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slock-background-image-20220318-1c5a538.diff (5467B)
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1 From 1c5a5383a1cf3351fe9c80a21cfbc98c5ec4355d Mon Sep 17 00:00:00 2001
2 From: Yan Doroshenko <yan1994doroshenko@gmail.com>
3 Date: Fri, 18 Mar 2022 12:28:13 +0100
4 Subject: [PATCH] Provide a way to set a background image
5
6 ---
7 config.def.h | 5 ++++-
8 config.mk | 2 +-
9 slock.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++---
10 3 files changed, 52 insertions(+), 5 deletions(-)
11
12 diff --git a/config.def.h b/config.def.h
13 index 9855e21..eb88b3d 100644
14 --- a/config.def.h
15 +++ b/config.def.h
16 @@ -1,6 +1,6 @@
17 /* user and group to drop privileges to */
18 static const char *user = "nobody";
19 -static const char *group = "nogroup";
20 +static const char *group = "nobody";
21
22 static const char *colorname[NUMCOLS] = {
23 [INIT] = "black", /* after initialization */
24 @@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
25
26 /* treat a cleared input like a wrong password (color) */
27 static const int failonclear = 1;
28 +
29 +/* Background image path, should be available to the user above */
30 +static const char* background_image = "";
31 diff --git a/config.mk b/config.mk
32 index 74429ae..987819e 100644
33 --- a/config.mk
34 +++ b/config.mk
35 @@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
36
37 # includes and libs
38 INCS = -I. -I/usr/include -I${X11INC}
39 -LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
40 +LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
41
42 # flags
43 CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
44 diff --git a/slock.c b/slock.c
45 index 5ae738c..345a279 100644
46 --- a/slock.c
47 +++ b/slock.c
48 @@ -18,6 +18,7 @@
49 #include <X11/keysym.h>
50 #include <X11/Xlib.h>
51 #include <X11/Xutil.h>
52 +#include <Imlib2.h>
53
54 #include "arg.h"
55 #include "util.h"
56 @@ -35,6 +36,7 @@ struct lock {
57 int screen;
58 Window root, win;
59 Pixmap pmap;
60 + Pixmap bgmap;
61 unsigned long colors[NUMCOLS];
62 };
63
64 @@ -46,6 +48,8 @@ struct xrandr {
65
66 #include "config.h"
67
68 +Imlib_Image image;
69 +
70 static void
71 die(const char *errstr, ...)
72 {
73 @@ -190,9 +194,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
74 color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
75 if (running && oldc != color) {
76 for (screen = 0; screen < nscreens; screen++) {
77 - XSetWindowBackground(dpy,
78 - locks[screen]->win,
79 - locks[screen]->colors[color]);
80 + if (locks[screen]->bgmap)
81 + XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
82 + else
83 + XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
84 XClearWindow(dpy, locks[screen]->win);
85 }
86 oldc = color;
87 @@ -235,6 +240,17 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
88 lock->screen = screen;
89 lock->root = RootWindow(dpy, lock->screen);
90
91 + if(image)
92 + {
93 + lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
94 + imlib_context_set_display(dpy);
95 + imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
96 + imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
97 + imlib_context_set_drawable(lock->bgmap);
98 + imlib_render_image_on_drawable(0, 0);
99 + imlib_free_image();
100 + }
101 +
102 for (i = 0; i < NUMCOLS; i++) {
103 XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
104 colorname[i], &color, &dummy);
105 @@ -251,6 +267,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
106 CopyFromParent,
107 DefaultVisual(dpy, lock->screen),
108 CWOverrideRedirect | CWBackPixel, &wa);
109 + if(lock->bgmap)
110 + XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
111 lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
112 invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
113 &color, &color, 0, 0);
114 @@ -355,6 +373,32 @@ main(int argc, char **argv) {
115 if (setuid(duid) < 0)
116 die("slock: setuid: %s\n", strerror(errno));
117
118 + /* Load picture */
119 + Imlib_Image buffer = imlib_load_image(background_image);
120 + imlib_context_set_image(buffer);
121 + int background_image_width = imlib_image_get_width();
122 + int background_image_height = imlib_image_get_height();
123 +
124 + /* Create an image to be rendered */
125 + Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
126 + image = imlib_create_image(scr->width, scr->height);
127 + imlib_context_set_image(image);
128 +
129 + /* Fill the image for every X monitor */
130 + XRRMonitorInfo *monitors;
131 + int number_of_monitors;
132 + monitors = XRRGetMonitors(dpy, RootWindow(dpy, XScreenNumberOfScreen(scr)), True, &number_of_monitors);
133 +
134 + int i;
135 + for (i = 0; i < number_of_monitors; i++) {
136 + 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);
137 + }
138 +
139 + /* Clean up */
140 + imlib_context_set_image(buffer);
141 + imlib_free_image();
142 + imlib_context_set_image(image);
143 +
144 /* check for Xrandr support */
145 rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
146
147 --
148 2.35.1
149