This makes components a great way to peel off responsibilities from an overly complex live view. While stateless components don’t do much more than render a particular leex template, stateful components implement a handle_event/3 function that allow us to update the component’s own state. Since they share a process with their parent live view, communication between the two is simple (more on that later).Ĭomponents can be stateless or stateful. –– docsĬomponents are run inside a parent live view process via a call to _component/3. …a mechanism to compartmentalize state, markup, and events in LiveView. One way to achieve this goal is to leverage the Phoenix.LiveComponent behaviour.Ĭomponents are modules that use the Phoenix.LiveComponent behaviour. How can we write live views that are easy to reason about and maintain while adhering to common design principles like SRP? If we’re not careful, this can lead to “fat controller syndrome”––live views that are jam packed with complex business logic and disparate responsibilities, just like the classic “fat Rails controller”. If you plug the camera in to a TV via HDMI, then for most cameras, whatever would normally show up on the LCD should be displayed on the TV and the controls on the camera will function as normal.As LiveView becomes a more established technology, we naturally find ourselves using it to back more and more complex features. Attempting to do this may even damage either the camera or your laptop. You can run information out of the laptop to a TV, but you can't run HDMI from your camera in to the laptop. Your laptop almost certainly has an HDMI output, it can't be used in both directions. You also mention the HDMI connector on your laptop. If you are trying to use an MHL adapter with the USB port, it is not going to work and may cause harm to the camera. Generally, if your camera has an HDMI output, then it will display the photos on the TV that it is plugged in to, but I'm not sure what you mean by USB HDMI cable? USB and HDMI are not the same, there is a technology called MHL that allows HDMI to be output over the same physical port as USB if it has special hardware, however the D600 doesn't have this, it just has a compact HDMI port. Even though many tethering applications allow you to control your camera from the computer, most also allow you to retain control using the camera itself. If you want to shoot with your camera connected to a laptop to view your work as you shoot, you need to use a tethering capable application on your computer and connect the D600 to the computer via a mini-USB to USB cable. Use a mini-HDMI to HDMI cable to connect the mini-HDMI port on your camera to the HDMI port on a television or monitor. If you are trying to connect your D600 to an HDMI monitor or TV via the camera's USB port using a cable designed for an MHL compliant USB port (such as many mobile phones use to output video to a screen) it will not work since the USB port on your D600 is not MHL compliant. In general the only devices that can accept an HDMI signal and display it are televisions and monitors. This prevents someone from being able to connect a DVD or BlueRay player to their computer and copy protected content. Due to Intellectual Property constraints, most notebook or laptop computers as well as desktop models do not have an HDMI port that allows video signals to be brought in via the HDMI port.
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