Initial revision

1 files changed, 307 insertions, 0 deletions

diff --git a/unix/tkUnixMenubu.c b/unix/tkUnixMenubu.c
new file mode 100644
index 0000000..b5f4fd5
--- /dev/null
+++ b/unix/tkUnixMenubu.c
@@ -0,0 +1,307 @@
+/* 
+ * tkUnixMenubu.c --
+ *
+ *	This file implements the Unix specific portion of the
+ *	menubutton widget.
+ *
+ * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tkUnixMenubu.c 1.9 97/05/23 16:25:01
+ */
+
+#include "tkMenubutton.h"
+
+/*
+ * The structure below defines menubutton class behavior by means of
+ * procedures that can be invoked from generic window code.
+ */
+
+TkClassProcs tkpMenubuttonClass = {
+    NULL,			/* createProc. */
+    TkMenuButtonWorldChanged,	/* geometryProc. */
+    NULL			/* modalProc. */
+};
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpCreateMenuButton --
+ *
+ *	Allocate a new TkMenuButton structure.
+ *
+ * Results:
+ *	Returns a newly allocated TkMenuButton structure.
+ *
+ * Side effects:
+ *	Registers an event handler for the widget.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TkMenuButton *
+TkpCreateMenuButton(tkwin)
+    Tk_Window tkwin;
+{
+    return (TkMenuButton *)ckalloc(sizeof(TkMenuButton));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpDisplayMenuButton --
+ *
+ *	This procedure is invoked to display a menubutton widget.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Commands are output to X to display the menubutton in its
+ *	current mode.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpDisplayMenuButton(clientData)
+    ClientData clientData;	/* Information about widget. */
+{
+    register TkMenuButton *mbPtr = (TkMenuButton *) clientData;
+    GC gc;
+    Tk_3DBorder border;
+    Pixmap pixmap;
+    int x = 0;			/* Initialization needed only to stop
+				 * compiler warning. */
+    int y;
+    register Tk_Window tkwin = mbPtr->tkwin;
+    int width, height;
+
+    mbPtr->flags &= ~REDRAW_PENDING;
+    if ((mbPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
+	return;
+    }
+
+    if ((mbPtr->state == tkDisabledUid) && (mbPtr->disabledFg != NULL)) {
+	gc = mbPtr->disabledGC;
+	border = mbPtr->normalBorder;
+    } else if ((mbPtr->state == tkActiveUid) && !Tk_StrictMotif(mbPtr->tkwin)) {
+	gc = mbPtr->activeTextGC;
+	border = mbPtr->activeBorder;
+    } else {
+	gc = mbPtr->normalTextGC;
+	border = mbPtr->normalBorder;
+    }
+
+    /*
+     * In order to avoid screen flashes, this procedure redraws
+     * the menu button in a pixmap, then copies the pixmap to the
+     * screen in a single operation.  This means that there's no
+     * point in time where the on-sreen image has been cleared.
+     */
+
+    pixmap = Tk_GetPixmap(mbPtr->display, Tk_WindowId(tkwin),
+	    Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
+    Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin),
+	    Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
+
+    /*
+     * Display image or bitmap or text for button.
+     */
+
+    if (mbPtr->image != None) {
+	Tk_SizeOfImage(mbPtr->image, &width, &height);
+
+	imageOrBitmap:
+	TkComputeAnchor(mbPtr->anchor, tkwin, 0, 0, 
+		width + mbPtr->indicatorWidth, height, &x, &y);
+	if (mbPtr->image != NULL) {
+	    Tk_RedrawImage(mbPtr->image, 0, 0, width, height, pixmap,
+		    x, y);
+	} else {
+	    XCopyPlane(mbPtr->display, mbPtr->bitmap, pixmap,
+		    gc, 0, 0, (unsigned) width, (unsigned) height, x, y, 1);
+	}
+    } else if (mbPtr->bitmap != None) {
+	Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height);
+	goto imageOrBitmap;
+    } else {
+	TkComputeAnchor(mbPtr->anchor, tkwin, mbPtr->padX, mbPtr->padY,
+		mbPtr->textWidth + mbPtr->indicatorWidth,
+		mbPtr->textHeight, &x, &y);
+	Tk_DrawTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout, x, y,
+		0, -1);
+	Tk_UnderlineTextLayout(mbPtr->display, pixmap, gc, mbPtr->textLayout,
+		x, y, mbPtr->underline);
+    }
+
+    /*
+     * If the menu button is disabled with a stipple rather than a special
+     * foreground color, generate the stippled effect.
+     */
+
+    if ((mbPtr->state == tkDisabledUid)
+	    && ((mbPtr->disabledFg == NULL) || (mbPtr->image != NULL))) {
+	XFillRectangle(mbPtr->display, pixmap, mbPtr->disabledGC,
+		mbPtr->inset, mbPtr->inset,
+		(unsigned) (Tk_Width(tkwin) - 2*mbPtr->inset),
+		(unsigned) (Tk_Height(tkwin) - 2*mbPtr->inset));
+    }
+
+    /*
+     * Draw the cascade indicator for the menu button on the
+     * right side of the window, if desired.
+     */
+
+    if (mbPtr->indicatorOn) {
+	int borderWidth;
+
+	borderWidth = (mbPtr->indicatorHeight+1)/3;
+	if (borderWidth < 1) {
+	    borderWidth = 1;
+	}
+	/*y += mbPtr->textHeight / 2;*/
+	Tk_Fill3DRectangle(tkwin, pixmap, border,
+		Tk_Width(tkwin) - mbPtr->inset - mbPtr->indicatorWidth
+		+ mbPtr->indicatorHeight,
+		((int) (Tk_Height(tkwin) - mbPtr->indicatorHeight))/2,
+		mbPtr->indicatorWidth - 2*mbPtr->indicatorHeight,
+		mbPtr->indicatorHeight, borderWidth, TK_RELIEF_RAISED);
+    }
+
+    /*
+     * Draw the border and traversal highlight last.  This way, if the
+     * menu button's contents overflow onto the border they'll be covered
+     * up by the border.
+     */
+
+    if (mbPtr->relief != TK_RELIEF_FLAT) {
+	Tk_Draw3DRectangle(tkwin, pixmap, border,
+		mbPtr->highlightWidth, mbPtr->highlightWidth,
+		Tk_Width(tkwin) - 2*mbPtr->highlightWidth,
+		Tk_Height(tkwin) - 2*mbPtr->highlightWidth,
+		mbPtr->borderWidth, mbPtr->relief);
+    }
+    if (mbPtr->highlightWidth != 0) {
+	GC gc;
+
+	if (mbPtr->flags & GOT_FOCUS) {
+	    gc = Tk_GCForColor(mbPtr->highlightColorPtr, pixmap);
+	} else {
+	    gc = Tk_GCForColor(mbPtr->highlightBgColorPtr, pixmap);
+	}
+	Tk_DrawFocusHighlight(tkwin, gc, mbPtr->highlightWidth, pixmap);
+    }
+
+    /*
+     * Copy the information from the off-screen pixmap onto the screen,
+     * then delete the pixmap.
+     */
+
+    XCopyArea(mbPtr->display, pixmap, Tk_WindowId(tkwin),
+	    mbPtr->normalTextGC, 0, 0, (unsigned) Tk_Width(tkwin),
+	    (unsigned) Tk_Height(tkwin), 0, 0);
+    Tk_FreePixmap(mbPtr->display, pixmap);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpDestroyMenuButton --
+ *
+ *	Free data structures associated with the menubutton control.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Restores the default control state.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpDestroyMenuButton(mbPtr)
+    TkMenuButton *mbPtr;
+{
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpComputeMenuButtonGeometry --
+ *
+ *	After changes in a menu button's text or bitmap, this procedure
+ *	recomputes the menu button's geometry and passes this information
+ *	along to the geometry manager for the window.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The menu button's window may change size.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpComputeMenuButtonGeometry(mbPtr)
+    register TkMenuButton *mbPtr;	/* Widget record for menu button. */
+{
+    int width, height, mm, pixels;
+
+    mbPtr->inset = mbPtr->highlightWidth + mbPtr->borderWidth;
+    if (mbPtr->image != None) {
+	Tk_SizeOfImage(mbPtr->image, &width, &height);
+	if (mbPtr->width > 0) {
+	    width = mbPtr->width;
+	}
+	if (mbPtr->height > 0) {
+	    height = mbPtr->height;
+	}
+    } else if (mbPtr->bitmap != None) {
+	Tk_SizeOfBitmap(mbPtr->display, mbPtr->bitmap, &width, &height);
+	if (mbPtr->width > 0) {
+	    width = mbPtr->width;
+	}
+	if (mbPtr->height > 0) {
+	    height = mbPtr->height;
+	}
+    } else {
+	Tk_FreeTextLayout(mbPtr->textLayout);
+	mbPtr->textLayout = Tk_ComputeTextLayout(mbPtr->tkfont, mbPtr->text,
+		-1, mbPtr->wrapLength, mbPtr->justify, 0, &mbPtr->textWidth,
+		&mbPtr->textHeight);
+	width = mbPtr->textWidth;
+	height = mbPtr->textHeight;
+	if (mbPtr->width > 0) {
+	    width = mbPtr->width * Tk_TextWidth(mbPtr->tkfont, "0", 1);
+	}
+	if (mbPtr->height > 0) {
+	    Tk_FontMetrics fm;
+
+	    Tk_GetFontMetrics(mbPtr->tkfont, &fm);
+	    height = mbPtr->height * fm.linespace;
+	}
+	width += 2*mbPtr->padX;
+	height += 2*mbPtr->padY;
+    }
+
+    if (mbPtr->indicatorOn) {
+	mm = WidthMMOfScreen(Tk_Screen(mbPtr->tkwin));
+	pixels = WidthOfScreen(Tk_Screen(mbPtr->tkwin));
+	mbPtr->indicatorHeight= (INDICATOR_HEIGHT * pixels)/(10*mm);
+	mbPtr->indicatorWidth = (INDICATOR_WIDTH * pixels)/(10*mm)
+		+ 2*mbPtr->indicatorHeight;
+	width += mbPtr->indicatorWidth;
+    } else {
+	mbPtr->indicatorHeight = 0;
+	mbPtr->indicatorWidth = 0;
+    }
+
+    Tk_GeometryRequest(mbPtr->tkwin, (int) (width + 2*mbPtr->inset),
+	    (int) (height + 2*mbPtr->inset));
+    Tk_SetInternalBorder(mbPtr->tkwin, mbPtr->inset);
+}