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toaruos/apps/terminal.c
K. Lange e7a681f413 tty: Set control sessions on pty managers
2024-01-19 20:40:53 +09:00

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/**
* @brief Virtual terminal emulator.
*
* Provides a graphical character cell terminal with support for
* antialiased text, basic Unicode, bitmap fallbacks, nearly
* complete ANSI escape sequence support, 256- and 24-bit color,
* scrollback, selection, alternate screens, and various scroll
* methods.
*
* @copyright
* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2013-2022 K. Lange
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <getopt.h>
#include <errno.h>
#include <pty.h>
#include <wchar.h>
#include <dlfcn.h>
#include <pthread.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/fswait.h>
#define TRACE_APP_NAME "terminal"
#include <toaru/trace.h>
#include <toaru/decodeutf8.h>
#include <toaru/yutani.h>
#include <toaru/decorations.h>
#include <toaru/graphics.h>
#include <toaru/kbd.h>
#include <toaru/termemu.h>
#include <toaru/spinlock.h>
#include <toaru/list.h>
#include <toaru/menu.h>
#include <toaru/text.h>
/* 16- and 256-color palette */
#include "terminal-palette.h"
/* Bitmap font */
#include "terminal-font.h"
/* Show help text */
static void usage(char * argv[]) {
printf(
"Terminal Emulator\n"
"\n"
"usage: %s [-Fbxn] [-s SCALE] [-g WIDTHxHEIGHT] [COMMAND...]\n"
"\n"
" -F --fullscreen \033[3mRun in fullscreen (background) mode.\033[0m\n"
" -b --bitmap \033[3mUse the integrated bitmap font.\033[0m\n"
" -s --scale \033[3mScale the font in antialiased mode by a given amount.\033[0m\n"
" -h --help \033[3mShow this help message.\033[0m\n"
" -x --grid \033[3mMake resizes round to nearest match for character cell size.\033[0m\n"
" -n --no-frame \033[3mDisable decorations.\033[0m\n"
" -g --geometry \033[3mSet requested terminal size WIDTHxHEIGHT\033[0m\n"
" -B --blurred \033[3mBlur background behind terminal.\033[0m\n"
" -S --scrollback \033[3mSet the scrollback buffer size, 0 for unlimited.\033[0m\n"
"\n"
" This terminal emulator provides basic support for VT220 escapes and\n"
" XTerm extensions, including 256 color support and font effects.\n",
argv[0]);
}
/* master and slave pty descriptors */
static int fd_master, fd_slave;
static FILE * terminal;
static pid_t child_pid = 0;
static int scale_fonts = 0; /* Whether fonts should be scaled */
static float font_scaling = 1.0; /* How much they should be scaled by */
static uint16_t term_width = 0; /* Width of the terminal (in cells) */
static uint16_t term_height = 0; /* Height of the terminal (in cells) */
static uint16_t font_size = 16; /* Font size according to tt library */
static uint16_t char_width = 8; /* Width of a cell in pixels */
static uint16_t char_height = 17; /* Height of a cell in pixels */
static uint16_t char_offset = 0; /* Offset of the font within the cell */
static int csr_x = 0; /* Cursor X */
static int csr_y = 0; /* Cursor Y */
static int csr_h = 0; /* Cursor last column hold flag */
static uint32_t current_fg = 7; /* Current foreground color */
static uint32_t current_bg = 0; /* Current background color */
static term_cell_t * term_buffer = NULL; /* The active terminal cell buffer */
static term_cell_t * term_buffer_a = NULL; /* The main buffer */
static term_cell_t * term_buffer_b = NULL; /* The secondary buffer */
static term_cell_t * term_mirror = NULL; /* What we want to draw */
static term_cell_t * term_display = NULL; /* What we think we've drawn already */
static term_state_t * ansi_state = NULL; /* ANSI parser library state */
static int active_buffer = 0;
static int _orig_x = 0;
static int _orig_y = 0;
static uint32_t _orig_fg = 7;
static uint32_t _orig_bg = 0;
static bool cursor_on = 1; /* Whether or not the cursor should be rendered */
static bool _fullscreen = 0; /* Whether or not we are running in fullscreen mode (GUI only) */
static bool _no_frame = 0; /* Whether to disable decorations or not */
static bool _use_aa = 1; /* Whether or not to use best-available anti-aliased renderer */
static bool _free_size = 1; /* Disable rounding when resized */
static struct TT_Font * _tt_font_normal = NULL;
static struct TT_Font * _tt_font_bold = NULL;
static struct TT_Font * _tt_font_oblique = NULL;
static struct TT_Font * _tt_font_bold_oblique = NULL;
static struct TT_Font * _tt_font_fallback = NULL;
static struct TT_Font * _tt_font_japanese = NULL;
static list_t * images_list = NULL;
static int menu_bar_height = 24;
/* Text selection information */
static int selection = 0;
static int selection_start_x = 0;
static int selection_start_y = 0;
static int selection_end_x = 0;
static int selection_end_y = 0;
static char * selection_text = NULL;
static int _selection_count = 0;
static int _selection_i = 0;
/* Mouse state */
static int last_mouse_x = -1;
static int last_mouse_y = -1;
static int button_state = 0;
static unsigned long long mouse_ticks = 0;
static yutani_window_t * window = NULL; /* GUI window */
static yutani_t * yctx = NULL;
/* Window flip bounds */
static int32_t l_x = INT32_MAX;
static int32_t l_y = INT32_MAX;
static int32_t r_x = -1;
static int32_t r_y = -1;
static uint32_t window_width = 640;
static uint32_t window_height = 480;
static bool window_position_set = 0;
static int32_t window_left = 0;
static int32_t window_top = 0;
#define TERMINAL_TITLE_SIZE 512
static char terminal_title[TERMINAL_TITLE_SIZE];
static size_t terminal_title_length = 0;
static gfx_context_t * ctx;
static struct MenuList * menu_right_click = NULL;
static void render_decors(void);
static void term_clear(int i);
static void reinit(void);
static void term_redraw_cursor();
static int decor_left_width = 0;
static int decor_top_height = 0;
static int decor_right_width = 0;
static int decor_bottom_height = 0;
static int decor_width = 0;
static int decor_height = 0;
struct scrollback_row {
unsigned short width;
term_cell_t cells[];
};
static size_t max_scrollback = 10000;
static list_t * scrollback_list = NULL;
static int scrollback_offset = 0;
/* Menu bar entries */
struct menu_bar terminal_menu_bar = {0};
struct menu_bar_entries terminal_menu_entries[] = {
{"File", "file"},
{"Edit", "edit"},
{"View", "view"},
{"Help", "help"},
{NULL, NULL},
};
/* Trigger to exit the terminal when the child process dies or
* we otherwise receive an exit signal */
static volatile int exit_application = 0;
static void cell_redraw(uint16_t x, uint16_t y);
static void cell_redraw_inverted(uint16_t x, uint16_t y);
static void cell_redraw_offset(uint16_t x, uint16_t y);
static void cell_redraw_offset_inverted(uint16_t x, uint16_t y);
static void update_bounds(void);
static uint64_t get_ticks(void) {
struct timeval now;
gettimeofday(&now, NULL);
return (uint64_t)now.tv_sec * 1000000LL + (uint64_t)now.tv_usec;
}
static void display_flip(void) {
if (l_x != INT32_MAX && l_y != INT32_MAX) {
flip(ctx);
yutani_flip_region(yctx, window, l_x, l_y, r_x - l_x, r_y - l_y);
l_x = INT32_MAX;
l_y = INT32_MAX;
r_x = -1;
r_y = -1;
}
}
/* Returns the lower of two shorts */
static int32_t min(int32_t a, int32_t b) {
return (a < b) ? a : b;
}
/* Returns the higher of two shorts */
static int32_t max(int32_t a, int32_t b) {
return (a > b) ? a : b;
}
/*
* Convert codepoint to UTF-8
*
* Returns length of byte sequence written.
*/
static int to_eight(uint32_t codepoint, char * out) {
memset(out, 0x00, 7);
if (codepoint < 0x0080) {
out[0] = (char)codepoint;
} else if (codepoint < 0x0800) {
out[0] = 0xC0 | (codepoint >> 6);
out[1] = 0x80 | (codepoint & 0x3F);
} else if (codepoint < 0x10000) {
out[0] = 0xE0 | (codepoint >> 12);
out[1] = 0x80 | ((codepoint >> 6) & 0x3F);
out[2] = 0x80 | (codepoint & 0x3F);
} else if (codepoint < 0x200000) {
out[0] = 0xF0 | (codepoint >> 18);
out[1] = 0x80 | ((codepoint >> 12) & 0x3F);
out[2] = 0x80 | ((codepoint >> 6) & 0x3F);
out[3] = 0x80 | ((codepoint) & 0x3F);
} else if (codepoint < 0x4000000) {
out[0] = 0xF8 | (codepoint >> 24);
out[1] = 0x80 | (codepoint >> 18);
out[2] = 0x80 | ((codepoint >> 12) & 0x3F);
out[3] = 0x80 | ((codepoint >> 6) & 0x3F);
out[4] = 0x80 | ((codepoint) & 0x3F);
} else {
out[0] = 0xF8 | (codepoint >> 30);
out[1] = 0x80 | ((codepoint >> 24) & 0x3F);
out[2] = 0x80 | ((codepoint >> 18) & 0x3F);
out[3] = 0x80 | ((codepoint >> 12) & 0x3F);
out[4] = 0x80 | ((codepoint >> 6) & 0x3F);
out[5] = 0x80 | ((codepoint) & 0x3F);
}
return strlen(out);
}
/* Set the terminal title string */
static void set_title(char * c) {
int len = min(TERMINAL_TITLE_SIZE, strlen(c)+1);
memcpy(terminal_title, c, len);
terminal_title[len-1] = '\0';
terminal_title_length = len - 1;
render_decors();
}
/* Call a function for each selected cell */
static void iterate_selection(void (*func)(uint16_t x, uint16_t y)) {
if (!selection) return;
if (selection_end_y < selection_start_y) {
for (int x = selection_end_x; x < term_width; ++x) {
func(x, selection_end_y);
}
for (int y = selection_end_y + 1; y < selection_start_y; ++y) {
for (int x = 0; x < term_width; ++x) {
func(x, y);
}
}
for (int x = 0; x <= selection_start_x; ++x) {
func(x, selection_start_y);
}
} else if (selection_start_y == selection_end_y) {
if (selection_start_x > selection_end_x) {
for (int x = selection_end_x; x <= selection_start_x; ++x) {
func(x, selection_start_y);
}
} else {
for (int x = selection_start_x; x <= selection_end_x; ++x) {
func(x, selection_start_y);
}
}
} else {
for (int x = selection_start_x; x < term_width; ++x) {
func(x, selection_start_y);
}
for (int y = selection_start_y + 1; y < selection_end_y; ++y) {
for (int x = 0; x < term_width; ++x) {
func(x, y);
}
}
for (int x = 0; x <= selection_end_x; ++x) {
func(x, selection_end_y);
}
}
}
/* Redraw the selection with the selection hint (inversion) */
static void redraw_selection(void) {
iterate_selection(cell_redraw_offset_inverted);
}
static term_cell_t * cell_at(uint16_t x, uint16_t _y) {
int y = _y;
y -= scrollback_offset;
if (y >= 0) {
return &term_buffer[y * term_width + x];
} else {
node_t * node = scrollback_list->tail;
for (; y < -1; y++) {
if (!node) break;
node = node->prev;
}
if (node) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
if (row && x < row->width) {
return &row->cells[x];
}
}
}
return NULL;
}
static void mark_cell(uint16_t x, uint16_t y) {
term_cell_t * c = cell_at(x,y);
if (c) {
c->flags |= 0x200;
}
}
static void mark_selection(void) {
iterate_selection(mark_cell);
}
static void red_cell(uint16_t x, uint16_t y) {
term_cell_t * c = cell_at(x,y);
if (c) {
if (c->flags & 0x200) {
c->flags &= ~(0x200);
} else {
c->flags |= 0x400;
}
}
}
static void flip_selection(void) {
iterate_selection(red_cell);
for (int y = 0; y < term_height; ++y) {
for (int x = 0; x < term_width; ++x) {
term_cell_t * c = cell_at(x,y);
if (c) {
if (c->flags & 0x200) cell_redraw_offset(x,y);
if (c->flags & 0x400) cell_redraw_offset_inverted(x,y);
c->flags &= ~(0x600);
}
}
}
}
/* Figure out how long the UTF-8 selection string should be. */
static void count_selection(uint16_t x, uint16_t _y) {
int y = _y;
y -= scrollback_offset;
if (y >= 0) {
term_cell_t * cell = &term_buffer[y * term_width + x];
if (!(cell->flags & ANSI_EXT_IMG)) {
if (((uint32_t *)cell)[0] != 0x00000000) {
char tmp[7];
_selection_count += to_eight(cell->c, tmp);
}
}
} else {
node_t * node = scrollback_list->tail;
for (; y < -1; y++) {
if (!node) break;
node = node->prev;
}
if (node) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
if (row && x < row->width) {
term_cell_t * cell = &row->cells[x];
if (cell && ((uint32_t *)cell)[0] != 0x00000000) {
char tmp[7];
_selection_count += to_eight(cell->c, tmp);
}
}
}
}
if (x == term_width - 1) {
_selection_count++;
}
}
/* Fill the selection text buffer with the selected text. */
void write_selection(uint16_t x, uint16_t _y) {
int y = _y;
y -= scrollback_offset;
if (y >= 0) {
term_cell_t * cell = &term_buffer[y * term_width + x];
if (!(cell->flags & ANSI_EXT_IMG)) {
if (((uint32_t *)cell)[0] != 0x00000000 && cell->c != 0xFFFF) {
char tmp[7];
int count = to_eight(cell->c, tmp);
for (int i = 0; i < count; ++i) {
selection_text[_selection_i] = tmp[i];
_selection_i++;
}
}
}
} else {
node_t * node = scrollback_list->tail;
for (; y < -1; y++) {
if (!node) break;
node = node->prev;
}
if (node) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
if (row && x < row->width) {
term_cell_t * cell = &row->cells[x];
if (cell && ((uint32_t *)cell)[0] != 0x00000000 && cell->c != 0xFFFF) {
char tmp[7];
int count = to_eight(cell->c, tmp);
for (int i = 0; i < count; ++i) {
selection_text[_selection_i] = tmp[i];
_selection_i++;
}
}
}
}
}
if (x == term_width - 1) {
selection_text[_selection_i] = '\n';;
_selection_i++;
}
}
/* Copy the selection text to the clipboard. */
static char * copy_selection(void) {
_selection_count = 0;
iterate_selection(count_selection);
if (selection_text) {
free(selection_text);
}
if (_selection_count == 0) {
return NULL;
}
selection_text = malloc(_selection_count + 1);
selection_text[_selection_count] = '\0';
_selection_i = 0;
iterate_selection(write_selection);
if (selection_text[_selection_count-1] == '\n') {
/* Don't end on a line feed */
selection_text[_selection_count-1] = '\0';
}
yutani_set_clipboard(yctx, selection_text);
return selection_text;
}
static volatile int input_buffer_lock = 0;
static int input_buffer_semaphore[2];
static list_t * input_buffer_queue = NULL;
struct input_data {
size_t len;
char data[];
};
void * handle_input_writing(void * unused) {
(void)unused;
while (1) {
/* Read one byte from semaphore; as long as semaphore has data,
* there is another input blob to write to the TTY */
char tmp[1];
int c = read(input_buffer_semaphore[0],tmp,1);
if (c > 0) {
/* Retrieve blob */
spin_lock(&input_buffer_lock);
node_t * blob = list_dequeue(input_buffer_queue);
spin_unlock(&input_buffer_lock);
/* No blobs? This shouldn't happen, but just in case, just continue */
if (!blob) {
continue;
}
/* Write blob data to the tty */
struct input_data * value = blob->value;
write(fd_master, value->data, value->len);
free(blob->value);
free(blob);
} else {
/* The pipe has closed, terminal is exiting */
break;
}
}
return NULL;
}
static void write_input_buffer(char * data, size_t len) {
struct input_data * d = malloc(sizeof(struct input_data) + len);
d->len = len;
memcpy(&d->data, data, len);
spin_lock(&input_buffer_lock);
list_insert(input_buffer_queue, d);
spin_unlock(&input_buffer_lock);
write(input_buffer_semaphore[1], d, 1);
}
/* Stuffs a string into the stdin of the terminal's child process
* Useful for things like the ANSI DSR command. */
static void input_buffer_stuff(char * str) {
size_t len = strlen(str);
write_input_buffer(str, len);
}
/* Redraw the decorations */
static void render_decors(void) {
/* Don't draw decorations or bother advertising the window if in "fullscreen mode" */
if (_fullscreen) return;
if (!_no_frame) {
/* Draw the decorations */
render_decorations(window, ctx, terminal_title_length ? terminal_title : "Terminal");
/* Update menu bar position and size */
terminal_menu_bar.x = decor_left_width;
terminal_menu_bar.y = decor_top_height;
terminal_menu_bar.width = window_width;
terminal_menu_bar.window = window;
/* Redraw the menu bar */
menu_bar_render(&terminal_menu_bar, ctx);
}
/* Advertise the window icon to the panel. */
yutani_window_advertise_icon(yctx, window, terminal_title_length ? terminal_title : "Terminal", "utilities-terminal");
/*
* Flip the whole window
* We do this regardless of whether we drew decorations to catch
* a case where decorations are toggled.
*/
l_x = 0; l_y = 0;
r_x = window->width;
r_y = window->height;
display_flip();
}
/* Set a pixel in the terminal cell area */
static inline void term_set_point(uint16_t x, uint16_t y, uint32_t color ) {
GFX(ctx, (x+decor_left_width),(y+decor_top_height+menu_bar_height)) = color;
}
static void _fill_region(uint32_t _bg, uint16_t x, uint16_t y, uint16_t width, uint16_t height) {
for (uint8_t i = 0; i < height; ++i) {
for (uint8_t j = 0; j < width; ++j) {
term_set_point(x+j,y+i,_bg);
}
}
}
/* Draw a partial block character. */
static void draw_semi_block(int c, int x, int y, uint32_t fg, uint32_t bg) {
bg = premultiply(bg);
fg = alpha_blend_rgba(bg, premultiply(fg));
_fill_region(bg, x, y, char_width, char_height);
if (c == 0x2580) {
for (uint8_t i = 0; i < char_height / 2; ++i) {
for (uint8_t j = 0; j < char_width; ++j) {
term_set_point(x+j,y+i,fg);
}
}
} else if (c >= 0x2589) {
c -= 0x2588;
int width = char_width - ((c * char_width) / 8);
for (uint8_t i = 0; i < char_height; ++i) {
for (uint8_t j = 0; j < width; ++j) {
term_set_point(x+j, y+i, fg);
}
}
} else {
c -= 0x2580;
int height = char_height - ((c * char_height) / 8);
for (uint8_t i = height; i < char_height; ++i) {
for (uint8_t j = 0; j < char_width; ++j) {
term_set_point(x+j, y+i,fg);
}
}
}
}
static void draw_box_drawing(int c, int x, int y, uint32_t fg, uint32_t bg) {
bg = premultiply(bg);
fg = alpha_blend_rgba(bg, premultiply(fg));
_fill_region(bg, x, y, char_width, char_height);
int lineheight = char_height / 16;
int linewidth = char_width / 8;
lineheight = lineheight < 1 ? 1 : lineheight;
linewidth = linewidth < 1 ? 1 : linewidth;
int mid_x = char_width / 2 - linewidth / 2;
int mid_y = char_height / 2 - lineheight / 2;
int extra_x = (mid_x * 2 < char_width) ? char_width - mid_x * 2 : 0;
int extra_y = (mid_y * 2 < char_height) ? char_height - mid_y * 2 : 0;
#define UP _fill_region(fg, x + mid_x, y, linewidth, mid_y + lineheight)
#define DOWN _fill_region(fg, x + mid_x, y + mid_y, linewidth, mid_y + extra_y)
#define LEFT _fill_region(fg, x, y + mid_y, mid_x + linewidth, lineheight)
#define RIGHT _fill_region(fg, x + mid_x, y + mid_y, mid_x + extra_x, lineheight)
#define VERT _fill_region(fg, x + mid_x, y, linewidth, char_height)
#define HORI _fill_region(fg, x, y + mid_y, char_width, lineheight)
switch (c) {
case 0x2500: HORI; break;
case 0x2502: VERT; break;
case 0x250c: RIGHT; DOWN; break;
case 0x2510: LEFT; DOWN; break;
case 0x2514: UP; RIGHT; break;
case 0x2518: UP; LEFT; break;
case 0x251c: VERT; RIGHT; break;
case 0x2524: VERT; LEFT; break;
case 0x252c: HORI; DOWN; break;
case 0x2534: UP; HORI; break;
case 0x253c: HORI; VERT; break;
case 0x2574: LEFT; break;
case 0x2575: UP; break;
case 0x2576: RIGHT; break;
case 0x2577: DOWN; break;
}
}
#include "apps/ununicode.h"
struct GlyphCacheEntry {
struct TT_Font * font;
sprite_t * sprite;
uint32_t size;
uint32_t glyph;
uint32_t color;
};
static struct GlyphCacheEntry glyph_cache[1024];
static unsigned long _hits = 0;
static unsigned long _misses = 0;
static unsigned long _wrongcolor = 0;
static void _menu_action_cache_stats(struct MenuEntry * self) {
char msg[400];
unsigned long count = 0;
unsigned long size = 0;
for (int i = 0; i < 1024; ++i) {
if (glyph_cache[i].sprite) {
count++;
size += glyph_cache[i].sprite->width * glyph_cache[i].sprite->height * 4;
}
}
snprintf(msg, 400,
"Hits: %lu\n"
"Misses: %lu\n"
"Wrong color: %lu\n"
"Populated cache entries: %lu\n"
"Size of sprites: %lu\n",
_hits, _misses, _wrongcolor, count, size);
write(fd_slave, msg, strlen(msg));
}
static void _menu_action_clear_cache(struct MenuEntry * self) {
for (int i = 0; i < 1024; ++i) {
if (glyph_cache[i].sprite) {
sprite_free(glyph_cache[i].sprite);
}
}
memset(glyph_cache,0,sizeof(glyph_cache));
}
static void draw_cached_glyph(gfx_context_t * ctx, struct TT_Font * _font, uint32_t size, int x, int y, uint32_t glyph, uint32_t fg, int flags) {
unsigned int hash = (((uintptr_t)_font >> 8) ^ (glyph * size)) & 1023;
struct GlyphCacheEntry * entry = &glyph_cache[hash];
if (entry->font != _font || entry->size != size || entry->glyph != glyph) {
if (entry->sprite) sprite_free(entry->sprite);
int wide = (flags & ANSI_WIDE) ? 2 : 1;
tt_set_size(_font, size);
entry->font = _font;
entry->size = size;
entry->glyph = glyph;
entry->sprite = create_sprite(char_width * wide, char_height, ALPHA_EMBEDDED);
entry->color = _ALP(fg) == 255 ? fg : 0xFFFFFFFF;
gfx_context_t * _ctx = init_graphics_sprite(entry->sprite);
draw_fill(_ctx, 0);
tt_draw_glyph(_ctx, entry->font, 0, char_offset, glyph, entry->color);
free(_ctx);
_misses++;
} else {
_hits++;
}
if (entry->color != fg) {
_wrongcolor++;
draw_sprite_alpha_paint(ctx, entry->sprite, x, y, 1.0, fg);
} else {
draw_sprite(ctx, entry->sprite, x, y);
}
}
/* Write a character to the window. */
static void term_write_char(uint32_t val, uint16_t x, uint16_t y, uint32_t fg, uint32_t bg, uint8_t flags) {
uint32_t _fg, _bg;
/* Select foreground color from palette. */
if (fg < PALETTE_COLORS) {
_fg = term_colors[fg];
_fg |= 0xFF << 24;
} else {
_fg = fg;
}
/* Select background color from aplette. */
if (bg < PALETTE_COLORS) {
_bg = term_colors[bg];
if (flags & ANSI_SPECBG) {
_bg |= 0xFF << 24;
} else {
_bg |= TERM_DEFAULT_OPAC << 24;
}
} else {
_bg = bg;
}
if (_fullscreen) {
_bg |= 0xFF << 24;
}
switch (val) {
/* Line drawing */
case 0x2500:
case 0x2502:
case 0x250c:
case 0x2510:
case 0x2514:
case 0x2518:
case 0x251c:
case 0x2524:
case 0x252c:
case 0x2534:
case 0x253c:
case 0x2574:
case 0x2575:
case 0x2576:
case 0x2577:
draw_box_drawing(val, x, y, _fg, _bg);
goto _extra_stuff;
/* Semi-filled blocks */
case 0x2580 ... 0x258f: {
draw_semi_block(val, x, y, _fg, _bg);
goto _extra_stuff;
}
/* Instead of checker, does 50% opacity fill */
case 0x2591:
case 0x2592:
case 0x2593:
_fill_region(alpha_blend_rgba(premultiply(_bg), interp_colors(rgb(0,0,0), premultiply(_fg), 255 * (val - 0x2590) / 4)), x, y, char_width, char_height);
goto _extra_stuff;
default:
break;
}
/* Draw glyphs */
if (_use_aa) {
if (val == 0xFFFF) return;
for (uint8_t i = 0; i < char_height; ++i) {
for (uint8_t j = 0; j < char_width; ++j) {
term_set_point(x+j,y+i,_bg);
}
}
if (flags & ANSI_WIDE) {
for (uint8_t i = 0; i < char_height; ++i) {
for (uint8_t j = char_width; j < 2 * char_width; ++j) {
term_set_point(x+j,y+i,_bg);
}
}
}
if (val < 32 || val == ' ') {
goto _extra_stuff;
}
struct TT_Font * _font = _tt_font_normal;
if (flags & ANSI_BOLD && flags & ANSI_ITALIC) {
_font = _tt_font_bold_oblique;
} else if (flags & ANSI_BOLD) {
_font = _tt_font_bold;
} else if (flags & ANSI_ITALIC) {
_font = _tt_font_oblique;
}
unsigned int glyph = tt_glyph_for_codepoint(_font, val);
/* Try the regular sans serif font as a fallback */
if (!glyph) {
int nglyph = tt_glyph_for_codepoint(_tt_font_fallback, val);
if (nglyph) {
_font = _tt_font_fallback;
glyph = nglyph;
}
}
/* Try the VL Gothic, if it's installed and this is a reasonably high codepoint */
if (!glyph && _tt_font_japanese && val >= 0x2E80) {
int nglyph = tt_glyph_for_codepoint(_tt_font_japanese, val);
if (nglyph) {
_font = _tt_font_japanese;
glyph = nglyph;
}
}
int _x = x + decor_left_width;
int _y = y + decor_top_height + menu_bar_height;
draw_cached_glyph(ctx, _font, font_size, _x,_y, glyph, _fg, flags);
} else {
/* Convert other unicode characters. */
if (val > 128) {
val = ununicode(val);
}
/* Draw using the bitmap font. */
uint8_t * c = large_font[val];
for (uint8_t i = 0; i < char_height; ++i) {
for (uint8_t j = 0; j < char_width; ++j) {
if (c[i] & (1 << (LARGE_FONT_MASK-j))) {
term_set_point(x+j,y+i,_fg);
} else {
term_set_point(x+j,y+i,_bg);
}
}
}
}
/* Draw additional text elements, like underlines and cross-outs. */
_extra_stuff:
if (flags & ANSI_UNDERLINE) {
for (uint8_t i = 0; i < char_width; ++i) {
term_set_point(x + i, y + char_height - 1, _fg);
}
}
if (flags & ANSI_CROSS) {
for (uint8_t i = 0; i < char_width; ++i) {
term_set_point(x + i, y + char_height - 7, _fg);
}
}
if (flags & ANSI_BORDER) {
for (uint8_t i = 0; i < char_height; ++i) {
term_set_point(x , y + i, _fg);
term_set_point(x + (char_width - 1), y + i, _fg);
}
for (uint8_t j = 0; j < char_width; ++j) {
term_set_point(x + j, y, _fg);
term_set_point(x + j, y + (char_height - 1), _fg);
}
}
/* Calculate the bounds of the updated region of the window */
l_x = min(l_x, decor_left_width + x);
l_y = min(l_y, decor_top_height+menu_bar_height + y);
if (flags & ANSI_WIDE) {
r_x = max(r_x, decor_left_width + x + char_width * 2);
r_y = max(r_y, decor_top_height+menu_bar_height + y + char_height * 2);
} else {
r_x = max(r_x, decor_left_width + x + char_width);
r_y = max(r_y, decor_top_height+menu_bar_height + y + char_height);
}
}
static void term_mirror_set(uint16_t x, uint16_t y, uint32_t val, uint32_t fg, uint32_t bg, uint8_t flags) {
if (x >= term_width || y >= term_height) return;
term_cell_t * cell = &term_mirror[y * term_width + x];
cell->c = val;
cell->fg = fg;
cell->bg = bg;
cell->flags = flags;
}
static void term_mirror_copy(uint16_t x, uint16_t y, term_cell_t * from) {
if (x >= term_width || y >= term_height) return;
term_cell_t * cell = &term_mirror[y * term_width + x];
if (!from->c && !from->fg && !from->bg) {
cell->c = ' ';
cell->fg = TERM_DEFAULT_FG;
cell->bg = TERM_DEFAULT_BG;
cell->flags = from->flags;
} else {
*cell = *from;
}
}
static void term_mirror_copy_inverted(uint16_t x, uint16_t y, term_cell_t * from) {
if (x >= term_width || y >= term_height) return;
term_cell_t * cell = &term_mirror[y * term_width + x];
if (!from->c && !from->fg && !from->bg) {
cell->c = ' ';
cell->fg = TERM_DEFAULT_BG;
cell->bg = TERM_DEFAULT_FG;
cell->flags = from->flags;
} else if (from->flags & ANSI_EXT_IMG) {
cell->c = ' ';
cell->fg = from->fg;
cell->bg = from->bg;
cell->flags = from->flags | ANSI_SPECBG;
} else {
cell->c = from->c;
cell->fg = from->bg;
cell->bg = from->fg;
cell->flags = from->flags | ANSI_SPECBG;
}
}
/* Set a terminal cell */
static void cell_set(uint16_t x, uint16_t y, uint32_t c, uint32_t fg, uint32_t bg, uint32_t flags) {
/* Avoid setting cells out of range. */
if (x >= term_width || y >= term_height) return;
/* Calculate the cell position in the terminal buffer */
term_cell_t * cell = &term_buffer[y * term_width + x];
/* Set cell attributes */
cell->c = c;
cell->fg = fg;
cell->bg = bg;
cell->flags = flags;
}
/* Redraw an embedded image cell */
static void redraw_cell_image(uint16_t x, uint16_t y, term_cell_t * cell, int inverted) {
/* Avoid setting cells out of range. */
if (x >= term_width || y >= term_height) return;
/* Draw the image data */
uint32_t * data = (uint32_t *)((uintptr_t)cell->bg << 32 | cell->fg);
if (inverted) {
for (uint32_t yy = 0; yy < char_height; ++yy) {
for (uint32_t xx = 0; xx < char_width; ++xx) {
uint32_t alpha = 0xFF000000 & *data;
uint32_t color = 0xFFFFFF - (*data & 0xFFFFFF);
term_set_point(x * char_width + xx, y * char_height + yy, color | alpha);
data++;
}
}
} else {
for (uint32_t yy = 0; yy < char_height; ++yy) {
for (uint32_t xx = 0; xx < char_width; ++xx) {
term_set_point(x * char_width + xx, y * char_height + yy, *data);
data++;
}
}
}
/* Update bounds */
l_x = min(l_x, decor_left_width + x * char_width);
l_y = min(l_y, decor_top_height+menu_bar_height + y * char_height);
r_x = max(r_x, decor_left_width + x * char_width + char_width);
r_y = max(r_y, decor_top_height+menu_bar_height + y * char_height + char_height);
}
static void maybe_flip_display(int force) {
static uint64_t last_refresh;
uint64_t ticks = get_ticks();
if (!force) {
if (ticks < last_refresh + 33330L) {
return;
}
}
last_refresh = ticks;
for (unsigned int y = 0; y < term_height; ++y) {
for (unsigned int x = 0; x < term_width; ++x) {
term_cell_t * cell_m = &term_mirror[y * term_width + x];
term_cell_t * cell_d = &term_display[y * term_width + x];
if (memcmp(cell_m, cell_d, sizeof(term_cell_t))) {
*cell_d = *cell_m;
if (cell_m->flags & ANSI_EXT_IMG) {
redraw_cell_image(x,y,cell_m,cell_m->flags & ANSI_SPECBG);
} else {
term_write_char(cell_m->c, x * char_width, y * char_height, cell_m->fg, cell_m->bg, cell_m->flags);
}
}
}
}
display_flip();
}
static void cell_redraw_offset(uint16_t x, uint16_t _y) {
int y = _y;
int i = y;
y -= scrollback_offset;
if (y >= 0) {
term_mirror_copy(x,i,&term_buffer[y * term_width + x]);
} else {
node_t * node = scrollback_list->tail;
for (; y < -1; y++) {
if (!node) break;
node = node->prev;
}
if (node) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
if (row && x < row->width) {
term_mirror_copy(x,i,&row->cells[x]);
} else {
term_mirror_set(x,i,' ',TERM_DEFAULT_FG, TERM_DEFAULT_BG, TERM_DEFAULT_FLAGS);
}
}
}
}
static void cell_redraw_offset_inverted(uint16_t x, uint16_t _y) {
int y = _y;
int i = y;
y -= scrollback_offset;
if (y >= 0) {
term_mirror_copy_inverted(x,i,&term_buffer[y * term_width + x]);
} else {
node_t * node = scrollback_list->tail;
for (; y < -1; y++) {
if (!node) break;
node = node->prev;
}
if (node) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
if (row && x < row->width) {
term_mirror_copy_inverted(x,i,&row->cells[x]);
} else {
term_mirror_set(x, i, ' ', TERM_DEFAULT_BG, TERM_DEFAULT_FG, TERM_DEFAULT_FLAGS|ANSI_SPECBG);
}
}
}
}
/* Redraw a text cell normally. */
static void cell_redraw(uint16_t x, uint16_t y) {
if (x >= term_width || y >= term_height) return;
term_mirror_copy(x,y,&term_buffer[y * term_width + x]);
}
/* Redraw text cell inverted. */
static void cell_redraw_inverted(uint16_t x, uint16_t y) {
/* Avoid cells out of range. */
if (x >= term_width || y >= term_height) return;
term_mirror_copy_inverted(x,y,&term_buffer[y * term_width + x]);
}
/* Redraw text cell with a surrounding box (used by cursor) */
static void cell_redraw_box(uint16_t x, uint16_t y) {
if (x >= term_width || y >= term_height) return;
term_cell_t cell = term_buffer[y * term_width + x];
cell.flags |= ANSI_BORDER;
term_mirror_copy(x,y,&cell);
}
/* Draw the cursor cell */
static void render_cursor() {
if (!cursor_on) return;
if (!window->focused) {
/* An unfocused terminal should draw an unfilled box. */
cell_redraw_box(csr_x, csr_y);
} else {
/* A focused terminal draws a solid box. */
cell_redraw_inverted(csr_x, csr_y);
}
}
static uint8_t cursor_flipped = 0;
/* A soft request to draw the cursor. */
static void draw_cursor() {
if (!cursor_on) return;
cursor_flipped = 0;
render_cursor();
}
/* Timer callback to flip (flash) the cursor */
static void maybe_flip_cursor(void) {
uint64_t ticks = get_ticks();
if (ticks > mouse_ticks + 600000LL) {
mouse_ticks = ticks;
if (scrollback_offset != 0) {
return; /* Don't flip cursor while drawing scrollback */
}
if (window->focused && cursor_flipped) {
cell_redraw(csr_x, csr_y);
} else {
render_cursor();
}
cursor_flipped = 1 - cursor_flipped;
}
}
/* Draw all cells. Duplicates code from cell_redraw to avoid unecessary bounds checks. */
static void term_redraw_all() {
for (int i = 0; i < term_height; i++) {
for (int x = 0; x < term_width; ++x) {
term_mirror_copy(x,i,&term_buffer[i * term_width + x]);
}
}
}
static void _menu_action_redraw(struct MenuEntry * self) {
term_redraw_all();
}
/* Remove no-longer-visible image cell data. */
static void flush_unused_images(void) {
if (!images_list->length) return;
list_t * tmp = list_create();
/* Go through scrollback, too */
if (scrollback_list) {
foreach(node, scrollback_list) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
for (unsigned int x = 0; x < row->width; ++x) {
term_cell_t * cell = &row->cells[x];
if (cell->flags & ANSI_EXT_IMG) {
uint32_t * data = (uint32_t *)((uintptr_t)cell->bg << 32 | cell->fg);
list_insert(tmp, data);
}
}
}
}
for (int y = 0; y < term_height; ++y) {
for (int x = 0; x < term_width; ++x) {
term_cell_t * cell = &term_buffer_a[y * term_width + x];
if (cell->flags & ANSI_EXT_IMG) {
uint32_t * data = (uint32_t *)((uintptr_t)cell->bg << 32 | cell->fg);
list_insert(tmp, data);
}
}
}
for (int y = 0; y < term_height; ++y) {
for (int x = 0; x < term_width; ++x) {
term_cell_t * cell = &term_buffer_b[y * term_width + x];
if (cell->flags & ANSI_EXT_IMG) {
uint32_t * data = (uint32_t *)((uintptr_t)cell->bg << 32 | cell->fg);
list_insert(tmp, data);
}
}
}
foreach(node, images_list) {
if (!list_find(tmp, node->value)) {
free(node->value);
}
}
list_free(images_list);
images_list = tmp;
}
static void term_shift_region(int top, int height, int how_much) {
if (how_much == 0) return;
int destination, source;
int count, new_top, new_bottom;
if (how_much > height) {
count = 0;
new_top = top;
new_bottom = top + height;
} else if (how_much > 0) {
destination = term_width * top;
source = term_width * (top + how_much);
count = height - how_much;
new_top = top + height - how_much;
new_bottom = top + height;
} else if (how_much < 0) {
destination = term_width * (top - how_much);
source = term_width * top;
count = height + how_much;
new_top = top;
new_bottom = top - how_much;
}
/* Move from top+how_much to top */
if (count) {
memmove(term_buffer + destination, term_buffer + source, count * term_width * sizeof(term_cell_t));
memmove(term_mirror + destination, term_mirror + source, count * term_width * sizeof(term_cell_t));
}
l_x = 0; l_y = 0;
r_x = window->width;
r_y = window->height;
/* Clear new lines at bottom */
for (int i = new_top; i < new_bottom; ++i) {
for (uint16_t x = 0; x < term_width; ++x) {
cell_set(x, i, ' ', current_fg, current_bg, ansi_state->flags);
cell_redraw(x, i);
}
}
}
/* Scroll the terminal up or down. */
static void term_scroll(int how_much) {
term_shift_region(0, term_height, how_much);
/* Remove image data for image cells that are no longer on screen. */
flush_unused_images();
}
static void insert_delete_lines(int how_many) {
if (how_many == 0) return;
if (how_many > 0) {
/* Insert lines is equivalent to scrolling from the current line */
term_shift_region(csr_y,term_height-csr_y,-how_many);
} else {
term_shift_region(csr_y,term_height-csr_y,-how_many);
}
}
/* Is this a wide character? (does wcwidth == 2) */
static int is_wide(uint32_t codepoint) {
if (codepoint < 256) return 0;
return wcwidth(codepoint) == 2;
}
/* Save the row that is about to be scrolled offscreen into the scrollback buffer. */
static void save_scrollback(void) {
/* If the scrollback is already full, remove the oldest element. */
struct scrollback_row * row = NULL;
node_t * n = NULL;
if (max_scrollback && scrollback_list->length == max_scrollback) {
n = list_dequeue(scrollback_list);
row = n->value;
if (row->width < term_width) {
free(row);
row = NULL;
}
}
if (!row) {
row = malloc(sizeof(struct scrollback_row) + sizeof(term_cell_t) * term_width);
row->width = term_width;
}
if (!n) {
list_insert(scrollback_list, row);
} else {
n->value = row;
list_append(scrollback_list, n);
}
for (int i = 0; i < term_width; ++i) {
term_cell_t * cell = &term_buffer[i];
memcpy(&row->cells[i], cell, sizeof(term_cell_t));
}
}
/* Draw the scrollback. */
static void redraw_scrollback(void) {
if (!scrollback_offset) {
term_redraw_all();
return;
}
if (scrollback_offset < term_height) {
for (int i = scrollback_offset; i < term_height; i++) {
int y = i - scrollback_offset;
for (int x = 0; x < term_width; ++x) {
term_mirror_copy(x,i,&term_buffer[y * term_width + x]);
}
}
node_t * node = scrollback_list->tail;
for (int i = 0; i < scrollback_offset; ++i) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
int y = scrollback_offset - 1 - i;
int width = row->width;
if (width > term_width) {
width = term_width;
} else {
for (int x = row->width; x < term_width; ++x) {
term_mirror_set(x, y, ' ', TERM_DEFAULT_FG, TERM_DEFAULT_BG, TERM_DEFAULT_FLAGS);
}
}
for (int x = 0; x < width; ++x) {
term_mirror_copy(x,y,&row->cells[x]);
}
node = node->prev;
}
} else {
node_t * node = scrollback_list->tail;
for (int i = 0; i < scrollback_offset - term_height; ++i) {
node = node->prev;
}
for (int i = scrollback_offset - term_height; i < scrollback_offset; ++i) {
struct scrollback_row * row = (struct scrollback_row *)node->value;
int y = scrollback_offset - 1 - i;
int width = row->width;
if (width > term_width) {
width = term_width;
} else {
for (int x = row->width; x < term_width; ++x) {
term_mirror_set(x, y, ' ', TERM_DEFAULT_FG, TERM_DEFAULT_BG, TERM_DEFAULT_FLAGS);
}
}
for (int x = 0; x < width; ++x) {
term_mirror_copy(x,y,&row->cells[x]);
}
node = node->prev;
}
}
}
static void undraw_cursor(void) {
cell_redraw(csr_x, csr_y);
}
static void normalize_x(int setting_lcf) {
if (csr_x >= term_width) {
csr_x = term_width - 1;
if (setting_lcf) {
csr_h = 1;
}
}
}
static void normalize_y(void) {
if (csr_y == term_height) {
save_scrollback();
term_scroll(1);
csr_y = term_height - 1;
}
}
/*
* ANSI callback for writing characters.
* Parses some things (\n\r, etc.) itself that should probably
* be moved into the ANSI library.
*/
static void term_write(char c) {
static uint32_t unicode_state = 0;
static uint32_t codepoint = 0;
if (!decode(&unicode_state, &codepoint, (uint8_t)c)) {
uint32_t o = codepoint;
codepoint = 0;
switch (c) {
case '\a':
/* boop */
return;
case '\r':
undraw_cursor();
csr_x = csr_h = 0;
draw_cursor();
return;
case '\t':
undraw_cursor();
csr_x += (8 - csr_x % 8);
normalize_x(0);
draw_cursor();
return;
case '\v':
case '\f':
case '\n':
undraw_cursor();
csr_h = 0;
++csr_y;
normalize_y();
draw_cursor();
return;
case '\b':
if (csr_x > 0) {
undraw_cursor();
--csr_x;
draw_cursor();
}
csr_h = 0;
return;
default: {
int wide = is_wide(o);
uint8_t flags = ansi_state->flags;
undraw_cursor();
if (csr_h || (wide && csr_x == term_width - 1)) {
csr_x = csr_h = 0;
++csr_y;
normalize_y();
}
if (wide) {
flags = flags | ANSI_WIDE;
}
cell_set(csr_x,csr_y, o, current_fg, current_bg, flags);
cell_redraw(csr_x,csr_y);
csr_x++;
if (wide && csr_x != term_width) {
cell_set(csr_x, csr_y, 0xFFFF, current_fg, current_bg, ansi_state->flags);
cell_redraw(csr_x,csr_y);
cell_redraw(csr_x-1,csr_y);
csr_x++;
}
normalize_x(1);
draw_cursor();
return;
}
}
} else if (unicode_state == UTF8_REJECT) {
unicode_state = 0;
codepoint = 0;
}
}
/* ANSI callback to set cursor position */
static void term_set_csr(int x, int y) {
cell_redraw(csr_x,csr_y);
if (x < 0) x = 0;
if (x >= term_width) x = term_width - 1;
if (y < 0) y = 0;
if (y >= term_height) y = term_height - 1;
csr_x = x;
csr_y = y;
csr_h = 0;
draw_cursor();
}
/* ANSI callback to get cursor x position */
static int term_get_csr_x(void) {
return csr_x;
}
/* ANSI callback to get cursor y position */
static int term_get_csr_y(void) {
return csr_y;
}
/* ANSI callback to set cell image data. */
static void term_set_cell_contents(int x, int y, char * data) {
char * cell_data = malloc(char_width * char_height * sizeof(uint32_t));
memcpy(cell_data, data, char_width * char_height * sizeof(uint32_t));
list_insert(images_list, cell_data);
cell_set(x, y, ' ',
(uintptr_t)(cell_data) & 0xFFFFFFFF,
(uintptr_t)(cell_data) >> 32,
ANSI_EXT_IMG);
}
/* ANSI callback to get character cell width */
static int term_get_cell_width(void) {
return char_width;
}
/* ANSI callback to get character cell height */
static int term_get_cell_height(void) {
return char_height;
}
/* ANSI callback to set cursor visibility */
static void term_set_csr_show(int on) {
cursor_on = on;
if (on) {
draw_cursor();
}
}
/* ANSI callback to set the foreground/background colors. */
static void term_set_colors(uint32_t fg, uint32_t bg) {
current_fg = fg;
current_bg = bg;
}
/* ANSI callback to force the cursor to draw */
static void term_redraw_cursor() {
if (term_buffer) {
draw_cursor();
}
}
/* ANSI callback to set a cell to a codepoint (only ever used to set spaces) */
static void term_set_cell(int x, int y, uint32_t c) {
cell_set(x, y, c, current_fg, current_bg, ansi_state->flags);
cell_redraw(x, y);
}
/* ANSI callback to clear the terminal. */
static void term_clear(int i) {
if (i == 2) {
/* Clear all */
csr_x = 0;
csr_y = 0;
csr_h = 0;
memset((void *)term_buffer, 0x00, term_width * term_height * sizeof(term_cell_t));
if (!_no_frame) {
render_decors();
}
term_redraw_all();
} else if (i == 0) {
/* Clear after cursor */
for (int x = csr_x; x < term_width; ++x) {
term_set_cell(x, csr_y, ' ');
}
for (int y = csr_y + 1; y < term_height; ++y) {
for (int x = 0; x < term_width; ++x) {
term_set_cell(x, y, ' ');
}
}
} else if (i == 1) {
/* Clear before cursor */
for (int y = 0; y < csr_y; ++y) {
for (int x = 0; x < term_width; ++x) {
term_set_cell(x, y, ' ');
}
}
for (int x = 0; x < csr_x; ++x) {
term_set_cell(x, csr_y, ' ');
}
} else if (i == 3) {
/* Clear scrollback */
if (scrollback_list) {
while (scrollback_list->length) {
node_t * n = list_dequeue(scrollback_list);
free(n->value);
free(n);
}
scrollback_offset = 0;
}
}
flush_unused_images();
}
#define SWAP(T,a,b) do { T _a = a; a = b; b = _a; } while(0);
static void term_switch_buffer(int buffer) {
if (buffer != 0 && buffer != 1) return;
if (buffer != active_buffer) {
active_buffer = buffer;
term_buffer = active_buffer == 0 ? term_buffer_a : term_buffer_b;
SWAP(int, csr_x, _orig_x);
SWAP(int, csr_y, _orig_y);
SWAP(uint32_t, current_fg, _orig_fg);
SWAP(uint32_t, current_bg, _orig_bg);
term_redraw_all();
}
}
/* ANSI callbacks */
term_callbacks_t term_callbacks = {
term_write,
term_set_colors,
term_set_csr,
term_get_csr_x,
term_get_csr_y,
term_set_cell,
term_clear,
term_scroll,
term_redraw_cursor,
input_buffer_stuff,
set_title,
term_set_cell_contents,
term_get_cell_width,
term_get_cell_height,
term_set_csr_show,
term_switch_buffer,
insert_delete_lines,
};
static void handle_input(char c) {
write_input_buffer(&c, 1);
if (scrollback_offset != 0) {
scrollback_offset = 0;
term_redraw_all();
}
}
static void handle_input_s(char * c) {
size_t len = strlen(c);
write_input_buffer(c, len);
if (scrollback_offset != 0) {
scrollback_offset = 0;
term_redraw_all();
}
}
/* Scroll the view up (scrollback) */
static void scroll_up(int amount) {
int i = 0;
while (i < amount && scrollback_list && scrollback_offset < (int)scrollback_list->length) {
scrollback_offset ++;
i++;
}
redraw_scrollback();
}
/* Scroll the view down (scrollback) */
void scroll_down(int amount) {
int i = 0;
while (i < amount && scrollback_list && scrollback_offset != 0) {
scrollback_offset -= 1;
i++;
}
redraw_scrollback();
}
/* Handle a key press from Yutani */
static void key_event(int ret, key_event_t * event) {
if (ret) {
/* Ctrl-Shift-C - Copy selection */
if ((event->modifiers & KEY_MOD_LEFT_SHIFT || event->modifiers & KEY_MOD_RIGHT_SHIFT) &&
(event->modifiers & KEY_MOD_LEFT_CTRL || event->modifiers & KEY_MOD_RIGHT_CTRL) &&
(event->keycode == 'c')) {
if (selection) {
/* Copy selection */
copy_selection();
}
return;
}
/* Ctrl-Shift-V - Paste selection */
if ((event->modifiers & KEY_MOD_LEFT_SHIFT || event->modifiers & KEY_MOD_RIGHT_SHIFT) &&
(event->modifiers & KEY_MOD_LEFT_CTRL || event->modifiers & KEY_MOD_RIGHT_CTRL) &&
(event->keycode == 'v')) {
/* Paste selection */
yutani_special_request(yctx, NULL, YUTANI_SPECIAL_REQUEST_CLIPBOARD);
return;
}
if ((event->modifiers & KEY_MOD_LEFT_CTRL || event->modifiers & KEY_MOD_RIGHT_CTRL) &&
(event->keycode == '0')) {
scale_fonts = 0;
font_scaling = 1.0;
reinit();
return;
}
if ((event->modifiers & KEY_MOD_LEFT_SHIFT || event->modifiers & KEY_MOD_RIGHT_SHIFT) &&
(event->modifiers & KEY_MOD_LEFT_CTRL || event->modifiers & KEY_MOD_RIGHT_CTRL) &&
(event->keycode == '=')) {
scale_fonts = 1;
font_scaling = font_scaling * 1.2;
reinit();
return;
}
if ((event->modifiers & KEY_MOD_LEFT_CTRL || event->modifiers & KEY_MOD_RIGHT_CTRL) &&
(event->keycode == '-')) {
scale_fonts = 1;
font_scaling = font_scaling * 0.8333333;
reinit();
return;
}
/* Left alt */
if (event->modifiers & KEY_MOD_LEFT_ALT || event->modifiers & KEY_MOD_RIGHT_ALT) {
handle_input('\033');
}
/* Shift-Tab */
if ((event->modifiers & KEY_MOD_LEFT_SHIFT || event->modifiers & KEY_MOD_RIGHT_SHIFT) &&
event->key == '\t') {
handle_input_s("\033[Z");
return;
}
/* ENTER = reads as linefeed, should be carriage return */
if (event->keycode == 10) {
handle_input('\r');
return;
}
/* BACKSPACE = reads as ^H, should be ^? */
if (event->keycode == 8) {
handle_input(0x7F);
return;
}
/* Pass key value to PTY */
handle_input(event->key);
} else {
/* Special keys without ->key values */
/* Only trigger on key down */
if (event->action == KEY_ACTION_UP) return;
switch (event->keycode) {
case KEY_F1:
handle_input_s("\033OP");
break;
case KEY_F2:
handle_input_s("\033OQ");
break;
case KEY_F3:
handle_input_s("\033OR");
break;
case KEY_F4:
handle_input_s("\033OS");
break;
case KEY_F5:
handle_input_s("\033[15~");
break;
case KEY_F6:
handle_input_s("\033[17~");
break;
case KEY_F7:
handle_input_s("\033[18~");
break;
case KEY_F8:
handle_input_s("\033[19~");
break;
case KEY_F9:
handle_input_s("\033[20~");
break;
case KEY_F10:
handle_input_s("\033[21~");
break;
case KEY_F11:
handle_input_s("\033[23~");
break;
case KEY_F12:
/* Toggle decorations */
if (!_fullscreen) {
_no_frame = !_no_frame;
update_bounds();
window_width = window->width - decor_width;
window_height = window->height - (decor_height + menu_bar_height);
reinit();
}
break;
case KEY_ARROW_UP:
if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[6A");
} else if (event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[5A");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[4A");
} else if (event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[3A");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
handle_input_s("\033[2A");
} else {
handle_input_s("\033[A");
}
break;
case KEY_ARROW_DOWN:
if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[6B");
} else if (event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[5B");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[4B");
} else if (event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[3B");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
handle_input_s("\033[2B");
} else {
handle_input_s("\033[B");
}
break;
case KEY_ARROW_RIGHT:
if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[6C");
} else if (event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[5C");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[4C");
} else if (event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[3C");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
handle_input_s("\033[2C");
} else {
handle_input_s("\033[C");
}
break;
case KEY_ARROW_LEFT:
if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[6D");
} else if (event->modifiers & KEY_MOD_LEFT_CTRL) {
handle_input_s("\033[5D");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT && event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[4D");
} else if (event->modifiers & KEY_MOD_LEFT_ALT) {
handle_input_s("\033[3D");
} else if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
handle_input_s("\033[2D");
} else {
handle_input_s("\033[D");
}
break;
case KEY_PAGE_UP:
if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
scroll_up(term_height/2);
} else {
handle_input_s("\033[5~");
}
break;
case KEY_PAGE_DOWN:
if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
scroll_down(term_height/2);
} else {
handle_input_s("\033[6~");
}
break;
case KEY_HOME:
if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
if (scrollback_list) {
scrollback_offset = scrollback_list->length;
redraw_scrollback();
}
} else {
handle_input_s("\033[H");
}
break;
case KEY_END:
if (event->modifiers & KEY_MOD_LEFT_SHIFT) {
scrollback_offset = 0;
redraw_scrollback();
} else {
handle_input_s("\033[F");
}
break;
case KEY_DEL:
handle_input_s("\033[3~");
break;
case KEY_INSERT:
handle_input_s("\033[2~");
break;
}
}
}
/* Check if the Terminal should close. */
static void check_for_exit(void) {
/* If something has set exit_application, we should exit. */
if (exit_application) return;
pid_t pid = waitpid(-1, NULL, WNOHANG);
/* If the child has exited, we should exit. */
if (pid != child_pid) return;
/* Clean up */
exit_application = 1;
/* Write [Process terminated] */
char exit_message[] = "[Process terminated]\n";
write(fd_slave, exit_message, sizeof(exit_message));
close(input_buffer_semaphore[1]);
}
static term_cell_t * copy_terminal(int old_width, int old_height, term_cell_t * term_buffer) {
term_cell_t * new_term_buffer = malloc(sizeof(term_cell_t) * term_width * term_height);
memset(new_term_buffer, 0x0, sizeof(term_cell_t) * term_width * term_height);
int offset = 0;
if (term_height < old_height) {
while (csr_y >= term_height) {
offset++;
old_height--;
csr_y--;
}
}
for (int row = 0; row < min(old_height, term_height); ++row) {
for (int col = 0; col < min(old_width, term_width); ++col) {
term_cell_t * old_cell = &term_buffer[(row+offset) * old_width + col];
term_cell_t * new_cell = &new_term_buffer[row * term_width + col];
*new_cell = *old_cell;
}
}
if (csr_x >= term_width) {
csr_x = term_width-1;
}
return new_term_buffer;
}
/* Reinitialize the terminal after a resize. */
static void reinit(void) {
/* Figure out character sizes if fonts have changed. */
if (_use_aa) {
char_width = 8;
char_height = 17;
font_size = 13;
char_offset = 13;
if (scale_fonts) {
font_size *= font_scaling;
char_height *= font_scaling;
char_width *= font_scaling;
char_offset *= font_scaling;
}
} else {
char_width = LARGE_FONT_CELL_WIDTH;
char_height = LARGE_FONT_CELL_HEIGHT;
}
int old_width = term_width;
int old_height = term_height;
/* Resize the terminal buffer */
term_width = window_width / char_width;
term_height = window_height / char_height;
if (term_width == old_width && term_height == old_height) {
memset(term_display, 0xFF, sizeof(term_cell_t) * term_width * term_height);
draw_fill(ctx, rgba(0,0,0, TERM_DEFAULT_OPAC));
render_decors();
maybe_flip_display(1);
return;
}
if (term_buffer) {
term_cell_t * new_a = copy_terminal(old_width, old_height, term_buffer_a);
term_cell_t * new_b = copy_terminal(old_width, old_height, term_buffer_b);
free(term_buffer_a);
term_buffer_a = new_a;
free(term_buffer_b);
term_buffer_b = new_b;
if (active_buffer == 0) {
term_buffer = new_a;
} else {
term_buffer = new_b;
}
} else {
term_buffer_a = malloc(sizeof(term_cell_t) * term_width * term_height);
memset(term_buffer_a, 0x0, sizeof(term_cell_t) * term_width * term_height);
term_buffer_b = malloc(sizeof(term_cell_t) * term_width * term_height);
memset(term_buffer_b, 0x0, sizeof(term_cell_t) * term_width * term_height);
term_buffer = term_buffer_a;
}
term_mirror = realloc(term_mirror, sizeof(term_cell_t) * term_width * term_height);
memcpy(term_mirror, term_buffer, sizeof(term_cell_t) * term_width * term_height);
term_display = realloc(term_display, sizeof(term_cell_t) * term_width * term_height);
memset(term_display, 0xFF, sizeof(term_cell_t) * term_width * term_height);
/* Reset the ANSI library, ensuring we keep certain values */
int old_mouse_state = 0;
if (ansi_state) old_mouse_state = ansi_state->mouse_on;
ansi_state = ansi_init(ansi_state, term_width, term_height, &term_callbacks);
ansi_state->mouse_on = old_mouse_state;
/* Send window size change ioctl */
struct winsize w;
w.ws_row = term_height;
w.ws_col = term_width;
w.ws_xpixel = term_width * char_width;
w.ws_ypixel = term_height * char_height;
ioctl(fd_master, TIOCSWINSZ, &w);
/* Redraw the window */
draw_fill(ctx, rgba(0,0,0, TERM_DEFAULT_OPAC));
render_decors();
term_redraw_all();
}
static void update_bounds(void) {
if (!_no_frame) {
struct decor_bounds bounds;
decor_get_bounds(window, &bounds);
decor_left_width = bounds.left_width;
decor_top_height = bounds.top_height;
decor_right_width = bounds.right_width;
decor_bottom_height = bounds.bottom_height;
decor_width = bounds.width;
decor_height = bounds.height;
menu_bar_height = 24;
} else {
decor_left_width = 0;
decor_top_height = 0;
decor_right_width = 0;
decor_bottom_height = 0;
decor_width = 0;
decor_height = 0;
menu_bar_height = 0;
}
}
/* Handle window resize event. */
static void resize_finish(int width, int height) {
static int resize_attempts = 0;
/* Calculate window size */
update_bounds();
int extra_x = decor_width;
int extra_y = decor_height + menu_bar_height;
int t_window_width = width - extra_x;
int t_window_height = height - extra_y;
/* Prevent the terminal from becoming too small. */
if (t_window_width < char_width * 20 || t_window_height < char_height * 10) {
resize_attempts++;
int n_width = extra_x + max(char_width * 20, t_window_width);
int n_height = extra_y + max(char_height * 10, t_window_height);
yutani_window_resize_offer(yctx, window, n_width, n_height);
return;
}
/* If requested, ensure the terminal resizes to a fixed size based on the cell size. */
if (!_free_size && ((t_window_width % char_width != 0 || t_window_height % char_height != 0) && resize_attempts < 3)) {
resize_attempts++;
int n_width = extra_x + t_window_width - (t_window_width % char_width);
int n_height = extra_y + t_window_height - (t_window_height % char_height);
yutani_window_resize_offer(yctx, window, n_width, n_height);
return;
}
resize_attempts = 0;
/* Accept new window size */
yutani_window_resize_accept(yctx, window, width, height);
window_width = window->width - extra_x;
window_height = window->height - extra_y;
/* Reinitialize the graphics library */
reinit_graphics_yutani(ctx, window);
/* Reinitialize the terminal buffer and ANSI library */
reinit();
maybe_flip_display(1);
/* We are done resizing. */
yutani_window_resize_done(yctx, window);
yutani_flip(yctx, window);
}
/* Insert a mouse event sequence into the PTY */
static void mouse_event(int button, int x, int y) {
if (ansi_state->mouse_on & TERMEMU_MOUSE_SGR) {
char buf[100];
sprintf(buf,"\033[<%d;%d;%d%c", button == 3 ? 0 : button, x+1, y+1, button == 3 ? 'm' : 'M');
handle_input_s(buf);
} else {
char buf[7];
sprintf(buf, "\033[M%c%c%c", button + 32, x + 33, y + 33);
handle_input_s(buf);
}
}
/* Handle Yutani messages */
static void * handle_incoming(void) {
static uint64_t last_click = 0;
yutani_msg_t * m = yutani_poll(yctx);
while (m) {
if (menu_process_event(yctx, m)) {
render_decors();
}
switch (m->type) {
case YUTANI_MSG_KEY_EVENT:
{
struct yutani_msg_key_event * ke = (void*)m->data;
int ret = (ke->event.action == KEY_ACTION_DOWN) && (ke->event.key);
key_event(ret, &ke->event);
}
break;
case YUTANI_MSG_WINDOW_FOCUS_CHANGE:
{
struct yutani_msg_window_focus_change * wf = (void*)m->data;
yutani_window_t * win = hashmap_get(yctx->windows, (void*)(uintptr_t)wf->wid);
if (win == window) {
win->focused = wf->focused;
render_decors();
draw_cursor();
maybe_flip_display(1);
}
}
break;
case YUTANI_MSG_WINDOW_CLOSE:
{
struct yutani_msg_window_close * wc = (void*)m->data;
if (wc->wid == window->wid) {
kill(child_pid, SIGKILL);
exit_application = 1;
}
}
break;
case YUTANI_MSG_SESSION_END:
{
kill(child_pid, SIGKILL);
exit_application = 1;
}
break;
case YUTANI_MSG_RESIZE_OFFER:
{
struct yutani_msg_window_resize * wr = (void*)m->data;
resize_finish(wr->width, wr->height);
}
break;
case YUTANI_MSG_CLIPBOARD:
{
struct yutani_msg_clipboard * cb = (void *)m->data;
if (selection_text) {
free(selection_text);
}
if (*cb->content == '\002') {
int size = atoi(&cb->content[2]);
FILE * clipboard = yutani_open_clipboard(yctx);
selection_text = malloc(size + 1);
fread(selection_text, 1, size, clipboard);
selection_text[size] = '\0';
fclose(clipboard);
} else {
selection_text = malloc(cb->size+1);
memcpy(selection_text, cb->content, cb->size);
selection_text[cb->size] = '\0';
}
if (ansi_state->paste_mode) {
handle_input_s("\033[200~");
handle_input_s(selection_text);
handle_input_s("\033[201~");
} else {
handle_input_s(selection_text);
}
}
break;
case YUTANI_MSG_WINDOW_MOUSE_EVENT:
{
struct yutani_msg_window_mouse_event * me = (void*)m->data;
if (me->wid != window->wid) break;
if (!_no_frame) {
int decor_response = decor_handle_event(yctx, m);
switch (decor_response) {
case DECOR_CLOSE:
kill(child_pid, SIGKILL);
exit_application = 1;
break;
case DECOR_RIGHT:
/* right click in decoration, show appropriate menu */
decor_show_default_menu(window, window->x + me->new_x, window->y + me->new_y);
break;
default:
break;
}
menu_bar_mouse_event(yctx, window, &terminal_menu_bar, me, me->new_x, me->new_y);
}
if (me->new_x < 0 || me->new_y < 0 ||
(!_no_frame && (me->new_x >= (int)window_width + (int)decor_width ||
me->new_y < (int)decor_top_height+menu_bar_height ||
me->new_y >= (int)(window_height + decor_top_height+menu_bar_height) ||
me->new_x < (int)decor_left_width ||
me->new_x >= (int)(window_width + decor_left_width))) ||
(_no_frame && (me->new_x >= (int)window_width || me->new_y >= (int)window_height))) {
if (window->mouse_state == YUTANI_CURSOR_TYPE_IBEAM) {
yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESET);
}
break;
}
if (!(ansi_state->mouse_on & TERMEMU_MOUSE_ENABLE)) {
if (window->mouse_state == YUTANI_CURSOR_TYPE_RESET) {
yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_IBEAM);
}
} else {
if (window->mouse_state == YUTANI_CURSOR_TYPE_IBEAM) {
yutani_window_show_mouse(yctx, window, YUTANI_CURSOR_TYPE_RESET);
}
}
int new_x = me->new_x;
int new_y = me->new_y;
if (!_no_frame) {
new_x -= decor_left_width;
new_y -= decor_top_height+menu_bar_height;
}
/* Convert from coordinate to cell positon */
new_x /= char_width;
new_y /= char_height;
if (new_x < 0 || new_y < 0) break;
if (new_x >= term_width || new_y >= term_height) break;
/* Map Cursor Action */
if ((ansi_state->mouse_on & TERMEMU_MOUSE_ENABLE) && !(me->modifiers & YUTANI_KEY_MODIFIER_SHIFT)) {
if (me->buttons & YUTANI_MOUSE_SCROLL_UP) {
mouse_event(32+32, new_x, new_y);
} else if (me->buttons & YUTANI_MOUSE_SCROLL_DOWN) {
mouse_event(32+32+1, new_x, new_y);
}
if (me->buttons != button_state) {
/* Figure out what changed */
if (me->buttons & YUTANI_MOUSE_BUTTON_LEFT &&
!(button_state & YUTANI_MOUSE_BUTTON_LEFT))
mouse_event(0, new_x, new_y);
if (me->buttons & YUTANI_MOUSE_BUTTON_MIDDLE &&
!(button_state & YUTANI_MOUSE_BUTTON_MIDDLE))
mouse_event(1, new_x, new_y);
if (me->buttons & YUTANI_MOUSE_BUTTON_RIGHT &&
!(button_state & YUTANI_MOUSE_BUTTON_RIGHT))
mouse_event(2, new_x, new_y);
if (!(me->buttons & YUTANI_MOUSE_BUTTON_LEFT) &&
button_state & YUTANI_MOUSE_BUTTON_LEFT)
mouse_event(3, new_x, new_y);
if (!(me->buttons & YUTANI_MOUSE_BUTTON_MIDDLE) &&
button_state & YUTANI_MOUSE_BUTTON_MIDDLE)
mouse_event(3, new_x, new_y);
if (!(me->buttons & YUTANI_MOUSE_BUTTON_RIGHT) &&
button_state & YUTANI_MOUSE_BUTTON_RIGHT)
mouse_event(3, new_x, new_y);
last_mouse_x = new_x;
last_mouse_y = new_y;
button_state = me->buttons;
} else if (ansi_state->mouse_on & TERMEMU_MOUSE_DRAG) {
/* Report motion for pressed buttons */
if (last_mouse_x == new_x && last_mouse_y == new_y) break;
if (button_state & YUTANI_MOUSE_BUTTON_LEFT) mouse_event(32, new_x, new_y);
if (button_state & YUTANI_MOUSE_BUTTON_MIDDLE) mouse_event(33, new_x, new_y);
if (button_state & YUTANI_MOUSE_BUTTON_RIGHT) mouse_event(34, new_x, new_y);
last_mouse_x = new_x;
last_mouse_y = new_y;
}
} else {
if (me->command == YUTANI_MOUSE_EVENT_DOWN && me->buttons & YUTANI_MOUSE_BUTTON_LEFT) {
redraw_scrollback();
uint64_t now = get_ticks();
if (now - last_click < 500000UL && (new_x == selection_start_x && new_y == selection_start_y)) {
/* Double click */
while (selection_start_x > 0) {
term_cell_t * c = cell_at(selection_start_x-1, selection_start_y);
if (!c || c->c == ' ' || !c->c) break;
selection_start_x--;
}
while (selection_end_x < term_width - 1) {
term_cell_t * c = cell_at(selection_end_x+1, selection_end_y);
if (!c || c->c == ' ' || !c->c) break;
selection_end_x++;
}
selection = 1;
} else {
last_click = get_ticks();
selection_start_x = new_x;
selection_start_y = new_y;
selection_end_x = new_x;
selection_end_y = new_y;
selection = 0;
}
redraw_selection();
}
if (me->command == YUTANI_MOUSE_EVENT_DRAG && me->buttons & YUTANI_MOUSE_BUTTON_LEFT ){
mark_selection();
selection_end_x = new_x;
selection_end_y = new_y;
selection = 1;
flip_selection();
}
if (me->command == YUTANI_MOUSE_EVENT_RAISE) {
if (me->new_x == me->old_x && me->new_y == me->old_y) {
selection = 0;
term_redraw_all();
redraw_scrollback();
} /* else selection */
}
if (me->buttons & YUTANI_MOUSE_SCROLL_UP) {
scroll_up(5);
} else if (me->buttons & YUTANI_MOUSE_SCROLL_DOWN) {
scroll_down(5);
} else if (me->buttons & YUTANI_MOUSE_BUTTON_RIGHT) {
if (!menu_right_click->window) {
menu_prepare(menu_right_click, yctx);
if (menu_right_click->window) {
if (window->x + me->new_x + menu_right_click->window->width > yctx->display_width) {
yutani_window_move(yctx, menu_right_click->window, window->x + me->new_x - menu_right_click->window->width, window->y + me->new_y);
} else {
yutani_window_move(yctx, menu_right_click->window, window->x + me->new_x, window->y + me->new_y);
}
yutani_flip(yctx, menu_right_click->window);
}
}
}
}
}
break;
default:
break;
}
free(m);
m = yutani_poll_async(yctx);
}
return NULL;
}
/*
* Menu Actions
*/
/* File > Exit */
static void _menu_action_exit(struct MenuEntry * self) {
kill(child_pid, SIGKILL);
exit_application = 1;
}
/* We need to track these so we can retitle both of them */
static struct MenuEntry * _menu_toggle_borders_context = NULL;
static struct MenuEntry * _menu_toggle_borders_bar = NULL;
static void _menu_action_hide_borders(struct MenuEntry * self) {
_no_frame = !(_no_frame);
update_bounds();
window_width = window->width - decor_width;
window_height = window->height - (decor_height + menu_bar_height);
menu_update_icon(_menu_toggle_borders_context, _no_frame ? NULL : "check");
menu_update_icon(_menu_toggle_borders_bar, _no_frame ? NULL : "check");
reinit();
}
static struct MenuEntry * _menu_toggle_bitmap_context = NULL;
static struct MenuEntry * _menu_toggle_bitmap_bar = NULL;
static void _menu_action_toggle_tt(struct MenuEntry * self) {
_use_aa = !(_use_aa);
menu_update_icon(_menu_toggle_bitmap_context, _use_aa ? NULL : "check");
menu_update_icon(_menu_toggle_bitmap_bar, _use_aa ? NULL : "check");
reinit();
}
static void _menu_action_toggle_free_size(struct MenuEntry * self) {
_free_size = !(_free_size);
menu_update_icon(self, _free_size ? NULL : "check");
}
static void _menu_action_show_about(struct MenuEntry * self) {
char about_cmd[1024] = "\0";
strcat(about_cmd, "about \"About Terminal\" /usr/share/icons/48/utilities-terminal.png \"ToaruOS Terminal\" \"© 2013-2022 K. Lange\n-\nPart of ToaruOS, which is free software\nreleased under the NCSA/University of Illinois\nlicense.\n-\n%https://toaruos.org\n%https://github.com/klange/toaruos\" ");
char coords[100];
sprintf(coords, "%d %d &", (int)window->x + (int)window->width / 2, (int)window->y + (int)window->height / 2);
strcat(about_cmd, coords);
system(about_cmd);
render_decors();
}
static void _menu_action_show_help(struct MenuEntry * self) {
system("help-browser terminal.trt &");
render_decors();
}
static void _menu_action_copy(struct MenuEntry * self) {
copy_selection();
}
static void _menu_action_paste(struct MenuEntry * self) {
yutani_special_request(yctx, NULL, YUTANI_SPECIAL_REQUEST_CLIPBOARD);
}
static void _menu_action_set_scale(struct MenuEntry * self) {
struct MenuEntry_Normal * _self = (struct MenuEntry_Normal *)self;
if (!_self->action) {
scale_fonts = 0;
font_scaling = 1.0;
} else {
scale_fonts = 1;
font_scaling = atof(_self->action);
}
reinit();
}
static void render_decors_callback(struct menu_bar * self) {
(void)self;
render_decors();
}
/**
* Geometry argument follows this format:
* [@]WxH[+X,Y]
*
* If @ is present, W and H are in characters.
* If + is present, X and Y are the left and top offset.
*/
static void parse_geometry(char ** argv, char * str) {
int in_chars = 0;
if (*str == '@') {
in_chars = 1;
str++;
}
/* Split on 'x', which is required. */
char * c = strstr(str, "x");
if (!c) return; /* Ignore invalid arg */
*c = '\0';
c++;
/* Find optional + that starts position */
char * plus = strstr(c, "+");
if (plus) {
*plus = '\0';
plus++;
}
/* Parse size */
window_width = atoi(str) * (in_chars ? char_width : 1);
window_height = atoi(c) * (in_chars ? char_height : 1);
if (plus) {
/* If there was a plus, let's look for a comma */
char * comma = strstr(plus, ",");
if (!comma) return; /* Skip invalid position */
*comma = '\0';
comma++;
window_position_set = 1;
window_left = atoi(plus);
window_top = atoi(comma);
}
}
int main(int argc, char ** argv) {
int _flags = 0;
window_width = char_width * 80;
window_height = char_height * 24;
static struct option long_opts[] = {
{"fullscreen", no_argument, 0, 'F'},
{"bitmap", no_argument, 0, 'b'},
{"scale", required_argument, 0, 's'},
{"help", no_argument, 0, 'h'},
{"grid", no_argument, 0, 'x'},
{"no-frame", no_argument, 0, 'n'},
{"geometry", required_argument, 0, 'g'},
{"blurred", no_argument, 0, 'B'},
{"scrollback", required_argument, 0, 'S'},
{0,0,0,0}
};
/* Read some arguments */
int index, c;
while ((c = getopt_long(argc, argv, "bhxnFls:g:BS:", long_opts, &index)) != -1) {
if (!c) {
if (long_opts[index].flag == 0) {
c = long_opts[index].val;
}
}
switch (c) {
case 'x':
_free_size = 0;
break;
case 'n':
_no_frame = 1;
break;
case 'F':
_fullscreen = 1;
_no_frame = 1;
break;
case 'b':
_use_aa = 0;
break;
case 'h':
usage(argv);
return 0;
break;
case 's':
scale_fonts = 1;
font_scaling = atof(optarg);
break;
case 'g':
parse_geometry(argv,optarg);
break;
case 'B':
_flags = YUTANI_WINDOW_FLAG_BLUR_BEHIND;
break;
case 'S':
max_scrollback = strtoull(optarg,NULL,10);
break;
case '?':
break;
default:
break;
}
}
/* Initialize the windowing library */
yctx = yutani_init();
if (!yctx) {
fprintf(stderr, "%s: failed to connect to compositor\n", argv[0]);
return 1;
}
_tt_font_normal = tt_font_from_shm("monospace");
_tt_font_bold = tt_font_from_shm("monospace.bold");
_tt_font_oblique = tt_font_from_shm("monospace.italic");
_tt_font_bold_oblique = tt_font_from_shm("monospace.bolditalic");
_tt_font_fallback = _tt_font_normal;
_tt_font_japanese = tt_font_from_file("/usr/share/fonts/truetype/vlgothic/VL-Gothic-Regular.ttf"); /* Might not be present */
/* Full screen mode forces window size to be that the display server */
if (_fullscreen) {
window_width = yctx->display_width;
window_height = yctx->display_height;
}
if (_no_frame) {
window = yutani_window_create_flags(yctx, window_width, window_height, YUTANI_WINDOW_FLAG_NO_ANIMATION);
} else {
init_decorations();
struct decor_bounds bounds;
decor_get_bounds(NULL, &bounds);
window = yutani_window_create_flags(yctx, window_width + bounds.width, window_height + bounds.height + menu_bar_height, _flags);
yutani_window_update_shape(yctx, window, 20);
}
if (_fullscreen) {
/* If fullscreen, assume we're always focused and put us on the bottom. */
yutani_set_stack(yctx, window, YUTANI_ZORDER_BOTTOM);
window->focused = 1;
} else {
window->focused = 0;
}
update_bounds();
/* Set up menus */
terminal_menu_bar.entries = terminal_menu_entries;
terminal_menu_bar.redraw_callback = render_decors_callback;
struct MenuEntry * _menu_exit = menu_create_normal("exit","exit","Exit", _menu_action_exit);
struct MenuEntry * _menu_copy = menu_create_normal(NULL, NULL, "Copy", _menu_action_copy);
struct MenuEntry * _menu_paste = menu_create_normal(NULL, NULL, "Paste", _menu_action_paste);
menu_right_click = menu_create();
menu_insert(menu_right_click, _menu_copy);
menu_insert(menu_right_click, _menu_paste);
menu_insert(menu_right_click, menu_create_separator());
if (!_fullscreen) {
_menu_toggle_borders_context = menu_create_normal(_no_frame ? NULL : "check", NULL, "Show borders", _menu_action_hide_borders);
menu_insert(menu_right_click, _menu_toggle_borders_context);
}
_menu_toggle_bitmap_context = menu_create_normal(_use_aa ? NULL : "check", NULL, "Bitmap font", _menu_action_toggle_tt);
menu_insert(menu_right_click, _menu_toggle_bitmap_context);
menu_insert(menu_right_click, menu_create_separator());
menu_insert(menu_right_click, _menu_exit);
/* Menu Bar menus */
terminal_menu_bar.set = menu_set_create();
struct MenuList * m;
m = menu_create(); /* File */
menu_insert(m, _menu_exit);
menu_set_insert(terminal_menu_bar.set, "file", m);
m = menu_create();
menu_insert(m, _menu_copy);
menu_insert(m, _menu_paste);
menu_set_insert(terminal_menu_bar.set, "edit", m);
m = menu_create();
menu_insert(m, menu_create_normal(NULL, "0.75", "75%", _menu_action_set_scale));
menu_insert(m, menu_create_normal(NULL, NULL, "100%", _menu_action_set_scale));
menu_insert(m, menu_create_normal(NULL, "1.5", "150%", _menu_action_set_scale));
menu_insert(m, menu_create_normal(NULL, "2.0", "200%", _menu_action_set_scale));
menu_set_insert(terminal_menu_bar.set, "zoom", m);
m = menu_create();
menu_insert(m, menu_create_normal(NULL, NULL, "View stats", _menu_action_cache_stats));
menu_insert(m, menu_create_normal(NULL, NULL, "Clear cache", _menu_action_clear_cache));
menu_set_insert(terminal_menu_bar.set, "cache", m);
m = menu_create();
_menu_toggle_borders_bar = menu_create_normal(_no_frame ? NULL : "check", NULL, "Show borders", _menu_action_hide_borders);
menu_insert(m, _menu_toggle_borders_bar);
menu_insert(m, menu_create_submenu(NULL,"zoom","Set zoom..."));
_menu_toggle_bitmap_bar = menu_create_normal(_use_aa ? NULL : "check", NULL, "Bitmap font", _menu_action_toggle_tt);
menu_insert(m, _menu_toggle_bitmap_bar);
menu_insert(m, menu_create_normal(_free_size ? NULL : "check", NULL, "Snap to Cell Size", _menu_action_toggle_free_size));
menu_insert(m, menu_create_separator());
menu_insert(m, menu_create_normal(NULL, NULL, "Redraw", _menu_action_redraw));
menu_insert(m, menu_create_submenu(NULL,"cache","Glyph cache..."));
menu_set_insert(terminal_menu_bar.set, "view", m);
m = menu_create();
menu_insert(m, menu_create_normal("help","help","Contents", _menu_action_show_help));
menu_insert(m, menu_create_separator());
menu_insert(m, menu_create_normal("star","star","About Terminal", _menu_action_show_about));
menu_set_insert(terminal_menu_bar.set, "help", m);
scrollback_list = list_create();
images_list = list_create();
/* Initialize the graphics context */
ctx = init_graphics_yutani_double_buffer(window);
/* Clear to black */
draw_fill(ctx, rgba(0,0,0,0));
if (window_position_set) {
/* Move to requested position */
yutani_window_move(yctx, window, window_left, window_top);
} else {
/* Move window to screen center */
yutani_window_move(yctx, window, yctx->display_width / 2 - window->width / 2, yctx->display_height / 2 - window->height / 2);
}
/* Open a PTY */
openpty(&fd_master, &fd_slave, NULL, NULL, NULL);
terminal = fdopen(fd_slave, "w");
/* Initialize the terminal buffer and ANSI library for the first time. */
reinit();
/* Run thread to handle asynchronous writes to the tty */
pthread_t input_buffer_thread;
pipe(input_buffer_semaphore);
input_buffer_queue = list_create();
pthread_create(&input_buffer_thread, NULL, handle_input_writing, NULL);
/* Make sure we're not passing anything to stdin on the child */
fflush(stdin);
/* Fork off child */
child_pid = fork();
if (!child_pid) {
setsid();
/* Prepare stdin/out/err */
dup2(fd_slave, 0);
dup2(fd_slave, 1);
dup2(fd_slave, 2);
ioctl(STDIN_FILENO, TIOCSCTTY, &(int){1});
tcsetpgrp(STDIN_FILENO, getpid());
/* Set the TERM environment variable. */
putenv("TERM=toaru");
/* Execute requested initial process */
if (argv[optind] != NULL) {
/* Run something specified by the terminal startup */
execvp(argv[optind], &argv[optind]);
fprintf(stderr, "Failed to launch requested startup application.\n");
} else {
/* Run the user's shell */
char * shell = getenv("SHELL");
if (!shell) shell = "/bin/sh"; /* fallback */
char * tokens[] = {shell,NULL};
execvp(tokens[0], tokens);
exit(1);
}
/* Failed to start */
exit_application = 1;
return 1;
} else {
/* Set up fswait to check Yutani and the PTY master */
int fds[2] = {fileno(yctx->sock), fd_master};
/* PTY read buffer */
unsigned char buf[4096];
int next_wait = 200;
while (!exit_application) {
/* Wait for something to happen. */
int res[] = {0,0};
fswait3(2,fds,next_wait,res);
/* Check if the child application has closed. */
check_for_exit();
maybe_flip_cursor();
int force_flip = (!res[1] && (next_wait == 10));
if (res[1]) {
/* Read from PTY */
ssize_t r = read(fd_master, buf, 4096);
for (ssize_t i = 0; i < r; ++i) {
ansi_put(ansi_state, buf[i]);
}
next_wait = 10;
} else {
next_wait = 200;
}
if (res[0]) {
/* Handle Yutani events. */
handle_incoming();
}
maybe_flip_display(force_flip);
}
}
close(input_buffer_semaphore[1]);
/* Windows will close automatically on exit. */
return 0;
}
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