src/dragbar.cpp

   1 /*
   2    Epichord - a midi sequencer
   3    Copyright (C) 2008  Evan Rinehart
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public License
   7    as published by the Free Software Foundation; either version 2
   8    of the License, or (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to
  17
  18    The Free Software Foundation, Inc.
  19    51 Franklin Street, Fifth Floor
  20    Boston, MA  02110-1301, USA
  21 */
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 #include <fltk/Widget.h>
  27 #include <fltk/Group.h>
  28 #include <fltk/draw.h>
  29 #include <fltk/events.h>
  30
  31 #include "dragbar.h"
  32
  33
  34 DragBar::DragBar(int x, int y, int w, int h, const char* label) :
  35 fltk::Widget(x, y, w, h, label) {
  36
  37   cached_flag;
  38
  39 }
  40
  41 int DragBar::handle(int event){
  42   int X = fltk::event_x();
  43   switch(event){
  44     case fltk::PUSH:
  45       orig_x = X;
  46       orig_val = val;
  47       return 1;
  48     case fltk::DRAG:
  49       val = orig_val - (X - orig_x);
  50       if(val < 0){val=0;}
  51       if(val != last_val){
  52         redraw();
  53         do_callback();
  54         last_val = val;
  55       }
  56       return 1;
  57   }
  58   return 0;
  59 }
  60
  61 void DragBar::draw(){
  62   draw_box();
  63
  64   fltk::push_clip(2,2,w()-4,h()-4);
  65
  66   fltk::setcolor(fltk::GRAY60);
  67   fltk::fillrect(2,2,w()-4,h()-4);
  68
  69   if(!cached_flag){//draw first time
  70     for(int i=-val; i<w(); i+=6){
  71       if(i+10 > 0){
  72         fltk::setcolor(fltk::GRAY80);
  73         fltk::fillrect(i+5,4,3,1);
  74         fltk::fillrect(i+5,4,1,2);
  75
  76         fltk::setcolor(fltk::GRAY30);
  77         fltk::fillrect(i+5,6,3,1);
  78         fltk::fillrect(i+7,5,1,2);
  79
  80         fltk::setcolor(fltk::GRAY80);
  81         fltk::fillrect(i+5,4+5,3,1);
  82         fltk::fillrect(i+5,4+5,1,2);
  83
  84         fltk::setcolor(fltk::GRAY30);
  85         fltk::fillrect(i+5,6+5,3,1);
  86         fltk::fillrect(i+7,5+5,1,2);
  87       }
  88     }
  89
  90     int GX=x();
  91     int GY=y();
  92     fltk::Widget* p = parent();
  93     while(p){
  94       if(p->parent() != NULL){//the window
  95         GX+=p->x();
  96         GY+=p->y();
  97       }
  98       p = p->parent();
  99     }
 100     readimage(gfxbuf,fltk::RGB,fltk::Rectangle(GX+2,GY+2,102,h()-4));
 101     cached_flag=1;
 102   }
 103   else{
 104     for(int i=-val; i<w(); i+=102){
 105       if(i+200 > 0){
 106         drawimage(gfxbuf,fltk::RGB,fltk::Rectangle(2+i,2,102,h()-4));
 107       }
 108     }
 109   }
 110
 111   fltk::pop_clip();
 112 }
 113