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
|
#include <mbgl/annotation/annotation_manager.hpp>
#include <mbgl/annotation/annotation_source.hpp>
#include <mbgl/annotation/annotation_tile.hpp>
#include <mbgl/annotation/symbol_annotation_impl.hpp>
#include <mbgl/annotation/line_annotation_impl.hpp>
#include <mbgl/annotation/fill_annotation_impl.hpp>
#include <mbgl/annotation/style_sourced_annotation_impl.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/style/layers/symbol_layer.hpp>
#include <mbgl/style/layers/symbol_layer_impl.hpp>
#include <mbgl/storage/file_source.hpp>
#include <boost/function_output_iterator.hpp>
namespace mbgl {
using namespace style;
const std::string AnnotationManager::SourceID = "com.mapbox.annotations";
const std::string AnnotationManager::PointLayerID = "com.mapbox.annotations.points";
AnnotationManager::AnnotationManager(float pixelRatio)
: spriteAtlas({ 1024, 1024 }, pixelRatio) {
struct NullFileSource : public FileSource {
std::unique_ptr<AsyncRequest> request(const Resource&, Callback) override {
assert(false);
return nullptr;
}
};
NullFileSource nullFileSource;
// This is a special atlas, holding only images added via addIcon. But we need its isLoaded()
// method to return true.
spriteAtlas.load("", nullFileSource);
}
AnnotationManager::~AnnotationManager() = default;
AnnotationID AnnotationManager::addAnnotation(const Annotation& annotation, const uint8_t maxZoom) {
AnnotationID id = nextID++;
Annotation::visit(annotation, [&] (const auto& annotation_) {
this->add(id, annotation_, maxZoom);
});
return id;
}
Update AnnotationManager::updateAnnotation(const AnnotationID& id, const Annotation& annotation, const uint8_t maxZoom) {
return Annotation::visit(annotation, [&] (const auto& annotation_) {
return this->update(id, annotation_, maxZoom);
});
}
void AnnotationManager::removeAnnotation(const AnnotationID& id) {
if (symbolAnnotations.find(id) != symbolAnnotations.end()) {
symbolTree.remove(symbolAnnotations.at(id));
symbolAnnotations.erase(id);
} else if (shapeAnnotations.find(id) != shapeAnnotations.end()) {
obsoleteShapeAnnotationLayers.insert(shapeAnnotations.at(id)->layerID);
shapeAnnotations.erase(id);
} else {
assert(false); // Should never happen
}
}
void AnnotationManager::add(const AnnotationID& id, const SymbolAnnotation& annotation, const uint8_t) {
auto impl = std::make_shared<SymbolAnnotationImpl>(id, annotation);
symbolTree.insert(impl);
symbolAnnotations.emplace(id, impl);
}
void AnnotationManager::add(const AnnotationID& id, const LineAnnotation& annotation, const uint8_t maxZoom) {
ShapeAnnotationImpl& impl = *shapeAnnotations.emplace(id,
std::make_unique<LineAnnotationImpl>(id, annotation, maxZoom)).first->second;
obsoleteShapeAnnotationLayers.erase(impl.layerID);
}
void AnnotationManager::add(const AnnotationID& id, const FillAnnotation& annotation, const uint8_t maxZoom) {
ShapeAnnotationImpl& impl = *shapeAnnotations.emplace(id,
std::make_unique<FillAnnotationImpl>(id, annotation, maxZoom)).first->second;
obsoleteShapeAnnotationLayers.erase(impl.layerID);
}
void AnnotationManager::add(const AnnotationID& id, const StyleSourcedAnnotation& annotation, const uint8_t maxZoom) {
ShapeAnnotationImpl& impl = *shapeAnnotations.emplace(id,
std::make_unique<StyleSourcedAnnotationImpl>(id, annotation, maxZoom)).first->second;
obsoleteShapeAnnotationLayers.erase(impl.layerID);
}
Update AnnotationManager::update(const AnnotationID& id, const SymbolAnnotation& annotation, const uint8_t maxZoom) {
Update result = Update::Nothing;
auto it = symbolAnnotations.find(id);
if (it == symbolAnnotations.end()) {
assert(false); // Attempt to update a non-existent symbol annotation
return result;
}
const SymbolAnnotation& existing = it->second->annotation;
if (existing.geometry != annotation.geometry) {
result |= Update::AnnotationData;
}
if (existing.icon != annotation.icon) {
result |= Update::AnnotationData | Update::AnnotationStyle;
}
if (result != Update::Nothing) {
removeAndAdd(id, annotation, maxZoom);
}
return result;
}
Update AnnotationManager::update(const AnnotationID& id, const LineAnnotation& annotation, const uint8_t maxZoom) {
auto it = shapeAnnotations.find(id);
if (it == shapeAnnotations.end()) {
assert(false); // Attempt to update a non-existent shape annotation
return Update::Nothing;
}
removeAndAdd(id, annotation, maxZoom);
return Update::AnnotationData | Update::AnnotationStyle;
}
Update AnnotationManager::update(const AnnotationID& id, const FillAnnotation& annotation, const uint8_t maxZoom) {
auto it = shapeAnnotations.find(id);
if (it == shapeAnnotations.end()) {
assert(false); // Attempt to update a non-existent shape annotation
return Update::Nothing;
}
removeAndAdd(id, annotation, maxZoom);
return Update::AnnotationData | Update::AnnotationStyle;
}
Update AnnotationManager::update(const AnnotationID& id, const StyleSourcedAnnotation& annotation, const uint8_t maxZoom) {
auto it = shapeAnnotations.find(id);
if (it == shapeAnnotations.end()) {
assert(false); // Attempt to update a non-existent shape annotation
return Update::Nothing;
}
removeAndAdd(id, annotation, maxZoom);
return Update::AnnotationData | Update::AnnotationStyle;
}
void AnnotationManager::removeAndAdd(const AnnotationID& id, const Annotation& annotation, const uint8_t maxZoom) {
removeAnnotation(id);
Annotation::visit(annotation, [&] (const auto& annotation_) {
this->add(id, annotation_, maxZoom);
});
}
std::unique_ptr<AnnotationTileData> AnnotationManager::getTileData(const CanonicalTileID& tileID) {
if (symbolAnnotations.empty() && shapeAnnotations.empty())
return nullptr;
auto tileData = std::make_unique<AnnotationTileData>();
AnnotationTileLayer& pointLayer = tileData->layers.emplace(PointLayerID, PointLayerID).first->second;
LatLngBounds tileBounds(tileID);
symbolTree.query(boost::geometry::index::intersects(tileBounds),
boost::make_function_output_iterator([&](const auto& val){
val->updateLayer(tileID, pointLayer);
}));
for (const auto& shape : shapeAnnotations) {
shape.second->updateTileData(tileID, *tileData);
}
return tileData;
}
void AnnotationManager::updateStyle(Style& style) {
// Create annotation source, point layer, and point bucket
if (!style.getSource(SourceID)) {
std::unique_ptr<Source> source = std::make_unique<AnnotationSource>();
source->baseImpl->enabled = true;
style.addSource(std::move(source));
std::unique_ptr<SymbolLayer> layer = std::make_unique<SymbolLayer>(PointLayerID, SourceID);
layer->setSourceLayer(PointLayerID);
layer->setIconImage({"{sprite}"});
layer->setIconAllowOverlap(true);
layer->setIconIgnorePlacement(true);
layer->impl->spriteAtlas = &spriteAtlas;
style.addLayer(std::move(layer));
}
for (const auto& shape : shapeAnnotations) {
shape.second->updateStyle(style);
}
for (const auto& layer : obsoleteShapeAnnotationLayers) {
if (style.getLayer(layer)) {
style.removeLayer(layer);
}
}
obsoleteShapeAnnotationLayers.clear();
}
void AnnotationManager::updateData() {
for (auto& tile : tiles) {
tile->setData(getTileData(tile->id.canonical));
}
}
void AnnotationManager::addTile(AnnotationTile& tile) {
tiles.insert(&tile);
tile.setData(getTileData(tile.id.canonical));
}
void AnnotationManager::removeTile(AnnotationTile& tile) {
tiles.erase(&tile);
}
void AnnotationManager::addIcon(const std::string& name, std::shared_ptr<const SpriteImage> sprite) {
spriteAtlas.setSprite(name, sprite);
}
void AnnotationManager::removeIcon(const std::string& name) {
spriteAtlas.removeSprite(name);
}
double AnnotationManager::getTopOffsetPixelsForIcon(const std::string& name) {
auto sprite = spriteAtlas.getSprite(name);
return sprite ? -(sprite->image.size.height / sprite->pixelRatio) / 2 : 0;
}
} // namespace mbgl
|
