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$NetBSD: patch-an,v 1.1 2001/04/05 13:57:16 wiz Exp $
--- xvdial.c.orig Tue Jan 3 22:20:31 1995
+++ xvdial.c Sun Nov 14 14:05:49 1999
@@ -45,16 +45,17 @@
static void drawArrow PARM((DIAL *));
static void drawValStr PARM((DIAL *));
static void drawButt PARM((DIAL *, int, int));
-static int computeDialVal PARM((DIAL *, int, int));
+static double computeDialVal PARM((DIAL *, int, int));
static void dimDial PARM((DIAL *));
/***************************************************/
-void DCreate(dp, parent, x, y, w, h, minv, maxv, curv, page,
+void DCreate(dp, parent, x, y, w, h, minv, maxv, curv, inc, page,
fg, bg, hi, lo, title, units)
DIAL *dp;
Window parent;
-int x,y,w,h,minv,maxv,curv,page;
+int x,y,w,h;
+double minv,maxv,curv,inc,page;
unsigned long fg,bg,hi,lo;
char *title, *units;
{
@@ -98,18 +99,18 @@
1,fg,bg);
if (!dp->win) FatalError("can't create dial window");
- DSetRange(dp, minv, maxv, curv, page);
+ DSetRange(dp, minv, maxv, curv, inc, page);
XSelectInput(theDisp, dp->win, ExposureMask | ButtonPressMask);
}
/***************************************************/
-void DSetRange(dp, minv, maxv, curv, page)
+void DSetRange(dp, minv, maxv, curv, inc, page)
DIAL *dp;
-int minv, maxv, curv, page;
+double minv, maxv, curv, inc, page;
{
if (maxv<minv) maxv=minv;
- dp->min = minv; dp->max = maxv; dp->page = page;
+ dp->min = minv; dp->max = maxv; dp->inc = inc; dp->page = page;
dp->active = (minv < maxv);
DSetVal(dp, curv);
@@ -119,7 +120,7 @@
/***************************************************/
void DSetVal(dp, curv)
DIAL *dp;
-int curv;
+double curv;
{
RANGE(curv, dp->min, dp->max); /* make sure curv is in-range */
@@ -129,7 +130,7 @@
XSetForeground(theDisp, theGC, dp->bg);
drawArrow(dp);
- dp->val = curv;
+ dp->val = (double)((int)(curv / dp->inc + (curv > 0 ? 0.5 : -0.5))) * dp->inc;
/* draw new arrow and string */
XSetForeground(theDisp, theGC, dp->fg);
@@ -202,7 +203,8 @@
int mx,my;
{
Window rW,cW;
- int rx,ry, x,y, ipos, pos, lit, i, origval;
+ int rx, ry, x, y, ipos, pos, lit;
+ double origval;
unsigned int mask;
lit = 0;
@@ -224,9 +226,9 @@
if (ipos != INDIAL) {
drawButt(dp, ipos, 1);
switch (ipos) {
- case INCW1: if (dp->val < dp->max) DSetVal(dp, dp->val+1); break;
+ case INCW1: if (dp->val < dp->max) DSetVal(dp, dp->val+dp->inc); break;
case INCW2: if (dp->val < dp->max) DSetVal(dp, dp->val+dp->page); break;
- case INCCW1: if (dp->val > dp->min) DSetVal(dp, dp->val-1); break;
+ case INCCW1: if (dp->val > dp->min) DSetVal(dp, dp->val-dp->inc); break;
case INCCW2: if (dp->val > dp->min) DSetVal(dp, dp->val-dp->page); break;
}
if (dp->drawobj != NULL) (dp->drawobj)();
@@ -235,8 +237,9 @@
}
else {
- i = computeDialVal(dp, mx, my);
- DSetVal(dp, i);
+ double v;
+ v = computeDialVal(dp, mx, my);
+ DSetVal(dp, v);
if (dp->drawobj != NULL) (dp->drawobj)();
}
@@ -246,11 +249,11 @@
if (!(mask & Button1Mask)) break; /* button released */
if (ipos == INDIAL) {
- int j;
- i = computeDialVal(dp, x, y);
- j = dp->val;
- DSetVal(dp, i);
- if (j != dp->val) {
+ double v, w;
+ v = computeDialVal(dp, x, y);
+ w = dp->val;
+ DSetVal(dp, v);
+ if (w != dp->val) {
/* track whatever dial controls */
if (dp->drawobj != NULL) (dp->drawobj)();
}
@@ -266,11 +269,11 @@
if (lit) {
switch (ipos) {
- case INCW1: if (dp->val < dp->max) DSetVal(dp, dp->val+1);
+ case INCW1: if (dp->val < dp->max) DSetVal(dp, dp->val+dp->inc);
break;
case INCW2: if (dp->val < dp->max) DSetVal(dp, dp->val+dp->page);
break;
- case INCCW1: if (dp->val > dp->min) DSetVal(dp, dp->val-1);
+ case INCCW1: if (dp->val > dp->min) DSetVal(dp, dp->val-dp->inc);
break;
case INCCW2: if (dp->val > dp->min) DSetVal(dp, dp->val-dp->page);
break;
@@ -320,19 +323,20 @@
static void drawArrow(dp)
DIAL *dp;
{
- int i, rad, cx, cy;
+ int rad, cx, cy;
+ double v;
XPoint arrow[4];
rad = dp->rad; cx = dp->cx; cy = dp->cy;
/* map pos (range minv..maxv) into degrees (range 240..-60) */
- i = 240 + (-300 * (dp->val - dp->min)) / (dp->max - dp->min);
- arrow[0].x = cx + (int) ((double) rad * .80 * cos(i * DEG2RAD));
- arrow[0].y = cy - (int) ((double) rad * .80 * sin(i * DEG2RAD));
- arrow[1].x = cx + (int) ((double) rad * .33 * cos((i+160) * DEG2RAD));
- arrow[1].y = cy - (int) ((double) rad * .33 * sin((i+160) * DEG2RAD));
- arrow[2].x = cx + (int) ((double) rad * .33 * cos((i-160) * DEG2RAD));
- arrow[2].y = cy - (int) ((double) rad * .33 * sin((i-160) * DEG2RAD));
+ v = 240 + (-300 * (dp->val - dp->min)) / (dp->max - dp->min);
+ arrow[0].x = cx + (int) ((double) rad * .80 * cos(v * DEG2RAD));
+ arrow[0].y = cy - (int) ((double) rad * .80 * sin(v * DEG2RAD));
+ arrow[1].x = cx + (int) ((double) rad * .33 * cos((v+160) * DEG2RAD));
+ arrow[1].y = cy - (int) ((double) rad * .33 * sin((v+160) * DEG2RAD));
+ arrow[2].x = cx + (int) ((double) rad * .33 * cos((v-160) * DEG2RAD));
+ arrow[2].y = cy - (int) ((double) rad * .33 * sin((v-160) * DEG2RAD));
arrow[3].x = arrow[0].x;
arrow[3].y = arrow[0].y;
XDrawLines(theDisp, dp->win, theGC, arrow, 4, CoordModeOrigin);
@@ -343,23 +347,37 @@
static void drawValStr(dp)
DIAL *dp;
{
- int i, x1, x2;
+ int tot, i, x1, x2;
char foo[60], foo1[60];
/* compute longest string necessary so we can right-align this thing */
- sprintf(foo,"%d",dp->min); x1 = strlen(foo);
- sprintf(foo,"%d",dp->max); x2 = strlen(foo);
+ sprintf(foo,"%d",(int)dp->min); x1 = strlen(foo);
+ sprintf(foo,"%d",(int)dp->max); x2 = strlen(foo);
if (dp->min < 0 && dp->max > 0) x2++; /* put '+' at beginning */
i = x1; if (x2>x1) i = x2;
if (dp->units) i += strlen(dp->units);
- if (dp->min < 0 && dp->max > 0) sprintf(foo,"%+d", dp->val);
- else sprintf(foo,"%d", dp->val);
+ sprintf(foo,"%g",dp->inc); /* space for decimal values */
+ tot = i + strlen(foo) - 1; /* Take away the 0 from the beginning */
+
+ if (dp->min < 0.0 && dp->max > 0.0) sprintf(foo,"%+g", dp->val);
+ else sprintf(foo,"%g", dp->val);
+
+ if (dp->inc < 1.0)
+ {
+ int j;
+
+ if (dp->val == (double)((int)dp->val))
+ strcat(foo,".");
+
+ for (j = strlen(foo); j < tot; j++)
+ strcat(foo,"0");
+ }
if (dp->units) strcat(foo,dp->units);
foo1[0] = '\0';
if (strlen(foo) < (size_t) i) {
- for (i = i - strlen(foo); i>0; i--) strcat(foo1," ");
+ for (i-=strlen(foo);i>0;i--) strcat(foo1," ");
}
strcat(foo1, foo);
@@ -411,12 +429,13 @@
/***************************************************/
-static int computeDialVal(dp, x, y)
+static double computeDialVal(dp, x, y)
DIAL *dp;
int x, y;
{
- int dx, dy, val;
- double angle;
+ int dx, dy;
+
+ double angle, val;
/* compute dx, dy (distance from cx, cy). Note: +dy is *up* */
dx = x - dp->cx; dy = dp->cy - y;
@@ -436,8 +455,10 @@
if (angle > 270.0) angle -= 360.0;
if (angle < -90.0) angle += 360.0;
- val = (int) ((dp->max - dp->min) * (240.0 - angle) / 300.0) + dp->min;
+ val = ((dp->max - dp->min) * (240.0 - angle) / 300.0) + dp->min;
+ /* round value to be an even multiple of dp->inc */
+ val = (double)((int)(val / dp->inc + 0.5)) * dp->inc;
return val;
}
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