From 48f6568ebffdd557651460fb5f3f7f4abbca2440 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Sun, 12 Dec 2010 07:51:06 +0100
Subject: Windows RegisterClass: Use new RegisteredClassFactory (window class),
 Misc.

This solves the issue when an applet is started/stop and started again,
or another applet runs in the same JVM.
Also soves the issue for multiple JVMs.

RegisteredClassFactory can be instanced to manage one shared window class,
currently in use for GDI's dummy window and NEWT.
A class base name and a window proc handle must be passed in the factory cstr.

Before registering, the class is tested if already exists,
eg another applet in the same JVM.
If registration fails, the class name will iterate until successful or MAX_INT reached,
eg if multiple JVMs are running.

Added NativeWindow Common Native Code.
---
 src/nativewindow/native/NativewindowCommon.c | 57 ++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/nativewindow/native/NativewindowCommon.c

(limited to 'src/nativewindow/native/NativewindowCommon.c')

diff --git a/src/nativewindow/native/NativewindowCommon.c b/src/nativewindow/native/NativewindowCommon.c
new file mode 100644
index 000000000..e357045d6
--- /dev/null
+++ b/src/nativewindow/native/NativewindowCommon.c
@@ -0,0 +1,57 @@
+
+#include "NativewindowCommon.h"
+
+static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
+static jclass    runtimeExceptionClz=NULL;
+
+void NativewindowCommon_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);
+}
+
+void NativewindowCommon_throwNewRuntimeException(JNIEnv *env, const char* msg, ...)
+{
+    char buffer[512];
+    va_list ap;
+
+    va_start(ap, msg);
+    vsnprintf(buffer, sizeof(buffer), msg, ap);
+    va_end(ap);
+
+    (*env)->ThrowNew(env, runtimeExceptionClz, buffer);
+}
+
+int NativewindowCommon_init(JNIEnv *env) {
+    if(NULL==runtimeExceptionClz) {
+        jclass c = (*env)->FindClass(env, ClazzNameRuntimeException);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "Nativewindow: can't find %s", ClazzNameRuntimeException);
+        }
+        runtimeExceptionClz = (jclass)(*env)->NewGlobalRef(env, c);
+        (*env)->DeleteLocalRef(env, c);
+        if(NULL==runtimeExceptionClz) {
+            NativewindowCommon_FatalError(env, "Nativewindow: can't use %s", ClazzNameRuntimeException);
+        }
+        return 1;
+    }
+    return 0;
+}
+
+jchar* NativewindowCommon_GetNullTerminatedStringChars(JNIEnv* env, jstring str)
+{
+    jchar* strChars = NULL;
+    strChars = calloc((*env)->GetStringLength(env, str) + 1, sizeof(jchar));
+    if (strChars != NULL) {
+        (*env)->GetStringRegion(env, str, 0, (*env)->GetStringLength(env, str), strChars);
+    }
+    return strChars;
+}
+
-- 
cgit v1.2.3