/usr/share/openscenegraph/examples/osgwidgetscrolled/osgwidgetscrolled.cpp is in openscenegraph-examples 3.2.0~rc1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | // -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
// $Id: osgwidgetframe.cpp 34 2008-04-07 03:12:41Z cubicool $
#include <osgDB/ReadFile>
#include <osgWidget/Util>
#include <osgWidget/WindowManager>
#include <osgWidget/Frame>
#include <osgWidget/Box>
const unsigned int MASK_2D = 0xF0000000;
// NOTE: THIS IS JUST A TEMPORARY HACK! :) This functionality will all eventually be
// encapsulate into another class in osgWidget proper.
bool scrollWindow(osgWidget::Event& ev) {
// The first thing we need to do is make sure we have a Frame object...
osgWidget::Frame* frame = dynamic_cast<osgWidget::Frame*>(ev.getWindow());
if(!frame) return false;
// And now we need to make sure our Frame has a valid internal EmbeddedWindow widget.
osgWidget::Window::EmbeddedWindow* ew =
dynamic_cast<osgWidget::Window::EmbeddedWindow*>(frame->getEmbeddedWindow())
;
if(!ew) return false;
// Lets get the visible area so that we can use it to make sure our scrolling action
// is necessary in the first place.
const osgWidget::Quad& va = ew->getWindow()->getVisibleArea();
// The user wants to scroll up; make sure that the visible area's Y origin isn't already
// at 0.0f, 0.0f.
if(ev.getWindowManager()->isMouseScrollingUp() && va[1] != 0.0f)
ew->getWindow()->addVisibleArea(0, -20)
;
else if(va[1] <= (ew->getWindow()->getHeight() - ew->getHeight()))
ew->getWindow()->addVisibleArea(0, 20)
;
// We need to manually call update to make sure the visible area scissoring is done
// properly.
frame->update();
return true;
}
bool changeTheme(osgWidget::Event& ev) {
std::string theme;
if(ev.key == osgGA::GUIEventAdapter::KEY_Right)
theme = "osgWidget/theme-1.png"
;
else if(ev.key == osgGA::GUIEventAdapter::KEY_Left)
theme = "osgWidget/theme-2.png"
;
else return false;
osgWidget::Frame* frame = dynamic_cast<osgWidget::Frame*>(ev.getWindow());
if(!frame) return false;
// This is just one way to access all our Widgets; we could just as well have used:
//
// for(osgWidget::Frame::Iterator i = frame.begin(); i != frame.end() i++) {}
//
// ...and it have worked, too.
for(unsigned int row = 0; row < 3; row++) {
for(unsigned int col = 0; col < 3; col++) {
frame->getByRowCol(row, col)->setImage(theme);
}
}
return true;
}
int main(int argc, char** argv) {
osgViewer::Viewer viewer;
osgWidget::WindowManager* wm = new osgWidget::WindowManager(
&viewer,
1280.0f,
1024.0f,
MASK_2D,
osgWidget::WindowManager::WM_PICK_DEBUG
//osgWidget::WindowManager::WM_NO_INVERT_Y
);
osgWidget::Frame* frame = osgWidget::Frame::createSimpleFrameFromTheme(
"frame",
osgDB::readImageFile("osgWidget/theme.png"),
40.0f,
40.0f,
osgWidget::Frame::FRAME_ALL
);
frame->getBackground()->setColor(0.0f, 0.0f, 0.0f, 0.0f);
// This is our Transformers box. :)
osgWidget::Box* box = new osgWidget::Box("images", osgWidget::Box::VERTICAL);
osgWidget::Widget* img1 = new osgWidget::Widget("im1", 512.0f, 512.0f);
osgWidget::Widget* img2 = new osgWidget::Widget("im2", 512.0f, 512.0f);
osgWidget::Widget* img3 = new osgWidget::Widget("im3", 512.0f, 512.0f);
osgWidget::Widget* img4 = new osgWidget::Widget("im4", 512.0f, 512.0f);
img1->setImage("osgWidget/scrolled1.jpg", true);
img2->setImage("osgWidget/scrolled2.jpg", true);
img3->setImage("osgWidget/scrolled3.jpg", true);
img4->setImage("osgWidget/scrolled4.jpg", true);
img1->setMinimumSize(10.0f, 10.0f);
img2->setMinimumSize(10.0f, 10.0f);
img3->setMinimumSize(10.0f, 10.0f);
img4->setMinimumSize(10.0f, 10.0f);
box->addWidget(img1);
box->addWidget(img2);
box->addWidget(img3);
box->addWidget(img4);
box->setEventMask(osgWidget::EVENT_NONE);
//frame->getEmbeddedWindow()->setWindow(box);
frame->setWindow(box);
frame->getEmbeddedWindow()->setColor(1.0f, 1.0f, 1.0f, 1.0f);
frame->resize(300.0f, 300.0f);
frame->addCallback(new osgWidget::Callback(&scrollWindow, osgWidget::EVENT_MOUSE_SCROLL));
frame->addCallback(new osgWidget::Callback(&changeTheme, osgWidget::EVENT_KEY_DOWN));
wm->addChild(frame);
return osgWidget::createExample(viewer, wm);
}
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