src/fl_rounded_box.cxx

   1 //
   2 // "$Id: fl_rounded_box.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // Rounded box drawing routines for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  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_draw.H>
  30
  31 #define RN      5
  32 #define RS      15
  33 #define BW      3
  34
  35 static double offset[RN] = { 0.0, 0.07612, 0.29289, 0.61732, 1.0};
  36
  37 static void rbox(int fill, int x, int y, int w, int h, int asym = 0 ) {
  38   int i;
  39   int rsx ,rsy, rs;
  40   rsx = w*2/5; rsy = h*2/5;
  41   if (rsx > rsy) rs = rsy; else  rs = rsx;
  42   if (rs > RS) rs = RS;
  43   rsx = rs; rsy = rs;
  44
  45   if (fill) fl_begin_polygon(); else fl_begin_loop();
  46
  47   for (i=0; i<RN; i++)
  48       fl_vertex(x + offset[RN-i-1]*rsx, y + offset[i] * rsy);
  49
  50   if ( ! asym )
  51       for (i=0; i<RN; i++)
  52           fl_vertex(x + offset[i]*rsx, y + h-1 - offset[RN-i-1] * rsy);
  53   else
  54       fl_vertex( x, y + h - 1 );
  55
  56   for (i=0; i<RN; i++)
  57       fl_vertex(x + w-1 - offset[RN-i-1]*rsx, y + h-1 - offset[i] * rsy);
  58
  59   if ( ! asym )
  60       for (i=0; i<RN; i++)
  61           fl_vertex(x + w-1 - offset[i]*rsx, y + offset[RN-i-1] * rsy);
  62   else
  63       fl_vertex( x + w - 1, y );
  64
  65   if (fill) fl_end_polygon(); else fl_end_loop();
  66 }
  67
  68 static void fl_rflat_box(int x, int y, int w, int h, Fl_Color c) {
  69   fl_color(c); rbox(1, x, y, w, h); rbox(0, x, y, w, h);
  70 }
  71
  72 static void fl_rounded_frame(int x, int y, int w, int h, Fl_Color c) {
  73   fl_color(c); rbox(0, x, y, w, h);
  74 }
  75
  76 static void fl_rounded_box(int x, int y, int w, int h, Fl_Color c) {
  77   fl_color(c); rbox(1, x, y, w, h);
  78   fl_color(FL_BLACK); rbox(0, x, y, w, h);
  79 }
  80
  81 static void fl_asym_box(int x, int y, int w, int h, Fl_Color c) {
  82     fl_color(c); rbox(1, x, y, w, h, 1);
  83     fl_color(FL_BLACK); rbox(0, x, y, w, h, 1 );
  84 }
  85
  86 static void fl_asym_flat_box(int x, int y, int w, int h, Fl_Color c) {
  87     fl_color(c); rbox(1, x, y, w, h, 1);
  88 }
  89
  90 static void fl_rshadow_box(int x, int y, int w, int h, Fl_Color c) {
  91   // draw shadow:
  92   fl_color(FL_DARK3);
  93   rbox(1, x+BW, y+BW, w, h);
  94   rbox(0, x+BW, y+BW, w, h);
  95   // draw the box:
  96   fl_rounded_box(x, y, w, h, c);
  97 }
  98
  99 extern void fl_internal_boxtype(Fl_Boxtype, Fl_Box_Draw_F*);
 100
 101 Fl_Boxtype fl_define_FL_ROUNDED_BOX() {
 102   fl_internal_boxtype(_FL_ROUNDED_FRAME, fl_rounded_frame);
 103   fl_internal_boxtype(_FL_ROUNDED_BOX, fl_rounded_box);
 104   return _FL_ROUNDED_BOX;
 105 }
 106
 107 Fl_Boxtype fl_define_FL_RFLAT_BOX() {
 108   fl_internal_boxtype(_FL_RFLAT_BOX, fl_rflat_box);
 109   return _FL_RFLAT_BOX;
 110 }
 111
 112 Fl_Boxtype fl_define_FL_RSHADOW_BOX() {
 113   fl_internal_boxtype(_FL_RSHADOW_BOX, fl_rshadow_box);
 114   return _FL_RSHADOW_BOX;
 115 }
 116
 117 Fl_Boxtype fl_define_FL_ASYM_BOX() {
 118   fl_internal_boxtype(_FL_ASYM_BOX, fl_asym_box);
 119   fl_internal_boxtype(_FL_ASYM_FLAT_BOX, fl_asym_flat_box);
 120   return _FL_ASYM_BOX;
 121 }
 122
 123 //
 124 // End of "$Id: fl_rounded_box.cxx 7903 2010-11-28 21:06:39Z matt $".
 125 //