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/*
* Copyright © 2012 Scott Moreau
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#include <stdlib.h>
#include "compositor.h"
#include "text-cursor-position-server-protocol.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 = 0;
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 struct weston_seat *
weston_zoom_pick_seat(struct weston_compositor *compositor)
{
return container_of(compositor->seat_list.next,
struct weston_seat, link);
}
static void
weston_zoom_frame_xy(struct weston_animation *animation,
struct weston_output *output, uint32_t msecs)
{
struct weston_seat *seat = weston_zoom_pick_seat(output->compositor);
wl_fixed_t x, y;
if (animation->frame_counter <= 1)
output->zoom.spring_xy.timestamp = msecs;
weston_spring_update(&output->zoom.spring_xy, msecs);
x = output->zoom.from.x - ((output->zoom.from.x - output->zoom.to.x) *
output->zoom.spring_xy.current);
y = output->zoom.from.y - ((output->zoom.from.y - output->zoom.to.y) *
output->zoom.spring_xy.current);
output->zoom.current.x = x;
output->zoom.current.y = y;
if (weston_spring_done(&output->zoom.spring_xy)) {
output->zoom.spring_xy.current = output->zoom.spring_xy.target;
output->zoom.current.x = seat->pointer->x;
output->zoom.current.y = seat->pointer->y;
wl_list_remove(&animation->link);
wl_list_init(&animation->link);
}
output->dirty = 1;
weston_output_damage(output);
}
static void
zoom_area_center_from_pointer(struct weston_output *output,
wl_fixed_t *x, wl_fixed_t *y)
{
float level = output->zoom.spring_z.current;
wl_fixed_t offset_x = wl_fixed_from_int(output->x);
wl_fixed_t offset_y = wl_fixed_from_int(output->y);
wl_fixed_t w = wl_fixed_from_int(output->width);
wl_fixed_t h = wl_fixed_from_int(output->height);
*x -= ((((*x - offset_x) / (float) w) - 0.5) * (w * (1.0 - level)));
*y -= ((((*y - offset_y) / (float) h) - 0.5) * (h * (1.0 - level)));
}
static void
weston_output_update_zoom_transform(struct weston_output *output)
{
float global_x, global_y;
wl_fixed_t x = output->zoom.current.x;
wl_fixed_t y = output->zoom.current.y;
float trans_min, trans_max;
float ratio, level;
level = output->zoom.spring_z.current;
ratio = 1 / level;
if (!output->zoom.active || level > output->zoom.max_level ||
level == 0.0f)
return;
if (wl_list_empty(&output->zoom.animation_xy.link))
zoom_area_center_from_pointer(output, &x, &y);
global_x = wl_fixed_to_double(x);
global_y = wl_fixed_to_double(y);
output->zoom.trans_x =
((((global_x - output->x) / output->width) *
(level * 2)) - level) * ratio;
output->zoom.trans_y =
((((global_y - output->y) / output->height) *
(level * 2)) - level) * ratio;
trans_max = level * 2 - level;
trans_min = -trans_max;
/* Clip zoom area to output */
if (output->zoom.trans_x > trans_max)
output->zoom.trans_x = trans_max;
else if (output->zoom.trans_x < trans_min)
output->zoom.trans_x = trans_min;
if (output->zoom.trans_y > trans_max)
output->zoom.trans_y = trans_max;
else if (output->zoom.trans_y < trans_min)
output->zoom.trans_y = trans_min;
}
static void
weston_zoom_transition(struct weston_output *output, wl_fixed_t x, wl_fixed_t y)
{
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 = weston_zoom_pick_seat(output->compositor);
wl_fixed_t x = seat->pointer->x;
wl_fixed_t y = seat->pointer->y;
zoom_area_center_from_pointer(output, &x, &y);
if (wl_list_empty(&output->zoom.animation_xy.link)) {
output->zoom.current.x = seat->pointer->x;
output->zoom.current.y = seat->pointer->y;
} else {
output->zoom.to.x = x;
output->zoom.to.y = y;
}
weston_zoom_transition(output, x, y);
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 = weston_zoom_pick_seat(output->compositor);
if (output->zoom.active)
return;
output->zoom.active = 1;
output->disable_planes++;
wl_signal_add(&seat->pointer->motion_signal,
&output->zoom.motion_listener);
}
WL_EXPORT void
weston_output_init_zoom(struct weston_output *output)
{
output->zoom.active = 0;
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);
weston_spring_init(&output->zoom.spring_xy, 250.0, 0.0, 0.0);
output->zoom.spring_xy.friction = 1000;
output->zoom.animation_xy.frame = weston_zoom_frame_xy;
wl_list_init(&output->zoom.animation_xy.link);
output->zoom.motion_listener.notify = motion;
}
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