Layout

Flexbox and grid layout, constraints and units. More...

Classes
struct	tachyon::CssPx
	A size in CSS px. More...
struct	tachyon::Pixels
	A size in device pixels, used as is (not scaled by the UI scale). More...
struct	tachyon::SizeConstraintAxis
	Per-axis size constraint: an explicit size, or a min / max clamp on the content-driven size. More...
struct	tachyon::PositionConstraintAxis
	Where an element goes on one axis: in the parent's flow (Relative, Centered, Sticky) or out of it (Absolute, Fixed, Anchored). More...
struct	tachyon::FlexOverride
	kDefault = use style value, >= 0 = override. More...
struct	tachyon::LayoutOverride
	Per-element overrides of style layout properties. More...
struct	tachyon::LayoutOverride::[struct].grid
	Grid item overrides; Default tracks and start < 0 keep the style's values. More...
struct	tachyon::LayoutHelpers
struct	tachyon::LayoutGrid
struct	tachyon::LayoutFlexbox
class	tachyon::LayoutEngine
	Computes element sizes and positions from styles, content and constraints, in four passes run after construction: More...

Enumerations
enum class	tachyon::AutoFlipMode : uint8_t { tachyon::AutoFlipMode::None = 0 , tachyon::AutoFlipMode::Flip = 1 , tachyon::AutoFlipMode::FlipAvoidTarget = 2 }
	What an anchored element does when its placement would leave the work area. More...
enum class	tachyon::TriState : uint8_t { tachyon::TriState::Default = 0 , tachyon::TriState::False = 1 , tachyon::TriState::True = 2 }
	Default defers to the element's style. More...

Functions
AnchorPlacement	tachyon::FlipHorizontal (AnchorPlacement p)
	Mirrors the horizontal part of a placement (e.g. right-of becomes left-of); vertical is kept.
AnchorPlacement	tachyon::FlipVertical (AnchorPlacement p)
	Mirrors the vertical part of a placement (e.g. below becomes above); horizontal is kept.

Detailed Description

Flexbox and grid layout, constraints and units.

Sizes are CSS px scaled by the UI scale; see Return values, content and units.

Enumeration Type Documentation

AutoFlipMode

enum class tachyon::AutoFlipMode : uint8_t

strong

#include <gui_core/layout/gui_constraints.h>

What an anchored element does when its placement would leave the work area.

Enumerator
None	Keep the placement as given.
Flip	Flip placement, then clamp to workArea.
FlipAvoidTarget	Flip, then shrink to avoid overlapping the anchor target.

TriState

enum class tachyon::TriState : uint8_t

strong

#include <gui_core/layout/gui_constraints.h>

Default defers to the element's style.

Enumerator
Default
False
True

Function Documentation

FlipHorizontal()

AnchorPlacement tachyon::FlipHorizontal

(

AnchorPlacement

p

)

#include <gui_core/layout/gui_constraints.h>

Mirrors the horizontal part of a placement (e.g. right-of becomes left-of); vertical is kept.

FlipVertical()

AnchorPlacement tachyon::FlipVertical

(

AnchorPlacement

p

)

#include <gui_core/layout/gui_constraints.h>

Mirrors the vertical part of a placement (e.g. below becomes above); horizontal is kept.