Propose making QQuickImage public in Qt 5.2
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I propose making QQuickImage public so that custom Image component with "image" property can be implemented by subclassing QQuickImage.
"This thread":http://qt-project.org/forums/viewthread/32763/ mentions the reason
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Hi,
You're on the wrong place to do that (this forum is more user oriented), for such requests you should use the "bug report system":http://bugreports.qt-project.org and fill a "feature request" with all details explaining why it would be good (don't forget to check if one already exists)
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Thank Jens
but I want to avoid reimplementing Image component completely.
I think a new Image component with "image" property should be implemented officially.
Because there are "image" property in UIImageView of iOS, ImageView of Android and ImageView of BB10 repectively.
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An “image” property can help ease implementing image processing applications.
For example, an image is loaded via a network resource by Image component of QtQuick, “image” property can be used as an input of image processing tasks(implemented by C++), and then new image(return by C++ functions) can be assigned to “image” property to update Image.
Imagine there were an image property, I can do that
@Image {
id: imageView
source: http://qt-project.org/images/qt13a/Qt-logo.png
onStatusChanged: if (image.status == Image.Ready) {
var newImage = cppClass.imageProcess(imageView.image)
imageView.image = imageView.image
}
}@Without "image" property, I need to download images by C++ code first, and then pass images to QQuickImageProvider.
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There is no way to process images loaded via QML without using a shader. So you'd need to think about if your processing can be done with a shader.
I agree with Jens that exposing an "imageData" attribute of some kind would cover a very small number of use cases, which doesn't help you if you fall under that use case!
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Thank sohail
I knew Shader Effects, I want to use Shader Effects too. However after Shader Effects are rendered, how to save results? The only way I know is grabbing drawing frames. The issue of grabbing drawing frames is that I cannot get full-resolution results because screen resolution is limited.
