git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8217 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

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diff --git a/branch-3.0-2011/src/Fl_File_Input.cxx b/branch-3.0-2011/src/Fl_File_Input.cxx
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+++ b/branch-3.0-2011/src/Fl_File_Input.cxx
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+//
+// "$Id$"
+//
+// File_Input header file for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+// Original version Copyright 1998 by Curtis Edwards.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+#include <FL/Fl.H>
+#include <FL/Fl_File_Input.H>
+#include <FL/Fl_Window.H>
+#include <FL/fl_draw.H>
+#include <FL/filename.H>
+#include <stdio.h>
+#include "flstring.h"
+
+
+//
+// Height of directory buttons...
+//
+
+#define DIR_HEIGHT	10
+
+
+//
+// Redraw bit for directory bar...
+//
+
+#define FL_DAMAGE_BAR	0x10
+
+
+/**
+  Creates a new Fl_File_Input widget using the given position,
+  size, and label string. The default boxtype is FL_DOWN_BOX.
+  \param[in] X, Y, W, H position and size of the widget
+  \param[in] L widget label, default is no label
+*/
+Fl_File_Input::Fl_File_Input(int X, int Y, int W, int H, const char *L)
+  : Fl_Input(X, Y, W, H, L) {
+  buttons_[0] = 0;
+  errorcolor_ = FL_RED;
+  ok_entry_   = 1;
+  pressed_    = -1;
+
+  down_box(FL_UP_BOX);
+}
+
+/**
+  Draw directory buttons.
+*/
+void Fl_File_Input::draw_buttons() {
+  int	i,					// Looping var
+	X;					// Current X position
+
+
+  if (damage() & (FL_DAMAGE_BAR | FL_DAMAGE_ALL)) {
+    update_buttons();
+  }
+
+  for (X = 0, i = 0; buttons_[i]; i ++)
+  {
+    if ((X + buttons_[i]) > xscroll()) {
+      if (X < xscroll()) {
+        draw_box(pressed_ == i ? fl_down(down_box()) : down_box(),
+                 x(), y(), X + buttons_[i] - xscroll(), DIR_HEIGHT, FL_GRAY);
+      } else if ((X + buttons_[i] - xscroll()) > w()) {
+	draw_box(pressed_ == i ? fl_down(down_box()) : down_box(),
+        	 x() + X - xscroll(), y(), w() - X + xscroll(), DIR_HEIGHT,
+		 FL_GRAY);
+      } else {
+        draw_box(pressed_ == i ? fl_down(down_box()) : down_box(),
+	         x() + X - xscroll(), y(), buttons_[i], DIR_HEIGHT, FL_GRAY);
+      }
+    }
+
+    X += buttons_[i];
+  }
+
+  if (X < w()) {
+    draw_box(pressed_ == i ? fl_down(down_box()) : down_box(),
+             x() + X - xscroll(), y(), w() - X + xscroll(), DIR_HEIGHT, FL_GRAY);
+  }
+}
+
+/**
+  Update the sizes of the directory buttons.
+*/
+void Fl_File_Input::update_buttons() {
+  int		i;				// Looping var
+  const char	*start,				// Start of path component
+		*end;				// End of path component
+
+
+//  puts("update_buttons()");
+
+  // Set the current font & size...
+  fl_font(textfont(), textsize());
+
+  // Loop through the value string, setting widths...
+  for (i = 0, start = value();
+       start && i < (int)(sizeof(buttons_) / sizeof(buttons_[0]) - 1);
+       start = end, i ++) {
+//    printf("    start = \"%s\"\n", start);
+    if ((end = strchr(start, '/')) == NULL)
+#if defined(WIN32) || defined(__EMX__)
+      if ((end = strchr(start, '\\')) == NULL)
+#endif // WIN32 || __EMX__
+      break;
+
+    end ++;
+
+    buttons_[i] = (short)fl_width(start, end - start);
+    if (!i) buttons_[i] += Fl::box_dx(box()) + 6;
+  }
+
+//  printf("    found %d components/buttons...\n", i);
+
+  buttons_[i] = 0;
+}
+
+
+/**
+  Sets the value of the widget given a new string value and its length.
+  Returns non 0 on success.
+  \param[in] str new string value
+  \param[in] len lengh of value
+*/
+int						// O - TRUE on success
+Fl_File_Input::value(const char *str,		// I - New string value
+                     int        len) {		// I - Length of value
+  damage(FL_DAMAGE_BAR);
+  return Fl_Input::value(str,len);
+}
+
+
+/**
+  Sets the value of the widget given a new string value.
+  Returns non 0 on success.
+  \param[in] str new string value
+*/
+int						// O - TRUE on success
+Fl_File_Input::value(const char *str) {		// I - New string value
+  damage(FL_DAMAGE_BAR);
+  return Fl_Input::value(str);
+}
+
+
+/**
+  Draws the file input widget
+*/
+void Fl_File_Input::draw() {
+  Fl_Boxtype b = box();
+  if (damage() & (FL_DAMAGE_BAR | FL_DAMAGE_ALL)) draw_buttons();
+  // this flag keeps Fl_Input_::drawtext from drawing a bogus box!
+  char must_trick_fl_input_ = 
+    Fl::focus()!=this && !size() && !(damage()&FL_DAMAGE_ALL);
+  if ((damage() & FL_DAMAGE_ALL) || must_trick_fl_input_) 
+    draw_box(b,x(),y()+DIR_HEIGHT,w(),h()-DIR_HEIGHT,color());
+  if (!must_trick_fl_input_) 
+    Fl_Input_::drawtext(x()+Fl::box_dx(b)+3, y()+Fl::box_dy(b)+DIR_HEIGHT,
+		        w()-Fl::box_dw(b)-6, h()-Fl::box_dh(b)-DIR_HEIGHT);
+}
+
+
+
+/**
+  Handle events in the widget.
+  Return non zero if event is handled.
+  \param[in] event
+*/
+int						// O - TRUE if we handled event
+Fl_File_Input::handle(int event) 		// I - Event
+{
+//  printf("handle(event = %d)\n", event);
+  static char inButtonBar = 0;
+
+  switch (event) {
+    case FL_MOVE :
+    case FL_ENTER :
+      if (active_r()) {
+	if (Fl::event_y() < (y() + DIR_HEIGHT)) 
+          window()->cursor(FL_CURSOR_DEFAULT);
+	else 
+          window()->cursor(FL_CURSOR_INSERT);
+      }
+
+      return 1;
+
+    case FL_PUSH :
+      inButtonBar = (Fl::event_y() < (y() + DIR_HEIGHT));
+    case FL_RELEASE :
+    case FL_DRAG :
+      if (inButtonBar) 
+        return handle_button(event);
+      else
+        return Fl_Input::handle(event);
+
+    default :
+      { Fl_Widget_Tracker wp(this);
+	if (Fl_Input::handle(event)) {
+	  if (wp.exists())
+	    damage(FL_DAMAGE_BAR);
+	  return 1;
+	}
+      }
+      return 0;
+  }
+}
+
+
+
+/**
+  Handles button events in the widget.
+  Return non zero if event is handled.
+  \param[in] event
+*/
+int						// O - TRUE if we handled event
+Fl_File_Input::handle_button(int event)		// I - Event
+{
+  int		i,				// Looping var
+		X;				// Current X position
+  char		*start,				// Start of path component
+		*end;				// End of path component
+  char		newvalue[FL_PATH_MAX];		// New value
+
+
+  // Figure out which button is being pressed...
+  for (X = 0, i = 0; buttons_[i]; i ++)
+  {
+    X += buttons_[i];
+
+    if (X > xscroll() && Fl::event_x() < (x() + X - xscroll())) break;
+  }
+
+//  printf("handle_button(event = %d), button = %d\n", event, i);
+
+  // Redraw the directory bar...
+  if (event == FL_RELEASE) pressed_ = -1;
+  else pressed_ = (short)i;
+
+  window()->make_current();
+  draw_buttons();
+
+  // Return immediately if the user is clicking on the last button or
+  // has not released the mouse button...
+  if (!buttons_[i] || event != FL_RELEASE) return 1;
+
+  // Figure out where to truncate the path...
+  strlcpy(newvalue, value(), sizeof(newvalue));
+
+  for (start = newvalue, end = start; start && i >= 0; start = end, i --) {
+//    printf("    start = \"%s\"\n", start);
+    if ((end = strchr(start, '/')) == NULL)
+#if defined(WIN32) || defined(__EMX__)
+      if ((end = strchr(start, '\\')) == NULL)
+#endif // WIN32 || __EMX__
+      break;
+
+    end ++;
+  }
+
+  if (i < 0) {
+    // Found the end; truncate the value and update the buttons...
+    *start = '\0';
+    value(newvalue, start - newvalue);
+
+    // Then do the callbacks, if necessary...
+    set_changed();
+    if (when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE) ) do_callback();
+  }
+
+  return 1;
+}
+
+
+//
+// End of "$Id$".
+//