imgui_appearance_policy_internal.h

#pragma once
 
#include "pixelbullet/application/imgui/imgui_layer.h"
#include "pixelbullet/math/validation.h"
 
namespace pixelbullet::application_internal
{
inline constexpr float k_default_imgui_style_scale = 1.0f;
inline constexpr float k_default_imgui_font_size_pixels = 13.0f;
 
[[nodiscard]] inline float sanitize_imgui_positive_scale(const float value, const float fallback) noexcept
{
    return math::is_finite(value) && value > 0.0f ? value : fallback;
}
 
[[nodiscard]] inline ImGuiAppearanceConfig sanitize_imgui_appearance_config(const ImGuiAppearanceConfig& appearance) noexcept
{
    ImGuiAppearanceConfig sanitized = appearance;
    sanitized.style_scale = sanitize_imgui_positive_scale(sanitized.style_scale, k_default_imgui_style_scale);
    sanitized.font_size_pixels = sanitize_imgui_positive_scale(sanitized.font_size_pixels, k_default_imgui_font_size_pixels);
    sanitized.icon_font_size_pixels = sanitize_imgui_positive_scale(sanitized.icon_font_size_pixels, k_default_imgui_font_size_pixels);
    sanitized.mono_font_size_pixels = sanitize_imgui_positive_scale(sanitized.mono_font_size_pixels, k_default_imgui_font_size_pixels);
    return sanitized;
}
} // namespace pixelbullet::application_internal