diff --git a/Makefile.am b/Makefile.am index 2e9eebcc..cdf7bdb0 100644 --- a/Makefile.am +++ b/Makefile.am @@ -461,6 +461,7 @@ demo_clients = \ weston-resizor \ weston-eventdemo \ weston-clickdot \ + weston-confine \ weston-transformed \ weston-fullscreen \ weston-stacking \ @@ -669,6 +670,12 @@ weston_clickdot_SOURCES = \ weston_clickdot_LDADD = libtoytoolkit.la weston_clickdot_CFLAGS = $(AM_CFLAGS) $(CLIENT_CFLAGS) +weston_confine_SOURCES = \ + clients/confine.c \ + shared/helpers.h +weston_confine_LDADD = libtoytoolkit.la +weston_confine_CFLAGS = $(AM_CFLAGS) $(CLIENT_CFLAGS) + weston_transformed_SOURCES = clients/transformed.c weston_transformed_LDADD = libtoytoolkit.la weston_transformed_CFLAGS = $(AM_CFLAGS) $(CLIENT_CFLAGS) diff --git a/clients/confine.c b/clients/confine.c new file mode 100644 index 00000000..17503b35 --- /dev/null +++ b/clients/confine.c @@ -0,0 +1,331 @@ +/* + * Copyright © 2010 Intel Corporation + * Copyright © 2012 Collabora, Ltd. + * Copyright © 2012 Jonas Ådahl + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "window.h" +#include "shared/helpers.h" +#include "shared/xalloc.h" + +struct confine { + struct display *display; + struct window *window; + struct widget *widget; + + cairo_surface_t *buffer; + + struct { + int32_t x, y; + int32_t old_x, old_y; + } line; + + int reset; + + struct input *cursor_timeout_input; + int cursor_timeout_fd; + struct task cursor_timeout_task; +}; + +static void +draw_line(struct confine *confine, cairo_t *cr, + struct rectangle *allocation) +{ + cairo_t *bcr; + cairo_surface_t *tmp_buffer = NULL; + + if (confine->reset) { + tmp_buffer = confine->buffer; + confine->buffer = NULL; + confine->line.x = -1; + confine->line.y = -1; + confine->line.old_x = -1; + confine->line.old_y = -1; + confine->reset = 0; + } + + if (confine->buffer == NULL) { + confine->buffer = + cairo_image_surface_create(CAIRO_FORMAT_ARGB32, + allocation->width, + allocation->height); + bcr = cairo_create(confine->buffer); + cairo_set_source_rgba(bcr, 0, 0, 0, 0); + cairo_rectangle(bcr, + 0, 0, + allocation->width, allocation->height); + cairo_fill(bcr); + } + else + bcr = cairo_create(confine->buffer); + + if (tmp_buffer) { + cairo_set_source_surface(bcr, tmp_buffer, 0, 0); + cairo_rectangle(bcr, 0, 0, + allocation->width, allocation->height); + cairo_clip(bcr); + cairo_paint(bcr); + + cairo_surface_destroy(tmp_buffer); + } + + if (confine->line.x != -1 && confine->line.y != -1) { + if (confine->line.old_x != -1 && + confine->line.old_y != -1) { + cairo_set_line_width(bcr, 2.0); + cairo_set_source_rgb(bcr, 1, 1, 1); + cairo_translate(bcr, + -allocation->x, -allocation->y); + + cairo_move_to(bcr, + confine->line.old_x, + confine->line.old_y); + cairo_line_to(bcr, + confine->line.x, + confine->line.y); + + cairo_stroke(bcr); + } + + confine->line.old_x = confine->line.x; + confine->line.old_y = confine->line.y; + } + cairo_destroy(bcr); + + cairo_set_source_surface(cr, confine->buffer, + allocation->x, allocation->y); + cairo_set_operator(cr, CAIRO_OPERATOR_ADD); + cairo_rectangle(cr, + allocation->x, allocation->y, + allocation->width, allocation->height); + cairo_clip(cr); + cairo_paint(cr); +} + +static void +redraw_handler(struct widget *widget, void *data) +{ + struct confine *confine = data; + cairo_surface_t *surface; + cairo_t *cr; + struct rectangle allocation; + + widget_get_allocation(confine->widget, &allocation); + + surface = window_get_surface(confine->window); + + cr = cairo_create(surface); + cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); + cairo_rectangle(cr, + allocation.x, + allocation.y, + allocation.width, + allocation.height); + cairo_set_source_rgba(cr, 0, 0, 0, 0.8); + cairo_fill(cr); + + draw_line(confine, cr, &allocation); + + cairo_destroy(cr); + + cairo_surface_destroy(surface); +} + +static void +keyboard_focus_handler(struct window *window, + struct input *device, void *data) +{ + struct confine *confine = data; + + window_schedule_redraw(confine->window); +} + +static void +key_handler(struct window *window, struct input *input, uint32_t time, + uint32_t key, uint32_t sym, + enum wl_keyboard_key_state state, void *data) +{ + struct confine *confine = data; + + if (state == WL_KEYBOARD_KEY_STATE_RELEASED) + return; + + switch (sym) { + case XKB_KEY_Escape: + display_exit(confine->display); + break; + } +} + +static void +cursor_timeout_reset(struct confine *confine) +{ + const long cursor_timeout = 500; + struct itimerspec its; + + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 0; + its.it_value.tv_sec = cursor_timeout / 1000; + its.it_value.tv_nsec = (cursor_timeout % 1000) * 1000 * 1000; + timerfd_settime(confine->cursor_timeout_fd, 0, &its, NULL); +} + +static int +motion_handler(struct widget *widget, + struct input *input, uint32_t time, + float x, float y, void *data) +{ + struct confine *confine = data; + confine->line.x = x; + confine->line.y = y; + + window_schedule_redraw(confine->window); + + cursor_timeout_reset(confine); + confine->cursor_timeout_input = input; + + return CURSOR_BLANK; +} + +static void +resize_handler(struct widget *widget, + int32_t width, int32_t height, + void *data) +{ + struct confine *confine = data; + + confine->reset = 1; +} + +static void +leave_handler(struct widget *widget, + struct input *input, void *data) +{ + struct confine *confine = data; + + confine->reset = 1; +} + +static void +cursor_timeout_func(struct task *task, uint32_t events) +{ + struct confine *confine = + container_of(task, struct confine, cursor_timeout_task); + uint64_t exp; + + if (read(confine->cursor_timeout_fd, &exp, sizeof (uint64_t)) != + sizeof(uint64_t)) + abort(); + + input_set_pointer_image(confine->cursor_timeout_input, + CURSOR_LEFT_PTR); +} + +static struct confine * +confine_create(struct display *display) +{ + struct confine *confine; + + confine = xzalloc(sizeof *confine); + confine->window = window_create(display); + confine->widget = window_frame_create(confine->window, confine); + window_set_title(confine->window, "Wayland Confine"); + confine->display = display; + confine->buffer = NULL; + + window_set_key_handler(confine->window, key_handler); + window_set_user_data(confine->window, confine); + window_set_keyboard_focus_handler(confine->window, + keyboard_focus_handler); + + widget_set_redraw_handler(confine->widget, redraw_handler); + widget_set_motion_handler(confine->widget, motion_handler); + widget_set_resize_handler(confine->widget, resize_handler); + widget_set_leave_handler(confine->widget, leave_handler); + + widget_schedule_resize(confine->widget, 500, 400); + confine->line.x = -1; + confine->line.y = -1; + confine->line.old_x = -1; + confine->line.old_y = -1; + confine->reset = 0; + + confine->cursor_timeout_fd = + timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC); + confine->cursor_timeout_task.run = cursor_timeout_func; + display_watch_fd(window_get_display(confine->window), + confine->cursor_timeout_fd, + EPOLLIN, &confine->cursor_timeout_task); + + return confine; +} + +static void +confine_destroy(struct confine *confine) +{ + display_unwatch_fd(window_get_display(confine->window), + confine->cursor_timeout_fd); + close(confine->cursor_timeout_fd); + if (confine->buffer) + cairo_surface_destroy(confine->buffer); + widget_destroy(confine->widget); + window_destroy(confine->window); + free(confine); +} + +int +main(int argc, char *argv[]) +{ + struct display *display; + struct confine *confine; + + display = display_create(&argc, argv); + if (display == NULL) { + fprintf(stderr, "failed to create display: %m\n"); + return -1; + } + + confine = confine_create(display); + + display_run(display); + + confine_destroy(confine); + display_destroy(display); + + return 0; +}