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
|
#include <mbgl/layout/symbol_instance.hpp>
#include <mbgl/style/layers/symbol_layer_properties.hpp>
#include <utility>
namespace mbgl {
using namespace style;
namespace {
const Shaping& getAnyShaping(const ShapedTextOrientations& shapedTextOrientations) {
if (shapedTextOrientations.right) return shapedTextOrientations.right;
if (shapedTextOrientations.center) return shapedTextOrientations.center;
if (shapedTextOrientations.left) return shapedTextOrientations.left;
if (shapedTextOrientations.vertical) return shapedTextOrientations.vertical;
return shapedTextOrientations.horizontal;
}
} // namespace
SymbolInstanceSharedData::SymbolInstanceSharedData(GeometryCoordinates line_,
const ShapedTextOrientations& shapedTextOrientations,
const optional<PositionedIcon>& shapedIcon,
const style::SymbolLayoutProperties::Evaluated& layout,
const float layoutTextSize,
const style::SymbolPlacementType textPlacement,
const std::array<float, 2>& textOffset,
const GlyphPositions& positions) : line(std::move(line_)) {
// Create the quads used for rendering the icon and glyphs.
if (shapedIcon) {
iconQuad = getIconQuad(*shapedIcon, layout, layoutTextSize, shapedTextOrientations.horizontal);
}
bool singleLineInitialized = false;
const auto initHorizontalGlyphQuads = [&] (SymbolQuads& quads, const Shaping& shaping) {
if (!shapedTextOrientations.singleLine) {
quads = getGlyphQuads(shaping, textOffset, layout, textPlacement, positions);
return;
}
if (!singleLineInitialized) {
rightJustifiedGlyphQuads = getGlyphQuads(shaping, textOffset, layout, textPlacement, positions);
singleLineInitialized = true;
}
};
if (shapedTextOrientations.right) {
initHorizontalGlyphQuads(rightJustifiedGlyphQuads, shapedTextOrientations.right);
}
if (shapedTextOrientations.center) {
initHorizontalGlyphQuads(centerJustifiedGlyphQuads, shapedTextOrientations.center);
}
if (shapedTextOrientations.left) {
initHorizontalGlyphQuads(leftJustifiedGlyphQuads, shapedTextOrientations.left);
}
if (shapedTextOrientations.vertical) {
verticalGlyphQuads = getGlyphQuads(shapedTextOrientations.vertical, textOffset, layout, textPlacement, positions);
}
}
bool SymbolInstanceSharedData::empty() const {
return rightJustifiedGlyphQuads.empty() && centerJustifiedGlyphQuads.empty() && leftJustifiedGlyphQuads.empty() && verticalGlyphQuads.empty();
}
SymbolInstance::SymbolInstance(Anchor& anchor_,
std::shared_ptr<SymbolInstanceSharedData> sharedData_,
const ShapedTextOrientations& shapedTextOrientations,
const optional<PositionedIcon>& shapedIcon,
const float textBoxScale_,
const float textPadding,
const SymbolPlacementType textPlacement,
const std::array<float, 2>& textOffset_,
const float iconBoxScale,
const float iconPadding,
const std::array<float, 2>& iconOffset_,
const IndexedSubfeature& indexedFeature,
const std::size_t layoutFeatureIndex_,
const std::size_t dataFeatureIndex_,
std::u16string key_,
const float overscaling,
const float rotate,
float radialTextOffset_) :
sharedData(std::move(sharedData_)),
anchor(anchor_),
// 'hasText' depends on finding at least one glyph in the shaping that's also in the GlyphPositionMap
hasText(!sharedData->empty()),
hasIcon(shapedIcon),
// Create the collision features that will be used to check whether this symbol instance can be placed
// As a collision approximation, we can use either the vertical or any of the horizontal versions of the feature
textCollisionFeature(sharedData->line, anchor, getAnyShaping(shapedTextOrientations), textBoxScale_, textPadding, textPlacement, indexedFeature, overscaling, rotate),
iconCollisionFeature(sharedData->line, anchor, shapedIcon, iconBoxScale, iconPadding, indexedFeature, rotate),
writingModes(WritingModeType::None),
layoutFeatureIndex(layoutFeatureIndex_),
dataFeatureIndex(dataFeatureIndex_),
textOffset(textOffset_),
iconOffset(iconOffset_),
key(std::move(key_)),
textBoxScale(textBoxScale_),
radialTextOffset(radialTextOffset_),
singleLine(shapedTextOrientations.singleLine) {
rightJustifiedGlyphQuadsSize = sharedData->rightJustifiedGlyphQuads.size();
centerJustifiedGlyphQuadsSize = sharedData->centerJustifiedGlyphQuads.size();
leftJustifiedGlyphQuadsSize = sharedData->leftJustifiedGlyphQuads.size();
verticalGlyphQuadsSize = sharedData->verticalGlyphQuads.size();
if (rightJustifiedGlyphQuadsSize || centerJustifiedGlyphQuadsSize || leftJustifiedGlyphQuadsSize) {
writingModes |= WritingModeType::Horizontal;
}
if (verticalGlyphQuadsSize) {
writingModes |= WritingModeType::Vertical;
}
}
const GeometryCoordinates& SymbolInstance::line() const {
assert(sharedData);
return sharedData->line;
}
const SymbolQuads& SymbolInstance::rightJustifiedGlyphQuads() const {
assert(sharedData);
return sharedData->rightJustifiedGlyphQuads;
}
const SymbolQuads& SymbolInstance::leftJustifiedGlyphQuads() const {
assert(sharedData);
return sharedData->leftJustifiedGlyphQuads;
}
const SymbolQuads& SymbolInstance::centerJustifiedGlyphQuads() const {
assert(sharedData);
return sharedData->centerJustifiedGlyphQuads;
}
const SymbolQuads& SymbolInstance::verticalGlyphQuads() const {
assert(sharedData);
return sharedData->verticalGlyphQuads;
}
const optional<SymbolQuad>& SymbolInstance::iconQuad() const {
assert(sharedData);
return sharedData->iconQuad;
}
void SymbolInstance::releaseSharedData() {
sharedData.reset();
}
optional<size_t> SymbolInstance::getDefaultHorizontalPlacedTextIndex() const {
if (placedRightTextIndex) return placedRightTextIndex;
if (placedCenterTextIndex) return placedCenterTextIndex;
if (placedLeftTextIndex) return placedLeftTextIndex;
return nullopt;
}
} // namespace mbgl
|
