Add transform matrix to InputWindowHandle.

Added the transform matrix from WindowInfo native to the Java side
InputWindowHandle. This is to allow clients that register a
WindowInfoListener to translate the window's screen coordinates to
window space.

Test: Transform is now sent to WindowInfoListener
Bug: 188792659
Change-Id: Ifba8488ff470d3c6c8066e23b871c3d541cff0a1

5 files changed, 28 insertions, 0 deletions

diff --git a/libs/hwui/apex/android_matrix.cpp b/libs/hwui/apex/android_matrix.cpp
index 693b22b62663..04ac3cf0ebc8 100644
--- a/libs/hwui/apex/android_matrix.cpp
+++ b/libs/hwui/apex/android_matrix.cpp
@@ -35,3 +35,10 @@ bool AMatrix_getContents(JNIEnv* env, jobject matrixObj, float values[9]) {
     }
     return false;
 }
+
+jobject AMatrix_newInstance(JNIEnv* env, float values[9]) {
+    jobject matrixObj = android::android_graphics_Matrix_newInstance(env);
+    SkMatrix* m = android::android_graphics_Matrix_getSkMatrix(env, matrixObj);
+    m->set9(values);
+    return matrixObj;
+}
diff --git a/libs/hwui/apex/include/android/graphics/matrix.h b/libs/hwui/apex/include/android/graphics/matrix.h
index 987ad13f7635..5705ba485ba3 100644
--- a/libs/hwui/apex/include/android/graphics/matrix.h
+++ b/libs/hwui/apex/include/android/graphics/matrix.h
@@ -34,6 +34,16 @@ __BEGIN_DECLS
  */
 ANDROID_API bool AMatrix_getContents(JNIEnv* env, jobject matrixObj, float values[9]);
 
+/**
+ * Returns a new Matrix jobject that contains the values passed in as initial values.
+ * @param values The 9 values of the 3x3 matrix in the following order.
+ *               values[0] = scaleX  values[1] = skewX   values[2] = transX
+ *               values[3] = skewY   values[4] = scaleY  values[5] = transY
+ *               values[6] = persp0  values[7] = persp1  values[8] = persp2
+ * @return The matrix jobject
+ */
+ANDROID_API jobject AMatrix_newInstance(JNIEnv* env, float values[9]);
+
 __END_DECLS
 
 #endif // ANDROID_GRAPHICS_MATRIX_H
diff --git a/libs/hwui/jni/android_graphics_Matrix.cpp b/libs/hwui/jni/android_graphics_Matrix.cpp
index 7338ef24cb58..cf6702e45fff 100644
--- a/libs/hwui/jni/android_graphics_Matrix.cpp
+++ b/libs/hwui/jni/android_graphics_Matrix.cpp
@@ -378,13 +378,17 @@ static const JNINativeMethod methods[] = {
     {"nEquals", "(JJ)Z", (void*) SkMatrixGlue::equals}
 };
 
+static jclass sClazz;
 static jfieldID sNativeInstanceField;
+static jmethodID sCtor;
 
 int register_android_graphics_Matrix(JNIEnv* env) {
     int result = RegisterMethodsOrDie(env, "android/graphics/Matrix", methods, NELEM(methods));
 
     jclass clazz = FindClassOrDie(env, "android/graphics/Matrix");
+    sClazz = MakeGlobalRefOrDie(env, clazz);
     sNativeInstanceField = GetFieldIDOrDie(env, clazz, "native_instance", "J");
+    sCtor = GetMethodIDOrDie(env, clazz, "<init>", "()V");
 
     return result;
 }
@@ -393,4 +397,7 @@ SkMatrix* android_graphics_Matrix_getSkMatrix(JNIEnv* env, jobject matrixObj) {
     return reinterpret_cast<SkMatrix*>(env->GetLongField(matrixObj, sNativeInstanceField));
 }
 
+jobject android_graphics_Matrix_newInstance(JNIEnv* env) {
+    return env->NewObject(sClazz, sCtor);
+}
 }
diff --git a/libs/hwui/jni/android_graphics_Matrix.h b/libs/hwui/jni/android_graphics_Matrix.h
index fe90d2ef945d..79de48b46954 100644
--- a/libs/hwui/jni/android_graphics_Matrix.h
+++ b/libs/hwui/jni/android_graphics_Matrix.h
@@ -25,6 +25,9 @@ namespace android {
 /* Gets the underlying SkMatrix from a Matrix object. */
 SkMatrix* android_graphics_Matrix_getSkMatrix(JNIEnv* env, jobject matrixObj);
 
+/* Creates a new Matrix java object. */
+jobject android_graphics_Matrix_newInstance(JNIEnv* env);
+
 } // namespace android
 
 #endif // _ANDROID_GRAPHICS_MATRIX_H_
diff --git a/libs/hwui/libhwui.map.txt b/libs/hwui/libhwui.map.txt
index 73de0d12a60b..77b8a44d85a1 100644
--- a/libs/hwui/libhwui.map.txt
+++ b/libs/hwui/libhwui.map.txt
@@ -28,6 +28,7 @@ LIBHWUI {
     register_android_graphics_GraphicsStatsService;
     zygote_preload_graphics;
     AMatrix_getContents;
+    AMatrix_newInstance;
     APaint_createPaint;
     APaint_destroyPaint;
     APaint_setBlendMode;