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/*
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* Copyright © 2012 Openismus GmbH
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <linux/input.h>
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#include <cairo.h>
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#include "window.h"
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#include "text-client-protocol.h"
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#include "desktop-shell-client-protocol.h"
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struct virtual_keyboard {
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struct input_panel *input_panel;
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struct input_method *input_method;
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struct display *display;
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};
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struct keyboard {
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struct virtual_keyboard *keyboard;
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struct window *window;
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struct widget *widget;
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int cx;
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int cy;
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};
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static void
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redraw_handler(struct widget *widget, void *data)
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{
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struct keyboard *keyboard = data;
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cairo_surface_t *surface;
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struct rectangle allocation;
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cairo_t *cr;
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int cx, cy;
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int i;
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surface = window_get_surface(keyboard->window);
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widget_get_allocation(keyboard->widget, &allocation);
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cr = cairo_create(surface);
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cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height);
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cairo_clip(cr);
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cairo_translate(cr, allocation.x, allocation.y);
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cx = keyboard->cx;
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cy = keyboard->cy;
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
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cairo_rectangle(cr, 0, 0, 10 * cx, 5 * cy);
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cairo_paint(cr);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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for (i = 0; i <= 'Z' - '0'; ++i) {
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const int x = i % 10;
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const int y = i / 10;
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char text[] = { i + '0', '\0' };
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cairo_text_extents_t extents;
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int dx, dy;
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cairo_text_extents(cr, text, &extents);
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dx = extents.width;
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dy = extents.height;
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cairo_set_source_rgb(cr, 0, 0, 0);
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cairo_rectangle(cr, x * cx, y * cy, cx, cy);
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cairo_stroke(cr);
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cairo_move_to(cr, x * cx + 0.5 * (cx - dx), y * cy + 0.5 * (cy - dy));
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cairo_set_source_rgb(cr, 0, 0, 0);
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cairo_show_text(cr, text);
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}
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cairo_destroy(cr);
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cairo_surface_destroy(surface);
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}
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static void
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resize_handler(struct widget *widget,
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int32_t width, int32_t height, void *data)
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{
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/* struct keyboard *keyboard = data; */
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}
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static void
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button_handler(struct widget *widget,
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struct input *input, uint32_t time,
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uint32_t button,
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enum wl_pointer_button_state state, void *data)
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{
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struct keyboard *keyboard = data;
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struct rectangle allocation;
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int32_t x, y;
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char text[] = { '0', '\0' };
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if (state != WL_POINTER_BUTTON_STATE_PRESSED || button != BTN_LEFT) {
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return;
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}
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input_get_position(input, &x, &y);
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widget_get_allocation(keyboard->widget, &allocation);
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x -= allocation.x;
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y -= allocation.y;
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text[0] = y / keyboard->cy * 10 + x / keyboard->cx + '0';
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input_method_commit_string(keyboard->keyboard->input_method, text, -1);
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widget_schedule_redraw(widget);
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}
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static void
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global_handler(struct wl_display *display, uint32_t id,
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const char *interface, uint32_t version, void *data)
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{
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struct virtual_keyboard *keyboard = data;
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if (!strcmp(interface, "input_panel")) {
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keyboard->input_panel = wl_display_bind(display, id, &input_panel_interface);
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} else if (!strcmp(interface, "input_method")) {
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keyboard->input_method = wl_display_bind(display, id, &input_method_interface);
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}
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}
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static void
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keyboard_create(struct output *output, struct virtual_keyboard *virtual_keyboard)
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{
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struct keyboard *keyboard;
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keyboard = malloc(sizeof *keyboard);
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memset(keyboard, 0, sizeof *keyboard);
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keyboard->keyboard = virtual_keyboard;
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keyboard->window = window_create_custom(virtual_keyboard->display);
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keyboard->widget = window_add_widget(keyboard->window, keyboard);
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window_set_title(keyboard->window, "Virtual keyboard");
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window_set_user_data(keyboard->window, keyboard);
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keyboard->cx = 40;
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keyboard->cy = 40;
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widget_set_redraw_handler(keyboard->widget, redraw_handler);
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widget_set_resize_handler(keyboard->widget, resize_handler);
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widget_set_button_handler(keyboard->widget, button_handler);
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window_schedule_resize(keyboard->window, keyboard->cx * 10, keyboard->cy * 5);
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input_panel_set_surface(virtual_keyboard->input_panel,
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window_get_wl_surface(keyboard->window),
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output_get_wl_output(output));
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}
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static void
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handle_output_configure(struct output *output, void *data)
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{
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struct virtual_keyboard *virtual_keyboard = data;
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/* skip existing outputs */
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if (output_get_user_data(output))
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return;
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output_set_user_data(output, virtual_keyboard);
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keyboard_create(output, virtual_keyboard);
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}
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int
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main(int argc, char *argv[])
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{
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struct virtual_keyboard virtual_keyboard;
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virtual_keyboard.display = display_create(argc, argv);
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if (virtual_keyboard.display == NULL) {
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fprintf(stderr, "failed to create display: %m\n");
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return -1;
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}
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wl_display_add_global_listener(display_get_display(virtual_keyboard.display),
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global_handler, &virtual_keyboard);
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display_set_user_data(virtual_keyboard.display, &virtual_keyboard);
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display_set_output_configure_handler(virtual_keyboard.display, handle_output_configure);
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display_run(virtual_keyboard.display);
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return 0;
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}
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