+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2014 David Herrmann <dh.herrmann@gmail.com>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <stdlib.h>
-#include "consoled.h"
-#include "list.h"
-#include "macro.h"
-#include "util.h"
-
-static int terminal_write_fn(term_screen *screen, void *userdata, const void *buf, size_t size) {
- Terminal *t = userdata;
- int r;
-
- if (t->pty) {
- r = pty_write(t->pty, buf, size);
- if (r < 0)
- return log_oom();
- }
-
- return 0;
-}
-
-static int terminal_pty_fn(Pty *pty, void *userdata, unsigned int event, const void *ptr, size_t size) {
- Terminal *t = userdata;
- int r;
-
- switch (event) {
- case PTY_CHILD:
- log_debug("PTY child exited");
- t->pty = pty_unref(t->pty);
- break;
- case PTY_DATA:
- r = term_screen_feed_text(t->screen, ptr, size);
- if (r < 0)
- log_error_errno(r, "Cannot update screen state: %m");
-
- workspace_dirty(t->workspace);
- break;
- }
-
- return 0;
-}
-
-int terminal_new(Terminal **out, Workspace *w) {
- _cleanup_(terminal_freep) Terminal *t = NULL;
- int r;
-
- assert(w);
-
- t = new0(Terminal, 1);
- if (!t)
- return -ENOMEM;
-
- t->workspace = w;
- LIST_PREPEND(terminals_by_workspace, w->terminal_list, t);
-
- r = term_parser_new(&t->parser, true);
- if (r < 0)
- return r;
-
- r = term_screen_new(&t->screen, terminal_write_fn, t, NULL, NULL);
- if (r < 0)
- return r;
-
- r = term_screen_set_answerback(t->screen, "systemd-console");
- if (r < 0)
- return r;
-
- if (out)
- *out = t;
- t = NULL;
- return 0;
-}
-
-Terminal *terminal_free(Terminal *t) {
- if (!t)
- return NULL;
-
- assert(t->workspace);
-
- if (t->pty) {
- (void) pty_signal(t->pty, SIGHUP);
- pty_close(t->pty);
- pty_unref(t->pty);
- }
- term_screen_unref(t->screen);
- term_parser_free(t->parser);
- LIST_REMOVE(terminals_by_workspace, t->workspace->terminal_list, t);
- free(t);
-
- return NULL;
-}
-
-void terminal_resize(Terminal *t) {
- uint32_t width, height, fw, fh;
- int r;
-
- assert(t);
-
- width = t->workspace->width;
- height = t->workspace->height;
- fw = unifont_get_width(t->workspace->manager->uf);
- fh = unifont_get_height(t->workspace->manager->uf);
-
- width = (fw > 0) ? width / fw : 0;
- height = (fh > 0) ? height / fh : 0;
-
- if (t->pty) {
- r = pty_resize(t->pty, width, height);
- if (r < 0)
- log_error_errno(r, "Cannot resize pty: %m");
- }
-
- r = term_screen_resize(t->screen, width, height);
- if (r < 0)
- log_error_errno(r, "Cannot resize screen: %m");
-}
-
-void terminal_run(Terminal *t) {
- pid_t pid;
-
- assert(t);
-
- if (t->pty)
- return;
-
- pid = pty_fork(&t->pty,
- t->workspace->manager->event,
- terminal_pty_fn,
- t,
- term_screen_get_width(t->screen),
- term_screen_get_height(t->screen));
- if (pid < 0) {
- log_error_errno(pid, "Cannot fork PTY: %m");
- return;
- } else if (pid == 0) {
- /* child */
-
- char **argv = (char*[]){
- (char*)getenv("SHELL") ? : (char*)_PATH_BSHELL,
- NULL
- };
-
- setenv("TERM", "xterm-256color", 1);
- setenv("COLORTERM", "systemd-console", 1);
-
- execve(argv[0], argv, environ);
- log_error_errno(errno, "Cannot exec %s (%d): %m", argv[0], -errno);
- _exit(1);
- }
-}
-
-static void terminal_feed_keyboard(Terminal *t, idev_data *data) {
- idev_data_keyboard *kdata = &data->keyboard;
- int r;
-
- if (!data->resync && (kdata->value == 1 || kdata->value == 2)) {
- assert_cc(TERM_KBDMOD_CNT == (int)IDEV_KBDMOD_CNT);
- assert_cc(TERM_KBDMOD_IDX_SHIFT == (int)IDEV_KBDMOD_IDX_SHIFT &&
- TERM_KBDMOD_IDX_CTRL == (int)IDEV_KBDMOD_IDX_CTRL &&
- TERM_KBDMOD_IDX_ALT == (int)IDEV_KBDMOD_IDX_ALT &&
- TERM_KBDMOD_IDX_LINUX == (int)IDEV_KBDMOD_IDX_LINUX &&
- TERM_KBDMOD_IDX_CAPS == (int)IDEV_KBDMOD_IDX_CAPS);
-
- r = term_screen_feed_keyboard(t->screen,
- kdata->keysyms,
- kdata->n_syms,
- kdata->ascii,
- kdata->codepoints,
- kdata->mods);
- if (r < 0)
- log_error_errno(r, "Cannot feed keyboard data to screen: %m");
- }
-}
-
-void terminal_feed(Terminal *t, idev_data *data) {
- switch (data->type) {
- case IDEV_DATA_KEYBOARD:
- terminal_feed_keyboard(t, data);
- break;
- }
-}
-
-static void terminal_fill(uint8_t *dst,
- uint32_t width,
- uint32_t height,
- uint32_t stride,
- uint32_t value) {
- uint32_t i, j, *px;
-
- for (j = 0; j < height; ++j) {
- px = (uint32_t*)dst;
-
- for (i = 0; i < width; ++i)
- *px++ = value;
-
- dst += stride;
- }
-}
-
-static void terminal_blend(uint8_t *dst,
- uint32_t width,
- uint32_t height,
- uint32_t dst_stride,
- const uint8_t *src,
- uint32_t src_stride,
- uint32_t fg,
- uint32_t bg) {
- uint32_t i, j, *px;
-
- for (j = 0; j < height; ++j) {
- px = (uint32_t*)dst;
-
- for (i = 0; i < width; ++i) {
- if (!src || src[i / 8] & (1 << (7 - i % 8)))
- *px = fg;
- else
- *px = bg;
-
- ++px;
- }
-
- src += src_stride;
- dst += dst_stride;
- }
-}
-
-typedef struct {
- const grdev_display_target *target;
- unifont *uf;
- uint32_t cell_width;
- uint32_t cell_height;
- bool dirty;
-} TerminalDrawContext;
-
-static int terminal_draw_cell(term_screen *screen,
- void *userdata,
- unsigned int x,
- unsigned int y,
- const term_attr *attr,
- const uint32_t *ch,
- size_t n_ch,
- unsigned int ch_width) {
- TerminalDrawContext *ctx = userdata;
- const grdev_display_target *target = ctx->target;
- grdev_fb *fb = target->back;
- uint32_t xpos, ypos, width, height;
- uint32_t fg, bg;
- unifont_glyph g;
- uint8_t *dst;
- int r;
-
- if (n_ch > 0) {
- r = unifont_lookup(ctx->uf, &g, *ch);
- if (r < 0)
- r = unifont_lookup(ctx->uf, &g, 0xfffd);
- if (r < 0)
- unifont_fallback(&g);
- }
-
- xpos = x * ctx->cell_width;
- ypos = y * ctx->cell_height;
-
- if (xpos >= fb->width || ypos >= fb->height)
- return 0;
-
- width = MIN(fb->width - xpos, ctx->cell_width * ch_width);
- height = MIN(fb->height - ypos, ctx->cell_height);
-
- term_attr_to_argb32(attr, &fg, &bg, NULL);
-
- ctx->dirty = true;
-
- dst = fb->maps[0];
- dst += fb->strides[0] * ypos + sizeof(uint32_t) * xpos;
-
- if (n_ch < 1) {
- terminal_fill(dst,
- width,
- height,
- fb->strides[0],
- bg);
- } else {
- if (width > g.width)
- terminal_fill(dst + sizeof(uint32_t) * g.width,
- width - g.width,
- height,
- fb->strides[0],
- bg);
- if (height > g.height)
- terminal_fill(dst + fb->strides[0] * g.height,
- width,
- height - g.height,
- fb->strides[0],
- bg);
-
- terminal_blend(dst,
- width,
- height,
- fb->strides[0],
- g.data,
- g.stride,
- fg,
- bg);
- }
-
- return 0;
-}
-
-bool terminal_draw(Terminal *t, const grdev_display_target *target) {
- TerminalDrawContext ctx = { };
- uint64_t age;
-
- assert(t);
- assert(target);
-
- /* start up terminal on first frame */
- terminal_run(t);
-
- ctx.target = target;
- ctx.uf = t->workspace->manager->uf;
- ctx.cell_width = unifont_get_width(ctx.uf);
- ctx.cell_height = unifont_get_height(ctx.uf);
- ctx.dirty = false;
-
- if (target->front) {
- /* if the frontbuffer is new enough, no reason to redraw */
- age = term_screen_get_age(t->screen);
- if (age != 0 && age <= target->front->data.u64)
- return false;
- } else {
- /* force flip if no frontbuffer is set, yet */
- ctx.dirty = true;
- }
-
- term_screen_draw(t->screen, terminal_draw_cell, &ctx, &target->back->data.u64);
-
- return ctx.dirty;
-}
~ianmdlvl / elogind.git / blobdiff