flutter - 在 Flutter 中旋转图像

Question

我正在尝试在 flutter 中旋转旋转框内的图像，我知道图像在框内，因此它也随之旋转，但我想将其旋转回来“只有框内的图像，我想让盒子保持原样旋转”。

这是我当前的代码:

body: Center(
          child: Column(
            children: <Widget>[
              Expanded(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Expanded(
                      child: Transform(
                        alignment: Alignment.center,
                        transform: Matrix4.rotationZ(
                          3.1415926535897932 / 4,
                        ),
                        child: Container(
                          margin: const EdgeInsets.only(top: 20.0),
                          child: Padding(
                            padding: const EdgeInsets.all(2.0),
                            child: Container(
                              child: Image.asset("assets/images/man.png"),
                              decoration: kInnerDecoration,
                            ),
                          ),
                          height: 66.0,
                          decoration: kGradientBoxDecoration,
                        ),
                      ),
                    ),
                    Expanded(
                      child: Text("Name Row"),
                    ),
                  ],
                ),
              ),
              Expanded(
                child: Text("Bottom"),
              ),
            ],
          ),
        )

模拟器中的当前输出:

我想要的样子:

Answer 1

我玩了一下并得到了这个代码。我对图片进行了反向旋转并更改了缩进。

class Test extends StatelessWidget {
  Test({Key? key}) : super(key: key);

  final kInnerDecoration = BoxDecoration(
    color: Colors.white,
    border: Border.all(color: Colors.white),
    borderRadius: BorderRadius.circular(32),
  );

  final kGradientBoxDecoration = BoxDecoration(
    gradient: LinearGradient(colors: [Colors.black, Colors.redAccent]),
    borderRadius: BorderRadius.circular(32),
  );

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: Center(
          child: Column(
            children: <Widget>[
              Expanded(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Padding(padding: EdgeInsets.only(top: 50)),
                    Expanded(
                      child: Transform(
                        alignment: FractionalOffset.center,
                        transform: Matrix4.rotationZ(
                          3.1415926535897932 / 4,
                        ),
                        child: Container(
                          // margin: const EdgeInsets.only(top: 20.0),
                          child: Padding(
                            padding: const EdgeInsets.all(2.0),
                            child: Container(
                              child: Transform(
                                alignment: Alignment.center,
                                transform: Matrix4.rotationZ(
                                  -3.1415926535897932 / 4,
                                ),
                                child: Image.asset(
                                  "assets/image.png",
                                  height: 100,
                                  width: 100,
                                ),
                              ),
                              decoration: kInnerDecoration,
                            ),
                          ),
                          height: 100,
                          width: 150,
                          decoration: kGradientBoxDecoration,
                        ),
                      ),
                    ),
                    Padding(padding: EdgeInsets.only(top: 50)),
                    Expanded(
                      child: Text("Name Row"),
                    ),
                  ],
                ),
              ),
              Expanded(
                child: Text("Bottom"),
              ),
            ],
          ),
        ),
      ),
    );
  }
}