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//
// "$Id$"
//
// Common hotspot routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// 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_Window.H>
#include "Fl_Window_Driver.H"
void Fl_Window::hotspot(int X, int Y, int offscreen) {
int mx,my;
// Update the screen position based on the mouse position.
Fl::get_mouse(mx,my);
X = mx-X; Y = my-Y;
// If offscreen is 0 (the default), make sure that the window
// stays on the screen, if possible.
if (!offscreen) {
int scr_x, scr_y, scr_w, scr_h;
Fl::screen_work_area(scr_x, scr_y, scr_w, scr_h);
int top = 0;
int left = 0;
int right = 0;
int bottom = 0;
if (border()) {
pWindowDriver->decoration_sizes(&top, &left, &right, &bottom);
}
// now ensure contents are on-screen (more important than border):
if (X+w()+right > scr_w+scr_x) X = scr_w+scr_x-right-w();
if (X-left < scr_x) X = left + scr_x;
if (Y+h()+bottom > scr_h+scr_y) Y = scr_h+scr_y-bottom-h();
if (Y-top < scr_y) Y = top + scr_y;
// make sure that we will force this position
if (X==x()) x(X-1);
}
position(X,Y);
}
void Fl_Window::hotspot(const Fl_Widget *o, int offscreen) {
int X = o->w()/2;
int Y = o->h()/2;
while (o != this && o) {
X += o->x(); Y += o->y();
o = o->window();
}
hotspot(X,Y,offscreen);
}
//
// End of "$Id$".
//
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