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[/] [or1k/] [tags/] [start/] [insight/] [tk/] [unix/] [tkUnixMenubu.c] - Rev 1765
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/* * 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. * * RCS: @(#) $Id: tkUnixMenubu.c,v 1.1.1.1 2002-01-16 10:26:01 markom Exp $ */ #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); }