From 9d7c5bdf7bb04c368d1819224b6f6c1e6ba5d9ee Mon Sep 17 00:00:00 2001
From: "John Ankarstr\\xf6m" <john@ankarstrom.se>
Date: Tue, 1 Jun 2021 21:52:23 +0200
Subject: Add custom 'alertFontList', 'alertForeground' resources

---
 xbattext.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 57 insertions(+), 11 deletions(-)

diff --git a/xbattext.c b/xbattext.c
index efa7aa4..ec4a673 100644
--- a/xbattext.c
+++ b/xbattext.c
@@ -9,7 +9,15 @@
  *     LDFLAGS += -Wl,-R/usr/X11R7/lib -Wl,-R/usr/pkg/lib
  *
  *  It requires x11/motif to be installed.
- *  The fontList resource controls the font used.
+ *
+ *  The program uses the following resources:
+ *
+ *      xbattext*fontList		= normal font
+ *      xbattext*foreground		= normal text color
+ *      xbattext*alertFontList		= font when battery is low
+ *      xbattext*alertForeground	= text color when battery is low
+ *
+ *  Set their values in ~/.Xdefaults to customize xbattext.
  *
  *  xbattext is written by John Ankarstr\xf6m <john@ankarstrom.se> and
  *  is released into the public domain; do whatever you want with it.
@@ -36,12 +44,31 @@
 
 void update(XtPointer, XtIntervalId *);
 
+/* resources */
+struct _res {
+	XmFontList font_list;
+	XmFontList alert_font_list;
+	Pixel foreground;
+	Pixel alert_foreground;
+} res;
+static XtResource res_opts[] = {
+	{"fontList", "FontList", XmRFontList, sizeof(XmFontList),
+	XtOffset(struct _res*, font_list), XtRImmediate, (caddr_t)NULL},
+	{"foreground", "foreground", XmRPixel, sizeof(Pixel),
+	XtOffset(struct _res*, foreground), XtRImmediate, (caddr_t)NULL},
+	{"alertFontList", "AlertFontList", XmRFontList, sizeof(XmFontList),
+	XtOffset(struct _res*, alert_font_list), XtRImmediate, (caddr_t)NULL},
+	{"alertForeground", "AlertForeground", XmRPixel, sizeof(Pixel),
+	XtOffset(struct _res*, alert_foreground), XtRImmediate, (caddr_t)NULL},
+};
+
 /* application state */
 Arg wargs[10];
 char *s;
 int apmfd, alert;
 struct apm_power_info info;
 Widget toplevel, label;
+XmFontList font_list;
 XmString str;
 XtAppContext app_context;
 XtIntervalId timer = 0;
@@ -65,6 +92,10 @@ main(int argc, char* argv[])
 
 	XtSetLanguageProc(NULL, NULL, NULL);
 
+	/* load application resources */
+	XtGetApplicationResources(toplevel,
+		&res, res_opts, XtNumber(res_opts), NULL, 0);
+
 	/* create motif label */
 	label = XtVaCreateManagedWidget("text",
 		xmLabelWidgetClass, toplevel,
@@ -81,6 +112,8 @@ main(int argc, char* argv[])
 void
 update(XtPointer client_data, XtIntervalId *t)
 {
+	int i;
+
 	/* remove current timer */
 	if (t == NULL && timer) {
 		XtRemoveTimeOut(timer);
@@ -99,20 +132,33 @@ update(XtPointer client_data, XtIntervalId *t)
 	sprintf(s, "%d%%", info.battery_life);
 	str = XmStringCreate(s, XmFONTLIST_DEFAULT_TAG);
 
+	i = 0;
 #ifdef ALERT
 	if (!alert && info.battery_life < ALERT) {
-		XtVaSetValues(label,
-			XmNlabelString, str,
-			XtVaTypedArg, XtNforeground, XtRString, "red", 4,
-			NULL);
 		alert = 1;
+		XtSetArg(wargs[i], XmNlabelString, str); i++;
+		if (res.alert_foreground != -1) {
+			XtSetArg(wargs[i], XtNforeground, res.alert_foreground);
+			i++;
+		}
+		if (res.alert_font_list != NULL) {
+			XtSetArg(wargs[i], XmNfontList, res.alert_font_list);
+			i++;
+		}
+		XtSetValues(label, wargs, i);
 	}
-	else if (alert && info.battery_life > ALERT) {
-		XtVaSetValues(label,
-			XmNlabelString, str,
-			XtVaTypedArg, XtNforeground, XtRString, "black", 6,
-			NULL);
-		alert = 0;
+	else if (alert && info.battery_life >= ALERT) {
+		alert = 1;
+		XtSetArg(wargs[i], XmNlabelString, str); i++;
+		if (res.foreground != -1) {
+			XtSetArg(wargs[i], XtNforeground, res.foreground);
+			i++;
+		}
+		if (res.font_list != NULL) {
+			XtSetArg(wargs[i], XmNfontList, res.font_list);
+			i++;
+		}
+		XtSetValues(label, wargs, i);
 	}
 	else
 #endif
-- 
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