/* $TOG: ShapeWidg.c /main/7 1998/02/06 15:44:53 kaleb $ */ /* Copyright 1988, 1998 The Open Group All Rights Reserved. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ /* $XFree86: xc/lib/Xmu/ShapeWidg.c,v 1.6 1998/10/03 09:06:32 dawes Exp $ */ #include #include #include "Converters.h" #include "Drawing.h" #include "Misc.h" /* * Prototypes */ static void ShapeEllipseOrRoundedRectangle(Widget, Bool, int, int); static void ShapeError(Widget); static void ShapeOval(Widget); static void ShapeRectangle(Widget); /* * Implementation */ Boolean XmuReshapeWidget(Widget w, int shape_style, int corner_width, int corner_height) { switch (shape_style) { case XmuShapeRectangle: ShapeRectangle(w); break; case XmuShapeOval: ShapeOval(w); break; case XmuShapeEllipse: case XmuShapeRoundedRectangle: ShapeEllipseOrRoundedRectangle(w, shape_style == XmuShapeEllipse, corner_width, corner_height); break; default: ShapeError(w); return (False); } return (True); } static void ShapeError(Widget w) { String params[1]; Cardinal num_params = 1; params[0] = XtName(w); XtAppWarningMsg(XtWidgetToApplicationContext(w), "shapeUnknown", "xmuReshapeWidget", "XmuLibrary", "Unsupported shape style for Command widget \"%s\"", params, &num_params); } static void ShapeRectangle(Widget w) { XShapeCombineMask(XtDisplay(w), XtWindow(w), ShapeBounding, 0, 0, None, ShapeSet); XShapeCombineMask(XtDisplay(w), XtWindow(w), ShapeClip, 0, 0, None, ShapeSet); } /* * Function: * ShapeOval * * Parameters: * w - widget to be reshaped * * Description: * Reshapes a widget to a oval format. * * Notes: * X11R6.3 behaviour changed. Now if the height is larger than the * width, this function inverts the sense of the oval, instead of * fallbacking to ellipse. */ static void ShapeOval(Widget w) { Display *dpy = XtDisplay(w); int width = w->core.width; int height = w->core.height; Pixmap p; XGCValues values; GC gc; int rad; if (width < 3 || height < 3) return; width += w->core.border_width << 1; height += w->core.border_width << 1; p = XCreatePixmap(dpy, XtWindow(w), width, height, 1); values.foreground = 0; values.background = 1; values.cap_style = CapRound; values.line_width = Min(width, height); gc = XCreateGC(dpy, p, GCForeground | GCBackground | GCLineWidth | GCCapStyle, &values); XFillRectangle(dpy, p, gc, 0, 0, width, height); XSetForeground(dpy, gc, 1); if (width < height) { rad = width >> 1; XDrawLine(dpy, p, gc, rad, rad, rad, height - rad - 1); } else { rad = height >> 1; XDrawLine(dpy, p, gc, rad, rad, width - rad - 1, rad); } XShapeCombineMask(dpy, XtWindow(w), ShapeBounding, -(int)w->core.border_width, -(int)w->core.border_width, p, ShapeSet); if (w->core.border_width) { XSetForeground(dpy, gc, 0); XFillRectangle(dpy, p, gc, 0, 0, width, height); values.line_width = Min(w->core.width, w->core.height); values.foreground = 1; XChangeGC(dpy, gc, GCLineWidth | GCForeground, &values); if (w->core.width < w->core.height) { rad = w->core.width >> 1; XDrawLine(dpy, p, gc, rad, rad, rad, w->core.height - rad - 1); } else { rad = w->core.height >> 1; XDrawLine(dpy, p, gc, rad, rad, w->core.width - rad - 1, rad); } XShapeCombineMask(dpy, XtWindow(w), ShapeClip, 0, 0, p, ShapeSet); } else XShapeCombineMask(XtDisplay(w), XtWindow(w), ShapeClip, 0, 0, None, ShapeSet); XFreePixmap(dpy, p); XFreeGC(dpy, gc); } /* * Function: * ShapeEllipseOrRoundedRectangle * * Parameters: * w - widget to be reshaped * ellipse - True if shape to ellise, rounded rectangle otherwise * ew - horizontal radius of rounded rectangle * eh - vertical radius of rouded rectangle * * Description: * Based on the ellipse parameter, gives the widget a elliptical * shape, or rounded rectangle shape. * * Notes: * The GC is created with a line width of 2, what seens to draw the * widget border correctly, if the width - height is not proportional. */ static void ShapeEllipseOrRoundedRectangle(Widget w, Bool ellipse, int ew, int eh) { Display *dpy = XtDisplay(w); unsigned width = w->core.width; unsigned height = w->core.height; Pixmap p; XGCValues values; GC gc; unsigned long mask; if (width < 3 || width < 3) return; width += w->core.border_width << 1; height += w->core.border_width << 1; mask = GCForeground | GCLineWidth; p = XCreatePixmap(dpy, XtWindow(w), width, height, 1); values.foreground = 0; values.line_width = 2; gc = XCreateGC(dpy, p, mask, &values); XFillRectangle(dpy, p, gc, 0, 0, width, height); XSetForeground(dpy, gc, 1); if (!ellipse) XmuFillRoundedRectangle(dpy, p, gc, 1, 1, width - 2, height - 2, ew, eh); else { XDrawArc(dpy, p, gc, 1, 1, width - 2, height - 2, 0, 360 * 64); XFillArc(dpy, p, gc, 2, 2, width - 4, height - 4, 0, 360 * 64); } XShapeCombineMask(dpy, XtWindow(w), ShapeBounding, -(int)w->core.border_width, -(int)w->core.border_width, p, ShapeSet); if (w->core.border_width) { XSetForeground(dpy, gc, 0); XFillRectangle(dpy, p, gc, 0, 0, width, height); XSetForeground(dpy, gc, 1); if (!ellipse) XmuFillRoundedRectangle(dpy, p, gc, 1, 1, w->core.width - 2, w->core.height - 2, ew, eh); else XFillArc(dpy, p, gc, 0, 0, w->core.width, w->core.height, 0, 360 * 64); XShapeCombineMask(dpy, XtWindow(w), ShapeClip, 0, 0, p, ShapeSet); } else XShapeCombineMask(XtDisplay(w), XtWindow(w), ShapeClip, 0, 0, None, ShapeSet); XFreePixmap(dpy, p); XFreeGC(dpy, gc); }