Import of the watch repository from Pebble

tests/fakes/fake_gbitmap_get_data_row.c

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * 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 "fake_gbitmap_get_data_row.h"
+
+#include "applib/graphics/gtypes.h"
+
+#include <stdint.h>
+
+bool s_fake_data_row_handling = false;
+bool s_fake_data_row_handling_disable_vertical_flip = false;
+
+extern GBitmapDataRowInfo prv_gbitmap_get_data_row_info(const GBitmap *bitmap, uint16_t y);
+
+// Overrides the same function in gbitmap.c
+GBitmapDataRowInfo gbitmap_get_data_row_info(const GBitmap *bitmap, uint16_t y) {
+  // If fake data row handling is enabled, clip the row to a diamond mask
+  if (s_fake_data_row_handling) {
+    const int16_t diamond_offset =
+        ABS((bitmap->bounds.size.w / 2) - (y * bitmap->bounds.size.w / bitmap->bounds.size.h));
+    const int16_t min_x = bitmap->bounds.origin.x + diamond_offset;
+    // vertically flip unless disabled
+    if (!s_fake_data_row_handling_disable_vertical_flip) {
+      y = bitmap->bounds.size.h - y - 1;
+    }
+    return (GBitmapDataRowInfo){
+      .data = prv_gbitmap_get_data_row_info(bitmap, y).data,
+      .min_x = min_x,
+      .max_x = grect_get_max_x(&bitmap->bounds) - diamond_offset - 1,
+    };
+  }
+  return prv_gbitmap_get_data_row_info(bitmap, y);
+}