[−][src]Module azul_core::callbacks

Type definitions for various types of callbacks, as well as focus and scroll handling

Structs

Callback	Stores a function pointer that is executed when the given UI element is hit
CallbackInfo	Information about the callback that is passed to the callback whenever a callback is invoked
DocumentId
GlCallback	Callbacks that returns a rendered OpenGL texture
GlCallbackInfo
HidpiAdjustedBounds	Information about the bounds of a laid-out div rectangle.
HitTestItem
IFrameCallback	Callback that, given a rectangle area on the screen, returns the DOM appropriate for that bounds (useful for infinite lists)
IFrameCallbackInfo
LayoutInfo	Gives the `layout()` function access to the `AppResources` and the `Window` (for querying images and fonts, as well as width / height)
LayoutInfoPtr	Pointer to rust-allocated `Box<LayoutInfo<'a>>` struct
ParentNodesIterator	Iterator that, starting from a certain starting point, returns the parent node until it gets to the root node.
PipelineId
Ref	The two-way binding system
RefAny
RefAnyPtr	Pointer to rust-allocated `Box<RefAny>` struct
ScrollPosition	Information about a scroll frame, given to the user by the framework
TimerCallback	Callback that can runs on every frame on the main thread - can modify the app data model
TimerCallbackInfo

Defines the focus_targeted node ID for the next frame

DontRedraw	The screen does not need to redraw after the callback has been called.
Redraw	After the callback is called, the screen needs to redraw (layout() function being called again).

The actual function that calls the callback in their proper hierarchy and order

CallbackReturn
CallbackType
GlCallbackReturn
GlCallbackType
IFrameCallbackReturn
IFrameCallbackType
LayoutCallback	Callback function pointer (has to be a function pointer in order to be compatible with C APIs later on).
PipelineSourceId	This type carries no valuable semantics for WR. However, it reflects the fact that clients (Servo) may generate pipelines by different semi-independent sources. These pipelines still belong to the same `IdNamespace` and the same `DocumentId`. Having this extra Id field enables them to generate `PipelineId` without collision.
TimerCallbackReturn
TimerCallbackType
UpdateScreen	A callback function has to return if the screen should be updated after the function has run.