Function main

examples/Range.cpp:10–138

#include <sstream>

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

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

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

	// Create our main SFGUI window
	auto window = sfg::Window::Create();
	window->SetTitle( "Title" );

	// Create our box.
	auto box = sfg::Box::Create( sfg::Box::Orientation::HORIZONTAL );

	// Create a label.
	auto label = sfg::Label::Create();
	label->SetText( "20" );

	// Scale and Scrollbar widgets are subclasses of the Range class.
	// They have a common data representation object known as an
	// Adjustment. The Adjustment that each range widget is bound to
	// determines it's current state (where the slider is, what max
	// and min values are, how much to scroll per step etc.). Because
	// range widgets share this common data object they can also be
	// linked together by a common Adjustment instance. An Adjustment
	// is created automatically for you when you create a range widget.

	// Create the scale.
	// We want a horizontal scale.
	auto scale = sfg::Scale::Create( sfg::Scale::Orientation::HORIZONTAL );

	// Create the scrollbar.
	// We want a vertical scrollbar.
	auto scrollbar = sfg::Scrollbar::Create( sfg::Scrollbar::Orientation::VERTICAL );

	// We can link both widgets together by their adjustments.
	auto adjustment = scrollbar->GetAdjustment();
	scale->SetAdjustment( adjustment );

	// Tune the adjustment parameters.
	adjustment->SetLower( 20.f );
	adjustment->SetUpper( 100.f );

	// How much it should change when clicked on the stepper.
	adjustment->SetMinorStep( 3.f );

	// How much it should change when clicked on the trough.
	adjustment->SetMajorStep( 12.f );

	// CAUTION:
	// Normally you would only set the page size for scrollbar adjustments.
	// For demonstration purposes we do this for our scale widget too.
	// If page size isn't 0 a scale widget won't be able to be set to it's
	// maximum value. This is in fact also true for scrollbars, however
	// because they are used to scroll the page size must be subtracted from