[wiki] [sites] Add a background-image patch || Yan Doroshenko

From: <git_AT_suckless.org>
Date: Fri, 18 Mar 2022 12:44:53 +0100

commit 971e75ac7958c938af7b3dbb2a4da25ba2a13688
Author: Yan Doroshenko <yan1994doroshenko_AT_gmail.com>
Date: Fri Mar 18 12:44:17 2022 +0100

    Add a background-image patch

diff --git a/tools.suckless.org/slock/patches/background-image/index.md b/tools.suckless.org/slock/patches/background-image/index.md
new file mode 100644
index 00000000..f50cebf3
--- /dev/null
+++ b/tools.suckless.org/slock/patches/background-image/index.md
_AT_@ -0,0 +1,17 @@
+Control Clear
+=============
+
+Description
+-----------
+
+This patch allows you to specify the background image using the `background_image` configuration. The image is drawn separately on every monitor according to its size.
+
+> Note: The image file should be accessible by the specified user
+
+Download
+--------
+* [slock-background-image-20220318-1c5a538.diff](slock-background-image-20220318-1c5a538.diff)
+
+Author
+------
+* Yan Doroshenko - <yandoroshenko_AT_protonmail.com>
diff --git a/tools.suckless.org/slock/patches/background-image/slock-background-image-20220318-1c5a538.diff b/tools.suckless.org/slock/patches/background-image/slock-background-image-20220318-1c5a538.diff
new file mode 100644
index 00000000..2d4caf45
--- /dev/null
+++ b/tools.suckless.org/slock/patches/background-image/slock-background-image-20220318-1c5a538.diff
_AT_@ -0,0 +1,149 @@
+From 1c5a5383a1cf3351fe9c80a21cfbc98c5ec4355d Mon Sep 17 00:00:00 2001
+From: Yan Doroshenko <yan1994doroshenko_AT_gmail.com>
+Date: Fri, 18 Mar 2022 12:28:13 +0100
+Subject: [PATCH] Provide a way to set a background image
+
+---
+ config.def.h | 5 ++++-
+ config.mk | 2 +-
+ slock.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++---
+ 3 files changed, 52 insertions(+), 5 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9855e21..eb88b3d 100644
+--- a/config.def.h
++++ b/config.def.h
+_AT_@ -1,6 +1,6 @@
+ /* user and group to drop privileges to */
+ static const char *user = "nobody";
+-static const char *group = "nogroup";
++static const char *group = "nobody";
+
+ static const char *colorname[NUMCOLS] = {
+ [INIT] = "black", /* after initialization */
+_AT_@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* Background image path, should be available to the user above */
++static const char* background_image = "";
+diff --git a/config.mk b/config.mk
+index 74429ae..987819e 100644
+--- a/config.mk
++++ b/config.mk
+_AT_@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
+
+ # includes and libs
+ INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
+
+ # flags
+ CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+diff --git a/slock.c b/slock.c
+index 5ae738c..345a279 100644
+--- a/slock.c
++++ b/slock.c
+_AT_@ -18,6 +18,7 @@
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <Imlib2.h>
+
+ #include "arg.h"
+ #include "util.h"
+_AT_@ -35,6 +36,7 @@ struct lock {
+ int screen;
+ Window root, win;
+ Pixmap pmap;
++ Pixmap bgmap;
+ unsigned long colors[NUMCOLS];
+ };
+
+_AT_@ -46,6 +48,8 @@ struct xrandr {
+
+ #include "config.h"
+
++Imlib_Image image;
++
+ static void
+ die(const char *errstr, ...)
+ {
+_AT_@ -190,9 +194,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+ if (running && oldc != color) {
+ for (screen = 0; screen < nscreens; screen++) {
+- XSetWindowBackground(dpy,
+- locks[screen]->win,
+- locks[screen]->colors[color]);
++ if (locks[screen]->bgmap)
++ XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
++ else
++ XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
+ XClearWindow(dpy, locks[screen]->win);
+ }
+ oldc = color;
+_AT_@ -235,6 +240,17 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ lock->screen = screen;
+ lock->root = RootWindow(dpy, lock->screen);
+
++ if(image)
++ {
++ lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
++ imlib_context_set_display(dpy);
++ imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
++ imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
++ imlib_context_set_drawable(lock->bgmap);
++ imlib_render_image_on_drawable(0, 0);
++ imlib_free_image();
++ }
++
+ for (i = 0; i < NUMCOLS; i++) {
+ XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
+ colorname[i], &color, &dummy);
+_AT_@ -251,6 +267,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ CopyFromParent,
+ DefaultVisual(dpy, lock->screen),
+ CWOverrideRedirect | CWBackPixel, &wa);
++ if(lock->bgmap)
++ XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
+ lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
+ invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
+ &color, &color, 0, 0);
+_AT_@ -355,6 +373,32 @@ main(int argc, char **argv) {
+ if (setuid(duid) < 0)
+ die("slock: setuid: %s
", strerror(errno));
+
++ /* Load picture */
++ Imlib_Image buffer = imlib_load_image(background_image);
++ imlib_context_set_image(buffer);
++ int background_image_width = imlib_image_get_width();
++ int background_image_height = imlib_image_get_height();
++
++ /* Create an image to be rendered */
++ Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
++ image = imlib_create_image(scr->width, scr->height);
++ imlib_context_set_image(image);
++
++ /* Fill the image for every X monitor */
++ XRRMonitorInfo *monitors;
++ int number_of_monitors;
++ monitors = XRRGetMonitors(dpy, RootWindow(dpy, XScreenNumberOfScreen(scr)), True, &number_of_monitors);
++
++ int i;
++ for (i = 0; i < number_of_monitors; i++) {
++ imlib_blend_image_onto_image(buffer, 0, 0, 0, background_image_width, background_image_height, monitors[i].x, monitors[i].y, monitors[i].width, monitors[i].height);
++ }
++
++ /* Clean up */
++ imlib_context_set_image(buffer);
++ imlib_free_image();
++ imlib_context_set_image(image);
++
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+--
+2.35.1
+
Received on Fri Mar 18 2022 - 12:44:53 CET