1 /*
2 * Patchbay Canvas engine using QGraphicsView/Scene
3 * Copyright (C) 2010-2012 Filipe Coelho <falktx@falktx.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * For a full copy of the GNU General Public License see the COPYING file
16 */
17
18 #include "canvasbezierline.h"
19
20 #include <QtGui/QPainter>
21
22 #include "canvasport.h"
23 #include "canvasportglow.h"
24
25 START_NAMESPACE_PATCHCANVAS
26
CanvasBezierLine(CanvasPort * item1_,CanvasPort * item2_,QGraphicsItem * parent)27 CanvasBezierLine::CanvasBezierLine(CanvasPort* item1_, CanvasPort* item2_, QGraphicsItem* parent) :
28 QGraphicsPathItem(parent, canvas.scene)
29 {
30 item1 = item1_;
31 item2 = item2_;
32
33 m_locked = false;
34 m_lineSelected = false;
35
36 setBrush(QColor(0,0,0,0));
37 setGraphicsEffect(0);
38 updateLinePos();
39 }
40
~CanvasBezierLine()41 CanvasBezierLine::~CanvasBezierLine()
42 {
43 setGraphicsEffect(0);
44 }
45
deleteFromScene()46 void CanvasBezierLine::deleteFromScene()
47 {
48 canvas.scene->removeItem(this);
49 delete this;
50 }
51
isLocked() const52 bool CanvasBezierLine::isLocked() const
53 {
54 return m_locked;
55 }
56
setLocked(bool yesno)57 void CanvasBezierLine::setLocked(bool yesno)
58 {
59 m_locked = yesno;
60 }
61
isLineSelected() const62 bool CanvasBezierLine::isLineSelected() const
63 {
64 return m_lineSelected;
65 }
66
setLineSelected(bool yesno)67 void CanvasBezierLine::setLineSelected(bool yesno)
68 {
69 if (m_locked)
70 return;
71
72 if (options.eyecandy == EYECANDY_FULL)
73 {
74 if (yesno)
75 setGraphicsEffect(new CanvasPortGlow(item1->getPortType(), toGraphicsObject()));
76 else
77 setGraphicsEffect(0);
78 }
79
80 m_lineSelected = yesno;
81 updateLineGradient();
82 }
83
updateLinePos()84 void CanvasBezierLine::updateLinePos()
85 {
86 if (item1->getPortMode() == PORT_MODE_OUTPUT)
87 {
88 int item1_x = item1->scenePos().x() + item1->getPortWidth()+12;
89 int item1_y = item1->scenePos().y() + 7.5;
90
91 int item2_x = item2->scenePos().x();
92 int item2_y = item2->scenePos().y()+7.5;
93
94 int item1_mid_x = abs(item1_x-item2_x)/2;
95 int item1_new_x = item1_x+item1_mid_x;
96
97 int item2_mid_x = abs(item1_x-item2_x)/2;
98 int item2_new_x = item2_x-item2_mid_x;
99
100 QPainterPath path(QPointF(item1_x, item1_y));
101 path.cubicTo(item1_new_x, item1_y, item2_new_x, item2_y, item2_x, item2_y);
102 setPath(path);
103
104 m_lineSelected = false;
105 updateLineGradient();
106 }
107 }
108
type() const109 int CanvasBezierLine::type() const
110 {
111 return CanvasBezierLineType;
112 }
113
updateLineGradient()114 void CanvasBezierLine::updateLineGradient()
115 {
116 short pos1, pos2;
117 int pos_top = boundingRect().top();
118 int pos_bot = boundingRect().bottom();
119
120 if (item2->scenePos().y() >= item1->scenePos().y())
121 {
122 pos1 = 0;
123 pos2 = 1;
124 }
125 else
126 {
127 pos1 = 1;
128 pos2 = 0;
129 }
130
131 PortType port_type1 = item1->getPortType();
132 PortType port_type2 = item2->getPortType();
133 QLinearGradient port_gradient(0, pos_top, 0, pos_bot);
134
135 if (port_type1 == PORT_TYPE_AUDIO_JACK)
136 port_gradient.setColorAt(pos1, m_lineSelected ? canvas.theme->line_audio_jack_sel : canvas.theme->line_audio_jack);
137 else if (port_type1 == PORT_TYPE_MIDI_JACK)
138 port_gradient.setColorAt(pos1, m_lineSelected ? canvas.theme->line_midi_jack_sel : canvas.theme->line_midi_jack);
139 else if (port_type1 == PORT_TYPE_MIDI_A2J)
140 port_gradient.setColorAt(pos1, m_lineSelected ? canvas.theme->line_midi_a2j_sel : canvas.theme->line_midi_a2j);
141 else if (port_type1 == PORT_TYPE_MIDI_ALSA)
142 port_gradient.setColorAt(pos1, m_lineSelected ? canvas.theme->line_midi_alsa_sel : canvas.theme->line_midi_alsa);
143
144 if (port_type2 == PORT_TYPE_AUDIO_JACK)
145 port_gradient.setColorAt(pos2, m_lineSelected ? canvas.theme->line_audio_jack_sel : canvas.theme->line_audio_jack);
146 else if (port_type2 == PORT_TYPE_MIDI_JACK)
147 port_gradient.setColorAt(pos2, m_lineSelected ? canvas.theme->line_midi_jack_sel : canvas.theme->line_midi_jack);
148 else if (port_type2 == PORT_TYPE_MIDI_A2J)
149 port_gradient.setColorAt(pos2, m_lineSelected ? canvas.theme->line_midi_a2j_sel : canvas.theme->line_midi_a2j);
150 else if (port_type2 == PORT_TYPE_MIDI_ALSA)
151 port_gradient.setColorAt(pos2, m_lineSelected ? canvas.theme->line_midi_alsa_sel : canvas.theme->line_midi_alsa);
152
153 setPen(QPen(port_gradient, 2));
154 }
155
paint(QPainter * painter,const QStyleOptionGraphicsItem * option,QWidget * widget)156 void CanvasBezierLine::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
157 {
158 painter->setRenderHint(QPainter::Antialiasing, bool(options.antialiasing));
159 QGraphicsPathItem::paint(painter, option, widget);
160 }
161
162 END_NAMESPACE_PATCHCANVAS
163