mirror of
https://github.com/ArthurSonzogni/FTXUI.git
synced 2025-05-06 07:33:07 +08:00
480 lines
13 KiB
C++
480 lines
13 KiB
C++
#include <stdint.h> // for uint16_t
|
|
#include <iostream> // for operator<<, stringstream, basic_ostream, flush, cout, ostream
|
|
#include <map> // for _Rb_tree_const_iterator, map, operator!=, operator==
|
|
#include <memory> // for allocator, allocator_traits<>::value_type
|
|
#include <sstream> // IWYU pragma: keep
|
|
#include <utility> // for pair
|
|
|
|
#include "ftxui/screen/screen.hpp"
|
|
#include "ftxui/screen/string.hpp" // for string_width
|
|
#include "ftxui/screen/terminal.hpp" // for Dimensions, Size
|
|
|
|
#if defined(_WIN32)
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#ifndef NOMINMAX
|
|
#define NOMINMAX
|
|
#endif
|
|
#include <Windows.h>
|
|
#endif
|
|
|
|
namespace ftxui {
|
|
|
|
namespace {
|
|
static const char BOLD_SET[] = "\x1B[1m";
|
|
static const char BOLD_RESET[] = "\x1B[22m"; // Can't use 21 here.
|
|
|
|
static const char DIM_SET[] = "\x1B[2m";
|
|
static const char DIM_RESET[] = "\x1B[22m";
|
|
|
|
static const char UNDERLINED_SET[] = "\x1B[4m";
|
|
static const char UNDERLINED_RESET[] = "\x1B[24m";
|
|
|
|
static const char BLINK_SET[] = "\x1B[5m";
|
|
static const char BLINK_RESET[] = "\x1B[25m";
|
|
|
|
static const char INVERTED_SET[] = "\x1B[7m";
|
|
static const char INVERTED_RESET[] = "\x1B[27m";
|
|
|
|
static const char MOVE_LEFT[] = "\r";
|
|
static const char MOVE_UP[] = "\x1B[1A";
|
|
static const char CLEAR_LINE[] = "\x1B[2K";
|
|
|
|
Pixel dev_null_pixel;
|
|
|
|
#if defined(_WIN32)
|
|
void WindowsEmulateVT100Terminal() {
|
|
static bool done = false;
|
|
if (done)
|
|
return;
|
|
done = true;
|
|
|
|
// Enable VT processing on stdout and stdin
|
|
auto stdout_handle = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
|
|
DWORD out_mode = 0;
|
|
GetConsoleMode(stdout_handle, &out_mode);
|
|
|
|
// https://docs.microsoft.com/en-us/windows/console/setconsolemode
|
|
const int enable_virtual_terminal_processing = 0x0004;
|
|
const int disable_newline_auto_return = 0x0008;
|
|
out_mode |= enable_virtual_terminal_processing;
|
|
out_mode |= disable_newline_auto_return;
|
|
|
|
SetConsoleMode(stdout_handle, out_mode);
|
|
}
|
|
#endif
|
|
|
|
void UpdatePixelStyle(std::stringstream& ss,
|
|
Pixel& previous,
|
|
const Pixel& next) {
|
|
if (next.bold != previous.bold)
|
|
ss << (next.bold ? BOLD_SET : BOLD_RESET);
|
|
|
|
if (next.dim != previous.dim)
|
|
ss << (next.dim ? DIM_SET : DIM_RESET);
|
|
|
|
if (next.underlined != previous.underlined)
|
|
ss << (next.underlined ? UNDERLINED_SET : UNDERLINED_RESET);
|
|
|
|
if (next.blink != previous.blink)
|
|
ss << (next.blink ? BLINK_SET : BLINK_RESET);
|
|
|
|
if (next.inverted != previous.inverted)
|
|
ss << (next.inverted ? INVERTED_SET : INVERTED_RESET);
|
|
|
|
if (next.foreground_color != previous.foreground_color ||
|
|
next.background_color != previous.background_color) {
|
|
ss << "\x1B[" + next.foreground_color.Print(false) + "m";
|
|
ss << "\x1B[" + next.background_color.Print(true) + "m";
|
|
}
|
|
|
|
previous = next;
|
|
}
|
|
|
|
struct TileEncoding {
|
|
unsigned int left : 2;
|
|
unsigned int top : 2;
|
|
unsigned int right : 2;
|
|
unsigned int down : 2;
|
|
unsigned int round : 1;
|
|
|
|
bool operator<(const TileEncoding& other) const {
|
|
union Converter {
|
|
TileEncoding input;
|
|
uint16_t output = 0;
|
|
};
|
|
Converter a, b;
|
|
a.input = *this;
|
|
b.input = other;
|
|
return a.output < b.output;
|
|
}
|
|
};
|
|
|
|
// clang-format off
|
|
const std::map<std::string, TileEncoding> tile_encoding = {
|
|
{"─", {1, 0, 1, 0, 0}},
|
|
{"━", {2, 0, 2, 0, 0}},
|
|
|
|
{"│", {0, 1, 0, 1, 0}},
|
|
{"┃", {0, 2, 0, 2, 0}},
|
|
|
|
{"┌", {0, 0, 1, 1, 0}},
|
|
{"┍", {0, 0, 2, 1, 0}},
|
|
{"┎", {0, 0, 1, 2, 0}},
|
|
{"┏", {0, 0, 2, 2, 0}},
|
|
|
|
{"┐", {1, 0, 0, 1, 0}},
|
|
{"┑", {2, 0, 0, 1, 0}},
|
|
{"┒", {1, 0, 0, 2, 0}},
|
|
{"┓", {2, 0, 0, 2, 0}},
|
|
|
|
{"└", {0, 1, 1, 0, 0}},
|
|
{"┕", {0, 1, 2, 0, 0}},
|
|
{"┖", {0, 2, 1, 0, 0}},
|
|
{"┗", {0, 2, 2, 0, 0}},
|
|
|
|
{"┘", {1, 1, 0, 0, 0}},
|
|
{"┙", {2, 1, 0, 0, 0}},
|
|
{"┚", {1, 2, 0, 0, 0}},
|
|
{"┛", {2, 2, 0, 0, 0}},
|
|
|
|
{"├", {0, 1, 1, 1, 0}},
|
|
{"┝", {0, 1, 2, 1, 0}},
|
|
{"┞", {0, 2, 1, 1, 0}},
|
|
{"┟", {0, 1, 1, 2, 0}},
|
|
{"┠", {0, 2, 1, 2, 0}},
|
|
{"┡", {0, 2, 2, 1, 0}},
|
|
{"┢", {0, 1, 2, 2, 0}},
|
|
{"┣", {0, 2, 2, 2, 0}},
|
|
|
|
{"┤", {1, 1, 0, 1, 0}},
|
|
{"┥", {2, 1, 0, 1, 0}},
|
|
{"┦", {1, 2, 0, 1, 0}},
|
|
{"┧", {1, 1, 0, 2, 0}},
|
|
{"┨", {1, 2, 0, 2, 0}},
|
|
{"┩", {2, 2, 0, 1, 0}},
|
|
{"┪", {2, 1, 0, 2, 0}},
|
|
{"┫", {2, 2, 0, 2, 0}},
|
|
|
|
{"┬", {1, 0, 1, 1, 0}},
|
|
{"┭", {2, 0, 1, 1, 0}},
|
|
{"┮", {1, 0, 2, 1, 0}},
|
|
{"┯", {2, 0, 2, 1, 0}},
|
|
{"┰", {1, 0, 1, 2, 0}},
|
|
{"┱", {2, 0, 1, 2, 0}},
|
|
{"┲", {1, 0, 2, 2, 0}},
|
|
{"┳", {2, 0, 2, 2, 0}},
|
|
|
|
{"┴", {1, 1, 1, 0, 0}},
|
|
{"┵", {2, 1, 1, 0, 0}},
|
|
{"┶", {1, 1, 2, 0, 0}},
|
|
{"┷", {2, 1, 2, 0, 0}},
|
|
{"┸", {1, 2, 1, 0, 0}},
|
|
{"┹", {2, 2, 1, 0, 0}},
|
|
{"┺", {1, 2, 2, 0, 0}},
|
|
{"┻", {2, 2, 2, 0, 0}},
|
|
|
|
{"┼", {1, 1, 1, 1, 0}},
|
|
{"┽", {2, 1, 1, 1, 0}},
|
|
{"┾", {1, 1, 2, 1, 0}},
|
|
{"┿", {2, 1, 2, 1, 0}},
|
|
{"╀", {1, 2, 1, 1, 0}},
|
|
{"╁", {1, 1, 1, 2, 0}},
|
|
{"╂", {1, 2, 1, 2, 0}},
|
|
{"╃", {2, 2, 1, 1, 0}},
|
|
{"╄", {1, 2, 2, 1, 0}},
|
|
{"╅", {2, 1, 1, 2, 0}},
|
|
{"╆", {1, 1, 2, 2, 0}},
|
|
{"╇", {2, 2, 2, 1, 0}},
|
|
{"╈", {2, 1, 2, 2, 0}},
|
|
{"╉", {2, 2, 1, 2, 0}},
|
|
{"╊", {1, 2, 2, 2, 0}},
|
|
{"╋", {2, 2, 2, 2, 0}},
|
|
|
|
{"═", {3, 0, 3, 0, 0}},
|
|
{"║", {0, 3, 0, 3, 0}},
|
|
|
|
{"╒", {0, 0, 3, 1, 0}},
|
|
{"╓", {0, 0, 1, 3, 0}},
|
|
{"╔", {0, 0, 3, 3, 0}},
|
|
|
|
{"╕", {3, 0, 0, 1, 0}},
|
|
{"╖", {1, 0, 0, 3, 0}},
|
|
{"╗", {3, 0, 0, 3, 0}},
|
|
|
|
{"╘", {0, 1, 3, 0, 0}},
|
|
{"╙", {0, 3, 1, 0, 0}},
|
|
{"╚", {0, 3, 3, 0, 0}},
|
|
|
|
{"╛", {3, 1, 0, 0, 0}},
|
|
{"╜", {1, 3, 0, 0, 0}},
|
|
{"╝", {3, 3, 0, 0, 0}},
|
|
|
|
{"╞", {0, 1, 3, 1, 0}},
|
|
{"╟", {0, 3, 1, 3, 0}},
|
|
{"╠", {0, 3, 3, 3, 0}},
|
|
|
|
{"╡", {3, 1, 0, 1, 0}},
|
|
{"╢", {1, 3, 0, 3, 0}},
|
|
{"╣", {3, 3, 0, 3, 0}},
|
|
|
|
{"╤", {3, 0, 3, 1, 0}},
|
|
{"╥", {1, 0, 1, 3, 0}},
|
|
{"╦", {3, 0, 3, 3, 0}},
|
|
|
|
{"╧", {3, 1, 3, 0, 0}},
|
|
{"╨", {1, 3, 1, 0, 0}},
|
|
{"╩", {3, 3, 3, 0, 0}},
|
|
|
|
{"╪", {3, 1, 3, 1, 0}},
|
|
{"╫", {1, 3, 1, 3, 0}},
|
|
{"╬", {3, 3, 3, 3, 0}},
|
|
|
|
{"╭", {0, 0, 1, 1, 1}},
|
|
{"╮", {1, 0, 0, 1, 1}},
|
|
{"╯", {1, 1, 0, 0, 1}},
|
|
{"╰", {0, 1, 1, 0, 1}},
|
|
|
|
{"╴", {1, 0, 0, 0, 0}},
|
|
{"╵", {0, 1, 0, 0, 0}},
|
|
{"╶", {0, 0, 1, 0, 0}},
|
|
{"╷", {0, 0, 0, 1, 0}},
|
|
|
|
{"╸", {2, 0, 0, 0, 0}},
|
|
{"╹", {0, 2, 0, 0, 0}},
|
|
{"╺", {0, 0, 2, 0, 0}},
|
|
{"╻", {0, 0, 0, 2, 0}},
|
|
|
|
{"╼", {1, 0, 2, 0, 0}},
|
|
{"╽", {0, 1, 0, 2, 0}},
|
|
{"╾", {2, 0, 1, 0, 0}},
|
|
{"╿", {0, 2, 0, 1, 0}},
|
|
};
|
|
// clang-format on
|
|
|
|
template <class A, class B>
|
|
const std::map<B, A> InvertMap(const std::map<A, B> input) {
|
|
std::map<B, A> output;
|
|
for (const auto& it : input)
|
|
output[it.second] = it.first;
|
|
return output;
|
|
}
|
|
|
|
const std::map<TileEncoding, std::string> tile_encoding_inverse =
|
|
InvertMap(tile_encoding);
|
|
|
|
void UpgradeLeftRight(std::string& left, std::string& right) {
|
|
const auto it_left = tile_encoding.find(left);
|
|
if (it_left == tile_encoding.end())
|
|
return;
|
|
const auto it_right = tile_encoding.find(right);
|
|
if (it_right == tile_encoding.end())
|
|
return;
|
|
|
|
if (it_left->second.right == 0 && it_right->second.left != 0) {
|
|
TileEncoding encoding_left = it_left->second;
|
|
encoding_left.right = it_right->second.left;
|
|
const auto it_left_upgrade = tile_encoding_inverse.find(encoding_left);
|
|
if (it_left_upgrade != tile_encoding_inverse.end())
|
|
left = it_left_upgrade->second;
|
|
}
|
|
|
|
if (it_right->second.left == 0 && it_left->second.right != 0) {
|
|
TileEncoding encoding_right = it_right->second;
|
|
encoding_right.left = it_left->second.right;
|
|
const auto it_right_upgrade = tile_encoding_inverse.find(encoding_right);
|
|
if (it_right_upgrade != tile_encoding_inverse.end())
|
|
right = it_right_upgrade->second;
|
|
}
|
|
}
|
|
|
|
void UpgradeTopDown(std::string& top, std::string& down) {
|
|
const auto it_top = tile_encoding.find(top);
|
|
if (it_top == tile_encoding.end())
|
|
return;
|
|
const auto it_down = tile_encoding.find(down);
|
|
if (it_down == tile_encoding.end())
|
|
return;
|
|
|
|
if (it_top->second.down == 0 && it_down->second.top != 0) {
|
|
TileEncoding encoding_top = it_top->second;
|
|
encoding_top.down = it_down->second.top;
|
|
const auto it_top_down = tile_encoding_inverse.find(encoding_top);
|
|
if (it_top_down != tile_encoding_inverse.end())
|
|
top = it_top_down->second;
|
|
}
|
|
|
|
if (it_down->second.top == 0 && it_top->second.down != 0) {
|
|
TileEncoding encoding_down = it_down->second;
|
|
encoding_down.top = it_top->second.down;
|
|
const auto it_down_top = tile_encoding_inverse.find(encoding_down);
|
|
if (it_down_top != tile_encoding_inverse.end())
|
|
down = it_down_top->second;
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
/// A fixed dimension.
|
|
/// @see Fit
|
|
/// @see Full
|
|
Dimensions Dimension::Fixed(int v) {
|
|
return {v, v};
|
|
}
|
|
|
|
/// Use the terminal dimensions.
|
|
/// @see Fixed
|
|
/// @see Fit
|
|
Dimensions Dimension::Full() {
|
|
return Terminal::Size();
|
|
}
|
|
|
|
// static
|
|
/// Create a screen with the given dimension along the x-axis and y-axis.
|
|
Screen Screen::Create(Dimensions width, Dimensions height) {
|
|
return Screen(width.dimx, height.dimy);
|
|
}
|
|
|
|
// static
|
|
/// Create a screen with the given dimension.
|
|
Screen Screen::Create(Dimensions dimension) {
|
|
return Screen(dimension.dimx, dimension.dimy);
|
|
}
|
|
|
|
Screen::Screen(int dimx, int dimy)
|
|
: stencil{0, dimx - 1, 0, dimy - 1},
|
|
dimx_(dimx),
|
|
dimy_(dimy),
|
|
pixels_(dimy, std::vector<Pixel>(dimx)) {
|
|
#if defined(_WIN32)
|
|
// The placement of this call is a bit weird, however we can assume that
|
|
// anybody who instantiates a Screen object eventually wants to output
|
|
// something to the console.
|
|
// As we require UTF8 for all input/output operations we will just switch to
|
|
// UTF8 encoding here
|
|
SetConsoleOutputCP(CP_UTF8);
|
|
SetConsoleCP(CP_UTF8);
|
|
WindowsEmulateVT100Terminal();
|
|
#endif
|
|
}
|
|
|
|
/// Produce a std::string that can be used to print the Screen on the terminal.
|
|
/// Don't forget to flush stdout. Alternatively, you can use Screen::Print();
|
|
std::string Screen::ToString() {
|
|
std::stringstream ss;
|
|
|
|
Pixel previous_pixel;
|
|
Pixel final_pixel;
|
|
|
|
for (int y = 0; y < dimy_; ++y) {
|
|
if (y != 0) {
|
|
UpdatePixelStyle(ss, previous_pixel, final_pixel);
|
|
ss << "\r\n";
|
|
}
|
|
bool previous_fullwidth = false;
|
|
for (const auto& pixel : pixels_[y]) {
|
|
if (!previous_fullwidth) {
|
|
UpdatePixelStyle(ss, previous_pixel, pixel);
|
|
ss << pixel.character;
|
|
}
|
|
previous_fullwidth = (string_width(pixel.character) == 2);
|
|
}
|
|
}
|
|
|
|
UpdatePixelStyle(ss, previous_pixel, final_pixel);
|
|
|
|
return ss.str();
|
|
}
|
|
|
|
void Screen::Print() {
|
|
std::cout << ToString() << '\0' << std::flush;
|
|
}
|
|
|
|
/// @brief Access a character a given position.
|
|
/// @param x The character position along the x-axis.
|
|
/// @param y The character position along the y-axis.
|
|
std::string& Screen::at(int x, int y) {
|
|
return PixelAt(x, y).character;
|
|
}
|
|
|
|
/// @brief Access a Pixel at a given position.
|
|
/// @param x The pixel position along the x-axis.
|
|
/// @param y The pixel position along the y-axis.
|
|
Pixel& Screen::PixelAt(int x, int y) {
|
|
return stencil.Contain(x, y) ? pixels_[y][x] : dev_null_pixel;
|
|
}
|
|
|
|
/// @brief Return a string to be printed in order to reset the cursor position
|
|
/// to the beginning of the screen.
|
|
///
|
|
/// ```cpp
|
|
/// std::string reset_position;
|
|
/// while(true) {
|
|
/// auto document = render();
|
|
/// auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
|
|
/// Render(screen, document);
|
|
/// std::cout << reset_position << screen.ToString() << std::flush;
|
|
/// reset_position = screen.ResetPosition();
|
|
///
|
|
/// using namespace std::chrono_literals;
|
|
/// std::this_thread::sleep_for(0.01s);
|
|
/// }
|
|
/// ```
|
|
///
|
|
/// @return The string to print in order to reset the cursor position to the
|
|
/// beginning.
|
|
std::string Screen::ResetPosition(bool clear) {
|
|
std::stringstream ss;
|
|
if (clear) {
|
|
ss << MOVE_LEFT << CLEAR_LINE;
|
|
for (int y = 1; y < dimy_; ++y) {
|
|
ss << MOVE_UP << CLEAR_LINE;
|
|
}
|
|
} else {
|
|
ss << MOVE_LEFT;
|
|
for (int y = 1; y < dimy_; ++y) {
|
|
ss << MOVE_UP;
|
|
}
|
|
}
|
|
return ss.str();
|
|
}
|
|
|
|
/// @brief Clear all the pixel from the screen.
|
|
void Screen::Clear() {
|
|
pixels_ = std::vector<std::vector<Pixel>>(dimy_,
|
|
std::vector<Pixel>(dimx_, Pixel()));
|
|
cursor_.x = dimx_ - 1;
|
|
cursor_.y = dimy_ - 1;
|
|
}
|
|
|
|
// clang-format off
|
|
void Screen::ApplyShader() {
|
|
// Merge box characters togethers.
|
|
for (int y = 1; y < dimy_; ++y) {
|
|
for (int x = 1; x < dimx_; ++x) {
|
|
// Box drawing character uses exactly 3 byte.
|
|
std::string& cur = pixels_[y][x].character;
|
|
if (cur.size() != 3u)
|
|
continue;
|
|
|
|
// Left vs current.
|
|
std::string& left = pixels_[y][x-1].character;
|
|
if (left.size() == 3u)
|
|
UpgradeLeftRight(left, cur);
|
|
|
|
// Top vs current.
|
|
std::string& top = pixels_[y-1][x].character;
|
|
if (top.size() == 3u)
|
|
UpgradeTopDown(top, cur);
|
|
}
|
|
}
|
|
}
|
|
|
|
// clang-format on
|
|
|
|
} // namespace ftxui
|
|
|
|
// Copyright 2020 Arthur Sonzogni. All rights reserved.
|
|
// Use of this source code is governed by the MIT license that can be found in
|
|
// the LICENSE file.
|