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virtualx-engine/scene/gui/tabs.cpp
Rémi Verschelde 1426cd3b3a
One Copyright Update to rule them all 
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.

It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).

We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).

Also fixed "cf." Frenchism - it's meant as "refer to / see".

Backported from #70885.
2023-01-10 15:26:54 +01:00

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/**************************************************************************/
/* tabs.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "tabs.h"
#include "core/message_queue.h"
#include "scene/gui/box_container.h"
#include "scene/gui/label.h"
#include "scene/gui/texture_rect.h"
Size2 Tabs::get_minimum_size() const {
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
Ref<Font> font = get_font("font");
Size2 ms(0, MAX(MAX(tab_bg->get_minimum_size().height, tab_fg->get_minimum_size().height), tab_disabled->get_minimum_size().height) + font->get_height());
for (int i = 0; i < tabs.size(); i++) {
Ref<Texture> tex = tabs[i].icon;
if (tex.is_valid()) {
ms.height = MAX(ms.height, tex->get_size().height);
if (tabs[i].text != "") {
ms.width += get_constant("hseparation");
}
}
ms.width += Math::ceil(font->get_string_size(tabs[i].xl_text).width);
if (tabs[i].disabled) {
ms.width += tab_disabled->get_minimum_size().width;
} else if (current == i) {
ms.width += tab_fg->get_minimum_size().width;
} else {
ms.width += tab_bg->get_minimum_size().width;
}
if (tabs[i].right_button.is_valid()) {
Ref<Texture> rb = tabs[i].right_button;
Size2 bms = rb->get_size();
bms.width += get_constant("hseparation");
ms.width += bms.width;
ms.height = MAX(bms.height + tab_bg->get_minimum_size().height, ms.height);
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<Texture> cb = get_icon("close");
Size2 bms = cb->get_size();
bms.width += get_constant("hseparation");
ms.width += bms.width;
ms.height = MAX(bms.height + tab_bg->get_minimum_size().height, ms.height);
}
}
ms.width = 0; // TODO: should make this optional.
return ms;
}
void Tabs::_gui_input(const Ref<InputEvent> &p_event) {
ERR_FAIL_COND(p_event.is_null());
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid()) {
Point2 pos = mm->get_position();
if (buttons_visible) {
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
if (pos.x > limit + decr->get_width()) {
if (highlight_arrow != 1) {
highlight_arrow = 1;
update();
}
} else if (pos.x > limit) {
if (highlight_arrow != 0) {
highlight_arrow = 0;
update();
}
} else if (highlight_arrow != -1) {
highlight_arrow = -1;
update();
}
}
_update_hover();
return;
}
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid()) {
if (mb->is_pressed() && mb->get_button_index() == BUTTON_WHEEL_UP && !mb->get_command()) {
if (scrolling_enabled && buttons_visible) {
if (offset > 0) {
offset--;
update();
}
}
}
if (mb->is_pressed() && mb->get_button_index() == BUTTON_WHEEL_DOWN && !mb->get_command()) {
if (scrolling_enabled && buttons_visible) {
if (missing_right) {
offset++;
_ensure_no_over_offset(); // Avoid overreaching when scrolling fast.
update();
}
}
}
if (rb_pressing && !mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT) {
if (rb_hover != -1) {
// Right tab button pressed.
emit_signal("right_button_pressed", rb_hover);
}
rb_pressing = false;
update();
}
if (cb_pressing && !mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT) {
if (cb_hover != -1) {
// Close button pressed.
emit_signal("tab_close", cb_hover);
}
cb_pressing = false;
update();
}
if (mb->is_pressed() && (mb->get_button_index() == BUTTON_LEFT || (select_with_rmb && mb->get_button_index() == BUTTON_RIGHT))) {
// Clicks.
Point2 pos(mb->get_position().x, mb->get_position().y);
if (buttons_visible) {
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
if (pos.x > limit + decr->get_width()) {
if (missing_right) {
offset++;
update();
}
return;
} else if (pos.x > limit) {
if (offset > 0) {
offset--;
update();
}
return;
}
}
if (tabs.empty()) {
// Return early if there are no actual tabs to handle input for.
return;
}
int found = -1;
for (int i = offset; i <= max_drawn_tab; i++) {
if (tabs[i].rb_rect.has_point(pos)) {
rb_pressing = true;
update();
return;
}
if (tabs[i].cb_rect.has_point(pos) && (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current))) {
cb_pressing = true;
update();
return;
}
if (pos.x >= tabs[i].ofs_cache && pos.x < tabs[i].ofs_cache + tabs[i].size_cache) {
if (!tabs[i].disabled) {
found = i;
}
break;
}
}
if (found != -1) {
set_current_tab(found);
emit_signal("tab_clicked", found);
}
}
}
}
void Tabs::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_TRANSLATION_CHANGED: {
for (int i = 0; i < tabs.size(); ++i) {
tabs.write[i].xl_text = tr(tabs[i].text);
}
minimum_size_changed();
update();
} break;
case NOTIFICATION_RESIZED: {
_update_cache();
_ensure_no_over_offset();
ensure_tab_visible(current);
} break;
case NOTIFICATION_DRAW: {
_update_cache();
RID ci = get_canvas_item();
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
Ref<Font> font = get_font("font");
Color color_fg = get_color("font_color_fg");
Color color_bg = get_color("font_color_bg");
Color color_disabled = get_color("font_color_disabled");
Ref<Texture> close = get_icon("close");
int h = get_size().height;
int w = 0;
int mw = 0;
for (int i = 0; i < tabs.size(); i++) {
tabs.write[i].ofs_cache = mw;
mw += get_tab_width(i);
}
if (tab_align == ALIGN_CENTER) {
w = (get_size().width - mw) / 2;
} else if (tab_align == ALIGN_RIGHT) {
w = get_size().width - mw;
}
if (w < 0) {
w = 0;
}
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
Ref<Texture> incr_hl = get_icon("increment_highlight");
Ref<Texture> decr_hl = get_icon("decrement_highlight");
int limit = get_size().width - incr->get_size().width - decr->get_size().width;
missing_right = false;
for (int i = 0; i < tabs.size(); i++) {
if (i < offset) {
continue;
}
tabs.write[i].ofs_cache = w;
int lsize = tabs[i].size_cache;
Ref<StyleBox> sb;
Color col;
if (tabs[i].disabled) {
sb = tab_disabled;
col = color_disabled;
} else if (i == current) {
sb = tab_fg;
col = color_fg;
} else {
sb = tab_bg;
col = color_bg;
}
if (w + lsize > limit) {
max_drawn_tab = i - 1;
missing_right = true;
break;
} else {
max_drawn_tab = i;
}
Rect2 sb_rect = Rect2(w, 0, tabs[i].size_cache, h);
sb->draw(ci, sb_rect);
w += sb->get_margin(MARGIN_LEFT);
Size2i sb_ms = sb->get_minimum_size();
Ref<Texture> icon = tabs[i].icon;
if (icon.is_valid()) {
icon->draw(ci, Point2i(w, sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - icon->get_height()) / 2));
if (tabs[i].text != "") {
w += icon->get_width() + get_constant("hseparation");
}
}
font->draw(ci, Point2i(w, sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - font->get_height()) / 2 + font->get_ascent()), tabs[i].xl_text, col, tabs[i].size_text);
w += tabs[i].size_text;
if (tabs[i].right_button.is_valid()) {
Ref<StyleBox> style = get_stylebox("button");
Ref<Texture> rb = tabs[i].right_button;
w += get_constant("hseparation");
Rect2 rb_rect;
rb_rect.size = style->get_minimum_size() + rb->get_size();
rb_rect.position.x = w;
rb_rect.position.y = sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - (rb_rect.size.y)) / 2;
if (rb_hover == i) {
if (rb_pressing) {
get_stylebox("button_pressed")->draw(ci, rb_rect);
} else {
style->draw(ci, rb_rect);
}
}
rb->draw(ci, Point2i(w + style->get_margin(MARGIN_LEFT), rb_rect.position.y + style->get_margin(MARGIN_TOP)));
w += rb->get_width();
tabs.write[i].rb_rect = rb_rect;
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<StyleBox> style = get_stylebox("button");
Ref<Texture> cb = close;
w += get_constant("hseparation");
Rect2 cb_rect;
cb_rect.size = style->get_minimum_size() + cb->get_size();
cb_rect.position.x = w;
cb_rect.position.y = sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - (cb_rect.size.y)) / 2;
if (!tabs[i].disabled && cb_hover == i) {
if (cb_pressing) {
get_stylebox("button_pressed")->draw(ci, cb_rect);
} else {
style->draw(ci, cb_rect);
}
}
cb->draw(ci, Point2i(w + style->get_margin(MARGIN_LEFT), cb_rect.position.y + style->get_margin(MARGIN_TOP)));
w += cb->get_width();
tabs.write[i].cb_rect = cb_rect;
}
w += sb->get_margin(MARGIN_RIGHT);
}
if (offset > 0 || missing_right) {
int vofs = (get_size().height - incr->get_size().height) / 2;
if (offset > 0) {
draw_texture(highlight_arrow == 0 ? decr_hl : decr, Point2(limit, vofs));
} else {
draw_texture(decr, Point2(limit, vofs), Color(1, 1, 1, 0.5));
}
if (missing_right) {
draw_texture(highlight_arrow == 1 ? incr_hl : incr, Point2(limit + decr->get_size().width, vofs));
} else {
draw_texture(incr, Point2(limit + decr->get_size().width, vofs), Color(1, 1, 1, 0.5));
}
buttons_visible = true;
} else {
buttons_visible = false;
}
} break;
}
}
int Tabs::get_tab_count() const {
return tabs.size();
}
void Tabs::set_current_tab(int p_current) {
if (current == p_current) {
return;
}
ERR_FAIL_INDEX(p_current, get_tab_count());
previous = current;
current = p_current;
_change_notify("current_tab");
_update_cache();
update();
emit_signal("tab_changed", p_current);
}
int Tabs::get_current_tab() const {
return current;
}
int Tabs::get_previous_tab() const {
return previous;
}
int Tabs::get_hovered_tab() const {
return hover;
}
int Tabs::get_tab_offset() const {
return offset;
}
bool Tabs::get_offset_buttons_visible() const {
return buttons_visible;
}
void Tabs::set_tab_title(int p_tab, const String &p_title) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].text = p_title;
tabs.write[p_tab].xl_text = tr(p_title);
update();
minimum_size_changed();
}
String Tabs::get_tab_title(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), "");
return tabs[p_tab].text;
}
void Tabs::set_tab_icon(int p_tab, const Ref<Texture> &p_icon) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].icon = p_icon;
update();
minimum_size_changed();
}
Ref<Texture> Tabs::get_tab_icon(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Ref<Texture>());
return tabs[p_tab].icon;
}
void Tabs::set_tab_disabled(int p_tab, bool p_disabled) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].disabled = p_disabled;
update();
}
bool Tabs::get_tab_disabled(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), false);
return tabs[p_tab].disabled;
}
void Tabs::set_tab_right_button(int p_tab, const Ref<Texture> &p_right_button) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].right_button = p_right_button;
_update_cache();
update();
minimum_size_changed();
}
Ref<Texture> Tabs::get_tab_right_button(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Ref<Texture>());
return tabs[p_tab].right_button;
}
void Tabs::_update_hover() {
if (!is_inside_tree()) {
return;
}
const Point2 &pos = get_local_mouse_position();
// Test hovering to display right or close button.
int hover_now = -1;
int hover_buttons = -1;
for (int i = 0; i < tabs.size(); i++) {
if (i < offset) {
continue;
}
Rect2 rect = get_tab_rect(i);
if (rect.has_point(pos)) {
hover_now = i;
}
if (tabs[i].rb_rect.has_point(pos)) {
rb_hover = i;
cb_hover = -1;
hover_buttons = i;
break;
} else if (!tabs[i].disabled && tabs[i].cb_rect.has_point(pos)) {
cb_hover = i;
rb_hover = -1;
hover_buttons = i;
break;
}
}
if (hover != hover_now) {
hover = hover_now;
emit_signal("tab_hover", hover);
}
if (hover_buttons == -1) { // No hover.
rb_hover = hover_buttons;
cb_hover = hover_buttons;
}
}
void Tabs::_update_cache() {
Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<Font> font = get_font("font");
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
int w = 0;
int mw = 0;
int size_fixed = 0;
int count_resize = 0;
for (int i = 0; i < tabs.size(); i++) {
tabs.write[i].ofs_cache = mw;
tabs.write[i].size_cache = get_tab_width(i);
tabs.write[i].size_text = Math::ceil(font->get_string_size(tabs[i].xl_text).width);
mw += tabs[i].size_cache;
if (tabs[i].size_cache <= min_width || i == current) {
size_fixed += tabs[i].size_cache;
} else {
count_resize++;
}
}
int m_width = min_width;
if (count_resize > 0) {
m_width = MAX((limit - size_fixed) / count_resize, min_width);
}
for (int i = 0; i < tabs.size(); i++) {
if (i < offset) {
continue;
}
Ref<StyleBox> sb;
if (tabs[i].disabled) {
sb = tab_disabled;
} else if (i == current) {
sb = tab_fg;
} else {
sb = tab_bg;
}
int lsize = tabs[i].size_cache;
int slen = tabs[i].size_text;
if (min_width > 0 && mw > limit && i != current) {
if (lsize > m_width) {
slen = m_width - (sb->get_margin(MARGIN_LEFT) + sb->get_margin(MARGIN_RIGHT));
if (tabs[i].icon.is_valid()) {
slen -= tabs[i].icon->get_width();
slen -= get_constant("hseparation");
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<Texture> cb = get_icon("close");
slen -= cb->get_width();
slen -= get_constant("hseparation");
}
slen = MAX(slen, 1);
lsize = m_width;
}
}
tabs.write[i].ofs_cache = w;
tabs.write[i].size_cache = lsize;
tabs.write[i].size_text = slen;
w += lsize;
}
}
void Tabs::_on_mouse_exited() {
rb_hover = -1;
cb_hover = -1;
hover = -1;
highlight_arrow = -1;
update();
}
void Tabs::add_tab(const String &p_str, const Ref<Texture> &p_icon) {
Tab t;
t.text = p_str;
t.xl_text = tr(p_str);
t.icon = p_icon;
t.disabled = false;
t.ofs_cache = 0;
t.size_cache = 0;
tabs.push_back(t);
_update_cache();
call_deferred("_update_hover");
update();
minimum_size_changed();
}
void Tabs::clear_tabs() {
tabs.clear();
current = 0;
previous = 0;
call_deferred("_update_hover");
update();
}
void Tabs::remove_tab(int p_idx) {
ERR_FAIL_INDEX(p_idx, tabs.size());
tabs.remove(p_idx);
if (current >= p_idx) {
current--;
}
_update_cache();
call_deferred("_update_hover");
update();
minimum_size_changed();
if (current < 0) {
current = 0;
previous = 0;
}
if (current >= tabs.size()) {
current = tabs.size() - 1;
}
_ensure_no_over_offset();
}
Variant Tabs::get_drag_data(const Point2 &p_point) {
if (!drag_to_rearrange_enabled) {
return Variant();
}
int tab_over = get_tab_idx_at_point(p_point);
if (tab_over < 0) {
return Variant();
}
HBoxContainer *drag_preview = memnew(HBoxContainer);
if (!tabs[tab_over].icon.is_null()) {
TextureRect *tf = memnew(TextureRect);
tf->set_texture(tabs[tab_over].icon);
drag_preview->add_child(tf);
}
Label *label = memnew(Label(tabs[tab_over].xl_text));
drag_preview->add_child(label);
if (!tabs[tab_over].right_button.is_null()) {
TextureRect *tf = memnew(TextureRect);
tf->set_texture(tabs[tab_over].right_button);
drag_preview->add_child(tf);
}
set_drag_preview(drag_preview);
Dictionary drag_data;
drag_data["type"] = "tab_element";
drag_data["tab_element"] = tab_over;
drag_data["from_path"] = get_path();
return drag_data;
}
bool Tabs::can_drop_data(const Point2 &p_point, const Variant &p_data) const {
if (!drag_to_rearrange_enabled) {
return false;
}
Dictionary d = p_data;
if (!d.has("type")) {
return false;
}
if (String(d["type"]) == "tab_element") {
NodePath from_path = d["from_path"];
NodePath to_path = get_path();
if (from_path == to_path) {
return true;
} else if (get_tabs_rearrange_group() != -1) {
// Drag and drop between other Tabs.
Node *from_node = get_node(from_path);
Tabs *from_tabs = Object::cast_to<Tabs>(from_node);
if (from_tabs && from_tabs->get_tabs_rearrange_group() == get_tabs_rearrange_group()) {
return true;
}
}
}
return false;
}
void Tabs::drop_data(const Point2 &p_point, const Variant &p_data) {
if (!drag_to_rearrange_enabled) {
return;
}
int hover_now = get_tab_idx_at_point(p_point);
Dictionary d = p_data;
if (!d.has("type")) {
return;
}
if (String(d["type"]) == "tab_element") {
int tab_from_id = d["tab_element"];
NodePath from_path = d["from_path"];
NodePath to_path = get_path();
if (from_path == to_path) {
if (hover_now < 0) {
hover_now = get_tab_count() - 1;
}
move_tab(tab_from_id, hover_now);
emit_signal("reposition_active_tab_request", hover_now);
set_current_tab(hover_now);
} else if (get_tabs_rearrange_group() != -1) {
// Drag and drop between Tabs.
Node *from_node = get_node(from_path);
Tabs *from_tabs = Object::cast_to<Tabs>(from_node);
if (from_tabs && from_tabs->get_tabs_rearrange_group() == get_tabs_rearrange_group()) {
if (tab_from_id >= from_tabs->get_tab_count()) {
return;
}
Tab moving_tab = from_tabs->tabs[tab_from_id];
if (hover_now < 0) {
hover_now = get_tab_count();
}
tabs.insert(hover_now, moving_tab);
from_tabs->remove_tab(tab_from_id);
set_current_tab(hover_now);
emit_signal("tab_changed", hover_now);
_update_cache();
}
}
}
update();
}
int Tabs::get_tab_idx_at_point(const Point2 &p_point) const {
int hover_now = -1;
for (int i = offset; i <= max_drawn_tab; i++) {
Rect2 rect = get_tab_rect(i);
if (rect.has_point(p_point)) {
hover_now = i;
}
}
return hover_now;
}
void Tabs::set_tab_align(TabAlign p_align) {
ERR_FAIL_INDEX(p_align, ALIGN_MAX);
tab_align = p_align;
update();
}
Tabs::TabAlign Tabs::get_tab_align() const {
return tab_align;
}
void Tabs::move_tab(int from, int to) {
if (from == to) {
return;
}
ERR_FAIL_INDEX(from, tabs.size());
ERR_FAIL_INDEX(to, tabs.size());
Tab tab_from = tabs[from];
tabs.remove(from);
tabs.insert(to, tab_from);
_update_cache();
update();
}
int Tabs::get_tab_width(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, tabs.size(), 0);
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
Ref<Font> font = get_font("font");
int x = 0;
Ref<Texture> tex = tabs[p_idx].icon;
if (tex.is_valid()) {
x += tex->get_width();
if (tabs[p_idx].text != "") {
x += get_constant("hseparation");
}
}
x += Math::ceil(font->get_string_size(tabs[p_idx].xl_text).width);
if (tabs[p_idx].disabled) {
x += tab_disabled->get_minimum_size().width;
} else if (current == p_idx) {
x += tab_fg->get_minimum_size().width;
} else {
x += tab_bg->get_minimum_size().width;
}
if (tabs[p_idx].right_button.is_valid()) {
Ref<Texture> rb = tabs[p_idx].right_button;
x += rb->get_width();
x += get_constant("hseparation");
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && p_idx == current)) {
Ref<Texture> cb = get_icon("close");
x += cb->get_width();
x += get_constant("hseparation");
}
return x;
}
void Tabs::_ensure_no_over_offset() {
if (!is_inside_tree()) {
return;
}
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
while (offset > 0) {
int total_w = 0;
for (int i = 0; i < tabs.size(); i++) {
if (i < offset - 1) {
continue;
}
total_w += tabs[i].size_cache;
}
if (total_w < limit) {
offset--;
update();
} else {
break;
}
}
}
void Tabs::ensure_tab_visible(int p_idx) {
if (!is_inside_tree()) {
return;
}
if (tabs.size() == 0) {
return;
}
ERR_FAIL_INDEX(p_idx, tabs.size());
if (p_idx == offset) {
return;
}
if (p_idx < offset) {
offset = p_idx;
update();
return;
}
int prev_offset = offset;
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
for (int i = offset; i <= p_idx; i++) {
if (tabs[i].ofs_cache + tabs[i].size_cache > limit) {
offset++;
}
}
if (prev_offset != offset) {
update();
}
}
Rect2 Tabs::get_tab_rect(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Rect2());
return Rect2(tabs[p_tab].ofs_cache, 0, tabs[p_tab].size_cache, get_size().height);
}
void Tabs::set_tab_close_display_policy(CloseButtonDisplayPolicy p_policy) {
ERR_FAIL_INDEX(p_policy, CLOSE_BUTTON_MAX);
cb_displaypolicy = p_policy;
update();
}
Tabs::CloseButtonDisplayPolicy Tabs::get_tab_close_display_policy() const {
return cb_displaypolicy;
}
void Tabs::set_min_width(int p_width) {
min_width = p_width;
}
void Tabs::set_scrolling_enabled(bool p_enabled) {
scrolling_enabled = p_enabled;
}
bool Tabs::get_scrolling_enabled() const {
return scrolling_enabled;
}
void Tabs::set_drag_to_rearrange_enabled(bool p_enabled) {
drag_to_rearrange_enabled = p_enabled;
}
bool Tabs::get_drag_to_rearrange_enabled() const {
return drag_to_rearrange_enabled;
}
void Tabs::set_tabs_rearrange_group(int p_group_id) {
tabs_rearrange_group = p_group_id;
}
int Tabs::get_tabs_rearrange_group() const {
return tabs_rearrange_group;
}
void Tabs::set_select_with_rmb(bool p_enabled) {
select_with_rmb = p_enabled;
}
bool Tabs::get_select_with_rmb() const {
return select_with_rmb;
}
void Tabs::_bind_methods() {
ClassDB::bind_method(D_METHOD("_gui_input"), &Tabs::_gui_input);
ClassDB::bind_method(D_METHOD("_update_hover"), &Tabs::_update_hover);
ClassDB::bind_method(D_METHOD("_on_mouse_exited"), &Tabs::_on_mouse_exited);
ClassDB::bind_method(D_METHOD("get_tab_count"), &Tabs::get_tab_count);
ClassDB::bind_method(D_METHOD("set_current_tab", "tab_idx"), &Tabs::set_current_tab);
ClassDB::bind_method(D_METHOD("get_current_tab"), &Tabs::get_current_tab);
ClassDB::bind_method(D_METHOD("get_previous_tab"), &Tabs::get_previous_tab);
ClassDB::bind_method(D_METHOD("set_tab_title", "tab_idx", "title"), &Tabs::set_tab_title);
ClassDB::bind_method(D_METHOD("get_tab_title", "tab_idx"), &Tabs::get_tab_title);
ClassDB::bind_method(D_METHOD("set_tab_icon", "tab_idx", "icon"), &Tabs::set_tab_icon);
ClassDB::bind_method(D_METHOD("get_tab_icon", "tab_idx"), &Tabs::get_tab_icon);
ClassDB::bind_method(D_METHOD("set_tab_button_icon", "tab_idx", "icon"), &Tabs::set_tab_right_button);
ClassDB::bind_method(D_METHOD("get_tab_button_icon", "tab_idx"), &Tabs::get_tab_right_button);
ClassDB::bind_method(D_METHOD("set_tab_disabled", "tab_idx", "disabled"), &Tabs::set_tab_disabled);
ClassDB::bind_method(D_METHOD("get_tab_disabled", "tab_idx"), &Tabs::get_tab_disabled);
ClassDB::bind_method(D_METHOD("remove_tab", "tab_idx"), &Tabs::remove_tab);
ClassDB::bind_method(D_METHOD("add_tab", "title", "icon"), &Tabs::add_tab, DEFVAL(""), DEFVAL(Ref<Texture>()));
ClassDB::bind_method(D_METHOD("set_tab_align", "align"), &Tabs::set_tab_align);
ClassDB::bind_method(D_METHOD("get_tab_align"), &Tabs::get_tab_align);
ClassDB::bind_method(D_METHOD("get_tab_offset"), &Tabs::get_tab_offset);
ClassDB::bind_method(D_METHOD("get_offset_buttons_visible"), &Tabs::get_offset_buttons_visible);
ClassDB::bind_method(D_METHOD("ensure_tab_visible", "idx"), &Tabs::ensure_tab_visible);
ClassDB::bind_method(D_METHOD("get_tab_rect", "tab_idx"), &Tabs::get_tab_rect);
ClassDB::bind_method(D_METHOD("move_tab", "from", "to"), &Tabs::move_tab);
ClassDB::bind_method(D_METHOD("set_tab_close_display_policy", "policy"), &Tabs::set_tab_close_display_policy);
ClassDB::bind_method(D_METHOD("get_tab_close_display_policy"), &Tabs::get_tab_close_display_policy);
ClassDB::bind_method(D_METHOD("set_scrolling_enabled", "enabled"), &Tabs::set_scrolling_enabled);
ClassDB::bind_method(D_METHOD("get_scrolling_enabled"), &Tabs::get_scrolling_enabled);
ClassDB::bind_method(D_METHOD("set_drag_to_rearrange_enabled", "enabled"), &Tabs::set_drag_to_rearrange_enabled);
ClassDB::bind_method(D_METHOD("get_drag_to_rearrange_enabled"), &Tabs::get_drag_to_rearrange_enabled);
ClassDB::bind_method(D_METHOD("set_tabs_rearrange_group", "group_id"), &Tabs::set_tabs_rearrange_group);
ClassDB::bind_method(D_METHOD("get_tabs_rearrange_group"), &Tabs::get_tabs_rearrange_group);
ClassDB::bind_method(D_METHOD("set_select_with_rmb", "enabled"), &Tabs::set_select_with_rmb);
ClassDB::bind_method(D_METHOD("get_select_with_rmb"), &Tabs::get_select_with_rmb);
ADD_SIGNAL(MethodInfo("tab_changed", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("right_button_pressed", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("tab_close", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("tab_hover", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("reposition_active_tab_request", PropertyInfo(Variant::INT, "idx_to")));
ADD_SIGNAL(MethodInfo("tab_clicked", PropertyInfo(Variant::INT, "tab")));
ADD_PROPERTY(PropertyInfo(Variant::INT, "current_tab", PROPERTY_HINT_RANGE, "-1,4096,1", PROPERTY_USAGE_EDITOR), "set_current_tab", "get_current_tab");
ADD_PROPERTY(PropertyInfo(Variant::INT, "tab_align", PROPERTY_HINT_ENUM, "Left,Center,Right"), "set_tab_align", "get_tab_align");
ADD_PROPERTY(PropertyInfo(Variant::INT, "tab_close_display_policy", PROPERTY_HINT_ENUM, "Show Never,Show Active Only,Show Always"), "set_tab_close_display_policy", "get_tab_close_display_policy");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scrolling_enabled"), "set_scrolling_enabled", "get_scrolling_enabled");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "drag_to_rearrange_enabled"), "set_drag_to_rearrange_enabled", "get_drag_to_rearrange_enabled");
BIND_ENUM_CONSTANT(ALIGN_LEFT);
BIND_ENUM_CONSTANT(ALIGN_CENTER);
BIND_ENUM_CONSTANT(ALIGN_RIGHT);
BIND_ENUM_CONSTANT(ALIGN_MAX);
BIND_ENUM_CONSTANT(CLOSE_BUTTON_SHOW_NEVER);
BIND_ENUM_CONSTANT(CLOSE_BUTTON_SHOW_ACTIVE_ONLY);
BIND_ENUM_CONSTANT(CLOSE_BUTTON_SHOW_ALWAYS);
BIND_ENUM_CONSTANT(CLOSE_BUTTON_MAX);
}
Tabs::Tabs() {
current = 0;
previous = 0;
tab_align = ALIGN_CENTER;
rb_hover = -1;
rb_pressing = false;
highlight_arrow = -1;
cb_hover = -1;
cb_pressing = false;
cb_displaypolicy = CLOSE_BUTTON_SHOW_NEVER;
offset = 0;
max_drawn_tab = 0;
select_with_rmb = false;
min_width = 0;
scrolling_enabled = true;
buttons_visible = false;
hover = -1;
drag_to_rearrange_enabled = false;
tabs_rearrange_group = -1;
connect("mouse_exited", this, "_on_mouse_exited");
}
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