xtd 0.2.0
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iprogress.cpp

Shows how to use xtd::iprogress interface.

#include <xtd/as>
#include <xtd/console>
#include <xtd/iprogress>
#include <xtd/math>
using namespace xtd;
class generic_progress {
public:
generic_progress() = default;
generic_progress(int val, int min = 0, int max = 100, const string& msg = "") : message_(msg) {
minimum(min);
maximum(max);
value(val);
}
int maximum() const noexcept {return maximum_;}
generic_progress& maximum(int maximum) noexcept {
maximum_ = maximum;
minimum_ = math::min(minimum(), maximum);
value_ = math::min(value(), maximum);
return *this;
}
int minimum() const noexcept {return minimum_;}
generic_progress& minimum(int minimum) noexcept {
minimum_ = minimum;
maximum_ = math::max(maximum(), minimum);
value_ = math::max(value(), minimum);
return *this;
}
const string& message() const noexcept {return message_;}
generic_progress& message(const string& message) noexcept {
message_ = message;
return *this;
}
float percent() const noexcept {return maximum_ - minimum_ ? as<float>(value() - minimum()) / (maximum() - minimum()) : 1;}
generic_progress& increment(int increment) noexcept {
value(value() + increment);
return *this;
}
generic_progress& perform_step() noexcept {return increment(step());}
generic_progress& perform_step(const string& message) noexcept {
message_ = message;
return perform_step();
}
int value() const noexcept {return value_;}
generic_progress& value(int value) noexcept {
value_ = math::clamp(value, minimum(), maximum());
return *this;
}
int step() const noexcept {return step_;}
generic_progress& step(int step) noexcept {
step_ = step;
return *this;
}
private:
int minimum_ = 0;
int maximum_ = 100;
int step_ = 1;
int value_ = 0;
string message_;
};
class print_generic_progress : public iprogress<generic_progress> {
public:
print_generic_progress() = default;
void report(const generic_progress& value) noexcept override {
console::write_line("completion={,3}%, message=\"{}\"", as<int>(value.percent() * 100), value.message());
}
};
auto main() -> int {
console::write_line("Started");
auto print_progress = print_generic_progress {};
auto progress = generic_progress {0, 0, 5, "Initialized"};
print_progress.report(progress);
// Open device....
print_progress.report(progress.perform_step("Device opened"));
// Update 1 device....
print_progress.report(progress.perform_step("Device updated 1"));
// Update 2 device....
print_progress.report(progress.perform_step("Device updated 2"));
// Update 3 device....
print_progress.report(progress.perform_step("Device updated 3"));
// Close device....
print_progress.report(progress.perform_step("Device closed"));
console::write_line("Ended");
}
// The example displays output similar to the following:
//
// Started
// completion= 0%, message="Initialized"
// completion= 20%, message="Device opened"
// completion= 40%, message="Device updated 1"
// completion= 60%, message="Device updated 2"
// completion= 80%, message="Device updated 3"
// completion=100%, message="Device closed"
// Ended
Defines a provider for progress updates.
Definition iprogress.h:19
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.h:10