Copyright (C) 1994, Digital Equipment Corp.
<*PRAGMA LL*>A
PixmapVBT.T is a VBT that displays a pixmap. Its preferred
and minimum sizes are the size of the pixmap, and its maximum size
in each axis is very large.
INTERFACEThe callPixmapVBT ; IMPORT VBT, PaintOp, Pixmap; TYPE T <: Public; Public = VBT.Leaf OBJECT METHODS <* LL.sup <= VBT.mu *> init (pm: Pixmap.T; op: PaintOp.T := PaintOp.BgFg; bg: PaintOp.T := PaintOp.Bg): T END;
v.init(...) initializes v as a PixmapVBT displaying
pixmap pm using the paint op op, and returns v. The pixmap
is always centered within the domain of v, and if the domain is
larger than the pixmap, the background is painted using the tint
bg.
When the pixmap has depth 1, op should be a pair of tints.
Otherwise, a good choice for op is PaintOp.Copy.
PROCEDURE Put (v: T; pm: Pixmap.T); <* LL.sup = VBT.mu *>
Change the pixmap displayed byvtopm, and markvfor redisplay.
PROCEDURE SetColors (v : T;
op: PaintOp.T;
bg: PaintOp.T := PaintOp.Bg);
<* LL.sup = VBT.mu *>
Change theopandbgofv, and markvfor redisplay.
END PixmapVBT.