| DRC | 2ff39b8 | 2011-07-28 08:38:59 +0000 | [diff] [blame] | 1 | // |
| 2 | // "$Id: Fl_Value_Output.cxx 7903 2010-11-28 21:06:39Z matt $" |
| 3 | // |
| 4 | // Value output widget 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 | // Fltk widget for drag-adjusting a floating point value. |
| 29 | // This is much lighter than Fl_Value_Input because it has no text editor |
| 30 | // If step() is zero then it can be used to display a floating-point value |
| 31 | |
| 32 | #include <FL/Fl.H> |
| 33 | #include <FL/Fl_Value_Output.H> |
| 34 | #include <FL/fl_draw.H> |
| 35 | |
| 36 | void Fl_Value_Output::draw() { |
| 37 | Fl_Boxtype b = box() ? box() : FL_DOWN_BOX; |
| 38 | int X = x()+Fl::box_dx(b); |
| 39 | int Y = y()+Fl::box_dy(b); |
| 40 | int W = w()-Fl::box_dw(b); |
| 41 | int H = h()-Fl::box_dh(b); |
| 42 | if (damage()&~FL_DAMAGE_CHILD) |
| 43 | draw_box(b, color()); |
| 44 | else { |
| 45 | fl_color(color()); |
| 46 | fl_rectf(X, Y, W, H); |
| 47 | } |
| 48 | char buf[128]; |
| 49 | format(buf); |
| 50 | fl_color(active_r() ? textcolor() : fl_inactive(textcolor())); |
| 51 | fl_font(textfont(), textsize()); |
| 52 | fl_draw(buf,X,Y,W,H,FL_ALIGN_LEFT); |
| 53 | } |
| 54 | |
| 55 | int Fl_Value_Output::handle(int event) { |
| 56 | if (!step()) return 0; |
| 57 | double v; |
| 58 | int delta; |
| 59 | int mx = Fl::event_x(); |
| 60 | static int ix, drag; |
| 61 | switch (event) { |
| 62 | case FL_PUSH: |
| 63 | ix = mx; |
| 64 | drag = Fl::event_button(); |
| 65 | handle_push(); |
| 66 | return 1; |
| 67 | case FL_DRAG: |
| 68 | delta = Fl::event_x()-ix; |
| 69 | if (delta > 5) delta -= 5; |
| 70 | else if (delta < -5) delta += 5; |
| 71 | else delta = 0; |
| 72 | switch (drag) { |
| 73 | case 3: v = increment(previous_value(),delta*100); break; |
| 74 | case 2: v = increment(previous_value(),delta*10); break; |
| 75 | default:v = increment(previous_value(),delta); break; |
| 76 | } |
| 77 | v = round(v); |
| 78 | handle_drag(soft()?softclamp(v):clamp(v));; |
| 79 | return 1; |
| 80 | case FL_RELEASE: |
| 81 | handle_release(); |
| 82 | return 1; |
| 83 | case FL_ENTER : |
| 84 | case FL_LEAVE : |
| 85 | return 1; |
| 86 | default: |
| 87 | return 0; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | Creates a new Fl_Value_Output widget using the given |
| 93 | position, size, and label string. The default boxtype is FL_NO_BOX. |
| 94 | <P> Inherited destructor destroys the Valuator. |
| 95 | */ |
| 96 | Fl_Value_Output::Fl_Value_Output(int X, int Y, int W, int H,const char *l) |
| 97 | : Fl_Valuator(X,Y,W,H,l) { |
| 98 | box(FL_NO_BOX); |
| 99 | align(FL_ALIGN_LEFT); |
| 100 | textfont_ = FL_HELVETICA; |
| 101 | textsize_ = FL_NORMAL_SIZE; |
| 102 | textcolor_ = FL_FOREGROUND_COLOR; |
| 103 | soft_ = 0; |
| 104 | } |
| 105 | |
| 106 | // |
| 107 | // End of "$Id: Fl_Value_Output.cxx 7903 2010-11-28 21:06:39Z matt $". |
| 108 | // |