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weston/clients/keyboard.c

934 lines
25 KiB

/*
* Copyright © 2012 Openismus GmbH
* Copyright © 2012 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include <cairo.h>
#include "window.h"
#include "input-method-client-protocol.h"
#include "text-client-protocol.h"
struct keyboard;
struct virtual_keyboard {
struct wl_input_panel *input_panel;
struct wl_input_method *input_method;
struct wl_input_method_context *context;
struct display *display;
struct output *output;
char *preedit_string;
uint32_t preedit_style;
struct {
xkb_mod_mask_t shift_mask;
} keysym;
uint32_t serial;
uint32_t content_hint;
uint32_t content_purpose;
char *preferred_language;
char *surrounding_text;
uint32_t surrounding_cursor;
struct keyboard *keyboard;
};
enum key_type {
keytype_default,
keytype_backspace,
keytype_enter,
keytype_space,
keytype_switch,
keytype_symbols,
keytype_tab,
keytype_arrow_up,
keytype_arrow_left,
keytype_arrow_right,
keytype_arrow_down,
keytype_style
};
struct key {
enum key_type key_type;
char *label;
char *alt;
unsigned int width;
};
struct layout {
const struct key *keys;
uint32_t count;
uint32_t columns;
uint32_t rows;
const char *language;
uint32_t text_direction;
};
static const struct key normal_keys[] = {
{ keytype_default, "q", "Q", 1},
{ keytype_default, "w", "W", 1},
{ keytype_default, "e", "E", 1},
{ keytype_default, "r", "R", 1},
{ keytype_default, "t", "T", 1},
{ keytype_default, "y", "Y", 1},
{ keytype_default, "u", "U", 1},
{ keytype_default, "i", "I", 1},
{ keytype_default, "o", "O", 1},
{ keytype_default, "p", "P", 1},
{ keytype_backspace, "<--", "<--", 2},
{ keytype_tab, "->|", "->|", 1},
{ keytype_default, "a", "A", 1},
{ keytype_default, "s", "S", 1},
{ keytype_default, "d", "D", 1},
{ keytype_default, "f", "F", 1},
{ keytype_default, "g", "G", 1},
{ keytype_default, "h", "H", 1},
{ keytype_default, "j", "J", 1},
{ keytype_default, "k", "K", 1},
{ keytype_default, "l", "L", 1},
{ keytype_enter, "Enter", "Enter", 2},
{ keytype_switch, "ABC", "abc", 2},
{ keytype_default, "z", "Z", 1},
{ keytype_default, "x", "X", 1},
{ keytype_default, "c", "C", 1},
{ keytype_default, "v", "V", 1},
{ keytype_default, "b", "B", 1},
{ keytype_default, "n", "N", 1},
{ keytype_default, "m", "M", 1},
{ keytype_default, ",", ",", 1},
{ keytype_default, ".", ".", 1},
{ keytype_switch, "ABC", "abc", 1},
{ keytype_symbols, "?123", "?123", 1},
{ keytype_space, "", "", 5},
{ keytype_arrow_up, "/\\", "/\\", 1},
{ keytype_arrow_left, "<", "<", 1},
{ keytype_arrow_right, ">", ">", 1},
{ keytype_arrow_down, "\\/", "\\/", 1},
{ keytype_style, "", "", 2}
};
static const struct key numeric_keys[] = {
{ keytype_default, "1", "1", 1},
{ keytype_default, "2", "2", 1},
{ keytype_default, "3", "3", 1},
{ keytype_default, "4", "4", 1},
{ keytype_default, "5", "5", 1},
{ keytype_default, "6", "6", 1},
{ keytype_default, "7", "7", 1},
{ keytype_default, "8", "8", 1},
{ keytype_default, "9", "9", 1},
{ keytype_default, "0", "0", 1},
{ keytype_backspace, "<--", "<--", 2},
{ keytype_space, "", "", 4},
{ keytype_enter, "Enter", "Enter", 2},
{ keytype_arrow_up, "/\\", "/\\", 1},
{ keytype_arrow_left, "<", "<", 1},
{ keytype_arrow_right, ">", ">", 1},
{ keytype_arrow_down, "\\/", "\\/", 1},
{ keytype_style, "", "", 2}
};
static const struct key arabic_keys[] = {
{ keytype_default, "ض", "ض", 1},
{ keytype_default, "ص", "ص", 1},
{ keytype_default, "ث", "ث", 1},
{ keytype_default, "ق", "ق", 1},
{ keytype_default, "ف", "ف", 1},
{ keytype_default, "غ", "إ", 1},
{ keytype_default, "ع", "ع", 1},
{ keytype_default, "ه", "ه", 1},
{ keytype_default, "خ", "خ", 1},
{ keytype_default, "ح", "ح", 1},
{ keytype_default, "ج", "ج", 1},
{ keytype_backspace, "-->", "-->", 2},
{ keytype_tab, "->|", "->|", 1},
{ keytype_default, "ش", "ش", 1},
{ keytype_default, "س", "س", 1},
{ keytype_default, "ي", "ي", 1},
{ keytype_default, "ب", "ب", 1},
{ keytype_default, "ل", "ل", 1},
{ keytype_default, "ا", "أ", 1},
{ keytype_default, "ت", "ت", 1},
{ keytype_default, "ن", "ن", 1},
{ keytype_default, "م", "م", 1},
{ keytype_default, "ك", "ك", 1},
{ keytype_default, "د", "د", 1},
{ keytype_enter, "Enter", "Enter", 2},
{ keytype_switch, "ABC", "abc", 2},
{ keytype_default, "ئ", "ئ", 1},
{ keytype_default, "ء", "ء", 1},
{ keytype_default, "ؤ", "ؤ", 1},
{ keytype_default, "ر", "ر", 1},
{ keytype_default, "ى", "آ", 1},
{ keytype_default, "ة", "ة", 1},
{ keytype_default, "و", "و", 1},
{ keytype_default, "ز", "ز", 1},
{ keytype_default, "ظ", "ظ", 1},
{ keytype_switch, "ABC", "abc", 2},
{ keytype_symbols, "؟٣٢١", "؟٣٢١", 1},
{ keytype_default, "ذ", "ذ", 1},
{ keytype_default, "،", "،", 1},
{ keytype_space, "", "", 6},
{ keytype_default, ".", ".", 1},
{ keytype_default, "ط", "ط", 1},
{ keytype_style, "", "", 2}
};
static const struct layout normal_layout = {
normal_keys,
sizeof(normal_keys) / sizeof(*normal_keys),
12,
4,
"en",
WL_TEXT_INPUT_TEXT_DIRECTION_LTR
};
static const struct layout numeric_layout = {
numeric_keys,
sizeof(numeric_keys) / sizeof(*numeric_keys),
12,
2,
"en",
WL_TEXT_INPUT_TEXT_DIRECTION_LTR
};
static const struct layout arabic_layout = {
arabic_keys,
sizeof(arabic_keys) / sizeof(*arabic_keys),
13,
4,
"ar",
WL_TEXT_INPUT_TEXT_DIRECTION_RTL
};
static const char *style_labels[] = {
"default",
"none",
"active",
"inactive",
"highlight",
"underline",
"selection",
"incorrect"
};
static const double key_width = 60;
static const double key_height = 50;
enum keyboard_state {
keyboardstate_default,
keyboardstate_uppercase
};
struct keyboard {
struct virtual_keyboard *keyboard;
struct window *window;
struct widget *widget;
enum keyboard_state state;
};
static const char *
label_from_key(struct keyboard *keyboard,
const struct key *key)
{
if (key->key_type == keytype_style)
return style_labels[keyboard->keyboard->preedit_style];
if (keyboard->state == keyboardstate_default)
return key->label;
else
return key->alt;
}
static void
draw_key(struct keyboard *keyboard,
const struct key *key,
cairo_t *cr,
unsigned int row,
unsigned int col)
{
const char *label;
cairo_text_extents_t extents;
cairo_save(cr);
cairo_rectangle(cr,
col * key_width, row * key_height,
key->width * key_width, key_height);
cairo_clip(cr);
/* Paint frame */
cairo_rectangle(cr,
col * key_width, row * key_height,
key->width * key_width, key_height);
cairo_set_line_width(cr, 3);
cairo_stroke(cr);
/* Paint text */
label = label_from_key(keyboard, key);
cairo_text_extents(cr, label, &extents);
cairo_translate(cr,
col * key_width,
row * key_height);
cairo_translate(cr,
(key->width * key_width - extents.width) / 2,
(key_height - extents.y_bearing) / 2);
cairo_show_text(cr, label);
cairo_restore(cr);
}
static const struct layout *
get_current_layout(struct virtual_keyboard *keyboard)
{
switch (keyboard->content_purpose) {
case WL_TEXT_INPUT_CONTENT_PURPOSE_DIGITS:
case WL_TEXT_INPUT_CONTENT_PURPOSE_NUMBER:
return &numeric_layout;
default:
if (keyboard->preferred_language &&
strcmp(keyboard->preferred_language, "ar") == 0)
return &arabic_layout;
else
return &normal_layout;
}
}
static void
redraw_handler(struct widget *widget, void *data)
{
struct keyboard *keyboard = data;
cairo_surface_t *surface;
struct rectangle allocation;
cairo_t *cr;
unsigned int i;
unsigned int row = 0, col = 0;
const struct layout *layout;
layout = get_current_layout(keyboard->keyboard);
surface = window_get_surface(keyboard->window);
widget_get_allocation(keyboard->widget, &allocation);
cr = cairo_create(surface);
cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height);
cairo_clip(cr);
cairo_select_font_face(cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cr, 16);
cairo_translate(cr, allocation.x, allocation.y);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 1, 1, 1, 0.75);
cairo_rectangle(cr, 0, 0, layout->columns * key_width, layout->rows * key_height);
cairo_paint(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
for (i = 0; i < layout->count; ++i) {
cairo_set_source_rgb(cr, 0, 0, 0);
draw_key(keyboard, &layout->keys[i], cr, row, col);
col += layout->keys[i].width;
if (col >= layout->columns) {
row += 1;
col = 0;
}
}
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
static void
resize_handler(struct widget *widget,
int32_t width, int32_t height, void *data)
{
/* struct keyboard *keyboard = data; */
}
static char *
insert_text(const char *text, uint32_t offset, const char *insert)
{
char *new_text = xmalloc(strlen(text) + strlen(insert) + 1);
strncat(new_text, text, offset);
new_text[offset] = '\0';
strcat(new_text, insert);
strcat(new_text, text + offset);
return new_text;
}
static void
virtual_keyboard_commit_preedit(struct virtual_keyboard *keyboard)
{
char *surrounding_text;
if (!keyboard->preedit_string ||
strlen(keyboard->preedit_string) == 0)
return;
wl_input_method_context_cursor_position(keyboard->context,
0, 0);
wl_input_method_context_commit_string(keyboard->context,
keyboard->serial,
keyboard->preedit_string);
if (keyboard->surrounding_text) {
surrounding_text = insert_text(keyboard->surrounding_text,
keyboard->surrounding_cursor,
keyboard->preedit_string);
free(keyboard->surrounding_text);
keyboard->surrounding_text = surrounding_text;
keyboard->surrounding_cursor += strlen(keyboard->preedit_string);
} else {
keyboard->surrounding_text = strdup(keyboard->preedit_string);
keyboard->surrounding_cursor = strlen(keyboard->preedit_string);
}
free(keyboard->preedit_string);
keyboard->preedit_string = strdup("");
}
static void
virtual_keyboard_send_preedit(struct virtual_keyboard *keyboard,
int32_t cursor)
{
uint32_t index = strlen(keyboard->preedit_string);
if (keyboard->preedit_style)
wl_input_method_context_preedit_styling(keyboard->context,
0,
strlen(keyboard->preedit_string),
keyboard->preedit_style);
if (cursor > 0)
index = cursor;
wl_input_method_context_preedit_cursor(keyboard->context,
index);
wl_input_method_context_preedit_string(keyboard->context,
keyboard->serial,
keyboard->preedit_string,
keyboard->preedit_string);
}
static const char *
prev_utf8_char(const char *s, const char *p)
{
for (--p; p >= s; --p) {
if ((*p & 0xc0) != 0x80)
return p;
}
return NULL;
}
static void
delete_before_cursor(struct virtual_keyboard *keyboard)
{
const char *start, *end;
if (!keyboard->surrounding_text) {
fprintf(stderr, "delete_before_cursor: No surrounding text available\n");
return;
}
start = prev_utf8_char(keyboard->surrounding_text,
keyboard->surrounding_text + keyboard->surrounding_cursor);
if (!start) {
fprintf(stderr, "delete_before_cursor: No previous character to delete\n");
return;
}
end = keyboard->surrounding_text + keyboard->surrounding_cursor;
wl_input_method_context_delete_surrounding_text(keyboard->context,
(start - keyboard->surrounding_text) - keyboard->surrounding_cursor,
end - start);
wl_input_method_context_commit_string(keyboard->context,
keyboard->serial,
"");
/* Update surrounding text */
keyboard->surrounding_cursor = start - keyboard->surrounding_text;
keyboard->surrounding_text[keyboard->surrounding_cursor] = '\0';
if (*end)
memmove(keyboard->surrounding_text + keyboard->surrounding_cursor, end, strlen(end));
}
static void
keyboard_handle_key(struct keyboard *keyboard, uint32_t time, const struct key *key, struct input *input, enum wl_pointer_button_state state)
{
const char *label = keyboard->state == keyboardstate_default ? key->label : key->alt;
xkb_mod_mask_t mod_mask = keyboard->state == keyboardstate_default ? 0 : keyboard->keyboard->keysym.shift_mask;
uint32_t key_state = (state == WL_POINTER_BUTTON_STATE_PRESSED) ? WL_KEYBOARD_KEY_STATE_PRESSED : WL_KEYBOARD_KEY_STATE_RELEASED;
switch (key->key_type) {
case keytype_default:
if (state != WL_POINTER_BUTTON_STATE_PRESSED)
break;
keyboard->keyboard->preedit_string = strcat(keyboard->keyboard->preedit_string,
label);
virtual_keyboard_send_preedit(keyboard->keyboard, -1);
break;
case keytype_backspace:
if (state != WL_POINTER_BUTTON_STATE_PRESSED)
break;
if (strlen(keyboard->keyboard->preedit_string) == 0) {
delete_before_cursor(keyboard->keyboard);
} else {
keyboard->keyboard->preedit_string[strlen(keyboard->keyboard->preedit_string) - 1] = '\0';
virtual_keyboard_send_preedit(keyboard->keyboard, -1);
}
break;
case keytype_enter:
virtual_keyboard_commit_preedit(keyboard->keyboard);
wl_input_method_context_keysym(keyboard->keyboard->context,
display_get_serial(keyboard->keyboard->display),
time,
XKB_KEY_Return, key_state, mod_mask);
break;
case keytype_space:
if (state != WL_POINTER_BUTTON_STATE_PRESSED)
break;
keyboard->keyboard->preedit_string = strcat(keyboard->keyboard->preedit_string,
" ");
virtual_keyboard_commit_preedit(keyboard->keyboard);
break;
case keytype_switch:
if (state != WL_POINTER_BUTTON_STATE_PRESSED)
break;
if (keyboard->state == keyboardstate_default)
keyboard->state = keyboardstate_uppercase;
else
keyboard->state = keyboardstate_default;
break;
case keytype_symbols:
if (state != WL_POINTER_BUTTON_STATE_PRESSED)
break;
break;
case keytype_tab:
virtual_keyboard_commit_preedit(keyboard->keyboard);
wl_input_method_context_keysym(keyboard->keyboard->context,
display_get_serial(keyboard->keyboard->display),
time,
XKB_KEY_Tab, key_state, mod_mask);
break;
case keytype_arrow_up:
virtual_keyboard_commit_preedit(keyboard->keyboard);
wl_input_method_context_keysym(keyboard->keyboard->context,
display_get_serial(keyboard->keyboard->display),
time,
XKB_KEY_Up, key_state, mod_mask);
break;
case keytype_arrow_left:
virtual_keyboard_commit_preedit(keyboard->keyboard);
wl_input_method_context_keysym(keyboard->keyboard->context,
display_get_serial(keyboard->keyboard->display),
time,
XKB_KEY_Left, key_state, mod_mask);
break;
case keytype_arrow_right:
virtual_keyboard_commit_preedit(keyboard->keyboard);
wl_input_method_context_keysym(keyboard->keyboard->context,
display_get_serial(keyboard->keyboard->display),
time,
XKB_KEY_Right, key_state, mod_mask);
break;
case keytype_arrow_down:
virtual_keyboard_commit_preedit(keyboard->keyboard);
wl_input_method_context_keysym(keyboard->keyboard->context,
display_get_serial(keyboard->keyboard->display),
time,
XKB_KEY_Down, key_state, mod_mask);
break;
case keytype_style:
if (state != WL_POINTER_BUTTON_STATE_PRESSED)
break;
keyboard->keyboard->preedit_style = (keyboard->keyboard->preedit_style + 1) % 8; /* TODO */
virtual_keyboard_send_preedit(keyboard->keyboard, -1);
break;
}
}
static void
button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button,
enum wl_pointer_button_state state, void *data)
{
struct keyboard *keyboard = data;
struct rectangle allocation;
int32_t x, y;
int row, col;
unsigned int i;
const struct layout *layout;
layout = get_current_layout(keyboard->keyboard);
if (button != BTN_LEFT) {
return;
}
input_get_position(input, &x, &y);
widget_get_allocation(keyboard->widget, &allocation);
x -= allocation.x;
y -= allocation.y;
row = y / key_height;
col = x / key_width + row * layout->columns;
for (i = 0; i < layout->count; ++i) {
col -= layout->keys[i].width;
if (col < 0) {
keyboard_handle_key(keyboard, time, &layout->keys[i], input, state);
break;
}
}
widget_schedule_redraw(widget);
}
static void
touch_handler(struct input *input, uint32_t time,
float x, float y, uint32_t state, void *data)
{
struct keyboard *keyboard = data;
struct rectangle allocation;
int row, col;
unsigned int i;
const struct layout *layout;
layout = get_current_layout(keyboard->keyboard);
widget_get_allocation(keyboard->widget, &allocation);
x -= allocation.x;
y -= allocation.y;
row = (int)y / key_height;
col = (int)x / key_width + row * layout->columns;
for (i = 0; i < layout->count; ++i) {
col -= layout->keys[i].width;
if (col < 0) {
keyboard_handle_key(keyboard, time,
&layout->keys[i], input, state);
break;
}
}
widget_schedule_redraw(keyboard->widget);
}
static void
touch_down_handler(struct widget *widget, struct input *input,
uint32_t serial, uint32_t time, int32_t id,
float x, float y, void *data)
{
touch_handler(input, time, x, y,
WL_POINTER_BUTTON_STATE_PRESSED, data);
}
static void
touch_up_handler(struct widget *widget, struct input *input,
uint32_t serial, uint32_t time, int32_t id,
void *data)
{
float x, y;
input_get_touch(input, id, &x, &y);
touch_handler(input, time, x, y,
WL_POINTER_BUTTON_STATE_RELEASED, data);
}
static void
handle_surrounding_text(void *data,
struct wl_input_method_context *context,
const char *text,
uint32_t cursor,
uint32_t anchor)
{
struct virtual_keyboard *keyboard = data;
free(keyboard->surrounding_text);
keyboard->surrounding_text = strdup(text);
keyboard->surrounding_cursor = cursor;
}
static void
handle_reset(void *data,
struct wl_input_method_context *context)
{
struct virtual_keyboard *keyboard = data;
fprintf(stderr, "Reset pre-edit buffer\n");
if (strlen(keyboard->preedit_string)) {
free(keyboard->preedit_string);
keyboard->preedit_string = strdup("");
}
}
static void
handle_content_type(void *data,
struct wl_input_method_context *context,
uint32_t hint,
uint32_t purpose)
{
struct virtual_keyboard *keyboard = data;
keyboard->content_hint = hint;
keyboard->content_purpose = purpose;
}
static void
handle_invoke_action(void *data,
struct wl_input_method_context *context,
uint32_t button,
uint32_t index)
{
struct virtual_keyboard *keyboard = data;
if (button != BTN_LEFT)
return;
virtual_keyboard_send_preedit(keyboard, index);
}
static void
handle_commit_state(void *data,
struct wl_input_method_context *context,
uint32_t serial)
{
struct virtual_keyboard *keyboard = data;
const struct layout *layout;
keyboard->serial = serial;
layout = get_current_layout(keyboard);
if (keyboard->surrounding_text)
fprintf(stderr, "Surrounding text updated: %s\n", keyboard->surrounding_text);
window_schedule_resize(keyboard->keyboard->window,
layout->columns * key_width,
layout->rows * key_height);
wl_input_method_context_language(context, keyboard->serial, layout->language);
wl_input_method_context_text_direction(context, keyboard->serial, layout->text_direction);
widget_schedule_redraw(keyboard->keyboard->widget);
}
static void
handle_preferred_language(void *data,
struct wl_input_method_context *context,
const char *language)
{
struct virtual_keyboard *keyboard = data;
if (keyboard->preferred_language)
free(keyboard->preferred_language);
keyboard->preferred_language = NULL;
if (language)
keyboard->preferred_language = strdup(language);
}
static const struct wl_input_method_context_listener input_method_context_listener = {
handle_surrounding_text,
handle_reset,
handle_content_type,
handle_invoke_action,
handle_commit_state,
handle_preferred_language
};
static void
input_method_activate(void *data,
struct wl_input_method *input_method,
struct wl_input_method_context *context)
{
struct virtual_keyboard *keyboard = data;
struct wl_array modifiers_map;
const struct layout *layout;
keyboard->keyboard->state = keyboardstate_default;
if (keyboard->context)
wl_input_method_context_destroy(keyboard->context);
if (keyboard->preedit_string)
free(keyboard->preedit_string);
keyboard->preedit_string = strdup("");
keyboard->content_hint = 0;
keyboard->content_purpose = 0;
free(keyboard->preferred_language);
keyboard->preferred_language = NULL;
free(keyboard->surrounding_text);
keyboard->surrounding_text = NULL;
keyboard->serial = 0;
keyboard->context = context;
wl_input_method_context_add_listener(context,
&input_method_context_listener,
keyboard);
wl_array_init(&modifiers_map);
keysym_modifiers_add(&modifiers_map, "Shift");
keysym_modifiers_add(&modifiers_map, "Control");
keysym_modifiers_add(&modifiers_map, "Mod1");
wl_input_method_context_modifiers_map(context, &modifiers_map);
keyboard->keysym.shift_mask = keysym_modifiers_get_mask(&modifiers_map, "Shift");
wl_array_release(&modifiers_map);
layout = get_current_layout(keyboard);
window_schedule_resize(keyboard->keyboard->window,
layout->columns * key_width,
layout->rows * key_height);
wl_input_method_context_language(context, keyboard->serial, layout->language);
wl_input_method_context_text_direction(context, keyboard->serial, layout->text_direction);
widget_schedule_redraw(keyboard->keyboard->widget);
}
static void
input_method_deactivate(void *data,
struct wl_input_method *input_method,
struct wl_input_method_context *context)
{
struct virtual_keyboard *keyboard = data;
if (!keyboard->context)
return;
wl_input_method_context_destroy(keyboard->context);
keyboard->context = NULL;
}
static const struct wl_input_method_listener input_method_listener = {
input_method_activate,
input_method_deactivate
};
static void
global_handler(struct display *display, uint32_t name,
const char *interface, uint32_t version, void *data)
{
struct virtual_keyboard *keyboard = data;
if (!strcmp(interface, "wl_input_panel")) {
keyboard->input_panel =
display_bind(display, name, &wl_input_panel_interface, 1);
} else if (!strcmp(interface, "wl_input_method")) {
keyboard->input_method =
display_bind(display, name,
&wl_input_method_interface, 1);
wl_input_method_add_listener(keyboard->input_method, &input_method_listener, keyboard);
}
}
static void
keyboard_create(struct output *output, struct virtual_keyboard *virtual_keyboard)
{
struct keyboard *keyboard;
const struct layout *layout;
struct wl_input_panel_surface *ips;
layout = get_current_layout(virtual_keyboard);
keyboard = xzalloc(sizeof *keyboard);
keyboard->keyboard = virtual_keyboard;
keyboard->window = window_create_custom(virtual_keyboard->display);
keyboard->widget = window_add_widget(keyboard->window, keyboard);
virtual_keyboard->keyboard = keyboard;
window_set_title(keyboard->window, "Virtual keyboard");
window_set_user_data(keyboard->window, keyboard);
widget_set_redraw_handler(keyboard->widget, redraw_handler);
widget_set_resize_handler(keyboard->widget, resize_handler);
widget_set_button_handler(keyboard->widget, button_handler);
widget_set_touch_down_handler(keyboard->widget, touch_down_handler);
widget_set_touch_up_handler(keyboard->widget, touch_up_handler);
window_schedule_resize(keyboard->window,
layout->columns * key_width,
layout->rows * key_height);
ips = wl_input_panel_get_input_panel_surface(virtual_keyboard->input_panel,
window_get_wl_surface(keyboard->window));
wl_input_panel_surface_set_toplevel(ips,
output_get_wl_output(output),
WL_INPUT_PANEL_SURFACE_POSITION_CENTER_BOTTOM);
}
int
main(int argc, char *argv[])
{
struct virtual_keyboard virtual_keyboard;
struct output *output;
memset(&virtual_keyboard, 0, sizeof virtual_keyboard);
virtual_keyboard.display = display_create(&argc, argv);
if (virtual_keyboard.display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
display_set_user_data(virtual_keyboard.display, &virtual_keyboard);
display_set_global_handler(virtual_keyboard.display, global_handler);
output = display_get_output(virtual_keyboard.display);
keyboard_create(output, &virtual_keyboard);
display_run(virtual_keyboard.display);
return 0;
}