virtualx-engine/scene/gui/button.cpp
Hugo Locurcio a06f82ca4d
Add optional constructor arguments to more Control nodes
This can be used to make editor code more compact.
However, as of writing, these constructor arguments cannot be used
from the scripting API.

This was already provided for Label and CheckBox, but it was missing
for other Control nodes where it made sense to provide a default value.
2022-03-04 09:48:41 +01:00

592 lines
20 KiB
C++

/*************************************************************************/
/* button.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "button.h"
#include "core/string/translation.h"
#include "servers/rendering_server.h"
Size2 Button::get_minimum_size() const {
Size2 minsize = text_buf->get_size();
if (clip_text) {
minsize.width = 0;
}
if (!expand_icon) {
Ref<Texture2D> _icon;
if (icon.is_null() && has_theme_icon(SNAME("icon"))) {
_icon = Control::get_theme_icon(SNAME("icon"));
} else {
_icon = icon;
}
if (!_icon.is_null()) {
minsize.height = MAX(minsize.height, _icon->get_height());
if (icon_alignment != HORIZONTAL_ALIGNMENT_CENTER) {
minsize.width += _icon->get_width();
if (!xl_text.is_empty()) {
minsize.width += get_theme_constant(SNAME("hseparation"));
}
} else {
minsize.width = MAX(minsize.width, _icon->get_width());
}
}
}
Ref<Font> font = get_theme_font(SNAME("font"));
float font_height = font->get_height(get_theme_font_size(SNAME("font_size")));
minsize.height = MAX(font_height, minsize.height);
return get_theme_stylebox(SNAME("normal"))->get_minimum_size() + minsize;
}
void Button::_set_internal_margin(Side p_side, float p_value) {
_internal_margin[p_side] = p_value;
}
void Button::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
update();
} break;
case NOTIFICATION_TRANSLATION_CHANGED: {
xl_text = atr(text);
_shape();
update_minimum_size();
update();
} break;
case NOTIFICATION_THEME_CHANGED: {
_shape();
update_minimum_size();
update();
} break;
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Size2 size = get_size();
Color color;
Color color_icon(1, 1, 1, 1);
Ref<StyleBox> style = get_theme_stylebox(SNAME("normal"));
bool rtl = is_layout_rtl();
switch (get_draw_mode()) {
case DRAW_NORMAL: {
if (rtl && has_theme_stylebox(SNAME("normal_mirrored"))) {
style = get_theme_stylebox(SNAME("normal_mirrored"));
} else {
style = get_theme_stylebox(SNAME("normal"));
}
if (!flat) {
style->draw(ci, Rect2(Point2(0, 0), size));
}
// Focus colors only take precedence over normal state.
if (has_focus()) {
color = get_theme_color(SNAME("font_focus_color"));
if (has_theme_color(SNAME("icon_focus_color"))) {
color_icon = get_theme_color(SNAME("icon_focus_color"));
}
} else {
color = get_theme_color(SNAME("font_color"));
if (has_theme_color(SNAME("icon_normal_color"))) {
color_icon = get_theme_color(SNAME("icon_normal_color"));
}
}
} break;
case DRAW_HOVER_PRESSED: {
// Edge case for CheckButton and CheckBox.
if (has_theme_stylebox("hover_pressed")) {
if (rtl && has_theme_stylebox(SNAME("hover_pressed_mirrored"))) {
style = get_theme_stylebox(SNAME("hover_pressed_mirrored"));
} else {
style = get_theme_stylebox(SNAME("hover_pressed"));
}
if (!flat) {
style->draw(ci, Rect2(Point2(0, 0), size));
}
if (has_theme_color(SNAME("font_hover_pressed_color"))) {
color = get_theme_color(SNAME("font_hover_pressed_color"));
}
if (has_theme_color(SNAME("icon_hover_pressed_color"))) {
color_icon = get_theme_color(SNAME("icon_hover_pressed_color"));
}
break;
}
[[fallthrough]];
}
case DRAW_PRESSED: {
if (rtl && has_theme_stylebox(SNAME("pressed_mirrored"))) {
style = get_theme_stylebox(SNAME("pressed_mirrored"));
} else {
style = get_theme_stylebox(SNAME("pressed"));
}
if (!flat) {
style->draw(ci, Rect2(Point2(0, 0), size));
}
if (has_theme_color(SNAME("font_pressed_color"))) {
color = get_theme_color(SNAME("font_pressed_color"));
} else {
color = get_theme_color(SNAME("font_color"));
}
if (has_theme_color(SNAME("icon_pressed_color"))) {
color_icon = get_theme_color(SNAME("icon_pressed_color"));
}
} break;
case DRAW_HOVER: {
if (rtl && has_theme_stylebox(SNAME("hover_mirrored"))) {
style = get_theme_stylebox(SNAME("hover_mirrored"));
} else {
style = get_theme_stylebox(SNAME("hover"));
}
if (!flat) {
style->draw(ci, Rect2(Point2(0, 0), size));
}
color = get_theme_color(SNAME("font_hover_color"));
if (has_theme_color(SNAME("icon_hover_color"))) {
color_icon = get_theme_color(SNAME("icon_hover_color"));
}
} break;
case DRAW_DISABLED: {
if (rtl && has_theme_stylebox(SNAME("disabled_mirrored"))) {
style = get_theme_stylebox(SNAME("disabled_mirrored"));
} else {
style = get_theme_stylebox(SNAME("disabled"));
}
if (!flat) {
style->draw(ci, Rect2(Point2(0, 0), size));
}
color = get_theme_color(SNAME("font_disabled_color"));
if (has_theme_color(SNAME("icon_disabled_color"))) {
color_icon = get_theme_color(SNAME("icon_disabled_color"));
} else {
color_icon.a = 0.4;
}
} break;
}
if (has_focus()) {
Ref<StyleBox> style2 = get_theme_stylebox(SNAME("focus"));
style2->draw(ci, Rect2(Point2(), size));
}
Ref<Texture2D> _icon;
if (icon.is_null() && has_theme_icon(SNAME("icon"))) {
_icon = Control::get_theme_icon(SNAME("icon"));
} else {
_icon = icon;
}
Rect2 icon_region = Rect2();
HorizontalAlignment icon_align_rtl_checked = icon_alignment;
HorizontalAlignment align_rtl_checked = alignment;
// Swap icon and text alignment sides if right-to-left layout is set.
if (rtl) {
if (icon_alignment == HORIZONTAL_ALIGNMENT_RIGHT) {
icon_align_rtl_checked = HORIZONTAL_ALIGNMENT_LEFT;
} else if (icon_alignment == HORIZONTAL_ALIGNMENT_LEFT) {
icon_align_rtl_checked = HORIZONTAL_ALIGNMENT_RIGHT;
}
if (alignment == HORIZONTAL_ALIGNMENT_RIGHT) {
align_rtl_checked = HORIZONTAL_ALIGNMENT_LEFT;
} else if (alignment == HORIZONTAL_ALIGNMENT_LEFT) {
align_rtl_checked = HORIZONTAL_ALIGNMENT_RIGHT;
}
}
if (!_icon.is_null()) {
int valign = size.height - style->get_minimum_size().y;
float icon_ofs_region = 0.0;
Point2 style_offset;
Size2 icon_size = _icon->get_size();
if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_LEFT) {
style_offset.x = style->get_margin(SIDE_LEFT);
if (_internal_margin[SIDE_LEFT] > 0) {
icon_ofs_region = _internal_margin[SIDE_LEFT] + get_theme_constant(SNAME("hseparation"));
}
} else if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_CENTER) {
style_offset.x = 0.0;
} else if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_RIGHT) {
style_offset.x = -style->get_margin(SIDE_RIGHT);
if (_internal_margin[SIDE_RIGHT] > 0) {
icon_ofs_region = -_internal_margin[SIDE_RIGHT] - get_theme_constant(SNAME("hseparation"));
}
}
style_offset.y = style->get_margin(SIDE_TOP);
if (expand_icon) {
Size2 _size = get_size() - style->get_offset() * 2;
_size.width -= get_theme_constant(SNAME("hseparation")) + icon_ofs_region;
if (!clip_text && icon_align_rtl_checked != HORIZONTAL_ALIGNMENT_CENTER) {
_size.width -= text_buf->get_size().width;
}
float icon_width = _icon->get_width() * _size.height / _icon->get_height();
float icon_height = _size.height;
if (icon_width > _size.width) {
icon_width = _size.width;
icon_height = _icon->get_height() * icon_width / _icon->get_width();
}
icon_size = Size2(icon_width, icon_height);
}
if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_LEFT) {
icon_region = Rect2(style_offset + Point2(icon_ofs_region, Math::floor((valign - icon_size.y) * 0.5)), icon_size);
} else if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_CENTER) {
icon_region = Rect2(style_offset + Point2(icon_ofs_region + Math::floor((size.x - icon_size.x) * 0.5), Math::floor((valign - icon_size.y) * 0.5)), icon_size);
} else {
icon_region = Rect2(style_offset + Point2(icon_ofs_region + size.x - icon_size.x, Math::floor((valign - icon_size.y) * 0.5)), icon_size);
}
if (icon_region.size.width > 0) {
draw_texture_rect_region(_icon, icon_region, Rect2(Point2(), _icon->get_size()), color_icon);
}
}
Point2 icon_ofs = !_icon.is_null() ? Point2(icon_region.size.width + get_theme_constant(SNAME("hseparation")), 0) : Point2();
if (align_rtl_checked == HORIZONTAL_ALIGNMENT_CENTER && icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_CENTER) {
icon_ofs.x = 0.0;
}
int text_clip = size.width - style->get_minimum_size().width - icon_ofs.width;
text_buf->set_width(clip_text ? text_clip : -1);
int text_width = clip_text ? MIN(text_clip, text_buf->get_size().x) : text_buf->get_size().x;
if (_internal_margin[SIDE_LEFT] > 0) {
text_clip -= _internal_margin[SIDE_LEFT] + get_theme_constant(SNAME("hseparation"));
}
if (_internal_margin[SIDE_RIGHT] > 0) {
text_clip -= _internal_margin[SIDE_RIGHT] + get_theme_constant(SNAME("hseparation"));
}
Point2 text_ofs = (size - style->get_minimum_size() - icon_ofs - text_buf->get_size() - Point2(_internal_margin[SIDE_RIGHT] - _internal_margin[SIDE_LEFT], 0)) / 2.0;
text_buf->set_alignment(align_rtl_checked);
text_buf->set_width(text_width);
switch (align_rtl_checked) {
case HORIZONTAL_ALIGNMENT_FILL:
case HORIZONTAL_ALIGNMENT_LEFT: {
if (icon_align_rtl_checked != HORIZONTAL_ALIGNMENT_LEFT) {
icon_ofs.x = 0.0;
}
if (_internal_margin[SIDE_LEFT] > 0) {
text_ofs.x = style->get_margin(SIDE_LEFT) + icon_ofs.x + _internal_margin[SIDE_LEFT] + get_theme_constant(SNAME("hseparation"));
} else {
text_ofs.x = style->get_margin(SIDE_LEFT) + icon_ofs.x;
}
text_ofs.y += style->get_offset().y;
} break;
case HORIZONTAL_ALIGNMENT_CENTER: {
if (text_ofs.x < 0) {
text_ofs.x = 0;
}
if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_LEFT) {
text_ofs += icon_ofs;
}
text_ofs += style->get_offset();
} break;
case HORIZONTAL_ALIGNMENT_RIGHT: {
if (_internal_margin[SIDE_RIGHT] > 0) {
text_ofs.x = size.x - style->get_margin(SIDE_RIGHT) - text_width - _internal_margin[SIDE_RIGHT] - get_theme_constant(SNAME("hseparation"));
} else {
text_ofs.x = size.x - style->get_margin(SIDE_RIGHT) - text_width;
}
text_ofs.y += style->get_offset().y;
if (icon_align_rtl_checked == HORIZONTAL_ALIGNMENT_RIGHT) {
text_ofs.x -= icon_ofs.x;
}
} break;
}
Color font_outline_color = get_theme_color(SNAME("font_outline_color"));
int outline_size = get_theme_constant(SNAME("outline_size"));
if (outline_size > 0 && font_outline_color.a > 0) {
text_buf->draw_outline(ci, text_ofs, outline_size, font_outline_color);
}
text_buf->draw(ci, text_ofs, color);
} break;
}
}
void Button::_shape() {
Ref<Font> font = get_theme_font(SNAME("font"));
int font_size = get_theme_font_size(SNAME("font_size"));
text_buf->clear();
if (text_direction == Control::TEXT_DIRECTION_INHERITED) {
text_buf->set_direction(is_layout_rtl() ? TextServer::DIRECTION_RTL : TextServer::DIRECTION_LTR);
} else {
text_buf->set_direction((TextServer::Direction)text_direction);
}
text_buf->add_string(xl_text, font, font_size, opentype_features, (!language.is_empty()) ? language : TranslationServer::get_singleton()->get_tool_locale());
}
void Button::set_text(const String &p_text) {
if (text != p_text) {
text = p_text;
xl_text = atr(text);
_shape();
update();
update_minimum_size();
}
}
String Button::get_text() const {
return text;
}
void Button::set_text_direction(Control::TextDirection p_text_direction) {
ERR_FAIL_COND((int)p_text_direction < -1 || (int)p_text_direction > 3);
if (text_direction != p_text_direction) {
text_direction = p_text_direction;
_shape();
update();
}
}
Control::TextDirection Button::get_text_direction() const {
return text_direction;
}
void Button::clear_opentype_features() {
opentype_features.clear();
_shape();
update();
}
void Button::set_opentype_feature(const String &p_name, int p_value) {
int32_t tag = TS->name_to_tag(p_name);
if (!opentype_features.has(tag) || (int)opentype_features[tag] != p_value) {
opentype_features[tag] = p_value;
_shape();
update();
}
}
int Button::get_opentype_feature(const String &p_name) const {
int32_t tag = TS->name_to_tag(p_name);
if (!opentype_features.has(tag)) {
return -1;
}
return opentype_features[tag];
}
void Button::set_language(const String &p_language) {
if (language != p_language) {
language = p_language;
_shape();
update();
}
}
String Button::get_language() const {
return language;
}
void Button::set_icon(const Ref<Texture2D> &p_icon) {
if (icon != p_icon) {
icon = p_icon;
update();
update_minimum_size();
}
}
Ref<Texture2D> Button::get_icon() const {
return icon;
}
void Button::set_expand_icon(bool p_enabled) {
if (expand_icon != p_enabled) {
expand_icon = p_enabled;
update();
update_minimum_size();
}
}
bool Button::is_expand_icon() const {
return expand_icon;
}
void Button::set_flat(bool p_enabled) {
if (flat != p_enabled) {
flat = p_enabled;
update();
}
}
bool Button::is_flat() const {
return flat;
}
void Button::set_clip_text(bool p_enabled) {
if (clip_text != p_enabled) {
clip_text = p_enabled;
update();
update_minimum_size();
}
}
bool Button::get_clip_text() const {
return clip_text;
}
void Button::set_text_alignment(HorizontalAlignment p_alignment) {
if (alignment != p_alignment) {
alignment = p_alignment;
update();
}
}
HorizontalAlignment Button::get_text_alignment() const {
return alignment;
}
void Button::set_icon_alignment(HorizontalAlignment p_alignment) {
icon_alignment = p_alignment;
update_minimum_size();
update();
}
HorizontalAlignment Button::get_icon_alignment() const {
return icon_alignment;
}
bool Button::_set(const StringName &p_name, const Variant &p_value) {
String str = p_name;
if (str.begins_with("opentype_features/")) {
String name = str.get_slicec('/', 1);
int32_t tag = TS->name_to_tag(name);
int value = p_value;
if (value == -1) {
if (opentype_features.has(tag)) {
opentype_features.erase(tag);
_shape();
update();
}
} else {
if (!opentype_features.has(tag) || (int)opentype_features[tag] != value) {
opentype_features[tag] = value;
_shape();
update();
}
}
notify_property_list_changed();
return true;
}
return false;
}
bool Button::_get(const StringName &p_name, Variant &r_ret) const {
String str = p_name;
if (str.begins_with("opentype_features/")) {
String name = str.get_slicec('/', 1);
int32_t tag = TS->name_to_tag(name);
if (opentype_features.has(tag)) {
r_ret = opentype_features[tag];
return true;
} else {
r_ret = -1;
return true;
}
}
return false;
}
void Button::_get_property_list(List<PropertyInfo> *p_list) const {
for (const Variant *ftr = opentype_features.next(nullptr); ftr != nullptr; ftr = opentype_features.next(ftr)) {
String name = TS->tag_to_name(*ftr);
p_list->push_back(PropertyInfo(Variant::INT, "opentype_features/" + name));
}
p_list->push_back(PropertyInfo(Variant::NIL, "opentype_features/_new", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR));
}
void Button::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_text", "text"), &Button::set_text);
ClassDB::bind_method(D_METHOD("get_text"), &Button::get_text);
ClassDB::bind_method(D_METHOD("set_text_direction", "direction"), &Button::set_text_direction);
ClassDB::bind_method(D_METHOD("get_text_direction"), &Button::get_text_direction);
ClassDB::bind_method(D_METHOD("set_opentype_feature", "tag", "value"), &Button::set_opentype_feature);
ClassDB::bind_method(D_METHOD("get_opentype_feature", "tag"), &Button::get_opentype_feature);
ClassDB::bind_method(D_METHOD("clear_opentype_features"), &Button::clear_opentype_features);
ClassDB::bind_method(D_METHOD("set_language", "language"), &Button::set_language);
ClassDB::bind_method(D_METHOD("get_language"), &Button::get_language);
ClassDB::bind_method(D_METHOD("set_button_icon", "texture"), &Button::set_icon);
ClassDB::bind_method(D_METHOD("get_button_icon"), &Button::get_icon);
ClassDB::bind_method(D_METHOD("set_flat", "enabled"), &Button::set_flat);
ClassDB::bind_method(D_METHOD("is_flat"), &Button::is_flat);
ClassDB::bind_method(D_METHOD("set_clip_text", "enabled"), &Button::set_clip_text);
ClassDB::bind_method(D_METHOD("get_clip_text"), &Button::get_clip_text);
ClassDB::bind_method(D_METHOD("set_text_alignment", "alignment"), &Button::set_text_alignment);
ClassDB::bind_method(D_METHOD("get_text_alignment"), &Button::get_text_alignment);
ClassDB::bind_method(D_METHOD("set_icon_alignment", "icon_alignment"), &Button::set_icon_alignment);
ClassDB::bind_method(D_METHOD("get_icon_alignment"), &Button::get_icon_alignment);
ClassDB::bind_method(D_METHOD("set_expand_icon", "enabled"), &Button::set_expand_icon);
ClassDB::bind_method(D_METHOD("is_expand_icon"), &Button::is_expand_icon);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "text", PROPERTY_HINT_MULTILINE_TEXT, "", PROPERTY_USAGE_DEFAULT_INTL), "set_text", "get_text");
ADD_PROPERTY(PropertyInfo(Variant::INT, "text_direction", PROPERTY_HINT_ENUM, "Auto,Left-to-Right,Right-to-Left,Inherited"), "set_text_direction", "get_text_direction");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "language", PROPERTY_HINT_LOCALE_ID, ""), "set_language", "get_language");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "icon", PROPERTY_HINT_RESOURCE_TYPE, "Texture2D"), "set_button_icon", "get_button_icon");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "flat"), "set_flat", "is_flat");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "clip_text"), "set_clip_text", "get_clip_text");
ADD_PROPERTY(PropertyInfo(Variant::INT, "alignment", PROPERTY_HINT_ENUM, "Left,Center,Right"), "set_text_alignment", "get_text_alignment");
ADD_PROPERTY(PropertyInfo(Variant::INT, "icon_alignment", PROPERTY_HINT_ENUM, "Left,Center,Right"), "set_icon_alignment", "get_icon_alignment");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "expand_icon"), "set_expand_icon", "is_expand_icon");
}
Button::Button(const String &p_text) {
text_buf.instantiate();
text_buf->set_flags(TextServer::BREAK_MANDATORY);
set_mouse_filter(MOUSE_FILTER_STOP);
set_text(p_text);
}
Button::~Button() {
}