在QML/QT中设置绝对图像路径时出错(在Windows下)

Question

在Windows下我无法使用QML中的绝对文件路径加载图像.每次我收到以下错误:

QML Image: Cannot open: "file//d/folder/image1.jpg"

在Ubuntu下它完美无缺.

该代码将动态设置图像:

Image {
      id: img
      x: 0
      y: 25
      width: 227
      height: 230
      anchors.horizontalCenter: parent.horizontalCenter
      source: "file://"+path
      fillMode: Image.PreserveAspectFit
  }

我及时测试了以下命令,如果我点击图像:

onClicked:{

                console.log(path)
    }

比我得到当前的路径:D:/folder/image1.jpg 是否有针对Windows的解决方案？

问候

Answer 1

"file // d/folder/image1.jpg"不是有效的URL.它应该是"file:/// d:/folder/image1.jpg".

Answer 2

好吧，我找到了解决方案。我实现了一个QDeclarativeImageProvider在 C++ 中处理图像路径并返回 PixelMap 的程序。如果你感兴趣：

图像提供者.h

 #ifndef IMAGEPROVIDER_H
 #define IMAGEPROVIDER_H
 #include <QDeclarativeImageProvider>
class ImageProvider : public QObject, public QDeclarativeImageProvider
{
    Q_OBJECT
   public:

    ImageProvider(QDeclarativeImageProvider::ImageType type);
    ~ImageProvider();
    QImage requestImage(const QString& id, QSize* size, const QSize& requestedSize);
    QPixmap requestPixmap(const QString& id, QSize* size, const QSize& requestedSize);   
 };
#endif // IMAGEPROVIDER_H

图像提供者.cpp

#include "imageprovider.h"
#include <QFile>
#include <QImage>
#include <QPixmap>
#include <QDebug>


ImageProvider::ImageProvider(QDeclarativeImageProvider::ImageType type) :
QDeclarativeImageProvider(type){}

ImageProvider::~ImageProvider(){}

QImage ImageProvider::requestImage(const QString& id, QSize* size, const QSize&    requestedSize)
{
    QImage image(id);
    QImage result;

    if (requestedSize.isValid()) {
        result = image.scaled(requestedSize, Qt::KeepAspectRatio);
    } else {
         result = image;
    }
    *size = result.size();
    return result;
}

 QPixmap ImageProvider::requestPixmap(const QString& id, QSize* size, const QSize& requestedSize)
 {
    QPixmap image(id);
    QPixmap result;

    if (requestedSize.isValid()) {
        result = image.scaled(requestedSize, Qt::KeepAspectRatio);
    } else {
    result = image;
    }
    *size = result.size();
    return result;
}

在mainwindow.cpp中注册

   view->engine()->addImageProvider(QString("extern"), imageProvider);

qml 文件的片段

  Image {
      id: img
      x: 0
      y: 25
      width: 227
      height: 230
      anchors.horizontalCenter: parent.horizontalCenter
       source: "image://extern/"+path
      //doesn't find absolute path in windows source: "file://"+path
      fillMode: Image.PreserveAspectFit
  }