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/************************************************************************/
/* Module : imageutil.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 <Xm/Xm.h> /* motif lib header */
#include <Xm/PushB.h> /* drawing area widget header */
#include <Xm/Label.h> /* label widget header */
#include <X11/xpm.h> /* xpm lib header */
#include "imageutil.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 */
/* xpmSensitive : ptr to pixmap data */
/* showLabelString : flag to show string desc. w/ image */
/* 0 no label / 1 show label */
/* Returns : nothing */
/************************************************************************/
void InstallLabeledPixmap ( Widget w, char **image, int showLabelString )
{
XmString label;
XmFontList fontlist;
GC gc, inverseGc;
Dimension width, height;
unsigned int pixmapWidth, pixmapHeight;
XGCValues values, stipple_values;
int junk, depth;
Display *display = XtDisplay ( w );
unsigned char alignment;
XpmAttributes attributes;
XpmColorSymbol symbols[5];
int totalWidth, totalHeight;
int status;
Pixmap labelPixmap,
labelPixmap2,
xpmPixmap,
stipple;
Colormap cmap;
static char stippleBitmap[8] = { 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA };
/* 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 ),
image, &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
*/
/* Normal Pixmap */
labelPixmap =
XCreatePixmap ( display,
RootWindowOfScreen ( XtScreen ( w ) ),
totalWidth, totalHeight, depth );
XFillRectangle ( display, labelPixmap,
inverseGc, 0, 0,
totalWidth, totalHeight );
/* Insensitive Pixmap */
labelPixmap2 =
XCreatePixmap ( display,
RootWindowOfScreen ( XtScreen ( w ) ),
totalWidth, totalHeight, depth );
/*
* Copy the Xpm-created pixmap into the larger pixmap and
* then draw the string below the pixmap.
*/
XCopyArea ( display, 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 );
}
/* create the stippled insensitive pixmap */
stipple = XCreateBitmapFromData(display, RootWindowOfScreen ( XtScreen ( w ) ),
stippleBitmap, 8, 8);
/* set the stippling values */
stipple_values.foreground = values.background;
stipple_values.fill_style = FillStippled;
stipple_values.stipple = stipple;
XChangeGC ( display, gc,
GCForeground | GCFillStyle | GCStipple,
&stipple_values);
XCopyArea(display, labelPixmap, labelPixmap2, gc,
0, 0, totalWidth, totalHeight, 0, 0);
XFillRectangle(display, labelPixmap2, gc,
0, 0, totalWidth, totalHeight);
/*
* Install the final pixmaps in the widget.
*/
XtVaSetValues ( w,
XmNlabelPixmap, labelPixmap,
XmNlabelInsensitivePixmap, labelPixmap2,
XmNlabelType, XmPIXMAP,
NULL );
/*
* Free the GCs, the initial pixmap, and the string retrieved
* from the label widget.
*/
XFreePixmap ( display, xpmPixmap );
XFreePixmap ( display, stipple );
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);
}
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