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virtualx-engine/scene/gui/tabs.cpp
lawnjelly bc607fb607 Fix signed distance field font rendering 
This fix works in both GLES3 and GLES2.

The rendering formula in the shader was adjusted to further improve the
sharpness/antialiasing quality balance.

Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>
2024-02-05 17:50:33 +00:00

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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_hover();
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_hover();
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");
select_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_metadata(int p_tab, const Variant &p_metadata) {
ERR_FAIL_INDEX(p_tab, tabs.size());
if (tabs[p_tab].metadata == p_metadata) {
return;
}
tabs.write[p_tab].metadata = p_metadata;
}
Variant Tabs::get_tab_metadata(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Variant());
return tabs[p_tab].metadata;
}
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("set_tab_metadata", "tab_idx", "metadata"), &Tabs::set_tab_metadata);
ClassDB::bind_method(D_METHOD("get_tab_metadata", "tab_idx"), &Tabs::get_tab_metadata);
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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