Import of the contiki-2.x development code from the SICS internal CVS server

core/lib/ctk-filedialog.c

@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ *
+ * This file is part of the Contiki operating system.
+ * 
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: ctk-filedialog.c,v 1.1 2006/06/17 22:41:17 adamdunkels Exp $
+ */
+
+#include "contiki.h"
+#include "lib/ctk-filedialog.h"
+#include "ctk/ctk.h"
+#include "cfs/cfs.h"
+
+#include <string.h>
+
+#define MAX_NUMFILES 40
+#define FILES_WIDTH 17
+#define FILES_HEIGHT 14
+
+static struct ctk_window dialog;
+static char leftptr[FILES_HEIGHT];
+static struct ctk_label leftptrlabel =
+  {CTK_LABEL(0, 1, 1, FILES_HEIGHT, leftptr)};
+
+static char files[FILES_WIDTH * MAX_NUMFILES];
+static struct ctk_label fileslabel =
+  {CTK_LABEL(1, 1,
+	     FILES_WIDTH, FILES_HEIGHT, files)};
+
+static char rightptr[FILES_HEIGHT];
+static struct ctk_label rightptrlabel =
+  {CTK_LABEL(1 + FILES_WIDTH, 1, 1, FILES_HEIGHT, rightptr)};
+
+static char filename[FILES_WIDTH + 1];
+static struct ctk_textentry filenameentry =
+  {CTK_TEXTENTRY(1, 2 + FILES_HEIGHT, FILES_WIDTH, 1, filename,
+		 FILES_WIDTH)};
+
+static struct ctk_button button;
+
+#define STATE_CLOSED 0
+#define STATE_OPEN 1
+static char state = STATE_CLOSED;
+static unsigned char fileptr, dirfileptr;
+static struct cfs_dir dir;
+/*---------------------------------------------------------------------------*/
+static void
+clearptr(void)
+{
+  leftptr[fileptr] = ' ';
+  rightptr[fileptr] = ' '; 
+}
+/*---------------------------------------------------------------------------*/
+static void
+showptr(void)
+{
+  leftptr[fileptr] = '>';
+  rightptr[fileptr] = '<';
+
+  strncpy(filename,
+	  &files[fileptr * FILES_WIDTH],
+	  FILES_WIDTH);
+  
+  CTK_WIDGET_REDRAW(&filenameentry);
+  CTK_WIDGET_REDRAW(&leftptrlabel);
+  CTK_WIDGET_REDRAW(&rightptrlabel);
+}
+/*---------------------------------------------------------------------------*/
+void
+ctk_filedialog_init(register struct ctk_filedialog_state *s)
+{
+  state = STATE_CLOSED;
+}
+/*---------------------------------------------------------------------------*/
+void
+ctk_filedialog_open(register struct ctk_filedialog_state *s,
+		    const char *buttontext, process_event_t event)
+{
+  ctk_dialog_new(&dialog, 20, 5 + FILES_HEIGHT);
+  CTK_WIDGET_ADD(&dialog, &leftptrlabel);
+  CTK_WIDGET_ADD(&dialog, &fileslabel);
+  CTK_WIDGET_ADD(&dialog, &rightptrlabel);
+  CTK_WIDGET_ADD(&dialog, &filenameentry);
+  CTK_BUTTON_NEW(&button, 1, 4 + FILES_HEIGHT, strlen(buttontext), (char *)buttontext);
+  CTK_WIDGET_ADD(&dialog, &button);
+  ctk_dialog_open(&dialog);
+  state = STATE_OPEN;
+  memset(filename, 0, sizeof(filename));
+  memset(leftptr, ' ', sizeof(leftptr));
+  memset(rightptr, ' ', sizeof(rightptr));
+  memset(files, 0, sizeof(files));
+  
+  fileptr = 0;
+  dirfileptr = 0;
+  showptr();
+  cfs_opendir(&dir, ".");
+  process_post(PROCESS_CURRENT(), PROCESS_EVENT_CONTINUE, s);
+}
+/*---------------------------------------------------------------------------*/
+char
+ctk_filedialog_eventhandler(struct ctk_filedialog_state *s,
+			    process_event_t ev, process_data_t data)
+{
+  static struct cfs_dirent dirent;
+  
+  if(state == STATE_OPEN) {
+    if(ev == ctk_signal_widget_activate &&
+       data == (process_data_t)&button) {
+      ctk_dialog_close();
+      state = STATE_CLOSED;
+      process_post(PROCESS_CURRENT(), s->ev, &filename);
+      return 1;
+    } else if(ev == PROCESS_EVENT_CONTINUE &&
+	      (process_data_t)s == data) {
+      if(cfs_readdir(&dir, &dirent) == 0 &&
+	 dirfileptr < MAX_NUMFILES) {
+	strncpy(&files[dirfileptr * FILES_WIDTH],
+		dirent.name, FILES_WIDTH);
+	CTK_WIDGET_REDRAW(&fileslabel);
+	++dirfileptr;
+	process_post(PROCESS_CURRENT(), PROCESS_EVENT_CONTINUE, s);
+      } else {
+	fileptr = 0;	
+	cfs_closedir(&dir);
+      }
+      return 1; 
+    } else if(ev == ctk_signal_keypress) {
+      if((ctk_arch_key_t)data == CH_CURS_UP) {
+	clearptr();
+	if(fileptr > 0) {
+	  --fileptr;
+	}
+	showptr();
+	return 1;
+      } else if((ctk_arch_key_t)data == CH_CURS_DOWN) {
+	clearptr();
+	if(fileptr < FILES_HEIGHT - 1) {
+	  ++fileptr;
+	}
+	showptr();
+	return 1;
+      }
+    }
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/