openscenegraph-examples 3.2.0~rc1-4 / usr / share / openscenegraph / examples / osgwidgettable / osgwidgettable.cpp

// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
// $Id: osgwidgettable.cpp 43 2008-04-17 03:40:05Z cubicool $

#include <osgWidget/Util>
#include <osgWidget/WindowManager>
#include <osgWidget/Table>

const unsigned int MASK_2D = 0xF0000000;

// This examples demonstrates the use of an osgWidget::Table, which differs from a Box in
// many ways. First and foremost, a Table's size is intially known, whereas a Box can be
// dynamically added to. Secondly, a table is matrix Layout, with both vertical and
// horizontal placement cells. A Box, on the other hand, can only be vertical or horizontal.

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::Table* table = new osgWidget::Table("table", 3, 3);

    // Here we create our "cells" manually, though it will often be convenient to
    // do so algorithmically. Also, notice how we set the text name of each widget to
    // correspond with it's "index" in the table. This is merely a convenience, which
    // we use later...
    table->addWidget(new osgWidget::Widget("0, 0", 100.0f, 25.0f), 0, 0);
    table->addWidget(new osgWidget::Widget("0, 1", 100.0f, 25.0f), 0, 1);
    table->addWidget(new osgWidget::Widget("0, 2", 100.0f, 75.0f), 0, 2);
    
    table->addWidget(new osgWidget::Widget("1, 0", 200.0f, 45.0f), 1, 0);
    table->addWidget(new osgWidget::Widget("1, 1", 200.0f, 45.0f), 1, 1);
    table->addWidget(new osgWidget::Widget("1, 2", 200.0f, 45.0f), 1, 2);
    
    table->addWidget(new osgWidget::Widget("2, 0", 300.0f, 65.0f), 2, 0);
    table->addWidget(new osgWidget::Widget("2, 1", 300.0f, 65.0f), 2, 1);
    table->addWidget(new osgWidget::Widget("2, 2", 300.0f, 65.0f), 2, 2);

    table->getBackground()->setColor(0.0f, 0.0f, 0.5f, 1.0f);
    table->attachMoveCallback();

    // Use a hackish method of setting the spacing for all Widgets.
    for(osgWidget::Table::Iterator i = table->begin(); i != table->end(); i++)
        i->get()->setPadding(1.0f)
    ;

    // Now we fetch the very first 0, 0 Widget in the table using an awkward method.
    // This is merely one way to fetch a Widget from a Window, there are many others.
    // The osgWidget::Window::getByName interface will be very handy in scripting languages
    // where users will want to retrieve handles to existing Windows using a useful
    // textual name, such as "MainGUIParent" or something.
    table->getByName("0, 0")->setAlignHorizontal(osgWidget::Widget::HA_LEFT);
    table->getByName("0, 0")->setAlignVertical(osgWidget::Widget::VA_BOTTOM);
    table->getByName("0, 0")->setPadLeft(50.0f);
    table->getByName("0, 0")->setPadTop(3.0f);
    
    // Change the colors a bit to differentiate this row from the others.
    table->getByName("2, 0")->setColor(1.0f, 0.0f, 0.0f, 1.0f, osgWidget::Widget::LOWER_LEFT);
    table->getByName("2, 1")->setColor(1.0f, 0.0f, 0.0f, 0.5f);
    table->getByName("2, 2")->setColor(1.0f, 0.0f, 0.0f, 0.5f);

    wm->addChild(table);

    return createExample(viewer, wm);
}