePref;
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static int32_t gSnapMultiplier;
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}; // class nsSliderFrame
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#endif
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