weston/libweston/zoom.c
Pekka Paalanen b5e3ea218b Rename src/ to libweston/
This clarifies what is supposed to be the libweston code.

v2: screen-share.c is already in compositor/ instead.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Tested-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Tested-by: Benoit Gschwind <gschwind@gnu-log.net>
Acked-by: Benoit Gschwind <gschwind@gnu-log.net>
[Pekka: rebased]
2016-06-23 17:44:54 +03:00

178 lines
5.2 KiB
C

/*
* Copyright © 2012 Scott Moreau
*
* 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 <assert.h>
#include <stdlib.h>
#include <stdbool.h>
#include "compositor.h"
#include "text-cursor-position-server-protocol.h"
#include "shared/helpers.h"
static void
weston_zoom_frame_z(struct weston_animation *animation,
struct weston_output *output, uint32_t msecs)
{
if (animation->frame_counter <= 1)
output->zoom.spring_z.timestamp = msecs;
weston_spring_update(&output->zoom.spring_z, msecs);
if (output->zoom.spring_z.current > output->zoom.max_level)
output->zoom.spring_z.current = output->zoom.max_level;
else if (output->zoom.spring_z.current < 0.0)
output->zoom.spring_z.current = 0.0;
if (weston_spring_done(&output->zoom.spring_z)) {
if (output->zoom.active && output->zoom.level <= 0.0) {
output->zoom.active = false;
output->zoom.seat = NULL;
output->disable_planes--;
wl_list_remove(&output->zoom.motion_listener.link);
}
output->zoom.spring_z.current = output->zoom.level;
wl_list_remove(&animation->link);
wl_list_init(&animation->link);
}
output->dirty = 1;
weston_output_damage(output);
}
static void
zoom_area_center_from_point(struct weston_output *output,
double *x, double *y)
{
float level = output->zoom.spring_z.current;
*x = (*x - output->x) * level + output->width / 2.;
*y = (*y - output->y) * level + output->height / 2.;
}
static void
weston_output_update_zoom_transform(struct weston_output *output)
{
double x = output->zoom.current.x; /* global pointer coords */
double y = output->zoom.current.y;
float level;
level = output->zoom.spring_z.current;
if (!output->zoom.active || level > output->zoom.max_level ||
level == 0.0f)
return;
zoom_area_center_from_point(output, &x, &y);
output->zoom.trans_x = x - output->width / 2;
output->zoom.trans_y = y - output->height / 2;
if (output->zoom.trans_x < 0)
output->zoom.trans_x = 0;
if (output->zoom.trans_y < 0)
output->zoom.trans_y = 0;
if (output->zoom.trans_x > level * output->width)
output->zoom.trans_x = level * output->width;
if (output->zoom.trans_y > level * output->height)
output->zoom.trans_y = level * output->height;
}
static void
weston_zoom_transition(struct weston_output *output)
{
if (output->zoom.level != output->zoom.spring_z.current) {
output->zoom.spring_z.target = output->zoom.level;
if (wl_list_empty(&output->zoom.animation_z.link)) {
output->zoom.animation_z.frame_counter = 0;
wl_list_insert(output->animation_list.prev,
&output->zoom.animation_z.link);
}
}
output->dirty = 1;
weston_output_damage(output);
}
WL_EXPORT void
weston_output_update_zoom(struct weston_output *output)
{
struct weston_seat *seat = output->zoom.seat;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
assert(output->zoom.active);
output->zoom.current.x = wl_fixed_to_double(pointer->x);
output->zoom.current.y = wl_fixed_to_double(pointer->y);
weston_zoom_transition(output);
weston_output_update_zoom_transform(output);
}
static void
motion(struct wl_listener *listener, void *data)
{
struct weston_output_zoom *zoom =
container_of(listener, struct weston_output_zoom, motion_listener);
struct weston_output *output =
container_of(zoom, struct weston_output, zoom);
weston_output_update_zoom(output);
}
WL_EXPORT void
weston_output_activate_zoom(struct weston_output *output,
struct weston_seat *seat)
{
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
if (output->zoom.active)
return;
output->zoom.active = true;
output->zoom.seat = seat;
output->disable_planes++;
wl_signal_add(&pointer->motion_signal,
&output->zoom.motion_listener);
}
WL_EXPORT void
weston_output_init_zoom(struct weston_output *output)
{
output->zoom.active = false;
output->zoom.seat = NULL;
output->zoom.increment = 0.07;
output->zoom.max_level = 0.95;
output->zoom.level = 0.0;
output->zoom.trans_x = 0.0;
output->zoom.trans_y = 0.0;
weston_spring_init(&output->zoom.spring_z, 250.0, 0.0, 0.0);
output->zoom.spring_z.friction = 1000;
output->zoom.animation_z.frame = weston_zoom_frame_z;
wl_list_init(&output->zoom.animation_z.link);
output->zoom.motion_listener.notify = motion;
}