1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #include <windows.h> 25 26 #include "jawt.h" 27 #include "jawt_md.h" 28 #include "NativeView.h" 29 30 #define MY_ASSERT(X,S) if (!X) { fprintf(stderr,"%s\n",S); return 0L;} 31 32 #define SYSTEM_WIN32 1 33 #define SYSTEM_WIN16 2 34 #define SYSTEM_JAVA 3 35 #define SYSTEM_OS2 4 36 #define SYSTEM_MAC 5 37 #define SYSTEM_XWINDOW 6 38 39 // property name to register own window procedure on hwnd 40 #define OLD_PROC_KEY "oldwindowproc" 41 // signature of this window procedure 42 static LRESULT APIENTRY NativeViewWndProc( HWND , UINT , WPARAM , LPARAM ); 43 44 /***************************************************************************** 45 * 46 * Class : NativeView 47 * Method : getNativeWindowSystemType 48 * Signature : ()I 49 * Description: returns an identifier for the current operating system 50 */ 51 JNIEXPORT jint JNICALL Java_NativeView_getNativeWindowSystemType 52 (JNIEnv * env, jobject obj_this) 53 { 54 return (SYSTEM_WIN32); 55 } 56 57 /***************************************************************************** 58 * 59 * Class : NativeView 60 * Method : getNativeWindow 61 * Signature : ()J 62 * Description: returns the native systemw window handle of this object 63 */ 64 JNIEXPORT jlong JNICALL Java_NativeView_getNativeWindow 65 (JNIEnv * env, jobject obj_this) 66 { 67 jboolean result ; 68 jint lock ; 69 JAWT awt ; 70 JAWT_DrawingSurface* ds ; 71 JAWT_DrawingSurfaceInfo* dsi ; 72 JAWT_Win32DrawingSurfaceInfo* dsi_win ; 73 HDC hdc ; 74 HWND hWnd ; 75 LONG hFuncPtr; 76 77 /* Get the AWT */ 78 awt.version = JAWT_VERSION_1_3; 79 result = JAWT_GetAWT(env, &awt); 80 MY_ASSERT(result!=JNI_FALSE,"wrong jawt version"); 81 82 /* Get the drawing surface */ 83 if ((ds = awt.GetDrawingSurface(env, obj_this)) == NULL) 84 return 0L; 85 86 /* Lock the drawing surface */ 87 lock = ds->Lock(ds); 88 MY_ASSERT((lock & JAWT_LOCK_ERROR)==0,"can't lock the drawing surface"); 89 90 /* Get the drawing surface info */ 91 dsi = ds->GetDrawingSurfaceInfo(ds); 92 93 /* Get the platform-specific drawing info */ 94 dsi_win = (JAWT_Win32DrawingSurfaceInfo*)dsi->platformInfo; 95 hdc = dsi_win->hdc; 96 hWnd = dsi_win->hwnd; 97 98 /* Free the drawing surface info */ 99 ds->FreeDrawingSurfaceInfo(dsi); 100 /* Unlock the drawing surface */ 101 ds->Unlock(ds); 102 /* Free the drawing surface */ 103 awt.FreeDrawingSurface(ds); 104 105 /* Register own window procedure 106 Do it one times only! Otherwhise 107 multiple instances will be registered 108 and calls on such construct produce 109 a stack overflow. 110 */ 111 if (GetProp( hWnd, OLD_PROC_KEY )==0) 112 { 113 hFuncPtr = SetWindowLong( hWnd, GWL_WNDPROC, (DWORD)NativeViewWndProc ); 114 SetProp( hWnd, OLD_PROC_KEY, (HANDLE)hFuncPtr ); 115 } 116 117 return ((jlong)hWnd); 118 } 119 120 /***************************************************************************** 121 * 122 * Class : - 123 * Method : NativeViewWndProc 124 * Signature : - 125 * Description: registered window handler to intercept window messages between 126 * java and office process 127 */ 128 static LRESULT APIENTRY NativeViewWndProc( 129 HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) 130 { 131 HANDLE hFuncPtr; 132 133 /* resize new created child window to fill out the java window complete */ 134 if (uMsg==WM_PARENTNOTIFY) 135 { 136 if (wParam == WM_CREATE) 137 { 138 RECT rect; 139 HWND hChild = (HWND) lParam; 140 141 GetClientRect(hWnd, &rect); 142 143 SetWindowPos(hChild, 144 NULL, 145 rect.left, 146 rect.top, 147 rect.right - rect.left, 148 rect.bottom - rect.top, 149 SWP_NOZORDER); 150 } 151 } 152 /* handle normal resize events */ 153 else if(uMsg==WM_SIZE) 154 { 155 WORD newHeight = HIWORD(lParam); 156 WORD newWidth = LOWORD(lParam); 157 HWND hChild = GetWindow(hWnd, GW_CHILD); 158 159 if (hChild != NULL) 160 SetWindowPos(hChild, NULL, 0, 0, newWidth, newHeight, SWP_NOZORDER); 161 } 162 163 /* forward request to original handler which is intercepted by this window procedure */ 164 hFuncPtr = GetProp(hWnd, OLD_PROC_KEY); 165 MY_ASSERT(hFuncPtr,"lost original window proc handler"); 166 return CallWindowProc( hFuncPtr, hWnd, uMsg, wParam, lParam); 167 } 168