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ShadowEffect: Dont use Gtk to draw shadows (#1867)

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Co-authored-by: Danielle Foré <danielle@elementary.io>
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Leonhard 2024-05-28 11:57:36 +02:00 committed by GitHub
parent fc3c22f9ca
commit f9e9eed71d
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9 changed files with 52 additions and 113 deletions
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67
data/gala.css
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@ -1,67 +0,0 @@
/*
* Copyright 2014 Gala Developers
* Copyright 2022-2023 elementary, Inc. (https://elementary.io)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http: *www.gnu.org/licenses/>.
*
* Authored by: Tom Beckmann
*/
.decoration {
border-radius: 4px 4px 0 0;
box-shadow:
0 0 0 1px alpha(#000, 0.3),
0 14px 20px rgba(0, 0, 0, 0.35),
0 10px 10px rgba(0, 0, 0, 0.22);
}
.window-clone.decoration {
border-radius: 0;
box-shadow:
0 0 0 1px alpha(#000, 0.3),
0 14px 20px rgba(0, 0, 0, 0.35),
0 10px 10px rgba(0, 0, 0, 0.22);
}
.workspace.decoration {
border-radius: 6px;
box-shadow:
0 0 0 1px alpha(#000, 0.2),
0 8px 10px 1px alpha(#000, 0.14),
0 3px 14px 2px alpha(#000, 0.12),
0 5px 5px -3px alpha(#000, 0.4);
}
.window-switcher.decoration {
border-radius: 9px;
box-shadow:
0 8px 10px 1px alpha(#000, 0.14),
0 3px 14px 2px alpha(#000, 0.12),
0 5px 5px -3px alpha(#000, 0.4);
}
.workspace-switcher.decoration {
border-radius: 6px;
box-shadow:
0 3px 4px alpha(#000, 0.25),
0 3px 3px -3px alpha(#000, 0.45);
}
.workspace-switcher-dnd.decoration {
border-radius: 6px;
box-shadow:
0 8px 10px 1px alpha(#000, 0.14),
0 3px 14px 2px alpha(#000, 0.12),
0 5px 5px -3px alpha(#000, 0.4);
}

1
data/gala.gresource.xml
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@ -21,7 +21,6 @@
<file alias="buttons/resize.svg" compressed="true" preprocess="xml-stripblanks">resize.svg</file>
</gresource>
<gresource prefix="/io/elementary/desktop/gala">
<file compressed="true">gala.css</file>
<file compressed="true">shaders/colorblindness-correction.vert</file>
<file compressed="true">shaders/monochrome.vert</file>
</gresource>

76
lib/ShadowEffect.vala
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@ -20,34 +20,43 @@ public class Gala.ShadowEffect : Clutter.Effect {
private static Gee.HashMap<string,Shadow> shadow_cache;
// Delay the style context creation at render stage as Gtk need to access
// the current display.
private static GLib.Once<Gtk.StyleContext> _style_context;
static construct {
shadow_cache = new Gee.HashMap<string,Shadow> ();
}
private static Gtk.StyleContext create_style_context () {
var style_path = new Gtk.WidgetPath ();
style_path.append_type (typeof (Gtk.Window));
var style_context = new Gtk.StyleContext ();
style_context.add_provider (Gala.Utils.get_gala_css (), Gtk.STYLE_PROVIDER_PRIORITY_FALLBACK);
style_context.add_class ("decoration");
style_context.set_path (style_path);
return style_context;
private string _css_class;
public string css_class {
get {
return _css_class;
}
public int shadow_size { get; construct; }
construct set {
_css_class = value;
switch (value) {
case "workspace-switcher":
shadow_size = 6;
break;
case "window":
shadow_size = 55;
break;
default:
shadow_size = 18;
break;
}
}
}
public float scale_factor { get; set; default = 1; }
public uint8 shadow_opacity { get; set; default = 255; }
public string? css_class { get; set; default = null; }
public int border_radius { get; set; default = 9;}
private int shadow_size;
private Cogl.Pipeline pipeline;
private string? current_key = null;
public ShadowEffect (int shadow_size) {
Object (shadow_size: shadow_size);
public ShadowEffect (string css_class = "") {
Object (css_class: css_class);
}
construct {
@ -60,7 +69,7 @@ public class Gala.ShadowEffect : Clutter.Effect {
}
}
private Cogl.Texture? get_shadow (Cogl.Context context, int width, int height, int shadow_size) {
private Cogl.Texture? get_shadow (Cogl.Context context, int width, int height, int shadow_size, int shadow_spread = 0) {
var old_key = current_key;
current_key = "%ix%i:%i".printf (width, height, shadow_size);
if (old_key == current_key) {
@ -77,26 +86,25 @@ public class Gala.ShadowEffect : Clutter.Effect {
return shadow.texture;
}
// fill a new texture for this size
var buffer = new Drawing.BufferSurface (width, height);
Drawing.Utilities.cairo_rounded_rectangle (
buffer.context,
shadow_size - shadow_spread,
shadow_size - shadow_spread,
width - shadow_size * 2 + shadow_spread * 2,
height - shadow_size * 2 + shadow_spread * 2,
border_radius
);
buffer.context.set_source_rgba (0, 0, 0, 0.7);
buffer.context.fill ();
buffer.exponential_blur (shadow_size / 2);
var surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, width, height);
var cr = new Cairo.Context (surface);
cr.set_source_rgba (0, 0, 0, 0);
cr.fill ();
cr.set_operator (Cairo.Operator.OVER);
cr.save ();
cr.scale (scale_factor, scale_factor);
unowned var style_context = _style_context.once (create_style_context);
style_context.save ();
if (css_class != null) {
style_context.add_class (css_class);
}
style_context.set_scale ((int) Math.round (scale_factor));
var size = shadow_size * scale_factor;
style_context.render_background (cr, shadow_size, shadow_size, (width - size * 2) / scale_factor, (height - size * 2) / scale_factor);
style_context.restore ();
cr.restore ();
cr.set_source_surface (buffer.surface, 0, 0);
cr.paint ();
try {
@ -139,7 +147,7 @@ public class Gala.ShadowEffect : Clutter.Effect {
pipeline.set_color (alpha);
context.get_framebuffer ().draw_rectangle (pipeline, bounding_box.x1, bounding_box.y1, bounding_box.x2, bounding_box.y2);
context.get_framebuffer ().draw_rectangle (pipeline, bounding_box.x1, bounding_box.y1 + shadow_size / 4, bounding_box.x2, bounding_box.y2 + shadow_size / 4);
actor.continue_paint (context);
}

2
plugins/pip/PopupWindow.vala
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@ -86,7 +86,7 @@ public class Gala.Plugins.PIP.PopupWindow : Clutter.Actor {
container = new Clutter.Actor ();
container.reactive = true;
container.set_scale (0.35f, 0.35f);
container.add_effect (new ShadowEffect (55) { css_class = "window-clone" });
container.add_effect (new ShadowEffect ("window") { border_radius = 6});
container.add_child (clone);
container.add_action (move_action);

3
src/Widgets/IconGroup.vala
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@ -232,7 +232,8 @@ namespace Gala {
InternalUtils.scale_to_int (5, scale_factor)
);
var shadow_effect = new ShadowEffect (40) {
var shadow_effect = new ShadowEffect () {
border_radius = InternalUtils.scale_to_int (5, scale_factor),
scale_factor = scale_factor
};

2
src/Widgets/WindowClone.vala
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@ -235,7 +235,7 @@ public class Gala.WindowClone : Clutter.Actor {
if (window.fullscreen || window.maximized_horizontally && window.maximized_vertically) {
if (shadow_effect == null) {
shadow_effect = new ShadowEffect (55) { css_class = "window-clone" };
shadow_effect = new ShadowEffect ("window");
shadow_opacity = 0;
clone.add_effect_with_name ("shadow", shadow_effect);
}

6
src/Widgets/WindowSwitcher/WindowSwitcher.vala
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@ -84,9 +84,9 @@ public class Gala.WindowSwitcher : CanvasActor {
orientation = VERTICAL
};
shadow_effect = new ShadowEffect (40) {
shadow_opacity = 200,
css_class = "window-switcher"
shadow_effect = new ShadowEffect ("window-switcher") {
border_radius = InternalUtils.scale_to_int (9, scaling_factor),
shadow_opacity = 100
};
add_effect (shadow_effect);

4
src/Widgets/WorkspaceClone.vala
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@ -40,9 +40,7 @@ namespace Gala {
var primary = wm.get_display ().get_primary_monitor ();
var monitor_geom = wm.get_display ().get_monitor_geometry (primary);
var effect = new ShadowEffect (40) {
css_class = "workspace"
};
var effect = new ShadowEffect ("workspace");
add_effect (effect);
reactive = true;

4
src/WindowManager.vala
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@ -1923,12 +1923,12 @@ namespace Gala {
((BackgroundContainer) background_group).set_black_background (false);
wallpaper = new Clutter.Clone (background_group);
}
wallpaper.add_effect (new Gala.ShadowEffect (40) { css_class = "workspace" });
wallpaper.add_effect (new Gala.ShadowEffect ("workspace"));
tmp_actors.prepend (wallpaper);
if (workspace_to != null) {
wallpaper_clone = new Clutter.Clone (wallpaper);
wallpaper_clone.add_effect (new Gala.ShadowEffect (40) { css_class = "workspace" });
wallpaper_clone.add_effect (new Gala.ShadowEffect ("workspace"));
tmp_actors.prepend (wallpaper_clone);
}