Subversion Repositories DIN Is Noise

/*
* box_selector.cc
* DIN Is Noise is copyright (c) 2006-2025 Jagannathan Sampath
* DIN Is Noise is released under GNU Public License 2.0
* For more information, please visit https://dinisnoise.org/
*/
#include "box_selector.h"
#include "random.h"
#include "container.h"
#include "console.h"

box_selector::box_selector () {
  op = NONE;
  cross = 0;
  lis = 0;
  lmb_clicked = 0;
  rmb_clicked = 0;
}

int box_selector::handle_input () {
  if (is_lmb (this)) {
    if (lmb_clicked == 0) {
      if (op == NONE) {
        op = EXISTS;
        is_lmb.tie = this;
        if (lis) lis->region_begin ();
      } else if (op == EXISTS) {
        op = FINISH;
      }
      lmb_clicked = 1;
    }
  } else {
    lmb_clicked = rmb_clicked = 0;
    if (op == EXISTS) {
      if (lis) lis->region_update ();
    } else if (op == FINISH) {
      is_lmb.clear (this);
      if (lis) lis->region_end ();
      op = NONE;
    }
  }
  return 1;
}


void box_selector::draw (const box<float>& region) {
  if (op == EXISTS) {
    glEnable (GL_LINE_STIPPLE);
    glLineStipple (1, 0xf00f);
    glColor3f (1, 1, 1);
    boxp[0]=region.left;boxp[1]=region.bottom;
    boxp[2]=region.right;boxp[3]=region.bottom;
    boxp[4]=region.right;boxp[5]=region.top;
    boxp[6]=region.left;boxp[7]=region.top;
    glVertexPointer (2, GL_FLOAT, 0, boxp);
    glDrawArrays (GL_LINE_LOOP, 0, 4);
    if (cross) {
      glColor3f (0.25, 0.25, 0.25);
      int my = (region.bottom + region.top) / 2.0 + 0.5;
      /*boxp[0]=region.left;boxp[1]=my;
      boxp[2]=region.right;boxp[3]=my;
      glDrawArrays (GL_LINES, 0, 2);*/
      glBegin (GL_LINES);
        glVertex2i (region.left, my);
        glVertex2i (region.right, my);
      glEnd ();

      int mx = (region.left + region.right) / 2.0 + 0.5;
      /*boxp[0]=mx;boxp[1]=region.bottom;
      boxp[2]=mx;boxp[3]=region.top;
      glDrawArrays (GL_LINES, 0, 2);*/
      glBegin (GL_LINES);
        glVertex2i (mx, region.bottom);
        glVertex2i (mx, region.top);
      glEnd ();
    }
    glDisable (GL_LINE_STIPPLE);
  }
}

int box_selector::abort () {
  if (op != NONE) {
    op = NONE;
    is_lmb.clear (this);
    if (lis) lis->region_abort ();
    return 1;
  }
  return 0;
}