1e3a744d22
- priorities can be low or regular - offline downloads should have low priority to not throttle "regular requests"
116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
#pragma once
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#include <mbgl/storage/response.hpp>
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#include <mbgl/util/optional.hpp>
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#include <mbgl/util/font_stack.hpp>
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#include <mbgl/util/tileset.hpp>
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#include <mbgl/util/util.hpp>
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#include <mbgl/util/traits.hpp>
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#include <string>
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namespace mbgl {
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class Resource {
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public:
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enum Kind : uint8_t {
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Unknown = 0,
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Style,
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Source,
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Tile,
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Glyphs,
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SpriteImage,
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SpriteJSON,
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Image
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};
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enum class Priority : bool {
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Regular,
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Low
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};
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struct TileData {
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std::string urlTemplate;
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uint8_t pixelRatio;
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int32_t x;
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int32_t y;
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int8_t z;
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};
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enum class LoadingMethod : uint8_t {
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None = 0b00,
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Cache = 0b01,
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Network = 0b10,
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CacheOnly = Cache,
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NetworkOnly = Network,
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All = Cache | Network,
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};
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Resource(Kind kind_,
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std::string url_,
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Priority priority_ = Resource::Priority::Regular,
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optional<TileData> tileData_ = {},
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LoadingMethod loadingMethod_ = LoadingMethod::All)
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: kind(kind_),
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loadingMethod(loadingMethod_),
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priority(priority_),
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url(std::move(url_)),
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tileData(std::move(tileData_)) {
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}
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void setPriority(Priority p) { priority = p; }
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bool hasLoadingMethod(LoadingMethod method);
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static Resource style(const std::string& url, const Priority priority = Resource::Priority::Regular);
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static Resource source(const std::string& url, const Priority priority = Resource::Priority::Regular);
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static Resource tile(const std::string& urlTemplate,
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float pixelRatio,
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int32_t x,
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int32_t y,
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int8_t z,
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Tileset::Scheme scheme,
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const Priority priority = Resource::Priority::Regular,
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LoadingMethod = LoadingMethod::All);
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static Resource glyphs(const std::string& urlTemplate,
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const FontStack& fontStack,
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const std::pair<uint16_t, uint16_t>& glyphRange,
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const Priority priority = Resource::Priority::Regular);
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static Resource spriteImage(const std::string& base, float pixelRatio, const Priority priority = Resource::Priority::Regular);
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static Resource spriteJSON(const std::string& base, float pixelRatio, const Priority priority = Resource::Priority::Regular);
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static Resource image(const std::string& url, const Priority priority = Resource::Priority::Regular);
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Kind kind;
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LoadingMethod loadingMethod;
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Priority priority;
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std::string url;
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// Includes auxiliary data if this is a tile request.
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optional<TileData> tileData;
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optional<Timestamp> priorModified = {};
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optional<Timestamp> priorExpires = {};
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optional<std::string> priorEtag = {};
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std::shared_ptr<const std::string> priorData;
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};
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MBGL_CONSTEXPR Resource::LoadingMethod operator|(Resource::LoadingMethod a, Resource::LoadingMethod b) {
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return Resource::LoadingMethod(mbgl::underlying_type(a) | mbgl::underlying_type(b));
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}
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MBGL_CONSTEXPR Resource::LoadingMethod& operator|=(Resource::LoadingMethod& a, Resource::LoadingMethod b) {
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return (a = a | b);
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}
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MBGL_CONSTEXPR Resource::LoadingMethod operator&(Resource::LoadingMethod a, Resource::LoadingMethod b) {
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return Resource::LoadingMethod(mbgl::underlying_type(a) & mbgl::underlying_type(b));
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}
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inline bool Resource::hasLoadingMethod(Resource::LoadingMethod method) {
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return (loadingMethod & method) != Resource::LoadingMethod::None;
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}
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} // namespace mbgl
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