#include "iwa/addons/imgui/fps_widget.hpp"

#include <fmt/format.h>
#include <imgui.h>

namespace iwa
{
void ImGuiFpsWidget::draw()
{
    mFpsCalculator.tickFrame();

    const std::string fpsText = fmt::format("{}", static_cast<unsigned>(mFpsCalculator.getFps()));
    const ImVec2 textSize = ImGui::CalcTextSize(fpsText.c_str());
    ImGui::SetNextWindowPos(ImVec2(0, 0));
    ImGui::SetNextWindowSize(ImVec2(textSize.x + 2 * ImGui::GetStyle().WindowPadding.x, 0));
    ImGui::Begin("#fps", nullptr, ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoInputs);
    ImGui::TextUnformatted(fpsText.c_str());
    ImGui::End();
}
} // namespace iwa