mirror of
https://gitlab.freedesktop.org/wayland/weston
synced 2024-09-06 18:05:39 +00:00
![Jussi Kukkonen](/assets/img/avatar_default.png)
Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com> Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
179 lines
5.2 KiB
C
179 lines
5.2 KiB
C
/*
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* Copyright © 2012 Scott Moreau
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <assert.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "compositor.h"
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#include "text-cursor-position-server-protocol.h"
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#include "shared/helpers.h"
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static void
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weston_zoom_frame_z(struct weston_animation *animation,
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struct weston_output *output, uint32_t msecs)
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{
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if (animation->frame_counter <= 1)
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output->zoom.spring_z.timestamp = msecs;
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weston_spring_update(&output->zoom.spring_z, msecs);
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if (output->zoom.spring_z.current > output->zoom.max_level)
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output->zoom.spring_z.current = output->zoom.max_level;
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else if (output->zoom.spring_z.current < 0.0)
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output->zoom.spring_z.current = 0.0;
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if (weston_spring_done(&output->zoom.spring_z)) {
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if (output->zoom.active && output->zoom.level <= 0.0) {
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output->zoom.active = false;
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output->zoom.seat = NULL;
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output->disable_planes--;
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wl_list_remove(&output->zoom.motion_listener.link);
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}
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output->zoom.spring_z.current = output->zoom.level;
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wl_list_remove(&animation->link);
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wl_list_init(&animation->link);
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}
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output->dirty = 1;
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weston_output_damage(output);
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}
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static void
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zoom_area_center_from_point(struct weston_output *output,
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double *x, double *y)
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{
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float level = output->zoom.spring_z.current;
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*x = (*x - output->x) * level + output->width / 2.;
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*y = (*y - output->y) * level + output->height / 2.;
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}
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static void
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weston_output_update_zoom_transform(struct weston_output *output)
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{
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double x = output->zoom.current.x; /* global pointer coords */
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double y = output->zoom.current.y;
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float level;
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level = output->zoom.spring_z.current;
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if (!output->zoom.active || level > output->zoom.max_level ||
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level == 0.0f)
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return;
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zoom_area_center_from_point(output, &x, &y);
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output->zoom.trans_x = x - output->width / 2;
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output->zoom.trans_y = y - output->height / 2;
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if (output->zoom.trans_x < 0)
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output->zoom.trans_x = 0;
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if (output->zoom.trans_y < 0)
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output->zoom.trans_y = 0;
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if (output->zoom.trans_x > level * output->width)
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output->zoom.trans_x = level * output->width;
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if (output->zoom.trans_y > level * output->height)
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output->zoom.trans_y = level * output->height;
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}
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static void
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weston_zoom_transition(struct weston_output *output)
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{
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if (output->zoom.level != output->zoom.spring_z.current) {
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output->zoom.spring_z.target = output->zoom.level;
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if (wl_list_empty(&output->zoom.animation_z.link)) {
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output->zoom.animation_z.frame_counter = 0;
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wl_list_insert(output->animation_list.prev,
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&output->zoom.animation_z.link);
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}
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}
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output->dirty = 1;
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weston_output_damage(output);
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}
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WL_EXPORT void
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weston_output_update_zoom(struct weston_output *output)
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{
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struct weston_seat *seat = output->zoom.seat;
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struct weston_pointer *pointer = weston_seat_get_pointer(seat);
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assert(output->zoom.active);
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output->zoom.current.x = wl_fixed_to_double(pointer->x);
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output->zoom.current.y = wl_fixed_to_double(pointer->y);
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weston_zoom_transition(output);
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weston_output_update_zoom_transform(output);
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}
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static void
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motion(struct wl_listener *listener, void *data)
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{
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struct weston_output_zoom *zoom =
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container_of(listener, struct weston_output_zoom, motion_listener);
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struct weston_output *output =
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container_of(zoom, struct weston_output, zoom);
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weston_output_update_zoom(output);
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}
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WL_EXPORT void
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weston_output_activate_zoom(struct weston_output *output,
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struct weston_seat *seat)
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{
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struct weston_pointer *pointer = weston_seat_get_pointer(seat);
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if (output->zoom.active)
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return;
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output->zoom.active = true;
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output->zoom.seat = seat;
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output->disable_planes++;
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wl_signal_add(&pointer->motion_signal,
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&output->zoom.motion_listener);
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}
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WL_EXPORT void
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weston_output_init_zoom(struct weston_output *output)
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{
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output->zoom.active = false;
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output->zoom.seat = NULL;
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output->zoom.increment = 0.07;
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output->zoom.max_level = 0.95;
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output->zoom.level = 0.0;
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output->zoom.trans_x = 0.0;
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output->zoom.trans_y = 0.0;
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weston_spring_init(&output->zoom.spring_z, 250.0, 0.0, 0.0);
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output->zoom.spring_z.friction = 1000;
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output->zoom.animation_z.frame = weston_zoom_frame_z;
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wl_list_init(&output->zoom.animation_z.link);
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output->zoom.motion_listener.notify = motion;
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}
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