Zoom is a neat trick, but in its current form it's very hard to test and maintain. It also causes output damage to scale outside of the output's boundaries, which leads to an extra clipping step that's only necessary when zoom is enabled. Remove it to simplify desktop-shell and compositor. Signed-off-by: Derek Foreman <derek.foreman@collabora.com>dev
Derek Foreman
3 years ago
committed by
Daniel Stone
parent
dc3b349325
commit
66374d48f1
@ -1,184 +0,0 @@ |
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/*
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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 <libweston/libweston.h> |
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#include "backend.h" |
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#include "libweston-internal.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, |
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const struct timespec *time) |
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{ |
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if (animation->frame_counter <= 1) |
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output->zoom.spring_z.timestamp = *time; |
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weston_spring_update(&output->zoom.spring_z, time); |
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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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weston_output_disable_planes_decr(output); |
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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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if (!pointer) |
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return; |
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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 (!pointer || 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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weston_output_disable_planes_incr(output); |
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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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