[svg] Add light source classes and lighting-color pres attr
https://www.w3.org/TR/SVG11/filters.html#LightSourceDefinitions
The three classes represent light source elements that will eventually
be used for feSpecularLighting and feDiffuseLighting. Currently they are
unused.
Also added the (currently unused) lighting-color presentation attribute.
Bug: skia:10841
Change-Id: Ic7824671662b8cd88cf627affc54173d5e881b7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/359557
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
diff --git a/modules/svg/include/SkSVGFeLightSource.h b/modules/svg/include/SkSVGFeLightSource.h
new file mode 100644
index 0000000..75f0074
--- /dev/null
+++ b/modules/svg/include/SkSVGFeLightSource.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2021 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSVGFeLightSource_DEFINED
+#define SkSVGFeLightSource_DEFINED
+
+#include "modules/svg/include/SkSVGHiddenContainer.h"
+#include "modules/svg/include/SkSVGTypes.h"
+
+class SkSVGFeLightSource : public SkSVGHiddenContainer {
+public:
+ void appendChild(sk_sp<SkSVGNode>) final {
+ SkDebugf("cannot append child nodes to an SVG light source.\n");
+ }
+
+protected:
+ explicit SkSVGFeLightSource(SkSVGTag tag) : INHERITED(tag) {}
+
+private:
+ using INHERITED = SkSVGHiddenContainer;
+};
+
+class SkSVGFeDistantLight final : public SkSVGFeLightSource {
+public:
+ static sk_sp<SkSVGFeDistantLight> Make() {
+ return sk_sp<SkSVGFeDistantLight>(new SkSVGFeDistantLight());
+ }
+
+ SVG_ATTR(Azimuth , SkSVGNumberType, 0)
+ SVG_ATTR(Elevation, SkSVGNumberType, 0)
+
+private:
+ SkSVGFeDistantLight() : INHERITED(SkSVGTag::kFeDistantLight) {}
+
+ bool parseAndSetAttribute(const char*, const char*) override;
+
+ using INHERITED = SkSVGFeLightSource;
+};
+
+class SkSVGFePointLight final : public SkSVGFeLightSource {
+public:
+ static sk_sp<SkSVGFePointLight> Make() {
+ return sk_sp<SkSVGFePointLight>(new SkSVGFePointLight());
+ }
+
+ SVG_ATTR(X, SkSVGNumberType, 0)
+ SVG_ATTR(Y, SkSVGNumberType, 0)
+ SVG_ATTR(Z, SkSVGNumberType, 0)
+
+private:
+ SkSVGFePointLight() : INHERITED(SkSVGTag::kFePointLight) {}
+
+ bool parseAndSetAttribute(const char*, const char*) override;
+
+ using INHERITED = SkSVGFeLightSource;
+};
+
+class SkSVGFeSpotLight final : public SkSVGFeLightSource {
+public:
+ static sk_sp<SkSVGFeSpotLight> Make() {
+ return sk_sp<SkSVGFeSpotLight>(new SkSVGFeSpotLight());
+ }
+
+ SVG_ATTR(X , SkSVGNumberType, 0)
+ SVG_ATTR(Y , SkSVGNumberType, 0)
+ SVG_ATTR(Z , SkSVGNumberType, 0)
+ SVG_ATTR(PointsAtX , SkSVGNumberType, 0)
+ SVG_ATTR(PointsAtY , SkSVGNumberType, 0)
+ SVG_ATTR(PointsAtZ , SkSVGNumberType, 0)
+ SVG_ATTR(SpecularExponent, SkSVGNumberType, 1)
+
+ SVG_OPTIONAL_ATTR(LimitingConeAngle, SkSVGNumberType)
+
+private:
+ SkSVGFeSpotLight() : INHERITED(SkSVGTag::kFeSpotLight) {}
+
+ bool parseAndSetAttribute(const char*, const char*) override;
+
+ using INHERITED = SkSVGFeLightSource;
+};
+
+#endif // SkSVGFeLightSource_DEFINED