Add Canvas.

skia @ 6886d924

-Subproject commit f905f5fd8a0634968ed2cf148366cb4f9d47d187
+Subproject commit 6886d924a06e06f6a49f95fc4f8e555caa306cd3

src/BUILD.bazel

 
 cc_library(
-    name = "render",
-    srcs = ["canvas.cc"],
-    hdrs = ["canvas.h"],
+    name = "try",
+    srcs = ["try.cc"],
+    hdrs = ["try.h"],
     deps = [
         "@skia//:skia_svg",
         "@skia//:skia",
     ],
     copts = [
         "-I./external/ffmpeg/include",
-        "-std=c++2a"
+        "-std=c++2a",
     ],
     visibility = [
       "//app:__pkg__",

src/canvas.cc

-#include <stdio.h>
-#include "include/core/SkCanvas.h"
-#include "include/core/SkStream.h"
-#include "include/core/SkRefCnt.h"
-#include "modules/svg/include/SkSVGDOM.h"
-
-int example(void) {
-    SkCanvas canvas = SkCanvas();
-    SkFILEStream svgStream("./example");
-    sk_sp<SkSVGDOM> fDom = SkSVGDOM::MakeFromStream(svgStream);
-    return 0;
-}

src/canvas.h

 
-int example();
+#ifndef CANVAS_H
+#define CANVAS_H
+
+enum PixelTypes {};
+
+class Canvas {
+public:
+    Canvas(int width, int height, PixelTypes pixType);
+};
+
+#endif /* CANVAS_H */

src/try.cc

+#include <iostream>
+#include <fstream>
+#include <string>
+#include "include/core/SkSurface.h"
+#include "include/core/SkCanvas.h"
+#include "include/core/SkStream.h"
+#include "include/core/SkRefCnt.h"
+#include "modules/svg/include/SkSVGDOM.h"
+#include "include/core/SkImageInfo.h"
+#include "include/core/SkColorType.h"
+#include "include/core/SkBitmap.h"
+#include "include/core/SkImage.h"
+#include "include/core/SkEncodedImageFormat.h"
+#include "include/core/SkData.h"
+
+int example(void) {
+    const int width = 1920;
+    const int height = 1080;
+    const int pixelBytes = 4;
+
+    SkImageInfo imgInfo = SkImageInfo::Make(
+        width, height, kBGRA_8888_SkColorType, kOpaque_SkAlphaType);
+
+
+    size_t size = 1920 * 1080 * 4;
+    uint8_t *buffer = new uint8_t[size];
+    auto canvas = SkCanvas::MakeRasterDirect(
+        imgInfo, buffer, imgInfo.width() * pixelBytes);
+    SkFILEStream svgStream("/home/aydenlin/Downloads/example.svg");
+
+    if (!svgStream.isValid()) {
+        return 1;
+    }
+
+    auto fDom = SkSVGDOM::MakeFromStream(svgStream);
+    fDom->setContainerSize(SkSize::Make(width, height));
+    fDom->render(canvas.get());
+
+    SkBitmap bitmap{};
+    bitmap.allocPixels(imgInfo, width * pixelBytes);
+    if (canvas->readPixels(bitmap, 0, 0) == false) {
+        return 2;
+    }
+
+    sk_sp<SkImage> image = SkImage::MakeFromBitmap(bitmap);
+    if (image == nullptr) {
+        return 1;
+    }
+
+    sk_sp<SkData> data = image->encodeToData(SkEncodedImageFormat::kPNG, 100);
+    uint8_t *dataPtr = const_cast<uint8_t*>(data->bytes());
+
+    std::ofstream out("/home/aydenlin/Downloads/out.png", std::ios::binary);
+    for (int i = 0; i < data->size(); ++i) {
+        out.write(reinterpret_cast<char*>(&dataPtr[i]), 1);
+    }
+
+    out.close();
+
+    return 0;
+}

src/try.h

+
+int example();

tests/BUILD.bazel

@@ -10,7 +10,7 @@ cc_test(
         "-lz", "-llzma", "-ljpeg", "-lfreetype",
         "-lpng", "-lfontconfig", "-lGLX", "-lexpat -lm"],
     deps = [
-        "//src:render",
+        "//src:try",
         "@theft//:theft",
         "@gtest//:gtest",
         "@gtest//:gtest_main",

tests/check.cc

-#include "src/canvas.h"
+#include "src/try.h"
 #include "gtest/gtest.h"
 
 extern "C" {