ref: 6e68d605ee9903626b64221607a4577c2c92c6bc
dir: /DoConfig/fltk/src/Fl_File_Input.cxx/
//
// "$Id$"
//
// 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. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// 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, (int) (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, (int) (start - newvalue) );
// Then do the callbacks, if necessary...
set_changed();
if (when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE) ) do_callback();
}
return 1;
}
//
// End of "$Id$".
//