608 lines
18 KiB
C++
608 lines
18 KiB
C++
/*************************************************************************/
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/* rich_text_label.h */
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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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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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#ifndef RICH_TEXT_LABEL_H
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#define RICH_TEXT_LABEL_H
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#include "rich_text_effect.h"
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#include "scene/gui/scroll_bar.h"
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#include "scene/resources/text_paragraph.h"
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class RichTextLabel : public Control {
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GDCLASS(RichTextLabel, Control);
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public:
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enum ListType {
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LIST_NUMBERS,
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LIST_LETTERS,
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LIST_ROMAN,
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LIST_DOTS
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};
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enum ItemType {
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ITEM_FRAME,
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ITEM_TEXT,
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ITEM_IMAGE,
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ITEM_NEWLINE,
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ITEM_FONT,
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ITEM_FONT_SIZE,
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ITEM_FONT_FEATURES,
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ITEM_COLOR,
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ITEM_OUTLINE_SIZE,
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ITEM_OUTLINE_COLOR,
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ITEM_UNDERLINE,
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ITEM_STRIKETHROUGH,
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ITEM_PARAGRAPH,
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ITEM_INDENT,
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ITEM_LIST,
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ITEM_TABLE,
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ITEM_FADE,
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ITEM_SHAKE,
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ITEM_WAVE,
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ITEM_TORNADO,
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ITEM_RAINBOW,
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ITEM_BGCOLOR,
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ITEM_FGCOLOR,
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ITEM_META,
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ITEM_DROPCAP,
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ITEM_CUSTOMFX
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};
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enum VisibleCharactersBehavior {
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VC_CHARS_BEFORE_SHAPING,
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VC_CHARS_AFTER_SHAPING,
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VC_GLYPHS_AUTO,
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VC_GLYPHS_LTR,
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VC_GLYPHS_RTL,
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};
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protected:
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void _notification(int p_what);
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static void _bind_methods();
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private:
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struct Item;
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struct Line {
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Item *from = nullptr;
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Ref<TextParagraph> text_buf;
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Color dc_color;
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int dc_ol_size = 0;
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Color dc_ol_color;
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Vector2 offset;
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int char_offset = 0;
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int char_count = 0;
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Line() { text_buf.instantiate(); }
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};
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struct Item {
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int index = 0;
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int char_ofs = 0;
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Item *parent = nullptr;
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ItemType type = ITEM_FRAME;
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List<Item *> subitems;
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List<Item *>::Element *E = nullptr;
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int line = 0;
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void _clear_children() {
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while (subitems.size()) {
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memdelete(subitems.front()->get());
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subitems.pop_front();
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}
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}
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virtual ~Item() { _clear_children(); }
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};
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struct ItemFrame : public Item {
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bool cell = false;
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Vector<Line> lines;
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int first_invalid_line = 0;
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int first_resized_line = 0;
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ItemFrame *parent_frame = nullptr;
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Color odd_row_bg = Color(0, 0, 0, 0);
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Color even_row_bg = Color(0, 0, 0, 0);
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Color border = Color(0, 0, 0, 0);
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Size2 min_size_over = Size2(-1, -1);
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Size2 max_size_over = Size2(-1, -1);
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Rect2 padding;
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ItemFrame() { type = ITEM_FRAME; }
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};
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struct ItemText : public Item {
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String text;
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ItemText() { type = ITEM_TEXT; }
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};
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struct ItemDropcap : public Item {
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String text;
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Ref<Font> font;
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int font_size = 0;
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Color color;
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int ol_size = 0;
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Color ol_color;
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Rect2 dropcap_margins;
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ItemDropcap() { type = ITEM_DROPCAP; }
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};
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struct ItemImage : public Item {
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Ref<Texture2D> image;
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InlineAlignment inline_align = INLINE_ALIGNMENT_CENTER;
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Size2 size;
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Color color;
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ItemImage() { type = ITEM_IMAGE; }
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};
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struct ItemFont : public Item {
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Ref<Font> font;
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ItemFont() { type = ITEM_FONT; }
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};
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struct ItemFontSize : public Item {
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int font_size = 16;
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ItemFontSize() { type = ITEM_FONT_SIZE; }
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};
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struct ItemFontFeatures : public Item {
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Dictionary opentype_features;
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ItemFontFeatures() { type = ITEM_FONT_FEATURES; }
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};
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struct ItemColor : public Item {
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Color color;
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ItemColor() { type = ITEM_COLOR; }
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};
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struct ItemOutlineSize : public Item {
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int outline_size = 0;
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ItemOutlineSize() { type = ITEM_OUTLINE_SIZE; }
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};
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struct ItemOutlineColor : public Item {
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Color color;
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ItemOutlineColor() { type = ITEM_OUTLINE_COLOR; }
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};
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struct ItemUnderline : public Item {
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ItemUnderline() { type = ITEM_UNDERLINE; }
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};
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struct ItemStrikethrough : public Item {
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ItemStrikethrough() { type = ITEM_STRIKETHROUGH; }
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};
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struct ItemMeta : public Item {
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Variant meta;
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ItemMeta() { type = ITEM_META; }
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};
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struct ItemParagraph : public Item {
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HorizontalAlignment alignment = HORIZONTAL_ALIGNMENT_LEFT;
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String language;
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Control::TextDirection direction = Control::TEXT_DIRECTION_AUTO;
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Control::StructuredTextParser st_parser = STRUCTURED_TEXT_DEFAULT;
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ItemParagraph() { type = ITEM_PARAGRAPH; }
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};
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struct ItemIndent : public Item {
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int level = 0;
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ItemIndent() { type = ITEM_INDENT; }
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};
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struct ItemList : public Item {
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ListType list_type = LIST_DOTS;
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bool capitalize = false;
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int level = 0;
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ItemList() { type = ITEM_LIST; }
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};
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struct ItemNewline : public Item {
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ItemNewline() { type = ITEM_NEWLINE; }
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};
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struct ItemTable : public Item {
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struct Column {
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bool expand = false;
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int expand_ratio = 0;
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int min_width = 0;
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int max_width = 0;
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int width = 0;
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};
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Vector<Column> columns;
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Vector<float> rows;
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int total_width = 0;
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int total_height = 0;
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InlineAlignment inline_align = INLINE_ALIGNMENT_TOP;
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ItemTable() { type = ITEM_TABLE; }
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};
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struct ItemFade : public Item {
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int starting_index = 0;
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int length = 0;
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ItemFade() { type = ITEM_FADE; }
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};
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struct ItemFX : public Item {
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double elapsed_time = 0.f;
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};
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struct ItemShake : public ItemFX {
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int strength = 0;
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float rate = 0.0f;
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uint64_t _current_rng = 0;
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uint64_t _previous_rng = 0;
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Vector2 prev_off;
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ItemShake() { type = ITEM_SHAKE; }
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void reroll_random() {
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_previous_rng = _current_rng;
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_current_rng = Math::rand();
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}
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uint64_t offset_random(int index) {
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return (_current_rng >> (index % 64)) |
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(_current_rng << (64 - (index % 64)));
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}
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uint64_t offset_previous_random(int index) {
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return (_previous_rng >> (index % 64)) |
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(_previous_rng << (64 - (index % 64)));
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}
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};
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struct ItemWave : public ItemFX {
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float frequency = 1.0f;
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float amplitude = 1.0f;
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Vector2 prev_off;
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ItemWave() { type = ITEM_WAVE; }
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};
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struct ItemTornado : public ItemFX {
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float radius = 1.0f;
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float frequency = 1.0f;
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Vector2 prev_off;
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ItemTornado() { type = ITEM_TORNADO; }
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};
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struct ItemRainbow : public ItemFX {
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float saturation = 0.8f;
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float value = 0.8f;
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float frequency = 1.0f;
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ItemRainbow() { type = ITEM_RAINBOW; }
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};
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struct ItemBGColor : public Item {
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Color color;
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ItemBGColor() { type = ITEM_BGCOLOR; }
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};
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struct ItemFGColor : public Item {
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Color color;
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ItemFGColor() { type = ITEM_FGCOLOR; }
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};
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struct ItemCustomFX : public ItemFX {
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Ref<CharFXTransform> char_fx_transform;
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Ref<RichTextEffect> custom_effect;
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ItemCustomFX() {
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type = ITEM_CUSTOMFX;
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char_fx_transform.instantiate();
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}
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virtual ~ItemCustomFX() {
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_clear_children();
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char_fx_transform.unref();
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custom_effect.unref();
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}
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};
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ItemFrame *main = nullptr;
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Item *current = nullptr;
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ItemFrame *current_frame = nullptr;
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VScrollBar *vscroll = nullptr;
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bool scroll_visible = false;
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bool scroll_follow = false;
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bool scroll_following = false;
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bool scroll_active = true;
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int scroll_w = 0;
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bool scroll_updated = false;
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bool updating_scroll = false;
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int current_idx = 1;
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int current_char_ofs = 0;
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int visible_paragraph_count = 0;
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int visible_line_count = 0;
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int tab_size = 4;
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bool underline_meta = true;
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bool override_selected_font_color = false;
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HorizontalAlignment default_alignment = HORIZONTAL_ALIGNMENT_LEFT;
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ItemMeta *meta_hovering = nullptr;
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Variant current_meta;
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Array custom_effects;
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void _invalidate_current_line(ItemFrame *p_frame);
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void _validate_line_caches(ItemFrame *p_frame);
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void _add_item(Item *p_item, bool p_enter = false, bool p_ensure_newline = false);
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void _remove_item(Item *p_item, const int p_line, const int p_subitem_line);
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String language;
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TextDirection text_direction = TEXT_DIRECTION_AUTO;
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Control::StructuredTextParser st_parser = STRUCTURED_TEXT_DEFAULT;
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Array st_args;
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struct Selection {
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ItemFrame *click_frame = nullptr;
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int click_line = 0;
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Item *click_item = nullptr;
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int click_char = 0;
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ItemFrame *from_frame = nullptr;
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int from_line = 0;
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Item *from_item = nullptr;
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int from_char = 0;
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ItemFrame *to_frame = nullptr;
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int to_line = 0;
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Item *to_item = nullptr;
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int to_char = 0;
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bool active = false; // anything selected? i.e. from, to, etc. valid?
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bool enabled = false; // allow selections?
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};
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Selection selection;
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bool deselect_on_focus_loss_enabled = true;
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int visible_characters = -1;
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float percent_visible = 1.0;
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VisibleCharactersBehavior visible_chars_behavior = VC_CHARS_BEFORE_SHAPING;
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void _find_click(ItemFrame *p_frame, const Point2i &p_click, ItemFrame **r_click_frame = nullptr, int *r_click_line = nullptr, Item **r_click_item = nullptr, int *r_click_char = nullptr, bool *r_outside = nullptr);
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String _get_line_text(ItemFrame *p_frame, int p_line, Selection p_sel) const;
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bool _search_line(ItemFrame *p_frame, int p_line, const String &p_string, int p_char_idx, bool p_reverse_search);
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bool _search_table(ItemTable *p_table, List<Item *>::Element *p_from, const String &p_string, bool p_reverse_search);
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void _shape_line(ItemFrame *p_frame, int p_line, const Ref<Font> &p_base_font, int p_base_font_size, int p_width, int *r_char_offset);
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void _resize_line(ItemFrame *p_frame, int p_line, const Ref<Font> &p_base_font, int p_base_font_size, int p_width);
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int _draw_line(ItemFrame *p_frame, int p_line, const Vector2 &p_ofs, int p_width, const Color &p_base_color, int p_outline_size, const Color &p_outline_color, const Color &p_font_shadow_color, int p_shadow_outline_size, const Point2 &p_shadow_ofs, int &r_processed_glyphs);
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float _find_click_in_line(ItemFrame *p_frame, int p_line, const Vector2 &p_ofs, int p_width, const Point2i &p_click, ItemFrame **r_click_frame = nullptr, int *r_click_line = nullptr, Item **r_click_item = nullptr, int *r_click_char = nullptr);
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String _roman(int p_num, bool p_capitalize) const;
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String _letters(int p_num, bool p_capitalize) const;
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Item *_get_item_at_pos(Item *p_item_from, Item *p_item_to, int p_position);
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void _find_frame(Item *p_item, ItemFrame **r_frame, int *r_line);
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Ref<Font> _find_font(Item *p_item);
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int _find_font_size(Item *p_item);
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Dictionary _find_font_features(Item *p_item);
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int _find_outline_size(Item *p_item, int p_default);
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ItemList *_find_list_item(Item *p_item);
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ItemDropcap *_find_dc_item(Item *p_item);
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int _find_list(Item *p_item, Vector<int> &r_index, Vector<ItemList *> &r_list);
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int _find_margin(Item *p_item, const Ref<Font> &p_base_font, int p_base_font_size);
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HorizontalAlignment _find_alignment(Item *p_item);
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TextServer::Direction _find_direction(Item *p_item);
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Control::StructuredTextParser _find_stt(Item *p_item);
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String _find_language(Item *p_item);
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Color _find_color(Item *p_item, const Color &p_default_color);
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Color _find_outline_color(Item *p_item, const Color &p_default_color);
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bool _find_underline(Item *p_item);
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bool _find_strikethrough(Item *p_item);
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bool _find_meta(Item *p_item, Variant *r_meta, ItemMeta **r_item = nullptr);
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Color _find_bgcolor(Item *p_item);
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Color _find_fgcolor(Item *p_item);
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bool _find_layout_subitem(Item *from, Item *to);
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void _fetch_item_fx_stack(Item *p_item, Vector<ItemFX *> &r_stack);
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void _update_scroll();
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void _update_fx(ItemFrame *p_frame, double p_delta_time);
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void _scroll_changed(double);
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virtual void gui_input(const Ref<InputEvent> &p_event) override;
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Item *_get_next_item(Item *p_item, bool p_free = false) const;
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Item *_get_prev_item(Item *p_item, bool p_free = false) const;
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Rect2 _get_text_rect();
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Ref<RichTextEffect> _get_custom_effect_by_code(String p_bbcode_identifier);
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virtual Dictionary parse_expressions_for_values(Vector<String> p_expressions);
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void _draw_fbg_boxes(RID p_ci, RID p_rid, Vector2 line_off, Item *it_from, Item *it_to, int start, int end, int fbg_flag);
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#ifndef DISABLE_DEPRECATED
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// Kept for compatibility from 3.x to 4.0.
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bool _set(const StringName &p_name, const Variant &p_value);
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#endif
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bool use_bbcode = false;
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String text;
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int fixed_width = -1;
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bool fit_content_height = false;
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public:
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String get_parsed_text() const;
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void add_text(const String &p_text);
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void add_image(const Ref<Texture2D> &p_image, const int p_width = 0, const int p_height = 0, const Color &p_color = Color(1.0, 1.0, 1.0), InlineAlignment p_alignment = INLINE_ALIGNMENT_CENTER);
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void add_newline();
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bool remove_line(const int p_line);
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void push_dropcap(const String &p_string, const Ref<Font> &p_font, int p_size, const Rect2 &p_dropcap_margins = Rect2(), const Color &p_color = Color(1, 1, 1), int p_ol_size = 0, const Color &p_ol_color = Color(0, 0, 0, 0));
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void push_font(const Ref<Font> &p_font);
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void push_font_size(int p_font_size);
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void push_font_features(const Dictionary &p_features);
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void push_outline_size(int p_font_size);
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void push_normal();
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void push_bold();
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void push_bold_italics();
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void push_italics();
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void push_mono();
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void push_color(const Color &p_color);
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void push_outline_color(const Color &p_color);
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void push_underline();
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void push_strikethrough();
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void push_paragraph(HorizontalAlignment p_alignment, Control::TextDirection p_direction = Control::TEXT_DIRECTION_INHERITED, const String &p_language = "", Control::StructuredTextParser p_st_parser = STRUCTURED_TEXT_DEFAULT);
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void push_indent(int p_level);
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void push_list(int p_level, ListType p_list, bool p_capitalize);
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void push_meta(const Variant &p_meta);
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void push_table(int p_columns, InlineAlignment p_alignment = INLINE_ALIGNMENT_TOP);
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void push_fade(int p_start_index, int p_length);
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void push_shake(int p_strength, float p_rate);
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void push_wave(float p_frequency, float p_amplitude);
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void push_tornado(float p_frequency, float p_radius);
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void push_rainbow(float p_saturation, float p_value, float p_frequency);
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void push_bgcolor(const Color &p_color);
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void push_fgcolor(const Color &p_color);
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void push_customfx(Ref<RichTextEffect> p_custom_effect, Dictionary p_environment);
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void set_table_column_expand(int p_column, bool p_expand, int p_ratio = 1);
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void set_cell_row_background_color(const Color &p_odd_row_bg, const Color &p_even_row_bg);
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void set_cell_border_color(const Color &p_color);
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void set_cell_size_override(const Size2 &p_min_size, const Size2 &p_max_size);
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void set_cell_padding(const Rect2 &p_padding);
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int get_current_table_column() const;
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void push_cell();
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void pop();
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void clear();
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void set_offset(int p_pixel);
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void set_meta_underline(bool p_underline);
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bool is_meta_underlined() const;
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void set_override_selected_font_color(bool p_override_selected_font_color);
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bool is_overriding_selected_font_color() const;
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void set_scroll_active(bool p_active);
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bool is_scroll_active() const;
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void set_scroll_follow(bool p_follow);
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bool is_scroll_following() const;
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void set_tab_size(int p_spaces);
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int get_tab_size() const;
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void set_fit_content_height(bool p_enabled);
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bool is_fit_content_height_enabled() const;
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bool search(const String &p_string, bool p_from_selection = false, bool p_search_previous = false);
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void scroll_to_paragraph(int p_paragraph);
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int get_paragraph_count() const;
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int get_visible_paragraph_count() const;
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void scroll_to_line(int p_line);
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int get_line_count() const;
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int get_visible_line_count() const;
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int get_content_height() const;
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VScrollBar *get_v_scroll() { return vscroll; }
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virtual CursorShape get_cursor_shape(const Point2 &p_pos) const override;
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void set_selection_enabled(bool p_enabled);
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bool is_selection_enabled() const;
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int get_selection_from() const;
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int get_selection_to() const;
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String get_selected_text() const;
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void selection_copy();
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void set_deselect_on_focus_loss_enabled(const bool p_enabled);
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bool is_deselect_on_focus_loss_enabled() const;
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void parse_bbcode(const String &p_bbcode);
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void append_text(const String &p_bbcode);
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void set_use_bbcode(bool p_enable);
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bool is_using_bbcode() const;
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void set_text(const String &p_bbcode);
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String get_text() const;
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void set_text_direction(TextDirection p_text_direction);
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TextDirection get_text_direction() const;
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void set_language(const String &p_language);
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String get_language() const;
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void set_structured_text_bidi_override(Control::StructuredTextParser p_parser);
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Control::StructuredTextParser get_structured_text_bidi_override() const;
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void set_structured_text_bidi_override_options(Array p_args);
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Array get_structured_text_bidi_override_options() const;
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void set_visible_characters(int p_visible);
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int get_visible_characters() const;
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int get_total_character_count() const;
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int get_total_glyph_count() const;
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void set_percent_visible(float p_percent);
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float get_percent_visible() const;
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VisibleCharactersBehavior get_visible_characters_behavior() const;
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void set_visible_characters_behavior(VisibleCharactersBehavior p_behavior);
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void set_effects(Array p_effects);
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Array get_effects();
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void install_effect(const Variant effect);
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void set_fixed_size_to_width(int p_width);
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virtual Size2 get_minimum_size() const override;
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RichTextLabel();
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~RichTextLabel();
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};
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VARIANT_ENUM_CAST(RichTextLabel::ListType);
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VARIANT_ENUM_CAST(RichTextLabel::ItemType);
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VARIANT_ENUM_CAST(RichTextLabel::VisibleCharactersBehavior);
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#endif // RICH_TEXT_LABEL_H
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