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/*
* Bitmap image handling functions
*
* These are what's called "XBM", and represented by the Pixmap X data
* type (which has noting to do with "XPM" X PixMaps, just to confuse
* you). This is the format used for various builtin images, buttons,
* and cursors, and is also the fallback type for any user-specified
* images. Assuming any user has made and specified an XBM since the
* 1980's.
*/
#include "ctwm.h"
#include <X11/Xmu/Drawing.h>
#include "screen.h"
#include "util.h"
#include "image.h"
#include "image_bitmap.h"
#include "image_bitmap_builtin.h"
/* Shared with cursor.c for bitmap cursors */
int HotX, HotY;
static Image *LoadBitmapImage(const char *name, ColorPair cp);
static Pixmap FindBitmap(const char *name, unsigned int *widthp,
unsigned int *heightp);
/*
* External API's
*/
/* Simple load-by-name */
Pixmap
GetBitmap(const char *name)
{
return FindBitmap(name, &JunkWidth, &JunkHeight);
}
/*
* Load with FG/BG adjusted to given colorpair
*/
Image *
GetBitmapImage(const char *name, ColorPair cp)
{
/* Non-animated */
if(! strchr(name, '%')) {
return (LoadBitmapImage(name, cp));
}
/* Animated */
return get_image_anim_cp(name, cp, LoadBitmapImage);
}
/*
* Internal bits used by the above
*/
/***********************************************************************
*
* Procedure:
* FindBitmap - read in a bitmap file and return size
*
* Returned Value:
* the pixmap associated with the bitmap
* widthp - pointer to width of bitmap
* heightp - pointer to height of bitmap
*
* Inputs:
* name - the filename to read
*
***********************************************************************
*/
static Pixmap
FindBitmap(const char *name, unsigned int *widthp,
unsigned int *heightp)
{
char *bigname;
Pixmap pm;
if(!name) {
return None;
}
/*
* Names of the form :name refer to hardcoded images that are scaled to
* look nice in title buttons. Eventually, it would be nice to put in a
* menu symbol as well....
*/
if(name[0] == ':') {
return get_builtin_plain_pixmap(name, widthp, heightp);
}
/*
* Generate a full pathname with any special prefix characters (such
* as ~) expanded.
*/
bigname = ExpandFilename(name);
if(!bigname) {
/* Something failed bad */
return None;
}
/*
* look along bitmapFilePath resource same as toolkit clients
*/
pm = XmuLocateBitmapFile(ScreenOfDisplay(dpy, Scr->screen), bigname, NULL,
0, (int *)widthp, (int *)heightp, &HotX, &HotY);
if(pm == None && Scr->IconDirectory && bigname[0] != '/') {
/*
* Didn't find it. Attempt to find icon in old IconDirectory
* (now obsolete)
*/
free(bigname);
asprintf(&bigname, "%s/%s", Scr->IconDirectory, name);
if(XReadBitmapFile(dpy, Scr->Root, bigname, widthp, heightp, &pm,
&HotX, &HotY) != BitmapSuccess) {
pm = None;
}
}
free(bigname);
if((pm == None) && reportfilenotfound) {
fprintf(stderr, "%s: unable to find bitmap \"%s\"\n", ProgramName, name);
}
return pm;
}
static Image *
LoadBitmapImage(const char *name, ColorPair cp)
{
Image *image;
Pixmap bm;
unsigned int width, height;
XGCValues gcvalues;
if(Scr->rootGC == (GC) 0) {
Scr->rootGC = XCreateGC(dpy, Scr->Root, 0, &gcvalues);
}
bm = FindBitmap(name, &width, &height);
if(bm == None) {
return NULL;
}
image = AllocImage();
image->pixmap = XCreatePixmap(dpy, Scr->Root, width, height, Scr->d_depth);
gcvalues.background = cp.back;
gcvalues.foreground = cp.fore;
XChangeGC(dpy, Scr->rootGC, GCForeground | GCBackground, &gcvalues);
XCopyPlane(dpy, bm, image->pixmap, Scr->rootGC, 0, 0, width, height,
0, 0, (unsigned long) 1);
XFreePixmap(dpy, bm);
image->width = width;
image->height = height;
return image;
}
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