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keyboard: Use a qwerty virtual keyboard layout

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Add support for a proper qwerty virtual keyboard layout with lowercase
and uppercase state, space and enter button.

Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>
Jan Arne Petersen 12 years ago committed by Kristian Høgsberg
parent 30b66ef1fd
commit 892f1c3975
1 changed files with 171 additions and 35 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 204
      clients/keyboard.c

204
clients/keyboard.c
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@ -39,14 +39,124 @@ struct virtual_keyboard {
struct display *display;
};
enum key_type {
keytype_default,
keytype_backspace,
keytype_enter,
keytype_space,
keytype_switch,
keytype_symbols,
keytype_tab
};
struct key {
enum key_type key_type;
char *label;
char *alt;
unsigned int width;
};
static const struct key 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", 2},
{ keytype_space, "", "", 8},
{ keytype_symbols, "?123", "?123", 2}
};
static const unsigned int columns = 12;
static const unsigned int rows = 4;
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;
int cx;
int cy;
enum keyboard_state state;
};
static void
draw_key(const struct key *key,
cairo_t *cr,
enum keyboard_state state,
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 = state == keyboardstate_default ? key->label : key->alt;
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 void
redraw_handler(struct widget *widget, void *data)
{
@ -54,8 +164,8 @@ redraw_handler(struct widget *widget, void *data)
cairo_surface_t *surface;
struct rectangle allocation;
cairo_t *cr;
int cx, cy;
int i;
unsigned int i;
unsigned int row = 0, col = 0;
surface = window_get_surface(keyboard->window);
widget_get_allocation(keyboard->widget, &allocation);
@ -64,37 +174,26 @@ redraw_handler(struct widget *widget, void *data)
cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height);
cairo_clip(cr);
cairo_translate(cr, allocation.x, allocation.y);
cairo_select_font_face(cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cr, 16);
cx = keyboard->cx;
cy = keyboard->cy;
cairo_translate(cr, allocation.x, allocation.y);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
cairo_rectangle(cr, 0, 0, 10 * cx, 5 * cy);
cairo_set_source_rgba(cr, 1, 1, 1, 0.75);
cairo_rectangle(cr, 0, 0, columns * key_width, rows * key_height);
cairo_paint(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
for (i = 0; i <= 'Z' - '0'; ++i) {
const int x = i % 10;
const int y = i / 10;
char text[] = { i + '0', '\0' };
cairo_text_extents_t extents;
int dx, dy;
cairo_text_extents(cr, text, &extents);
dx = extents.width;
dy = extents.height;
for (i = 0; i < sizeof(keys) / sizeof(*keys); ++i) {
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_rectangle(cr, x * cx, y * cy, cx, cy);
cairo_stroke(cr);
cairo_move_to(cr, x * cx + 0.5 * (cx - dx), y * cy + 0.5 * (cy - dy));
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_show_text(cr, text);
draw_key(&keys[i], cr, keyboard->state, row, col);
col += keys[i].width;
if (col >= columns) {
row += 1;
col = 0;
}
}
cairo_destroy(cr);
@ -108,6 +207,37 @@ resize_handler(struct widget *widget,
/* struct keyboard *keyboard = data; */
}
static void
keyboard_handle_key(struct keyboard *keyboard, const struct key *key)
{
const char *label = keyboard->state == keyboardstate_default ? key->label : key->alt;
switch (key->key_type) {
case keytype_default:
input_method_context_commit_string(keyboard->keyboard->context,
label, -1);
break;
case keytype_backspace:
break;
case keytype_enter:
break;
case keytype_space:
input_method_context_commit_string(keyboard->keyboard->context,
" ", -1);
break;
case keytype_switch:
if (keyboard->state == keyboardstate_default)
keyboard->state = keyboardstate_uppercase;
else
keyboard->state = keyboardstate_default;
break;
case keytype_symbols:
break;
case keytype_tab:
break;
}
}
static void
button_handler(struct widget *widget,
struct input *input, uint32_t time,
@ -117,7 +247,8 @@ button_handler(struct widget *widget,
struct keyboard *keyboard = data;
struct rectangle allocation;
int32_t x, y;
char text[] = { '0', '\0' };
int row, col;
unsigned int i;
if (state != WL_POINTER_BUTTON_STATE_PRESSED || button != BTN_LEFT) {
return;
@ -129,9 +260,15 @@ button_handler(struct widget *widget,
x -= allocation.x;
y -= allocation.y;
text[0] = y / keyboard->cy * 10 + x / keyboard->cx + '0';
row = y / key_height;
col = x / key_width + row * columns;
for (i = 0; i < sizeof(keys) / sizeof(*keys); ++i) {
col -= keys[i].width;
if (col < 0)
break;
}
input_method_context_commit_string(keyboard->keyboard->context, text, -1);
keyboard_handle_key(keyboard, &keys[i]);
widget_schedule_redraw(widget);
}
@ -214,14 +351,13 @@ keyboard_create(struct output *output, struct virtual_keyboard *virtual_keyboard
window_set_title(keyboard->window, "Virtual keyboard");
window_set_user_data(keyboard->window, keyboard);
keyboard->cx = 40;
keyboard->cy = 40;
widget_set_redraw_handler(keyboard->widget, redraw_handler);
widget_set_resize_handler(keyboard->widget, resize_handler);
widget_set_button_handler(keyboard->widget, button_handler);
window_schedule_resize(keyboard->window, keyboard->cx * 10, keyboard->cy * 5);
window_schedule_resize(keyboard->window,
columns * key_width,
rows * key_height);
input_panel_set_surface(virtual_keyboard->input_panel,
window_get_wl_surface(keyboard->window),

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