zynaddsubfx

ZynAddSubFX open source synthesizer
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TipWin.cpp (1727B)

      1 /*
      2   ZynAddSubFX - a software synthesizer
      3 
      4   TipWin.cpp - Tooltips
      5   Copyright (C) 2016 Mark McCurry
      6 
      7   This program is free software; you can redistribute it and/or
      8   modify it under the terms of the GNU General Public License
      9   as published by the Free Software Foundation; either version 2
     10   of the License, or (at your option) any later version.
     11 */
     12 #include <cstdio>
     13 #include <cmath>
     14 #include <FL/Fl_Tooltip.H>
     15 #include <FL/fl_draw.H>
     16 #include "TipWin.h"
     17 
     18 TipWin::TipWin(void):Fl_Menu_Window(1, 1)
     19 {
     20     strcpy(format, "%0.2f");
     21     set_override();
     22     end();
     23 }
     24 
     25 void TipWin::set_rounding(unsigned int digits)
     26 {
     27     format[3] = "0123456789"[digits < 9 ? digits : 9];
     28 }
     29 
     30 void TipWin::draw()
     31 {
     32     //setup window
     33     draw_box(FL_BORDER_BOX, 0, 0, w(), h(), Fl_Color(175));
     34     fl_color(Fl_Tooltip::textcolor());
     35     fl_font(labelfont(), labelsize());
     36 
     37     //Draw the current string
     38     fl_draw(getStr(), 3, 3, w() - 6, h() - 6,
     39             Fl_Align(FL_ALIGN_LEFT | FL_ALIGN_WRAP));
     40 }
     41 
     42 void TipWin::showValue(float f)
     43 {
     44     //convert the value to a string
     45     char tmp[10];
     46     snprintf(tmp, 9, format, f);
     47     tip = tmp;
     48 
     49     textmode = false;
     50     redraw();
     51     show();
     52 }
     53 
     54 void TipWin::setText(const char *c)
     55 {
     56     text     = c;
     57     textmode = true;
     58     redraw();
     59 }
     60 
     61 void TipWin::showText()
     62 {
     63     if(!text.empty()) {
     64         textmode = true;
     65         redraw();
     66         show();
     67     }
     68 }
     69 
     70 void TipWin::redraw()
     71 {
     72     // Recalc size of window
     73     fl_font(labelfont(), labelsize());
     74     int W = 0, H = 0;
     75     fl_measure(getStr(), W, H, 0);
     76     //provide a bit of extra space
     77     W += 8;
     78     H += 4;
     79     size(W, H);
     80     Fl_Menu_Window::redraw();
     81 }
     82 
     83 const char *TipWin::getStr() const
     84 {
     85     return (textmode ? text : tip).c_str();
     86 }