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Side by Side Diff: third_party/WebKit/Source/core/layout/PaginationTest.cpp

Issue 1375673004: Keep block pagination struts after layout, and store them before any type of break. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "config.h"
6 #include "core/layout/LayoutBlockFlow.h"
7 #include "core/layout/LayoutMultiColumnFlowThread.h"
8
9 #include "core/layout/LayoutTestHelper.h"
10 #include <gtest/gtest.h>
11
12 namespace blink {
13
14 class PaginationStrutTest : public RenderingTest {
15 public:
16 int strutForBox(const char* blockId)
17 {
18 Node* node = document().getElementById(blockId);
19 if (!node || !node->layoutObject() || !node->layoutObject()->isBox())
20 return std::numeric_limits<int>::min();
21 LayoutBox* box = toLayoutBox(node->layoutObject());
22 return box->paginationStrut().toInt();
23 }
24
25 int strutForLine(const char* containerId, int lineIndex)
26 {
27 Node* node = document().getElementById(containerId);
28 if (!node || !node->layoutObject() || !node->layoutObject()->isLayoutBlo ckFlow())
29 return std::numeric_limits<int>::min();
30 LayoutBlockFlow* block = toLayoutBlockFlow(node->layoutObject());
31 if (block->multiColumnFlowThread())
32 block = block->multiColumnFlowThread();
33 for (RootInlineBox* line = block->firstRootBox(); line; line = line->nex tRootBox(), lineIndex--) {
34 if (lineIndex)
35 continue;
36 return line->paginationStrut().toInt();
37 }
38 return std::numeric_limits<int>::min();
39 }
40 };
41
42 TEST_F(PaginationStrutTest, LineWithStrut)
43 {
44 setBodyInnerHTML(
45 "<div id='paged' style='overflow:-webkit-paged-y; height:200px; line-hei ght:150px;'>"
46 " line1<br>"
47 " line2<br>"
48 "</div>");
49 EXPECT_EQ(0, strutForLine("paged", 0));
50 EXPECT_EQ(50, strutForLine("paged", 1));
51 }
52
53 TEST_F(PaginationStrutTest, BlockWithStrut)
54 {
55 setBodyInnerHTML(
56 "<div style='overflow:-webkit-paged-y; height:200px; line-height:150px;' >"
57 " <div id='block1'>line1</div>"
58 " <div id='block2'>line2</div>"
59 "</div>");
60 EXPECT_EQ(0, strutForBox("block1"));
61 EXPECT_EQ(0, strutForLine("block1", 0));
62 EXPECT_EQ(50, strutForBox("block2"));
63 EXPECT_EQ(0, strutForLine("block2", 0));
64 }
65
66 TEST_F(PaginationStrutTest, FloatWithStrut)
67 {
68 setBodyInnerHTML(
69 "<div style='overflow:-webkit-paged-y; height:200px; line-height:150px;' >"
70 " <div style='height:120px;'></div>"
71 " <div id='float' style='float:left;'>line</div>"
72 "</div>");
73 EXPECT_EQ(80, strutForBox("float"));
74 EXPECT_EQ(0, strutForLine("float", 0));
75 }
76
77 TEST_F(PaginationStrutTest, UnbreakableBlockWithStrut)
78 {
79 setBodyInnerHTML(
80 "<style>img { display:block; width:100px; height:150px; outline:4px soli d blue; padding:0; border:none; margin:0; }</style>"
81 "<div style='overflow:-webkit-paged-y; height:200px;'>"
82 " <img id='img1'>"
83 " <img id='img2'>"
84 "</div>");
85 EXPECT_EQ(0, strutForBox("img1"));
86 EXPECT_EQ(50, strutForBox("img2"));
87 }
88
89 TEST_F(PaginationStrutTest, BreakBefore)
90 {
91 setBodyInnerHTML(
92 "<div style='overflow:-webkit-paged-y; height:400px; line-height:50px;'> "
93 " <div id='block1'>line1</div>"
94 " <div id='block2' style='-webkit-column-break-before:always;'>line2< /div>"
95 "</div>");
96 EXPECT_EQ(0, strutForBox("block1"));
97 EXPECT_EQ(0, strutForLine("block1", 0));
98 EXPECT_EQ(350, strutForBox("block2"));
99 EXPECT_EQ(0, strutForLine("block2", 0));
100 }
101
102 TEST_F(PaginationStrutTest, BlockWithStrutPropagatedFromInnerBlock)
103 {
104 setBodyInnerHTML(
105 "<div style='overflow:-webkit-paged-y; height:200px; line-height:150px;' >"
106 " <div id='block1'>line1</div>"
107 " <div id='block2' style='padding-top:2px;'>"
108 " <div id='innerBlock' style='padding-top:2px;'>line2</div>"
109 " </div>"
110 "</div>");
111 EXPECT_EQ(0, strutForBox("block1"));
112 EXPECT_EQ(0, strutForLine("block1", 0));
113 EXPECT_EQ(50, strutForBox("block2"));
114 EXPECT_EQ(0, strutForBox("innerBlock"));
115 EXPECT_EQ(0, strutForLine("innerBlock", 0));
116 }
117
118 TEST_F(PaginationStrutTest, BlockWithStrutPropagatedFromUnbreakableInnerBlock)
119 {
120 setBodyInnerHTML(
121 "<div style='overflow:-webkit-paged-y; height:400px; line-height:150px;' >"
122 " <div id='block1'>line1</div>"
123 " <div id='block2' style='padding-top:2px;'>"
124 " <div id='innerBlock' style='padding-top:2px; -webkit-column-bre ak-inside:avoid;'>"
125 " line2<br>"
126 " line3<br>"
127 " </div>"
128 " </div>"
129 "</div>");
130 EXPECT_EQ(0, strutForBox("block1"));
131 EXPECT_EQ(0, strutForLine("block1", 0));
132 EXPECT_EQ(250, strutForBox("block2"));
133 EXPECT_EQ(0, strutForBox("innerBlock"));
134 EXPECT_EQ(0, strutForLine("innerBlock", 0));
135 EXPECT_EQ(0, strutForLine("innerBlock", 1));
136 }
137
138 TEST_F(PaginationStrutTest, InnerBlockWithBreakBefore)
139 {
140 setBodyInnerHTML(
141 "<div style='overflow:-webkit-paged-y; height:200px; line-height:150px;' >"
142 " <div id='block1'>line1</div>"
143 " <div id='block2' style='padding-top:2px;'>"
144 " <div id='innerBlock' style='padding-top:2px; -webkit-column-bre ak-before:always;'>line2</div>"
145 " </div>"
146 "</div>");
147 EXPECT_EQ(0, strutForBox("block1"));
148 EXPECT_EQ(0, strutForLine("block1", 0));
149 EXPECT_EQ(0, strutForBox("block2"));
150 EXPECT_EQ(48, strutForBox("innerBlock"));
151 EXPECT_EQ(0, strutForLine("innerBlock", 0));
152 }
153
154 } // namespace blink
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