LibWeb+LibGfx: Refactor CSS filters into LibGfx

CSS filters work similarly to canvas filters, so it makes sense to have Gfx::Filter that can be used by both libraries in an analogous way as Gfx::Color.
Author: https://github.com/ananas-dev Commit: 9fd1223992 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2876 Reviewed-by: https://github.com/kalenikaliaksandr Reviewed-by: https://github.com/shlyakpavel
2025-06-09 09:34:57 +09:00 · 2024-12-18 11:34:25 +01:00 · 2024-12-18 11:34:25 +01:00 · 9fd1223992 · 2024-12-18 17:55:46 +00:00
commit 9fd1223992
parent bc971a4ccc
18 changed files with 365 additions and 367 deletions
--- a/Libraries/LibGfx/Filter.h
+++ b/Libraries/LibGfx/Filter.h
@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2024, Lucien Fiorini <lucienfiorini@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Variant.h>
+#include <LibGfx/Color.h>
+
+namespace Gfx {
+
+struct BlurFilter {
+    float radius;
+};
+
+struct DropShadowFilter {
+    float offset_x;
+    float offset_y;
+    float radius;
+    Gfx::Color color;
+};
+
+struct HueRotateFilter {
+    float angle_degrees;
+};
+
+struct ColorFilter {
+    enum class Type {
+        Brightness,
+        Contrast,
+        Grayscale,
+        Invert,
+        Opacity,
+        Saturate,
+        Sepia
+    } type;
+    float amount;
+};
+
+using Filter = Variant<BlurFilter, DropShadowFilter, HueRotateFilter, ColorFilter>;
+}