Desktop
/* $Id: layout.c,v 1.2 2011/03/27 18:34:27 khorben Exp $ */
/* Copyright (c) 2011 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Keyboard */
/* This program 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, version 3 of the License.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#define XK_LATIN1
#define XK_MISCELLANY
#include <X11/keysymdef.h>
#include <X11/extensions/XTest.h>
#include <gdk/gdkx.h>
#include "common.h"
#include "layout.h"
/* KeyboardLayout */
/* private */
/* types */
typedef struct _KeyboardKeyRow KeyboardKeyRow;
struct _KeyboardLayout
{
KeyboardKeyRow * rows;
size_t rows_cnt;
/* widgets */
GtkWidget * widget;
};
struct _KeyboardKeyRow
{
KeyboardKey ** keys;
size_t keys_cnt;
unsigned int width;
};
/* prototypes */
/* callbacks */
static void _on_key_clicked(GtkWidget * widget, gpointer data);
/* public */
/* functions */
KeyboardLayout * keyboard_layout_new(void)
{
KeyboardLayout * layout;
if((layout = malloc(sizeof(*layout))) == NULL)
return NULL;
layout->rows = NULL;
layout->rows_cnt = 0;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() gtk_table_new(%u, %u)\n", __func__, 1, 1);
#endif
layout->widget = gtk_table_new(1, 1, TRUE);
return layout;
}
/* keyboard_layout_get_widget */
GtkWidget * keyboard_layout_get_widget(KeyboardLayout * layout)
{
return layout->widget;
}
/* useful */
/* keyboard_layout_add */
KeyboardKey * keyboard_layout_add(KeyboardLayout * layout, unsigned int row,
unsigned int width, unsigned int keysym, char const * label)
{
KeyboardKey * ret = NULL;
KeyboardKeyRow * p = &layout->rows[row];
KeyboardKey ** q;
GtkAttachOptions options = GTK_EXPAND | GTK_SHRINK | GTK_FILL;
GtkWidget * widget;
if(row >= layout->rows_cnt)
{
if((p = realloc(layout->rows, sizeof(*p) * (row + 1))) == NULL)
return NULL;
layout->rows = p;
for(; layout->rows_cnt <= row; layout->rows_cnt++)
{
layout->rows[layout->rows_cnt].keys = NULL;
layout->rows[layout->rows_cnt].keys_cnt = 0;
layout->rows[layout->rows_cnt].width = 0;
}
p = &layout->rows[row];
}
if((q = realloc(p->keys, sizeof(*q) * (p->keys_cnt + 1))) == NULL)
return NULL;
p->keys = q;
q = &p->keys[p->keys_cnt];
if(keysym != 0 && label != NULL)
{
if((ret = keyboard_key_new(keysym, label)) == NULL)
return NULL;
widget = keyboard_key_get_widget(ret);
g_object_set_data(G_OBJECT(widget), "key", ret);
g_signal_connect(G_OBJECT(widget), "clicked", G_CALLBACK(
_on_key_clicked), layout);
if(width == 0)
width = 1;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() gtk_table_resize(%u, %u)\n",
__func__, (unsigned)layout->rows_cnt,
(unsigned)p->width + width);
fprintf(stderr, "DEBUG: %s() %s(%u, %u, %u, %u)\n", __func__,
"gtk_table_attach", p->width, p->width + width,
row, row + 1);
#endif
gtk_table_resize(GTK_TABLE(layout->widget),
layout->rows_cnt, p->width + width);
gtk_table_attach(GTK_TABLE(layout->widget), widget, p->width,
p->width + width, row, row + 1, options,
options, 2, 2);
p->keys[p->keys_cnt++] = ret;
}
p->width+=width;
return ret;
}
/* keyboard_layout_add_widget */
void keyboard_layout_add_widget(KeyboardLayout * layout, unsigned int row,
unsigned int column, unsigned int width, GtkWidget * widget)
{
GtkAttachOptions options = GTK_EXPAND | GTK_SHRINK | GTK_FILL;
gtk_table_attach(GTK_TABLE(layout->widget), widget, column, width, row,
row + 1, options, options, 2, 2);
}
/* keyboard_layout_apply_modifier */
void keyboard_layout_apply_modifier(KeyboardLayout * layout,
unsigned int modifier)
{
size_t i;
size_t j;
for(i = 0; i < layout->rows_cnt; i++)
for(j = 0; j < layout->rows[i].keys_cnt; j++)
keyboard_key_apply_modifier(layout->rows[i].keys[j],
modifier);
}
/* private */
/* functions */
/* on_key_clicked */
static void _on_key_clicked(GtkWidget * widget, gpointer data)
{
KeyboardLayout * layout = data;
KeyboardKey * key;
Display * display;
unsigned int keysym;
unsigned int keycode;
gboolean active;
key = g_object_get_data(G_OBJECT(widget), "key");
keysym = keyboard_key_get_keysym(key);
display = gdk_x11_get_default_xdisplay();
if((keycode = XKeysymToKeycode(display, keysym)) == 0)
return;
XTestGrabControl(display, True);
if(keysym_is_modifier(keysym) != 0)
{
active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(
widget));
if(keysym != XK_Num_Lock) /* XXX ugly workaround */
XTestFakeKeyEvent(display, keycode, active ? True
: False, 0);
else
{
XTestFakeKeyEvent(display, keycode, True, 0);
XTestFakeKeyEvent(display, keycode, False, 0);
}
keyboard_layout_apply_modifier(layout, active ? keysym : 0);
}
else
{
XTestFakeKeyEvent(display, keycode, True, 0);
XTestFakeKeyEvent(display, keycode, False, 0);
}
XTestGrabControl(display, False);
}