[hackers] [st] initial implementation of selection and clipboard || pancake

changeset: 115:f9007855d409
tag: tip
user: pancake <pancake_AT_nopcode.org>
date: Mon Aug 30 23:41:37 2010 +0200
files: st.c
description:
initial implementation of selection and clipboard

diff -r 2b5b15a61842 -r f9007855d409 st.c
--- a/st.c Mon Aug 30 17:07:54 2010 +0200
+++ b/st.c Mon Aug 30 23:41:37 2010 +0200
@@ -177,6 +177,9 @@
 static void kpress(XEvent *);
 static void resize(XEvent *);
 static void focus(XEvent *);
+static void brelease(XEvent *e);
+static void bpress(XEvent *e);
+static void bmotion(XEvent *e);
 
 
 static void (*handler[LASTEvent])(XEvent *) = {
@@ -185,6 +188,9 @@
         [ConfigureNotify] = resize,
         [FocusIn] = focus,
         [FocusOut] = focus,
+ [MotionNotify] = bmotion,
+ [ButtonPress] = bpress,
+ [ButtonRelease] = brelease,
 };
 
 /* Globals */
@@ -195,6 +201,103 @@
 static int cmdfd;
 static pid_t pid;
 
+/* 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 if(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);
+ }
+}
+
 #ifdef DEBUG
 void
 tdump(void) {
@@ -1210,7 +1313,7 @@
         int i, x, y, ox;
         Glyph base, new;
         char buf[DRAW_BUF_SIZ];
-
+
         XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
         XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
         for(y = 0; y < term.row; y++) {
@@ -1218,8 +1321,10 @@
                 i = ox = 0;
                 for(x = 0; x < term.col; x++) {
                         new = term.line[y][x];
+ if(selbx!=-1 && new.c && selected(x, y))
+ new.mode = ATTR_REVERSE;
                         if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
- i >= DRAW_BUF_SIZ)) {
+ i >= DRAW_BUF_SIZ)) {
                                 xdraws(buf, base, ox, y, i);
                                 i = 0;
                         }
@@ -1335,7 +1440,7 @@
         XEvent ev;
         fd_set rfd;
         int xfd = XConnectionNumber(xw.dis);
- long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask;
+ long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
 
         XSelectInput(xw.dis, xw.win, mask);
         XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
Received on Mon Aug 30 2010 - 23:44:50 CEST