summaryrefslogtreecommitdiffstats
path: root/layout/xul/nsSliderFrame.h
diff options
context:
space:
mode:
Diffstat (limited to 'layout/xul/nsSliderFrame.h')
-rw-r--r--layout/xul/nsSliderFrame.h206
1 files changed, 206 insertions, 0 deletions
diff --git a/layout/xul/nsSliderFrame.h b/layout/xul/nsSliderFrame.h
new file mode 100644
index 000000000..832065a21
--- /dev/null
+++ b/layout/xul/nsSliderFrame.h
@@ -0,0 +1,206 @@
+/* -*- 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/. */
+
+#ifndef nsSliderFrame_h__
+#define nsSliderFrame_h__
+
+#include "mozilla/Attributes.h"
+#include "nsRepeatService.h"
+#include "nsBoxFrame.h"
+#include "nsIAtom.h"
+#include "nsCOMPtr.h"
+#include "nsITimer.h"
+#include "nsIDOMEventListener.h"
+
+class nsITimer;
+class nsSliderFrame;
+
+nsIFrame* NS_NewSliderFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+class nsSliderMediator final : public nsIDOMEventListener
+{
+public:
+
+ NS_DECL_ISUPPORTS
+
+ nsSliderFrame* mSlider;
+
+ explicit nsSliderMediator(nsSliderFrame* aSlider) { mSlider = aSlider; }
+
+ virtual void SetSlider(nsSliderFrame* aSlider) { mSlider = aSlider; }
+
+ NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) override;
+
+protected:
+ virtual ~nsSliderMediator() {}
+};
+
+class nsSliderFrame : public nsBoxFrame
+{
+public:
+ NS_DECL_FRAMEARENA_HELPERS
+ NS_DECL_QUERYFRAME_TARGET(nsSliderFrame)
+ NS_DECL_QUERYFRAME
+
+ friend class nsSliderMediator;
+
+ explicit nsSliderFrame(nsStyleContext* aContext);
+ virtual ~nsSliderFrame();
+
+#ifdef DEBUG_FRAME_DUMP
+ virtual nsresult GetFrameName(nsAString& aResult) const override {
+ return MakeFrameName(NS_LITERAL_STRING("SliderFrame"), aResult);
+ }
+#endif
+
+ virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
+ virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
+ virtual nsSize GetXULMaxSize(nsBoxLayoutState& aBoxLayoutState) override;
+ NS_IMETHOD DoXULLayout(nsBoxLayoutState& aBoxLayoutState) override;
+
+ // nsIFrame overrides
+ virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
+
+ virtual void BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists) override;
+
+ virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists) override;
+
+ virtual nsresult AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType) override;
+
+ virtual void Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* asPrevInFlow) override;
+
+
+ virtual nsresult HandleEvent(nsPresContext* aPresContext,
+ mozilla::WidgetGUIEvent* aEvent,
+ nsEventStatus* aEventStatus) override;
+
+ virtual nsIAtom* GetType() const override;
+
+ // nsContainerFrame overrides
+ virtual void SetInitialChildList(ChildListID aListID,
+ nsFrameList& aChildList) override;
+ virtual void AppendFrames(ChildListID aListID,
+ nsFrameList& aFrameList) override;
+ virtual void InsertFrames(ChildListID aListID,
+ nsIFrame* aPrevFrame,
+ nsFrameList& aFrameList) override;
+ virtual void RemoveFrame(ChildListID aListID,
+ nsIFrame* aOldFrame) override;
+
+ nsresult StartDrag(nsIDOMEvent* aEvent);
+ nsresult StopDrag();
+
+ bool StartAPZDrag();
+
+ static int32_t GetCurrentPosition(nsIContent* content);
+ static int32_t GetMinPosition(nsIContent* content);
+ static int32_t GetMaxPosition(nsIContent* content);
+ static int32_t GetIncrement(nsIContent* content);
+ static int32_t GetPageIncrement(nsIContent* content);
+ static int32_t GetIntegerAttribute(nsIContent* content, nsIAtom* atom, int32_t defaultValue);
+ void EnsureOrient();
+
+ NS_IMETHOD HandlePress(nsPresContext* aPresContext,
+ mozilla::WidgetGUIEvent* aEvent,
+ nsEventStatus* aEventStatus) override;
+
+ NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
+ mozilla::WidgetGUIEvent* aEvent,
+ nsEventStatus* aEventStatus,
+ bool aControlHeld) override
+ {
+ return NS_OK;
+ }
+
+ NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
+ mozilla::WidgetGUIEvent* aEvent,
+ nsEventStatus* aEventStatus) override
+ {
+ return NS_OK;
+ }
+
+ NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
+ mozilla::WidgetGUIEvent* aEvent,
+ nsEventStatus* aEventStatus) override;
+
+ // Return the ratio the scrollbar thumb should move in proportion to the
+ // scrolled frame.
+ float GetThumbRatio() const;
+
+private:
+
+ bool GetScrollToClick();
+ nsIFrame* GetScrollbar();
+ bool ShouldScrollForEvent(mozilla::WidgetGUIEvent* aEvent);
+ bool ShouldScrollToClickForEvent(mozilla::WidgetGUIEvent* aEvent);
+ bool IsEventOverThumb(mozilla::WidgetGUIEvent* aEvent);
+
+ void PageUpDown(nscoord change);
+ void SetCurrentThumbPosition(nsIContent* aScrollbar, nscoord aNewPos, bool aIsSmooth,
+ bool aMaySnap);
+ void SetCurrentPosition(nsIContent* aScrollbar, int32_t aNewPos, bool aIsSmooth);
+ void SetCurrentPositionInternal(nsIContent* aScrollbar, int32_t pos,
+ bool aIsSmooth);
+ void CurrentPositionChanged();
+
+ void DragThumb(bool aGrabMouseEvents);
+ void AddListener();
+ void RemoveListener();
+ bool isDraggingThumb();
+
+ void StartRepeat() {
+ nsRepeatService::GetInstance()->Start(Notify, this);
+ }
+ void StopRepeat() {
+ nsRepeatService::GetInstance()->Stop(Notify, this);
+ }
+ void Notify();
+ static void Notify(void* aData) {
+ (static_cast<nsSliderFrame*>(aData))->Notify();
+ }
+ void PageScroll(nscoord aChange);
+
+ nsPoint mDestinationPoint;
+ RefPtr<nsSliderMediator> mMediator;
+
+ float mRatio;
+
+ nscoord mDragStart;
+ nscoord mThumbStart;
+
+ int32_t mCurPos;
+
+ nscoord mChange;
+
+ bool mDragFinished;
+
+ // true if an attribute change has been caused by the user manipulating the
+ // slider. This allows notifications to tell how a slider's current position
+ // was changed.
+ bool mUserChanged;
+
+ // true if we've handed off the scrolling to APZ. This means that we should
+ // ignore scrolling events as the position will be updated by APZ. If we were
+ // to process these events then the scroll position update would conflict
+ // causing the scroll position to jump.
+ bool mScrollingWithAPZ;
+
+ // true if displayport suppression is active, for more performant
+ // scrollbar-dragging behaviour.
+ bool mSuppressionActive;
+
+ static bool gMiddlePref;
+ static int32_t gSnapMultiplier;
+}; // class nsSliderFrame
+
+#endif