st-background-image-0.8.5.diff - sites - public wiki contents of suckless.org | |
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st-background-image-0.8.5.diff (7079B) | |
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1 From 4ce17bbc340ca1f93f9be686f4a796797f9ca6d5 Mon Sep 17 00:00:00 2001 | |
2 From: Matthias Schoth <[email protected]> | |
3 Date: Sat, 16 Apr 2022 14:21:22 +0200 | |
4 Subject: [PATCH] Implements background image and pseudo transparancy sup… | |
5 | |
6 --- | |
7 config.def.h | 8 +++ | |
8 x.c | 141 +++++++++++++++++++++++++++++++++++++++++++++++---- | |
9 2 files changed, 139 insertions(+), 10 deletions(-) | |
10 | |
11 diff --git a/config.def.h b/config.def.h | |
12 index 91ab8ca..ad19e3d 100644 | |
13 --- a/config.def.h | |
14 +++ b/config.def.h | |
15 @@ -8,6 +8,14 @@ | |
16 static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohi… | |
17 static int borderpx = 2; | |
18 | |
19 +/* | |
20 + * background image | |
21 + * expects farbfeld format | |
22 + * pseudo transparency fixes coordinates to the screen origin | |
23 + */ | |
24 +static const char *bgfile = "/path/to/image.ff"; | |
25 +static const int pseudotransparency = 0; | |
26 + | |
27 /* | |
28 * What program is execed by st depends of these precedence rules: | |
29 * 1: program passed with -e | |
30 diff --git a/x.c b/x.c | |
31 index 8a16faa..fedef53 100644 | |
32 --- a/x.c | |
33 +++ b/x.c | |
34 @@ -14,6 +14,7 @@ | |
35 #include <X11/keysym.h> | |
36 #include <X11/Xft/Xft.h> | |
37 #include <X11/XKBlib.h> | |
38 +#include <arpa/inet.h> | |
39 | |
40 char *argv0; | |
41 #include "arg.h" | |
42 @@ -81,6 +82,7 @@ typedef XftGlyphFontSpec GlyphFontSpec; | |
43 typedef struct { | |
44 int tw, th; /* tty width and height */ | |
45 int w, h; /* window width and height */ | |
46 + int x, y; /* window location */ | |
47 int ch; /* char height */ | |
48 int cw; /* char width */ | |
49 int mode; /* window state/mode flags */ | |
50 @@ -101,6 +103,7 @@ typedef struct { | |
51 XVaNestedList spotlist; | |
52 } ime; | |
53 Draw draw; | |
54 + GC bggc; /* Graphics Context for background */ | |
55 Visual *vis; | |
56 XSetWindowAttributes attrs; | |
57 int scr; | |
58 @@ -151,6 +154,9 @@ static void ximinstantiate(Display *, XPointer, XPoi… | |
59 static void ximdestroy(XIM, XPointer, XPointer); | |
60 static int xicdestroy(XIC, XPointer, XPointer); | |
61 static void xinit(int, int); | |
62 +static void updatexy(void); | |
63 +static XImage *loadff(const char *); | |
64 +static void bginit(); | |
65 static void cresize(int, int); | |
66 static void xresize(int, int); | |
67 static void xhints(void); | |
68 @@ -504,6 +510,12 @@ propnotify(XEvent *e) | |
69 xpev->atom == clipboard)) { | |
70 selnotify(e); | |
71 } | |
72 + | |
73 + if (pseudotransparency && | |
74 + !strncmp(XGetAtomName(xw.dpy, e->xproperty.atom), "_NET_WM_… | |
75 + updatexy(); | |
76 + redraw(); | |
77 + } | |
78 } | |
79 | |
80 void | |
81 @@ -534,7 +546,8 @@ selnotify(XEvent *e) | |
82 return; | |
83 } | |
84 | |
85 - if (e->type == PropertyNotify && nitems == 0 && rem == … | |
86 + if (e->type == PropertyNotify && nitems == 0 && rem == … | |
87 + !pseudotransparency) { | |
88 /* | |
89 * If there is some PropertyNotify with no data… | |
90 * this is the signal of the selection owner th… | |
91 @@ -552,9 +565,11 @@ selnotify(XEvent *e) | |
92 * when the selection owner does send us the ne… | |
93 * chunk of data. | |
94 */ | |
95 - MODBIT(xw.attrs.event_mask, 1, PropertyChangeMa… | |
96 - XChangeWindowAttributes(xw.dpy, xw.win, CWEvent… | |
97 + if (!pseudotransparency) { | |
98 + MODBIT(xw.attrs.event_mask, 1, Property… | |
99 + XChangeWindowAttributes(xw.dpy, xw.win,… | |
100 &xw.attrs); | |
101 + } | |
102 | |
103 /* | |
104 * Deleting the property is the transfer start … | |
105 @@ -835,9 +850,9 @@ xsetcolorname(int x, const char *name) | |
106 void | |
107 xclear(int x1, int y1, int x2, int y2) | |
108 { | |
109 - XftDrawRect(xw.draw, | |
110 - &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defau… | |
111 - x1, y1, x2-x1, y2-y1); | |
112 + if (pseudotransparency) | |
113 + XSetTSOrigin(xw.dpy, xw.bggc, -win.x, -win.y); | |
114 + XFillRectangle(xw.dpy, xw.buf, xw.bggc, x1, y1, x2-x1, y2-y1); | |
115 } | |
116 | |
117 void | |
118 @@ -1223,6 +1238,100 @@ xinit(int cols, int rows) | |
119 xsel.xtarget = XA_STRING; | |
120 } | |
121 | |
122 +void | |
123 +updatexy() | |
124 +{ | |
125 + Window child; | |
126 + XTranslateCoordinates(xw.dpy, xw.win, DefaultRootWindow(xw.dpy)… | |
127 + &win.x, &win.y, &child); | |
128 +} | |
129 + | |
130 +/* | |
131 + * load farbfeld file to XImage | |
132 + */ | |
133 +XImage* | |
134 +loadff(const char *filename) | |
135 +{ | |
136 + uint32_t i, hdr[4], w, h, size; | |
137 + uint64_t *data; | |
138 + FILE *f = fopen(filename, "rb"); | |
139 + | |
140 + if (f == NULL) { | |
141 + fprintf(stderr, "Can not open background image file\n"); | |
142 + return NULL; | |
143 + } | |
144 + | |
145 + if (fread(hdr, sizeof(*hdr), LEN(hdr), f) != LEN(hdr)) | |
146 + if (ferror(f)) { | |
147 + fprintf(stderr, "fread:"); | |
148 + return NULL; | |
149 + } | |
150 + else { | |
151 + fprintf(stderr, "fread: Unexpected end of file\… | |
152 + return NULL; | |
153 + } | |
154 + | |
155 + if (memcmp("farbfeld", hdr, sizeof("farbfeld") - 1)) { | |
156 + fprintf(stderr, "Invalid magic value\n"); | |
157 + return NULL; | |
158 + } | |
159 + | |
160 + w = ntohl(hdr[2]); | |
161 + h = ntohl(hdr[3]); | |
162 + size = w * h; | |
163 + data = malloc(size * sizeof(uint64_t)); | |
164 + | |
165 + if (fread(data, sizeof(uint64_t), size, f) != size) | |
166 + if (ferror(f)) { | |
167 + fprintf(stderr, "fread:"); | |
168 + return NULL; | |
169 + } | |
170 + else { | |
171 + fprintf(stderr, "fread: Unexpected end of file\… | |
172 + return NULL; | |
173 + } | |
174 + | |
175 + fclose(f); | |
176 + | |
177 + for (i = 0; i < size; i++) | |
178 + data[i] = (data[i] & 0x00000000000000FF) << 16 | | |
179 + (data[i] & 0x0000000000FF0000) >> 8 | | |
180 + (data[i] & 0x000000FF00000000) >> 32; | |
181 + | |
182 + XImage *xi = XCreateImage(xw.dpy, DefaultVisual(xw.dpy, xw.scr), | |
183 + DefaultDepth(xw.dpy, xw.scr), ZPixm… | |
184 + (char *)data, w, h, 32, w * 8); | |
185 + xi->bits_per_pixel = 64; | |
186 + return xi; | |
187 +} | |
188 + | |
189 +/* | |
190 + * initialize background image | |
191 + */ | |
192 +void | |
193 +bginit() | |
194 +{ | |
195 + XGCValues gcvalues; | |
196 + Drawable bgimg; | |
197 + XImage *bgxi = loadff(bgfile); | |
198 + | |
199 + memset(&gcvalues, 0, sizeof(gcvalues)); | |
200 + xw.bggc = XCreateGC(xw.dpy, xw.win, 0, &gcvalues); | |
201 + if (!bgxi) return; | |
202 + bgimg = XCreatePixmap(xw.dpy, xw.win, bgxi->width, bgxi->height, | |
203 + DefaultDepth(xw.dpy, xw.scr)); | |
204 + XPutImage(xw.dpy, bgimg, dc.gc, bgxi, 0, 0, 0, 0, bgxi->width, | |
205 + bgxi->height); | |
206 + XDestroyImage(bgxi); | |
207 + XSetTile(xw.dpy, xw.bggc, bgimg); | |
208 + XSetFillStyle(xw.dpy, xw.bggc, FillTiled); | |
209 + if (pseudotransparency) { | |
210 + updatexy(); | |
211 + MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask); | |
212 + XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &x… | |
213 + } | |
214 +} | |
215 + | |
216 int | |
217 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int l… | |
218 { | |
219 @@ -1463,7 +1572,10 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs… | |
220 xclear(winx, winy + win.ch, winx + width, win.h); | |
221 | |
222 /* Clean up the region we want to draw to. */ | |
223 - XftDrawRect(xw.draw, bg, winx, winy, width, win.ch); | |
224 + if (bg == &dc.col[defaultbg]) | |
225 + xclear(winx, winy, winx + width, winy + win.ch); | |
226 + else | |
227 + XftDrawRect(xw.draw, bg, winx, winy, width, win.ch); | |
228 | |
229 /* Set the clip region because Xft is sometimes dirty. */ | |
230 r.x = 0; | |
231 @@ -1886,9 +1998,17 @@ cmessage(XEvent *e) | |
232 void | |
233 resize(XEvent *e) | |
234 { | |
235 - if (e->xconfigure.width == win.w && e->xconfigure.height == win… | |
236 - return; | |
237 - | |
238 + if (pseudotransparency) { | |
239 + if (e->xconfigure.width == win.w && | |
240 + e->xconfigure.height == win.h && | |
241 + e->xconfigure.x == win.x && e->xconfigure.y == win.… | |
242 + return; | |
243 + updatexy(); | |
244 + } else { | |
245 + if (e->xconfigure.width == win.w && | |
246 + e->xconfigure.height == win.h) | |
247 + return; | |
248 + } | |
249 cresize(e->xconfigure.width, e->xconfigure.height); | |
250 } | |
251 | |
252 @@ -2072,6 +2192,7 @@ run: | |
253 rows = MAX(rows, 1); | |
254 tnew(cols, rows); | |
255 xinit(cols, rows); | |
256 + bginit(); | |
257 xsetenv(); | |
258 selinit(); | |
259 run(); | |
260 -- | |
261 2.35.1 | |
262 |