+
+/* selection */
+// TODO: use X11 clipboard
+static int selmode = 0;
+static int selbx = -1, selby;
+static int selex, seley;
+int sb[2], se[2];
+static const char *clipboard = NULL;
+
+static inline int selected(int x, int y) {
+ if ((seley==y && selby==y)) {
+ int bx = MIN(selbx, selex);
+ int ex = MAX(selbx, selex);
+ return (x>=bx && x<=ex);
+ }
+ return (((y>sb[1] && y<se[1]) || (y==se[1] && x<=se[0])) || \
+ (y==sb[1] && x>=sb[0] && (x<=se[0] || sb[1]!=se[1])));
+}
+
+static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
+ if(b) *b = e->xbutton.state,
+ *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
+ *x = e->xbutton.x/xw.cw;
+ *y = e->xbutton.y/xw.ch;
+ sb[0] = selby<seley?selbx:selex;
+ sb[1] = MIN(selby, seley);
+ se[0] = selby<seley?selex:selbx;
+ se[1] = MAX(selby, seley);
+}
+
+static void bpress(XEvent *e) {
+ selmode = 1;
+ selex = selbx = e->xbutton.x/xw.cw;
+ seley = selby = e->xbutton.y/xw.ch;
+}
+
+static char *getseltext() {
+ char *str, *ptr;
+ int ls, x, y, sz;
+ if(selbx==-1)
+ return NULL;
+ sz = ((xw.w/xw.ch) * (se[1]-sb[1]+2));
+ ptr = str = malloc (sz);
+ for(y = 0; y < term.row; y++) {
+ for(x = 0; x < term.col; x++) {
+ if(term.line[y][x].c && (ls=selected(x, y))) {
+ *ptr = term.line[y][x].c;
+ ptr++;
+ }
+ }
+ if (ls) {
+ *ptr = '\n';
+ ptr++;
+ }
+ }
+ *ptr = 0;
+ return str;
+}
+
+static void clipboard_copy(const char *str) {
+ free((void *)clipboard);
+ clipboard = str;
+}
+
+static void clipboard_paste() {
+ if(clipboard)
+ ttywrite(clipboard, strlen(clipboard));
+}
+
+// TODO: doubleclick to select word
+static void brelease(XEvent *e) {
+ int b;
+ selmode = 0;
+ getbuttoninfo(e, &b, &selex, &seley);
+ if(b==4)
+ tscrollup(1);
+ else
+ if(b==5)
+ tscrolldown(1);
+ else
+ if(selbx==selex && selby==seley) {
+ selbx = -1;
+ if(b==2)
+ clipboard_paste();
+ } else {
+ if(b==1)
+ clipboard_copy(getseltext());
+ }
+ draw(1);
+}
+
+static void bmotion(XEvent *e) {
+ if (selmode) {
+ getbuttoninfo(e, NULL, &selex, &seley);
+ draw(1);
+ }
+}