Function main

examples/Canvas.cpp:13–237

#include <cstdint>

int main() {
	// Create the main SFML window
	sf::RenderWindow app_window( sf::VideoMode( { 800, 600 } ), "SFGUI Canvas Example", sf::Style::Titlebar | sf::Style::Close );

	// We have to do this because we don't use SFML to draw.
	app_window.resetGLStates();

	// Create an SFGUI. This is required before doing anything with SFGUI.
	sfg::SFGUI sfgui;

	// Create our OpenGL canvas window
	auto opengl_window = sfg::Window::Create();
	opengl_window->SetTitle( "OpenGL canvas" );
	opengl_window->SetPosition( sf::Vector2f( 50.f, 50.f ) );

	// Create our SFML canvas window
	auto sfml_window = sfg::Window::Create();
	sfml_window->SetTitle( "SFML canvas" );
	sfml_window->SetPosition( sf::Vector2f( 300.f, 50.f ) );

	// Create our SFML scrollable canvas window
	auto sfml_scrollable_window = sfg::Window::Create( sfg::Window::Style::TITLEBAR | sfg::Window::Style::BACKGROUND );
	sfml_scrollable_window->SetTitle( "SFML scrollable canvas" );
	sfml_scrollable_window->SetPosition( sf::Vector2f( 300.f, 200.f ) );

	// Create the Canvases.
	// Passing true in to Create() tells SFGUI
	// to create a depth buffer for the canvas.
	// This might be needed for your OpenGL rendering.
	// Specifying nothing defaults to no depth buffer.
	auto opengl_canvas = sfg::Canvas::Create( true );
	auto sfml_canvas = sfg::Canvas::Create();
	auto sfml_scrollable_canvas = sfg::Canvas::Create();

	// Create a pair of scrollbars.
	auto horizontal_scrollbar = sfg::Scrollbar::Create( sfg::Scrollbar::Orientation::HORIZONTAL );
	auto vertical_scrollbar = sfg::Scrollbar::Create( sfg::Scrollbar::Orientation::VERTICAL );

	// Create a table to put the scrollbars and scrollable canvas in.
	auto table = sfg::Table::Create();
	table->Attach( sfml_scrollable_canvas, sf::Rect<std::uint32_t>( { 0, 0 }, { 1, 1 } ), sfg::Table::FILL | sfg::Table::EXPAND, sfg::Table::FILL | sfg::Table::EXPAND );
	table->Attach( vertical_scrollbar, sf::Rect<std::uint32_t>( { 1, 0 }, { 1, 1 } ), 0, sfg::Table::FILL );
	table->Attach( horizontal_scrollbar, sf::Rect<std::uint32_t>( { 0, 1 }, { 1, 1 } ), sfg::Table::FILL, 0 );

	// Add the Canvases to the windows.
	opengl_window->Add( opengl_canvas );
	sfml_window->Add( sfml_canvas );
	sfml_scrollable_window->Add( table );

	// Create an sf::Sprite for demonstration purposes.
	const sf::Texture texture( "data/sfgui.png" );
	const sf::Sprite sprite( texture );

	// Create an sf::RectangleShape for demonstration purposes.
	sf::RectangleShape rectangle_shape( sf::Vector2f( 218.f * 20, 84.f * 20 ) );
	rectangle_shape.setTexture( &texture );

	const static auto scrollable_canvas_size = 300.f;