675 lines
20 KiB
C++
675 lines
20 KiB
C++
/*************************************************************************/
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/* tab_container.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "tab_container.h"
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#include "message_queue.h"
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int TabContainer::_get_top_margin() const {
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if (!tabs_visible)
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return 0;
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// Respect the minimum tab height.
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Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
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Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
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Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
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int tab_height = MAX(MAX(tab_bg->get_minimum_size().height, tab_fg->get_minimum_size().height), tab_disabled->get_minimum_size().height);
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// Font height or higher icon wins.
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Ref<Font> font = get_font("font");
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int content_height = font->get_height();
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Vector<Control *> tabs = _get_tabs();
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for (int i = 0; i < tabs.size(); i++) {
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Control *c = tabs[i];
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if (!c->has_meta("_tab_icon"))
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continue;
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Ref<Texture> tex = c->get_meta("_tab_icon");
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if (!tex.is_valid())
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continue;
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content_height = MAX(content_height, tex->get_size().height);
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}
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return tab_height + content_height;
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}
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void TabContainer::_gui_input(const Ref<InputEvent> &p_event) {
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Ref<InputEventMouseButton> mb = p_event;
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if (mb.is_valid() && mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT) {
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Point2 pos(mb->get_position().x, mb->get_position().y);
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Size2 size = get_size();
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// Click must be on tabs in the tab header area.
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if (pos.x < tabs_ofs_cache || pos.y > _get_top_margin())
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return;
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// Handle menu button.
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Ref<Texture> menu = get_icon("menu");
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if (popup && pos.x > size.width - menu->get_width()) {
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emit_signal("pre_popup_pressed");
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Vector2 popup_pos = get_global_position();
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popup_pos.x += size.width - popup->get_size().width;
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popup_pos.y += menu->get_height();
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popup->set_global_position(popup_pos);
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popup->popup();
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return;
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}
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Vector<Control *> tabs = _get_tabs();
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// Handle navigation buttons.
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if (buttons_visible_cache) {
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Ref<Texture> increment = get_icon("increment");
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Ref<Texture> decrement = get_icon("decrement");
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if (pos.x > size.width - increment->get_width()) {
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if (last_tab_cache < tabs.size() - 1) {
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first_tab_cache += 1;
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update();
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}
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return;
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} else if (pos.x > size.width - increment->get_width() - decrement->get_width()) {
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if (first_tab_cache > 0) {
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first_tab_cache -= 1;
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update();
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}
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return;
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}
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}
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// Activate the clicked tab.
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pos.x -= tabs_ofs_cache;
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for (int i = first_tab_cache; i <= last_tab_cache; i++) {
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int tab_width = _get_tab_width(i);
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if (pos.x < tab_width) {
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if (!get_tab_disabled(i)) {
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set_current_tab(i);
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}
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break;
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}
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pos.x -= tab_width;
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}
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}
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}
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void TabContainer::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_DRAW: {
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RID canvas = get_canvas_item();
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Size2 size = get_size();
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// Draw only the tab area if the header is hidden.
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Ref<StyleBox> panel = get_stylebox("panel");
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if (!tabs_visible) {
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panel->draw(canvas, Rect2(0, 0, size.width, size.height));
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return;
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}
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Vector<Control *> tabs = _get_tabs();
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Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
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Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
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Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
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Ref<Texture> increment = get_icon("increment");
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Ref<Texture> decrement = get_icon("decrement");
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Ref<Texture> menu = get_icon("menu");
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Ref<Texture> menu_hl = get_icon("menu_hl");
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Ref<Font> font = get_font("font");
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Color font_color_fg = get_color("font_color_fg");
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Color font_color_bg = get_color("font_color_bg");
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Color font_color_disabled = get_color("font_color_disabled");
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int side_margin = get_constant("side_margin");
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int icon_text_distance = get_constant("hseparation");
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// Find out start and width of the header area.
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int header_x = side_margin;
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int header_width = size.width - side_margin * 2;
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int header_height = _get_top_margin();
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if (popup)
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header_width -= menu->get_width();
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// Check if all tabs would fit into the header area.
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int all_tabs_width = 0;
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for (int i = 0; i < tabs.size(); i++) {
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int tab_width = _get_tab_width(i);
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all_tabs_width += tab_width;
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if (all_tabs_width > header_width) {
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// Not all tabs are visible at the same time - reserve space for navigation buttons.
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buttons_visible_cache = true;
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header_width -= decrement->get_width() + increment->get_width();
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break;
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} else {
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buttons_visible_cache = false;
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}
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}
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// With buttons, a right side margin does not need to be respected.
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if (popup || buttons_visible_cache) {
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header_width += side_margin;
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}
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// Go through the visible tabs to find the width they occupy.
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all_tabs_width = 0;
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Vector<int> tab_widths;
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for (int i = first_tab_cache; i < tabs.size(); i++) {
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int tab_width = _get_tab_width(i);
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if (all_tabs_width + tab_width > header_width && tab_widths.size() > 0)
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break;
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all_tabs_width += tab_width;
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tab_widths.push_back(tab_width);
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}
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// Find the offset at which to draw tabs, according to the alignment.
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switch (align) {
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case ALIGN_LEFT:
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tabs_ofs_cache = header_x;
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break;
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case ALIGN_CENTER:
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tabs_ofs_cache = header_x + (header_width / 2) - (all_tabs_width / 2);
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break;
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case ALIGN_RIGHT:
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tabs_ofs_cache = header_x + header_width - all_tabs_width;
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break;
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}
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// Draw the tab area.
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panel->draw(canvas, Rect2(0, header_height, size.width, size.height - header_height));
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// Draw all visible tabs.
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int x = 0;
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for (int i = 0; i < tab_widths.size(); i++) {
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Ref<StyleBox> tab_style;
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Color font_color;
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if (get_tab_disabled(i + first_tab_cache)) {
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tab_style = tab_disabled;
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font_color = font_color_disabled;
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} else if (i + first_tab_cache == current) {
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tab_style = tab_fg;
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font_color = font_color_fg;
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} else {
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tab_style = tab_bg;
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font_color = font_color_bg;
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}
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// Draw the tab background.
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int tab_width = tab_widths[i];
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Rect2 tab_rect(tabs_ofs_cache + x, 0, tab_width, header_height);
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tab_style->draw(canvas, tab_rect);
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// Draw the tab contents.
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Control *control = Object::cast_to<Control>(tabs[i + first_tab_cache]);
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String text = control->has_meta("_tab_name") ? String(tr(String(control->get_meta("_tab_name")))) : String(control->get_name());
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int x_content = tab_rect.position.x + tab_style->get_margin(MARGIN_LEFT);
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int top_margin = tab_style->get_margin(MARGIN_TOP);
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int y_center = top_margin + (tab_rect.size.y - tab_style->get_minimum_size().y) / 2;
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// Draw the tab icon.
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if (control->has_meta("_tab_icon")) {
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Ref<Texture> icon = control->get_meta("_tab_icon");
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if (icon.is_valid()) {
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int y = y_center - (icon->get_height() / 2);
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icon->draw(canvas, Point2i(x_content, y));
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if (text != "")
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x_content += icon->get_width() + icon_text_distance;
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}
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}
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// Draw the tab text.
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Point2i text_pos(x_content, y_center - (font->get_height() / 2) + font->get_ascent());
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font->draw(canvas, text_pos, text, font_color);
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x += tab_width;
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last_tab_cache = i + first_tab_cache;
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}
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// Draw the popup menu.
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x = get_size().width;
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if (popup) {
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x -= menu->get_width();
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if (mouse_x_cache > x)
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menu_hl->draw(get_canvas_item(), Size2(x, 0));
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else
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menu->draw(get_canvas_item(), Size2(x, 0));
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}
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// Draw the navigation buttons.
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if (buttons_visible_cache) {
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int y_center = header_height / 2;
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x -= increment->get_width();
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increment->draw(canvas,
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Point2(x, y_center - (increment->get_height() / 2)),
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Color(1, 1, 1, last_tab_cache < tabs.size() - 1 ? 1.0 : 0.5));
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x -= decrement->get_width();
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decrement->draw(canvas,
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Point2(x, y_center - (decrement->get_height() / 2)),
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Color(1, 1, 1, first_tab_cache > 0 ? 1.0 : 0.5));
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}
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} break;
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case NOTIFICATION_THEME_CHANGED: {
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if (get_tab_count() > 0) {
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call_deferred("set_current_tab", get_current_tab()); //wait until all changed theme
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}
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} break;
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}
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}
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int TabContainer::_get_tab_width(int p_index) const {
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Control *control = Object::cast_to<Control>(_get_tabs()[p_index]);
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if (!control || control->is_set_as_toplevel())
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return 0;
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// Get the width of the text displayed on the tab.
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Ref<Font> font = get_font("font");
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String text = control->has_meta("_tab_name") ? String(tr(String(control->get_meta("_tab_name")))) : String(control->get_name());
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int width = font->get_string_size(text).width;
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// Add space for a tab icon.
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if (control->has_meta("_tab_icon")) {
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Ref<Texture> icon = control->get_meta("_tab_icon");
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if (icon.is_valid()) {
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width += icon->get_width();
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if (text != "")
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width += get_constant("hseparation");
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}
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}
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// Respect a minimum size.
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Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
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Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
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Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
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if (get_tab_disabled(p_index)) {
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width += tab_disabled->get_minimum_size().width;
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} else if (p_index == current) {
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width += tab_fg->get_minimum_size().width;
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} else {
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width += tab_bg->get_minimum_size().width;
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}
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return width;
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}
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Vector<Control *> TabContainer::_get_tabs() const {
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Vector<Control *> controls;
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for (int i = 0; i < get_child_count(); i++) {
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Control *control = Object::cast_to<Control>(get_child(i));
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if (!control || control->is_toplevel_control())
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continue;
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controls.push_back(control);
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}
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return controls;
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}
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void TabContainer::_child_renamed_callback() {
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update();
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}
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void TabContainer::add_child_notify(Node *p_child) {
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Control::add_child_notify(p_child);
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Control *c = Object::cast_to<Control>(p_child);
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if (!c)
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return;
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if (c->is_set_as_toplevel())
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return;
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bool first = false;
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if (get_tab_count() != 1)
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c->hide();
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else {
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c->show();
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//call_deferred("set_current_tab",0);
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first = true;
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current = 0;
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previous = 0;
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}
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c->set_anchors_and_margins_preset(Control::PRESET_WIDE);
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if (tabs_visible)
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c->set_margin(MARGIN_TOP, _get_top_margin());
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Ref<StyleBox> sb = get_stylebox("panel");
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c->set_margin(Margin(MARGIN_TOP), c->get_margin(Margin(MARGIN_TOP)) + sb->get_margin(Margin(MARGIN_TOP)));
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c->set_margin(Margin(MARGIN_LEFT), c->get_margin(Margin(MARGIN_LEFT)) + sb->get_margin(Margin(MARGIN_LEFT)));
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c->set_margin(Margin(MARGIN_RIGHT), c->get_margin(Margin(MARGIN_RIGHT)) - sb->get_margin(Margin(MARGIN_RIGHT)));
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c->set_margin(Margin(MARGIN_BOTTOM), c->get_margin(Margin(MARGIN_BOTTOM)) - sb->get_margin(Margin(MARGIN_BOTTOM)));
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update();
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p_child->connect("renamed", this, "_child_renamed_callback");
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if (first)
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emit_signal("tab_changed", current);
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}
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int TabContainer::get_tab_count() const {
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return _get_tabs().size();
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}
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void TabContainer::set_current_tab(int p_current) {
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ERR_FAIL_INDEX(p_current, get_tab_count());
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int pending_previous = current;
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current = p_current;
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Ref<StyleBox> sb = get_stylebox("panel");
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Vector<Control *> tabs = _get_tabs();
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for (int i = 0; i < tabs.size(); i++) {
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Control *c = tabs[i];
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if (i == current) {
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c->show();
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c->set_anchors_and_margins_preset(Control::PRESET_WIDE);
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if (tabs_visible)
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c->set_margin(MARGIN_TOP, _get_top_margin());
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c->set_margin(Margin(MARGIN_TOP), c->get_margin(Margin(MARGIN_TOP)) + sb->get_margin(Margin(MARGIN_TOP)));
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c->set_margin(Margin(MARGIN_LEFT), c->get_margin(Margin(MARGIN_LEFT)) + sb->get_margin(Margin(MARGIN_LEFT)));
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c->set_margin(Margin(MARGIN_RIGHT), c->get_margin(Margin(MARGIN_RIGHT)) - sb->get_margin(Margin(MARGIN_RIGHT)));
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c->set_margin(Margin(MARGIN_BOTTOM), c->get_margin(Margin(MARGIN_BOTTOM)) - sb->get_margin(Margin(MARGIN_BOTTOM)));
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} else
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c->hide();
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}
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_change_notify("current_tab");
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if (pending_previous == current)
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emit_signal("tab_selected", current);
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else {
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previous = pending_previous;
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emit_signal("tab_selected", current);
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emit_signal("tab_changed", current);
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}
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update();
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}
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int TabContainer::get_current_tab() const {
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return current;
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}
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int TabContainer::get_previous_tab() const {
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return previous;
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}
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Control *TabContainer::get_tab_control(int p_idx) const {
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Vector<Control *> tabs = _get_tabs();
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if (p_idx >= 0 && p_idx < tabs.size())
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return tabs[p_idx];
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else
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return NULL;
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}
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Control *TabContainer::get_current_tab_control() const {
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Vector<Control *> tabs = _get_tabs();
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if (current >= 0 && current < tabs.size())
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return tabs[current];
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else
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return NULL;
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}
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void TabContainer::remove_child_notify(Node *p_child) {
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Control::remove_child_notify(p_child);
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int tc = get_tab_count();
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if (current == tc - 1) {
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current--;
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if (current < 0)
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current = 0;
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else {
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call_deferred("set_current_tab", current);
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}
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}
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p_child->disconnect("renamed", this, "_child_renamed_callback");
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update();
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}
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void TabContainer::set_tab_align(TabAlign p_align) {
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ERR_FAIL_INDEX(p_align, 3);
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align = p_align;
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update();
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_change_notify("tab_align");
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}
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TabContainer::TabAlign TabContainer::get_tab_align() const {
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return align;
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}
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void TabContainer::set_tabs_visible(bool p_visibe) {
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if (p_visibe == tabs_visible)
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return;
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tabs_visible = p_visibe;
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Vector<Control *> tabs = _get_tabs();
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for (int i = 0; i < tabs.size(); i++) {
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Control *c = tabs[i];
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if (p_visibe)
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c->set_margin(MARGIN_TOP, _get_top_margin());
|
|
else
|
|
c->set_margin(MARGIN_TOP, 0);
|
|
}
|
|
update();
|
|
}
|
|
|
|
bool TabContainer::are_tabs_visible() const {
|
|
|
|
return tabs_visible;
|
|
}
|
|
|
|
Control *TabContainer::_get_tab(int p_idx) const {
|
|
|
|
return get_tab_control(p_idx);
|
|
}
|
|
|
|
void TabContainer::set_tab_title(int p_tab, const String &p_title) {
|
|
|
|
Control *child = _get_tab(p_tab);
|
|
ERR_FAIL_COND(!child);
|
|
child->set_meta("_tab_name", p_title);
|
|
}
|
|
|
|
String TabContainer::get_tab_title(int p_tab) const {
|
|
|
|
Control *child = _get_tab(p_tab);
|
|
ERR_FAIL_COND_V(!child, "");
|
|
if (child->has_meta("_tab_name"))
|
|
return child->get_meta("_tab_name");
|
|
else
|
|
return child->get_name();
|
|
}
|
|
|
|
void TabContainer::set_tab_icon(int p_tab, const Ref<Texture> &p_icon) {
|
|
|
|
Control *child = _get_tab(p_tab);
|
|
ERR_FAIL_COND(!child);
|
|
child->set_meta("_tab_icon", p_icon);
|
|
}
|
|
Ref<Texture> TabContainer::get_tab_icon(int p_tab) const {
|
|
|
|
Control *child = _get_tab(p_tab);
|
|
ERR_FAIL_COND_V(!child, Ref<Texture>());
|
|
if (child->has_meta("_tab_icon"))
|
|
return child->get_meta("_tab_icon");
|
|
else
|
|
return Ref<Texture>();
|
|
}
|
|
|
|
void TabContainer::set_tab_disabled(int p_tab, bool p_disabled) {
|
|
|
|
Control *child = _get_tab(p_tab);
|
|
ERR_FAIL_COND(!child);
|
|
child->set_meta("_tab_disabled", p_disabled);
|
|
update();
|
|
}
|
|
|
|
bool TabContainer::get_tab_disabled(int p_tab) const {
|
|
|
|
Control *child = _get_tab(p_tab);
|
|
ERR_FAIL_COND_V(!child, false);
|
|
if (child->has_meta("_tab_disabled"))
|
|
return child->get_meta("_tab_disabled");
|
|
else
|
|
return false;
|
|
}
|
|
|
|
void TabContainer::get_translatable_strings(List<String> *p_strings) const {
|
|
|
|
Vector<Control *> tabs = _get_tabs();
|
|
for (int i = 0; i < tabs.size(); i++) {
|
|
|
|
Control *c = tabs[i];
|
|
|
|
if (!c->has_meta("_tab_name"))
|
|
continue;
|
|
|
|
String name = c->get_meta("_tab_name");
|
|
|
|
if (name != "")
|
|
p_strings->push_back(name);
|
|
}
|
|
}
|
|
|
|
Size2 TabContainer::get_minimum_size() const {
|
|
|
|
Size2 ms;
|
|
|
|
Vector<Control *> tabs = _get_tabs();
|
|
for (int i = 0; i < tabs.size(); i++) {
|
|
|
|
Control *c = tabs[i];
|
|
|
|
if (!c->is_visible_in_tree())
|
|
continue;
|
|
|
|
Size2 cms = c->get_combined_minimum_size();
|
|
ms.x = MAX(ms.x, cms.x);
|
|
ms.y = MAX(ms.y, cms.y);
|
|
}
|
|
|
|
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");
|
|
|
|
ms.y += MAX(MAX(tab_bg->get_minimum_size().y, tab_fg->get_minimum_size().y), tab_disabled->get_minimum_size().y);
|
|
ms.y += font->get_height();
|
|
|
|
Ref<StyleBox> sb = get_stylebox("panel");
|
|
ms += sb->get_minimum_size();
|
|
|
|
return ms;
|
|
}
|
|
|
|
void TabContainer::set_popup(Node *p_popup) {
|
|
ERR_FAIL_NULL(p_popup);
|
|
popup = Object::cast_to<Popup>(p_popup);
|
|
update();
|
|
}
|
|
|
|
Popup *TabContainer::get_popup() const {
|
|
return popup;
|
|
}
|
|
|
|
void TabContainer::_bind_methods() {
|
|
|
|
ClassDB::bind_method(D_METHOD("_gui_input"), &TabContainer::_gui_input);
|
|
ClassDB::bind_method(D_METHOD("get_tab_count"), &TabContainer::get_tab_count);
|
|
ClassDB::bind_method(D_METHOD("set_current_tab", "tab_idx"), &TabContainer::set_current_tab);
|
|
ClassDB::bind_method(D_METHOD("get_current_tab"), &TabContainer::get_current_tab);
|
|
ClassDB::bind_method(D_METHOD("get_previous_tab"), &TabContainer::get_previous_tab);
|
|
ClassDB::bind_method(D_METHOD("get_current_tab_control"), &TabContainer::get_current_tab_control);
|
|
ClassDB::bind_method(D_METHOD("get_tab_control", "idx"), &TabContainer::get_tab_control);
|
|
ClassDB::bind_method(D_METHOD("set_tab_align", "align"), &TabContainer::set_tab_align);
|
|
ClassDB::bind_method(D_METHOD("get_tab_align"), &TabContainer::get_tab_align);
|
|
ClassDB::bind_method(D_METHOD("set_tabs_visible", "visible"), &TabContainer::set_tabs_visible);
|
|
ClassDB::bind_method(D_METHOD("are_tabs_visible"), &TabContainer::are_tabs_visible);
|
|
ClassDB::bind_method(D_METHOD("set_tab_title", "tab_idx", "title"), &TabContainer::set_tab_title);
|
|
ClassDB::bind_method(D_METHOD("get_tab_title", "tab_idx"), &TabContainer::get_tab_title);
|
|
ClassDB::bind_method(D_METHOD("set_tab_icon", "tab_idx", "icon"), &TabContainer::set_tab_icon);
|
|
ClassDB::bind_method(D_METHOD("get_tab_icon", "tab_idx"), &TabContainer::get_tab_icon);
|
|
ClassDB::bind_method(D_METHOD("set_tab_disabled", "tab_idx", "disabled"), &TabContainer::set_tab_disabled);
|
|
ClassDB::bind_method(D_METHOD("get_tab_disabled", "tab_idx"), &TabContainer::get_tab_disabled);
|
|
ClassDB::bind_method(D_METHOD("set_popup", "popup"), &TabContainer::set_popup);
|
|
ClassDB::bind_method(D_METHOD("get_popup"), &TabContainer::get_popup);
|
|
|
|
ClassDB::bind_method(D_METHOD("_child_renamed_callback"), &TabContainer::_child_renamed_callback);
|
|
|
|
ADD_SIGNAL(MethodInfo("tab_changed", PropertyInfo(Variant::INT, "tab")));
|
|
ADD_SIGNAL(MethodInfo("tab_selected", PropertyInfo(Variant::INT, "tab")));
|
|
ADD_SIGNAL(MethodInfo("pre_popup_pressed"));
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "tab_align", PROPERTY_HINT_ENUM, "Left,Center,Right"), "set_tab_align", "get_tab_align");
|
|
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::BOOL, "tabs_visible"), "set_tabs_visible", "are_tabs_visible");
|
|
|
|
BIND_ENUM_CONSTANT(ALIGN_LEFT);
|
|
BIND_ENUM_CONSTANT(ALIGN_CENTER);
|
|
BIND_ENUM_CONSTANT(ALIGN_RIGHT);
|
|
}
|
|
|
|
TabContainer::TabContainer() {
|
|
|
|
first_tab_cache = 0;
|
|
buttons_visible_cache = false;
|
|
tabs_ofs_cache = 0;
|
|
current = 0;
|
|
previous = 0;
|
|
mouse_x_cache = 0;
|
|
align = ALIGN_CENTER;
|
|
tabs_visible = true;
|
|
popup = NULL;
|
|
}
|