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487 lines
18 KiB
C++
487 lines
18 KiB
C++
/**************************************************************************/
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/* text_line.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 "text_line.h"
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void TextLine::_bind_methods() {
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ClassDB::bind_method(D_METHOD("clear"), &TextLine::clear);
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ClassDB::bind_method(D_METHOD("set_direction", "direction"), &TextLine::set_direction);
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ClassDB::bind_method(D_METHOD("get_direction"), &TextLine::get_direction);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "direction", PROPERTY_HINT_ENUM, "Auto,Left-to-right,Right-to-left"), "set_direction", "get_direction");
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ClassDB::bind_method(D_METHOD("set_orientation", "orientation"), &TextLine::set_orientation);
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ClassDB::bind_method(D_METHOD("get_orientation"), &TextLine::get_orientation);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "orientation", PROPERTY_HINT_ENUM, "Horizontal,Orientation"), "set_orientation", "get_orientation");
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ClassDB::bind_method(D_METHOD("set_preserve_invalid", "enabled"), &TextLine::set_preserve_invalid);
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ClassDB::bind_method(D_METHOD("get_preserve_invalid"), &TextLine::get_preserve_invalid);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "preserve_invalid"), "set_preserve_invalid", "get_preserve_invalid");
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ClassDB::bind_method(D_METHOD("set_preserve_control", "enabled"), &TextLine::set_preserve_control);
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ClassDB::bind_method(D_METHOD("get_preserve_control"), &TextLine::get_preserve_control);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "preserve_control"), "set_preserve_control", "get_preserve_control");
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ClassDB::bind_method(D_METHOD("set_bidi_override", "override"), &TextLine::set_bidi_override);
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ClassDB::bind_method(D_METHOD("add_string", "text", "font", "font_size", "language", "meta"), &TextLine::add_string, DEFVAL(""), DEFVAL(Variant()));
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ClassDB::bind_method(D_METHOD("add_object", "key", "size", "inline_align", "length", "baseline"), &TextLine::add_object, DEFVAL(INLINE_ALIGNMENT_CENTER), DEFVAL(1), DEFVAL(0.0));
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ClassDB::bind_method(D_METHOD("resize_object", "key", "size", "inline_align", "baseline"), &TextLine::resize_object, DEFVAL(INLINE_ALIGNMENT_CENTER), DEFVAL(0.0));
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ClassDB::bind_method(D_METHOD("set_width", "width"), &TextLine::set_width);
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ClassDB::bind_method(D_METHOD("get_width"), &TextLine::get_width);
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "width"), "set_width", "get_width");
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ClassDB::bind_method(D_METHOD("set_horizontal_alignment", "alignment"), &TextLine::set_horizontal_alignment);
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ClassDB::bind_method(D_METHOD("get_horizontal_alignment"), &TextLine::get_horizontal_alignment);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "alignment", PROPERTY_HINT_ENUM, "Left,Center,Right,Fill"), "set_horizontal_alignment", "get_horizontal_alignment");
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ClassDB::bind_method(D_METHOD("tab_align", "tab_stops"), &TextLine::tab_align);
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ClassDB::bind_method(D_METHOD("set_flags", "flags"), &TextLine::set_flags);
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ClassDB::bind_method(D_METHOD("get_flags"), &TextLine::get_flags);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "flags", PROPERTY_HINT_FLAGS, "Kashida Justification,Word Justification,Trim Edge Spaces After Justification,Justify Only After Last Tab,Constrain Ellipsis"), "set_flags", "get_flags");
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ClassDB::bind_method(D_METHOD("set_text_overrun_behavior", "overrun_behavior"), &TextLine::set_text_overrun_behavior);
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ClassDB::bind_method(D_METHOD("get_text_overrun_behavior"), &TextLine::get_text_overrun_behavior);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "text_overrun_behavior", PROPERTY_HINT_ENUM, "Trim Nothing,Trim Characters,Trim Words,Ellipsis,Word Ellipsis"), "set_text_overrun_behavior", "get_text_overrun_behavior");
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ClassDB::bind_method(D_METHOD("set_ellipsis_char", "char"), &TextLine::set_ellipsis_char);
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ClassDB::bind_method(D_METHOD("get_ellipsis_char"), &TextLine::get_ellipsis_char);
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ADD_PROPERTY(PropertyInfo(Variant::STRING, "ellipsis_char"), "set_ellipsis_char", "get_ellipsis_char");
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ClassDB::bind_method(D_METHOD("get_objects"), &TextLine::get_objects);
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ClassDB::bind_method(D_METHOD("get_object_rect", "key"), &TextLine::get_object_rect);
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ClassDB::bind_method(D_METHOD("get_size"), &TextLine::get_size);
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ClassDB::bind_method(D_METHOD("get_rid"), &TextLine::get_rid);
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ClassDB::bind_method(D_METHOD("get_line_ascent"), &TextLine::get_line_ascent);
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ClassDB::bind_method(D_METHOD("get_line_descent"), &TextLine::get_line_descent);
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ClassDB::bind_method(D_METHOD("get_line_width"), &TextLine::get_line_width);
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ClassDB::bind_method(D_METHOD("get_line_underline_position"), &TextLine::get_line_underline_position);
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ClassDB::bind_method(D_METHOD("get_line_underline_thickness"), &TextLine::get_line_underline_thickness);
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ClassDB::bind_method(D_METHOD("draw", "canvas", "pos", "color"), &TextLine::draw, DEFVAL(Color(1, 1, 1)));
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ClassDB::bind_method(D_METHOD("draw_outline", "canvas", "pos", "outline_size", "color"), &TextLine::draw_outline, DEFVAL(1), DEFVAL(Color(1, 1, 1)));
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ClassDB::bind_method(D_METHOD("hit_test", "coords"), &TextLine::hit_test);
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}
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void TextLine::_shape() {
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// When a shaped text is invalidated by an external source, we want to reshape it.
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if (!TS->shaped_text_is_ready(rid)) {
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dirty = true;
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}
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if (dirty) {
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if (!tab_stops.is_empty()) {
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TS->shaped_text_tab_align(rid, tab_stops);
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}
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BitField<TextServer::TextOverrunFlag> overrun_flags = TextServer::OVERRUN_NO_TRIM;
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if (overrun_behavior != TextServer::OVERRUN_NO_TRIMMING) {
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switch (overrun_behavior) {
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case TextServer::OVERRUN_TRIM_WORD_ELLIPSIS:
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overrun_flags.set_flag(TextServer::OVERRUN_TRIM);
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overrun_flags.set_flag(TextServer::OVERRUN_TRIM_WORD_ONLY);
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overrun_flags.set_flag(TextServer::OVERRUN_ADD_ELLIPSIS);
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break;
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case TextServer::OVERRUN_TRIM_ELLIPSIS:
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overrun_flags.set_flag(TextServer::OVERRUN_TRIM);
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overrun_flags.set_flag(TextServer::OVERRUN_ADD_ELLIPSIS);
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break;
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case TextServer::OVERRUN_TRIM_WORD:
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overrun_flags.set_flag(TextServer::OVERRUN_TRIM);
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overrun_flags.set_flag(TextServer::OVERRUN_TRIM_WORD_ONLY);
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break;
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case TextServer::OVERRUN_TRIM_CHAR:
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overrun_flags.set_flag(TextServer::OVERRUN_TRIM);
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break;
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case TextServer::OVERRUN_NO_TRIMMING:
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break;
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}
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if (alignment == HORIZONTAL_ALIGNMENT_FILL) {
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TS->shaped_text_fit_to_width(rid, width, flags);
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overrun_flags.set_flag(TextServer::OVERRUN_JUSTIFICATION_AWARE);
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TS->shaped_text_set_custom_ellipsis(rid, (el_char.length() > 0) ? el_char[0] : 0x2026);
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TS->shaped_text_overrun_trim_to_width(rid, width, overrun_flags);
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} else {
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TS->shaped_text_set_custom_ellipsis(rid, (el_char.length() > 0) ? el_char[0] : 0x2026);
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TS->shaped_text_overrun_trim_to_width(rid, width, overrun_flags);
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}
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} else if (alignment == HORIZONTAL_ALIGNMENT_FILL) {
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TS->shaped_text_fit_to_width(rid, width, flags);
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}
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dirty = false;
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}
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}
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RID TextLine::get_rid() const {
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return rid;
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}
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void TextLine::clear() {
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TS->shaped_text_clear(rid);
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}
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void TextLine::set_preserve_invalid(bool p_enabled) {
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TS->shaped_text_set_preserve_invalid(rid, p_enabled);
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dirty = true;
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}
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bool TextLine::get_preserve_invalid() const {
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return TS->shaped_text_get_preserve_invalid(rid);
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}
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void TextLine::set_preserve_control(bool p_enabled) {
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TS->shaped_text_set_preserve_control(rid, p_enabled);
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dirty = true;
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}
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bool TextLine::get_preserve_control() const {
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return TS->shaped_text_get_preserve_control(rid);
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}
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void TextLine::set_direction(TextServer::Direction p_direction) {
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TS->shaped_text_set_direction(rid, p_direction);
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dirty = true;
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}
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TextServer::Direction TextLine::get_direction() const {
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return TS->shaped_text_get_direction(rid);
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}
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void TextLine::set_orientation(TextServer::Orientation p_orientation) {
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TS->shaped_text_set_orientation(rid, p_orientation);
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dirty = true;
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}
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TextServer::Orientation TextLine::get_orientation() const {
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return TS->shaped_text_get_orientation(rid);
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}
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void TextLine::set_bidi_override(const Array &p_override) {
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TS->shaped_text_set_bidi_override(rid, p_override);
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dirty = true;
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}
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bool TextLine::add_string(const String &p_text, const Ref<Font> &p_font, int p_font_size, const String &p_language, const Variant &p_meta) {
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ERR_FAIL_COND_V(p_font.is_null(), false);
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bool res = TS->shaped_text_add_string(rid, p_text, p_font->get_rids(), p_font_size, p_font->get_opentype_features(), p_language, p_meta);
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dirty = true;
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return res;
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}
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bool TextLine::add_object(Variant p_key, const Size2 &p_size, InlineAlignment p_inline_align, int p_length, float p_baseline) {
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bool res = TS->shaped_text_add_object(rid, p_key, p_size, p_inline_align, p_length, p_baseline);
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dirty = true;
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return res;
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}
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bool TextLine::resize_object(Variant p_key, const Size2 &p_size, InlineAlignment p_inline_align, float p_baseline) {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_resize_object(rid, p_key, p_size, p_inline_align, p_baseline);
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}
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Array TextLine::get_objects() const {
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return TS->shaped_text_get_objects(rid);
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}
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Rect2 TextLine::get_object_rect(Variant p_key) const {
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Vector2 ofs;
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float length = TS->shaped_text_get_width(rid);
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if (width > 0) {
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switch (alignment) {
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case HORIZONTAL_ALIGNMENT_FILL:
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case HORIZONTAL_ALIGNMENT_LEFT:
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break;
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case HORIZONTAL_ALIGNMENT_CENTER: {
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if (length <= width) {
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.x += Math::floor((width - length) / 2.0);
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} else {
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ofs.y += Math::floor((width - length) / 2.0);
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}
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} else if (TS->shaped_text_get_inferred_direction(rid) == TextServer::DIRECTION_RTL) {
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.x += width - length;
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} else {
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ofs.y += width - length;
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}
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}
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} break;
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case HORIZONTAL_ALIGNMENT_RIGHT: {
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.x += width - length;
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} else {
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ofs.y += width - length;
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}
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} break;
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}
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}
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.y += TS->shaped_text_get_ascent(rid);
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} else {
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ofs.x += TS->shaped_text_get_ascent(rid);
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}
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Rect2 rect = TS->shaped_text_get_object_rect(rid, p_key);
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rect.position += ofs;
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return rect;
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}
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void TextLine::set_horizontal_alignment(HorizontalAlignment p_alignment) {
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if (alignment != p_alignment) {
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if (alignment == HORIZONTAL_ALIGNMENT_FILL || p_alignment == HORIZONTAL_ALIGNMENT_FILL) {
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alignment = p_alignment;
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dirty = true;
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} else {
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alignment = p_alignment;
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}
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}
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}
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HorizontalAlignment TextLine::get_horizontal_alignment() const {
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return alignment;
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}
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void TextLine::tab_align(const Vector<float> &p_tab_stops) {
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tab_stops = p_tab_stops;
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dirty = true;
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}
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void TextLine::set_flags(BitField<TextServer::JustificationFlag> p_flags) {
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if (flags != p_flags) {
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flags = p_flags;
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dirty = true;
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}
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}
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BitField<TextServer::JustificationFlag> TextLine::get_flags() const {
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return flags;
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}
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void TextLine::set_text_overrun_behavior(TextServer::OverrunBehavior p_behavior) {
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if (overrun_behavior != p_behavior) {
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overrun_behavior = p_behavior;
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dirty = true;
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}
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}
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TextServer::OverrunBehavior TextLine::get_text_overrun_behavior() const {
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return overrun_behavior;
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}
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void TextLine::set_ellipsis_char(const String &p_char) {
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String c = p_char;
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if (c.length() > 1) {
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WARN_PRINT("Ellipsis must be exactly one character long (" + itos(c.length()) + " characters given).");
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c = c.left(1);
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}
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if (el_char == c) {
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return;
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}
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el_char = c;
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dirty = true;
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}
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String TextLine::get_ellipsis_char() const {
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return el_char;
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}
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void TextLine::set_width(float p_width) {
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width = p_width;
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if (alignment == HORIZONTAL_ALIGNMENT_FILL || overrun_behavior != TextServer::OVERRUN_NO_TRIMMING) {
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dirty = true;
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}
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}
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float TextLine::get_width() const {
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return width;
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}
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Size2 TextLine::get_size() const {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_get_size(rid);
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}
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float TextLine::get_line_ascent() const {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_get_ascent(rid);
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}
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float TextLine::get_line_descent() const {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_get_descent(rid);
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}
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float TextLine::get_line_width() const {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_get_width(rid);
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}
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float TextLine::get_line_underline_position() const {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_get_underline_position(rid);
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}
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float TextLine::get_line_underline_thickness() const {
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const_cast<TextLine *>(this)->_shape();
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return TS->shaped_text_get_underline_thickness(rid);
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}
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void TextLine::draw(RID p_canvas, const Vector2 &p_pos, const Color &p_color) const {
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const_cast<TextLine *>(this)->_shape();
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Vector2 ofs = p_pos;
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float length = TS->shaped_text_get_width(rid);
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if (width > 0) {
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switch (alignment) {
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case HORIZONTAL_ALIGNMENT_FILL:
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case HORIZONTAL_ALIGNMENT_LEFT:
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break;
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case HORIZONTAL_ALIGNMENT_CENTER: {
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if (length <= width) {
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.x += Math::floor((width - length) / 2.0);
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} else {
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ofs.y += Math::floor((width - length) / 2.0);
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}
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} else if (TS->shaped_text_get_inferred_direction(rid) == TextServer::DIRECTION_RTL) {
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.x += width - length;
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} else {
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ofs.y += width - length;
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}
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}
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} break;
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case HORIZONTAL_ALIGNMENT_RIGHT: {
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.x += width - length;
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} else {
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ofs.y += width - length;
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}
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} break;
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}
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}
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float clip_l;
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if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
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ofs.y += TS->shaped_text_get_ascent(rid);
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clip_l = MAX(0, p_pos.x - ofs.x);
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} else {
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ofs.x += TS->shaped_text_get_ascent(rid);
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clip_l = MAX(0, p_pos.y - ofs.y);
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}
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return TS->shaped_text_draw(rid, p_canvas, ofs, clip_l, clip_l + width, p_color);
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}
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void TextLine::draw_outline(RID p_canvas, const Vector2 &p_pos, int p_outline_size, const Color &p_color) const {
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const_cast<TextLine *>(this)->_shape();
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Vector2 ofs = p_pos;
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float length = TS->shaped_text_get_width(rid);
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if (width > 0) {
|
|
switch (alignment) {
|
|
case HORIZONTAL_ALIGNMENT_FILL:
|
|
case HORIZONTAL_ALIGNMENT_LEFT:
|
|
break;
|
|
case HORIZONTAL_ALIGNMENT_CENTER: {
|
|
if (length <= width) {
|
|
if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
|
|
ofs.x += Math::floor((width - length) / 2.0);
|
|
} else {
|
|
ofs.y += Math::floor((width - length) / 2.0);
|
|
}
|
|
} else if (TS->shaped_text_get_inferred_direction(rid) == TextServer::DIRECTION_RTL) {
|
|
if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
|
|
ofs.x += width - length;
|
|
} else {
|
|
ofs.y += width - length;
|
|
}
|
|
}
|
|
} break;
|
|
case HORIZONTAL_ALIGNMENT_RIGHT: {
|
|
if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
|
|
ofs.x += width - length;
|
|
} else {
|
|
ofs.y += width - length;
|
|
}
|
|
} break;
|
|
}
|
|
}
|
|
|
|
float clip_l;
|
|
if (TS->shaped_text_get_orientation(rid) == TextServer::ORIENTATION_HORIZONTAL) {
|
|
ofs.y += TS->shaped_text_get_ascent(rid);
|
|
clip_l = MAX(0, p_pos.x - ofs.x);
|
|
} else {
|
|
ofs.x += TS->shaped_text_get_ascent(rid);
|
|
clip_l = MAX(0, p_pos.y - ofs.y);
|
|
}
|
|
return TS->shaped_text_draw_outline(rid, p_canvas, ofs, clip_l, clip_l + width, p_outline_size, p_color);
|
|
}
|
|
|
|
int TextLine::hit_test(float p_coords) const {
|
|
const_cast<TextLine *>(this)->_shape();
|
|
|
|
return TS->shaped_text_hit_test_position(rid, p_coords);
|
|
}
|
|
|
|
TextLine::TextLine(const String &p_text, const Ref<Font> &p_font, int p_font_size, const String &p_language, TextServer::Direction p_direction, TextServer::Orientation p_orientation) {
|
|
rid = TS->create_shaped_text(p_direction, p_orientation);
|
|
if (p_font.is_valid()) {
|
|
TS->shaped_text_add_string(rid, p_text, p_font->get_rids(), p_font_size, p_font->get_opentype_features(), p_language);
|
|
}
|
|
}
|
|
|
|
TextLine::TextLine() {
|
|
rid = TS->create_shaped_text();
|
|
}
|
|
|
|
TextLine::~TextLine() {
|
|
TS->free_rid(rid);
|
|
}
|