diff options
Diffstat (limited to 'src/nativewindow')
| -rw-r--r-- | src/nativewindow/native/windows/GDImisc.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/nativewindow/native/windows/GDImisc.c b/src/nativewindow/native/windows/GDImisc.c new file mode 100644 index 000000000..3c1001115 --- /dev/null +++ b/src/nativewindow/native/windows/GDImisc.c @@ -0,0 +1,152 @@ +#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> + +#ifdef _WIN32 + #ifdef _MSC_VER + /* This typedef is apparently needed for Microsoft compilers before VC8, + and on Windows CE */ + #if (_MSC_VER < 1400) || defined(UNDER_CE) + #ifdef _WIN64 + typedef long long intptr_t; + #else + typedef int intptr_t; + #endif + #endif + #else + #include <inttypes.h> + #endif +#else + #include <inttypes.h> +#endif + +#include <stdio.h> + +#include "com_jogamp_nativewindow_impl_windows_GDI.h" + +// #define VERBOSE_ON 1 + +#ifdef VERBOSE_ON + #define DBG_PRINT(args...) fprintf(stderr, args); +#else + #define DBG_PRINT(args...) +#endif + +static void _FatalError(JNIEnv *env, const char* msg, ...) +{ + char buffer[512]; + va_list ap; + + va_start(ap, msg); + vsnprintf(buffer, sizeof(buffer), msg, ap); + va_end(ap); + + fprintf(stderr, "%s\n", buffer); + (*env)->FatalError(env, buffer); +} + +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; + +#define NATIVEWINDOW_DUMMY_WINDOW_NAME "__nativewindow_dummy_window" +static ATOM nativewindowClass = 0; + +LRESULT CALLBACK DummyWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { + return DefWindowProc(hWnd,uMsg,wParam,lParam); +} + +HWND CreateDummyWindow(HINSTANCE hInstance, int x, int y, int width, int height ) { + DWORD dwExStyle; + DWORD dwStyle; + HWND hWnd; + + dwExStyle = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE; + dwStyle = WS_OVERLAPPEDWINDOW; + if( !(hWnd=CreateWindowEx( dwExStyle, + NATIVEWINDOW_DUMMY_WINDOW_NAME, + NATIVEWINDOW_DUMMY_WINDOW_NAME, + dwStyle | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, + x, y, width, height, + NULL, NULL, hInstance, NULL ) ) ) { + return( 0 ); + } + return( hWnd ); +} + +/* + * Class: com_jogamp_nativewindow_impl_windows_GDI + * Method: initIDs0 + * Signature: ()Z + */ +JNIEXPORT jlong JNICALL Java_com_jogamp_nativewindow_impl_windows_GDI_initIDs0 + (JNIEnv *env, jclass clazz) +{ + if(NULL==pointClz) { + jclass c = (*env)->FindClass(env, ClazzNamePoint); + if(NULL==c) { + _FatalError(env, "FatalError com_jogamp_nativewindow_impl_windows_GDI: can't find %s", ClazzNamePoint); + } + pointClz = (jclass)(*env)->NewGlobalRef(env, c); + (*env)->DeleteLocalRef(env, c); + if(NULL==pointClz) { + _FatalError(env, "FatalError com_jogamp_nativewindow_impl_windows_GDI: can't use %s", ClazzNamePoint); + } + pointCstr = (*env)->GetMethodID(env, pointClz, ClazzAnyCstrName, ClazzNamePointCstrSignature); + if(NULL==pointCstr) { + _FatalError(env, "FatalError com_jogamp_nativewindow_impl_windows_GDI: can't fetch %s.%s %s", + ClazzNamePoint, ClazzAnyCstrName, ClazzNamePointCstrSignature); + } + } + HINSTANCE hInstance = GetModuleHandle(NULL); + if( !nativewindowClass ) { + WNDCLASS wc; + ZeroMemory( &wc, sizeof( wc ) ); + wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; + wc.lpfnWndProc = (WNDPROC) DummyWndProc; + wc.cbClsExtra = 0; + wc.cbWndExtra = 0; + wc.hInstance = hInstance; + wc.hIcon = NULL; + wc.hCursor = NULL; + wc.hbrBackground = NULL; + wc.lpszMenuName = NULL; + wc.lpszClassName = NATIVEWINDOW_DUMMY_WINDOW_NAME; + if( !(nativewindowClass = RegisterClass( &wc )) ) { + _FatalError(env, "FatalError com_jogamp_nativewindow_impl_windows_GDI: RegisterClass Failed: %d", GetLastError() ); + } + } + return (jlong) hInstance; +} + +/* + * Class: com_jogamp_nativewindow_impl_windows_GDI + * Method: GetRelativeLocation0 + * Signature: (JJII)Ljavax/media/nativewindow/util/Point; + */ +JNIEXPORT jobject JNICALL Java_com_jogamp_nativewindow_impl_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); +} + |