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Viewport(3I) | InterViews Reference Manual | Viewport(3I) |
NAME¶
Viewport - scrollable view
SYNOPSIS¶
#include <InterViews/viewport.h>
DESCRIPTION¶
Viewportis a subclass of MonoScene that allocates its componentexactly as much space as it wants (determined from its shape).This space will be clipped to the viewport's size andthe viewport maintains a perspective to adjust the portionof the component that is actually displayed.If the component is smaller than the viewport's canvas,then the viewport background will be filled with a light gray pattern.
PUBLICOPERATIONS¶
- Viewport(Interactor* = nil, Alignment = Center)
- Construct a new viewport.If the interactor is not nil, it is insertedas the viewport's component.The second parameter determines where the componentis placed relative to the viewport.
- Insert(Interactor*)
- Set the component interactor.
- void Change(Interactor*)
- A viewport does not propagate changes.Thus, if the component's shape changesthe viewport simply resizes the componentaccording to the new shape.
- void Remove(Interactor*)
- Take out the component interactor.
- virtual void Adjust(Perspective&)
- Change the viewport's perspective to the given one.This operation will cause the desired area of the componentto be drawn.
- void AdjustTo(float px, float py, float zx, float zy)
- void AdjustBy(float dpx, float dpy, float dzx, float dzy)
- void ScrollTo(float px, float py)
- void ScrollXTo(float px)
- void ScrollYTo(float py)
- void ScrollBy(float dpx, float dpy)
- void ScrollXBy(float dpx)
- void ScrollYBy(float dpy)
- void ZoomTo(float zx, float zy)
- void ZoomXTo(float zx)
- void ZoomYTo(float zy)
- void ZoomBy(float dzx, float dzy)
- void ZoomXBy(float dzx)
- void ZoomYBy(float dzy)
- Short-hand operations for explicit manipulation of the viewport's perspective.
- float XPos()
- float YPos()
- float XMag()
- float YMag()
- Short-hand for retrieving information about the current perspective.
SEEALSO¶
Perspective(3I), Scene(3I), Shape(3I)
10 February 1988 | InterViews |