From eb8207ff1bde8a1e092e60d4b2c15336c78e3a40 Mon Sep 17 00:00:00 2001
From: Matthias Melcher <fltk@matthiasm.com>
Date: Sun, 17 Jan 2016 00:44:07 +0000
Subject: Trying to create a more detaild way to configure the library, added
 runtime information, added an OpenGL graphics driver that renders a button on
 top of an OpenGL window (see test/cube).

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11006 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 test/cube.cxx | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'test')

diff --git a/test/cube.cxx b/test/cube.cxx
index 9f4cf0aa6..7f7d37c4b 100644
--- a/test/cube.cxx
+++ b/test/cube.cxx
@@ -99,6 +99,7 @@ void cube_box::draw() {
     glFrustum(-1,1,-1,1,2,10000);
     glTranslatef(0,0,-10);
     gl_font(FL_HELVETICA_BOLD, 16 );
+    glClearColor(0.4, 0.4, 0.4, 0);
   }
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   glPushMatrix();
@@ -113,6 +114,10 @@ void cube_box::draw() {
   glDisable(GL_DEPTH_TEST);
   gl_draw(wire ? "Cube: wire" : "Cube: flat", -4.5f, -4.5f );
   glEnable(GL_DEPTH_TEST);
+
+  // if an OpenGL graphics driver is installed, give it a chance
+  // to draw additional graphics
+  if (Fl::cfg_gfx_opengl) Fl_Gl_Window::draw();
 }
 
 int cube_box::handle(int e) {
@@ -140,6 +145,11 @@ void makeform(const char *name) {
   flat = new Fl_Radio_Light_Button(390,50,100,30,"Flat");
   button = new Fl_Button(390,340,100,30,"Exit");
   cube = new cube_box(23,23,344,344, 0);
+  if (Fl::cfg_gfx_opengl) { // try to overlay a button onto an OpenGL window
+    cube->begin();
+    /*Fl_Button *test =*/ new Fl_Button(35, 105, 100, 30, "Test");
+    cube->end();
+  }
   cube2 = new cube_box(513,23,344,344, 0);
   Fl_Box *b = new Fl_Box(FL_NO_BOX,cube->x(),size->y(),
 			 cube->w(),size->h(),0);
-- 
cgit v1.2.3