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559 lines
13 KiB
559 lines
13 KiB
/*
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* Copyright © 2008 Kristian Høgsberg
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include <pty.h>
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#include <ctype.h>
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#include <cairo.h>
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#include <glib.h>
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#include <X11/keysym.h>
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#include "wayland-util.h"
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#include "wayland-client.h"
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#include "wayland-glib.h"
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#include "window.h"
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static int option_fullscreen;
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#define MOD_SHIFT 0x01
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#define MOD_ALT 0x02
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#define MOD_CTRL 0x04
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struct terminal {
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struct window *window;
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struct display *display;
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char *data;
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int width, height, start, row, column;
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int fd, master;
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GIOChannel *channel;
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uint32_t modifiers;
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char escape[64];
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int escape_length;
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int state;
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int margin;
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int fullscreen;
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int focused;
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struct color_scheme *color_scheme;
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cairo_font_extents_t extents;
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};
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static char *
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terminal_get_row(struct terminal *terminal, int row)
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{
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int index;
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index = (row + terminal->start) % terminal->height;
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return &terminal->data[index * (terminal->width + 1)];
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}
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static void
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terminal_resize(struct terminal *terminal, int width, int height)
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{
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size_t size;
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char *data;
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int i, l, total_rows, start;
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if (terminal->width == width && terminal->height == height)
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return;
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size = (width + 1) * height;
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data = malloc(size);
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memset(data, 0, size);
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if (terminal->data) {
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if (width > terminal->width)
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l = terminal->width;
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else
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l = width;
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if (terminal->height > height) {
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total_rows = height;
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start = terminal->height - height;
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} else {
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total_rows = terminal->height;
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start = 0;
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}
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for (i = 0; i < total_rows; i++)
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memcpy(data + (width + 1) * i,
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terminal_get_row(terminal, i), l);
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free(terminal->data);
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}
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terminal->width = width;
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terminal->height = height;
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terminal->data = data;
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if (terminal->row >= terminal->height)
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terminal->row = terminal->height - 1;
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if (terminal->column >= terminal->width)
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terminal->column = terminal->width - 1;
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terminal->start = 0;
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}
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struct color_scheme { struct { double r, g, b, a; } fg, bg; }
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matrix_colors = { { 0, 0.7, 0, 1 }, { 0, 0, 0, 0.9 } },
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jbarnes_colors = { { 1, 1, 1, 1 }, { 0, 0, 0, 1 } };
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static void
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terminal_draw_contents(struct terminal *terminal)
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{
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struct rectangle rectangle;
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cairo_t *cr;
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cairo_font_extents_t extents;
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int i, top_margin, side_margin;
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cairo_surface_t *surface;
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double d;
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window_get_child_rectangle(terminal->window, &rectangle);
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surface = display_create_surface(terminal->display, &rectangle);
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cr = cairo_create(surface);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_set_source_rgba(cr,
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terminal->color_scheme->bg.r,
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terminal->color_scheme->bg.g,
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terminal->color_scheme->bg.b,
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terminal->color_scheme->bg.a);
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cairo_paint(cr);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_set_source_rgba(cr,
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terminal->color_scheme->fg.r,
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terminal->color_scheme->fg.g,
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terminal->color_scheme->fg.b,
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terminal->color_scheme->fg.a);
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cairo_select_font_face (cr, "mono",
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CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size(cr, 14);
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cairo_font_extents(cr, &extents);
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side_margin = (rectangle.width - terminal->width * extents.max_x_advance) / 2;
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top_margin = (rectangle.height - terminal->height * extents.height) / 2;
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for (i = 0; i < terminal->height; i++) {
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cairo_move_to(cr, side_margin,
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top_margin + extents.ascent + extents.height * i);
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cairo_show_text(cr, terminal_get_row(terminal, i));
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}
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d = terminal->focused ? 0 : 0.5;
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cairo_set_line_width(cr, 1);
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cairo_move_to(cr, side_margin + terminal->column * extents.max_x_advance + d,
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top_margin + terminal->row * extents.height + d);
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cairo_rel_line_to(cr, extents.max_x_advance - 2 * d, 0);
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cairo_rel_line_to(cr, 0, extents.height - 2 * d);
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cairo_rel_line_to(cr, -extents.max_x_advance + 2 * d, 0);
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cairo_close_path(cr);
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if (terminal->focused)
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cairo_fill(cr);
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else
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cairo_stroke(cr);
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cairo_destroy(cr);
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window_copy_surface(terminal->window,
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&rectangle,
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surface);
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cairo_surface_destroy(surface);
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}
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static void
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terminal_draw(struct terminal *terminal)
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{
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struct rectangle rectangle;
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int32_t width, height;
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window_get_child_rectangle(terminal->window, &rectangle);
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width = (rectangle.width - 2 * terminal->margin) /
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(int32_t) terminal->extents.max_x_advance;
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height = (rectangle.height - 2 * terminal->margin) /
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(int32_t) terminal->extents.height;
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terminal_resize(terminal, width, height);
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if (!terminal->fullscreen) {
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rectangle.width = terminal->width *
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terminal->extents.max_x_advance + 2 * terminal->margin;
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rectangle.height = terminal->height *
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terminal->extents.height + 2 * terminal->margin;
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window_set_child_size(terminal->window, &rectangle);
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}
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window_draw(terminal->window);
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terminal_draw_contents(terminal);
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window_commit(terminal->window, 0);
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}
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static void
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redraw_handler(struct window *window, void *data)
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{
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struct terminal *terminal = data;
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terminal_draw(terminal);
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}
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#define STATE_NORMAL 0
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#define STATE_ESCAPE 1
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static void
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terminal_data(struct terminal *terminal, const char *data, size_t length);
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static void
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handle_escape(struct terminal *terminal)
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{
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char *row, *p;
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int i, count;
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int args[10], set[10] = { 0, };
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terminal->escape[terminal->escape_length++] = '\0';
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i = 0;
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p = &terminal->escape[2];
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while ((isdigit(*p) || *p == ';') && i < 10) {
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if (*p == ';') {
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p++;
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i++;
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} else {
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args[i] = strtol(p, &p, 10);
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set[i] = 1;
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}
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}
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switch (*p) {
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case 'A':
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count = set[0] ? args[0] : 1;
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if (terminal->row - count >= 0)
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terminal->row -= count;
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else
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terminal->row = 0;
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break;
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case 'B':
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count = set[0] ? args[0] : 1;
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if (terminal->row + count < terminal->height)
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terminal->row += count;
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else
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terminal->row = terminal->height;
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break;
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case 'C':
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count = set[0] ? args[0] : 1;
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if (terminal->column + count < terminal->width)
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terminal->column += count;
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else
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terminal->column = terminal->width;
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break;
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case 'D':
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count = set[0] ? args[0] : 1;
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if (terminal->column - count >= 0)
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terminal->column -= count;
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else
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terminal->column = 0;
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break;
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case 'J':
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row = terminal_get_row(terminal, terminal->row);
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memset(&row[terminal->column], 0, terminal->width - terminal->column);
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for (i = terminal->row + 1; i < terminal->height; i++)
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memset(terminal_get_row(terminal, i), 0, terminal->width);
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break;
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case 'G':
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if (set[0])
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terminal->column = args[0] - 1;
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break;
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case 'H':
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case 'f':
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terminal->row = set[0] ? args[0] - 1 : 0;
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terminal->column = set[1] ? args[1] - 1 : 0;
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break;
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case 'K':
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row = terminal_get_row(terminal, terminal->row);
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memset(&row[terminal->column], 0, terminal->width - terminal->column);
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break;
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case 'm':
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/* color, blink, bold etc*/
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break;
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case '?':
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if (strcmp(p, "?25l") == 0) {
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/* hide cursor */
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} else if (strcmp(p, "?25h") == 0) {
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/* show cursor */
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}
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break;
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default:
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terminal_data(terminal,
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terminal->escape + 1,
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terminal->escape_length - 2);
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break;
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}
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}
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static void
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terminal_data(struct terminal *terminal, const char *data, size_t length)
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{
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int i;
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char *row;
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for (i = 0; i < length; i++) {
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row = terminal_get_row(terminal, terminal->row);
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if (terminal->state == STATE_ESCAPE) {
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terminal->escape[terminal->escape_length++] = data[i];
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if (terminal->escape_length == 2 && data[i] != '[') {
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/* Bad escape sequence. */
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terminal->state = STATE_NORMAL;
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goto cancel_escape;
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}
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if (isalpha(data[i])) {
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terminal->state = STATE_NORMAL;
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handle_escape(terminal);
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}
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continue;
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}
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cancel_escape:
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switch (data[i]) {
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case '\r':
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terminal->column = 0;
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break;
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case '\n':
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terminal->column = 0;
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if (terminal->row + 1 < terminal->height) {
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terminal->row++;
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} else {
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terminal->start++;
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if (terminal->start == terminal->height)
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terminal->start = 0;
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memset(terminal_get_row(terminal, terminal->row),
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0, terminal->width);
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}
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break;
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case '\t':
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memset(&row[terminal->column], ' ', -terminal->column & 7);
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terminal->column = (terminal->column + 7) & ~7;
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break;
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case '\e':
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terminal->state = STATE_ESCAPE;
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terminal->escape[0] = '\e';
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terminal->escape_length = 1;
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break;
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case '\b':
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if (terminal->column > 0)
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terminal->column--;
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break;
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case '\a':
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/* Bell */
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break;
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default:
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if (terminal->column < terminal->width)
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row[terminal->column++] = data[i] < 32 ? data[i] + 64 : data[i];
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break;
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}
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}
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window_schedule_redraw(terminal->window);
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}
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static void
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key_handler(struct window *window, uint32_t key, uint32_t sym,
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uint32_t state, uint32_t modifiers, void *data)
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{
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struct terminal *terminal = data;
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char ch[2];
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int len = 0;
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switch (sym) {
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case XK_F11:
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if (!state)
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break;
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terminal->fullscreen ^= 1;
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window_set_fullscreen(window, terminal->fullscreen);
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window_schedule_redraw(terminal->window);
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break;
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case XK_Delete:
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sym = 0x04;
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case XK_BackSpace:
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case XK_Tab:
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case XK_Linefeed:
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case XK_Clear:
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case XK_Return:
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case XK_Pause:
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case XK_Scroll_Lock:
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case XK_Sys_Req:
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case XK_Escape:
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ch[len++] = sym & 0x7f;
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break;
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case XK_Shift_L:
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case XK_Shift_R:
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case XK_Control_L:
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case XK_Control_R:
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case XK_Alt_L:
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case XK_Alt_R:
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break;
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default:
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if (modifiers & WINDOW_MODIFIER_CONTROL)
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sym = sym & 0x1f;
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else if (modifiers & WINDOW_MODIFIER_ALT)
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ch[len++] = 0x1b;
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if (sym < 256)
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ch[len++] = sym;
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break;
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}
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if (state && len > 0)
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write(terminal->master, ch, len);
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}
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static void
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keyboard_focus_handler(struct window *window,
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struct wl_input_device *device, void *data)
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{
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struct terminal *terminal = data;
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terminal->focused = (device != NULL);
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window_schedule_redraw(terminal->window);
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}
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static struct terminal *
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terminal_create(struct display *display, int fullscreen)
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{
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struct terminal *terminal;
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cairo_surface_t *surface;
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cairo_t *cr;
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terminal = malloc(sizeof *terminal);
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if (terminal == NULL)
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return terminal;
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memset(terminal, 0, sizeof *terminal);
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terminal->fullscreen = fullscreen;
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terminal->color_scheme = &jbarnes_colors;
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terminal->window = window_create(display, "Wayland Terminal",
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500, 100, 500, 400);
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terminal->display = display;
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terminal->margin = 5;
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window_set_fullscreen(terminal->window, terminal->fullscreen);
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window_set_user_data(terminal->window, terminal);
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window_set_redraw_handler(terminal->window, redraw_handler);
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window_set_key_handler(terminal->window, key_handler);
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window_set_keyboard_focus_handler(terminal->window,
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keyboard_focus_handler);
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surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 0, 0);
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cr = cairo_create(surface);
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cairo_select_font_face (cr, "mono",
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CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size(cr, 14);
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cairo_font_extents(cr, &terminal->extents);
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cairo_destroy(cr);
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cairo_surface_destroy(surface);
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terminal_draw(terminal);
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return terminal;
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}
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static gboolean
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io_handler(GIOChannel *source,
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GIOCondition condition,
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gpointer data)
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{
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struct terminal *terminal = data;
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gchar buffer[256];
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gsize bytes_read;
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GError *error = NULL;
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g_io_channel_read_chars(source, buffer, sizeof buffer,
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&bytes_read, &error);
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terminal_data(terminal, buffer, bytes_read);
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return TRUE;
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}
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static int
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terminal_run(struct terminal *terminal, const char *path)
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{
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int master;
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pid_t pid;
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pid = forkpty(&master, NULL, NULL, NULL);
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if (pid == 0) {
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setenv("TERM", "vt100", 1);
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if (execl(path, path, NULL)) {
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printf("exec failed: %m\n");
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exit(EXIT_FAILURE);
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}
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} else if (pid < 0) {
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fprintf(stderr, "failed to fork and create pty (%m).\n");
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return -1;
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}
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terminal->master = master;
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terminal->channel = g_io_channel_unix_new(master);
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fcntl(master, F_SETFL, O_NONBLOCK);
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g_io_add_watch(terminal->channel, G_IO_IN,
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io_handler, terminal);
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return 0;
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}
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static const GOptionEntry option_entries[] = {
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{ "fullscreen", 'f', 0, G_OPTION_ARG_NONE,
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&option_fullscreen, "Run in fullscreen mode" },
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{ NULL }
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};
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int main(int argc, char *argv[])
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{
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struct display *d;
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struct terminal *terminal;
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d = display_create(&argc, &argv, option_entries);
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|
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terminal = terminal_create(d, option_fullscreen);
|
|
if (terminal_run(terminal, "/bin/bash"))
|
|
exit(EXIT_FAILURE);
|
|
|
|
display_run(d);
|
|
|
|
return 0;
|
|
}
|
|
|