1 // Airports forward declarations
3 // Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 #include "CanvasWidget.hxx"
25 #include <Canvas/canvas_mgr.hxx>
26 #include <Main/fg_os.hxx> // fgGetKeyModifiers()
27 #include <Scripting/NasalSys.hxx>
29 #include <simgear/canvas/Canvas.hxx>
30 #include <simgear/canvas/MouseEvent.hxx>
32 //------------------------------------------------------------------------------
33 CanvasWidget::CanvasWidget( int x, int y,
34 int width, int height,
35 SGPropertyNode* props,
36 const std::string& module ):
37 puObject(x, y, width, height),
38 _canvas_mgr( dynamic_cast<CanvasMgr*>(globals->get_subsystem("Canvas")) ),
41 // automatically resize viewport of canvas if no size is given
42 _auto_viewport( !props->hasChild("view") )
46 SG_LOG(SG_GENERAL, SG_ALERT, "CanvasWidget: failed to get canvas manager!");
50 _canvas = _canvas_mgr->createCanvas
52 props->getStringValue("name", "gui-anonymous")
56 // Get canvas viewport size. If not specified use the widget dimensions
57 props->getIntValue("view[0]", width),
58 props->getIntValue("view[1]", height)
61 SGPropertyNode* cprops = _canvas->getProps();
62 cprops->setIntValue("size[0]", view[0] * 2); // use higher resolution
63 cprops->setIntValue("size[1]", view[1] * 2); // for antialias
64 cprops->setIntValue("view[0]", view[0]);
65 cprops->setIntValue("view[1]", view[1]);
66 cprops->setBoolValue("render-always", true);
67 cprops->setStringValue( "name",
68 props->getStringValue("name", "gui-anonymous") );
70 SGPropertyNode *nasal = props->getNode("nasal");
74 FGNasalSys *nas = dynamic_cast<FGNasalSys*>(globals->get_subsystem("nasal"));
78 "CanvasWidget: Failed to get nasal subsystem!" );
80 const std::string file = std::string("__canvas:")
81 + cprops->getStringValue("name");
83 SGPropertyNode *load = nasal->getNode("load");
86 const char *s = load->getStringValue();
87 nas->handleCommand(module.c_str(), file.c_str(), s, cprops);
91 //------------------------------------------------------------------------------
92 CanvasWidget::~CanvasWidget()
98 // Old versions of PUI are missing this defines...
99 #ifndef PU_SCROLL_UP_BUTTON
100 # define PU_SCROLL_UP_BUTTON 3
102 #ifndef PU_SCROLL_DOWN_BUTTON
103 # define PU_SCROLL_DOWN_BUTTON 4
106 //------------------------------------------------------------------------------
107 void CanvasWidget::doHit(int button, int updown, int x, int y)
109 puObject::doHit(button, updown, x, y);
111 // CTRL allows resizing and SHIFT allows moving the window
112 if( fgGetKeyModifiers() & (KEYMOD_CTRL | KEYMOD_SHIFT) )
115 namespace sc = simgear::canvas;
116 sc::MouseEventPtr event(new sc::MouseEvent);
119 _time = globals->get_props()->getNode("/sim/time/elapsed-sec");
120 event->time = _time->getDoubleValue();
123 _view_height = globals->get_props()->getNode("/sim/gui/canvas/size[1]");
124 event->screen_pos.set(x, _view_height->getIntValue() - y);
126 event->client_pos.set(x - abox.min[0], abox.max[1] - y);
127 event->delta.set( event->getScreenX() - _last_x,
128 event->getScreenY() - _last_y );
130 _last_x = event->getScreenX();
131 _last_y = event->getScreenY();
136 event->button = osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON;
138 case PU_MIDDLE_BUTTON:
139 event->button = osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON;
141 case PU_RIGHT_BUTTON:
142 event->button = osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON;
144 case PU_SCROLL_UP_BUTTON:
145 case PU_SCROLL_DOWN_BUTTON:
146 // Only let PU_DOWN trigger a scroll wheel event
147 if( updown != PU_DOWN )
150 event->type = sc::Event::WHEEL;
151 event->delta.y() = button == PU_SCROLL_UP_BUTTON ? 1 : -1;
153 _canvas->handleMouseEvent(event);
157 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown button: " << button);
164 event->type = sc::Event::MOUSE_DOWN;
165 puSetActiveWidget(this, x, y);
168 event->type = sc::Event::MOUSE_UP;
169 puDeactivateWidget();
172 event->type = sc::Event::DRAG;
175 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown updown: " << updown);
179 _canvas->handleMouseEvent(event);
182 //------------------------------------------------------------------------------
183 int CanvasWidget::checkKey(int key, int updown)
185 return puObject::checkKey(key, updown);
188 //------------------------------------------------------------------------------
189 void CanvasWidget::setSize(int w, int h)
191 puObject::setSize(w, h);
195 _canvas->getProps()->setIntValue("view[0]", w);
196 _canvas->getProps()->setIntValue("view[1]", h);
200 //------------------------------------------------------------------------------
201 void CanvasWidget::draw(int dx, int dy)
203 glEnable(GL_TEXTURE_2D);
204 glBindTexture(GL_TEXTURE_2D, _canvas_mgr->getCanvasTexId(_canvas));
207 glTexCoord2f(0,0); glVertex2f(dx + abox.min[0], dy + abox.min[1]);
208 glTexCoord2f(1,0); glVertex2f(dx + abox.max[0], dy + abox.min[1]);
209 glTexCoord2f(1,1); glVertex2f(dx + abox.max[0], dy + abox.max[1]);
210 glTexCoord2f(0,1); glVertex2f(dx + abox.min[0], dy + abox.max[1]);
212 glDisable(GL_TEXTURE_2D);