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Qt creator design1/27/2024 ![]() UIs created using it heavily depend on x and y axis to position items inside the window. The Qt Quick Designer doesn’t know about responsive UI. In this case, x&y will be ignored since horizontalCenter and bottom anchors are set, however the code should be cleaned up from somebody manually. That said, if the user sets anchors to that item, the x&y code lines will not be removed resulting in something like this:Īnchors.horizontalCenter: parent.horizontalCenter That said, for example, x&y are set by default when the user drags&drops new components into the scene or updated when existing ones are being dragged inside the view. Qt Quick Designer doesn’t know about code clean up. Other than this we avoid having ugly repetitive paths like “./././images/myImage.png” in each file we need an image, instead we use Config.image(“myImage”), a lot nicer and clean solution. The resolvedUrl function will return the resolved related to the url path, so having the images in one single place we keep consistency of it. Return Qt.resolvedUrl(“./assets/images/” + path + “.png”) Thus it is always recommendable to a) keep the assets organized in a single folder and b) define somewhere a global function with a parameter that will return the path to that folder plus the path specified in the parameter plus the file extension. This is not optimal, especially in big projects, as assets are often changing and updated and the folder structure and/or names can do so as well. Therefore, manual work is needed to apply both structure and possibly modular architecture. If we look at the Coffee Machine example, all files are stored inside the project’s root directory, except a few ones that are in imports. ![]() There is no folder structure and application architecture. Then in SideBar.qml actions are being implemented and those are for example, that if macchiato is clicked then current milk and coffee amount are set as well as the coffee selected signal is emitted. In SideBarForm.ui.qml we see a collection of Buttons and other visual components and at the top all 4 coffee options defined as aliases, referring to the respective buttons. Taking the classic Coffee Machine Example that was built using the QtQuickDesigner, if we have a look for example at the SideBar which is the bar that the user shall choose their type of coffee, we see SideBarForm.ui.qml and SideBar.qml. Having that said, to get this access working, alias properties are defined in the Form.ui.qml file which are addressing to the components that need to have the respective logic applied. Technically speaking, this file inherits the Form.ui.qml file so that it can access its children in order to apply logic and/or animations to those. qml files that have the same name as the Form.ui.qml file they correspond to. It is possible to edit in edit mode, however Qt Creator will always open it in QtQuickDesigner at first place.Īll logic like signal handlers, functions etc including animations is created and stored in ordinary. The Form.ui.qml files are opened and edited in the design mode by default when double clicking on or switching to those. ![]() This file contains and maintains all code that implements the visual parts of the application, like Buttons, Text, etc. Now let’s have a look at what these files doing. When creating views in Qt Quick Designer, 2 files are generated each time, a MyFileNameForm.ui.qml plus a MyFileName.qml file. We have looked in more detail into the topic from a developer’s perspective and mostly for when it comes to production development and have collected here some pros and cons as well as facts and myths. It all sounds very good and convenient, but what does it really look like in practice? Similar to the Qt Quick Designer there is also the Qt Designer which is meant for building QWidget based UI and it’s also integrated in Qt Creator and in addition to those two there is also the Qt Design Studio, a different application but similar to Qt Quick Designer with some more features, like for example the exportation of assets from Photoshop, Sketch and/or Figma to the Qt Design Studio which then generates a runnable QML project out of that design. Animations can be also built using the tool. It is mainly meant for the development of solely the visual parts and the logic of events that are supposed to only change the visual behavior. The Qt Quick Designer is a tool which is integrated in the Qt Creator IDE and serves the purpose of building QML GUIs in a drag n’ drop alike environment.
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