summaryrefslogtreecommitdiff
path: root/dom/svg/SVGTextContentElement.cpp
blob: a3e813e7ebeffc3f6a7744d14fe2b21e4a3d482b (plain)
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
/* -*- 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 "mozilla/dom/SVGTextContentElement.h"
#include "nsISVGPoint.h"
#include "SVGTextFrame.h"
#include "mozilla/dom/SVGIRect.h"

namespace mozilla {
namespace dom {

nsSVGEnumMapping SVGTextContentElement::sLengthAdjustMap[] = {
  { &nsGkAtoms::spacing, SVG_LENGTHADJUST_SPACING },
  { &nsGkAtoms::spacingAndGlyphs, SVG_LENGTHADJUST_SPACINGANDGLYPHS },
  { nullptr, 0 }
};

nsSVGElement::EnumInfo SVGTextContentElement::sEnumInfo[1] =
{
  { &nsGkAtoms::lengthAdjust, sLengthAdjustMap, SVG_LENGTHADJUST_SPACING }
};

nsSVGElement::LengthInfo SVGTextContentElement::sLengthInfo[1] =
{
  { &nsGkAtoms::textLength, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::XY }
};

SVGTextFrame*
SVGTextContentElement::GetSVGTextFrame()
{
  nsIFrame* frame = GetPrimaryFrame(Flush_Layout);
  while (frame) {
    SVGTextFrame* textFrame = do_QueryFrame(frame);
    if (textFrame) {
      return textFrame;
    }
    frame = frame->GetParent();
  }
  return nullptr;
}

already_AddRefed<SVGAnimatedLength>
SVGTextContentElement::TextLength()
{
  return LengthAttributes()[TEXTLENGTH].ToDOMAnimatedLength(this);
}

already_AddRefed<SVGAnimatedEnumeration>
SVGTextContentElement::LengthAdjust()
{
  return EnumAttributes()[LENGTHADJUST].ToDOMAnimatedEnum(this);
}

//----------------------------------------------------------------------

int32_t
SVGTextContentElement::GetNumberOfChars()
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  return textFrame ? textFrame->GetNumberOfChars(this) : 0;
}

float
SVGTextContentElement::GetComputedTextLength()
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  return textFrame ? textFrame->GetComputedTextLength(this) : 0.0f;
}

void
SVGTextContentElement::SelectSubString(uint32_t charnum, uint32_t nchars, ErrorResult& rv)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  if (!textFrame)
    return;

  rv = textFrame->SelectSubString(this, charnum, nchars);
}

float
SVGTextContentElement::GetSubStringLength(uint32_t charnum, uint32_t nchars, ErrorResult& rv)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  if (!textFrame)
    return 0.0f;

  float length = 0.0f;
  rv = textFrame->GetSubStringLength(this, charnum, nchars, &length);
  return length;
}

already_AddRefed<nsISVGPoint>
SVGTextContentElement::GetStartPositionOfChar(uint32_t charnum, ErrorResult& rv)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  if (!textFrame) {
    rv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  nsCOMPtr<nsISVGPoint> point;
  rv = textFrame->GetStartPositionOfChar(this, charnum, getter_AddRefs(point));
  return point.forget();
}

already_AddRefed<nsISVGPoint>
SVGTextContentElement::GetEndPositionOfChar(uint32_t charnum, ErrorResult& rv)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  if (!textFrame) {
    rv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  nsCOMPtr<nsISVGPoint> point;
  rv = textFrame->GetEndPositionOfChar(this, charnum, getter_AddRefs(point));
  return point.forget();
}

already_AddRefed<SVGIRect>
SVGTextContentElement::GetExtentOfChar(uint32_t charnum, ErrorResult& rv)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();

  if (!textFrame) {
    rv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<SVGIRect> rect;
  rv = textFrame->GetExtentOfChar(this, charnum, getter_AddRefs(rect));
  return rect.forget();
}

float
SVGTextContentElement::GetRotationOfChar(uint32_t charnum, ErrorResult& rv)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();

  if (!textFrame) {
    rv.Throw(NS_ERROR_FAILURE);
    return 0.0f;
  }

  float rotation;
  rv = textFrame->GetRotationOfChar(this, charnum, &rotation);
  return rotation;
}

int32_t
SVGTextContentElement::GetCharNumAtPosition(nsISVGPoint& aPoint)
{
  SVGTextFrame* textFrame = GetSVGTextFrame();
  return textFrame ? textFrame->GetCharNumAtPosition(this, &aPoint) : -1;
}

} // namespace dom
} // namespace mozilla