PhosphorEngine::IPlacementEngine::DragInsertTarget Struct Reference

Where a drag-insert preview should place the dragged window, in the TARGET ENGINE's slot vocabulary. More...

#include <phosphor-engine/include/PhosphorEngine/IPlacementEngine.h>

Public Member Functions
bool	isValid () const
bool	operator== (const DragInsertTarget &other) const =default

Public Attributes
int	primary = -1
int	secondary = -1
bool	newSlot = false
bool	leadingEdge = false

Detailed Description

Where a drag-insert preview should place the dragged window, in the TARGET ENGINE's slot vocabulary.

A flat int cannot address the strip's two-axis drop space ("column 3, tile 1" vs "a new column between 2 and 3"), so the drag-insert verbs speak this struct; each engine documents its own field meaning.

• Autotile: primary is the TILED-ONLY insert index (the unit updateDragInsertPreview clamps against tiledWindowCount — NOT the raw window-order index HandoffContext::insertIndex carries). secondary and newSlot are unused.
• Scrolling: primary is the COLUMN index. With newSlot true the drop opens a NEW column at primary (existing columns from primary shift right); otherwise the window joins the column at primary as a tile at secondary (clamped into the stack; -1 appends at the bottom). leadingEdge marks a new-column target aimed from BEYOND the view's leading edge (left of everything visible, or the first visible column's outer band): the drop is identical, but the indicator renders it as a past-the-edge hint instead of a full rect over the first visible column. Purely a presentation tag — commit ignores it, autotile never sets it.

Member Function Documentation

isValid()

bool PhosphorEngine::IPlacementEngine::DragInsertTarget::isValid ( ) const

inline

operator==()

bool PhosphorEngine::IPlacementEngine::DragInsertTarget::operator== ( const DragInsertTarget &  other ) const

default

Member Data Documentation

leadingEdge

bool PhosphorEngine::IPlacementEngine::DragInsertTarget::leadingEdge = false

newSlot

bool PhosphorEngine::IPlacementEngine::DragInsertTarget::newSlot = false

primary

int PhosphorEngine::IPlacementEngine::DragInsertTarget::primary = -1

secondary

int PhosphorEngine::IPlacementEngine::DragInsertTarget::secondary = -1

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The documentation for this struct was generated from the following file:

• phosphor-engine/include/PhosphorEngine/IPlacementEngine.h