cinelerra/cursor.C

   1 #include "cursor.h"
   2
   3 Cursor_::Cursor_(BC_SubWindow *canvas)
   4 {
   5         this->canvas = canvas;
   6         selectionstart = selectionend = zoom_sample = viewstart = 0;
   7 }
   8
   9 Cursor_::~Cursor_()
  10 {
  11 }
  12
  13 int Cursor_::show(int flash, long selectionstart, long selectionend, long zoom_sample, long viewstart, int vertical)
  14 {
  15 return 0;
  16         this->selectionstart = selectionstart;
  17         this->selectionend = selectionend;
  18         this->viewstart = viewstart;
  19         this->zoom_sample = zoom_sample;
  20         this->vertical = vertical;
  21         draw(flash, selectionstart, selectionend, zoom_sample, viewstart, vertical);
  22 }
  23
  24 int Cursor_::hide(int flash)
  25 {
  26 return 0;
  27         draw(flash, selectionstart, selectionend, zoom_sample, viewstart, vertical);
  28 }
  29
  30 int Cursor_::draw(int flash, long selectionstart, long selectionend, long zoom_sample, long viewstart, int vertical)
  31 {
  32 return 0;
  33         if(canvas->get_h() * canvas->get_w() == 0) return 1;
  34         if(zoom_sample == 0) return 1;       // no canvas
  35
  36         long start = viewstart;
  37         long end = start + (long)(vertical ? canvas->get_h() : canvas->get_w()) * zoom_sample;
  38         int pixel1, pixel2;
  39
  40         if((selectionstart >= start && selectionstart <= end) ||
  41                  (selectionend >= start && selectionend <= end) ||
  42                  (start >= selectionstart && end <= selectionend))
  43         {
  44                 if(selectionstart < start)
  45                 {
  46                         pixel1 = 0;
  47                 }
  48                 else
  49                 {
  50                         pixel1 = (selectionstart - start) / zoom_sample;
  51                 }
  52
  53                 if(selectionend > end)
  54                 {
  55                         pixel2 = (vertical ? canvas->get_h() : canvas->get_w());
  56                 }
  57                 else
  58                 {
  59                         pixel2 = (selectionend - start) / zoom_sample;
  60                 }
  61                 pixel2++;
  62
  63                 canvas->set_inverse();
  64                 canvas->set_color(WHITE);
  65
  66                 if(vertical)
  67                 canvas->draw_box(0, pixel1, canvas->get_w(), pixel2 - pixel1);
  68                 else
  69                 canvas->draw_box(pixel1, 0, pixel2 - pixel1, canvas->get_h());
  70
  71
  72                 canvas->set_opaque();
  73         }
  74         if(flash) canvas->flash();
  75 }
  76
  77 int Cursor_::resize(int w, int h)
  78 {
  79 }