slock-background-image-20220318-1c5a538.diff (5467B)
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