ui: add user interface subsystem
The UI subsystem starts the terminals, switches between them and draws the screen. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann
parent
fded606baa
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168
src/ui.c
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168
src/ui.c
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/*
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* User Interface
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*
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* Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* User Interface
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* Implementation of the user interface.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "conf.h"
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#include "eloop.h"
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#include "font.h"
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#include "input.h"
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#include "log.h"
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#include "terminal.h"
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#include "ui.h"
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#include "unicode.h"
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#include "uterm.h"
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#define LOG_SUBSYSTEM "config"
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struct kmscon_ui {
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struct ev_eloop *eloop;
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struct uterm_video *video;
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struct kmscon_input *input;
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struct kmscon_symbol_table *st;
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struct kmscon_font_factory *ff;
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struct kmscon_terminal *term;
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};
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static void video_event(struct uterm_video *video,
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struct uterm_video_hotplug *ev,
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void *data)
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{
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struct kmscon_ui *ui = data;
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struct uterm_display *iter;
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int ret;
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kmscon_terminal_rm_all_outputs(ui->term);
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iter = uterm_video_get_displays(ui->video);
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for ( ; iter; iter = uterm_display_next(iter)) {
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if (uterm_display_get_state(iter) == UTERM_DISPLAY_INACTIVE) {
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ret = uterm_display_activate(iter, NULL);
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if (ret)
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continue;
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}
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kmscon_terminal_add_output(ui->term, iter);
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}
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}
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static void input_event(struct kmscon_input *input,
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struct kmscon_input_event *ev,
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void *data)
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{
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struct kmscon_ui *ui = data;
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int ret;
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ret = kmscon_terminal_input(ui->term, ev);
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if (ret) {
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kmscon_terminal_close(ui->term);
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ev_eloop_exit(ui->eloop);
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}
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}
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int kmscon_ui_new(struct kmscon_ui **out,
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struct ev_eloop *eloop,
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struct uterm_video *video,
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struct kmscon_input *input)
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{
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struct kmscon_ui *ui;
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int ret;
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if (!out || !eloop || !video || !input)
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return -EINVAL;
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ui = malloc(sizeof(*ui));
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if (!ui)
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return -ENOMEM;
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memset(ui, 0, sizeof(*ui));
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ui->eloop = eloop;
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ui->video = video;
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ui->input = input;
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ret = kmscon_symbol_table_new(&ui->st);
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if (ret)
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goto err_free;
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ret = kmscon_font_factory_new(&ui->ff, ui->st);
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if (ret)
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goto err_st;
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ret = kmscon_terminal_new(&ui->term, eloop, ui->ff, ui->video, ui->st);
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if (ret)
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goto err_ff;
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ret = uterm_video_register_cb(ui->video, video_event, ui);
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if (ret)
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goto err_term;
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ret = kmscon_input_register_cb(ui->input, input_event, ui);
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if (ret)
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goto err_video;
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ret = kmscon_terminal_open(ui->term, NULL, NULL);
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if (ret)
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goto err_input;
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ev_eloop_ref(ui->eloop);
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uterm_video_ref(ui->video);
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kmscon_input_ref(ui->input);
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*out = ui;
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return 0;
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err_input:
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kmscon_input_unregister_cb(ui->input, input_event);
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err_video:
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uterm_video_unregister_cb(ui->video, video_event);
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err_term:
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kmscon_terminal_unref(ui->term);
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err_ff:
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kmscon_font_factory_unref(ui->ff);
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err_st:
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kmscon_symbol_table_unref(ui->st);
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err_free:
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free(ui);
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return ret;
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}
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void kmscon_ui_free(struct kmscon_ui *ui)
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{
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if (!ui)
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return;
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kmscon_input_unregister_cb(ui->input, input_event);
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uterm_video_unregister_cb(ui->video, video_event);
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kmscon_terminal_unref(ui->term);
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kmscon_font_factory_unref(ui->ff);
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kmscon_symbol_table_unref(ui->st);
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kmscon_input_unref(ui->input);
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uterm_video_unref(ui->video);
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ev_eloop_unref(ui->eloop);
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free(ui);
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}
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49
src/ui.h
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49
src/ui.h
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@ -0,0 +1,49 @@
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/*
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* User Interface
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*
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* Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
|
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* User Interface
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* This is the main UI object that handles all currently opened terminals and
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* draws the screen.
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*/
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#ifndef KMSCON_UI_H
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#define KMSCON_UI_H
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#include <stdlib.h>
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#include <unistd.h>
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#include "eloop.h"
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#include "input.h"
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#include "uterm.h"
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struct kmscon_ui;
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int kmscon_ui_new(struct kmscon_ui **out,
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struct ev_eloop *eloop,
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struct uterm_video *video,
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struct kmscon_input *input);
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void kmscon_ui_free(struct kmscon_ui *ui);
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#endif /* KMSCON_UI_H */
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