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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/* -*- 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/. */
#include "nsProgressFrame.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/HTMLProgressElement.h"
#include "nsIContent.h"
#include "nsLayoutUtils.h"
#include "nsPresContext.h"
#include "nsGkAtoms.h"
#include "nsNameSpaceManager.h"
#include "nsNodeInfoManager.h"
#include "nsContentCreatorFunctions.h"
#include "nsFontMetrics.h"
#include "nsCSSPseudoElements.h"
#include "nsStyleConsts.h"
#include <algorithm>
using namespace mozilla;
using namespace mozilla::dom;
nsIFrame* NS_NewProgressFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
return new (aPresShell) nsProgressFrame(aStyle, aPresShell->GetPresContext());
}
NS_IMPL_FRAMEARENA_HELPERS(nsProgressFrame)
nsProgressFrame::nsProgressFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsContainerFrame(aStyle, aPresContext, kClassID), mBarDiv(nullptr) {}
nsProgressFrame::~nsProgressFrame() = default;
void nsProgressFrame::DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) {
NS_ASSERTION(!GetPrevContinuation(),
"nsProgressFrame should not have continuations; if it does we "
"need to call RegUnregAccessKey only for the first.");
aPostDestroyData.AddAnonymousContent(mBarDiv.forget());
nsContainerFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
}
nsresult nsProgressFrame::CreateAnonymousContent(
nsTArray<ContentInfo>& aElements) {
// Create the progress bar div.
nsCOMPtr<Document> doc = mContent->GetComposedDoc();
mBarDiv = doc->CreateHTMLElement(nsGkAtoms::div);
// Associate ::-moz-progress-bar pseudo-element to the anonymous child.
mBarDiv->SetPseudoElementType(PseudoStyleType::mozProgressBar);
// XXX(Bug 1631371) Check if this should use a fallible operation as it
// pretended earlier, or change the return type to void.
aElements.AppendElement(mBarDiv);
return NS_OK;
}
void nsProgressFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
uint32_t aFilter) {
if (mBarDiv) {
aElements.AppendElement(mBarDiv);
}
}
NS_QUERYFRAME_HEAD(nsProgressFrame)
NS_QUERYFRAME_ENTRY(nsProgressFrame)
NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
void nsProgressFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) {
BuildDisplayListForInline(aBuilder, aLists);
}
void nsProgressFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsProgressFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
NS_ASSERTION(mBarDiv, "Progress bar div must exist!");
NS_ASSERTION(
PrincipalChildList().GetLength() == 1 &&
PrincipalChildList().FirstChild() == mBarDiv->GetPrimaryFrame(),
"unexpected child frames");
NS_ASSERTION(!GetPrevContinuation(),
"nsProgressFrame should not have continuations; if it does we "
"need to call RegUnregAccessKey only for the first.");
const auto wm = aReflowInput.GetWritingMode();
aDesiredSize.SetSize(wm, aReflowInput.ComputedSizeWithBorderPadding(wm));
aDesiredSize.SetOverflowAreasToDesiredBounds();
for (auto childFrame : PrincipalChildList()) {
ReflowChildFrame(childFrame, aPresContext, aReflowInput, aStatus);
ConsiderChildOverflow(aDesiredSize.mOverflowAreas, childFrame);
}
FinishAndStoreOverflow(&aDesiredSize);
aStatus.Reset(); // This type of frame can't be split.
}
void nsProgressFrame::ReflowChildFrame(nsIFrame* aChild,
nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
bool vertical = ResolvedOrientationIsVertical();
WritingMode wm = aChild->GetWritingMode();
LogicalSize availSize = aReflowInput.ComputedSize(wm);
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
ReflowInput reflowInput(aPresContext, aReflowInput, aChild, availSize);
nscoord size =
vertical ? aReflowInput.ComputedHeight() : aReflowInput.ComputedWidth();
nscoord xoffset = aReflowInput.ComputedPhysicalBorderPadding().left;
nscoord yoffset = aReflowInput.ComputedPhysicalBorderPadding().top;
double position = static_cast<HTMLProgressElement*>(GetContent())->Position();
// Force the bar's size to match the current progress.
// When indeterminate, the progress' size will be 100%.
if (position >= 0.0) {
size *= position;
}
if (!vertical && wm.IsPhysicalRTL()) {
xoffset += aReflowInput.ComputedWidth() - size;
}
// The bar size is fixed in these cases:
// - the progress position is determined: the bar size is fixed according
// to it's value.
// - the progress position is indeterminate and the bar appearance should be
// shown as native: the bar size is forced to 100%.
// Otherwise (when the progress is indeterminate and the bar appearance isn't
// native), the bar size isn't fixed and can be set by the author.
if (position != -1 || ShouldUseNativeStyle()) {
if (vertical) {
// We want the bar to begin at the bottom.
yoffset += aReflowInput.ComputedHeight() - size;
size -= reflowInput.ComputedPhysicalMargin().TopBottom() +
reflowInput.ComputedPhysicalBorderPadding().TopBottom();
size = std::max(size, 0);
reflowInput.SetComputedHeight(size);
} else {
size -= reflowInput.ComputedPhysicalMargin().LeftRight() +
reflowInput.ComputedPhysicalBorderPadding().LeftRight();
size = std::max(size, 0);
reflowInput.SetComputedWidth(size);
}
} else if (vertical) {
// For vertical progress bars, we need to position the bar specificly when
// the width isn't constrained (position == -1 and !ShouldUseNativeStyle())
// because aReflowInput.ComputedHeight() - size == 0.
yoffset += aReflowInput.ComputedHeight() - reflowInput.ComputedHeight();
}
xoffset += reflowInput.ComputedPhysicalMargin().left;
yoffset += reflowInput.ComputedPhysicalMargin().top;
ReflowOutput barDesiredSize(aReflowInput);
ReflowChild(aChild, aPresContext, barDesiredSize, reflowInput, xoffset,
yoffset, ReflowChildFlags::Default, aStatus);
FinishReflowChild(aChild, aPresContext, barDesiredSize, &reflowInput, xoffset,
yoffset, ReflowChildFlags::Default);
}
nsresult nsProgressFrame::AttributeChanged(int32_t aNameSpaceID,
nsAtom* aAttribute,
int32_t aModType) {
NS_ASSERTION(mBarDiv, "Progress bar div must exist!");
if (aNameSpaceID == kNameSpaceID_None &&
(aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max)) {
auto presShell = PresShell();
for (auto childFrame : PrincipalChildList()) {
presShell->FrameNeedsReflow(childFrame, IntrinsicDirty::None,
NS_FRAME_IS_DIRTY);
}
InvalidateFrame();
}
return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
LogicalSize nsProgressFrame::ComputeAutoSize(
gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize,
nscoord aAvailableISize, const LogicalSize& aMargin,
const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides,
ComputeSizeFlags aFlags) {
const WritingMode wm = GetWritingMode();
LogicalSize autoSize(wm);
autoSize.BSize(wm) = autoSize.ISize(wm) =
StyleFont()
->mFont.size.ScaledBy(nsLayoutUtils::FontSizeInflationFor(this))
.ToAppUnits(); // 1em
if (ResolvedOrientationIsVertical() == wm.IsVertical()) {
autoSize.ISize(wm) *= 10; // 10em
} else {
autoSize.BSize(wm) *= 10; // 10em
}
return autoSize.ConvertTo(aWM, wm);
}
nscoord nsProgressFrame::GetMinISize(gfxContext* aRenderingContext) {
RefPtr<nsFontMetrics> fontMet =
nsLayoutUtils::GetFontMetricsForFrame(this, 1.0f);
nscoord minISize = fontMet->Font().size.ToAppUnits(); // 1em
if (ResolvedOrientationIsVertical() == GetWritingMode().IsVertical()) {
// The orientation is inline
minISize *= 10; // 10em
}
return minISize;
}
nscoord nsProgressFrame::GetPrefISize(gfxContext* aRenderingContext) {
return GetMinISize(aRenderingContext);
}
bool nsProgressFrame::ShouldUseNativeStyle() const {
nsIFrame* barFrame = PrincipalChildList().FirstChild();
// Use the native style if these conditions are satisfied:
// - both frames use the native appearance;
// - neither frame has author specified rules setting the border or the
// background.
return StyleDisplay()->EffectiveAppearance() ==
StyleAppearance::ProgressBar &&
!Style()->HasAuthorSpecifiedBorderOrBackground() && barFrame &&
barFrame->StyleDisplay()->EffectiveAppearance() ==
StyleAppearance::Progresschunk &&
!barFrame->Style()->HasAuthorSpecifiedBorderOrBackground();
}
|
