godot/scene/gui/link_button.cpp

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/*************************************************************************/
/* link_button.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "link_button.h"
void LinkButton::set_text(const String &p_text) {
text = p_text;
update();
minimum_size_changed();
}
String LinkButton::get_text() const {
return text;
}
void LinkButton::set_underline_mode(UnderlineMode p_underline_mode) {
underline_mode = p_underline_mode;
update();
}
LinkButton::UnderlineMode LinkButton::get_underline_mode() const {
return underline_mode;
}
Size2 LinkButton::get_minimum_size() const {
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return get_theme_font("font")->get_string_size(text);
}
void LinkButton::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Size2 size = get_size();
Color color;
bool do_underline = false;
switch (get_draw_mode()) {
case DRAW_NORMAL: {
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color = get_theme_color("font_color");
do_underline = underline_mode == UNDERLINE_MODE_ALWAYS;
} break;
case DRAW_HOVER_PRESSED:
case DRAW_PRESSED: {
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if (has_theme_color("font_color_pressed"))
color = get_theme_color("font_color_pressed");
else
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color = get_theme_color("font_color");
do_underline = underline_mode != UNDERLINE_MODE_NEVER;
} break;
case DRAW_HOVER: {
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color = get_theme_color("font_color_hover");
do_underline = underline_mode != UNDERLINE_MODE_NEVER;
} break;
case DRAW_DISABLED: {
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color = get_theme_color("font_color_disabled");
do_underline = underline_mode == UNDERLINE_MODE_ALWAYS;
} break;
}
if (has_focus()) {
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Ref<StyleBox> style = get_theme_stylebox("focus");
style->draw(ci, Rect2(Point2(), size));
}
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Ref<Font> font = get_theme_font("font");
draw_string(font, Vector2(0, font->get_ascent()), text, color);
if (do_underline) {
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int underline_spacing = get_theme_constant("underline_spacing");
int width = font->get_string_size(text).width;
int y = font->get_ascent() + underline_spacing;
draw_line(Vector2(0, y), Vector2(width, y), color);
}
} break;
}
}
void LinkButton::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_text", "text"), &LinkButton::set_text);
ClassDB::bind_method(D_METHOD("get_text"), &LinkButton::get_text);
ClassDB::bind_method(D_METHOD("set_underline_mode", "underline_mode"), &LinkButton::set_underline_mode);
ClassDB::bind_method(D_METHOD("get_underline_mode"), &LinkButton::get_underline_mode);
BIND_ENUM_CONSTANT(UNDERLINE_MODE_ALWAYS);
BIND_ENUM_CONSTANT(UNDERLINE_MODE_ON_HOVER);
BIND_ENUM_CONSTANT(UNDERLINE_MODE_NEVER);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "text"), "set_text", "get_text");
ADD_PROPERTY(PropertyInfo(Variant::INT, "underline", PROPERTY_HINT_ENUM, "Always,On Hover,Never"), "set_underline_mode", "get_underline_mode");
}
LinkButton::LinkButton() {
underline_mode = UNDERLINE_MODE_ALWAYS;
set_enabled_focus_mode(FOCUS_NONE);
set_default_cursor_shape(CURSOR_POINTING_HAND);
}