cinelerra-5.1/cinelerra/cursor.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "cursor.h"
  23
  24 Cursor_::Cursor_(BC_SubWindow *canvas)
  25 {
  26         this->canvas = canvas;
  27         selectionstart = selectionend = zoom_sample = viewstart = 0;
  28 }
  29
  30 Cursor_::~Cursor_()
  31 {
  32 }
  33
  34 int Cursor_::show(int flash, long selectionstart, long selectionend, long zoom_sample, long viewstart, int vertical)
  35 {
  36 return 0;
  37         this->selectionstart = selectionstart;
  38         this->selectionend = selectionend;
  39         this->viewstart = viewstart;
  40         this->zoom_sample = zoom_sample;
  41         this->vertical = vertical;
  42         draw(flash, selectionstart, selectionend, zoom_sample, viewstart, vertical);
  43 }
  44
  45 int Cursor_::hide(int flash)
  46 {
  47 return 0;
  48         draw(flash, selectionstart, selectionend, zoom_sample, viewstart, vertical);
  49 }
  50
  51 int Cursor_::draw(int flash, long selectionstart, long selectionend, long zoom_sample, long viewstart, int vertical)
  52 {
  53 return 0;
  54         if(canvas->get_h() * canvas->get_w() == 0) return 1;
  55         if(zoom_sample == 0) return 1;       // no canvas
  56
  57         long start = viewstart;
  58         long end = start + (long)(vertical ? canvas->get_h() : canvas->get_w()) * zoom_sample;
  59         int pixel1, pixel2;
  60
  61         if((selectionstart >= start && selectionstart <= end) ||
  62                  (selectionend >= start && selectionend <= end) ||
  63                  (start >= selectionstart && end <= selectionend))
  64         {
  65                 if(selectionstart < start)
  66                 {
  67                         pixel1 = 0;
  68                 }
  69                 else
  70                 {
  71                         pixel1 = (selectionstart - start) / zoom_sample;
  72                 }
  73
  74                 if(selectionend > end)
  75                 {
  76                         pixel2 = (vertical ? canvas->get_h() : canvas->get_w());
  77                 }
  78                 else
  79                 {
  80                         pixel2 = (selectionend - start) / zoom_sample;
  81                 }
  82                 pixel2++;
  83
  84                 canvas->set_inverse();
  85                 canvas->set_color(WHITE);
  86
  87                 if(vertical)
  88                 canvas->draw_box(0, pixel1, canvas->get_w(), pixel2 - pixel1);
  89                 else
  90                 canvas->draw_box(pixel1, 0, pixel2 - pixel1, canvas->get_h());
  91
  92
  93                 canvas->set_opaque();
  94         }
  95         if(flash) canvas->flash();
  96 }
  97
  98 int Cursor_::resize(int w, int h)
  99 {
 100         return 0;
 101 }