Mercurial > hg > orthanc-stone

comparison Framework/Layers/LineMeasureTracker.cpp @ 0:351ab0da0150

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Oct 2016 15:34:11 +0200
parents
children 7207a407bcd8
comparison
equal deleted inserted replaced
-1:000000000000 0:351ab0da0150
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #include "LineMeasureTracker.h"
34
35 #include "../Viewport/CairoFont.h"
36
37 #include <stdio.h>
38
39 namespace OrthancStone
40 {
41 LineMeasureTracker::LineMeasureTracker(IStatusBar* statusBar,
42 const SliceGeometry& slice,
43 double x,
44 double y,
45 uint8_t red,
46 uint8_t green,
47 uint8_t blue,
48 unsigned int fontSize) :
49 statusBar_(statusBar),
50 slice_(slice),
51 x1_(x),
52 y1_(y),
53 x2_(x),
54 y2_(y),
55 fontSize_(fontSize)
56 {
57 color_[0] = red;
58 color_[1] = green;
59 color_[2] = blue;
60 }
61
62
63 void LineMeasureTracker::Render(CairoContext& context,
64 double zoom)
65 {
66 context.SetSourceColor(color_[0], color_[1], color_[2]);
67
68 cairo_t* cr = context.GetObject();
69 cairo_set_line_width(cr, 2.0 / zoom);
70 cairo_move_to(cr, x1_, y1_);
71 cairo_line_to(cr, x2_, y2_);
72 cairo_stroke(cr);
73
74 if (fontSize_ != 0)
75 {
76 cairo_move_to(cr, x2_, y2_ - static_cast<double>(fontSize_) / zoom);
77 CairoFont font("sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
78 font.Draw(context, FormatLength(), static_cast<double>(fontSize_) / zoom);
79 }
80 }
81
82
83 double LineMeasureTracker::GetLength() const // In millimeters
84 {
85 Vector a = slice_.MapSliceToWorldCoordinates(x1_, y1_);
86 Vector b = slice_.MapSliceToWorldCoordinates(x2_, y2_);
87 return boost::numeric::ublas::norm_2(b - a);
88 }
89
90
91 std::string LineMeasureTracker::FormatLength() const
92 {
93 char buf[64];
94 sprintf(buf, "%0.01f cm", GetLength() / 10.0);
95 return buf;
96 }
97
98 void LineMeasureTracker::MouseMove(double x,
99 double y)
100 {
101 x2_ = x;
102 y2_ = y;
103
104 if (statusBar_ != NULL)
105 {
106 statusBar_->SetMessage("Line length: " + FormatLength());
107 }
108 }
109 }