Isolate SpriteIcon into its own file.

This is to isolate differences between internal master and AOSP so that
the open source intern can work on a relatively new project.

It also isolates a divergent piece of code into SpriteIcon.cpp.

Bug: None
Test: Pointer icons in ApiDemos still work.
Change-Id: I1bf8f23411ad7170de2497d6fee0f70b015e9b5f
Merged-In: I1bf8f23411ad7170de2497d6fee0f70b015e9b5f
(cherry picked from commit 7e3457e593f417eb7a5a55d301b3d5f5dd1debdf)

1 files changed, 60 insertions, 0 deletions

diff --git a/libs/input/SpriteIcon.cpp b/libs/input/SpriteIcon.cpp
new file mode 100644
index 000000000000..b7e51e22a214
--- /dev/null
+++ b/libs/input/SpriteIcon.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SpriteIcon.h"
+
+#include <android/graphics/bitmap.h>
+#include <android/graphics/canvas.h>
+#include <android/graphics/paint.h>
+#include <android/native_window.h>
+#include <log/log.h>
+
+namespace android {
+
+bool SpriteIcon::draw(sp<Surface> surface) const {
+    ANativeWindow_Buffer outBuffer;
+    status_t status = surface->lock(&outBuffer, NULL);
+    if (status) {
+        ALOGE("Error %d locking sprite surface before drawing.", status);
+        return false;
+    }
+
+    graphics::Paint paint;
+    paint.setBlendMode(ABLEND_MODE_SRC);
+
+    graphics::Canvas canvas(outBuffer, (int32_t)surface->getBuffersDataSpace());
+    canvas.drawBitmap(bitmap, 0, 0, &paint);
+
+    const int iconWidth = width();
+    const int iconHeight = height();
+
+    if (outBuffer.width > iconWidth) {
+        paint.setBlendMode(ABLEND_MODE_CLEAR); // clear to transparent
+        canvas.drawRect({iconWidth, 0, outBuffer.width, iconHeight}, paint);
+    }
+    if (outBuffer.height > iconHeight) {
+        paint.setBlendMode(ABLEND_MODE_CLEAR); // clear to transparent
+        canvas.drawRect({0, iconHeight, outBuffer.width, outBuffer.height}, paint);
+    }
+
+    status = surface->unlockAndPost();
+    if (status) {
+        ALOGE("Error %d unlocking and posting sprite surface after drawing.", status);
+    }
+    return !status;
+}
+
+} // namespace android