src/GUI/gui.cxx

   1 /**************************************************************************
   2  * gui.cxx
   3  *
   4  * Written 1998 by Durk Talsma, started Juni, 1998.  For the flight gear
   5  * project.
   6  *
   7  * Additional mouse supported added by David Megginson, 1999.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  22  *
  23  * $Id$
  24  **************************************************************************/
  25
  26
  27 #ifdef HAVE_CONFIG_H
  28 #  include <config.h>
  29 #endif
  30
  31 #include <simgear/compiler.h>
  32
  33 #include <string>
  34
  35 #include <simgear/structure/exception.hxx>
  36 #include <simgear/misc/sg_path.hxx>
  37 #include <simgear/props/props.hxx>
  38 #include <simgear/props/props_io.hxx>
  39
  40 #include <plib/pu.h>
  41
  42 #include <Main/main.hxx>
  43 #include <Main/globals.hxx>
  44 #include <Main/locale.hxx>
  45 #include <Main/fg_props.hxx>
  46 #include <Viewer/WindowSystemAdapter.hxx>
  47 #include <Viewer/CameraGroup.hxx>
  48 #include <GUI/new_gui.hxx>
  49 #include <GUI/FGFontCache.hxx>
  50
  51 #include "gui.h"
  52 #include "layout.hxx"
  53
  54 #include <osg/GraphicsContext>
  55
  56 using namespace flightgear;
  57
  58 puFont guiFnt = 0;
  59
  60
  61 /* -------------------------------------------------------------------------
  62 init the gui
  63 _____________________________________________________________________*/
  64
  65 namespace
  66 {
  67 class GUIInitOperation : public GraphicsContextOperation
  68 {
  69 public:
  70     GUIInitOperation() : GraphicsContextOperation(std::string("GUI init"))
  71     {
  72     }
  73     void run(osg::GraphicsContext* gc)
  74     {
  75         WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
  76         wsa->puInitialize();
  77         puSetDefaultStyle         ( PUSTYLE_SMALL_SHADED ); //PUSTYLE_DEFAULT
  78         puSetDefaultColourScheme  (0.8, 0.8, 0.9, 1);
  79
  80         FGFontCache *fc = globals->get_fontcache();
  81         fc->initializeFonts();
  82         puFont *GuiFont
  83             = fc->get(globals->get_locale()->getDefaultFont("typewriter.txf"),
  84                       15);
  85         puSetDefaultFonts(*GuiFont, *GuiFont);
  86         guiFnt = puGetDefaultLabelFont();
  87
  88         LayoutWidget::setDefaultFont(GuiFont, 15);
  89
  90         if (!fgHasNode("/sim/startup/mouse-pointer")) {
  91             // no preference specified for mouse pointer
  92         } else if ( !fgGetBool("/sim/startup/mouse-pointer") ) {
  93             // don't show pointer
  94         } else {
  95             // force showing pointer
  96             puShowCursor();
  97         }
  98     }
  99 };
 100
 101 // Operation for querying OpenGL parameters. This must be done in a
 102 // valid OpenGL context, potentially in another thread.
 103
 104 struct GeneralInitOperation : public GraphicsContextOperation
 105 {
 106     GeneralInitOperation()
 107         : GraphicsContextOperation(std::string("General init"))
 108     {
 109     }
 110     void run(osg::GraphicsContext* gc)
 111     {
 112         SGPropertyNode* simRendering = fgGetNode("/sim/rendering");
 113
 114         simRendering->setStringValue("gl-vendor", (char*) glGetString(GL_VENDOR));
 115         SG_LOG( SG_GENERAL, SG_INFO, glGetString(GL_VENDOR));
 116
 117         simRendering->setStringValue("gl-renderer", (char*) glGetString(GL_RENDERER));
 118         SG_LOG( SG_GENERAL, SG_INFO, glGetString(GL_RENDERER));
 119
 120         simRendering->setStringValue("gl-version", (char*) glGetString(GL_VERSION));
 121         SG_LOG( SG_GENERAL, SG_INFO, glGetString(GL_VERSION));
 122
 123         // Old hardware without support for OpenGL 2.0 does not support GLSL and
 124         // glGetString returns NULL for GL_SHADING_LANGUAGE_VERSION.
 125         //
 126         // See http://flightgear.org/forums/viewtopic.php?f=17&t=19670&start=15#p181945
 127         const char* glsl_version = (const char*) glGetString(GL_SHADING_LANGUAGE_VERSION);
 128         if( !glsl_version )
 129           glsl_version = "UNSUPPORTED";
 130         simRendering->setStringValue("gl-shading-language-version", glsl_version);
 131         SG_LOG( SG_GENERAL, SG_INFO, glsl_version);
 132
 133         GLint tmp;
 134         glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
 135         simRendering->setIntValue("max-texture-size", tmp);
 136
 137         glGetIntegerv( GL_DEPTH_BITS, &tmp );
 138         simRendering->setIntValue("depth-buffer-bits", tmp);
 139     }
 140 };
 141
 142 osg::ref_ptr<GUIInitOperation> initOp;
 143
 144 }
 145
 146 /** Initializes GUI.
 147  * Returns true when done, false when still busy (call again). */
 148 bool guiInit()
 149 {
 150     static osg::ref_ptr<GeneralInitOperation> genOp;
 151
 152     if (!genOp.valid())
 153     {
 154         // Pick some window on which to do queries.
 155         // XXX Perhaps all this graphics initialization code should be
 156         // moved to renderer.cxx?
 157         genOp = new GeneralInitOperation;
 158         osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
 159         WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
 160         osg::GraphicsContext* gc = 0;
 161         if (guiCamera)
 162             gc = guiCamera->getGraphicsContext();
 163         if (gc) {
 164             gc->add(genOp.get());
 165             initOp = new GUIInitOperation;
 166             gc->add(initOp.get());
 167         } else {
 168             wsa->windows[0]->gc->add(genOp.get());
 169         }
 170         return false; // not ready yet
 171     }
 172     else
 173     {
 174         if (!genOp->isFinished())
 175             return false;
 176         if (!initOp.valid())
 177             return true;
 178         if (!initOp->isFinished())
 179             return false;
 180         genOp = 0;
 181         initOp = 0;
 182         // we're done
 183         return true;
 184     }
 185 }