2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview 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 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
21 package jalview.viewmodel;
23 import jalview.datamodel.AlignmentI;
26 * Embryonic class which: Supplies and updates viewport properties relating to
27 * position such as: start and end residues and sequences; ideally will serve
28 * hidden columns/rows too. Intention also to support calculations for
29 * positioning, scrolling etc. such as finding the middle of the viewport,
30 * checking for scrolls off screen
32 public class ViewportRanges extends ViewportProperties
34 // start residue of viewport
37 // end residue of viewport
40 // start sequence of viewport
43 // end sequence of viewport
47 private AlignmentI al;
53 * the viewport's alignment
55 public ViewportRanges(AlignmentI alignment)
57 // initial values of viewport settings
59 this.endRes = alignment.getWidth() - 1;
61 this.endSeq = alignment.getHeight() - 1;
66 * Get alignment width in cols, including hidden cols
68 public int getAbsoluteAlignmentWidth()
74 * Get alignment height in rows, including hidden rows
76 public int getAbsoluteAlignmentHeight()
78 return al.getHeight() + al.getHiddenSequences().getSize();
82 * Set first residue visible in the viewport, and retain the current width.
87 public void setStartRes(int res)
89 int oldres = this.startRes;
90 setStartResInternal(res);
91 changeSupport.firePropertyChange("startres", oldres, res);
94 private void setStartResInternal(int res)
96 if (res > al.getWidth() - 1)
98 res = al.getWidth() - 1;
107 public void setStartEndRes(int startres, int endres)
109 int oldres = this.startRes;
110 setStartResInternal(startres);
111 setEndResInternal(endres);
112 changeSupport.firePropertyChange("startres", oldres, startres);
116 * Set last residue visible in the viewport
121 public void setEndRes(int res)
123 int oldres = this.endRes;
124 setEndResInternal(res);
126 changeSupport.firePropertyChange("endres", oldres, res);
129 private void setEndResInternal(int res)
131 if (res >= al.getWidth())
133 res = al.getWidth() - 1;
143 * Set the first sequence visible in the viewport
148 public void setStartSeq(int seq)
150 int oldseq = this.startSeq;
151 setStartSeqInternal(seq);
152 changeSupport.firePropertyChange("startseq", oldseq, seq);
155 private void setStartSeqInternal(int seq)
157 if (seq > al.getHeight() - 1)
159 seq = al.getHeight() - 1;
168 public void setStartEndSeq(int startseq, int endseq)
170 int oldseq = this.startSeq;
171 setStartSeqInternal(startseq);
172 setEndSeqInternal(endseq);
173 changeSupport.firePropertyChange("startseq", oldseq, startseq);
177 * Set the last sequence visible in the viewport
182 public void setEndSeq(int seq)
184 int oldseq = this.endSeq;
185 setEndSeqInternal(seq);
186 changeSupport.firePropertyChange("endseq", oldseq, seq);
189 private void setEndSeqInternal(int seq)
191 if (seq >= al.getHeight())
193 seq = al.getHeight() - 1;
203 * Get start residue of viewport
205 public int getStartRes()
211 * Get end residue of viewport
213 public int getEndRes()
219 * Get start sequence of viewport
221 public int getStartSeq()
227 * Get end sequence of viewport
229 public int getEndSeq()