GRAFFITIIMAGEVIEWER - GRAFFITISUITE DOCS

# GraffitiImageViewer Class Inherits GraffitiSuite.BaseCanvas ## About A beautiful image viewing control that supports zoom, pan, and rotate via gestures. ## Event Definitions | Name | Parameters | Return Type | Description | | --- | :---: | :---: | --- | | Dragging | (None) | (None) | Raised when the user is dragging the image using the three-finger gesture. | | LongPressed | (None) | (None) | Raised when the user has held their finger down in the same spot for one second or longer. | | PaintBackground | g as Graphics | (None) | Used for drawing the background of the control behind the image. The mask of this drawing operation is used to mask the entire control. | | PaintForeground | g as Graphics | (None) | Used to draw anything layered above the image. | | Pressed | (None) | (None) | Raised when the user single-press taps the control. | | Rotating | (None) | (None) | Raised during rotation operations. | | Scaling | (None) | (None) | Raised during scaling operations. | | SwipedDown | (None) | (None) | Raised when the user swipes vertically downward. | | SwipedLeft | (None) | (None) | Raised when the user swipes horizontally left. | | SwipedRight | (None) | (None) | Raised when the user swipes horizontally right. | | SwipedUp | (None) | (None) | Raised when the user swipes vetically upward. | ## Methods | Name | Parameters | Return Type | Description | | --- | :---: | :---: | --- | | Constructor | (None) | (None) | | | FlipHorizontal | (None) | (None) | Flip the image horizontally. | | FlipVertical | (None) | (None) | Flip the image vertically. | | Reset | (None) | (None) | Resets rotation and scaling. | | ScaleToFill | (None) | (None) | Scales the image to fill the drawable area. | | ScaleToFit | (None) | (None) | Scales the image to fit within the drawable area. | ## Shared Methods | Name | Parameters | Return Type | Description | | --- | :---: | :---: | --- | | BitmapForCaching | width as Double height as Double scale as Point | Picture | (None) | | ColorizeImage | p as Picture c as Color | Picture | (None) | | DrawGradient | g as Graphics StartColor as Color EndColor as Color Optional TopToBottom as Boolean = True | (None) | (None) | ## Properties | Name | Type | Default Value | Description | | --- | :---: | :---: | --- | | DrawGrid | Boolean | (None) | Controls whether the control will draw a grid between the background and image layers. | | EnableDragMovement | Boolean | (None) | Controls whether the three-finger drag gesture is enabled. | | EnablePinchRotation | Boolean | (None) | Controls whether the pinch rotation gesture is enabled. | | EnablePinchZoom | Boolean | (None) | Controls whether the pinch zooming gesture is enabled. | | EnableSwiping | Boolean | (None) | Controls whether swipe gestures are enabled. | | GridColor | ColorGroup | (None) | Color used to draw the grid, when enabled. | | GridSize | Integer | (None) | Approximate point size of the grid squares when enabled. | | Image | Picture | (None) | Image displayed for user interaction. | | PositionOffset | Point | (None) | X/Y offset of the image within the display. | | Rotation | Double | (None) | Rotation angle in degrees. | | Scale | Double | (None) | Scale of the image drawn in the display. |