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rofi/source/dialogs/window.c
Quentin Glidic 46dee2671d
x11-helper: Rename xcb.c 
Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
2017-06-01 00:12:58 +02:00

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/*
* rofi
*
* MIT/X11 License
* Copyright © 2013-2017 Qball Cow <qball@gmpclient.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#define G_LOG_DOMAIN "Dialogs.Window"
#include <config.h>
#ifdef WINDOW_MODE
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <strings.h>
#include <string.h>
#include <errno.h>
#include <xcb/xcb.h>
#include <xcb/xcb_ewmh.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_atom.h>
#include <glib.h>
#include "xcb-internal.h"
#include "xcb.h"
#include "rofi.h"
#include "settings.h"
#include "helper.h"
#include "widgets/textbox.h"
#include "dialogs/window.h"
#define WINLIST 32
#define CLIENTSTATE 10
#define CLIENTWINDOWTYPE 10
// a manageable window
typedef struct
{
xcb_window_t window;
xcb_get_window_attributes_reply_t xattr;
char *title;
char *class;
char *name;
char *role;
int states;
xcb_atom_t state[CLIENTSTATE];
int window_types;
xcb_atom_t window_type[CLIENTWINDOWTYPE];
int active;
int demands;
long hint_flags;
uint32_t wmdesktop;
char *wmdesktopstr;
cairo_surface_t *icon;
gboolean icon_checked;
} client;
// window lists
typedef struct
{
xcb_window_t *array;
client **data;
int len;
} winlist;
typedef struct
{
unsigned int id;
winlist *ids;
// Current window.
unsigned int index;
char *cache;
unsigned int wmdn_len;
unsigned int clf_len;
unsigned int name_len;
unsigned int title_len;
unsigned int role_len;
GRegex *window_regex;
} ModeModePrivateData;
winlist *cache_client = NULL;
/**
* Create a window list, pre-seeded with WINLIST entries.
*
* @returns A new window list.
*/
static winlist* winlist_new ()
{
winlist *l = g_malloc ( sizeof ( winlist ) );
l->len = 0;
l->array = g_malloc_n ( WINLIST + 1, sizeof ( xcb_window_t ) );
l->data = g_malloc_n ( WINLIST + 1, sizeof ( client* ) );
return l;
}
/**
* @param l The winlist.
* @param w The window to add.
* @param d Data pointer.
*
* Add one entry. If Full, extend with WINLIST entries.
*
* @returns 0 if failed, 1 is successful.
*/
static int winlist_append ( winlist *l, xcb_window_t w, client *d )
{
if ( l->len > 0 && !( l->len % WINLIST ) ) {
l->array = g_realloc ( l->array, sizeof ( xcb_window_t ) * ( l->len + WINLIST + 1 ) );
l->data = g_realloc ( l->data, sizeof ( client* ) * ( l->len + WINLIST + 1 ) );
}
// Make clang-check happy.
// TODO: make clang-check clear this should never be 0.
if ( l->data == NULL || l->array == NULL ) {
return 0;
}
l->data[l->len] = d;
l->array[l->len++] = w;
return l->len - 1;
}
static void winlist_empty ( winlist *l )
{
while ( l->len > 0 ) {
client *c = l->data[--l->len];
if ( c != NULL ) {
if ( c->icon ) {
cairo_surface_destroy ( c->icon );
}
g_free ( c->title );
g_free ( c->class );
g_free ( c->name );
g_free ( c->role );
g_free ( c->wmdesktopstr );
g_free ( c );
}
}
}
/**
* @param l The winlist entry
*
* Free the winlist.
*/
static void winlist_free ( winlist *l )
{
if ( l != NULL ) {
winlist_empty ( l );
g_free ( l->array );
g_free ( l->data );
g_free ( l );
}
}
/**
* @param l The winlist.
* @param w The window to find.
*
* Find the window in the list, and return the array entry.
*
* @returns -1 if failed, index is successful.
*/
static int winlist_find ( winlist *l, xcb_window_t w )
{
// iterate backwards. Theory is: windows most often accessed will be
// nearer the end. Testing with kcachegrind seems to support this...
int i;
for ( i = ( l->len - 1 ); i >= 0; i-- ) {
if ( l->array[i] == w ) {
return i;
}
}
return -1;
}
/**
* Create empty X11 cache for windows and windows attributes.
*/
static void x11_cache_create ( void )
{
if ( cache_client == NULL ) {
cache_client = winlist_new ();
}
}
/**
* Free the cache.
*/
static void x11_cache_free ( void )
{
winlist_free ( cache_client );
cache_client = NULL;
}
/**
* @param d Display connection to X server
* @param w window
*
* Get window attributes.
* This functions uses caching.
*
* @returns a XWindowAttributes
*/
static xcb_get_window_attributes_reply_t * window_get_attributes ( xcb_window_t w )
{
xcb_get_window_attributes_cookie_t c = xcb_get_window_attributes ( xcb->connection, w );
xcb_get_window_attributes_reply_t *r = xcb_get_window_attributes_reply ( xcb->connection, c, NULL );
if ( r ) {
return r;
}
return NULL;
}
// _NET_WM_STATE_*
static int client_has_state ( client *c, xcb_atom_t state )
{
for ( int i = 0; i < c->states; i++ ) {
if ( c->state[i] == state ) {
return 1;
}
}
return 0;
}
static int client_has_window_type ( client *c, xcb_atom_t type )
{
for ( int i = 0; i < c->window_types; i++ ) {
if ( c->window_type[i] == type ) {
return 1;
}
}
return 0;
}
static client* window_client ( ModeModePrivateData *pd, xcb_window_t win )
{
if ( win == XCB_WINDOW_NONE ) {
return NULL;
}
int idx = winlist_find ( cache_client, win );
if ( idx >= 0 ) {
return cache_client->data[idx];
}
// if this fails, we're up that creek
xcb_get_window_attributes_reply_t *attr = window_get_attributes ( win );
if ( !attr ) {
return NULL;
}
client *c = g_malloc0 ( sizeof ( client ) );
c->window = win;
// copy xattr so we don't have to care when stuff is freed
memmove ( &c->xattr, attr, sizeof ( xcb_get_window_attributes_reply_t ) );
xcb_get_property_cookie_t cky = xcb_ewmh_get_wm_state ( &xcb->ewmh, win );
xcb_ewmh_get_atoms_reply_t states;
if ( xcb_ewmh_get_wm_state_reply ( &xcb->ewmh, cky, &states, NULL ) ) {
c->states = MIN ( CLIENTSTATE, states.atoms_len );
memcpy ( c->state, states.atoms, MIN ( CLIENTSTATE, states.atoms_len ) * sizeof ( xcb_atom_t ) );
xcb_ewmh_get_atoms_reply_wipe ( &states );
}
cky = xcb_ewmh_get_wm_window_type ( &xcb->ewmh, win );
if ( xcb_ewmh_get_wm_window_type_reply ( &xcb->ewmh, cky, &states, NULL ) ) {
c->window_types = MIN ( CLIENTWINDOWTYPE, states.atoms_len );
memcpy ( c->window_type, states.atoms, MIN ( CLIENTWINDOWTYPE, states.atoms_len ) * sizeof ( xcb_atom_t ) );
xcb_ewmh_get_atoms_reply_wipe ( &states );
}
c->title = window_get_text_prop ( c->window, xcb->ewmh._NET_WM_NAME );
if ( c->title == NULL ) {
c->title = window_get_text_prop ( c->window, XCB_ATOM_WM_NAME );
}
pd->title_len = MAX ( c->title ? g_utf8_strlen ( c->title, -1 ) : 0, pd->title_len );
c->role = window_get_text_prop ( c->window, netatoms[WM_WINDOW_ROLE] );
pd->role_len = MAX ( c->role ? g_utf8_strlen ( c->role, -1 ) : 0, pd->role_len );
cky = xcb_icccm_get_wm_class ( xcb->connection, c->window );
xcb_icccm_get_wm_class_reply_t wcr;
if ( xcb_icccm_get_wm_class_reply ( xcb->connection, cky, &wcr, NULL ) ) {
c->class = rofi_latin_to_utf8_strdup ( wcr.class_name, -1 );
c->name = rofi_latin_to_utf8_strdup ( wcr.instance_name, -1 );
pd->name_len = MAX ( c->name ? g_utf8_strlen ( c->name, -1 ) : 0, pd->name_len );
xcb_icccm_get_wm_class_reply_wipe ( &wcr );
}
xcb_get_property_cookie_t cc = xcb_icccm_get_wm_hints ( xcb->connection, c->window );
xcb_icccm_wm_hints_t r;
if ( xcb_icccm_get_wm_hints_reply ( xcb->connection, cc, &r, NULL ) ) {
c->hint_flags = r.flags;
}
winlist_append ( cache_client, c->window, c );
g_free ( attr );
return c;
}
static int window_match ( const Mode *sw, GRegex **tokens, unsigned int index )
{
ModeModePrivateData *rmpd = (ModeModePrivateData *) mode_get_private_data ( sw );
int match = 1;
const winlist *ids = ( winlist * ) rmpd->ids;
// Want to pull directly out of cache, X calls are not thread safe.
int idx = winlist_find ( cache_client, ids->array[index] );
g_assert ( idx >= 0 );
client *c = cache_client->data[idx];
if ( tokens ) {
for ( int j = 0; match && tokens != NULL && tokens[j] != NULL; j++ ) {
int test = 0;
// Dirty hack. Normally helper_token_match does _all_ the matching,
// Now we want it to match only one item at the time.
// If hack not in place it would not match queries spanning multiple fields.
// e.g. when searching 'title element' and 'class element'
GRegex *ftokens[2] = { tokens[j], NULL };
if ( c->title != NULL && c->title[0] != '\0' ) {
test = helper_token_match ( ftokens, c->title );
}
if ( !test && c->class != NULL && c->class[0] != '\0' ) {
test = helper_token_match ( ftokens, c->class );
}
if ( !test && c->role != NULL && c->role[0] != '\0' ) {
test = helper_token_match ( ftokens, c->role );
}
if ( !test && c->name != NULL && c->name[0] != '\0' ) {
test = helper_token_match ( ftokens, c->name );
}
if ( !test && c->wmdesktopstr != NULL && c->wmdesktopstr[0] != '\0' ) {
test = helper_token_match ( ftokens, c->wmdesktopstr );
}
if ( test == 0 ) {
match = 0;
}
}
}
return match;
}
static unsigned int window_mode_get_num_entries ( const Mode *sw )
{
const ModeModePrivateData *pd = (const ModeModePrivateData *) mode_get_private_data ( sw );
return pd->ids ? pd->ids->len : 0;
}
/**
* Small helper function to find the right entry in the ewmh reply.
* Is there a call for this?
*/
static const char * _window_name_list_entry ( const char *str, uint32_t length, int entry )
{
uint32_t offset = 0;
int index = 0;
while ( index < entry && offset < length ) {
if ( str[offset] == 0 ) {
index++;
}
offset++;
}
return &str[offset];
}
static void _window_mode_load_data ( Mode *sw, unsigned int cd )
{
ModeModePrivateData *pd = (ModeModePrivateData *) mode_get_private_data ( sw );
// find window list
int nwins = 0;
xcb_window_t wins[100];
xcb_window_t curr_win_id;
// Create cache
x11_cache_create ();
xcb_get_property_cookie_t c = xcb_ewmh_get_active_window ( &( xcb->ewmh ), xcb->screen_nbr );
if ( !xcb_ewmh_get_active_window_reply ( &xcb->ewmh, c, &curr_win_id, NULL ) ) {
curr_win_id = 0;
}
// Get the current desktop.
unsigned int current_desktop = 0;
c = xcb_ewmh_get_current_desktop ( &xcb->ewmh, xcb->screen_nbr );
if ( !xcb_ewmh_get_current_desktop_reply ( &xcb->ewmh, c, &current_desktop, NULL ) ) {
current_desktop = 0;
}
c = xcb_ewmh_get_client_list_stacking ( &xcb->ewmh, 0 );
xcb_ewmh_get_windows_reply_t clients;
if ( xcb_ewmh_get_client_list_stacking_reply ( &xcb->ewmh, c, &clients, NULL ) ) {
nwins = MIN ( 100, clients.windows_len );
memcpy ( wins, clients.windows, nwins * sizeof ( xcb_window_t ) );
xcb_ewmh_get_windows_reply_wipe ( &clients );
}
else {
c = xcb_ewmh_get_client_list ( &xcb->ewmh, xcb->screen_nbr );
if ( xcb_ewmh_get_client_list_reply ( &xcb->ewmh, c, &clients, NULL ) ) {
nwins = MIN ( 100, clients.windows_len );
memcpy ( wins, clients.windows, nwins * sizeof ( xcb_window_t ) );
xcb_ewmh_get_windows_reply_wipe ( &clients );
}
}
if ( nwins > 0 ) {
int i;
// windows we actually display. May be slightly different to _NET_CLIENT_LIST_STACKING
// if we happen to have a window destroyed while we're working...
pd->ids = winlist_new ();
xcb_get_property_cookie_t c = xcb_ewmh_get_desktop_names ( &xcb->ewmh, xcb->screen_nbr );
xcb_ewmh_get_utf8_strings_reply_t names;
int has_names = FALSE;
if ( xcb_ewmh_get_desktop_names_reply ( &xcb->ewmh, c, &names, NULL ) ) {
has_names = TRUE;
}
// calc widths of fields
for ( i = nwins - 1; i > -1; i-- ) {
client *c = window_client ( pd, wins[i] );
if ( ( c != NULL )
&& !c->xattr.override_redirect
&& !client_has_window_type ( c, xcb->ewmh._NET_WM_WINDOW_TYPE_DOCK )
&& !client_has_window_type ( c, xcb->ewmh._NET_WM_WINDOW_TYPE_DESKTOP )
&& !client_has_state ( c, xcb->ewmh._NET_WM_STATE_SKIP_PAGER )
&& !client_has_state ( c, xcb->ewmh._NET_WM_STATE_SKIP_TASKBAR ) ) {
pd->clf_len = MAX ( pd->clf_len, ( c->class != NULL ) ? ( g_utf8_strlen ( c->class, -1 ) ) : 0 );
if ( client_has_state ( c, xcb->ewmh._NET_WM_STATE_DEMANDS_ATTENTION ) ) {
c->demands = TRUE;
}
if ( ( c->hint_flags & XCB_ICCCM_WM_HINT_X_URGENCY ) != 0 ) {
c->demands = TRUE;
}
if ( c->window == curr_win_id ) {
c->active = TRUE;
}
// find client's desktop.
xcb_get_property_cookie_t cookie;
xcb_get_property_reply_t *r;
c->wmdesktop = 0xFFFFFFFF;
cookie =
xcb_get_property ( xcb->connection, 0, c->window, xcb->ewmh._NET_WM_DESKTOP, XCB_ATOM_CARDINAL, 0,
1 );
r = xcb_get_property_reply ( xcb->connection, cookie, NULL );
if ( r ) {
if ( r->type == XCB_ATOM_CARDINAL ) {
c->wmdesktop = *( (uint32_t *) xcb_get_property_value ( r ) );
}
free ( r );
}
if ( c->wmdesktop != 0xFFFFFFFF ) {
if ( has_names ) {
if ( current_window_manager == WM_I3 ) {
char *output = NULL;
if ( pango_parse_markup ( _window_name_list_entry ( names.strings, names.strings_len,
c->wmdesktop ), -1, 0, NULL, &output, NULL, NULL ) ) {
c->wmdesktopstr = output;
}
else {
c->wmdesktopstr = g_strdup ( "Invalid name" );
}
}
else {
c->wmdesktopstr = g_strdup ( _window_name_list_entry ( names.strings, names.strings_len, c->wmdesktop ) );
}
}
else {
c->wmdesktopstr = g_strdup_printf ( "%u", (uint32_t) c->wmdesktop );
}
}
else {
c->wmdesktopstr = g_strdup ( "" );
}
pd->wmdn_len = MAX ( pd->wmdn_len, g_utf8_strlen ( c->wmdesktopstr, -1 ) );
if ( cd && c->wmdesktop != current_desktop ) {
continue;
}
winlist_append ( pd->ids, c->window, NULL );
}
}
if ( has_names ) {
xcb_ewmh_get_utf8_strings_reply_wipe ( &names );
}
}
}
static int window_mode_init ( Mode *sw )
{
if ( mode_get_private_data ( sw ) == NULL ) {
ModeModePrivateData *pd = g_malloc0 ( sizeof ( *pd ) );
pd->window_regex = g_regex_new ( "{[-\\w]+(:-?[0-9]+)?}", 0, 0, NULL );
mode_set_private_data ( sw, (void *) pd );
_window_mode_load_data ( sw, FALSE );
}
return TRUE;
}
static int window_mode_init_cd ( Mode *sw )
{
if ( mode_get_private_data ( sw ) == NULL ) {
ModeModePrivateData *pd = g_malloc0 ( sizeof ( *pd ) );
pd->window_regex = g_regex_new ( "{[-\\w]+(:-?[0-9]+)?}", 0, 0, NULL );
mode_set_private_data ( sw, (void *) pd );
_window_mode_load_data ( sw, TRUE );
}
return TRUE;
}
static inline int act_on_window ( xcb_window_t window )
{
int retv = TRUE;
char **args = NULL;
int argc = 0;
char window_regex[100]; /* We are probably safe here */
g_snprintf ( window_regex, sizeof window_regex, "%d", window );
helper_parse_setup ( config.window_command, &args, &argc, "{window}", window_regex, NULL );
GError *error = NULL;
g_spawn_async ( NULL, args, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error );
if ( error != NULL ) {
char *msg = g_strdup_printf ( "Failed to execute action for window: '%s'\nError: '%s'", window_regex, error->message );
rofi_view_error_dialog ( msg, FALSE );
g_free ( msg );
// print error.
g_error_free ( error );
retv = FALSE;
}
// Free the args list.
g_strfreev ( args );
return retv;
}
static ModeMode window_mode_result ( Mode *sw, int mretv, G_GNUC_UNUSED char **input,
unsigned int selected_line )
{
ModeModePrivateData *rmpd = (ModeModePrivateData *) mode_get_private_data ( sw );
ModeMode retv = MODE_EXIT;
if ( mretv & MENU_NEXT ) {
retv = NEXT_DIALOG;
}
else if ( mretv & MENU_PREVIOUS ) {
retv = PREVIOUS_DIALOG;
}
else if ( ( mretv & MENU_QUICK_SWITCH ) == MENU_QUICK_SWITCH ) {
retv = ( mretv & MENU_LOWER_MASK );
}
else if ( ( mretv & ( MENU_OK ) ) ) {
if ( mretv & MENU_CUSTOM_ACTION ) {
act_on_window ( rmpd->ids->array[selected_line] );
}
else {
rofi_view_hide ();
if ( ( current_window_manager & ( WM_AWESOME | WM_OPENBOX ) ) != 0 ) {
// Get the desktop of the client to switch to
uint32_t wmdesktop = 0;
xcb_get_property_cookie_t cookie;
xcb_get_property_reply_t *r;
// Get the current desktop.
unsigned int current_desktop = 0;
xcb_get_property_cookie_t c = xcb_ewmh_get_current_desktop ( &xcb->ewmh, xcb->screen_nbr );
if ( !xcb_ewmh_get_current_desktop_reply ( &xcb->ewmh, c, &current_desktop, NULL ) ) {
current_desktop = 0;
}
cookie = xcb_get_property ( xcb->connection, 0, rmpd->ids->array[selected_line],
xcb->ewmh._NET_WM_DESKTOP, XCB_ATOM_CARDINAL, 0, 1 );
r = xcb_get_property_reply ( xcb->connection, cookie, NULL );
if ( r && r->type == XCB_ATOM_CARDINAL ) {
wmdesktop = *( (uint32_t *) xcb_get_property_value ( r ) );
}
if ( r && r->type != XCB_ATOM_CARDINAL ) {
// Assume the client is on all desktops.
wmdesktop = current_desktop;
}
free ( r );
// If we have to switch the desktop, do
if ( wmdesktop != current_desktop ) {
xcb_ewmh_request_change_current_desktop ( &xcb->ewmh,
xcb->screen_nbr, wmdesktop, XCB_CURRENT_TIME );
}
}
// Activate the window
xcb_ewmh_request_change_active_window ( &xcb->ewmh, xcb->screen_nbr, rmpd->ids->array[selected_line],
XCB_EWMH_CLIENT_SOURCE_TYPE_OTHER,
XCB_CURRENT_TIME, rofi_view_get_window () );
xcb_flush ( xcb->connection );
}
}
else if ( ( mretv & ( MENU_ENTRY_DELETE ) ) == MENU_ENTRY_DELETE ) {
xcb_ewmh_request_close_window ( &( xcb->ewmh ), xcb->screen_nbr, rmpd->ids->array[selected_line], XCB_CURRENT_TIME, XCB_EWMH_CLIENT_SOURCE_TYPE_OTHER );
xcb_flush ( xcb->connection );
}
return retv;
}
static void window_mode_destroy ( Mode *sw )
{
ModeModePrivateData *rmpd = (ModeModePrivateData *) mode_get_private_data ( sw );
if ( rmpd != NULL ) {
winlist_free ( rmpd->ids );
x11_cache_free ();
g_free ( rmpd->cache );
g_regex_unref ( rmpd->window_regex );
g_free ( rmpd );
mode_set_private_data ( sw, NULL );
}
}
struct arg
{
const ModeModePrivateData *pd;
client *c;
};
static void helper_eval_add_str ( GString *str, const char *input, int l, int max_len )
{
// g_utf8 does not work with NULL string.
const char *input_nn = input ? input : "";
// Both l and max_len are in characters, not bytes.
int nc = g_utf8_strlen ( input_nn, -1 );
int spaces = 0;
if ( l == 0 ) {
spaces = MAX ( 0, max_len - nc );
g_string_append ( str, input_nn );
}
else {
if ( nc > l ) {
int bl = g_utf8_offset_to_pointer ( input_nn, l ) - input_nn;
g_string_append_len ( str, input_nn, bl );
}
else {
spaces = l - nc;
g_string_append ( str, input_nn );
}
}
while ( spaces-- ) {
g_string_append_c ( str, ' ' );
}
}
static gboolean helper_eval_cb ( const GMatchInfo *info, GString *str, gpointer data )
{
struct arg *d = (struct arg *) data;
gchar *match;
// Get the match
match = g_match_info_fetch ( info, 0 );
if ( match != NULL ) {
int l = 0;
if ( match[2] == ':' ) {
l = (int) g_ascii_strtoll ( &match[3], NULL, 10 );
if ( l < 0 && config.menu_width < 0 ) {
l = -config.menu_width + l;
}
if ( l < 0 ) {
l = 0;
}
}
if ( match[1] == 'w' ) {
helper_eval_add_str ( str, d->c->wmdesktopstr, l, d->pd->wmdn_len );
}
else if ( match[1] == 'c' ) {
helper_eval_add_str ( str, d->c->class, l, d->pd->clf_len );
}
else if ( match[1] == 't' ) {
helper_eval_add_str ( str, d->c->title, l, d->pd->title_len );
}
else if ( match[1] == 'n' ) {
helper_eval_add_str ( str, d->c->name, l, d->pd->name_len );
}
else if ( match[1] == 'r' ) {
helper_eval_add_str ( str, d->c->role, l, d->pd->role_len );
}
g_free ( match );
}
return FALSE;
}
static char * _generate_display_string ( const ModeModePrivateData *pd, client *c )
{
struct arg d = { pd, c };
char *res = g_regex_replace_eval ( pd->window_regex, config.window_format, -1, 0, 0,
helper_eval_cb, &d, NULL );
return g_strchomp ( res );
}
static char *_get_display_value ( const Mode *sw, unsigned int selected_line, int *state, G_GNUC_UNUSED GList **list, int get_entry )
{
ModeModePrivateData *rmpd = mode_get_private_data ( sw );
client *c = window_client ( rmpd, rmpd->ids->array[selected_line] );
if ( c == NULL ) {
return get_entry ? g_strdup ( "Window has fanished" ) : NULL;
}
if ( c->demands ) {
*state |= URGENT;
}
if ( c->active ) {
*state |= ACTIVE;
}
return get_entry ? _generate_display_string ( rmpd, c ) : NULL;
}
/**
* Icon code borrowed from https://github.com/olejorgenb/extract-window-icon
*/
static cairo_user_data_key_t data_key;
/** Create a surface object from this image data.
* \param width The width of the image.
* \param height The height of the image
* \param data The image's data in ARGB format, will be copied by this function.
*/
static cairo_surface_t * draw_surface_from_data ( int width, int height, uint32_t *data )
{
unsigned long int len = width * height;
unsigned long int i;
uint32_t *buffer = g_new0 ( uint32_t, len );
cairo_surface_t *surface;
/* Cairo wants premultiplied alpha, meh :( */
for ( i = 0; i < len; i++ ) {
uint8_t a = ( data[i] >> 24 ) & 0xff;
double alpha = a / 255.0;
uint8_t r = ( ( data[i] >> 16 ) & 0xff ) * alpha;
uint8_t g = ( ( data[i] >> 8 ) & 0xff ) * alpha;
uint8_t b = ( ( data[i] >> 0 ) & 0xff ) * alpha;
buffer[i] = ( a << 24 ) | ( r << 16 ) | ( g << 8 ) | b;
}
surface = cairo_image_surface_create_for_data ( (unsigned char *) buffer,
CAIRO_FORMAT_ARGB32,
width,
height,
width * 4 );
/* This makes sure that buffer will be freed */
cairo_surface_set_user_data ( surface, &data_key, buffer, g_free );
return surface;
}
static cairo_surface_t * ewmh_window_icon_from_reply ( xcb_get_property_reply_t *r, uint32_t preferred_size )
{
uint32_t *data, *end, *found_data = 0;
uint32_t found_size = 0;
if ( !r || r->type != XCB_ATOM_CARDINAL || r->format != 32 || r->length < 2 ) {
return 0;
}
data = (uint32_t *) xcb_get_property_value ( r );
if ( !data ) {
return 0;
}
end = data + r->length;
/* Goes over the icon data and picks the icon that best matches the size preference.
* In case the size match is not exact, picks the closest bigger size if present,
* closest smaller size otherwise.
*/
while ( data + 1 < end ) {
/* check whether the data size specified by width and height fits into the array we got */
uint64_t data_size = (uint64_t) data[0] * data[1];
if ( data_size > (uint64_t) ( end - data - 2 ) ) {
break;
}
/* use the greater of the two dimensions to match against the preferred size */
uint32_t size = MAX ( data[0], data[1] );
/* pick the icon if it's a better match than the one we already have */
gboolean found_icon_too_small = found_size < preferred_size;
gboolean found_icon_too_large = found_size > preferred_size;
gboolean icon_empty = data[0] == 0 || data[1] == 0;
gboolean better_because_bigger = found_icon_too_small && size > found_size;
gboolean better_because_smaller = found_icon_too_large &&
size >= preferred_size && size < found_size;
if ( !icon_empty && ( better_because_bigger || better_because_smaller || found_size == 0 ) ) {
found_data = data;
found_size = size;
}
data += data_size + 2;
}
if ( !found_data ) {
return 0;
}
return draw_surface_from_data ( found_data[0], found_data[1], found_data + 2 );
}
/** Get NET_WM_ICON. */
static cairo_surface_t * get_net_wm_icon ( xcb_window_t xid, uint32_t preferred_size )
{
xcb_get_property_cookie_t cookie = xcb_get_property_unchecked (
xcb->connection, FALSE, xid,
xcb->ewmh._NET_WM_ICON, XCB_ATOM_CARDINAL, 0, UINT32_MAX );
xcb_get_property_reply_t *r = xcb_get_property_reply ( xcb->connection, cookie, NULL );
cairo_surface_t *surface = ewmh_window_icon_from_reply ( r, preferred_size );
free ( r );
return surface;
}
static cairo_surface_t *_get_icon ( const Mode *sw, unsigned int selected_line, int size )
{
ModeModePrivateData *rmpd = mode_get_private_data ( sw );
client *c = window_client ( rmpd, rmpd->ids->array[selected_line] );
if ( c->icon_checked == FALSE ) {
c->icon = get_net_wm_icon ( rmpd->ids->array[selected_line], size );
c->icon_checked = TRUE;
}
return c->icon;
}
#include "mode-private.h"
Mode window_mode =
{
.name = "window",
.cfg_name_key = "display-window",
._init = window_mode_init,
._get_num_entries = window_mode_get_num_entries,
._result = window_mode_result,
._destroy = window_mode_destroy,
._token_match = window_match,
._get_display_value = _get_display_value,
._get_icon = _get_icon,
._get_completion = NULL,
._preprocess_input = NULL,
.private_data = NULL,
.free = NULL
};
Mode window_mode_cd =
{
.name = "windowcd",
.cfg_name_key = "display-windowcd",
._init = window_mode_init_cd,
._get_num_entries = window_mode_get_num_entries,
._result = window_mode_result,
._destroy = window_mode_destroy,
._token_match = window_match,
._get_display_value = _get_display_value,
._get_icon = _get_icon,
._get_completion = NULL,
._preprocess_input = NULL,
.private_data = NULL,
.free = NULL
};
#endif // WINDOW_MODE
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