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
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "pdf/accessibility.h"
#include <algorithm>
#include <utility>
#include <vector>
#include "base/check_op.h"
#include "base/numerics/safe_math.h"
#include "pdf/accessibility_helper.h"
#include "pdf/accessibility_structs.h"
#include "pdf/pdfium/pdfium_engine.h"
#include "ui/gfx/geometry/rect_f.h"
namespace chrome_pdf {
namespace {
AccessibilityFormFieldInfo GetAccessibilityFormFieldInfo(
PDFiumPage* page,
uint32_t text_run_count) {
AccessibilityFormFieldInfo form_field_info;
form_field_info.text_fields = page->GetTextFieldInfo(text_run_count);
return form_field_info;
}
} // namespace
void GetAccessibilityInfo(PDFiumEngine* engine,
int32_t page_index,
AccessibilityPageInfo& page_info,
std::vector<AccessibilityTextRunInfo>& text_runs,
std::vector<AccessibilityCharInfo>& chars,
AccessibilityPageObjects& page_objects) {
PDFiumPage* page = engine->GetPage(page_index);
CHECK(page);
const int raw_char_count = page->GetCharCount();
// Treat a char count of -1 (error) as 0 (an empty page), since
// other pages might have valid content.
const uint32_t char_count = std::max<uint32_t>(raw_char_count, 0);
page_info.page_index = page_index;
page_info.bounds = page->rect();
page_info.char_count = char_count;
page_info.is_searchified = page->IsPageSearchified();
page->GetTextAndImageInfo(text_runs, chars, page_objects.images);
page_info.text_run_count = text_runs.size();
page_objects.links = page->GetLinkInfo(text_runs);
page_objects.highlights = page->GetHighlightInfo(text_runs);
page_objects.form_fields =
GetAccessibilityFormFieldInfo(page, page_info.text_run_count);
}
} // namespace chrome_pdf
|
