65c06e6270
Change the name and reverse the sense. Naming things in the positive is better than naming them in the negative.
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
#include <mbgl/util/run_loop.hpp>
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#include <mbgl/util/string.hpp>
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#include <mbgl/util/io.hpp>
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#include <mbgl/storage/default_file_source.hpp>
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#include <cstdlib>
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#include <iostream>
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using namespace std::literals::chrono_literals;
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int main(int, char * []) {
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using namespace mbgl;
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unlink("offline.db");
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util::RunLoop loop;
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DefaultFileSource fileSource("offline.db", ".");
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fileSource.setAccessToken(getenv("MAPBOX_ACCESS_TOKEN"));
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LatLngBounds bayArea = LatLngBounds::hull(LatLng(37.2, -122.8), LatLng(38.1, -121.7));
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OfflineTilePyramidRegionDefinition definition("mapbox://styles/mapbox/streets-v8", bayArea, 0, 15, 1.0);
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OfflineRegionMetadata metadata;
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class Observer : public OfflineRegionObserver {
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public:
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Observer(util::RunLoop& loop_)
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: loop(loop_),
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start(SystemClock::now()) {
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}
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void statusChanged(OfflineRegionStatus status) override {
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std::string bytesPerSecond = "-";
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auto elapsedSeconds = (SystemClock::now() - start) / 1s;
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if (elapsedSeconds != 0) {
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bytesPerSecond = util::toString(status.completedResourceSize / elapsedSeconds);
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}
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std::cout << status.completedResourceCount << " / " << status.requiredResourceCount
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<< " resources"
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<< (status.requiredResourceCountIsPrecise ? "; " : " (indeterminate); ")
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<< status.completedResourceSize << " bytes downloaded"
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<< " (" << bytesPerSecond << " bytes/sec)"
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<< std::endl;
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if (status.complete()) {
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std::cout << "Finished" << std::endl;
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loop.stop();
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}
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}
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void responseError(Response::Error error) override {
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std::cerr << error.reason << " downloading resource: " << error.message << std::endl;
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}
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util::RunLoop& loop;
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SystemTimePoint start;
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};
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fileSource.createOfflineRegion(definition, metadata, [&] (std::exception_ptr error, optional<OfflineRegion> region) {
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if (error) {
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std::cerr << "Error creating region: " << util::toString(error) << std::endl;
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loop.stop();
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exit(1);
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} else {
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assert(region);
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fileSource.setOfflineRegionObserver(*region, std::make_unique<Observer>(loop));
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fileSource.setOfflineRegionDownloadState(*region, OfflineRegionDownloadState::Active);
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}
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});
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loop.run();
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return 0;
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}
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