RmlUi/Samples/tutorial/template/src/main.cpp

/*
 * Copyright (c) 2006 - 2008
 * Wandering Monster Studios Limited
 *
 * Any use of this program is governed by the terms of Wandering Monster
 * Studios Limited's Licence Agreement included with this program, a copy
 * of which can be obtained by contacting Wandering Monster Studios
 * Limited at [email protected].
 *
 */

#include <RmlUi/Core.h>
#include <RmlUi/Debugger.h>
#include <Input.h>
#include <Shell.h>
#include <ShellRenderInterfaceOpenGL.h>

Rml::Context* context = nullptr;

ShellRenderInterfaceExtensions *shell_renderer;

void GameLoop()
{
	context->Update();

	shell_renderer->PrepareRenderBuffer();
	context->Render();
	shell_renderer->PresentRenderBuffer();
}

#if defined RMLUI_PLATFORM_WIN32
#include <windows.h>
int APIENTRY WinMain(HINSTANCE RMLUI_UNUSED_PARAMETER(instance_handle), HINSTANCE RMLUI_UNUSED_PARAMETER(previous_instance_handle), char* RMLUI_UNUSED_PARAMETER(command_line), int RMLUI_UNUSED_PARAMETER(command_show))
#else
int main(int RMLUI_UNUSED_PARAMETER(argc), char** RMLUI_UNUSED_PARAMETER(argv))
#endif
{
#ifdef RMLUI_PLATFORM_WIN32
	RMLUI_UNUSED(instance_handle);
	RMLUI_UNUSED(previous_instance_handle);
	RMLUI_UNUSED(command_line);
	RMLUI_UNUSED(command_show);
#else
	RMLUI_UNUSED(argc);
	RMLUI_UNUSED(argv);
#endif

#ifdef RMLUI_PLATFORM_WIN32
        AllocConsole();
#endif

	int window_width = 1024;
	int window_height = 768;

	ShellRenderInterfaceOpenGL opengl_renderer;
	shell_renderer = &opengl_renderer;

	// Generic OS initialisation, creates a window and attaches OpenGL.
	if (!Shell::Initialise() ||
		!Shell::OpenWindow("Template Tutorial", shell_renderer, window_width, window_height, true))
	{
		Shell::Shutdown();
		return -1;
	}

	// RmlUi initialisation.
	Rml::SetRenderInterface(&opengl_renderer);
	opengl_renderer.SetViewport(window_width, window_height);

	ShellSystemInterface system_interface;
	Rml::SetSystemInterface(&system_interface);

	Rml::Initialise();

	// Create the main RmlUi context and set it on the shell's input layer.
	context = Rml::CreateContext("main", Rml::Vector2i(window_width, window_height));
	if (context == nullptr)
	{
		Rml::Shutdown();
		Shell::Shutdown();
		return -1;
	}

	Rml::Debugger::Initialise(context);
	Input::SetContext(context);
	Shell::SetContext(context);

	Shell::LoadFonts("assets/");

	// Load and show the tutorial document.
	if (Rml::ElementDocument * document = context->LoadDocument("tutorial/template/data/tutorial.rml"))
		document->Show();

	Shell::EventLoop(GameLoop);

	// Shutdown RmlUi.
	Rml::Shutdown();

	Shell::CloseWindow();
	Shell::Shutdown();

	return 0;
}