| 1 | /* Copyright (C) 1999, 2000 Free Software Foundation
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| 2 |
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| 3 | This file is part of libgcj.
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| 4 |
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| 5 | This software is copyrighted work licensed under the terms of the
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| 6 | Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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| 7 | details. */
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| 8 |
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| 9 | #include <X11/Xproto.h>
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| 10 | #include <X11/Xlib.h>
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| 11 | #include <stdio.h>
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| 12 |
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| 13 | #include <java/lang/System.h>
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| 14 | #include <java/lang/RuntimeException.h>
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| 15 | #include <java/io/PrintStream.h>
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| 16 | #include <gcj/cni.h>
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| 17 |
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| 18 | #include <gnu/gcj/xlib/Display.h>
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| 19 | #include <gnu/gcj/xlib/XConnectException.h>
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| 20 | #include <gnu/gcj/xlib/XException.h>
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| 21 |
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| 22 | void gnu::gcj::xlib::Display::init()
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| 23 | {
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| 24 | ::Display* openedDisplay = XOpenDisplay(0); // default display
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| 25 |
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| 26 | if (openedDisplay == 0) {
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| 27 | jstring msg = JvNewStringLatin1("Unable to open display");
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| 28 | throw new gnu::gcj::xlib::XConnectException(msg);
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| 29 | }
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| 30 |
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| 31 | display = reinterpret_cast<gnu::gcj::RawData*>(openedDisplay);
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| 32 | }
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| 33 |
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| 34 | void gnu::gcj::xlib::Display::finalize()
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| 35 | {
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| 36 | if (display == 0) return;
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| 37 | ::Display* dpy = (::Display*) display;
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| 38 | XCloseDisplay(dpy);
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| 39 | }
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| 40 |
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| 41 | jint gnu::gcj::xlib::Display::getDefaultScreenNumber()
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| 42 | {
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| 43 | ::Display* dpy = (::Display*) display;
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| 44 | return DefaultScreen(dpy);
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| 45 | }
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| 46 |
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| 47 | jint gnu::gcj::xlib::Display::getDefaultRootWindowXID()
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| 48 | {
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| 49 | ::Display* dpy = (::Display*) display;
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| 50 | return DefaultRootWindow(dpy);
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| 51 | }
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| 52 |
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| 53 | jint gnu::gcj::xlib::Display::internAtom(jstring name)
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| 54 | {
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| 55 | ::Display* dpy = (::Display*) display;
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| 56 | int len = JvGetStringUTFLength(name);
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| 57 | char cName[len+1];
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| 58 | JvGetStringUTFRegion(name, 0, name->length(), cName);
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| 59 | cName[len] = '\0';
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| 60 | bool onlyIfExists = false;
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| 61 | return XInternAtom(dpy, cName, onlyIfExists);
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| 62 | }
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| 63 |
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| 64 | jstring gnu::gcj::xlib::Display::getAtomName(jint atom)
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| 65 | {
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| 66 | ::Display* dpy = (::Display*) display;
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| 67 | char* cName = XGetAtomName(dpy, atom);
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| 68 | jstring name = JvNewStringLatin1(cName);
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| 69 | XFree(cName);
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| 70 | return name;
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| 71 | }
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| 72 |
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| 73 | static int handleXError(Display* dpy, XErrorEvent* xee)
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| 74 | {
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| 75 | const int ERROR_TEXT_LENGTH = 256;
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| 76 | char errorText[ERROR_TEXT_LENGTH];
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| 77 | XGetErrorText(dpy, xee->error_code, errorText, ERROR_TEXT_LENGTH);
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| 78 | int requestCode = xee->request_code;
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| 79 |
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| 80 | if (requestCode == X_GetImage)
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| 81 | {
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| 82 | /* The current implementation of Drawable.copyIntoXImage()
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| 83 | will generate harmless X_GetImage errors if the initially
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| 84 | requested area is not completly within the drawable. Until
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| 85 | we find a better solution, simply ignore these errors. */
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| 86 | return 0;
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| 87 | }
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| 88 |
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| 89 | java::lang::System::err->print(JvNewStringLatin1("X error: "));
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| 90 | java::lang::System::err->print(JvNewStringLatin1(errorText));
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| 91 | java::lang::System::err->print(JvNewStringLatin1(", serial="));
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| 92 | java::lang::System::err->print((jlong) xee->serial);
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| 93 | java::lang::System::err->print(JvNewStringLatin1(", requestCode="));
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| 94 | java::lang::System::err->print((jint) requestCode);
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| 95 |
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| 96 | if (requestCode < 128)
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| 97 | {
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| 98 | char number[8];
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| 99 | snprintf(number, 8, "%d", requestCode);
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| 100 | number[7] = '\0';
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| 101 |
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| 102 | XGetErrorDatabaseText(dpy, "XRequest", number,
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| 103 | "", errorText, ERROR_TEXT_LENGTH);
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| 104 | java::lang::System::err->print(JvNewStringLatin1(" ("));
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| 105 | java::lang::System::err->print(JvNewStringLatin1(errorText));
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| 106 | java::lang::System::err->print(JvNewStringLatin1(")"));
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| 107 | }
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| 108 |
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| 109 | java::lang::System::err->print(JvNewStringLatin1(", minorCode="));
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| 110 | java::lang::System::err->print((jint) xee->minor_code);
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| 111 | java::lang::System::err->print(JvNewStringLatin1(", XID="));
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| 112 | java::lang::System::err->println((jlong) xee->resourceid);
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| 113 |
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| 114 | return 0;
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| 115 | }
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| 116 |
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| 117 | void gnu::gcj::xlib::Display::staticInit()
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| 118 | {
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| 119 | if (XInitThreads() == 0)
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| 120 | {
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| 121 | char msg[] = "threads is not supported on this platform";
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| 122 | throw new java::lang::RuntimeException(JvNewStringLatin1(msg));
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| 123 | }
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| 124 |
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| 125 | XSetErrorHandler(&handleXError);
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| 126 | }
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| 127 |
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| 128 | void gnu::gcj::xlib::Display::flush()
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| 129 | {
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| 130 | ::Display* dpy = (::Display*) display;
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| 131 | XFlush(dpy);
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| 132 | }
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