hoodle-core-0.11: Core library for hoodle

PortabilityGHC
Stabilityexperimental
MaintainerIan-Woo Kim <ianwookim@gmail.com>
Safe HaskellNone

Hoodle.Widget.PanZoom

Description

Pan-Zoom widget drawing and action

Documentation

data PanZoomMode Source

Constructors

Moving 
Zooming 
Panning Bool 

widgetCheckPen :: CanvasId -> PointerCoord -> MainCoroutine () -> MainCoroutine ()Source

findZoomXform :: Dimension -> ((Double, Double), (Double, Double), (Double, Double)) -> (Double, (Double, Double))Source

findPanXform :: Dimension -> ((Double, Double), (Double, Double)) -> (Double, Double)Source

startWidgetActionSource

Arguments

:: PanZoomMode 
-> CanvasId 
-> CanvasGeometry 
-> (Surface, Surface) 
-> CanvasCoordinate

original widget position

-> CanvasCoordinate

where pen pressed

-> UTCTime 
-> MainCoroutine () 

movingRender :: PanZoomMode -> CanvasId -> CanvasGeometry -> (Surface, Surface) -> CanvasCoordinate -> CanvasCoordinate -> PointerCoord -> MainCoroutine ()Source

togglePanZoom :: MainCoroutine ()Source