termite/termite.c

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#define _POSIX_C_SOURCE 200809L
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#include <stdbool.h>
#include <string.h>
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#include <gtk/gtk.h>
#include <vte/vte.h>
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#ifndef __GNUC__
# define __attribute__(x)
#endif
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static const char * const url_regex = "(ftp|http)s?://[-a-zA-Z0-9.?$%&/=_~#.,:;+()]*";
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typedef enum overlay_mode {
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OVERLAY_HIDDEN = 0,
OVERLAY_SEARCH,
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OVERLAY_RSEARCH,
OVERLAY_COMPLETION
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} overlay_mode;
typedef struct search_panel_info {
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GtkWidget *vte;
GtkWidget *entry;
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GtkWidget *panel;
enum overlay_mode mode;
} search_panel_info;
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static char *browser_cmd[3] = {NULL};
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static void launch_browser(char *url);
static void window_title_cb(VteTerminal *vte, GtkWindow *window);
static gboolean key_press_cb(VteTerminal *vte, GdkEventKey *event, search_panel_info *info);
static gboolean entry_key_press_cb(GtkEntry *entry, GdkEventKey *event, search_panel_info *info);
static gboolean position_overlay_cb(GtkBin *overlay, GtkWidget *widget, GdkRectangle *alloc);
static gboolean button_press_cb(VteTerminal *vte, GdkEventButton *event);
static void beep_cb(GtkWindow *window);
static gboolean focus_cb(GtkWindow *window);
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static gboolean add_to_list_store(char *key, void *value, GtkListStore *store);
static GtkTreeModel *create_completion_model(VteTerminal *vte);
static void search(VteTerminal *vte, const char *pattern, bool reverse);
static void overlay_show(search_panel_info *info, overlay_mode mode, bool complete);
static void get_vte_padding(VteTerminal *vte, int *w, int *h);
static char *check_match(VteTerminal *vte, int event_x, int event_y);
static void load_config(GtkWindow *window, VteTerminal *vte,
gboolean *dynamic_title, gboolean *urgent_on_bell,
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gboolean *clickable_url, const char **term);
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void launch_browser(char *url) {
browser_cmd[1] = url;
g_spawn_async(NULL, browser_cmd, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, NULL);
}
/* {{{ CALLBACKS */
void window_title_cb(VteTerminal *vte, GtkWindow *window) {
const char *t = vte_terminal_get_window_title(vte);
gtk_window_set_title(window, t ? t : "termite");
}
gboolean key_press_cb(VteTerminal *vte, GdkEventKey *event, search_panel_info *info) {
const guint modifiers = event->state & gtk_accelerator_get_default_mod_mask();
gboolean dynamic_title = FALSE, urgent_on_bell = FALSE, clickable_url = FALSE;
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if (modifiers == (GDK_CONTROL_MASK|GDK_SHIFT_MASK)) {
switch (gdk_keyval_to_lower(event->keyval)) {
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case GDK_KEY_c:
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vte_terminal_copy_clipboard(vte);
return TRUE;
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case GDK_KEY_v:
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vte_terminal_paste_clipboard(vte);
return TRUE;
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case GDK_KEY_p:
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vte_terminal_search_find_previous(vte);
vte_terminal_copy_primary(vte);
return TRUE;
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case GDK_KEY_n:
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vte_terminal_search_find_next(vte);
vte_terminal_copy_primary(vte);
return TRUE;
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case GDK_KEY_f:
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overlay_show(info, OVERLAY_SEARCH, true);
return TRUE;
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case GDK_KEY_r:
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overlay_show(info, OVERLAY_RSEARCH, true);
return TRUE;
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case GDK_KEY_j:
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search(vte, url_regex, false);
return TRUE;
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case GDK_KEY_k:
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search(vte, url_regex, true);
return TRUE;
case GDK_KEY_Escape:
load_config(GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(vte))),
vte, &dynamic_title, &urgent_on_bell,
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&clickable_url, NULL);
return TRUE;
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}
} else if (modifiers == GDK_CONTROL_MASK && event->keyval == GDK_KEY_Tab) {
overlay_show(info, OVERLAY_COMPLETION, true);
return TRUE;
}
return FALSE;
}
gboolean entry_key_press_cb(GtkEntry *entry, GdkEventKey *event, search_panel_info *info) {
gboolean ret = FALSE;
if (event->keyval == GDK_KEY_Escape) {
ret = TRUE;
} else if (event->keyval == GDK_KEY_Return) {
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const char *text = gtk_entry_get_text(entry);
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switch (info->mode) {
case OVERLAY_SEARCH:
search(VTE_TERMINAL(info->vte), text, false);
break;
case OVERLAY_RSEARCH:
search(VTE_TERMINAL(info->vte), text, true);
break;
case OVERLAY_COMPLETION:
vte_terminal_feed_child(VTE_TERMINAL(info->vte), text, -1);
break;
case OVERLAY_HIDDEN:
break;
}
ret = TRUE;
}
if (ret) {
info->mode = OVERLAY_HIDDEN;
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gtk_widget_hide(info->panel);
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gtk_widget_grab_focus(info->vte);
}
return ret;
}
gboolean position_overlay_cb(GtkBin *overlay, GtkWidget *widget, GdkRectangle *alloc) {
GtkWidget *vte = gtk_bin_get_child(overlay);
int width = gtk_widget_get_allocated_width(vte);
int height = gtk_widget_get_allocated_height(vte);
GtkRequisition req;
gtk_widget_get_preferred_size(widget, NULL, &req);
alloc->x = width - req.width - 40;
alloc->y = 0;
alloc->width = MIN(width, req.width);
alloc->height = MIN(height, req.height);
return TRUE;
}
gboolean button_press_cb(VteTerminal *vte, GdkEventButton *event) {
char *match = check_match(vte, (int)event->x, (int)event->y);
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if (event->button == 1 && event->type == GDK_BUTTON_PRESS && match) {
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launch_browser(match);
g_free(match);
return TRUE;
}
return FALSE;
}
void beep_cb(GtkWindow *window) {
gtk_window_set_urgency_hint(window, TRUE);
}
gboolean focus_cb(GtkWindow *window) {
gtk_window_set_urgency_hint(window, FALSE);
return FALSE;
}
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/* }}} */
gboolean add_to_list_store(char *key,
__attribute__((unused)) void *value,
GtkListStore *store) {
GtkTreeIter iter;
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, key, -1);
return FALSE;
}
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GtkTreeModel *create_completion_model(VteTerminal *vte) {
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GtkListStore *store = gtk_list_store_new(1, G_TYPE_STRING);
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long end_row, end_col;
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vte_terminal_get_cursor_position(vte, &end_col, &end_row);
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char *content = vte_terminal_get_text_range(vte, 0, 0, end_row, end_col,
NULL, NULL, NULL);
if (!content) {
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g_printerr("no content returned for completion\n");
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return GTK_TREE_MODEL(store);
}
char *s_ptr = content, *saveptr;
GTree *tree = g_tree_new((GCompareFunc)strcmp);
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for (; ; s_ptr = NULL) {
char *token = strtok_r(s_ptr, " \n\t", &saveptr);
if (!token) {
break;
}
g_tree_insert(tree, token, NULL);
}
g_tree_foreach(tree, (GTraverseFunc)add_to_list_store, store);
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g_tree_destroy(tree);
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g_free(content);
return GTK_TREE_MODEL(store);
}
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void search(VteTerminal *vte, const char *pattern, bool reverse) {
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GRegex *regex = vte_terminal_search_get_gregex(vte);
if (regex) g_regex_unref(regex);
regex = g_regex_new(pattern, (GRegexCompileFlags)0, (GRegexMatchFlags)0, NULL);
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vte_terminal_search_set_gregex(vte, regex);
if (!reverse) {
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vte_terminal_search_find_next(vte);
} else {
vte_terminal_search_find_previous(vte);
}
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vte_terminal_copy_primary(vte);
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}
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void overlay_show(search_panel_info *info, overlay_mode mode, bool complete) {
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if (complete) {
GtkEntryCompletion *completion = gtk_entry_completion_new();
gtk_entry_set_completion(GTK_ENTRY(info->entry), completion);
g_object_unref(completion);
GtkTreeModel *completion_model = create_completion_model(VTE_TERMINAL(info->vte));
gtk_entry_completion_set_model(completion, completion_model);
g_object_unref(completion_model);
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gtk_entry_completion_set_inline_selection(completion, TRUE);
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gtk_entry_completion_set_text_column(completion, 0);
}
gtk_entry_set_text(GTK_ENTRY(info->entry), "");
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info->mode = mode;
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gtk_widget_show(info->panel);
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gtk_widget_grab_focus(info->entry);
}
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void get_vte_padding(VteTerminal *vte, int *w, int *h) {
GtkBorder *border = NULL;
gtk_widget_style_get(GTK_WIDGET(vte), "inner-border", &border, NULL);
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if (!border) {
g_warning("VTE's inner-border property unavailable");
*w = *h = 0;
} else {
*w = border->left + border->right;
*h = border->top + border->bottom;
gtk_border_free(border);
}
}
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char *check_match(VteTerminal *vte, int event_x, int event_y) {
int xpad, ypad, tag;
get_vte_padding(vte, &xpad, &ypad);
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return vte_terminal_match_check(vte,
(event_x - ypad) / vte_terminal_get_char_width(vte),
(event_y - ypad) / vte_terminal_get_char_height(vte),
&tag);
}
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/* {{{ CONFIG LOADING */
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#define MAKE_GET_CONFIG_FUNCTION(NAME, TYPE) \
static bool get_config_ ## NAME (GKeyFile *config, const char *group, const char *key, TYPE *value) { \
GError *error = NULL; \
*value = g_key_file_get_ ## NAME (config, group, key, &error); \
if (error) { \
g_error_free(error); \
return false; \
} \
return true; \
}
MAKE_GET_CONFIG_FUNCTION(boolean, gboolean)
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MAKE_GET_CONFIG_FUNCTION(integer, int)
MAKE_GET_CONFIG_FUNCTION(string, char *)
MAKE_GET_CONFIG_FUNCTION(double, double)
static bool get_config_color(GKeyFile *config, const char *key, GdkColor *color) {
char *cfgstr;
bool success = false;
if (get_config_string(config, "colors", key, &cfgstr)) {
if (gdk_color_parse(cfgstr, color)) {
success = true;
} else {
g_printerr("invalid color string: %s\n", cfgstr);
}
g_free(cfgstr);
}
return success;
}
static void load_config(GtkWindow *window, VteTerminal *vte,
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gboolean *dynamic_title, gboolean *urgent_on_bell,
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gboolean *clickable_url, const char **term) {
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static const char * const filename = "termite.cfg";
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const char *dir = g_get_user_config_dir();
char *path = g_build_filename(dir, filename, NULL);
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GKeyFile *config = g_key_file_new();
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if ((g_key_file_load_from_file(config, path, G_KEY_FILE_NONE, NULL) ||
g_key_file_load_from_dirs(config, filename, (const char **)g_get_system_config_dirs(),
NULL, G_KEY_FILE_NONE, NULL))) {
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gboolean cfgbool;
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double cfgdouble;
int cfgint;
char *cfgstr;
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if (term && get_config_string(config, "options", "term", &cfgstr)) {
*term = cfgstr;
}
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if (get_config_boolean(config, "options", "resize_grip", &cfgbool)) {
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gtk_window_set_has_resize_grip(window, cfgbool);
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}
if (get_config_boolean(config, "options", "scroll_on_output", &cfgbool)) {
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vte_terminal_set_scroll_on_output(vte, cfgbool);
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}
if (get_config_boolean(config, "options", "scroll_on_keystroke", &cfgbool)) {
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vte_terminal_set_scroll_on_keystroke(vte, cfgbool);
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}
if (get_config_boolean(config, "options", "audible_bell", &cfgbool)) {
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vte_terminal_set_audible_bell(vte, cfgbool);
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}
if (get_config_boolean(config, "options", "visible_bell", &cfgbool)) {
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vte_terminal_set_visible_bell(vte, cfgbool);
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}
if (get_config_boolean(config, "options", "mouse_autohide", &cfgbool)) {
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vte_terminal_set_mouse_autohide(vte, cfgbool);
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}
if (get_config_boolean(config, "options", "allow_bold", &cfgbool)) {
vte_terminal_set_allow_bold(vte, cfgbool);
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}
if (get_config_boolean(config, "options", "dynamic_title", &cfgbool)) {
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*dynamic_title = cfgbool;
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}
if (get_config_boolean(config, "options", "urgent_on_bell", &cfgbool)) {
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*urgent_on_bell = cfgbool;
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}
if (get_config_boolean(config, "options", "clickable_url", &cfgbool)) {
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*clickable_url = cfgbool;
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}
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g_free(browser_cmd[0]);
if (get_config_string(config, "options", "browser", &cfgstr)) {
browser_cmd[0] = cfgstr;
} else {
browser_cmd[0] = g_strdup(g_getenv("BROWSER"));
if (!browser_cmd[0]) *clickable_url = false;
}
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if (get_config_string(config, "options", "font", &cfgstr)) {
vte_terminal_set_font_from_string(vte, cfgstr);
g_free(cfgstr);
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}
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if (get_config_integer(config, "options", "scrollback_lines", &cfgint)) {
vte_terminal_set_scrollback_lines(vte, cfgint);
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}
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if (get_config_string(config, "options", "cursor_blink", &cfgstr)) {
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if (!g_ascii_strcasecmp(cfgstr, "system")) {
vte_terminal_set_cursor_blink_mode(vte, VTE_CURSOR_BLINK_SYSTEM);
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} else if (!g_ascii_strcasecmp(cfgstr, "on")) {
vte_terminal_set_cursor_blink_mode(vte, VTE_CURSOR_BLINK_ON);
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} else if (!g_ascii_strcasecmp(cfgstr, "off")) {
vte_terminal_set_cursor_blink_mode(vte, VTE_CURSOR_BLINK_OFF);
}
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g_free(cfgstr);
}
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if (get_config_string(config, "options", "cursor_shape", &cfgstr)) {
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if (!g_ascii_strcasecmp(cfgstr, "block")) {
vte_terminal_set_cursor_shape(vte, VTE_CURSOR_SHAPE_BLOCK);
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} else if (!g_ascii_strcasecmp(cfgstr, "ibeam")) {
vte_terminal_set_cursor_shape(vte, VTE_CURSOR_SHAPE_IBEAM);
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} else if (!g_ascii_strcasecmp(cfgstr, "underline")) {
vte_terminal_set_cursor_shape(vte, VTE_CURSOR_SHAPE_UNDERLINE);
}
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g_free(cfgstr);
}
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if (get_config_string(config, "options", "icon_name", &cfgstr)) {
gtk_window_set_icon_name(window, cfgstr);
g_free(cfgstr);
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}
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if (get_config_double(config, "options", "transparency", &cfgdouble)) {
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vte_terminal_set_background_saturation(vte, cfgdouble);
vte_terminal_set_opacity(vte, (guint16)(0xffff * (1 - cfgdouble)));
}
static const long palette_size = 255;
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GdkColor color, palette[palette_size];
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char color_key[] = "color000";
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bool success = true;
for (unsigned i = 0; success && i < palette_size; i++) {
snprintf(color_key, sizeof color_key, "color%u", i);
if (get_config_string(config, "colors", color_key, &cfgstr)) {
if (!gdk_color_parse(cfgstr, &palette[i])) {
g_printerr("invalid color string: %s\n", cfgstr);
success = false;
}
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} else {
if (i < 16) {
palette[i].blue = (i & 4) ? 0xc000 : 0;
palette[i].green = (i & 2) ? 0xc000 : 0;
palette[i].red = (i & 1) ? 0xc000 : 0;
if (i > 7) {
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palette[i].blue = (guint16)(palette[i].blue + 0x3fff);
palette[i].green = (guint16)(palette[i].green + 0x3fff);
palette[i].red = (guint16)(palette[i].red + 0x3fff);
}
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} else if (i < 232) {
unsigned j = i - 16;
unsigned r = j / 36, g = (j / 6) % 6, b = j % 6;
unsigned red = (r == 0) ? 0 : r * 40 + 55;
unsigned green = (g == 0) ? 0 : g * 40 + 55;
unsigned blue = (b == 0) ? 0 : b * 40 + 55;
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palette[i].red = (guint16)(red | red << 8);
palette[i].green = (guint16)(green | green << 8);
palette[i].blue = (guint16)(blue | blue << 8);
} else if (i < 256) {
unsigned shade = 8 + (i - 232) * 10;
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palette[i].red = palette[i].green = palette[i].blue = (guint16)(shade | shade << 8);
}
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}
}
if (success) {
vte_terminal_set_colors(vte, NULL, NULL, palette, palette_size);
}
if (get_config_color(config, "foreground", &color)) {
vte_terminal_set_color_foreground(vte, &color);
}
if (get_config_color(config, "foreground_bold", &color)) {
vte_terminal_set_color_bold(vte, &color);
}
if (get_config_color(config, "foreground_dim", &color)) {
vte_terminal_set_color_dim(vte, &color);
}
if (get_config_color(config, "background", &color)) {
vte_terminal_set_color_background(vte, &color);
}
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if (get_config_color(config, "cursor", &color)) {
vte_terminal_set_color_cursor(vte, &color);
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}
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}
g_free(path);
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g_key_file_free(config);
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}/*}}}*/
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int main(int argc, char **argv) {
GError *error = NULL;
const char *term = "termite";
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gboolean dynamic_title = FALSE, urgent_on_bell = FALSE, clickable_url = FALSE;
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gboolean version = FALSE;
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GOptionContext *context = g_option_context_new(NULL);
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char *role = NULL, *geometry = NULL, *execute = NULL;
const GOptionEntry entries[] = {
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{"role", 'r', 0, G_OPTION_ARG_STRING, &role, "The role to use", "ROLE"},
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{"geometry", 0, 0, G_OPTION_ARG_STRING, &geometry, "Window geometry", "GEOMETRY"},
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{"exec", 'e', 0, G_OPTION_ARG_STRING, &execute, "Command to execute", "COMMAND"},
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{"version", 'v', 0, G_OPTION_ARG_NONE, &version, "Version info", NULL},
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{NULL}
};
g_option_context_add_main_entries(context, entries, NULL);
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g_option_context_add_group(context, gtk_get_option_group(TRUE));
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if (!g_option_context_parse(context, &argc, &argv, &error)) {
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g_printerr("option parsing failed: %s\n", error->message);
return 1;
}
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if (version) {
g_print("termite %s\n", TERMITE_VERSION);
return 0;
}
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GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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GtkWidget *overlay = gtk_overlay_new();
GtkWidget *vte = vte_terminal_new();
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GdkScreen *screen = gtk_widget_get_screen(window);
GdkVisual *visual = gdk_screen_get_rgba_visual(screen);
if (!visual) {
visual = gdk_screen_get_system_visual(screen);
}
gtk_widget_set_visual(window, visual);
if (role) {
gtk_window_set_role(GTK_WINDOW(window), role);
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g_free(role);
}
char **command_argv;
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char fallback[] = "/bin/sh";
char *default_argv[2] = {fallback, NULL};
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if (execute) {
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int argcp;
char **argvp;
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g_shell_parse_argv(execute, &argcp, &argvp, &error);
if (error) {
g_printerr("Failed to parse command: %s\n", error->message);
return 1;
}
command_argv = argvp;
} else {
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char *shell = vte_get_user_shell();
if (shell) default_argv[0] = shell;
command_argv = default_argv;
}
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VtePty *pty = vte_terminal_pty_new(VTE_TERMINAL(vte), VTE_PTY_DEFAULT, &error);
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if (!pty) {
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g_printerr("Failed to create pty: %s\n", error->message);
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return 1;
}
load_config(GTK_WINDOW(window), VTE_TERMINAL(vte), &dynamic_title,
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&urgent_on_bell, &clickable_url, &term);
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vte_terminal_set_pty_object(VTE_TERMINAL(vte), pty);
vte_pty_set_term(pty, term);
GPid ppid;
if (g_spawn_async(NULL, command_argv, NULL,
(GSpawnFlags)(G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_SEARCH_PATH),
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(GSpawnChildSetupFunc)vte_pty_child_setup, pty,
&ppid, &error)) {
vte_terminal_watch_child(VTE_TERMINAL(vte), ppid);
} else {
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g_printerr("The new terminal's command failed to run: %s\n", error->message);
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return 1;
}
GtkWidget *alignment = gtk_alignment_new(0, 0, 1, 1);
gtk_alignment_set_padding(GTK_ALIGNMENT(alignment), 5, 5, 5, 5);
gtk_overlay_add_overlay(GTK_OVERLAY(overlay), alignment);
GtkWidget *entry = gtk_entry_new();
gtk_widget_set_halign(entry, GTK_ALIGN_START);
gtk_widget_set_valign(entry, GTK_ALIGN_END);
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gtk_container_add(GTK_CONTAINER(alignment), entry);
gtk_container_add(GTK_CONTAINER(overlay), vte);
gtk_container_add(GTK_CONTAINER(window), overlay);
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search_panel_info info = {vte, entry, alignment, OVERLAY_HIDDEN};
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(vte, "child-exited", G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(vte, "key-press-event", G_CALLBACK(key_press_cb), &info);
g_signal_connect(entry, "key-press-event", G_CALLBACK(entry_key_press_cb), &info);
g_signal_connect(overlay, "get-child-position", G_CALLBACK(position_overlay_cb), NULL);
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if (clickable_url) {
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int tag = vte_terminal_match_add_gregex(VTE_TERMINAL(vte),
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g_regex_new(url_regex,
G_REGEX_CASELESS,
G_REGEX_MATCH_NOTEMPTY,
NULL),
(GRegexMatchFlags)0);
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vte_terminal_match_set_cursor_type(VTE_TERMINAL(vte), tag, GDK_HAND2);
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g_signal_connect(vte, "button-press-event", G_CALLBACK(button_press_cb), NULL);
}
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if (urgent_on_bell) {
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g_signal_connect_swapped(vte, "beep", G_CALLBACK(beep_cb), window);
g_signal_connect(window, "focus-in-event", G_CALLBACK(focus_cb), NULL);
g_signal_connect(window, "focus-out-event", G_CALLBACK(focus_cb), NULL);
}
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if (dynamic_title) {
window_title_cb(VTE_TERMINAL(vte), GTK_WINDOW(window));
g_signal_connect(vte, "window-title-changed", G_CALLBACK(window_title_cb), window);
}
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if (geometry) {
gtk_widget_show_all(overlay);
gtk_widget_show_all(alignment);
if (!gtk_window_parse_geometry(GTK_WINDOW(window), geometry)) {
g_printerr("Invalid geometry string: %s\n", geometry);
}
g_free(geometry);
}
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gtk_widget_grab_focus(vte);
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gtk_widget_show_all(window);
gtk_widget_hide(alignment);
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gtk_main();
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return vte_terminal_get_child_exit_status(VTE_TERMINAL(vte));
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}
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// vim: et:sts=4:sw=4:cino=(0