#include <array>
#include <span>
#include "donner/base/Box.h"
#include "donner/base/Transform.h"
#include "donner/base/Vector2.h"

Include dependency graph for SelectionTransformHandles.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	donner::editor::SelectionTransformHandleIntent
	Hit-test result for selection transform handles. More...
struct	donner::editor::SelectionTransformHandleBoxes
	Visual handle boxes for one selection envelope, in document coordinates. More...

Namespaces
namespace	donner
	Top-level Donner namespace, which is split into different sub-namespaces such as donner::svg and donner::css.

Enumerations
enum class	donner::editor::SelectionTransformCorner { TopLeft , TopRight , BottomRight , BottomLeft }
	Corner handle identity for selection resize/rotate gestures.
enum class	donner::editor::SelectionTransformHandleKind { None , Resize , Rotate }
	Interaction kind under the pointer near selection transform handles.

Functions
Box2d	donner::editor::CombinedSelectionBounds (std::span< const Box2d > selectionBoundsDoc)
	Return a combined AABB for a selection-bounds span.
Vector2d	donner::editor::SelectionTransformCornerPoint (const Box2d &bounds, SelectionTransformCorner corner)
	Return the point for a corner of `bounds`.
SelectionTransformCorner	donner::editor::OppositeSelectionTransformCorner (SelectionTransformCorner corner)
	Return the opposite corner from `corner`.
SelectionTransformHandleBoxes	donner::editor::SelectionTransformHandleBoxesForBounds (const Box2d &boundsDoc, double pixelsPerDocUnit)
	Build document-space handle boxes with screen-stable size under `pixelsPerDocUnit`.
SelectionTransformHandleIntent	donner::editor::HitTestSelectionTransformHandles (std::span< const Box2d > selectionBoundsDoc, const Vector2d &documentPoint, double pixelsPerDocUnit)
	Hit-test resize and rotate corner zones using document-space bounds and scale.
double	donner::editor::PixelsPerDocUnitFromTransform (const Transform2d &canvasFromDoc)
	Return pixels per document unit from a document-to-canvas transform.

Function Documentation

◆ HitTestSelectionTransformHandles()

SelectionTransformHandleIntent donner::editor::HitTestSelectionTransformHandles	(	std::span< const Box2d >	selectionBoundsDoc,
		const Vector2d &	documentPoint,
		double	pixelsPerDocUnit )

nodiscard

Hit-test resize and rotate corner zones using document-space bounds and scale.

Resize wins over rotate when zones overlap. Rotate is intentionally outside the square handle, in a small ring around each corner.