Add xrandrfontsize patch

This commit is contained in:
speedie 2022-09-02 12:32:06 +02:00
parent 7725b40709
commit db0ffb141e
4 changed files with 206 additions and 1 deletions

View file

@ -21,7 +21,7 @@ INCS = -I$(X11INC) \
`$(PKG_CONFIG) --cflags freetype2` \
`$(PKG_CONFIG) --cflags harfbuzz`
LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lgd \
LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lgd -lXrandr \
`$(PKG_CONFIG) --libs fontconfig` \
`$(PKG_CONFIG) --libs freetype2` \
`$(PKG_CONFIG) --libs harfbuzz`

View file

@ -11,6 +11,7 @@ static Shortcut shortcuts[] = {
{ ControlMask, XK_equal, zoom, {.f = +1} },
{ ControlMask, XK_minus, zoom, {.f = -1} },
{ ControlMask, XK_0, zoomreset, {.f = 0} },
{ XK_ANY_MOD, XK_End, refreshxrandr, {.i = 0} },
{ ControlMask, XK_y, clipcopy, {.i = 0} },
{ ControlMask, XK_p, clippaste, {.i = 0} },
{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} },

View file

@ -64,6 +64,19 @@ int allowaltscreen = 1; /* Allow alt screen (1) */
int allowwindowops = 0; /* Allow (insecure) window operations such as setting the clipboard text */
int windowdecorations = 1; /* Display window decoration (1) */
/*
* Override/adjust fontsize of choosen monitors:
*/
MonitorConfig monitors_config[] = {
/* skip = fixed relative points size (monitor dpi) */
/* =0 : fixed absolute pixel size (default screen dpi) */
/* >0 : auto absolute pixel size (monitor dpi) */
/* <0 : auto relative points size (monitor dpi) */
{"HDMI-0~2", -14},
{"LVDS1", -8},
};
float winmovethreshold = 0.6;
/* Cursor options */
/* List of cursor styles:

191
x.c
View file

@ -14,6 +14,7 @@
#include <X11/keysym.h>
#include <X11/Xft/Xft.h>
#include <X11/XKBlib.h>
#include <X11/extensions/Xrandr.h>
#include <X11/Xresource.h>
char *argv0;
@ -68,6 +69,19 @@ enum undercurl_slope_type {
UNDERCURL_SLOPE_BOTTOM_CAP = 3
};
typedef struct {
const char *name;
float defaultfontsize;
} MonitorConfig;
typedef struct {
Atom name;
int x, y, w, h;
float defaultfontsize, usedfontsize;
} MonitorInfo;
static void refreshxrandr(const Arg *dummy);
/* X modifiers */
#define XK_ANY_MOD UINT_MAX
#define XK_NO_MOD 0
@ -259,6 +273,11 @@ static void (*handler[LASTEvent])(XEvent *) = {
[SelectionRequest] = selrequest,
};
static double defaultrelfontsize = 0;
static MonitorInfo *monitors_info = NULL;
static int monitors_num = 0;
static int prev_mindex = -1;
/* Globals */
static DC dc;
static XWindow xw;
@ -2429,6 +2448,144 @@ xseturgency(int add)
XFree(h);
}
static void
cachemonitorinfo()
{
int prev_num = monitors_num;
MonitorInfo *prev_info = monitors_info;
XRRMonitorInfo *xmonitors = XRRGetMonitors(xw.dpy, XRootWindow(xw.dpy, xw.scr), 1, &monitors_num);
if (!monitors_num)
die("xrandr found no monitors");
monitors_info = xmalloc(monitors_num * sizeof(MonitorInfo));
for (int i = 0; i < monitors_num; ++i) {
XRRMonitorInfo *xm = &xmonitors[i];
MonitorInfo *m = &monitors_info[i];
m->name = xm->name;
m->x = xm->x;
m->y = xm->y;
m->w = xm->width;
m->h = xm->height;
float px_mm = ((float)m->w / xm->mwidth + (float)m->h / xm->mheight) / 2;
float px_pt = 25.4 * px_mm / 72;
m->defaultfontsize = defaultrelfontsize * px_pt;
// Override defaultfontsize (dpi) by user config
char *name = XGetAtomName(xw.dpy, xm->name);
for (int j = 0; j < LEN(monitors_config); ++j)
if (!strcmp(name, monitors_config[j].name)) {
m->defaultfontsize = monitors_config[j].defaultfontsize;
if (m->defaultfontsize < 0)
m->defaultfontsize *= -px_pt;
break;
}
// fprintf(stderr, "%s: %fpx, %f\n", name, m->defaultfontsize, m->usedfontsize);
XFree(name);
// Restore usedfontsize (zoom) after re-cache for monitors with the same name
m->usedfontsize = m->defaultfontsize;
for (int j = 0; j < prev_num; ++j)
if (prev_info[j].name == m->name) {
m->usedfontsize = prev_info[j].usedfontsize;
break;
}
}
XRRFreeMonitors(xmonitors);
free(prev_info);
}
static int
getmonitorindex_threshold(int w, int h, int x, int y)
{
int mindex = -1;
float fontsize = 0;
int thresholdarea = winmovethreshold * w * h;
for (int i = 0; i < monitors_num; ++i) {
MonitorInfo *m = &monitors_info[i];
int overlap_w = MAX(0, MIN(x + w, m->x + m->w) - MAX(x, m->x));
int overlap_h = MAX(0, MIN(y + h, m->y + m->h) - MAX(y, m->y));
int area = overlap_w * overlap_h;
// Choose monitor with largest dpi (defaultfontsize)
// from all "mirrored"/overlapped (e.g. projector)
if (area >= thresholdarea && fontsize < m->defaultfontsize) {
fontsize = m->defaultfontsize;
mindex = i;
}
}
return mindex;
}
static int
getmonitorindex_nearest(int w, int h, int x, int y)
{
int mindex = -1;
float fontsize = 0;
int overlaparea = 0;
for (int i = 0; i < monitors_num; ++i) {
MonitorInfo *m = &monitors_info[i];
int overlap_w = MAX(0, MIN(x + w, m->x + m->w) - MAX(x, m->x));
int overlap_h = MAX(0, MIN(y + h, m->y + m->h) - MAX(y, m->y));
int area = overlap_w * overlap_h;
// Choose monitor with largest overlapping area
// e.g. when "st" is initially spawned in-between monitors
if (area > overlaparea) {
overlaparea = area;
mindex = i;
}
}
return mindex;
}
static void
adjustmonitorfontsize(int mindex)
{
if (mindex < 0 || prev_mindex == mindex)
return;
// Save zoom of current monitor before switching
if (prev_mindex >= 0)
monitors_info[prev_mindex].usedfontsize = usedfontsize;
defaultfontsize = monitors_info[mindex].defaultfontsize;
// fprintf(stderr, "Crossing: %fpx\n", defaultfontsize);
// NOTE: do nothing if font size differs by less than 1%
double fontsize = monitors_info[mindex].usedfontsize;
double delta = 0.01 * usedfontsize;
if (!BETWEEN(fontsize - usedfontsize, -delta, delta)) {
// fprintf(stderr, "Adjusted: %fpx\n", fontsize);
xunloadfonts();
xloadfonts(usedfont, fontsize);
}
prev_mindex = mindex;
}
void
refreshxrandr(const Arg *dummy)
{
// Reset index to detect change of window association on "xrandr ... --primary"
// otherwise: zoom won't be saved on switching and new font size won't be loaded
// CRIT!!! event from xrandr may place another monitor into same index
if (prev_mindex >= 0)
monitors_info[prev_mindex].usedfontsize = usedfontsize;
prev_mindex = -1;
XWindowAttributes xattr = {0};
cachemonitorinfo();
XGetWindowAttributes(xw.dpy, xw.win, &xattr);
int mindex = getmonitorindex_threshold(xattr.width, xattr.height, xattr.x, xattr.y);
if (mindex < 0)
mindex = getmonitorindex_nearest(xattr.width, xattr.height, xattr.x, xattr.y);
adjustmonitorfontsize(mindex);
}
void
xbell(void)
{
@ -2578,6 +2735,14 @@ cmessage(XEvent *e)
void
resize(XEvent *e)
{
// BAD: no resize on monitor plug/unplug/reconfigure -- until window itself is kept in the same place
// NOTE: no resize event on zoomabs()
// fprintf(stderr, "Resize: %dx%d+%d+%d\n",
// e->xconfigure.width, e->xconfigure.height, e->xconfigure.x, e->xconfigure.y);
adjustmonitorfontsize(getmonitorindex_threshold(
e->xconfigure.width, e->xconfigure.height, e->xconfigure.x, e->xconfigure.y));
if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
return;
@ -2613,6 +2778,22 @@ run(void)
}
} while (ev.type != MapNotify);
int rr_event_base, rr_error_base, rr_major, rr_minor;
if (!XRRQueryExtension (xw.dpy, &rr_event_base, &rr_error_base) ||
!XRRQueryVersion (xw.dpy, &rr_major, &rr_minor) ||
rr_major < 1 || (rr_major == 1 && rr_minor < 5))
{
die("RandR 1.5 extension isn't available\n");
}
XRRSelectInput(xw.dpy, xw.win, RRCrtcChangeNotifyMask);
// WARN: can query actual window size/pos only after window is mapped and its width/height are adjusted by WM
// * x/y are WM-dependent and can't be determined beforehand anyway
// * defaultfontsize isn't available until font is loaded and actual Fc*() size queried
// BAD: fonts on startup are always reloaded -- how to specify their size beforehand ?
FcPatternGetDouble(dc.font.match->pattern, FC_SIZE, 0, &defaultrelfontsize);
refreshxrandr(0);
ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
cresize(w, h);
@ -2645,6 +2826,16 @@ run(void)
XNextEvent(xw.dpy, &ev);
if (XFilterEvent(&ev, None))
continue;
if (LASTEvent <= ev.type) {
if (rr_event_base + RRNotify == ev.type &&
RRNotify_CrtcChange == ((XRRNotifyEvent *)&ev)->subtype)
{
XRRUpdateConfiguration(&ev);
// fprintf(stderr, "Monitor change: %d > %d\n", rr_event_base, LASTEvent);
refreshxrandr(0);
}
continue;
}
if (handler[ev.type])
(handler[ev.type])(&ev);
}