DragonFly On-Line Manual Pages
Shape_MoveShape(3) Non-rectangular Window Extension Shape_MoveShape(3)
See the file man.macros.
Shape_CombineWindow, Shape_MoveShape - apply a shaping to a window
Shape_CombineBitmap(interp, tkwin, kind, op, x, y, bitmap)
Shape_CombineRectangles(interp, tkwin, kind, op, rectc, rectv)
Shape_CombineRectanglesOrdered(interp, tkwin, kind, op, rectc, rectv)
Shape_CombineRegion(interp, tkwin, kind, op, x, y, region)
Shape_CombineWindow(interp, tkwin, kind, op, x, y, srcwin)
Shape_MoveShape(interp, tkwin, kind, x, y)
Interpreter to use for error reporting. Token for window to apply the
shaping operation to. Which shape should the operation be applied to;
must be a boolean combination of SHAPE_BOUNDING, SHAPE_CLIP, and
SHAPE_TOPLEVEL. What kind of operation to apply; should be
SHAPE_OP_SET, SHAPE_OP_UNION, SHAPE_OP_INTERSECT, SHAPE_OP_SUBTRACT, or
SHAPE_OP_INVERT. Offset (along X axis) to apply to shape. Offset
(along Y axis) to apply to shape. Identifier for a bitmap that defines
a shape to apply. Number of rectangles in array. Array of rectangles
that define a shape to apply. Token for region defining the shape to
apply. Token for window whose shape is to be used to apply.
These functions let you set and modify the shape of a given window,
tkwin. Each Shape_Combine* function operates almost the same,
supporting the same options as to what parts of the window to apply the
shaping operation to (kind,) and the same kinds of ways of applying a
shape (op.) Most also support the application of an offset (x,y) to
the shape to be applied before application to the window, making it
easier to support resizing windows. Each function returns TCL_OK on
success, and TCL_ERROR on failure (when it leaves a description of the
problem in interp suitable for passing back to calling code.)
Shape_CombineBitmap applies the shape defined by the given bitmap,
bitmap, to the window.
Shape_CombineRegion applies the shape defined by the given region,
region, to the window.
Shape_CombineWindow applies the shape already defined on another
window, srcwin, to a window (useful for propagating shapes up window
Shape_CombineRectangles applies the shape defined by an array of rectc
rectangles, rectv, to the window. No overall transformation for the
rectangles is supported, since that is easily applied in the calling
Shape_CombineRectanglesOrdered applies the shape defined by an array of
rectc rectangles, rectv, to the window. The rectangles must be
arranged so that they are non-overlapping and proceed in strict
scanline order. Not all platforms make use of this extra information.
No overall transformation for the rectangles is supported, since that
is easily applied in the calling code.
Shape_MoveShape applies a translation (defined by (x,y) in the
coordinate system of the root window) to the specified shape of the
Five operations are supported:
SHAPE_OP_SET This sets the shape of the window to be that
specified by the source.
SHAPE_OP_UNION This updates the shape of the window to
include that specified by the source.
SHAPE_OP_INTERSECT This updates the shape of the window to be the
overlap between the current shape of the
window and the shape of the source.
SHAPE_OP_SUBTRACT This updates the shape of the window to
exclude the shape of the source.
SHAPE_OP_INVERT This sets the shape of the window to be
wherever was not previously in the shape of
the window. The source is ignored.
Under X, each window has two different shapes; the bounding shape and
the clipping shape. The bounding shape specifies which parts of the
window obscure things which are in underlying windows, and the clipping
shape specifies which parts of the window are actually drawn upon by
the application. The space between is the border of the window. Note
that parts of windows that can be drawn upon but which do not obscure
the underlying matter cannot actually be seen anyway.
Tk manages its own borders, so these two shapes should normally be made
identical (by passing KIND_BOTH to the kind parameter.) These
functions support individual modification though.
To make things more complex (i.e. to help the implementation of
menubars and embedded windows,) Tk implements toplevel windows using
several X windows. This means that to alter the shape of a toplevel,
it is also necessary to modify the shape of the containing window.
This operation is performed automatically if the KIND_TOPLEVEL flag is
set in the kind parameter.
Donal K. Fellows <email@example.com>
shape(n), Shape_GetBbox(3), Shape_RenderTextAsRectangles(3)
Shape 0.4 Shape_MoveShape(3)