upload android base code part3

android/bootable/recovery/vr_ui.cpp

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 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 "vr_ui.h"
+
+#include <minui/minui.h>
+
+VrRecoveryUI::VrRecoveryUI() : kStereoOffset(RECOVERY_UI_VR_STEREO_OFFSET) {}
+
+bool VrRecoveryUI::InitTextParams() {
+  if (!ScreenRecoveryUI::InitTextParams()) return false;
+  int mid_divide = gr_fb_width() / 2;
+  text_cols_ = (mid_divide - kMarginWidth - kStereoOffset) / char_width_;
+  return true;
+}
+
+int VrRecoveryUI::DrawTextLine(int x, int y, const char* line, bool bold) const {
+  int mid_divide = gr_fb_width() / 2;
+  gr_text(gr_sys_font(), x + kStereoOffset, y, line, bold);
+  gr_text(gr_sys_font(), x - kStereoOffset + mid_divide, y, line, bold);
+  return char_height_ + 4;
+}