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Change the humidity in the iot dashboard to random values every four seconds

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This commit is contained in:
Simon Hausmann 2021-05-18 13:07:24 +02:00
parent 73c396ed7a
commit 25d0b604e9
4 changed files with 97 additions and 32 deletions
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34
examples/iot-dashboard/main.cpp
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@ -9,10 +9,13 @@
LICENSE END */
#include "dashboard.h"
#include <chrono>
#include <sixtyfps_interpreter.h>
#include <fmt/core.h>
#include <fmt/chrono.h>
#include <random>
#include <time.h>
class PlaceholderWidget : public Widget
{
@ -52,13 +55,42 @@ void ClockWidget::update_clock()
set_property("time", sixtyfps::SharedString(current_time));
}
class HumidityWidget : public Widget
{
public:
HumidityWidget();
std::string type_name() const override { return "Humidity"; }
std::vector<PropertyDeclaration> properties() const override
{
return { PropertyDeclaration { "humidity_percent", "string" } };
}
private:
void update_fake_humidity();
sixtyfps::Timer fake_humidity_update_timer;
std::default_random_engine rng;
};
HumidityWidget::HumidityWidget()
: fake_humidity_update_timer(std::chrono::seconds(5), [=]() { update_fake_humidity(); }),
rng(std::chrono::system_clock::now().time_since_epoch().count())
{
}
void HumidityWidget::update_fake_humidity()
{
std::uniform_int_distribution<> humidity_range(20, 150);
int humidity_percent = humidity_range(rng);
set_property("humidity_percent", sixtyfps::SharedString(fmt::format("{}%", humidity_percent)));
}
int main()
{
DashboardBuilder builder;
builder.add_top_bar_widget(std::make_shared<ClockWidget>());
builder.add_grid_widget(std::make_shared<PlaceholderWidget>("Usage"), { 0, 0, 2 });
builder.add_grid_widget(std::make_shared<PlaceholderWidget>("IndoorTemperature"), { 0, 1 });
builder.add_grid_widget(std::make_shared<PlaceholderWidget>("Humidity"), { 1, 1 });
builder.add_grid_widget(std::make_shared<HumidityWidget>(), { 1, 1 });
builder.add_grid_widget(std::make_shared<PlaceholderWidget>("MyDevices"), { 0, 2, 2 });
builder.add_grid_widget(std::make_shared<PlaceholderWidget>("UsageDiagram"), { 2, 0, {}, 2 });
builder.add_grid_widget(std::make_shared<PlaceholderWidget>("LightIntensity"), { 2, 2 });