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#pragma once
#include <mbgl/map/mode.hpp>
#include <mbgl/style/layers/symbol_layer_properties.hpp>
#include <mbgl/layout/symbol_feature.hpp>
#include <mbgl/layout/symbol_instance.hpp>
#include <memory>
#include <map>
#include <unordered_set>
#include <vector>
namespace mbgl {
class GeometryTileLayer;
class CollisionTile;
class SpriteAtlas;
class GlyphAtlas;
class SymbolBucket;
namespace style {
class Filter;
} // namespace style
struct Anchor;
class SymbolLayout {
public:
SymbolLayout(std::string bucketName_,
std::string sourceLayerName_,
uint32_t overscaling,
float zoom,
const MapMode,
const GeometryTileLayer&,
const style::Filter&,
style::SymbolLayoutProperties,
float textMaxSize,
SpriteAtlas&);
bool canPrepare(GlyphAtlas&);
void prepare(uintptr_t tileUID,
GlyphAtlas&);
std::unique_ptr<SymbolBucket> place(CollisionTile&);
bool hasSymbolInstances() const;
enum State {
Pending, // Waiting for the necessary glyphs or icons to be available.
Prepared, // The potential positions of text and icons have been determined.
Placed // The final positions have been determined, taking into account prior layers.
};
State state = Pending;
const std::string bucketName;
const std::string sourceLayerName;
private:
void addFeature(const GeometryCollection&,
const Shaping& shapedText,
const PositionedIcon& shapedIcon,
const GlyphPositions& face,
const size_t index);
bool anchorIsTooClose(const std::u16string& text, const float repeatDistance, Anchor&);
std::map<std::u16string, std::vector<Anchor>> compareText;
void addToDebugBuffers(CollisionTile&, SymbolBucket&);
// Adds placed items to the buffer.
template <typename Buffer>
void addSymbols(Buffer&, const SymbolQuads&, float scale,
const bool keepUpright, const style::SymbolPlacementType, const float placementAngle);
const float overscaling;
const float zoom;
const MapMode mode;
const style::SymbolLayoutProperties layout;
const float textMaxSize;
SpriteAtlas& spriteAtlas;
const uint32_t tileSize;
const float tilePixelRatio;
bool sdfIcons = false;
bool iconsNeedLinear = false;
GlyphRangeSet ranges;
std::vector<SymbolInstance> symbolInstances;
std::vector<SymbolFeature> features;
};
} // namespace mbgl
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