Allow customization of charger animation

Allow the charging animation to be customized with a configuration file
and custom assets.

 - Add a parser to parse a custom configuration file.
 - Add support for showing a clock and the battery percentage.
 - Expand feature that conditionally shows animation frames using min_level
   and level_only to min_level and max_level

BUG: 29547343
Change-Id: Ia33f4bb37dc7d4c7fa6507a63481e93bf0bf9738
diff --git a/healthd/tests/Android.mk b/healthd/tests/Android.mk
new file mode 100644
index 0000000..87e8862
--- /dev/null
+++ b/healthd/tests/Android.mk
@@ -0,0 +1,21 @@
+# Copyright 2016 The Android Open Source Project
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    AnimationParser_test.cpp \
+
+LOCAL_MODULE := healthd_test
+LOCAL_MODULE_TAGS := tests
+
+LOCAL_STATIC_LIBRARIES := \
+	libhealthd_internal \
+
+LOCAL_SHARED_LIBRARIES := \
+	liblog \
+	libbase \
+	libcutils \
+
+include $(BUILD_NATIVE_TEST)
diff --git a/healthd/tests/AnimationParser_test.cpp b/healthd/tests/AnimationParser_test.cpp
new file mode 100644
index 0000000..2fc3185
--- /dev/null
+++ b/healthd/tests/AnimationParser_test.cpp
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2016 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 "AnimationParser.h"
+
+#include <gtest/gtest.h>
+
+using namespace android;
+
+TEST(AnimationParserTest, Test_can_ignore_line) {
+    EXPECT_TRUE(can_ignore_line(""));
+    EXPECT_TRUE(can_ignore_line("     "));
+    EXPECT_TRUE(can_ignore_line("#"));
+    EXPECT_TRUE(can_ignore_line("   # comment"));
+
+    EXPECT_FALSE(can_ignore_line("text"));
+    EXPECT_FALSE(can_ignore_line("text # comment"));
+    EXPECT_FALSE(can_ignore_line("     text"));
+    EXPECT_FALSE(can_ignore_line("     text # comment"));
+}
+
+TEST(AnimationParserTest, Test_remove_prefix) {
+    static const char TEST_STRING[] = "abcdef";
+    const char* rest = nullptr;
+    EXPECT_FALSE(remove_prefix(TEST_STRING, "def", &rest));
+    // Ignore strings that only consist of the prefix
+    EXPECT_FALSE(remove_prefix(TEST_STRING, TEST_STRING, &rest));
+
+    EXPECT_TRUE(remove_prefix(TEST_STRING, "abc", &rest));
+    EXPECT_STREQ("def", rest);
+
+    EXPECT_TRUE(remove_prefix("  abcdef", "abc", &rest));
+    EXPECT_STREQ("def", rest);
+}
+
+TEST(AnimationParserTest, Test_parse_text_field) {
+    static const char TEST_FILE_NAME[] = "font_file";
+    static const int TEST_X = 3;
+    static const int TEST_Y = 6;
+    static const int TEST_R = 1;
+    static const int TEST_G = 2;
+    static const int TEST_B = 4;
+    static const int TEST_A = 8;
+
+    static const char TEST_XCENT_YCENT[] = "c c 1 2 4 8  font_file ";
+    static const char TEST_XCENT_YVAL[]  = "c 6 1 2 4 8  font_file ";
+    static const char TEST_XVAL_YCENT[]  = "3 c 1 2 4 8  font_file ";
+    static const char TEST_XVAL_YVAL[]   = "3 6 1 2 4 8  font_file ";
+    static const char TEST_BAD_MISSING[] = "c c 1 2 4 font_file";
+    static const char TEST_BAD_NO_FILE[] = "c c 1 2 4 8";
+
+    animation::text_field out;
+
+    EXPECT_TRUE(parse_text_field(TEST_XCENT_YCENT, &out));
+    EXPECT_EQ(CENTER_VAL, out.pos_x);
+    EXPECT_EQ(CENTER_VAL, out.pos_y);
+    EXPECT_EQ(TEST_R, out.color_r);
+    EXPECT_EQ(TEST_G, out.color_g);
+    EXPECT_EQ(TEST_B, out.color_b);
+    EXPECT_EQ(TEST_A, out.color_a);
+    EXPECT_STREQ(TEST_FILE_NAME, out.font_file.c_str());
+
+    EXPECT_TRUE(parse_text_field(TEST_XCENT_YVAL, &out));
+    EXPECT_EQ(CENTER_VAL, out.pos_x);
+    EXPECT_EQ(TEST_Y, out.pos_y);
+    EXPECT_EQ(TEST_R, out.color_r);
+    EXPECT_EQ(TEST_G, out.color_g);
+    EXPECT_EQ(TEST_B, out.color_b);
+    EXPECT_EQ(TEST_A, out.color_a);
+    EXPECT_STREQ(TEST_FILE_NAME, out.font_file.c_str());
+
+    EXPECT_TRUE(parse_text_field(TEST_XVAL_YCENT, &out));
+    EXPECT_EQ(TEST_X, out.pos_x);
+    EXPECT_EQ(CENTER_VAL, out.pos_y);
+    EXPECT_EQ(TEST_R, out.color_r);
+    EXPECT_EQ(TEST_G, out.color_g);
+    EXPECT_EQ(TEST_B, out.color_b);
+    EXPECT_EQ(TEST_A, out.color_a);
+    EXPECT_STREQ(TEST_FILE_NAME, out.font_file.c_str());
+
+    EXPECT_TRUE(parse_text_field(TEST_XVAL_YVAL, &out));
+    EXPECT_EQ(TEST_X, out.pos_x);
+    EXPECT_EQ(TEST_Y, out.pos_y);
+    EXPECT_EQ(TEST_R, out.color_r);
+    EXPECT_EQ(TEST_G, out.color_g);
+    EXPECT_EQ(TEST_B, out.color_b);
+    EXPECT_EQ(TEST_A, out.color_a);
+    EXPECT_STREQ(TEST_FILE_NAME, out.font_file.c_str());
+
+    EXPECT_FALSE(parse_text_field(TEST_BAD_MISSING, &out));
+    EXPECT_FALSE(parse_text_field(TEST_BAD_NO_FILE, &out));
+}
+
+TEST(AnimationParserTest, Test_parse_animation_desc_basic) {
+    static const char TEST_ANIMATION[] = R"desc(
+        # Basic animation
+        animation: 5 1 test/animation_file
+        frame: 1000 0 100
+    )desc";
+    animation anim;
+
+    EXPECT_TRUE(parse_animation_desc(TEST_ANIMATION, &anim));
+}
+
+TEST(AnimationParserTest, Test_parse_animation_desc_bad_no_animation_line) {
+    static const char TEST_ANIMATION[] = R"desc(
+        # Bad animation
+        frame: 1000 90  10
+    )desc";
+    animation anim;
+
+    EXPECT_FALSE(parse_animation_desc(TEST_ANIMATION, &anim));
+}
+
+TEST(AnimationParserTest, Test_parse_animation_desc_bad_no_frame) {
+    static const char TEST_ANIMATION[] = R"desc(
+        # Bad animation
+        animation: 5 1 test/animation_file
+    )desc";
+    animation anim;
+
+    EXPECT_FALSE(parse_animation_desc(TEST_ANIMATION, &anim));
+}
+
+TEST(AnimationParserTest, Test_parse_animation_desc_bad_animation_line_format) {
+    static const char TEST_ANIMATION[] = R"desc(
+        # Bad animation
+        animation: 5 1
+        frame: 1000 90  10
+    )desc";
+    animation anim;
+
+    EXPECT_FALSE(parse_animation_desc(TEST_ANIMATION, &anim));
+}
+
+TEST(AnimationParserTest, Test_parse_animation_desc_full) {
+    static const char TEST_ANIMATION[] = R"desc(
+        # Full animation
+        animation: 5 1 test/animation_file
+        clock_display:    11 12 13 14 15 16 test/time_font
+        percent_display:  21 22 23 24 25 26 test/percent_font
+
+        frame: 10 20 30
+        frame: 40 50 60
+    )desc";
+    animation anim;
+
+    EXPECT_TRUE(parse_animation_desc(TEST_ANIMATION, &anim));
+
+    EXPECT_EQ(5, anim.num_cycles);
+    EXPECT_EQ(1, anim.first_frame_repeats);
+    EXPECT_STREQ("test/animation_file", anim.animation_file.c_str());
+
+    EXPECT_EQ(11, anim.text_clock.pos_x);
+    EXPECT_EQ(12, anim.text_clock.pos_y);
+    EXPECT_EQ(13, anim.text_clock.color_r);
+    EXPECT_EQ(14, anim.text_clock.color_g);
+    EXPECT_EQ(15, anim.text_clock.color_b);
+    EXPECT_EQ(16, anim.text_clock.color_a);
+    EXPECT_STREQ("test/time_font", anim.text_clock.font_file.c_str());
+
+    EXPECT_EQ(21, anim.text_percent.pos_x);
+    EXPECT_EQ(22, anim.text_percent.pos_y);
+    EXPECT_EQ(23, anim.text_percent.color_r);
+    EXPECT_EQ(24, anim.text_percent.color_g);
+    EXPECT_EQ(25, anim.text_percent.color_b);
+    EXPECT_EQ(26, anim.text_percent.color_a);
+    EXPECT_STREQ("test/percent_font", anim.text_percent.font_file.c_str());
+
+    EXPECT_EQ(2, anim.num_frames);
+
+    EXPECT_EQ(10, anim.frames[0].disp_time);
+    EXPECT_EQ(20, anim.frames[0].min_level);
+    EXPECT_EQ(30, anim.frames[0].max_level);
+
+    EXPECT_EQ(40, anim.frames[1].disp_time);
+    EXPECT_EQ(50, anim.frames[1].min_level);
+    EXPECT_EQ(60, anim.frames[1].max_level);
+}