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Skia

Download​

Dept Tools​

git clone 'https://chromium.googlesource.com/chromium/tools/depot_tools.git'
mv depot_tools/* /usr/local/bin

Skia​

git clone https://skia.googlesource.com/skia.git
cd skia
python3 tools/git-sync-deps
bin/fetch-ninja

Build​

bin/gn gen out/Shared --args='is_official_build=false is_component_build=true is_debug=false'
ninja -C out/Shared

Install​

sudo cp -R out/Shared/lib* /usr/local/lib/
sudo cp -R include /usr/local/include/skia

Devcontainer​

FROM mcr.microsoft.com/devcontainers/cpp:0-ubuntu-22.04

COPY source/ /source

ENV LD_LIBRARY_PATH=/usr/local/lib

RUN cd /source && \
    tar xf depot_tools.tar.gz && \
    mv depot_tools/* /usr/local/bin && \
    rm -r depot_tools* && \
    tar xf skia.tar.gz && \
    rm -rf skia.tar.gz && \
    unzip ninja-linux-amd64.zip -d skia/third_party/ninja && \
    cd /source/skia && \
    sudo apt-get update && sudo apt-get -y upgrade && \
    sudo apt-get install -y \
        build-essential \
        freeglut3-dev \
        libfontconfig-dev \
        libfreetype6-dev \
        libgl1-mesa-dev \
        libglew-dev \
        libglfw3-dev \
        libglu1-mesa-dev \
        libicu-dev \
        libjpeg-dev \
        libpng-dev \
        libspdlog-dev \
        libvulkan-dev \
        libwebp-dev \
        mesa-common-dev && \
    bin/gn gen out/Shared --args='is_official_build=false is_component_build=true is_debug=false' && \
    ninja -C out/Shared && \
    sudo cp -R out/Shared/lib* /usr/local/lib/ && \
    sudo cp -R include /usr/local/include/include && \
    cd / && rm -rf /source
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkData.h"
#include "include/core/SkEncodedImageFormat.h"
#include "include/core/SkColor.h"
#include "include/core/SkPaint.h"
#include "include/core/SkImageEncoder.h"
#include "include/core/SkRect.h"
#include "include/core/SkStream.h"

int main()
{
    const int width = 800;
    const int height = 600;
    SkBitmap bitmap;
    bitmap.allocN32Pixels(width, height);
    SkCanvas canvas(bitmap);
    canvas.clear(SK_ColorGRAY);

    SkRect rect = SkRect::MakeLTRB(100, 100, 300, 200);
    SkPaint paint;
    paint.setColor(SK_ColorRED);
    paint.setStyle(SkPaint::kFill_Style);
    canvas.drawRect(rect, paint);

    SkPixmap pixmap;
    bitmap.peekPixels(&pixmap);
    sk_sp<SkData> pngData = SkEncodePixmap(pixmap, SkEncodedImageFormat::kPNG, 100);
    if (pngData)
    {
        SkFILEWStream stream("output.png");
        stream.write(pngData->data(), pngData->size());
    }
}

Output: