/************************************************************************/ /* Module : image.c */ /* Purpose: graphics module for mpsql */ /* By : Keith R. Davis */ /* Date : 9/9/95 */ /* Notes : Modified from source by Douglas Young */ /* Copyright 1994 by Prentice Hall */ /************************************************************************/ #include /* motif lib header */ #include /* drawing area widget header */ #include /* label widget header */ #include /* xpm lib header */ #include "image.h" /* image module header */ #define MAX(a,b) (a>b ? a : b) #define PAD 2 /************************************************************************/ /* Function: InstallLabeledPixmap */ /* Purpose : places a pixmap & label in a widgets label property */ /* Params : w : widget to place pixmap in */ /* xpmDescription : ptr to pixmap data of image to display */ /* showLabelString : flag to show string desc. w/ image */ /* 0 no label / 1 show label */ /* Returns : nothing */ /************************************************************************/ void InstallLabeledPixmap ( Widget w, char **xpmDescription, int showLabelString ) { XmString label; XmFontList fontlist; GC gc; GC inverseGc; Dimension width, height; unsigned int pixmapWidth, pixmapHeight; XGCValues values; int junk, depth; Display *display = XtDisplay ( w ); unsigned char alignment; XpmAttributes attributes; XpmColorSymbol symbols[5]; int totalWidth, totalHeight; int status; Pixmap labelPixmap, xpmPixmap; Colormap cmap; /* Retrieve the values used by the given widget */ XtVaGetValues ( w, XmNlabelString, &label, XmNfontList, &fontlist, XmNforeground, &values.foreground, XmNbackground, &values.background, XmNdepth, &depth, XmNalignment, &alignment, XmNcolormap, &cmap, NULL ); /* * Create two GCs, one to draw the text and copy the pixmaps * and another that can be used to erase a pixmap by filling * it with the background color of the label widget. Because * the normal GC is used by XmStringDraw, which modifies * the font attribute of the GC, allocate this GC using * XtAllocateGC() and specify GCFont as modifiable. */ gc = XtAllocateGC ( w, depth, GCForeground | GCBackground, &values, GCFont, 0 ); values.foreground = values.background; inverseGc = XtGetGC ( w, GCForeground | GCBackground, &values ); /* * Set up the XpmColorSymbol array, binding the name "background" * to the actual background color of the widget. */ symbols[0].name = "background"; symbols[0].value = NULL; symbols[0].pixel = values.background; /* * Set the resulting information in the attributes structure */ attributes.colorsymbols = symbols; attributes.numsymbols = 1; /* * Specify the visual, colormap and depth * to be used and set the XpmAttributes mask. */ attributes.colormap = cmap; attributes.depth = depth; attributes.visual = DefaultVisual ( display, DefaultScreen ( display ) ); attributes.valuemask = XpmColorSymbols | XpmDepth | XpmColormap | XpmVisual; /* * Create the pixmap of the given image */ status = XpmCreatePixmapFromData ( display, DefaultRootWindow ( display ), xpmDescription, &xpmPixmap, NULL, &attributes ); /* * Compute the size of the label string and the given pixmap */ if(showLabelString) XmStringExtent ( fontlist, label, &width, &height ); else { width = 0; height = 0; } XGetGeometry ( display, xpmPixmap, ( Window * ) &junk, (int *) &junk, (int *) &junk, &pixmapWidth, &pixmapHeight, ( unsigned int *) &junk, ( unsigned int *) &junk ); /* * Compute the sum of the label and pixmap sizes. */ totalHeight = pixmapHeight + height + PAD; totalWidth = totalHeight; /* * Create the final pixmap using the combined size and * fill the pixmap with the background color of the widget */ labelPixmap = XCreatePixmap ( display, RootWindowOfScreen ( XtScreen ( w ) ), totalWidth, totalHeight, depth ); XFillRectangle ( display, labelPixmap, inverseGc, 0, 0, totalWidth, totalHeight ); /* * Copy the Xpm-created pixmap into the larger pixmap and * then draw the string below the pixmap. */ XCopyArea ( XtDisplay ( w ), xpmPixmap, labelPixmap, gc, 0, 0, pixmapWidth, pixmapHeight, ( totalWidth - pixmapWidth ) / 2, 0 ); if(showLabelString) { XmStringDraw ( display, labelPixmap, fontlist, label, gc, 0, pixmapHeight + PAD, totalWidth, alignment, XmSTRING_DIRECTION_L_TO_R, NULL ); } /* * Install the final pixmap in the widget. */ XtVaSetValues ( w, XmNlabelPixmap, labelPixmap, XmNlabelType, XmPIXMAP, NULL ); /* * Free the GCs, the initial pixmap, and the string retrieved * from the label widget. */ XFreePixmap ( display, xpmPixmap ); XtReleaseGC ( w, gc); XtReleaseGC ( w, inverseGc ); XmStringFree ( label ); } /************************************************************************/ /* Function: SetupIcon */ /* Purpose : installs pixmap as the apps window manager icon */ /* Params : shell : app's shell widget */ /* xpmDesc : ptr to pixmap data of image to display */ /* Returns : nothing */ /************************************************************************/ void SetupIcon ( Widget shell, char **xpmDesc ) { Pixmap pix; XpmAttributes attributes; int status; Display *dpy = XtDisplay ( shell ); /* * Retrieve the depth and colormap used by this widget * and store the results in the corresponding field * of an XpmAttributes structure. */ XtVaGetValues ( shell, XmNdepth, &attributes.depth, XmNcolormap, &attributes.colormap, NULL); /* * Specify the visual to be used and set the XpmAttributes mask. */ attributes.visual = DefaultVisual ( dpy, DefaultScreen ( dpy ) ); attributes.valuemask = XpmDepth | XpmColormap | XpmVisual; /* * Create the pixmap */ status = XpmCreatePixmapFromData ( dpy, DefaultRootWindow ( dpy ), xpmDesc, &pix, NULL, &attributes ); /* * Install the icon_shell's window as the icon window. */ XtVaSetValues(shell, XmNiconPixmap, pix, NULL); }