| OZ++ Sample: ScrolledDrawingArea |
/****************************************************************************** * * Copyright (c) 2014 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * ScrolledDrawingArea.cpp * *****************************************************************************/ #include <oz++/motif/ApplicationView.h> #include <oz++/motif/ScrolledDrawingArea.h> #include <oz++/motif/DC.h> #include <oz++/motif/Color.h> namespace OZ { class MainView :public ApplicationView { private: SmartPtr<ScrolledDrawingArea> scdrawinga; void draw(Action& action) { DrawingArea* drawinga = scdrawinga -> getDrawingArea(); DC dc(drawinga); Color color(drawinga); dc.setForeground(color.allocNamedColor("blue")); for(int i = 0; i<30; i++) { dc.drawEllipse(10*i, 10*i, 10+10*i, 10+10*i); } } public: MainView(Application& applet, const char* name, Args& args) :ApplicationView(applet, name, args) { Args ar; ar.set(XmNscrollingPolicy, XmAUTOMATIC); ar.set(XmNscrollBarDisplayPolicy, XmVARIABLE); scdrawinga = new ScrolledDrawingArea(this, "drawinga", ar); DrawingArea* drawinga = scdrawinga->getDrawingArea(); drawinga -> set(XmNwidth, 500); drawinga -> set(XmNheight, 500); drawinga -> addCallback(XmNexposeCallback, this, (Callback)&MainView::draw, NULL); } ~MainView() { } }; } // int main(int argc, char** argv) { try { const char* appclass = argv[0]; Application applet(appclass, argc, argv); Args args; args.set(XmNgeometry, "300x300"); MainView view(applet, argv[0], args); view.realize(); applet.run(); } catch (Exception& ex) { caught(ex); } return 0; }