Method Gui

framework/gui.h:350–519

template <vkb::BindingType bindingType>
inline Gui<bindingType>::Gui(
    vkb::rendering::RenderContext<bindingType> &render_context_, Window const &window, vkb::stats::Stats<bindingType> const *stats, float font_size, bool explicit_update) :
    render_context{render_context_},
    content_scale_factor{window.get_content_scale_factor()},
    dpi_factor{window.get_dpi_factor() * content_scale_factor},
    explicit_update{explicit_update},
    stats_view(stats)
{
	ImGui::CreateContext();

	ImGuiStyle &style = ImGui::GetStyle();

	// Color scheme
	style.Colors[ImGuiCol_WindowBg]         = ImVec4(0.005f, 0.005f, 0.005f, 0.94f);
	style.Colors[ImGuiCol_TitleBg]          = ImVec4(1.0f, 0.0f, 0.0f, 0.6f);
	style.Colors[ImGuiCol_TitleBgActive]    = ImVec4(1.0f, 0.0f, 0.0f, 0.8f);
	style.Colors[ImGuiCol_MenuBarBg]        = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
	style.Colors[ImGuiCol_Header]           = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
	style.Colors[ImGuiCol_HeaderActive]     = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
	style.Colors[ImGuiCol_HeaderHovered]    = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
	style.Colors[ImGuiCol_FrameBg]          = ImVec4(0.0f, 0.0f, 0.0f, 0.8f);
	style.Colors[ImGuiCol_CheckMark]        = ImVec4(0.0f, 1.0f, 0.0f, 1.0f);
	style.Colors[ImGuiCol_SliderGrab]       = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
	style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(1.0f, 0.0f, 0.0f, 0.8f);
	style.Colors[ImGuiCol_FrameBgHovered]   = ImVec4(1.0f, 1.0f, 1.0f, 0.1f);
	style.Colors[ImGuiCol_FrameBgActive]    = ImVec4(1.0f, 1.0f, 1.0f, 0.2f);
	style.Colors[ImGuiCol_Button]           = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
	style.Colors[ImGuiCol_ButtonHovered]    = ImVec4(1.0f, 0.0f, 0.0f, 0.6f);
	style.Colors[ImGuiCol_ButtonActive]     = ImVec4(1.0f, 0.0f, 0.0f, 0.8f);

	// Borderless window
	style.WindowBorderSize = 0.0f;

	// Global scale
	style.ScaleAllSizes(dpi_factor);

	// Dimensions
	ImGuiIO &io                = ImGui::GetIO();
	auto     extent            = render_context.get_surface_extent();
	io.DisplaySize.x           = static_cast<float>(extent.width);
	io.DisplaySize.y           = static_cast<float>(extent.height);
	io.FontGlobalScale         = 1.0f;
	io.DisplayFramebufferScale = ImVec2(1.0f, 1.0f);

	// Enable keyboard navigation
	io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
	io.KeyMap[ImGuiKey_Space]      = static_cast<int>(KeyCode::Space);
	io.KeyMap[ImGuiKey_Enter]      = static_cast<int>(KeyCode::Enter);
	io.KeyMap[ImGuiKey_LeftArrow]  = static_cast<int>(KeyCode::Left);
	io.KeyMap[ImGuiKey_RightArrow] = static_cast<int>(KeyCode::Right);
	io.KeyMap[ImGuiKey_UpArrow]    = static_cast<int>(KeyCode::Up);
	io.KeyMap[ImGuiKey_DownArrow]  = static_cast<int>(KeyCode::Down);
	io.KeyMap[ImGuiKey_Tab]        = static_cast<int>(KeyCode::Tab);
	io.KeyMap[ImGuiKey_Escape]     = static_cast<int>(KeyCode::Backspace);

	// Default font
	fonts.emplace_back(default_font, font_size * dpi_factor);

	// Debug window font