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authorRichard Grenville <[email protected]>2013-05-21 09:18:41 +0800
committerRichard Grenville <[email protected]>2013-05-21 09:26:18 +0800
commitd800a62b878fa152c94253b2c0f60ef4f5b9b9d1 (patch)
treeed2ae824aee66bd3ec4adcd78cf6a93c2b94813b /compton.c
parent1bdd035974a0166434cdb2dd5d34405d6ddf184d (diff)
downloadtdebase-d800a62b878fa152c94253b2c0f60ef4f5b9b9d1.tar.gz
tdebase-d800a62b878fa152c94253b2c0f60ef4f5b9b9d1.zip
Feature #113: Set opacity based on conditions
- Add --opacity-rule, which sets opacity based on conditions, as requested by zabbal. (#113) - Add a data field for each condition. - Correct the FAQ link in README.md. Silly me. - Code clean-up.
Diffstat (limited to 'compton.c')
-rw-r--r--compton.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/compton.c b/compton.c
index f058bf927..c55d045d8 100644
--- a/compton.c
+++ b/compton.c
@@ -2427,6 +2427,28 @@ win_determine_blur_background(session_t *ps, win *w) {
}
/**
+ * Update window opacity according to opacity rules.
+ */
+static void
+win_update_opacity_rule(session_t *ps, win *w) {
+ // If long is 32-bit, unfortunately there's no way could we express "unset",
+ // so we just entirely don't distinguish "unset" and OPAQUE
+ long opacity = OPAQUE;
+ void *val = NULL;
+ if (c2_matchd(ps, w, ps->o.opacity_rules, &w->cache_oparule, &val))
+ opacity = ((double) (long) val) / 100.0 * OPAQUE;
+
+ if (opacity == w->opacity_set)
+ return;
+
+ if (OPAQUE != opacity)
+ wid_set_opacity_prop(ps, w->id, opacity);
+ else if (OPAQUE != w->opacity_set)
+ wid_rm_opacity_prop(ps, w->id);
+ w->opacity_set = opacity;
+}
+
+/**
* Function to be called on window type changes.
*/
static void
@@ -2436,6 +2458,8 @@ win_on_wtype_change(session_t *ps, win *w) {
win_update_focused(ps, w);
if (ps->o.invert_color_list)
win_determine_invert_color(ps, w);
+ if (ps->o.opacity_rules)
+ win_update_opacity_rule(ps, w);
}
/**
@@ -2453,6 +2477,8 @@ win_on_factor_change(session_t *ps, win *w) {
win_update_focused(ps, w);
if (ps->o.blur_background_blacklist)
win_determine_blur_background(ps, w);
+ if (ps->o.opacity_rules)
+ win_update_opacity_rule(ps, w);
}
/**
@@ -2670,11 +2696,13 @@ add_win(session_t *ps, Window id, Window prev) {
.cache_fcblst = NULL,
.cache_ivclst = NULL,
.cache_bbblst = NULL,
+ .cache_oparule = NULL,
.opacity = 0,
.opacity_tgt = 0,
.opacity_prop = OPAQUE,
.opacity_prop_client = OPAQUE,
+ .opacity_set = OPAQUE,
.fade = false,
.fade_force = UNSET,
@@ -4351,6 +4379,12 @@ usage(int ret) {
"--invert-color-include condition\n"
" Specify a list of conditions of windows that should be painted with\n"
" inverted color. Resource-hogging, and is not well tested.\n"
+ "--opacity-rule opacity:condition\n"
+ " Specify a list of opacity rules, in the format \"PERCENT:PATTERN\",\n"
+ " like \'50:name *= \"Firefox\"'. compton-trans is recommended over\n"
+ " this. Note we do not distinguish 100% and unset, and we don't make\n"
+ " any guarantee about possible conflicts with other programs that set\n"
+ " _NET_WM_WINDOW_OPACITY on frame or client windows.\n"
"--backend backend\n"
" Choose backend. Possible choices are xrender and glx" WARNING ".\n"
"--glx-no-stencil\n"
@@ -4638,6 +4672,9 @@ parse_conv_kern(session_t *ps, const char *src, const char **endptr) {
return parse_matrix(ps, src, endptr);
}
+/**
+ * Parse a list of convolution kernels.
+ */
static bool
parse_conv_kern_lst(session_t *ps, const char *src, XFixed **dest, int max) {
static const struct {
@@ -4682,6 +4719,37 @@ parse_conv_kern_lst(session_t *ps, const char *src, XFixed **dest, int max) {
return true;
}
+/**
+ * Parse a list of opacity rules.
+ */
+static inline bool
+parse_rule_opacity(session_t *ps, const char *src) {
+ // Find opacity value
+ char *endptr = NULL;
+ long val = strtol(src, &endptr, 0);
+ if (!endptr || endptr == src) {
+ printf_errf("(\"%s\"): No opacity specified?", src);
+ return false;
+ }
+ if (val > 100 || val < 0) {
+ printf_errf("(\"%s\"): Opacity %ld invalid.", src, val);
+ return false;
+ }
+
+ // Skip over spaces
+ while (*endptr && isspace(*endptr))
+ ++endptr;
+ if (':' != *endptr) {
+ printf_errf("(\"%s\"): Opacity terminator not found.", src);
+ return false;
+ }
+ ++endptr;
+
+ // Parse pattern
+ // I hope 1-100 is acceptable for (void *)
+ return c2_parsed(ps, &ps->o.opacity_rules, endptr, (void *) val);
+}
+
#ifdef CONFIG_LIBCONFIG
/**
* Get a file stream of the configuration file to read.
@@ -5049,6 +5117,7 @@ get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
{ "blur-kern", required_argument, NULL, 301 },
{ "resize-damage", required_argument, NULL, 302 },
{ "glx-use-gpushader4", no_argument, NULL, 303 },
+ { "opacity-rule", required_argument, NULL, 304 },
// Must terminate with a NULL entry
{ NULL, 0, NULL, 0 },
};
@@ -5282,6 +5351,11 @@ get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
ps->o.resize_damage = atoi(optarg);
break;
P_CASEBOOL(303, glx_use_gpushader4);
+ case 304:
+ // --opacity-rule
+ if (!parse_rule_opacity(ps, optarg))
+ exit(1);
+ break;
default:
usage(1);
break;
@@ -6216,6 +6290,7 @@ session_init(session_t *ps_old, int argc, char **argv) {
.inactive_dim = 0.0,
.inactive_dim_fixed = false,
.invert_color_list = NULL,
+ .opacity_rules = NULL,
.wintype_focus = { false },
.use_ewmh_active_win = false,
@@ -6635,6 +6710,7 @@ session_destroy(session_t *ps) {
free_wincondlst(&ps->o.focus_blacklist);
free_wincondlst(&ps->o.invert_color_list);
free_wincondlst(&ps->o.blur_background_blacklist);
+ free_wincondlst(&ps->o.opacity_rules);
#endif
// Free tracked atom list