handles getting input from the user.

2 files changed, 76 insertions, 0 deletions

diff --git a/input.c b/input.c
new file mode 100644
index 0000000..ad8f093
--- /dev/null
+++ b/input.c
@@ -0,0 +1,75 @@
+/* for reading kdb input from the user. Currently only used to read in
+   the name of a window to jump to. */
+
+#include <X11/keysym.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "ratpoison.h"
+
+
+static int
+read_key ()
+{
+  XEvent ev;
+
+  XMaskEvent (dpy, KeyPressMask, &ev);
+  return XLookupKeysym ((XKeyEvent *)&ev, 0);
+}
+
+/* pass in a pointer a string and how much room we have, and fill it
+   in with text from the user. */
+void
+get_input (screen_info *s, char *prompt, char *str, int len)
+{
+  int cur_len;			/* Current length of the string. */
+  int ch;
+  int revert;
+  Window fwin;
+  int prompt_width = XTextWidth (s->font, prompt, strlen (prompt));
+  int width = 100 + prompt_width;
+
+  /* We don't want to draw overtop of the program bar. */
+  hide_bar (s);
+
+  XMapWindow (dpy, s->input_window);
+  XMoveResizeWindow (dpy, s->input_window, 
+		     bar_x (s, width), bar_y (s), width, (FONT_HEIGHT (s->font) + BAR_PADDING * 2));
+  XClearWindow (dpy, s->input_window);
+  XRaiseWindow (dpy, s->input_window);
+
+  /* draw the window prompt. */
+  XDrawString (dpy, s->input_window, s->bold_gc, 5, 
+	       BAR_PADDING + s->font->max_bounds.ascent, prompt, strlen (prompt));
+
+  XGetInputFocus (dpy, &fwin, &revert);
+  XSetInputFocus (dpy, s->input_window, RevertToPointerRoot, CurrentTime);
+
+  cur_len = 0;
+  while ((ch = read_key ()) != XK_Return)
+    {
+      printf ("key %d\n", ch);
+      if (ch == XK_BackSpace)
+	{
+	  if (cur_len > 0) cur_len--;
+	  XClearWindow (dpy, s->input_window);
+	  XDrawString (dpy, s->input_window, s->bold_gc, 5, 
+		       BAR_PADDING + s->font->max_bounds.ascent, prompt, strlen (prompt));
+	  XDrawString (dpy, s->input_window, s->bold_gc, 5 + prompt_width,
+		       BAR_PADDING + s->font->max_bounds.ascent, str, cur_len);
+	}
+      else if (ch >= ' ')
+	{
+	  str[cur_len] = ch;
+	  if (cur_len < len - 1) cur_len++;
+
+	  XDrawString (dpy, s->input_window, s->bold_gc, 5 + prompt_width,
+		       BAR_PADDING + s->font->max_bounds.ascent, str, cur_len);
+	}
+    }
+
+  str[cur_len] = 0;
+  XSetInputFocus (dpy, fwin, RevertToPointerRoot, CurrentTime);
+  XUnmapWindow (dpy, s->input_window);
+}  
+      
diff --git a/input.h b/input.h
new file mode 100644
index 0000000..9d49bbf
--- /dev/null
+++ b/input.h
@@ -0,0 +1 @@
+void get_input (screen_info *s, char *prompt, char *str, int len);