gala/lib/CloseButton.vala
2024-02-13 09:58:50 -08:00

136 lines
4.1 KiB
Vala

/*
* Copyright 2024 elementary, Inc. (https://elementary.io)
* SPDX-License-Identifier: GPL-3.0-or-later
*/
public class Gala.CloseButton : Clutter.Actor {
private const uint ANIMATION_DURATION = 100;
private static Gee.HashMap<int, Gdk.Pixbuf?> close_pixbufs;
public signal void triggered (uint32 timestamp);
public float scale { get; construct set; }
// used to avoid changing hitbox of the button
private Clutter.Actor pixbuf_actor;
private bool is_pressed = false;
public CloseButton (float scale) {
Object (scale: scale);
}
static construct {
close_pixbufs = new Gee.HashMap<int, Gdk.Pixbuf?> ();
}
construct {
reactive = true;
pixbuf_actor = new Clutter.Actor () {
pivot_point = { 0.5f, 0.5f }
};
add_child (pixbuf_actor);
var pixbuf = get_close_button_pixbuf (scale);
if (pixbuf != null) {
try {
var image = new Clutter.Image ();
Cogl.PixelFormat pixel_format = (pixbuf.get_has_alpha () ? Cogl.PixelFormat.RGBA_8888 : Cogl.PixelFormat.RGB_888);
image.set_data (pixbuf.get_pixels (), pixel_format, pixbuf.width, pixbuf.height, pixbuf.rowstride);
pixbuf_actor.set_content (image);
pixbuf_actor.set_size (pixbuf.width, pixbuf.height);
set_size (pixbuf.width, pixbuf.height);
} catch (Error e) {
create_error_texture ();
}
} else {
create_error_texture ();
}
}
private static Gdk.Pixbuf? get_close_button_pixbuf (float scale) {
var height = Utils.scale_to_int (36, scale);
if (close_pixbufs[height] == null) {
try {
close_pixbufs[height] = new Gdk.Pixbuf.from_resource_at_scale (
Config.RESOURCEPATH + "/buttons/close.svg",
-1,
height,
true
);
} catch (Error e) {
critical (e.message);
return null;
}
}
return close_pixbufs[height];
}
private void create_error_texture () {
// we'll just make this red so there's at least something as an
// indicator that loading failed. Should never happen and this
// works as good as some weird fallback-image-failed-to-load pixbuf
critical ("Could not create close button");
var size = Utils.scale_to_int (36, scale);
pixbuf_actor.set_size (size, size);
pixbuf_actor.background_color = { 255, 0, 0, 255 };
}
#if HAS_MUTTER45
public override bool button_press_event (Clutter.Event e) {
#else
public override bool button_press_event (Clutter.ButtonEvent e) {
#endif
var estimated_duration = (uint) (ANIMATION_DURATION * (scale_x - 0.8) / 0.2);
pixbuf_actor.save_easing_state ();
pixbuf_actor.set_easing_duration (estimated_duration);
pixbuf_actor.set_easing_mode (Clutter.AnimationMode.EASE_IN_OUT);
pixbuf_actor.set_scale (0.8, 0.8);
pixbuf_actor.restore_easing_state ();
is_pressed = true;
return Clutter.EVENT_STOP;
}
#if HAS_MUTTER45
public override bool button_release_event (Clutter.Event e) {
#else
public override bool button_release_event (Clutter.ButtonEvent e) {
#endif
reset_scale ();
if (is_pressed) {
triggered (e.get_time ());
is_pressed = false;
}
return Clutter.EVENT_STOP;
}
#if HAS_MUTTER45
public override bool leave_event (Clutter.Event event) {
#else
public override bool leave_event (Clutter.CrossingEvent event) {
#endif
reset_scale ();
is_pressed = false;
return Clutter.EVENT_PROPAGATE;
}
private void reset_scale () {
var estimated_duration = (uint) (ANIMATION_DURATION * (1.0 - scale_x) / 0.2);
pixbuf_actor.save_easing_state ();
pixbuf_actor.set_easing_duration (estimated_duration);
pixbuf_actor.set_easing_mode (Clutter.AnimationMode.EASE_IN_OUT);
pixbuf_actor.set_scale (1.0, 1.0);
pixbuf_actor.restore_easing_state ();
}
}