ImGuiBackend Class

Platform-agnostic interface for ImGui backend implementations. More...

Declaration

class helios::imgui::ImGuiBackend { ... }

Derived Classes

class	ImGuiGlfwOpenGLBackend
	ImGui backend for GLFW windowing and OpenGL 4.1 rendering. More...

Public Constructors Index

	ImGuiBackend ()=default
	Default constructor. More...

Public Destructor Index

	~ImGuiBackend ()=default
	Virtual destructor for polymorphic backend cleanup. More...

Public Member Functions Index

bool	newFrame ()=0
	Prepares ImGui for a new frame. More...
void	renderDrawData (ImDrawData *drawData)=0
	Renders ImGui draw data to the screen. More...

Description

Platform-agnostic interface for ImGui backend implementations.

Concrete backends (e.g., GLFW+OpenGL, SDL+Vulkan) implement this interface to provide platform-specific initialization, frame setup, and rendering.

Definition at line 22 of file ImGuiBackend.ixx.

Public Constructors

ImGuiBackend()

helios::imgui::ImGuiBackend::ImGuiBackend ()

default

Default constructor.

Definition at line 29 of file ImGuiBackend.ixx.

Public Destructor

~ImGuiBackend()

virtual helios::imgui::ImGuiBackend::~ImGuiBackend ()

virtual default

Virtual destructor for polymorphic backend cleanup.

Definition at line 34 of file ImGuiBackend.ixx.

Public Member Functions

newFrame()

virtual bool helios::imgui::ImGuiBackend::newFrame ()

Prepares ImGui for a new frame.

Must be called at the beginning of each frame before any ImGui calls. Typically invokes platform-specific NewFrame() implementations.

Returns

true if frame setup succeeded; otherwise false.

Definition at line 44 of file ImGuiBackend.ixx.

Referenced by helios::imgui::ImGuiOverlay::render.

renderDrawData()

virtual void helios::imgui::ImGuiBackend::renderDrawData (ImDrawData * drawData)

Renders ImGui draw data to the screen.

Called after ImGui::Render() to submit draw commands to the GPU.

Parameters

drawData

Pointer to ImGui draw data (typically from ImGui::GetDrawData()). Implementations may treat nullptr as a no-op.

Definition at line 54 of file ImGuiBackend.ixx.

Referenced by helios::imgui::ImGuiOverlay::render.

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The documentation for this class was generated from the following file:

• ImGuiBackend.ixx

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