diff options
Diffstat (limited to 'scene/gui/tab_bar.cpp')
| -rw-r--r-- | scene/gui/tab_bar.cpp | 1200 |
1 files changed, 1200 insertions, 0 deletions
diff --git a/scene/gui/tab_bar.cpp b/scene/gui/tab_bar.cpp new file mode 100644 index 0000000000..57ee7fd494 --- /dev/null +++ b/scene/gui/tab_bar.cpp @@ -0,0 +1,1200 @@ +/*************************************************************************/ +/* 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() == MouseButton::WHEEL_UP && !mb->is_command_pressed()) { + if (scrolling_enabled && buttons_visible) { + if (offset > 0) { + offset--; + update(); + } + } + } + + if (mb->is_pressed() && mb->get_button_index() == MouseButton::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() == MouseButton::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() == MouseButton::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() == MouseButton::LEFT || (select_with_rmb && mb->get_button_index() == MouseButton::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_at(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_at(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)); +} |