re-implemented keyboard for better performance and keypress detection. there is no longer css customization, but the keyboard is now responsive to the screen width.
This commit is contained in:
@@ -0,0 +1,13 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<interface>
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<object class="GtkWindow" id="main_window">
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<property name="title">OSKeyboard</property>
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<child>
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<object class="GtkDrawingArea" id="drawing_area">
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<property name="can-focus">FALSE</property>
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<property name="hexpand">TRUE</property>
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</object>
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</child>
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</object>
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</interface>
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@@ -0,0 +1,97 @@
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#ifndef KEYMAP_H
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#define KEYMAP_H
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#include <linux/input-event-codes.h>
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typedef struct {
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const char *label;
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const char *shift_label;
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int key_code;
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float weight;
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} KeyDef;
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typedef struct {
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KeyDef *keys;
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int key_count;
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float total_weight;
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} RowDef;
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static const RowDef keys[] = {
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// Top Row (0)
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{(KeyDef[]){{"`", "~", KEY_GRAVE, 1.0},
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{"1", "!", KEY_1, 1.0},
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{"2", "@", KEY_2, 1.0},
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{"3", "#", KEY_3, 1.0},
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{"4", "$", KEY_4, 1.0},
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{"5", "%", KEY_5, 1.0},
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{"6", "^", KEY_6, 1.0},
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{"7", "&", KEY_7, 1.0},
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{"8", "*", KEY_8, 1.0},
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{"9", "(", KEY_9, 1.0},
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{"0", ")", KEY_0, 1.0},
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{"-", "_", KEY_MINUS, 1.0},
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{"=", "+", KEY_EQUAL, 1.0},
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{"Backspace", "Backspace", KEY_BACKSPACE, 1.5}},
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14, 14.5},
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// Row 1
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{(KeyDef[]){{"Tab", "Tab", KEY_TAB, 1.5},
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{"q", "Q", KEY_Q, 1.0},
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{"w", "W", KEY_W, 1.0},
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{"e", "E", KEY_E, 1.0},
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{"r", "R", KEY_R, 1.0},
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{"t", "T", KEY_T, 1.0},
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{"y", "Y", KEY_Y, 1.0},
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{"u", "U", KEY_U, 1.0},
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{"i", "I", KEY_I, 1.0},
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{"o", "O", KEY_O, 1.0},
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{"p", "P", KEY_P, 1.0},
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{"[", "{", KEY_LEFTBRACE, 1.0},
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{"]", "}", KEY_RIGHTBRACE, 1.0},
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{"\\", "|", KEY_BACKSLASH, 1.0}},
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14, 14.5},
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// Row 2
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{(KeyDef[]){{"Escape", "Escape", KEY_ESC, 2.0},
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{"a", "A", KEY_A, 1.0},
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{"s", "S", KEY_S, 1.0},
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{"d", "D", KEY_D, 1.0},
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{"f", "F", KEY_F, 1.0},
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{"g", "G", KEY_G, 1.0},
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{"h", "H", KEY_H, 1.0},
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{"j", "J", KEY_J, 1.0},
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{"k", "K", KEY_K, 1.0},
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{"l", "L", KEY_L, 1.0},
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{";", ":", KEY_SEMICOLON, 1.0},
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{"'", "\"", KEY_APOSTROPHE, 1.0},
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{"Enter", "Enter", KEY_ENTER, 2.0}},
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13, 15.0},
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// Row 3
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{(KeyDef[]){{"Shift", "Shift", KEY_LEFTSHIFT, 2.5},
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{"z", "Z", KEY_Z, 1.0},
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{"x", "X", KEY_X, 1.0},
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{"c", "C", KEY_C, 1.0},
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{"v", "V", KEY_V, 1.0},
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{"b", "B", KEY_B, 1.0},
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{"n", "N", KEY_N, 1.0},
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{"m", "M", KEY_M, 1.0},
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{",", "<", KEY_COMMA, 1.0},
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{".", ">", KEY_DOT, 1.0},
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{"/", "?", KEY_SLASH, 1.0},
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{"Shift", "Shift", KEY_RIGHTSHIFT, 2.0}},
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12, 14.5},
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// Row 4
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{(KeyDef[]){{"Ctrl", "Ctrl", KEY_LEFTCTRL, 2.0},
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{"Super", "Super", KEY_LEFTMETA, 1.0},
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{"Alt", "Alt", KEY_LEFTALT, 1.0},
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{"Space", "Space", KEY_SPACE, 6.0},
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{"Alt", "Alt", KEY_RIGHTALT, 1.0},
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{"Ctrl", "Ctrl", KEY_RIGHTCTRL, 1.0}},
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6, 12.0},
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};
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#define KEY_MAP_SIZE (sizeof(keys) / sizeof(RowDef))
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#endif
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+235
@@ -0,0 +1,235 @@
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#include "cairo.h"
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#include "glib-object.h"
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#include "keymap.h"
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#include <fcntl.h>
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#include <gtk/gtk.h>
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#include <gtk4-layer-shell/gtk4-layer-shell.h>
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#include <libevdev/libevdev-uinput.h>
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#include <libevdev/libevdev.h>
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#include <stdio.h>
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GtkWidget *window = NULL;
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GtkDrawingArea *area = NULL;
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struct libevdev *dev;
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struct libevdev_uinput *uidev;
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static gboolean shift_active = FALSE;
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static gboolean alt_active = FALSE;
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static gboolean ctrl_active = FALSE;
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void send_keypress(int key_code) {
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if (!uidev)
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return;
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libevdev_uinput_write_event(uidev, EV_KEY, key_code, 1);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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libevdev_uinput_write_event(uidev, EV_KEY, key_code, 0);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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}
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static void on_click_pressed(GtkGestureClick *gesture, int n_press, double x,
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double y, gpointer data) {
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GtkWidget *widget =
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gtk_event_controller_get_widget(GTK_EVENT_CONTROLLER(gesture));
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int width = gtk_widget_get_width(widget);
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int height = gtk_widget_get_height(widget);
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int row_height = height / 5;
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int row_index = (int)(y / row_height);
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if (row_index < 0 || row_index >= 5)
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return;
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RowDef row = keys[row_index];
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double unit_width = (double)width / row.total_weight;
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double current_x = 0;
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for (int i = 0; i < row.key_count; i++) {
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double next_x = current_x + (row.keys[i].weight * unit_width);
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if (x >= current_x && x <= next_x) {
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KeyDef *clicked_key = &row.keys[i];
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if (clicked_key->key_code == KEY_LEFTSHIFT ||
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clicked_key->key_code == KEY_RIGHTSHIFT) {
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shift_active = !shift_active;
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gtk_widget_queue_draw(GTK_WIDGET(area));
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return;
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}
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if (clicked_key->key_code == KEY_LEFTALT ||
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clicked_key->key_code == KEY_RIGHTALT) {
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alt_active = !alt_active;
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return;
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}
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if (clicked_key->key_code == KEY_LEFTCTRL ||
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clicked_key->key_code == KEY_RIGHTCTRL) {
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ctrl_active = !ctrl_active;
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return;
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}
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if (shift_active) {
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libevdev_uinput_write_event(uidev, EV_KEY, KEY_LEFTSHIFT, 1);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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}
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if (alt_active) {
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libevdev_uinput_write_event(uidev, EV_KEY, KEY_LEFTALT, 1);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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}
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if (ctrl_active) {
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libevdev_uinput_write_event(uidev, EV_KEY, KEY_LEFTCTRL, 1);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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}
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send_keypress(clicked_key->key_code);
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if (shift_active) {
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libevdev_uinput_write_event(uidev, EV_KEY, KEY_LEFTSHIFT, 0);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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shift_active = FALSE;
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gtk_widget_queue_draw(GTK_WIDGET(area));
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}
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if (alt_active) {
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libevdev_uinput_write_event(uidev, EV_KEY, KEY_LEFTALT, 0);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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alt_active = FALSE;
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}
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if (ctrl_active) {
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libevdev_uinput_write_event(uidev, EV_KEY, KEY_LEFTCTRL, 0);
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libevdev_uinput_write_event(uidev, EV_SYN, SYN_REPORT, 0);
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ctrl_active = FALSE;
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}
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break;
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}
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current_x = next_x;
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}
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}
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static void draw_key(cairo_t *ct, KeyDef key, int x, int y, int key_width,
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int key_height) {
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cairo_set_source_rgba(ct, 1.0, 1.0, 1.0, 1.0);
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cairo_set_line_width(ct, 3.0);
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cairo_rectangle(ct, x, y, key_width, key_height);
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cairo_stroke(ct);
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cairo_select_font_face(ct, "Hack Nerd Font Mono", CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size(ct, key_height * 0.17);
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const char *label_text = shift_active ? key.shift_label : key.label;
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cairo_text_extents_t extents;
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cairo_text_extents(ct, label_text, &extents);
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double tx = x + (key_width - extents.width) / 2.0 - extents.x_bearing;
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double ty = y + (key_height - extents.height) / 2.0 - extents.y_bearing;
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cairo_set_source_rgba(ct, 1.0, 1.0, 1.0, 1.0);
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cairo_move_to(ct, tx, ty);
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cairo_show_text(ct, label_text);
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}
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static void draw_row(cairo_t *ct, RowDef row, int row_i, int width,
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int height) {
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int key_count = row.key_count;
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float total_weight = row.total_weight;
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double key_width = width / total_weight;
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int key_height = height / 5;
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double y = key_height * row_i;
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double x = 0;
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for (int i = 0; i < key_count; i++) {
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double weighted_key_width = key_width * row.keys[i].weight;
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draw_key(ct, row.keys[i], x, y, weighted_key_width, key_height);
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x += weighted_key_width;
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}
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}
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static void draw_keyboard(GtkDrawingArea *area, cairo_t *ct, int width,
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int height, gpointer data) {
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cairo_set_source_rgba(ct, 0.0, 0.0, 0.0, 1.0);
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cairo_paint(ct);
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for (int i = 0; i < 5; i++) {
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draw_row(ct, keys[i], i, width, height);
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}
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}
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void init_evdev_keyboard() {
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dev = libevdev_new();
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libevdev_set_name(dev, "OSKeyboard");
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libevdev_enable_event_type(dev, EV_KEY);
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for (int r = 0; r < 5; r++) {
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for (int k = 0; k < keys[r].key_count; k++) {
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libevdev_enable_event_code(dev, EV_KEY, keys[r].keys[k].key_code, NULL);
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}
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}
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int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
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if (fd < 0) {
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fprintf(stderr, "Failed to open /dev/uinput: %s\n", strerror(errno));
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return;
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}
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int err = libevdev_uinput_create_from_device(dev, fd, &uidev);
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if (err != 0) {
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fprintf(stderr, "Failed to create uinput device: %s\n", strerror(-err));
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close(fd);
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return;
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}
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}
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static void activate(GtkApplication *app, gpointer user_data) {
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if (window) {
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if (gtk_widget_get_visible(window)) {
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gtk_widget_set_visible(window, FALSE);
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} else {
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gtk_window_present(GTK_WINDOW(window));
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}
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return;
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}
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GtkBuilder *builder =
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gtk_builder_new_from_resource("/org/spaces/oskeyboard/keyboard.ui");
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window = GTK_WIDGET(gtk_builder_get_object(builder, "main_window"));
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gtk_layer_init_for_window(GTK_WINDOW(window));
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gtk_layer_set_layer(GTK_WINDOW(window), GTK_LAYER_SHELL_EDGE_BOTTOM);
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gtk_layer_auto_exclusive_zone_enable(GTK_WINDOW(window));
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gtk_layer_set_keyboard_mode(GTK_WINDOW(window), FALSE);
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gtk_layer_set_anchor(GTK_WINDOW(window), GTK_LAYER_SHELL_EDGE_BOTTOM, TRUE);
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gtk_layer_set_anchor(GTK_WINDOW(window), GTK_LAYER_SHELL_EDGE_LEFT, TRUE);
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gtk_layer_set_anchor(GTK_WINDOW(window), GTK_LAYER_SHELL_EDGE_RIGHT, TRUE);
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gtk_widget_set_size_request(window, 1000, 500);
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gtk_window_set_application(GTK_WINDOW(window), app);
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area = GTK_DRAWING_AREA(gtk_builder_get_object(builder, "drawing_area"));
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gtk_drawing_area_set_draw_func(area, draw_keyboard, NULL, NULL);
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GtkGesture *gesture = gtk_gesture_click_new();
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g_signal_connect(gesture, "pressed", G_CALLBACK(on_click_pressed), NULL);
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gtk_widget_add_controller(GTK_WIDGET(area), GTK_EVENT_CONTROLLER(gesture));
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init_evdev_keyboard();
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gtk_window_present(GTK_WINDOW(window));
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g_object_unref(builder);
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}
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int main(int argc, char **argv) {
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GtkApplication *app =
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gtk_application_new("org.spaces.oskeyboard", G_APPLICATION_DEFAULT_FLAGS);
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g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
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int status = g_application_run(G_APPLICATION(app), argc, argv);
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g_object_unref(app);
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return status;
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}
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@@ -0,0 +1,12 @@
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# Compile the resources into a C file
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res = gnome.compile_resources(
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'oskeyboard-resources',
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'resources.xml',
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source_dir: '.', # Look for .ui and .css in the current directory
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)
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executable('osk',
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'main.c',
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res, # Add the compiled resource file to the sources
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dependencies : [gtk_dep, libevdev_dep, layer_shell_dep],
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install : true)
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@@ -0,0 +1,7 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<gresources>
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<gresource prefix="/org/spaces/oskeyboard">
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<file>keyboard.ui</file>
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<file>style.css</file>
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</gresource>
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</gresources>
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@@ -0,0 +1,26 @@
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* {
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background-color: transparent;
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}
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window {
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margin-bottom: 25px;
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}
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button {
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background-color: black;
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border: 3px solid white;
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border-radius: 15px;
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background-color: black;
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margin: 0;
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padding: 0;
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min-width: 94px;
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min-height: 94px;
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}
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button > * {
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background-color: black;
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color: white;
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border-radius: 15px;
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font-size: 20px;
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}
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Reference in New Issue
Block a user