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/*
* T.c
* T is a lean Terminal emulator.
*
* This file is part of T.
*
* T is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* T 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* T. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <unistd.h>
#include <vte/vte.h>
#include <stdlib.h>
#include "T.h"
static int window_count = 0;
/* Event callbacks */
static void window_destroy_callback(GtkWidget *widget, gpointer data);
static gboolean key_press_callback(GtkWidget *widget, GdkEvent *event, gpointer data);
static void terminal_child_exited_callback(VteTerminal *terminal, gpointer data);
static void terminal_window_title_changed_callback(VteTerminal *terminal, gpointer data);
/* Helper functions */
static void change_font_size(VteTerminal *terminal, int delta);
static void set_preferences(VteTerminal *terminal);
static void setup_terminal(GtkWindow *window, VteTerminal *terminal);
static void
window_destroy_callback(GtkWidget *widget, gpointer data)
{
/* Keeping track of the open windows */
window_count--;
}
static gboolean
key_press_callback(GtkWidget *widget, GdkEvent *event, gpointer data)
{
GdkEventKey *key_event = (GdkEventKey *) event;
VteTerminal *terminal = VTE_TERMINAL(widget);
gboolean has_shift = (key_event->state & GDK_SHIFT_MASK) != 0;
gboolean has_control = (key_event->state & GDK_CONTROL_MASK) != 0;
if (!has_control)
return FALSE;
switch (key_event->keyval) {
case GDK_KEY_minus:
change_font_size(terminal, -1);
return TRUE;
case GDK_KEY_plus:
change_font_size(terminal, 1);
return TRUE;
}
if (!has_shift)
return FALSE;
/* Handles ctrl + shift + {c,v,n} */
switch (key_event->keyval) {
case GDK_KEY_C:
case GDK_KEY_c:
/* turn this event into a Control+Insert and delegate it */
key_event->keyval = GDK_KEY_Insert;
key_event->state &= ~GDK_SHIFT_MASK;
break;
case GDK_KEY_V:
case GDK_KEY_v:
/* turn this event into a Shift+Insert and delegate it */
key_event->keyval = GDK_KEY_Insert;
key_event->state &= ~GDK_CONTROL_MASK;
break;
case GDK_KEY_N:
case GDK_KEY_n:
new_window();
return TRUE;
}
return FALSE;
}
static void
terminal_child_exited_callback(VteTerminal *terminal, gpointer data)
{
/* The forked process exited; issue destruction of the terminal window */
gtk_widget_destroy(GTK_WIDGET(GTK_WINDOW(data)));
}
static void
terminal_window_title_changed_callback(VteTerminal *terminal, gpointer data)
{
GtkWindow *window = GTK_WINDOW(data);
gtk_window_set_title(window, vte_terminal_get_window_title(terminal));
}
static void
change_font_size(VteTerminal *terminal, int delta)
{
PangoFontDescription *desc = (PangoFontDescription *) vte_terminal_get_font(terminal);
gint font_size = pango_font_description_get_size(desc) + delta * PANGO_SCALE;
pango_font_description_set_size(desc, font_size);
vte_terminal_set_font(terminal, desc);
}
static void
set_preferences(VteTerminal *terminal)
{
/*
* Options set here can (and should) be configured in config.h
*/
/*
* These are static because this function is called every time a new window
* is created and we don't want to parse the colors all over again
*/
static gboolean colors_parsed = FALSE;
static GdkColor palette[CONFIG_PALETTE_SIZE], bg_color, fg_color;
static const char *CONFIG_COLOR_PALETTE[CONFIG_PALETTE_SIZE] = {
CONFIG_PALLETE_0,
CONFIG_PALLETE_1,
CONFIG_PALLETE_2,
CONFIG_PALLETE_3,
CONFIG_PALLETE_4,
CONFIG_PALLETE_5,
CONFIG_PALLETE_6,
CONFIG_PALLETE_7,
CONFIG_PALLETE_8,
CONFIG_PALLETE_9,
CONFIG_PALLETE_10,
CONFIG_PALLETE_11,
CONFIG_PALLETE_12,
CONFIG_PALLETE_13,
CONFIG_PALLETE_14,
CONFIG_PALLETE_15,
};
if (!colors_parsed) {
int i;
gdk_color_parse(CONFIG_FOREGROUND_COLOR, &fg_color);
gdk_color_parse(CONFIG_BACKGROUND_COLOR, &bg_color);
for (i = 0; i < CONFIG_PALETTE_SIZE; ++i)
gdk_color_parse(CONFIG_COLOR_PALETTE[i], &palette[i]);
colors_parsed = TRUE;
}
/* Set preferences */
vte_terminal_set_audible_bell(terminal, CONFIG_AUDIBLE_BELL);
vte_terminal_set_colors(terminal, &fg_color, &bg_color, palette, CONFIG_PALETTE_SIZE);
vte_terminal_set_cursor_blink_mode(terminal, CONFIG_CURSOR_BLINK_MODE);
vte_terminal_set_font_from_string(terminal, CONFIG_FONT_NAME);
vte_terminal_set_mouse_autohide(terminal, CONFIG_MOUSE_AUTOHIDE);
vte_terminal_set_scrollback_lines(terminal, CONFIG_SCROLLBACK_LINES);
vte_terminal_set_visible_bell(terminal, CONFIG_VISIBLE_BELL);
}
static void
setup_terminal(GtkWindow *window, VteTerminal *terminal)
{
char *argv[] = { vte_get_user_shell(), NULL };
GPid child_pid;
vte_terminal_fork_command_full(terminal,
VTE_PTY_DEFAULT,
NULL, /* wd; NULL for cwd */
argv, /* the program to fork into and its args */
NULL, /* env vars */
G_SPAWN_DO_NOT_REAP_CHILD,
NULL, /* setup func */
NULL, /* custom data to setup func */
&child_pid,
NULL); /* TODO: error handling */
g_signal_connect(terminal, "child-exited", G_CALLBACK(terminal_child_exited_callback), window);
g_signal_connect(terminal, "key-press-event", G_CALLBACK(key_press_callback), window);
g_signal_connect(terminal, "window-title-changed", G_CALLBACK(terminal_window_title_changed_callback), window);
set_preferences(terminal);
}
int
num_open_windows()
{
return window_count;
}
void
new_window()
{
GtkWindow *window = (GtkWindow *) gtk_window_new(GTK_WINDOW_TOPLEVEL);
VteTerminal *terminal = (VteTerminal *) vte_terminal_new();
setup_terminal(window, terminal);
GdkGeometry hints;
hints.base_width = vte_terminal_get_char_width(terminal);
hints.base_height = vte_terminal_get_char_height(terminal);
hints.min_width = hints.base_width * CONFIG_MIN_WIDTH;
hints.min_height = hints.base_height * CONFIG_MIN_HEIGHT;
hints.width_inc = hints.base_width;
hints.height_inc = hints.base_height;
gtk_window_set_geometry_hints(window, GTK_WIDGET(terminal), &hints, GDK_HINT_RESIZE_INC | GDK_HINT_MIN_SIZE | GDK_HINT_BASE_SIZE);
gtk_window_set_icon_name(window, "utilities-terminal");
g_signal_connect(window, "delete-event", G_CALLBACK(gtk_false), NULL);
g_signal_connect(window, "destroy", G_CALLBACK(window_destroy_callback), NULL);
gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(terminal));
gtk_widget_show(GTK_WIDGET(terminal));
gtk_widget_show(GTK_WIDGET(window));
window_count++;
}
void
wrn(const char *message)
{
fprintf(stderr, "%s: %s\n", PROGRAM_NAME, message);
}
void
err(const char *message, int ecode)
{
wrn(message);
exit(ecode);
}
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