1 files changed, 66 insertions, 0 deletions
diff --git a/native/webview/plat_support/draw_sw.h b/native/webview/plat_support/draw_sw.h
new file mode 100644
index 000000000000..7423e13bb8be
--- /dev/null
+++ b/native/webview/plat_support/draw_sw.h
@@ -0,0 +1,66 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+//******************************************************************************
+// This is a copy of the coresponding android_webview/public/browser header.
+// Any changes to the interface should be made there.
+//
+// The purpose of having the copy is twofold:
+//  - it removes the need to have Chromium sources present in the tree in order
+//    to build the plat_support library,
+//  - it captures API that the corresponding Android release supports.
+//******************************************************************************
+
+#ifndef ANDROID_WEBVIEW_PUBLIC_BROWSER_DRAW_SW_H_
+#define ANDROID_WEBVIEW_PUBLIC_BROWSER_DRAW_SW_H_
+
+#include <jni.h>
+#include <stddef.h>
+
+#ifndef __cplusplus
+#error "Can't mix C and C++ when using jni.h"
+#endif
+
+class SkCanvasState;
+class SkPicture;
+
+static const int kAwPixelInfoVersion = 3;
+
+// Holds the information required to implement the SW draw to system canvas.
+struct AwPixelInfo {
+  int version;          // The kAwPixelInfoVersion this struct was built with.
+  SkCanvasState* state; // The externalize state in skia format.
+  // NOTE: If you add more members, bump kAwPixelInfoVersion.
+};
+
+// Function that can be called to fish out the underlying native pixel data
+// from a Java canvas object, for optimized rendering path.
+// Returns the pixel info on success, which must be freed via a call to
+// AwReleasePixelsFunction, or NULL.
+typedef AwPixelInfo* (AwAccessPixelsFunction)(JNIEnv* env, jobject canvas);
+
+// Must be called to balance every *successful* call to AwAccessPixelsFunction
+// (i.e. that returned true).
+typedef void (AwReleasePixelsFunction)(AwPixelInfo* pixels);
+
+// Called to create an Android Picture object encapsulating a native SkPicture.
+typedef jobject (AwCreatePictureFunction)(JNIEnv* env, SkPicture* picture);
+
+// Method that returns the current Skia function.
+typedef void (SkiaVersionFunction)(int* major, int* minor, int* patch);
+
+// Called to verify if the Skia versions are compatible.
+typedef bool (AwIsSkiaVersionCompatibleFunction)(SkiaVersionFunction function);
+
+static const int kAwDrawSWFunctionTableVersion = 1;
+
+// "vtable" for the functions declared in this file. An instance must be set via
+// AwContents.setAwDrawSWFunctionTable
+struct AwDrawSWFunctionTable {
+  int version;
+  AwAccessPixelsFunction* access_pixels;
+  AwReleasePixelsFunction* release_pixels;
+};
+
+#endif  // ANDROID_WEBVIEW_PUBLIC_BROWSER_DRAW_SW_H_