add support for marking items (ie. multi selection)

docs/spmenu.conf

@@ -290,6 +290,13 @@ spmenu = {
              function = "selectitem";
              argument = "0";
            },
+           // Ctrl+Enter: Mark input
+           { mode = -1;
+             modifier = "Ctrl";
+             key = "Enter";
+             function = "markitem";
+             argument = "0";
+           },
            // Tab: Tab complete
            { mode = -1;
              modifier = "None";

keybinds.h

@@ -12,6 +12,7 @@ static Key keys[] = {
      */
     { -1,      0,              XK_Return,    selectitem,      {.i = +1 } },
     { -1,      Shift,          XK_Return,    selectitem,      {0} },
+    { -1,      Ctrl,           XK_Return,    markitem,        {0} },
     { -1,      0,              XK_Tab,       complete,        {0} },
     { -1,      Ctrl,           XK_v,         paste,           {.i = 2  } },
     { -1,      Ctrl|Shift,     XK_v,         paste,           {.i = 1  } },

libs/arg.c

@@ -240,6 +240,27 @@ void backspace(Arg *arg) {
     drawmenu();
 }
 
+void markitem(Arg *arg) {
+    if (sel && is_selected(sel->index)) {
+        for (int i = 0; i < sel_size; i++) {
+            if (sel_index[i] == sel->index) {
+                sel_index[i] = -1;
+            }
+        }
+    } else {
+        for (int i = 0; i < sel_size; i++) {
+            if (sel_index[i] == -1) {
+                sel_index[i] = sel->index;
+                return;
+            }
+        }
+
+        sel_size++;
+        sel_index = realloc(sel_index, (sel_size + 1) * sizeof(int));
+        sel_index[sel_size - 1] = sel->index;
+    }
+}
+
 void selectitem(Arg *arg) {
     char *selection;
 
@@ -257,6 +278,13 @@ void selectitem(Arg *arg) {
         selection = text;
     }
 
+    for (int i = 0; i < sel_size; i++) {
+        if (sel_index[i] != -1 && (!sel || sel->index != sel_index[i])) {
+            puts(items[sel_index[i]].text);
+            savehistory(items[sel_index[i]].text);
+        }
+    }
+
     if (!selection)
         return;
 

libs/arg.h

@@ -26,6 +26,7 @@ static void deleteword(Arg *arg);
 static void movecursor(Arg *arg);
 static void navhistory(Arg *arg);
 static void backspace(Arg *arg);
+static void markitem(Arg *arg);
 static void selectitem(Arg *arg);
 static void quit(Arg *arg);
 static void complete(Arg *arg);

libs/conf/config.h

@@ -352,6 +352,7 @@ static FuncList fl[] = {
     { "navhistory",     navhistory },
     { "backspace",      backspace },
     { "selectitem",     selectitem },
+    { "markitem",       markitem },
     { "quit",           quit },
     { "complete",       complete },
     { "setimgsize",     setimgsize },

libs/draw.c

@@ -71,6 +71,10 @@ int drawitemtext(struct item *item, int x, int y, int w) {
         }
     }
 
+    if (is_selected(item->index)) {
+        memcpy(scm, scheme[SchemeItemSel], sizeof(scm));
+    }
+
     // apply extra padding
     if ((selitem && !priitem) && lines) {
         leftpadding += selitempadding;

spmenu.c

@@ -157,6 +157,8 @@ static size_t cursor;
 static struct item *items = NULL, *backup_items, *list_items;
 static struct item *matches, *matchend;
 static struct item *prev, *curr, *next, *sel;
+static int *sel_index = NULL;
+static unsigned int sel_size = 0;
 static int screen;
 static int itemn = 0;
 
@@ -224,6 +226,7 @@ static Clr **scheme;
 static Clr textclrs[256];
 
 // declare functions
+static int is_selected(size_t index);
 static void calcoffsets(void);
 static void recalculatenumbers(void);
 static void usage(void);
@@ -288,6 +291,16 @@ static char *(*fstrstr)(const char *, const char *) = cistrstr;
 #include "libs/event.h"
 #include "libs/event.c"
 
+int is_selected(size_t index) {
+    for (int i = 0; i < sel_size; i++) {
+        if (sel_index[i] == index) {
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
 void appenditem(struct item *item, struct item **list, struct item **last) {
     if (*last)
         (*last)->right = item;
@@ -382,6 +395,7 @@ void cleanup(void) {
     drw_free(drw);
     XSync(dpy, False);
     XCloseDisplay(dpy);
+    free(sel_index);
 }
 
 char * cistrstr(const char *h, const char *n) {