diff options
| author | Sven Gothel <[email protected]> | 2000-11-18 06:43:49 +0000 |
|---|---|---|
| committer | Sven Gothel <[email protected]> | 2000-11-18 06:43:49 +0000 |
| commit | 880653d31a8f1ff8384fdbc75b84934bceecfdb8 (patch) | |
| tree | bdafb71416f176d2a4b73bf716c9dc3f13685a8b /CNativeCode/OpenGL_Win32_JDirect.c | |
Initial revision
Diffstat (limited to 'CNativeCode/OpenGL_Win32_JDirect.c')
| -rwxr-xr-x | CNativeCode/OpenGL_Win32_JDirect.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/CNativeCode/OpenGL_Win32_JDirect.c b/CNativeCode/OpenGL_Win32_JDirect.c new file mode 100755 index 0000000..6b46874 --- /dev/null +++ b/CNativeCode/OpenGL_Win32_JDirect.c @@ -0,0 +1,182 @@ +/*
+ * Original Author: Leo Chan -- 1995
+ *
+ * Adam King 1997
+ * Ported to Win32 from X
+ *
+ * Ron Cemer 1999
+ * Ported to MS Java VM, which supports JDirect instead of JNI
+ *
+ * This file takes care of the C implementation of finding the correct
+ * Win32 window, assigning an OpenGL graphics context to it, storing that
+ * graphics context in the java class data structure.
+ *
+ * also contains the use() and swap() functions for double buffering
+ *
+ * September 12, 1997 - Adam King
+ * - Added support for rendering directly into a Canvas ( BIG rewrite )
+ *
+ * Currently, only the windows special overlapping window procs are
+ * implemented here !
+ *
+ * The other procs are implemented with JNI !
+ */
+
+#ifdef _WIN32_
+ #include "winstuff.h"
+#endif
+
+#include "GL/gl.h"
+
+#include <stdio.h>
+
+/*--------------------------------------------------------------------------
+ * here on in is just regular apple pie C
+ */
+
+#include <GL\gl.h>
+#include <gl\glu.h>
+#include <wingdi.h>
+
+#define CLASS_NAME "GL4JavaOglRenderingWindowClass"
+#define WINDOW_NAME "GL4JavaOglRenderingWindow"
+
+#define MAX_WINDOWS 1024
+
+static int verbose = 0;
+static LONG classregistered = 0;
+
+static LRESULT CALLBACK CallWndProc(int nCode,WPARAM wParam,LPARAM lParam);
+static LRESULT CALLBACK CallWndRetProc(int nCode,WPARAM wParam,LPARAM lParam);
+
+BOOL APIENTRY DllMain
+ (HANDLE hModule,
+ DWORD ul_reason_for_call,
+ LPVOID lpReserved)
+ {
+ switch (ul_reason_for_call)
+ {
+ case DLL_PROCESS_ATTACH:
+ /* Initialize various things the first time
+ that we attach this DLL to a process. */
+ if (InterlockedIncrement(&classregistered) == 1)
+ {
+ WNDCLASS wndclass;
+ LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+ wndclass.style = CS_GLOBALCLASS | CS_SAVEBITS;
+ wndclass.lpfnWndProc = (WNDPROC)WindowProc;
+ wndclass.cbClsExtra = 0;
+ wndclass.cbWndExtra = 0;
+ wndclass.hInstance = hModule;
+ wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);
+ wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);
+ wndclass.hbrBackground = (HBRUSH)GetStockObject(LTGRAY_BRUSH);
+ wndclass.lpszMenuName = NULL;
+ wndclass.lpszClassName = CLASS_NAME;
+ RegisterClass(&wndclass);
+ }
+ else
+ InterlockedDecrement(&classregistered);
+ break;
+ case DLL_PROCESS_DETACH:
+ break;
+ case DLL_THREAD_ATTACH:
+ break;
+ case DLL_THREAD_DETACH:
+ break;
+ }
+ return TRUE;
+ } /* DllMain() */
+
+// Select the pixel format for a given device context
+
+static LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+ {
+ return DefWindowProc(hwnd,uMsg,wParam,lParam);
+ } /* WindowProc() */
+
+__declspec(dllexport) void OGLWindowMsgPumpJDirect(void)
+ {
+ MSG msg;
+
+ while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
+ {
+ TranslateMessage(&msg);
+ DispatchMessage(&msg);
+ }
+ } /* OGLWindowMsgPumpJDirect() */
+
+__declspec(dllexport) void moveOGLWindowNativeJDirect(int _hdc, int x, int y, int width, int height)
+ {
+ HWND hwnd, hwndParent;
+ HDC hdc = (HDC)_hdc;
+ RECT rect;
+ int parentx = 0, parenty = 0;
+ int insetsleft = 0, insetstop = 0;
+
+ if (hdc != NULL)
+ {
+ if ((hwnd = WindowFromDC(hdc)) != NULL)
+ {
+ if ((hwndParent = GetParent(hwnd)) != NULL)
+ {
+ GetWindowRect(hwndParent,&rect);
+ parentx = rect.left;
+ parenty = rect.top;
+ }
+ else
+ parentx = parenty = 0;
+ MoveWindow(hwnd,x-parentx,y-parenty,width,height,TRUE);
+ GetWindowRect(hwnd,&rect);
+ insetsleft = rect.left-x;
+ insetstop = rect.top-y;
+ if ( (insetsleft) || (insetstop) )
+ MoveWindow(hwnd,x-(parentx+insetsleft),y-(parenty+insetstop),width,height,TRUE);
+ }
+ }
+ } /* moveOGLWindowNativeJDirect() */
+
+__declspec(dllexport) int createOGLWindowNativeJDirect(int hwndParent, int x, int y, int width, int height)
+ {
+ HWND hwnd;
+ HDC hdc;
+
+ if ((hwnd = CreateWindow
+ (CLASS_NAME,
+ WINDOW_NAME,
+ WS_CHILD | WS_VISIBLE | WS_DISABLED,
+ x,
+ y,
+ width,
+ height,
+ (HWND)hwndParent,
+ NULL,
+ NULL,
+ NULL)) == NULL)
+ {
+ fprintf(stderr,"createOGLWindowNativeJDirect(): CreateWindow failed!\n");
+ fprintf(stderr,"GetLastError() returns: %d\n",(int)GetLastError());
+ return(0);
+ }
+ hdc = GetDC(hwnd);
+ moveOGLWindowNativeJDirect((int)hdc, x, y, width, height);
+ return (int)hdc;
+ } /* createOGLWindowNativeJDirect() */
+
+__declspec(dllexport) void destroyOGLWindowNativeJDirect(int _hdc)
+ {
+ HWND hwnd;
+ HDC hdc = (HDC)_hdc;
+
+ if (hdc != NULL)
+ {
+ if ((hwnd = WindowFromDC(hdc)) != NULL)
+ {
+ ReleaseDC(hwnd,hdc);
+ DestroyWindow(hwnd);
+ }
+ }
+ } /* destroyOGLWindowNativeJDirect() */
+
+
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