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godot/scene/gui/tab_bar.cpp

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/*************************************************************************/
/* tab_bar.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 "tab_bar.h"
#include "core/object/message_queue.h"
#include "core/string/translation.h"
#include "scene/gui/box_container.h"
#include "scene/gui/label.h"
#include "scene/gui/texture_rect.h"
Size2 TabBar::get_minimum_size() const {
Ref<StyleBox> tab_unselected = get_theme_stylebox(SNAME("tab_unselected"));
Ref<StyleBox> tab_selected = get_theme_stylebox(SNAME("tab_selected"));
Ref<StyleBox> tab_disabled = get_theme_stylebox(SNAME("tab_disabled"));
int y_margin = MAX(MAX(tab_unselected->get_minimum_size().height, tab_selected->get_minimum_size().height), tab_disabled->get_minimum_size().height);
Size2 ms(0, 0);
for (int i = 0; i < tabs.size(); i++) {
Ref<Texture2D> tex = tabs[i].icon;
if (tex.is_valid()) {
ms.height = MAX(ms.height, tex->get_size().height);
if (tabs[i].text != "") {
ms.width += get_theme_constant(SNAME("hseparation"));
}
}
ms.width += Math::ceil(tabs[i].text_buf->get_size().x);
ms.height = MAX(ms.height, tabs[i].text_buf->get_size().y + y_margin);
if (tabs[i].disabled) {
ms.width += tab_disabled->get_minimum_size().width;
} else if (current == i) {
ms.width += tab_selected->get_minimum_size().width;
} else {
ms.width += tab_unselected->get_minimum_size().width;
}
if (tabs[i].right_button.is_valid()) {
Ref<Texture2D> rb = tabs[i].right_button;
Size2 bms = rb->get_size();
bms.width += get_theme_constant(SNAME("hseparation"));
ms.width += bms.width;
ms.height = MAX(bms.height + tab_unselected->get_minimum_size().height, ms.height);
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<Texture2D> cb = get_theme_icon(SNAME("close"));
Size2 bms = cb->get_size();
bms.width += get_theme_constant(SNAME("hseparation"));
ms.width += bms.width;
ms.height = MAX(bms.height + tab_unselected->get_minimum_size().height, ms.height);
}
}
if (clip_tabs) {
ms.width = 0;
}
return ms;
}
void TabBar::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<Texture2D> incr = get_theme_icon(SNAME("increment"));
Ref<Texture2D> decr = get_theme_icon(SNAME("decrement"));
if (is_layout_rtl()) {
if (pos.x < decr->get_width()) {
if (highlight_arrow != 1) {
highlight_arrow = 1;
update();
}
} else if (pos.x < incr->get_width() + decr->get_width()) {
if (highlight_arrow != 0) {
highlight_arrow = 0;
update();
}
} else if (highlight_arrow != -1) {
highlight_arrow = -1;
update();
}
} else {
int limit_minus_buttons = get_size().width - incr->get_width() - decr->get_width();
if (pos.x > limit_minus_buttons + decr->get_width()) {
if (highlight_arrow != 1) {
highlight_arrow = 1;
update();
}
} else if (pos.x > limit_minus_buttons) {
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() == MOUSE_BUTTON_WHEEL_UP && !mb->is_command_pressed()) {
if (scrolling_enabled && buttons_visible) {
if (offset > 0) {
offset--;
update();
}
}
}
if (mb->is_pressed() && mb->get_button_index() == MOUSE_BUTTON_WHEEL_DOWN && !mb->is_command_pressed()) {
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() == MOUSE_BUTTON_LEFT) {
if (rb_hover != -1) {
// pressed
emit_signal(SNAME("tab_rmb_clicked"), rb_hover);
}
rb_pressing = false;
update();
}
if (cb_pressing && !mb->is_pressed() && mb->get_button_index() == MOUSE_BUTTON_LEFT) {
if (cb_hover != -1) {
// pressed
emit_signal(SNAME("tab_close_pressed"), cb_hover);
}
cb_pressing = false;
update();
}
if (mb->is_pressed() && (mb->get_button_index() == MOUSE_BUTTON_LEFT || (select_with_rmb && mb->get_button_index() == MOUSE_BUTTON_RIGHT))) {
// clicks
Point2 pos = mb->get_position();
if (buttons_visible) {
Ref<Texture2D> incr = get_theme_icon(SNAME("increment"));
Ref<Texture2D> decr = get_theme_icon(SNAME("decrement"));
if (is_layout_rtl()) {
if (pos.x < decr->get_width()) {
if (missing_right) {
offset++;
update();
}
return;
} else if (pos.x < incr->get_width() + decr->get_width()) {
if (offset > 0) {
offset--;
update();
}
return;
}
} else {
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.is_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_pressing = true;
update();
return;
}
if (pos.x >= get_tab_rect(i).position.x && pos.x < get_tab_rect(i).position.x + tabs[i].size_cache) {
if (!tabs[i].disabled) {
found = i;
}
break;
}
}
if (found != -1) {
set_current_tab(found);
emit_signal(SNAME("tab_clicked"), found);
}
}
}
}
void TabBar::_shape(int p_tab) {
Ref<Font> font = get_theme_font(SNAME("font"));
int font_size = get_theme_font_size(SNAME("font_size"));
tabs.write[p_tab].xl_text = atr(tabs[p_tab].text);
tabs.write[p_tab].text_buf->clear();
tabs.write[p_tab].text_buf->set_width(-1);
if (tabs[p_tab].text_direction == Control::TEXT_DIRECTION_INHERITED) {
tabs.write[p_tab].text_buf->set_direction(is_layout_rtl() ? TextServer::DIRECTION_RTL : TextServer::DIRECTION_LTR);
} else {
tabs.write[p_tab].text_buf->set_direction((TextServer::Direction)tabs[p_tab].text_direction);
}
tabs.write[p_tab].text_buf->add_string(tabs.write[p_tab].xl_text, font, font_size, tabs[p_tab].opentype_features, (tabs[p_tab].language != "") ? tabs[p_tab].language : TranslationServer::get_singleton()->get_tool_locale());
}
void TabBar::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
_update_cache();
update();
} break;
case NOTIFICATION_THEME_CHANGED:
case NOTIFICATION_TRANSLATION_CHANGED: {
for (int i = 0; i < tabs.size(); ++i) {
_shape(i);
}
_update_cache();
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_unselected = get_theme_stylebox(SNAME("tab_unselected"));
Ref<StyleBox> tab_selected = get_theme_stylebox(SNAME("tab_selected"));
Ref<StyleBox> tab_disabled = get_theme_stylebox(SNAME("tab_disabled"));
Color font_selected_color = get_theme_color(SNAME("font_selected_color"));
Color font_unselected_color = get_theme_color(SNAME("font_unselected_color"));
Color font_disabled_color = get_theme_color(SNAME("font_disabled_color"));
Ref<Texture2D> close = get_theme_icon(SNAME("close"));
Color font_outline_color = get_theme_color(SNAME("font_outline_color"));
int outline_size = get_theme_constant(SNAME("outline_size"));
Vector2 size = get_size();
bool rtl = is_layout_rtl();
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<Texture2D> incr = get_theme_icon(SNAME("increment"));
Ref<Texture2D> decr = get_theme_icon(SNAME("decrement"));
Ref<Texture2D> incr_hl = get_theme_icon(SNAME("increment_highlight"));
Ref<Texture2D> decr_hl = get_theme_icon(SNAME("decrement_highlight"));
int limit = get_size().width;
int limit_minus_buttons = get_size().width - incr->get_width() - decr->get_width();
missing_right = false;
for (int i = offset; i < tabs.size(); i++) {
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 = font_disabled_color;
} else if (i == current) {
sb = tab_selected;
col = font_selected_color;
} else {
sb = tab_unselected;
col = font_unselected_color;
}
int new_width = w + lsize;
if (new_width > limit || (i < tabs.size() - 1 && new_width > limit_minus_buttons)) { // For the last tab, we accept if the tab covers the buttons.
max_drawn_tab = i - 1;
missing_right = true;
break;
} else {
max_drawn_tab = i;
}
Rect2 sb_rect;
if (rtl) {
sb_rect = Rect2(size.width - w - tabs[i].size_cache, 0, tabs[i].size_cache, h);
} else {
sb_rect = Rect2(w, 0, tabs[i].size_cache, h);
}
sb->draw(ci, sb_rect);
w += sb->get_margin(SIDE_LEFT);
Size2i sb_ms = sb->get_minimum_size();
Ref<Texture2D> icon = tabs[i].icon;
if (icon.is_valid()) {
if (rtl) {
icon->draw(ci, Point2i(size.width - w - icon->get_width(), sb->get_margin(SIDE_TOP) + ((sb_rect.size.y - sb_ms.y) - icon->get_height()) / 2));
} else {
icon->draw(ci, Point2i(w, sb->get_margin(SIDE_TOP) + ((sb_rect.size.y - sb_ms.y) - icon->get_height()) / 2));
}
if (tabs[i].text != "") {
w += icon->get_width() + get_theme_constant(SNAME("hseparation"));
}
}
if (rtl) {
Vector2 text_pos = Point2i(size.width - w - tabs[i].text_buf->get_size().x, sb->get_margin(SIDE_TOP) + ((sb_rect.size.y - sb_ms.y) - tabs[i].text_buf->get_size().y) / 2);
if (outline_size > 0 && font_outline_color.a > 0) {
tabs[i].text_buf->draw_outline(ci, text_pos, outline_size, font_outline_color);
}
tabs[i].text_buf->draw(ci, text_pos, col);
} else {
Vector2 text_pos = Point2i(w, sb->get_margin(SIDE_TOP) + ((sb_rect.size.y - sb_ms.y) - tabs[i].text_buf->get_size().y) / 2);
if (outline_size > 0 && font_outline_color.a > 0) {
tabs[i].text_buf->draw_outline(ci, text_pos, outline_size, font_outline_color);
}
tabs[i].text_buf->draw(ci, text_pos, col);
}
w += tabs[i].size_text;
if (tabs[i].right_button.is_valid()) {
Ref<StyleBox> style = get_theme_stylebox(SNAME("close_bg_highlight"));
Ref<Texture2D> rb = tabs[i].right_button;
w += get_theme_constant(SNAME("hseparation"));
Rect2 rb_rect;
rb_rect.size = style->get_minimum_size() + rb->get_size();
if (rtl) {
rb_rect.position.x = size.width - w - rb_rect.size.x;
} else {
rb_rect.position.x = w;
}
rb_rect.position.y = sb->get_margin(SIDE_TOP) + ((sb_rect.size.y - sb_ms.y) - (rb_rect.size.y)) / 2;
if (rb_hover == i) {
if (rb_pressing) {
get_theme_stylebox(SNAME("button_pressed"))->draw(ci, rb_rect);
} else {
style->draw(ci, rb_rect);
}
}
if (rtl) {
rb->draw(ci, Point2i(size.width - w - rb_rect.size.x + style->get_margin(SIDE_LEFT), rb_rect.position.y + style->get_margin(SIDE_TOP)));
} else {
rb->draw(ci, Point2i(w + style->get_margin(SIDE_LEFT), rb_rect.position.y + style->get_margin(SIDE_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_theme_stylebox(SNAME("close_bg_highlight"));
Ref<Texture2D> cb = close;
w += get_theme_constant(SNAME("hseparation"));
Rect2 cb_rect;
cb_rect.size = style->get_minimum_size() + cb->get_size();
if (rtl) {
cb_rect.position.x = size.width - w - cb_rect.size.x;
} else {
cb_rect.position.x = w;
}
cb_rect.position.y = sb->get_margin(SIDE_TOP) + ((sb_rect.size.y - sb_ms.y) - (cb_rect.size.y)) / 2;
if (!tabs[i].disabled && cb_hover == i) {
if (cb_pressing) {
get_theme_stylebox(SNAME("close_bg_pressed"))->draw(ci, cb_rect);
} else {
style->draw(ci, cb_rect);
}
}
if (rtl) {
cb->draw(ci, Point2i(size.width - w - cb_rect.size.x + style->get_margin(SIDE_LEFT), cb_rect.position.y + style->get_margin(SIDE_TOP)));
} else {
cb->draw(ci, Point2i(w + style->get_margin(SIDE_LEFT), cb_rect.position.y + style->get_margin(SIDE_TOP)));
}
w += cb->get_width();
tabs.write[i].cb_rect = cb_rect;
}
w += sb->get_margin(SIDE_RIGHT);
}
if (offset > 0 || missing_right) {
int vofs = (get_size().height - incr->get_size().height) / 2;
if (rtl) {
if (missing_right) {
draw_texture(highlight_arrow == 1 ? decr_hl : decr, Point2(0, vofs));
} else {
draw_texture(decr, Point2(0, vofs), Color(1, 1, 1, 0.5));
}
if (offset > 0) {
draw_texture(highlight_arrow == 0 ? incr_hl : incr, Point2(incr->get_size().width, vofs));
} else {
draw_texture(incr, Point2(incr->get_size().width, vofs), Color(1, 1, 1, 0.5));
}
} else {
if (offset > 0) {
draw_texture(highlight_arrow == 0 ? decr_hl : decr, Point2(limit_minus_buttons, vofs));
} else {
draw_texture(decr, Point2(limit_minus_buttons, vofs), Color(1, 1, 1, 0.5));
}
if (missing_right) {
draw_texture(highlight_arrow == 1 ? incr_hl : incr, Point2(limit_minus_buttons + decr->get_size().width, vofs));
} else {
draw_texture(incr, Point2(limit_minus_buttons + decr->get_size().width, vofs), Color(1, 1, 1, 0.5));
}
}
buttons_visible = true;
} else {
buttons_visible = false;
}
} break;
}
}
int TabBar::get_tab_count() const {
return tabs.size();
}
void TabBar::set_current_tab(int p_current) {
if (current == p_current) {
return;
}
ERR_FAIL_INDEX(p_current, get_tab_count());
previous = current;
current = p_current;
_update_cache();
update();
emit_signal(SNAME("tab_changed"), p_current);
}
int TabBar::get_current_tab() const {
return current;
}
int TabBar::get_previous_tab() const {
return previous;
}
int TabBar::get_hovered_tab() const {
return hover;
}
int TabBar::get_tab_offset() const {
return offset;
}
bool TabBar::get_offset_buttons_visible() const {
return buttons_visible;
}
void TabBar::set_tab_title(int p_tab, const String &p_title) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].text = p_title;
_shape(p_tab);
update();
minimum_size_changed();
}
String TabBar::get_tab_title(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), "");
return tabs[p_tab].text;
}
void TabBar::set_tab_text_direction(int p_tab, Control::TextDirection p_text_direction) {
ERR_FAIL_INDEX(p_tab, tabs.size());
ERR_FAIL_COND((int)p_text_direction < -1 || (int)p_text_direction > 3);
if (tabs[p_tab].text_direction != p_text_direction) {
tabs.write[p_tab].text_direction = p_text_direction;
_shape(p_tab);
update();
}
}
Control::TextDirection TabBar::get_tab_text_direction(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Control::TEXT_DIRECTION_INHERITED);
return tabs[p_tab].text_direction;
}
void TabBar::clear_tab_opentype_features(int p_tab) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].opentype_features.clear();
_shape(p_tab);
update();
}
void TabBar::set_tab_opentype_feature(int p_tab, const String &p_name, int p_value) {
ERR_FAIL_INDEX(p_tab, tabs.size());
int32_t tag = TS->name_to_tag(p_name);
if (!tabs[p_tab].opentype_features.has(tag) || (int)tabs[p_tab].opentype_features[tag] != p_value) {
tabs.write[p_tab].opentype_features[tag] = p_value;
_shape(p_tab);
update();
}
}
int TabBar::get_tab_opentype_feature(int p_tab, const String &p_name) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), -1);
int32_t tag = TS->name_to_tag(p_name);
if (!tabs[p_tab].opentype_features.has(tag)) {
return -1;
}
return tabs[p_tab].opentype_features[tag];
}
void TabBar::set_tab_language(int p_tab, const String &p_language) {
ERR_FAIL_INDEX(p_tab, tabs.size());
if (tabs[p_tab].language != p_language) {
tabs.write[p_tab].language = p_language;
_shape(p_tab);
update();
}
}
String TabBar::get_tab_language(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), "");
return tabs[p_tab].language;
}
void TabBar::set_tab_icon(int p_tab, const Ref<Texture2D> &p_icon) {
ERR_FAIL_INDEX(p_tab, tabs.size());
tabs.write[p_tab].icon = p_icon;
update();
minimum_size_changed();
}
Ref<Texture2D> TabBar::get_tab_icon(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Ref<Texture2D>());
return tabs[p_tab].icon;
}
void TabBar::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 TabBar::get_tab_disabled(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), false);
return tabs[p_tab].disabled;
}
void TabBar::set_tab_right_button(int p_tab, const Ref<Texture2D> &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<Texture2D> TabBar::get_tab_right_button(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Ref<Texture2D>());
return tabs[p_tab].right_button;
}
void TabBar::_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 = offset; i < tabs.size(); i++) {
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(SNAME("tab_hovered"), hover);
}
if (hover_buttons == -1) { // no hover
rb_hover = hover_buttons;
cb_hover = hover_buttons;
}
}
void TabBar::_update_cache() {
Ref<StyleBox> tab_disabled = get_theme_stylebox(SNAME("tab_disabled"));
Ref<StyleBox> tab_unselected = get_theme_stylebox(SNAME("tab_unselected"));
Ref<StyleBox> tab_selected = get_theme_stylebox(SNAME("tab_selected"));
Ref<Texture2D> incr = get_theme_icon(SNAME("increment"));
Ref<Texture2D> decr = get_theme_icon(SNAME("decrement"));
int limit_minus_buttons = 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(tabs[i].text_buf->get_size().x);
tabs.write[i].text_buf->set_width(-1);
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_minus_buttons - size_fixed) / count_resize, min_width);
}
for (int i = offset; i < tabs.size(); i++) {
Ref<StyleBox> sb;
if (tabs[i].disabled) {
sb = tab_disabled;
} else if (i == current) {
sb = tab_selected;
} else {
sb = tab_unselected;
}
int lsize = tabs[i].size_cache;
int slen = tabs[i].size_text;
if (min_width > 0 && mw > limit_minus_buttons && i != current) {
if (lsize > m_width) {
slen = m_width - (sb->get_margin(SIDE_LEFT) + sb->get_margin(SIDE_RIGHT));
if (tabs[i].icon.is_valid()) {
slen -= tabs[i].icon->get_width();
slen -= get_theme_constant(SNAME("hseparation"));
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<Texture2D> cb = get_theme_icon(SNAME("close"));
slen -= cb->get_width();
slen -= get_theme_constant(SNAME("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;
tabs.write[i].text_buf->set_width(slen);
w += lsize;
}
}
void TabBar::_on_mouse_exited() {
rb_hover = -1;
cb_hover = -1;
hover = -1;
highlight_arrow = -1;
update();
}
void TabBar::add_tab(const String &p_str, const Ref<Texture2D> &p_icon) {
Tab t;
t.text = p_str;
t.xl_text = atr(p_str);
t.text_buf.instantiate();
t.text_buf->set_direction(is_layout_rtl() ? TextServer::DIRECTION_RTL : TextServer::DIRECTION_LTR);
t.text_buf->add_string(t.xl_text, get_theme_font(SNAME("font")), get_theme_font_size(SNAME("font_size")), Dictionary(), TranslationServer::get_singleton()->get_tool_locale());
t.icon = p_icon;
t.disabled = false;
t.ofs_cache = 0;
t.size_cache = 0;
tabs.push_back(t);
_update_cache();
call_deferred(SNAME("_update_hover"));
update();
minimum_size_changed();
}
void TabBar::clear_tabs() {
tabs.clear();
current = 0;
previous = 0;
call_deferred(SNAME("_update_hover"));
update();
}
void TabBar::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(SNAME("_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 TabBar::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 TabBar::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 TabBars
Node *from_node = get_node(from_path);
TabBar *from_tabs = Object::cast_to<TabBar>(from_node);
if (from_tabs && from_tabs->get_tabs_rearrange_group() == get_tabs_rearrange_group()) {
return true;
}
}
}
return false;
}
void TabBar::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(SNAME("active_tab_rearranged"), 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);
TabBar *from_tabs = Object::cast_to<TabBar>(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(SNAME("tab_changed"), hover_now);
_update_cache();
}
}
}
update();
}
int TabBar::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 TabBar::set_tab_align(TabAlign p_align) {
ERR_FAIL_INDEX(p_align, ALIGN_MAX);
tab_align = p_align;
update();
}
TabBar::TabAlign TabBar::get_tab_align() const {
return tab_align;
}
void TabBar::set_clip_tabs(bool p_clip_tabs) {
if (clip_tabs == p_clip_tabs) {
return;
}
clip_tabs = p_clip_tabs;
update();
minimum_size_changed();
}
bool TabBar::get_clip_tabs() const {
return clip_tabs;
}
void TabBar::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 TabBar::get_tab_width(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, tabs.size(), 0);
Ref<StyleBox> tab_unselected = get_theme_stylebox(SNAME("tab_unselected"));
Ref<StyleBox> tab_selected = get_theme_stylebox(SNAME("tab_selected"));
Ref<StyleBox> tab_disabled = get_theme_stylebox(SNAME("tab_disabled"));
int x = 0;
Ref<Texture2D> tex = tabs[p_idx].icon;
if (tex.is_valid()) {
x += tex->get_width();
if (tabs[p_idx].text != "") {
x += get_theme_constant(SNAME("hseparation"));
}
}
x += Math::ceil(tabs[p_idx].text_buf->get_size().x);
if (tabs[p_idx].disabled) {
x += tab_disabled->get_minimum_size().width;
} else if (current == p_idx) {
x += tab_selected->get_minimum_size().width;
} else {
x += tab_unselected->get_minimum_size().width;
}
if (tabs[p_idx].right_button.is_valid()) {
Ref<Texture2D> rb = tabs[p_idx].right_button;
x += rb->get_width();
x += get_theme_constant(SNAME("hseparation"));
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && p_idx == current)) {
Ref<Texture2D> cb = get_theme_icon(SNAME("close"));
x += cb->get_width();
x += get_theme_constant(SNAME("hseparation"));
}
return x;
}
void TabBar::_ensure_no_over_offset() {
if (!is_inside_tree()) {
return;
}
Ref<Texture2D> incr = get_theme_icon(SNAME("increment"));
Ref<Texture2D> decr = get_theme_icon(SNAME("decrement"));
int limit = get_size().width;
int limit_minus_buttons = get_size().width - incr->get_width() - decr->get_width();
while (offset > 0) {
int total_w = 0;
for (int i = offset - 1; i < tabs.size(); i++) {
total_w += tabs[i].size_cache;
}
if ((buttons_visible && total_w < limit_minus_buttons) || total_w < limit) { // For the last tab, we accept if the tab covers the buttons.
offset--;
update();
} else {
break;
}
}
}
void TabBar::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<Texture2D> incr = get_theme_icon(SNAME("increment"));
Ref<Texture2D> decr = get_theme_icon(SNAME("decrement"));
int limit = get_size().width;
int limit_minus_buttons = get_size().width - incr->get_width() - decr->get_width();
for (int i = offset; i <= p_idx; i++) {
int total_w = tabs[i].ofs_cache + tabs[i].size_cache;
if (total_w > limit || (buttons_visible && total_w > limit_minus_buttons)) {
offset++;
}
}
if (prev_offset != offset) {
update();
}
}
Rect2 TabBar::get_tab_rect(int p_tab) const {
ERR_FAIL_INDEX_V(p_tab, tabs.size(), Rect2());
if (is_layout_rtl()) {
return Rect2(get_size().width - tabs[p_tab].ofs_cache - tabs[p_tab].size_cache, 0, tabs[p_tab].size_cache, get_size().height);
} else {
return Rect2(tabs[p_tab].ofs_cache, 0, tabs[p_tab].size_cache, get_size().height);
}
}
void TabBar::set_tab_close_display_policy(CloseButtonDisplayPolicy p_policy) {
ERR_FAIL_INDEX(p_policy, CLOSE_BUTTON_MAX);
cb_displaypolicy = p_policy;
update();
}
TabBar::CloseButtonDisplayPolicy TabBar::get_tab_close_display_policy() const {
return cb_displaypolicy;
}
void TabBar::set_min_width(int p_width) {
min_width = p_width;
}
void TabBar::set_scrolling_enabled(bool p_enabled) {
scrolling_enabled = p_enabled;
}
bool TabBar::get_scrolling_enabled() const {
return scrolling_enabled;
}
void TabBar::set_drag_to_rearrange_enabled(bool p_enabled) {
drag_to_rearrange_enabled = p_enabled;
}
bool TabBar::get_drag_to_rearrange_enabled() const {
return drag_to_rearrange_enabled;
}
void TabBar::set_tabs_rearrange_group(int p_group_id) {
tabs_rearrange_group = p_group_id;
}
int TabBar::get_tabs_rearrange_group() const {
return tabs_rearrange_group;
}
void TabBar::set_select_with_rmb(bool p_enabled) {
select_with_rmb = p_enabled;
}
bool TabBar::get_select_with_rmb() const {
return select_with_rmb;
}
void TabBar::_bind_methods() {
ClassDB::bind_method(D_METHOD("_update_hover"), &TabBar::_update_hover);
ClassDB::bind_method(D_METHOD("get_tab_count"), &TabBar::get_tab_count);
ClassDB::bind_method(D_METHOD("set_current_tab", "tab_idx"), &TabBar::set_current_tab);
ClassDB::bind_method(D_METHOD("get_current_tab"), &TabBar::get_current_tab);
ClassDB::bind_method(D_METHOD("get_previous_tab"), &TabBar::get_previous_tab);
ClassDB::bind_method(D_METHOD("set_tab_title", "tab_idx", "title"), &TabBar::set_tab_title);
ClassDB::bind_method(D_METHOD("get_tab_title", "tab_idx"), &TabBar::get_tab_title);
ClassDB::bind_method(D_METHOD("set_tab_text_direction", "tab_idx", "direction"), &TabBar::set_tab_text_direction);
ClassDB::bind_method(D_METHOD("get_tab_text_direction", "tab_idx"), &TabBar::get_tab_text_direction);
ClassDB::bind_method(D_METHOD("set_tab_opentype_feature", "tab_idx", "tag", "values"), &TabBar::set_tab_opentype_feature);
ClassDB::bind_method(D_METHOD("get_tab_opentype_feature", "tab_idx", "tag"), &TabBar::get_tab_opentype_feature);
ClassDB::bind_method(D_METHOD("clear_tab_opentype_features", "tab_idx"), &TabBar::clear_tab_opentype_features);
ClassDB::bind_method(D_METHOD("set_tab_language", "tab_idx", "language"), &TabBar::set_tab_language);
ClassDB::bind_method(D_METHOD("get_tab_language", "tab_idx"), &TabBar::get_tab_language);
ClassDB::bind_method(D_METHOD("set_tab_icon", "tab_idx", "icon"), &TabBar::set_tab_icon);
ClassDB::bind_method(D_METHOD("get_tab_icon", "tab_idx"), &TabBar::get_tab_icon);
ClassDB::bind_method(D_METHOD("set_tab_disabled", "tab_idx", "disabled"), &TabBar::set_tab_disabled);
ClassDB::bind_method(D_METHOD("get_tab_disabled", "tab_idx"), &TabBar::get_tab_disabled);
ClassDB::bind_method(D_METHOD("remove_tab", "tab_idx"), &TabBar::remove_tab);
ClassDB::bind_method(D_METHOD("add_tab", "title", "icon"), &TabBar::add_tab, DEFVAL(""), DEFVAL(Ref<Texture2D>()));
ClassDB::bind_method(D_METHOD("set_tab_align", "align"), &TabBar::set_tab_align);
ClassDB::bind_method(D_METHOD("get_tab_align"), &TabBar::get_tab_align);
ClassDB::bind_method(D_METHOD("set_clip_tabs", "clip_tabs"), &TabBar::set_clip_tabs);
ClassDB::bind_method(D_METHOD("get_clip_tabs"), &TabBar::get_clip_tabs);
ClassDB::bind_method(D_METHOD("get_tab_offset"), &TabBar::get_tab_offset);
ClassDB::bind_method(D_METHOD("get_offset_buttons_visible"), &TabBar::get_offset_buttons_visible);
ClassDB::bind_method(D_METHOD("ensure_tab_visible", "idx"), &TabBar::ensure_tab_visible);
ClassDB::bind_method(D_METHOD("get_tab_rect", "tab_idx"), &TabBar::get_tab_rect);
ClassDB::bind_method(D_METHOD("move_tab", "from", "to"), &TabBar::move_tab);
ClassDB::bind_method(D_METHOD("set_tab_close_display_policy", "policy"), &TabBar::set_tab_close_display_policy);
ClassDB::bind_method(D_METHOD("get_tab_close_display_policy"), &TabBar::get_tab_close_display_policy);
ClassDB::bind_method(D_METHOD("set_scrolling_enabled", "enabled"), &TabBar::set_scrolling_enabled);
ClassDB::bind_method(D_METHOD("get_scrolling_enabled"), &TabBar::get_scrolling_enabled);
ClassDB::bind_method(D_METHOD("set_drag_to_rearrange_enabled", "enabled"), &TabBar::set_drag_to_rearrange_enabled);
ClassDB::bind_method(D_METHOD("get_drag_to_rearrange_enabled"), &TabBar::get_drag_to_rearrange_enabled);
ClassDB::bind_method(D_METHOD("set_tabs_rearrange_group", "group_id"), &TabBar::set_tabs_rearrange_group);
ClassDB::bind_method(D_METHOD("get_tabs_rearrange_group"), &TabBar::get_tabs_rearrange_group);
ClassDB::bind_method(D_METHOD("set_select_with_rmb", "enabled"), &TabBar::set_select_with_rmb);
ClassDB::bind_method(D_METHOD("get_select_with_rmb"), &TabBar::get_select_with_rmb);
ADD_SIGNAL(MethodInfo("tab_changed", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("tab_rmb_clicked", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("tab_close_pressed", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("tab_hovered", PropertyInfo(Variant::INT, "tab")));
ADD_SIGNAL(MethodInfo("active_tab_rearranged", 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::BOOL, "clip_tabs"), "set_clip_tabs", "get_clip_tabs");
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);
}
TabBar::TabBar() {
connect("mouse_exited", callable_mp(this, &TabBar::_on_mouse_exited));
}
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