Import of the watch repository from Pebble

tests/fw/graphics/test_bitblt_palette_1bit.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 "applib/graphics/graphics.h"
+#include "applib/graphics/graphics_private.h"
+#include "applib/graphics/bitblt.h"
+#include "applib/graphics/bitblt_private.h"
+#include "applib/graphics/1_bit/framebuffer.h"
+#include "applib/graphics/gtypes.h"
+
+#include "clar.h"
+#include "util.h"
+
+#include <string.h>
+#include <stdio.h>
+
+// Stubs
+////////////////////////////////////
+#include "graphics_common_stubs.h"
+#include "stubs_applib_resource.h"
+#include "test_graphics.h"
+
+extern void prv_apply_tint_color(GColor *color, GColor tint_color);
+
+static uint8_t s_dest_data[100 * 100];
+static GBitmap s_dest_bitmap = {
+    .addr = s_dest_data,
+    .row_size_bytes = 16,
+    .info.format = GBitmapFormat1Bit,
+    .info.version = GBITMAP_VERSION_CURRENT,
+    .bounds = GRect(0, 0, 100, 100)
+  };
+// Tests
+////////////////////////////////////
+
+// setup and teardown
+void test_bitblt_palette_1bit__initialize(void) {
+  // Set dest bitmap to white
+  memset(s_dest_data, 0b11111111, sizeof(s_dest_data));
+}
+
+void test_bitblt_palette_1bit__cleanup(void) {
+}
+
+// Test images reside in "tests/fw/graphics/test_images/".
+// The wscript will convert them from PNGs in that directory to PBIs in the build directory.
+
+// Tests assign, from same size to same size.
+// Setup:
+//   - Source is 50x50, the left half is semi transparent orange and the right half is orange.
+//   - Dest is 100x100, white.
+// Result:
+//   - All dithered gray.
+void test_bitblt_palette_1bit__1bit_palette_to_1bit_assign(void) {
+  GBitmap *src_bitmap =
+    get_gbitmap_from_pbi("test_bitblt_palette_1bit__1bit_palette_to_1bit.pbi");
+
+  bitblt_bitmap_into_bitmap(&s_dest_bitmap, src_bitmap, GPointZero, GCompOpAssign, GColorWhite);
+  cl_assert(gbitmap_pbi_eq(&s_dest_bitmap,
+                  "test_bitblt_palette_1bit__1bit_palette_to_1bit_assign-expect.pbi"));
+
+  gbitmap_destroy(src_bitmap);
+}
+
+// Test images reside in "tests/fw/graphics/test_images/".
+// The wscript will convert them from PNGs in that directory to PBIs in the build directory.
+
+// Tests assign, from same size to same size.
+// Setup:
+//   - Source is 50x50, the left half is semi transparent orange and the right half is orange.
+//   - Dest is 100x100, white.
+// Result:
+//   - The left half will be white and the right half will be dithered gray.
+void test_bitblt_palette_1bit__1bit_palette_to_1bit_set(void) {
+  GBitmap *src_bitmap =
+    get_gbitmap_from_pbi("test_bitblt_palette_1bit__1bit_palette_to_1bit.pbi");
+
+  bitblt_bitmap_into_bitmap(&s_dest_bitmap, src_bitmap, GPointZero, GCompOpSet, GColorWhite);
+  cl_assert(gbitmap_pbi_eq(&s_dest_bitmap,
+                  "test_bitblt_palette_1bit__1bit_palette_to_1bit_set-expect.pbi"));
+
+  gbitmap_destroy(src_bitmap);
+}
+
+// Tests assign, from same size to same size.
+// Setup:
+//   - Source is 50x50, alternating lines between orange and blue for the top half.
+//     The bottom half is a diagonal orange line over blue.
+//     The left half is semi-transparent and the right half is completely opaque
+//   - Dest is 100x100, white.
+// Result:
+//   - The top half will be alternating between dithered gray and black lines
+//     The bottom half consists of a diagonal white line  on a black background
+void test_bitblt_palette_1bit__2bit_palette_to_1bit_assign(void) {
+  GBitmap *src_bitmap =
+    get_gbitmap_from_pbi("test_bitblt_palette_1bit__2bit_palette_to_1bit.pbi");
+
+  bitblt_bitmap_into_bitmap(&s_dest_bitmap, src_bitmap, GPointZero, GCompOpAssign, GColorWhite);
+  cl_assert(gbitmap_pbi_eq(&s_dest_bitmap,
+                  "test_bitblt_palette_1bit__2bit_palette_to_1bit-expect.pbi"));
+
+  gbitmap_destroy(src_bitmap);
+}
+
+// Tests assign, from same size to same size.
+// Setup:
+//   - Source is 50x50, alternating lines between orange and blue for the top half.
+//     The bottom half is a diagonal orange line over blue.
+//     The left half is semi-transparent and the right half is completely opaque
+//   - Dest is 100x100, white.
+// Result:
+//   - The top right half will be alternating between dithered gray and black lines
+//     The bottom right half consists of a diagonal white line  on a black background
+//     The left half will be completely white
+void test_bitblt_palette_1bit__2bit_palette_to_1bit_set(void) {
+  GBitmap *src_bitmap =
+    get_gbitmap_from_pbi("test_bitblt_palette_1bit__2bit_palette_to_1bit.pbi");
+
+  bitblt_bitmap_into_bitmap(&s_dest_bitmap, src_bitmap, GPointZero, GCompOpSet, GColorWhite);
+  cl_assert(gbitmap_pbi_eq(&s_dest_bitmap,
+                  "test_bitblt_palette_1bit__2bit_palette_to_1bit_set-expect.pbi"));
+
+  gbitmap_destroy(src_bitmap);
+}
+
+// Tests assign, from same size to same size.
+// Setup:
+//   - Source is 50x50, alternating lines between orange and blue for the top half.
+//     The bottom half is a diagonal orange line over blue.
+//     The left half is semi-transparent and the right half is completely opaque
+//   - Dest is 50x50, white.
+// Result:
+//   - The image desribed will be tiled in each of the four corners
+//     The top right half will be alternating between dithered gray and black lines
+//     The bottom right half consists of a diagonal white line  on a black background
+//     The left half will be completely white
+void test_bitblt_palette_1bit__2bit_palette_to_1bit_wrap(void) {
+  GBitmap *src_bitmap =
+    get_gbitmap_from_pbi("test_bitblt_palette_1bit__2bit_palette_to_1bit.pbi");
+
+  bitblt_bitmap_into_bitmap_tiled(&s_dest_bitmap, src_bitmap, s_dest_bitmap.bounds, GPointZero, GCompOpAssign, GColorWhite);
+  cl_assert(gbitmap_pbi_eq(&s_dest_bitmap,
+                  "test_bitblt_palette_1bit__2bit_palette_to_1bit_wrap-expect.pbi"));
+
+  gbitmap_destroy(src_bitmap);
+}
+
+// Tests assign, from same size to same size.
+// Setup:
+//   - Source is 50x50, alternating lines between orange and blue for the top half.
+//     The bottom half is a diagonal orange line over blue.
+//     The left half is semi-transparent and the right half is completely opaque
+//   - Dest is 100x100, white.
+// Result:
+//   - The image described below will be at an offset of 20, 20
+//     The top right half will be alternating between dithered gray and black lines
+//     The bottom right half consists of a diagonal white line  on a black background
+//     The left half will be completely white
+void test_bitblt_palette_1bit__2bit_palette_to_1bit_offest(void) {
+  GBitmap *src_bitmap =
+    get_gbitmap_from_pbi("test_bitblt_palette_1bit__2bit_palette_to_1bit.pbi");
+
+  bitblt_bitmap_into_bitmap(&s_dest_bitmap, src_bitmap, GPoint(20,20), GCompOpAssign, GColorWhite);
+  cl_assert(gbitmap_pbi_eq(&s_dest_bitmap,
+                  "test_bitblt_palette_1bit__2bit_palette_to_1bit_offest-expect.pbi"));
+
+  gbitmap_destroy(src_bitmap);
+}
+
+void test_bitblt_palette_1bit__get_1bit_graphics_grayscale_pattern(void) {
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorWhite, 0), 0xFFFFFFFF);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorWhite, 1), 0xFFFFFFFF);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorLightGray, 0), 0x55555555);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorLightGray, 1), 0xAAAAAAAA);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorDarkGray, 0), 0x55555555);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorDarkGray, 1), 0xAAAAAAAA);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorBlack, 0), 0x00000000);
+  cl_assert_equal_i(graphics_private_get_1bit_grayscale_pattern(GColorBlack, 1), 0x00000000);
+}
+
+void test_bitblt_palette_1bit__prv_apply_tint_color(void) {
+  GColor color = GColorBlack;
+  GColor tinted_color = GColorBlack;
+  prv_apply_tint_color(&color, GColorClear);
+  cl_assert_equal_i(color.argb, tinted_color.argb);
+  tinted_color = GColorRed;
+  prv_apply_tint_color(&color, GColorRed);
+  cl_assert_equal_i(color.argb, tinted_color.argb);
+  tinted_color.a = 2;
+  color.a = 2;
+  prv_apply_tint_color(&color, GColorRed);
+  cl_assert_equal_i(color.argb, tinted_color.argb);
+  tinted_color.a = 1;
+  color.a = 1;
+  prv_apply_tint_color(&color, GColorRed);
+  cl_assert_equal_i(color.argb, tinted_color.argb);
+
+}
+