1 //
2 // "$Id: Fl_Window_hotspot.cxx 5697 2007-02-13 14:38:43Z matt $"
3 //
4 // Common hotspot routines for the Fast Light Tool Kit (FLTK).
5 //
6 // Copyright 1998-2005 by Bill Spitzak and others.
7 //
8 // This library is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Library General Public
10 // License as published by the Free Software Foundation; either
11 // version 2 of the License, or (at your option) any later version.
12 //
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Library General Public License for more details.
17 //
18 // You should have received a copy of the GNU Library General Public
19 // License along with this library; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
21 // USA.
22 //
23 // Please report all bugs and problems on the following page:
24 //
25 // http://www.fltk.org/str.php
26 //
27
28 #include <FL/Fl.H>
29 #include <FL/Fl_Window.H>
30 #include <FL/x.H>
31 #include <stdio.h>
32
hotspot(int X,int Y,int offscreen)33 void Fl_Window::hotspot(int X, int Y, int offscreen) {
34 int mx,my;
35
36 // Update the screen position based on the mouse position.
37 Fl::get_mouse(mx,my);
38 X = mx-X; Y = my-Y;
39
40 // If offscreen is 0 (the default), make sure that the window
41 // stays on the screen, if possible.
42 if (!offscreen) {
43 int scr_x, scr_y, scr_w, scr_h;
44 Fl::screen_xywh(scr_x, scr_y, scr_w, scr_h);
45
46 int top = 0;
47 int left = 0;
48 int right = 0;
49 int bottom = 0;
50
51 if (border()) {
52 #ifdef WIN32
53 if (size_range_set && (maxw != minw || maxh != minh)) {
54 left = right = GetSystemMetrics(SM_CXSIZEFRAME);
55 top = bottom = GetSystemMetrics(SM_CYSIZEFRAME);
56 } else {
57 left = right = GetSystemMetrics(SM_CXFIXEDFRAME);
58 top = bottom = GetSystemMetrics(SM_CYFIXEDFRAME);
59 }
60 top += GetSystemMetrics(SM_CYCAPTION);
61 #elif defined(__APPLE__)
62 top = 24;
63 left = 2;
64 right = 2;
65 bottom = 2;
66 #else
67 // Ensure border is on screen; these values are generic enough
68 // to work with many window managers, and are based on KDE defaults.
69 top = 20;
70 left = 4;
71 right = 4;
72 bottom = 8;
73 #endif
74 }
75 // now insure contents are on-screen (more important than border):
76 if (X+w()+right > scr_w-scr_x) X = scr_w-scr_x-right-w();
77 if (X-left < scr_x) X = left;
78 if (Y+h()+bottom > scr_h-scr_y) Y = scr_h-scr_y-bottom-h();
79 if (Y-top < scr_y) Y = top;
80 // make sure that we will force this position
81 if (X==x()) x(X-1);
82 }
83
84 position(X,Y);
85 }
86
hotspot(const Fl_Widget * o,int offscreen)87 void Fl_Window::hotspot(const Fl_Widget *o, int offscreen) {
88 int X = o->w()/2;
89 int Y = o->h()/2;
90 while (o != this && o) {
91 X += o->x(); Y += o->y();
92 o = o->window();
93 }
94 hotspot(X,Y,offscreen);
95 }
96
97
98 //
99 // End of "$Id: Fl_Window_hotspot.cxx 5697 2007-02-13 14:38:43Z matt $".
100 //
101