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palera1n/src/tui/TuiText.hpp
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/*
* palera1n - https://palera.in
*
* Copyright (C) 2026 palera1n team
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifdef WITH_TUI
#ifndef P1__TUI_TEXT_HPP
#define P1__TUI_TEXT_HPP
#include <ncurses.h>
#include <string>
#include <vector>
namespace tui_text {
inline void append_wrapped_lines(const std::string& text, int width, std::vector<std::string>& out) {
if (width <= 0) {
return;
}
size_t start = 0;
while (start <= text.size()) {
size_t end = text.find('\n', start);
if (end == std::string::npos) {
end = text.size();
}
std::string paragraph = text.substr(start, end - start);
size_t cursor = 0;
if (paragraph.empty()) {
out.push_back("");
}
while (cursor < paragraph.size()) {
size_t remaining = paragraph.size() - cursor;
if (remaining <= static_cast<size_t>(width)) {
out.push_back(paragraph.substr(cursor));
break;
}
size_t cut = cursor + static_cast<size_t>(width);
size_t split = paragraph.rfind(' ', cut);
if (split == std::string::npos || split <= cursor) {
split = cut;
}
out.push_back(paragraph.substr(cursor, split - cursor));
cursor = split;
while (cursor < paragraph.size() && paragraph[cursor] == ' ') {
++cursor;
}
}
if (end == text.size()) {
break;
}
start = end + 1;
}
}
inline int draw_wrapped_text(int y, int x, int width, const std::string& text, int max_lines = 0) {
if (width <= 0 || text.empty()) {
return 0;
}
std::vector<std::string> lines;
append_wrapped_lines(text, width, lines);
int rendered = 0;
for (const auto& line : lines) {
if (max_lines > 0 && rendered >= max_lines) {
break;
}
mvprintw(y + rendered, x, "%.*s", width, line.c_str());
++rendered;
}
return rendered;
}
} // namespace tui_text
#endif // P1__TUI_TEXT_HPP
#endif // WITH_TUI