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Update documentation with info on sample panel

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Tyler Perkins 2021-12-22 22:54:05 -05:00
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DEVELOPMENT.md
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@ -8,7 +8,7 @@ drawing api, to allow you to have as much control over the display as possible.
dashboard uses a few objects for displaying things to the screen however, to
interact with the memory management.
First off, the default configuration is similar to web development "Carousels".
The default configuration is similar to web development "Carousels".
A series of **panels** are shown to the user by cycling through one by one.
A **board** is a singleton, and represents the physical display board.
@ -24,14 +24,18 @@ data, several threads, etc, **it is the panel's responsibility to implement
this**. The **board** provides a memory API, however you do not have to use
it.
Each *panel* also has an `initTexture()` function that you must implement. This
The **panel** parent class has an `update()` and `update_texture()` function
you must implement. Use `update()` to update the data for the panel. Use
`udpate_texture()` to update the `SDL_Texture _texture` each **panel** has
Each **panel** also has an `initTexture()` function that you must implement. This
should initialize the texture and should be called in your draw function. It is
up to you to call this, to give you the option of lazy loading it.
*This must be called in `draw()` or later, not in the constructor*. This is
because SDL will not be setup when your constructor is called, and therefore
will not be able to properly create the texture for the renderer.
The *_time_on_screen* value is in milliseconds, and will be the amount of time
The **_time_on_screen** value is in milliseconds, and will be the amount of time
the board will display the panel before transitioning. This value can be
modified at runtime if needed (ie displaying a dynamic length video).
@ -49,6 +53,9 @@ Each **panel** is also recommended to add its own config.hpp file for
configuring possible settings. All static files that it needs should be placed
in the main config.hpp file
**See `src/panel/sample_panel*` for an example in code of a simple panel to
help you get started**
Things you need to implement as a panel creator
-----------------------------------------------