godot/scene/gui/check_button.cpp

/*************************************************************************/
/*  check_button.cpp                                                     */
/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
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#include "check_button.h"

#include "core/print_string.h"
#include "servers/rendering_server.h"

Size2 CheckButton::get_icon_size() const {
	Ref<Texture2D> on = Control::get_theme_icon(is_disabled() ? "on_disabled" : "on");
	Ref<Texture2D> off = Control::get_theme_icon(is_disabled() ? "off_disabled" : "off");
	Size2 tex_size = Size2(0, 0);
	if (!on.is_null()) {
		tex_size = Size2(on->get_width(), on->get_height());
	}
	if (!off.is_null()) {
		tex_size = Size2(MAX(tex_size.width, off->get_width()), MAX(tex_size.height, off->get_height()));
	}

	return tex_size;
}

Size2 CheckButton::get_minimum_size() const {
	Size2 minsize = Button::get_minimum_size();
	Size2 tex_size = get_icon_size();
	minsize.width += tex_size.width;
	if (get_text().length() > 0) {
		minsize.width += get_theme_constant("hseparation");
	}
	Ref<StyleBox> sb = get_theme_stylebox("normal");
	minsize.height = MAX(minsize.height, tex_size.height + sb->get_margin(MARGIN_TOP) + sb->get_margin(MARGIN_BOTTOM));

	return minsize;
}

void CheckButton::_notification(int p_what) {
	if (p_what == NOTIFICATION_THEME_CHANGED) {
		_set_internal_margin(MARGIN_RIGHT, get_icon_size().width);
	} else if (p_what == NOTIFICATION_DRAW) {
		RID ci = get_canvas_item();

		Ref<Texture2D> on = Control::get_theme_icon(is_disabled() ? "on_disabled" : "on");
		Ref<Texture2D> off = Control::get_theme_icon(is_disabled() ? "off_disabled" : "off");

		Ref<StyleBox> sb = get_theme_stylebox("normal");
		Vector2 ofs;
		Size2 tex_size = get_icon_size();

		ofs.x = get_size().width - (tex_size.width + sb->get_margin(MARGIN_RIGHT));
		ofs.y = (get_size().height - tex_size.height) / 2 + get_theme_constant("check_vadjust");

		if (is_pressed()) {
			on->draw(ci, ofs);
		} else {
			off->draw(ci, ofs);
		}
	}
}

CheckButton::CheckButton() {
	set_toggle_mode(true);
	set_text_align(ALIGN_LEFT);

	_set_internal_margin(MARGIN_RIGHT, get_icon_size().width);
}

CheckButton::~CheckButton() {
}