clients: Fork clickdot as confine
The new confine client will be used to demonstrate pointer confinement. It is so far identical to clickdot except that it doesn't respond to clicks. Signed-off-by: Jonas Ådahl <jadahl@gmail.com> Reviewed-by: Derek Foreman <derekf@osg.samsung.com> Acked-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Jonas Ådahl
parent
9f8c8942ba
commit
61831f42c6
@ -461,6 +461,7 @@ demo_clients = \
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weston-resizor \
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weston-eventdemo \
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weston-clickdot \
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weston-confine \
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weston-transformed \
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weston-fullscreen \
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weston-stacking \
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@ -669,6 +670,12 @@ weston_clickdot_SOURCES = \
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weston_clickdot_LDADD = libtoytoolkit.la
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weston_clickdot_CFLAGS = $(AM_CFLAGS) $(CLIENT_CFLAGS)
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weston_confine_SOURCES = \
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clients/confine.c \
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shared/helpers.h
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weston_confine_LDADD = libtoytoolkit.la
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weston_confine_CFLAGS = $(AM_CFLAGS) $(CLIENT_CFLAGS)
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weston_transformed_SOURCES = clients/transformed.c
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weston_transformed_LDADD = libtoytoolkit.la
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weston_transformed_CFLAGS = $(AM_CFLAGS) $(CLIENT_CFLAGS)
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331
clients/confine.c
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331
clients/confine.c
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@ -0,0 +1,331 @@
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/*
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* Copyright © 2010 Intel Corporation
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* Copyright © 2012 Collabora, Ltd.
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* Copyright © 2012 Jonas Ådahl
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.h>
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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 <cairo.h>
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#include <math.h>
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#include <assert.h>
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#include <sys/timerfd.h>
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#include <sys/epoll.h>
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#include <unistd.h>
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#include <linux/input.h>
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#include <wayland-client.h>
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#include "window.h"
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#include "shared/helpers.h"
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#include "shared/xalloc.h"
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struct confine {
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struct display *display;
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struct window *window;
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struct widget *widget;
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cairo_surface_t *buffer;
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struct {
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int32_t x, y;
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int32_t old_x, old_y;
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} line;
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int reset;
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struct input *cursor_timeout_input;
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int cursor_timeout_fd;
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struct task cursor_timeout_task;
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};
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static void
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draw_line(struct confine *confine, cairo_t *cr,
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struct rectangle *allocation)
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{
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cairo_t *bcr;
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cairo_surface_t *tmp_buffer = NULL;
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if (confine->reset) {
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tmp_buffer = confine->buffer;
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confine->buffer = NULL;
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confine->line.x = -1;
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confine->line.y = -1;
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confine->line.old_x = -1;
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confine->line.old_y = -1;
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confine->reset = 0;
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}
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if (confine->buffer == NULL) {
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confine->buffer =
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cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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allocation->width,
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allocation->height);
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bcr = cairo_create(confine->buffer);
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cairo_set_source_rgba(bcr, 0, 0, 0, 0);
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cairo_rectangle(bcr,
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0, 0,
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allocation->width, allocation->height);
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cairo_fill(bcr);
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}
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else
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bcr = cairo_create(confine->buffer);
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if (tmp_buffer) {
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cairo_set_source_surface(bcr, tmp_buffer, 0, 0);
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cairo_rectangle(bcr, 0, 0,
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allocation->width, allocation->height);
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cairo_clip(bcr);
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cairo_paint(bcr);
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cairo_surface_destroy(tmp_buffer);
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}
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if (confine->line.x != -1 && confine->line.y != -1) {
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if (confine->line.old_x != -1 &&
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confine->line.old_y != -1) {
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cairo_set_line_width(bcr, 2.0);
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cairo_set_source_rgb(bcr, 1, 1, 1);
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cairo_translate(bcr,
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-allocation->x, -allocation->y);
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cairo_move_to(bcr,
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confine->line.old_x,
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confine->line.old_y);
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cairo_line_to(bcr,
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confine->line.x,
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confine->line.y);
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cairo_stroke(bcr);
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}
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confine->line.old_x = confine->line.x;
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confine->line.old_y = confine->line.y;
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}
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cairo_destroy(bcr);
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cairo_set_source_surface(cr, confine->buffer,
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allocation->x, allocation->y);
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cairo_set_operator(cr, CAIRO_OPERATOR_ADD);
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cairo_rectangle(cr,
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allocation->x, allocation->y,
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allocation->width, allocation->height);
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cairo_clip(cr);
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cairo_paint(cr);
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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 confine *confine = data;
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cairo_surface_t *surface;
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cairo_t *cr;
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struct rectangle allocation;
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widget_get_allocation(confine->widget, &allocation);
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surface = window_get_surface(confine->window);
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cr = cairo_create(surface);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_rectangle(cr,
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allocation.x,
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allocation.y,
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allocation.width,
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allocation.height);
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cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
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cairo_fill(cr);
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draw_line(confine, cr, &allocation);
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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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keyboard_focus_handler(struct window *window,
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struct input *device, void *data)
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{
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struct confine *confine = data;
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window_schedule_redraw(confine->window);
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}
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static void
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key_handler(struct window *window, struct input *input, uint32_t time,
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uint32_t key, uint32_t sym,
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enum wl_keyboard_key_state state, void *data)
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{
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struct confine *confine = data;
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if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
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return;
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switch (sym) {
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case XKB_KEY_Escape:
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display_exit(confine->display);
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break;
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}
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}
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static void
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cursor_timeout_reset(struct confine *confine)
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{
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const long cursor_timeout = 500;
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struct itimerspec its;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 0;
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its.it_value.tv_sec = cursor_timeout / 1000;
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its.it_value.tv_nsec = (cursor_timeout % 1000) * 1000 * 1000;
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timerfd_settime(confine->cursor_timeout_fd, 0, &its, NULL);
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}
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static int
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motion_handler(struct widget *widget,
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struct input *input, uint32_t time,
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float x, float y, void *data)
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{
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struct confine *confine = data;
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confine->line.x = x;
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confine->line.y = y;
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window_schedule_redraw(confine->window);
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cursor_timeout_reset(confine);
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confine->cursor_timeout_input = input;
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return CURSOR_BLANK;
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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,
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void *data)
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{
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struct confine *confine = data;
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confine->reset = 1;
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}
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static void
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leave_handler(struct widget *widget,
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struct input *input, void *data)
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{
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struct confine *confine = data;
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confine->reset = 1;
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}
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static void
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cursor_timeout_func(struct task *task, uint32_t events)
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{
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struct confine *confine =
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container_of(task, struct confine, cursor_timeout_task);
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uint64_t exp;
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if (read(confine->cursor_timeout_fd, &exp, sizeof (uint64_t)) !=
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sizeof(uint64_t))
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abort();
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input_set_pointer_image(confine->cursor_timeout_input,
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CURSOR_LEFT_PTR);
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}
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static struct confine *
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confine_create(struct display *display)
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{
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struct confine *confine;
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confine = xzalloc(sizeof *confine);
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confine->window = window_create(display);
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confine->widget = window_frame_create(confine->window, confine);
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window_set_title(confine->window, "Wayland Confine");
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confine->display = display;
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confine->buffer = NULL;
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window_set_key_handler(confine->window, key_handler);
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window_set_user_data(confine->window, confine);
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window_set_keyboard_focus_handler(confine->window,
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keyboard_focus_handler);
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widget_set_redraw_handler(confine->widget, redraw_handler);
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widget_set_motion_handler(confine->widget, motion_handler);
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widget_set_resize_handler(confine->widget, resize_handler);
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widget_set_leave_handler(confine->widget, leave_handler);
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widget_schedule_resize(confine->widget, 500, 400);
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confine->line.x = -1;
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confine->line.y = -1;
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confine->line.old_x = -1;
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confine->line.old_y = -1;
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confine->reset = 0;
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confine->cursor_timeout_fd =
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timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
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confine->cursor_timeout_task.run = cursor_timeout_func;
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display_watch_fd(window_get_display(confine->window),
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confine->cursor_timeout_fd,
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EPOLLIN, &confine->cursor_timeout_task);
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return confine;
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}
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static void
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confine_destroy(struct confine *confine)
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{
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display_unwatch_fd(window_get_display(confine->window),
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confine->cursor_timeout_fd);
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close(confine->cursor_timeout_fd);
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if (confine->buffer)
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cairo_surface_destroy(confine->buffer);
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widget_destroy(confine->widget);
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window_destroy(confine->window);
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free(confine);
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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 display *display;
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struct confine *confine;
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display = display_create(&argc, argv);
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if (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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confine = confine_create(display);
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display_run(display);
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confine_destroy(confine);
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display_destroy(display);
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return 0;
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}
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