#include <jni.h> #include <stdlib.h> #include <assert.h> #define WIN32_LEAN_AND_MEAN #include <windows.h> #undef WIN32_LEAN_AND_MEAN #include <wingdi.h> #include <stddef.h> #include <gluegen_stdint.h> #include <stdio.h> #include "NativewindowCommon.h" #include "jogamp_nativewindow_windows_GDI.h" // #define VERBOSE_ON 1 #ifdef VERBOSE_ON #define DBG_PRINT(args...) fprintf(stderr, args); #else #define DBG_PRINT(args...) #endif static const char * const ClazzNamePoint = "javax/media/nativewindow/util/Point"; static const char * const ClazzAnyCstrName = "<init>"; static const char * const ClazzNamePointCstrSignature = "(II)V"; static jclass pointClz = NULL; static jmethodID pointCstr = NULL; HINSTANCE GetApplicationHandle() { return GetModuleHandle(NULL); } /* Java->C glue code: * Java package: jogamp.nativewindow.windows.GDI * Java method: boolean CreateWindowClass(long hInstance, java.lang.String clazzName, long wndProc) * C function: BOOL CreateWindowClass(HANDLE hInstance, LPCSTR clazzName, HANDLE wndProc); */ JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_windows_GDI_CreateWindowClass (JNIEnv *env, jclass _unused, jlong jHInstance, jstring jClazzName, jlong wndProc) { HINSTANCE hInstance = (HINSTANCE) (intptr_t) jHInstance; const TCHAR* clazzName = NULL; WNDCLASS wc; jboolean res; #ifdef UNICODE clazzName = NewtCommon_GetNullTerminatedStringChars(env, jClazzName); #else clazzName = (*env)->GetStringUTFChars(env, jClazzName, NULL); #endif ZeroMemory( &wc, sizeof( wc ) ); if( GetClassInfo( hInstance, clazzName, &wc ) ) { // registered already res = JNI_TRUE; } else { // register now ZeroMemory( &wc, sizeof( wc ) ); wc.style = CS_HREDRAW | CS_VREDRAW ; wc.lpfnWndProc = (WNDPROC) (intptr_t) wndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = NULL; wc.hCursor = LoadCursor( NULL, IDC_ARROW); wc.hbrBackground = NULL; // no background paint - GetStockObject(BLACK_BRUSH); wc.lpszMenuName = NULL; wc.lpszClassName = clazzName; res = ( 0 != RegisterClass( &wc ) ) ? JNI_TRUE : JNI_FALSE ; } #ifdef UNICODE free((void*) clazzName); #else (*env)->ReleaseStringUTFChars(env, jClazzName, clazzName); #endif return res; } /* Java->C glue code: * Java package: jogamp.nativewindow.windows.GDI * Java method: boolean DestroyWindowClass(long hInstance, java.lang.String className) * C function: BOOL DestroyWindowClass(HANDLE hInstance, LPCSTR className); */ JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_windows_GDI_DestroyWindowClass (JNIEnv *env, jclass _unused, jlong jHInstance, jstring jClazzName) { HINSTANCE hInstance = (HINSTANCE) (intptr_t) jHInstance; const TCHAR* clazzName = NULL; jboolean res; #ifdef UNICODE clazzName = NewtCommon_GetNullTerminatedStringChars(env, jClazzName); #else clazzName = (*env)->GetStringUTFChars(env, jClazzName, NULL); #endif res = ( 0 != UnregisterClass( clazzName, hInstance ) ) ? JNI_TRUE : JNI_FALSE ; #ifdef UNICODE free((void*) clazzName); #else (*env)->ReleaseStringUTFChars(env, jClazzName, clazzName); #endif return res; } /* Java->C glue code: * Java package: jogamp.nativewindow.windows.GDI * Java method: long CreateDummyWindow0(long hInstance, java.lang.String className, java.lang.String windowName, int x, int y, int width, int height) * C function: HANDLE CreateDummyWindow0(HANDLE hInstance, LPCSTR className, LPCSTR windowName, int x, int y, int width, int height); */ JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_windows_GDI_CreateDummyWindow0 (JNIEnv *env, jclass _unused, jlong jHInstance, jstring jWndClassName, jstring jWndName, jint x, jint y, jint width, jint height) { HINSTANCE hInstance = (HINSTANCE) (intptr_t) jHInstance; const TCHAR* wndClassName = NULL; const TCHAR* wndName = NULL; DWORD dwExStyle; DWORD dwStyle; HWND hWnd; #ifdef UNICODE wndClassName = NewtCommon_GetNullTerminatedStringChars(env, jWndClassName); wndName = NewtCommon_GetNullTerminatedStringChars(env, jWndName); #else wndClassName = (*env)->GetStringUTFChars(env, jWndClassName, NULL); wndName = (*env)->GetStringUTFChars(env, jWndName, NULL); #endif dwExStyle = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE; dwStyle = WS_OVERLAPPEDWINDOW; hWnd = CreateWindowEx( dwExStyle, wndClassName, wndName, dwStyle | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, x, y, width, height, NULL, NULL, hInstance, NULL ); #ifdef UNICODE free((void*) wndClassName); free((void*) wndName); #else (*env)->ReleaseStringUTFChars(env, jWndClassName, wndClassName); (*env)->ReleaseStringUTFChars(env, jWndName, wndName); #endif return (jlong) (intptr_t) hWnd; } /* * Class: jogamp_nativewindow_windows_GDI * Method: initIDs0 * Signature: ()Z */ JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_windows_GDI_initIDs0 (JNIEnv *env, jclass clazz) { if(NativewindowCommon_init(env)) { jclass c = (*env)->FindClass(env, ClazzNamePoint); if(NULL==c) { NativewindowCommon_FatalError(env, "FatalError jogamp_nativewindow_windows_GDI: can't find %s", ClazzNamePoint); } pointClz = (jclass)(*env)->NewGlobalRef(env, c); (*env)->DeleteLocalRef(env, c); if(NULL==pointClz) { NativewindowCommon_FatalError(env, "FatalError jogamp_nativewindow_windows_GDI: can't use %s", ClazzNamePoint); } pointCstr = (*env)->GetMethodID(env, pointClz, ClazzAnyCstrName, ClazzNamePointCstrSignature); if(NULL==pointCstr) { NativewindowCommon_FatalError(env, "FatalError jogamp_nativewindow_windows_GDI: can't fetch %s.%s %s", ClazzNamePoint, ClazzAnyCstrName, ClazzNamePointCstrSignature); } } return JNI_TRUE; } LRESULT CALLBACK DummyWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { return DefWindowProc(hWnd,uMsg,wParam,lParam); } /* * Class: jogamp_nativewindow_windows_GDI * Method: getDummyWndProc0 * Signature: ()J */ JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_windows_GDI_getDummyWndProc0 (JNIEnv *env, jclass clazz) { return (jlong) (intptr_t) DummyWndProc; } /* * Class: jogamp_nativewindow_windows_GDI * Method: GetRelativeLocation0 * Signature: (JJII)Ljavax/media/nativewindow/util/Point; */ JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_windows_GDI_GetRelativeLocation0 (JNIEnv *env, jclass unused, jlong jsrc_win, jlong jdest_win, jint src_x, jint src_y) { HWND src_win = (HWND) (intptr_t) jsrc_win; HWND dest_win = (HWND) (intptr_t) jdest_win; POINT dest = { src_x, src_y } ; int res; res = MapWindowPoints(src_win, dest_win, &dest, 1); DBG_PRINT("*** WindowsWindow: getRelativeLocation0: %p %d/%d -> %p %d/%d - ok: %d\n", (void*)src_win, src_x, src_y, (void*)dest_win, (int)dest.x, (int)dest.y, res); return (*env)->NewObject(env, pointClz, pointCstr, (jint)dest.x, (jint)dest.y); }