1

utils/mxtk/mxglwindow.cpp

@@ -0,0 +1,190 @@
+//
+//                 mxToolKit (c) 1999 by Mete Ciragan
+//
+// file:           mxGlWindow.cpp
+// implementation: Win32 API
+// last modified:  Apr 21 1999, Mete Ciragan
+// copyright:      The programs and associated files contained in this
+//                 distribution were developed by Mete Ciragan. The programs
+//                 are not in the public domain, but they are freely
+//                 distributable without licensing fees. These programs are
+//                 provided without guarantee or warrantee expressed or
+//                 implied.
+//
+#include "mxtk/mxGlWindow.h"
+#include <windows.h>
+//#include <ostream.h"
+
+
+
+static int g_formatMode = mxGlWindow::FormatDouble;
+static int g_formatColorBits = 24;
+static int g_formatDepthBits = 16;
+
+
+
+class mxGlWindow_i
+{
+public:
+	HDC hdc;
+	HGLRC hglrc;
+};
+
+
+
+mxGlWindow::mxGlWindow (mxWindow *parent, int x, int y, int w, int h, const char *label, int style)
+: mxWindow (parent, x, y, w, h, label, style)
+{
+	PIXELFORMATDESCRIPTOR pfd =
+	{
+		sizeof (PIXELFORMATDESCRIPTOR),		// size of this pfd
+		 1,		// version number
+		 PFD_DRAW_TO_WINDOW |	// support window
+		 PFD_SUPPORT_OPENGL |	// support OpenGL
+		 PFD_DOUBLEBUFFER,	// double buffered
+		 PFD_TYPE_RGBA,	// RGBA type
+		 24,		// 24-bit color depth
+		 0, 0, 0, 0, 0, 0,	// color bits ignored
+		 0,		// no alpha buffer
+		 0,		// shift bit ignored
+		 0,		// no accumulation buffer
+		 0, 0, 0, 0,	// accum bits ignored
+		 16,		// 32-bit z-buffer      
+		 0,		// no stencil buffer
+		 0,		// no auxiliary buffer
+		 PFD_MAIN_PLANE,	// main layer
+		 0,		// reserved
+		 0, 0, 0	// layer masks ignored
+	};
+
+	d_this = new mxGlWindow_i;
+
+	pfd.cColorBits = g_formatColorBits;
+	pfd.cDepthBits = g_formatDepthBits;
+
+	bool error = false;
+
+	if ((d_this->hdc = GetDC ((HWND) getHandle ())) == NULL)
+	{
+		error = true;
+		goto done;
+	}
+
+	int pfm;
+	if ((pfm = ChoosePixelFormat (d_this->hdc, &pfd)) == 0)
+	{
+		error = true;
+		goto done;
+	}
+
+	if (SetPixelFormat (d_this->hdc, pfm, &pfd) == FALSE)
+	{
+		error = true;
+		goto done;
+	}
+
+	DescribePixelFormat (d_this->hdc, pfm, sizeof (pfd), &pfd);
+
+	if ((d_this->hglrc = wglCreateContext (d_this->hdc)) == 0)
+	{
+		error = true;
+		goto done;
+	}
+
+	if (!wglMakeCurrent (d_this->hdc, d_this->hglrc))
+	{
+		error = true;
+		goto done;
+	}
+
+	setType (MX_GLWINDOW);
+	setDrawFunc (0);
+
+done:
+	if (error)
+		delete this;
+}
+
+
+
+mxGlWindow::~mxGlWindow ()
+{
+	if (d_this->hglrc)
+	{
+		wglMakeCurrent (NULL, NULL);
+		//wglDeleteContext (d_this->hglrc);
+	}
+
+	if (d_this->hdc)
+		ReleaseDC ((HWND) getHandle (), d_this->hdc);
+
+	delete d_this;
+}
+
+
+
+int
+mxGlWindow::handleEvent (mxEvent *event)
+{
+	return 0;
+}
+
+
+
+void
+mxGlWindow::redraw ()
+{
+	makeCurrent ();
+	if (d_drawFunc)
+		d_drawFunc ();
+	else
+		draw ();
+	swapBuffers ();
+}
+
+
+
+void
+mxGlWindow::draw ()
+{
+}
+
+
+
+int
+mxGlWindow::makeCurrent ()
+{
+	if (wglMakeCurrent (d_this->hdc, d_this->hglrc))
+		return 1;
+
+	return 0;
+}
+
+
+
+int
+mxGlWindow::swapBuffers ()
+{
+	if (SwapBuffers (d_this->hdc))
+		return 1;
+
+	return 0;
+}
+
+
+
+void
+mxGlWindow::setDrawFunc (void (*func) (void))
+{
+	d_drawFunc = func;
+}
+
+
+
+void
+mxGlWindow::setFormat (int mode, int colorBits, int depthBits)
+{
+	g_formatMode = mode;
+	g_formatColorBits = colorBits;
+	g_formatDepthBits = depthBits;
+}