1/*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "Resources.h"
9#include "SkData.h"
10#include "SkImage.h"
11#include "gm.h"
12#include "sk_tool_utils.h"
13
14static void draw_image(SkCanvas* canvas, const char* resource, int x, int y) {
15    sk_sp<SkImage> image(GetResourceAsImage(resource));
16    if (image) {
17        canvas->drawImage(image, SkIntToScalar(x), SkIntToScalar(y));
18    } else {
19        SkDebugf("\nCould not decode file '%s'. Did you forget"
20                 " to set the resourcePath?\n", resource);
21    }
22}
23
24/*
25  This GM tests whether the image decoders properly decode each color
26  channel.  Four copies of the same image should appear in the GM, and
27  the letter R should be red, B should be blue, G green, C cyan, M
28  magenta, Y yellow, and K black. In all but the JPEG version of the
29  image, the letters should be on a white disc on a transparent
30  background (rendered as a checkerboard).  The JPEG image has a grey
31  background and compression artifacts.
32 */
33DEF_SIMPLE_GM(colorwheel, canvas, 256, 256) {
34    sk_tool_utils::draw_checkerboard(canvas);
35    draw_image(canvas, "color_wheel.png", 0, 0);  // top left
36    draw_image(canvas, "color_wheel.gif", 128, 0);  // top right
37    draw_image(canvas, "color_wheel.webp", 0, 128);  // bottom left
38    draw_image(canvas, "color_wheel.jpg", 128, 128);  // bottom right
39}
40
41DEF_SIMPLE_GM(colorwheelnative, canvas, 128, 28) {
42    SkPaint paint;
43    sk_tool_utils::set_portable_typeface(&paint, "sans-serif",
44                                         SkFontStyle::FromOldStyle(SkTypeface::kBold));
45    paint.setTextSize(18.0f);
46
47    canvas->clear(sk_tool_utils::color_to_565(SK_ColorLTGRAY));
48    paint.setColor(SK_ColorRED);
49    canvas->drawText("R", 1, 8.0f, 20.0f, paint);
50    paint.setColor(SK_ColorGREEN);
51    canvas->drawText("G", 1, 24.0f, 20.0f, paint);
52    paint.setColor(SK_ColorBLUE);
53    canvas->drawText("B", 1, 40.0f, 20.0f, paint);
54    paint.setColor(SK_ColorCYAN);
55    canvas->drawText("C", 1, 56.0f, 20.0f, paint);
56    paint.setColor(SK_ColorMAGENTA);
57    canvas->drawText("M", 1, 72.0f, 20.0f, paint);
58    paint.setColor(SK_ColorYELLOW);
59    canvas->drawText("Y", 1, 88.0f, 20.0f, paint);
60    paint.setColor(SK_ColorBLACK);
61    canvas->drawText("K", 1, 104.0f, 20.0f, paint);
62}
63