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diff --git a/src/glw/boilerplate.c b/src/glw/boilerplate.c
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-/*
-
- BOILERPLATE
-
- To get started with mixed model programming with Motif and OpenGL, this
- boilerplate `application' might help get you started.
-
- This program honors two environment variables:
-
- SETVISUAL <id> Makes the application use the indicated visual,
- instead of the one chosen by glxChooseVisual.
-
- SAMEVISUAL Make the application use the same visual for the
- GUI as for the 3D GL Widget.
-
- The basic idea is to minimize colormap `flash' on systems with only one
- hardware colormap, especially when focus shifts between several
- of the application's windows, e.g. the about box.
-
- If you have suggestions for improvements, please mail to:
-
-
- Jeroen van der Zijp <[email protected]>
-
-
- Feel free to turn this into a useful program!!
-
-*/
-
-
-/*
-
- This code is hereby placed under GNU GENERAL PUBLIC LICENSE.
- Copyright (C) 1996 Jeroen van der Zijp <[email protected]>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-
-/* Include the kitchen sink */
-#include <stdio.h>
-#include <stdlib.h>
-#include <X11/Intrinsic.h>
-#include <X11/StringDefs.h>
-#include <X11/cursorfont.h>
-#include <X11/keysym.h>
-#include <Xm/Xm.h>
-#include <Xm/MainW.h>
-#include <Xm/RowColumn.h>
-#include <Xm/PushB.h>
-#include <Xm/CascadeB.h>
-#include <Xm/BulletinB.h>
-#include <Xm/DialogS.h>
-#include <Xm/Frame.h>
-#include <Xm/MessageB.h>
-#include <Xm/Form.h>
-#include <Xm/Separator.h>
-#include <Xm/MwmUtil.h>
-
-/* Now some good stuff */
-#include <GLwMDrawA.h>
-#include <GL/gl.h>
-#include <GL/glu.h>
-#include <GL/glx.h>
-
-
-/* Stuff */
-Display *display;
-Visual *gui_visual;
-Colormap gui_colormap;
-Colormap gl_colormap;
-XVisualInfo *gl_visualinfo;
-XtAppContext app_context;
-Widget toplevel;
-Widget mainwindow;
-Widget menubar;
-Widget mainform;
-Widget mainframe;
-Widget glwidget;
-Widget button;
-Widget separator;
-GLXContext glx_context;
-
-#ifndef __cplusplus
-#define c_class class
-#endif
-
-/* Requested attributes; fix as you see fit */
-static int glxConfig[]={
- GLX_RGBA,
- GLX_DOUBLEBUFFER,
- GLX_DEPTH_SIZE, 16,
- GLX_RED_SIZE, 1,
- GLX_GREEN_SIZE, 1,
- GLX_BLUE_SIZE, 1,
- None
- };
-
-
-/* Forwards */
-static void exposeCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs);
-static void initCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs);
-static void resizeCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs);
-static void inputCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs);
-static void byeCB(Widget w,XtPointer client_data,XtPointer call_data);
-static void aboutCB(Widget w,XtPointer client_data,XtPointer call_data);
-static char* showvisualclass(int cls);
-
-
-
-/* Sample application */
-int main(int argc, char *argv[]){
- char *thevisual;
- XVisualInfo vi;
- int nvisinfos,visid,n;
- Arg args[30];
- Widget pane,cascade,but;
-
- /*
- ** Initialize toolkit
- ** We do *not* use XtAppInitialize as we want to figure visual and
- ** colormap BEFORE we create the top level shell!!!
- */
- XtToolkitInitialize();
-
- /* Make application context */
- app_context=XtCreateApplicationContext();
-
- /* Try open display */
- display=XtOpenDisplay(app_context,NULL,"boilerPlate","BoilerPlate",NULL,0,&argc,argv);
-
- /* Report failure */
- if(!display){
- fprintf(stderr,"Unable to open the specified display.\n");
- fprintf(stderr,"Set your `DISPLAY' environment variable properly or\n");
- fprintf(stderr,"use the `xhost' command to authorize access to the display.\n");
- exit(1);
- }
-
- /* Check for extension; for Mesa, this is always cool */
- if(!glXQueryExtension(display,NULL,NULL)){
- fprintf(stderr,"The specified display does not support the OpenGL extension\n");
- exit(1);
- }
-
- /* Init with default visual and colormap */
- gui_visual=DefaultVisual(display,0);
- gui_colormap=DefaultColormap(display,0);
- gl_colormap=DefaultColormap(display,0);
-
- /* User insists on a specific visual */
- if((thevisual=getenv("SETVISUAL"))!=NULL){
- if(sscanf(thevisual,"%x",&visid)==1){
- vi.visualid=visid;
- gl_visualinfo=XGetVisualInfo(display,VisualIDMask,&vi,&nvisinfos);
- }
- else{
- fprintf(stderr,"Please set the `SETVISUAL' variable in hexadecimal\n");
- fprintf(stderr,"Use one of the Visual ID's reported by `xdpyinfo'\n");
- exit(1);
- }
- }
-
- /* Find visual the regular way */
- else{
- gl_visualinfo=glXChooseVisual(display,DefaultScreen(display),glxConfig);
- }
-
- /* Make sure we have a visual */
- if(!gl_visualinfo){
- fprintf(stderr,"Unable to obtain visual for graphics\n");
- exit(1);
- }
-
- /* Show what visual is being used */
- fprintf(stderr,"Using the following visual:\n");
- fprintf(stderr," visualid: %lx\n",gl_visualinfo->visualid);
- fprintf(stderr," depth: %d\n",gl_visualinfo->depth);
- fprintf(stderr," screen: %d\n",gl_visualinfo->screen);
- fprintf(stderr," bits/rgb: %d\n",gl_visualinfo->bits_per_rgb);
- fprintf(stderr," class: %s\n",showvisualclass(gl_visualinfo->c_class));
-
- /*
- ** If not using default visual, we need a colormap for this visual.
- ** Yes, the GL widget can allocate one itself, but we want to make
- ** sure the GUI and the 3D have the same one (if hardware does not
- ** allow more than one simultaneously).
- ** This prevents nasty flashing when the window with the 3D widget
- ** looses the focus.
- */
- if(gl_visualinfo->visual!=DefaultVisual(display,0)){
- fprintf(stderr,"Making another colormap\n");
- gl_colormap=XCreateColormap(display,
- RootWindow(display,0),
- gl_visualinfo->visual,
- AllocNone);
- if(!gl_colormap){
- fprintf(stderr,"Unable to create private colormap\n");
- exit(1);
- }
- }
-
- /*
- ** Use common visual for GUI and GL?
- ** Maybe you can invoke some hardware interrogation function and
- ** see if more than one hardware map is supported. For the purpose
- ** of this demo, we'll use an environment variable instead.
- */
- if(getenv("SAMEVISUAL")!=NULL){
- gui_visual=gl_visualinfo->visual;
- gui_colormap=gl_colormap;
- }
-
- fprintf(stderr,"GUI uses visual: %lx\n",XVisualIDFromVisual(gui_visual));
-
- /* Create application shell, finally */
- n=0;
- XtSetArg(args[n],XmNvisual,gui_visual); n++; /* Plug in that visual */
- XtSetArg(args[n],XmNcolormap,gui_colormap); n++; /* And that colormap */
- toplevel=XtAppCreateShell("boilerPlate","BoilerPlate",
- applicationShellWidgetClass,display,args,n);
-
-
- /* Main window */
- n=0;
- mainwindow=XmCreateMainWindow(toplevel,"window",args,n);
- XtManageChild(mainwindow);
-
- /* Make a menu */
- n=0;
- XtSetArg(args[n],XmNmarginWidth,0); n++;
- XtSetArg(args[n],XmNmarginHeight,0); n++;
- menubar=XmCreateMenuBar(mainwindow,"menubar",args,2);
- XtManageChild(menubar);
-
- n=0;
- pane=XmCreatePulldownMenu(menubar,"pane",args,n);
- n=0;
- but=XmCreatePushButton(pane,"Open",args,n);
- XtManageChild(but);
- but=XmCreatePushButton(pane,"Save",args,n);
- XtManageChild(but);
- but=XmCreatePushButton(pane,"Save As",args,n);
- XtManageChild(but);
- but=XmCreatePushButton(pane,"Quit",args,n);
- XtAddCallback(but,XmNactivateCallback,byeCB,(XtPointer)NULL);
- XtManageChild(but);
- XtSetArg(args[0],XmNsubMenuId,pane);
- cascade=XmCreateCascadeButton(menubar,"File",args,1);
- XtManageChild(cascade);
-
- n=0;
- pane=XmCreatePulldownMenu(menubar,"pane",args,n);
- n=0;
- but=XmCreatePushButton(pane,"About",args,n);
- XtAddCallback(but,XmNactivateCallback,aboutCB,(XtPointer)NULL);
- XtManageChild(but);
- XtSetArg(args[0],XmNsubMenuId,pane);
- cascade=XmCreateCascadeButton(menubar,"Help",args,1);
- XtManageChild(cascade);
- XtVaSetValues(menubar,XmNmenuHelpWidget,cascade,NULL);
-
- /* Main window form */
- n=0;
- XtSetArg(args[n],XmNmarginWidth,5); n++;
- XtSetArg(args[n],XmNmarginHeight,5); n++;
- mainform=XmCreateForm(mainwindow,"mainForm",args,n);
- XtManageChild(mainform);
-
- /* Some nice button */
- n=0;
- XtSetArg(args[n],XmNbottomAttachment,XmATTACH_FORM); n++;
- XtSetArg(args[n],XmNrightAttachment,XmATTACH_FORM); n++;
- button=XmCreatePushButton(mainform,"Bye",args,n);
- XtAddCallback(button,XmNactivateCallback,byeCB,(XtPointer)NULL);
- XtManageChild(button);
-
- n=0;
- XtSetArg(args[n],XmNleftAttachment,XmATTACH_FORM); n++;
- XtSetArg(args[n],XmNrightAttachment,XmATTACH_FORM); n++;
- XtSetArg(args[n],XmNbottomAttachment,XmATTACH_WIDGET); n++;
- XtSetArg(args[n],XmNbottomWidget,button); n++;
- XtSetArg(args[n],XmNshadowType,XmSHADOW_ETCHED_IN); n++;
- separator=XmCreateSeparator(mainform,"separator",args,n);
- XtManageChild(separator);
-
- /* Main window frame */
- n = 0;
- XtSetArg(args[n],XmNleftAttachment,XmATTACH_FORM); n++;
- XtSetArg(args[n],XmNrightAttachment,XmATTACH_FORM); n++;
- XtSetArg(args[n],XmNtopAttachment,XmATTACH_FORM); n++;
- XtSetArg(args[n],XmNbottomAttachment,XmATTACH_WIDGET); n++;
- XtSetArg(args[n],XmNbottomWidget,separator); n++;
- XtSetArg(args[n],XmNshadowType,XmSHADOW_IN); n++;
- mainframe = XmCreateFrame(mainform,"mainFrame",args,n);
- XtManageChild(mainframe);
-
- /* GL drawing area */
- n = 0;
- XtSetArg(args[n],XmNcolormap,gl_colormap); n++;
- XtSetArg(args[n],GLwNvisualInfo,gl_visualinfo); n++;
- XtSetArg(args[n],GLwNinstallColormap,True); n++;
- XtSetArg(args[n],XmNtraversalOn,True); n++;
- XtSetArg(args[n],XmNwidth,400); n++;
- XtSetArg(args[n],XmNheight,300); n++;
- glwidget = GLwCreateMDrawingArea(mainframe,"glWidget",args,n);
- XtAddCallback(glwidget,GLwNexposeCallback,(XtCallbackProc)exposeCB,(XtPointer)NULL);
- XtAddCallback(glwidget,GLwNresizeCallback,(XtCallbackProc)resizeCB,(XtPointer)NULL);
- XtAddCallback(glwidget,GLwNginitCallback,(XtCallbackProc)initCB,(XtPointer)NULL);
- XtAddCallback(glwidget,GLwNinputCallback,(XtCallbackProc)inputCB,(XtPointer)NULL);
- XtManageChild(glwidget);
-
- /* Set into main window */
- XmMainWindowSetAreas(mainwindow,menubar,NULL,NULL,NULL,mainform);
- XtRealizeWidget(toplevel);
-
- /* Loop until were done */
- XtAppMainLoop(app_context);
- return 0;
- }
-
-
-/* Show visual class */
-static char* showvisualclass(int cls){
- if(cls==TrueColor) return "TrueColor";
- if(cls==DirectColor) return "DirectColor";
- if(cls==PseudoColor) return "PseudoColor";
- if(cls==StaticColor) return "StaticColor";
- if(cls==GrayScale) return "GrayScale";
- if(cls==StaticGray) return "StaticGray";
- return "Unknown";
- }
-
-
-static void exposeCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs){
- GLwDrawingAreaMakeCurrent(glwidget,glx_context);
-
- glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
- glMatrixMode(GL_PROJECTION);
-
- glLoadIdentity();
- glOrtho(-1.0,1.0,-1.0,1.0,0.0,1.0);
-
- glMatrixMode(GL_MODELVIEW);
-
- glLoadIdentity();
-
- glColor3f(1.0,0.0,0.0);
- glBegin(GL_LINE_STRIP);
- glVertex3f(-1.0,-1.0,0.0);
- glVertex3f( 1.0, 1.0,0.0);
- glEnd();
- glXSwapBuffers(display,XtWindow(glwidget));
- }
-
-
-/* Initialize widget */
-static void initCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs){
-
- /* First, create context. We prefer direct rendering */
- glx_context=glXCreateContext(display,gl_visualinfo,0,TRUE);
- if(!glx_context){
- fprintf(stderr,"Unable to create gl context\n");
- exit(1);
- }
-
- /* Make it current */
- GLwDrawingAreaMakeCurrent(glwidget,glx_context);
-
- /* Set a viewport */
- glViewport(0,0,cbs->width,cbs->height);
-
- /* You might want to do a lot more here ... */
- glEnable(GL_DEPTH_TEST);
- glDepthFunc(GL_LEQUAL);
- glClearColor(1.0,1.0,1.0,1.0);
- glClearDepth(1.0);
-
-
- }
-
-
-/* Widget changed size, so adjust txform */
-static void resizeCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs){
- GLwDrawingAreaMakeCurrent(glwidget,glx_context);
- glViewport(0,0,cbs->width,cbs->height);
-
- /* blablabla */
- }
-
-
-/* Boilerplate event handling */
-static void inputCB(Widget w,XtPointer client_data,GLwDrawingAreaCallbackStruct *cbs){
- switch(cbs->event->type){
- case ButtonPress:
- switch(cbs->event->xbutton.button){
- case Button1: fprintf(stderr,"Pressed 1\n"); break;
- case Button2: fprintf(stderr,"Pressed 2\n"); break;
- case Button3: fprintf(stderr,"Pressed 3\n"); break;
- }
- break;
- case ButtonRelease:
- switch(cbs->event->xbutton.button){
- case Button1: fprintf(stderr,"Released 1\n"); break;
- case Button2: fprintf(stderr,"Released 2\n"); break;
- case Button3: fprintf(stderr,"Released 3\n"); break;
- }
- break;
- case MotionNotify:
- fprintf(stderr,"Moved mouse to (%d %d)\n",
- cbs->event->xbutton.x,
- cbs->event->xbutton.y);
- break;
- }
- }
-
-
-/* Hasta la vista, baby */
-static void byeCB(Widget w,XtPointer client_data,XtPointer call_data){
- exit(0);
- }
-
-
-/* Pop informative panel */
-static void aboutCB(Widget w,XtPointer client_data,XtPointer call_data){
- Arg args[10];
- XmString str;
- Widget box;
- str=XmStringCreateLtoR("Boilerplate Mixed Model Programming Example\n\n (C) 1996 Jeroen van der Zijp \n\n [email protected]",XmSTRING_DEFAULT_CHARSET);
- XtSetArg(args[0],XmNnoResize,True);
- XtSetArg(args[1],XmNautoUnmanage,True);
- XtSetArg(args[2],XmNmessageString,str);
- XtSetArg(args[3],XmNdefaultPosition,False);
- box=XmCreateInformationDialog(toplevel,"About Boilerplate",args,4);
- XtManageChild(box);
- XtUnmanageChild(XmMessageBoxGetChild(box,XmDIALOG_HELP_BUTTON));
- XtUnmanageChild(XmMessageBoxGetChild(box,XmDIALOG_CANCEL_BUTTON));
- XmStringFree(str);
- }
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