1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/* -*- 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 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"
class nsDisplayRangeFocusRing;
class nsRangeFrame : public nsContainerFrame,
public nsIAnonymousContentCreator
{
friend nsIFrame*
NS_NewRangeFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
friend class nsDisplayRangeFocusRing;
explicit nsRangeFrame(nsStyleContext* aContext);
virtual ~nsRangeFrame();
typedef mozilla::CSSPseudoElementType CSSPseudoElementType;
typedef mozilla::dom::Element Element;
public:
NS_DECL_QUERYFRAME_TARGET(nsRangeFrame)
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
// nsIFrame overrides
virtual void Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
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(NS_LITERAL_STRING("Range"), aResult);
}
#endif
virtual bool IsLeaf() const override { return true; }
#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,
nsIAtom* aAttribute,
int32_t aModType) override;
virtual mozilla::LogicalSize
ComputeAutoSize(nsRenderingContext* aRenderingContext,
mozilla::WritingMode aWM,
const mozilla::LogicalSize& aCBSize,
nscoord aAvailableISize,
const mozilla::LogicalSize& aMargin,
const mozilla::LogicalSize& aBorder,
const mozilla::LogicalSize& aPadding,
ComputeSizeFlags aFlags) override;
virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
virtual nsIAtom* GetType() const override;
virtual bool IsFrameOfType(uint32_t aFlags) const override
{
return nsContainerFrame::IsFrameOfType(aFlags &
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
}
nsStyleContext* GetAdditionalStyleContext(int32_t aIndex) const override;
void SetAdditionalStyleContext(int32_t aIndex,
nsStyleContext* aStyleContext) 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());
mozilla::WritingMode wm = GetWritingMode();
return wm.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR();
}
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 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();
virtual Element* GetPseudoElement(CSSPseudoElementType aType) override;
private:
nsresult MakeAnonymousDiv(Element** aResult,
CSSPseudoElementType aPseudoType,
nsTArray<ContentInfo>& aElements);
// 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;
/**
* Cached style context for -moz-focus-outer CSS pseudo-element style.
*/
RefPtr<nsStyleContext> mOuterFocusStyle;
class DummyTouchListener final : public nsIDOMEventListener
{
private:
~DummyTouchListener() {}
public:
NS_DECL_ISUPPORTS
NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) override
{
return NS_OK;
}
};
/**
* A no-op touch-listener used for APZ purposes (see nsRangeFrame::Init).
*/
RefPtr<DummyTouchListener> mDummyTouchListener;
};
#endif
|
