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#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_GDIUtil.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.GDIUtil
* 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_GDIUtil_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.GDIUtil
* 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_GDIUtil_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.GDIUtil
* 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_GDIUtil_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_GDIUtil
* Method: initIDs0
* Signature: ()Z
*/
JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_windows_GDIUtil_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_GDIUtil: 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_GDIUtil: can't use %s", ClazzNamePoint);
}
pointCstr = (*env)->GetMethodID(env, pointClz, ClazzAnyCstrName, ClazzNamePointCstrSignature);
if(NULL==pointCstr) {
NativewindowCommon_FatalError(env, "FatalError jogamp_nativewindow_windows_GDIUtil: 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_GDIUtil
* Method: getDummyWndProc0
* Signature: ()J
*/
JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_windows_GDIUtil_getDummyWndProc0
(JNIEnv *env, jclass clazz)
{
return (jlong) (intptr_t) DummyWndProc;
}
/*
* Class: jogamp_nativewindow_windows_GDIUtil
* Method: GetRelativeLocation0
* Signature: (JJII)Ljavax/media/nativewindow/util/Point;
*/
JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_windows_GDIUtil_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);
}
/*
* Class: jogamp_nativewindow_windows_GDIUtil
* Method: IsChild0
*/
JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_windows_GDIUtil_IsChild0
(JNIEnv *env, jclass unused, jlong jwin)
{
HWND hwnd = (HWND) (intptr_t) jwin;
LONG style = GetWindowLong(hwnd, GWL_STYLE);
BOOL bIsChild = 0 != (style & WS_CHILD) ;
return bIsChild ? JNI_TRUE : JNI_FALSE;
}
/*
* Class: jogamp_nativewindow_windows_GDIUtil
* Method: IsUndecorated0
*/
JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_windows_GDIUtil_IsUndecorated0
(JNIEnv *env, jclass unused, jlong jwin)
{
HWND hwnd = (HWND) (intptr_t) jwin;
LONG style = GetWindowLong(hwnd, GWL_STYLE);
BOOL bIsUndecorated = 0 != (style & (WS_CHILD|WS_POPUP)) ;
return bIsUndecorated ? JNI_TRUE : JNI_FALSE;
}
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