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diff --git a/vcl/unx/generic/app/i18n_ic.cxx b/vcl/unx/generic/app/i18n_ic.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <X11/Xlib.h>
+
+#include <unx/i18n_ic.hxx>
+#include <unx/i18n_im.hxx>
+
+#include <unx/salframe.h>
+#include <unx/saldisp.hxx>
+
+#include <sal/log.hxx>
+
+using namespace vcl;
+
+static void sendEmptyCommit( SalFrame* pFrame )
+{
+ vcl::DeletionListener aDel( pFrame );
+
+ SalExtTextInputEvent aEmptyEv;
+ aEmptyEv.mpTextAttr = nullptr;
+ aEmptyEv.maText.clear();
+ aEmptyEv.mnCursorPos = 0;
+ aEmptyEv.mnCursorFlags = 0;
+ pFrame->CallCallback( SalEvent::ExtTextInput, static_cast<void*>(&aEmptyEv) );
+ if( ! aDel.isDeleted() )
+ pFrame->CallCallback( SalEvent::EndExtTextInput, nullptr );
+}
+
+// Constructor / Destructor, the InputContext is bound to the SalFrame, as it
+// needs the shell window as a focus window
+
+SalI18N_InputContext::~SalI18N_InputContext()
+{
+ if ( maContext != nullptr )
+ XDestroyIC( maContext );
+ if ( mpAttributes != nullptr )
+ XFree( mpAttributes );
+ if ( mpStatusAttributes != nullptr )
+ XFree( mpStatusAttributes );
+ if ( mpPreeditAttributes != nullptr )
+ XFree( mpPreeditAttributes );
+
+ if (maClientData.aText.pUnicodeBuffer != nullptr)
+ free(maClientData.aText.pUnicodeBuffer);
+ if (maClientData.aText.pCharStyle != nullptr)
+ free(maClientData.aText.pCharStyle);
+}
+
+// convenience routine to add items to a XVaNestedList
+
+static XVaNestedList
+XVaAddToNestedList( XVaNestedList a_srclist, char* name, XPointer value )
+{
+ XVaNestedList a_dstlist;
+
+ // if ( value == NULL )
+ // return a_srclist;
+
+ if ( a_srclist == nullptr )
+ {
+ a_dstlist = XVaCreateNestedList(
+ 0,
+ name, value,
+ nullptr );
+ }
+ else
+ {
+ a_dstlist = XVaCreateNestedList(
+ 0,
+ XNVaNestedList, a_srclist,
+ name, value,
+ nullptr );
+ }
+
+ return a_dstlist != nullptr ? a_dstlist : a_srclist ;
+}
+
+// convenience routine to create a fontset
+
+static XFontSet
+get_font_set( Display *p_display )
+{
+ static XFontSet p_font_set = nullptr;
+
+ if (p_font_set == nullptr)
+ {
+ char **pp_missing_list;
+ int n_missing_count;
+ char *p_default_string;
+
+ p_font_set = XCreateFontSet(p_display, "-*",
+ &pp_missing_list, &n_missing_count, &p_default_string);
+ }
+
+ return p_font_set;
+}
+
+static const XIMStyle g_nSupportedStatusStyle(
+ XIMStatusCallbacks |
+ XIMStatusNothing |
+ XIMStatusNone
+ );
+
+// Constructor for an InputContext (IC)
+
+SalI18N_InputContext::SalI18N_InputContext ( SalFrame *pFrame ) :
+ mbUseable( True ),
+ maContext( nullptr ),
+ mnSupportedPreeditStyle(
+ XIMPreeditCallbacks |
+ XIMPreeditNothing |
+ XIMPreeditNone
+ ),
+ mnStatusStyle( 0 ),
+ mnPreeditStyle( 0 ),
+ mpAttributes( nullptr ),
+ mpStatusAttributes( nullptr ),
+ mpPreeditAttributes( nullptr )
+{
+#ifdef __sun
+ static const char* pIIIMPEnable = getenv( "SAL_DISABLE_OWN_IM_STATUS" );
+ if( pIIIMPEnable && *pIIIMPEnable )
+ mnSupportedStatusStyle &= ~XIMStatusCallbacks;
+#endif
+
+ memset(&maPreeditStartCallback, 0, sizeof(maPreeditStartCallback));
+ memset(&maPreeditDoneCallback, 0, sizeof(maPreeditDoneCallback));
+ memset(&maPreeditDrawCallback, 0, sizeof(maPreeditDrawCallback));
+ memset(&maPreeditCaretCallback, 0, sizeof(maPreeditCaretCallback));
+ memset(&maCommitStringCallback, 0, sizeof(maCommitStringCallback));
+ memset(&maSwitchIMCallback, 0, sizeof(maSwitchIMCallback));
+ memset(&maDestroyCallback, 0, sizeof(maDestroyCallback));
+
+ maClientData.aText.pUnicodeBuffer = nullptr;
+ maClientData.aText.pCharStyle = nullptr;
+ maClientData.aInputEv.mpTextAttr = nullptr;
+ maClientData.aInputEv.mnCursorPos = 0;
+ maClientData.aInputEv.mnCursorFlags = 0;
+
+ SalI18N_InputMethod *pInputMethod;
+ pInputMethod = vcl_sal::getSalDisplay(GetGenericUnixSalData())->GetInputMethod();
+
+ mnSupportedPreeditStyle = XIMPreeditCallbacks | XIMPreeditPosition
+ | XIMPreeditNothing | XIMPreeditNone;
+ if (pInputMethod->UseMethod()
+ && SupportInputMethodStyle( pInputMethod->GetSupportedStyles() ) )
+ {
+ const SystemEnvData* pEnv = pFrame->GetSystemData();
+ ::Window aClientWindow = pEnv->aShellWindow;
+ ::Window aFocusWindow = pEnv->aWindow;
+
+ // for status callbacks and commit string callbacks
+#define PREEDIT_BUFSZ 16
+ maClientData.eState = PreeditStatus::StartPending;
+ maClientData.pFrame = pFrame;
+ maClientData.aText.pUnicodeBuffer =
+ static_cast<sal_Unicode*>(malloc(PREEDIT_BUFSZ * sizeof(sal_Unicode)));
+ maClientData.aText.pCharStyle =
+ static_cast<XIMFeedback*>(malloc(PREEDIT_BUFSZ * sizeof(XIMFeedback)));
+ maClientData.aText.nSize = PREEDIT_BUFSZ;
+ maClientData.aText.nLength = 0;
+
+ // Status attributes
+
+ switch ( mnStatusStyle )
+ {
+ case XIMStatusCallbacks:
+ {
+ static XIMCallback aStatusStartCallback;
+ static XIMCallback aStatusDoneCallback;
+ static XIMCallback aStatusDrawCallback;
+
+ aStatusStartCallback.callback = reinterpret_cast<XIMProc>(StatusStartCallback);
+ aStatusStartCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+ aStatusDoneCallback.callback = reinterpret_cast<XIMProc>(StatusDoneCallback);
+ aStatusDoneCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+ aStatusDrawCallback.callback = reinterpret_cast<XIMProc>(StatusDrawCallback);
+ aStatusDrawCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+
+ mpStatusAttributes = XVaCreateNestedList (
+ 0,
+ XNStatusStartCallback, &aStatusStartCallback,
+ XNStatusDoneCallback, &aStatusDoneCallback,
+ XNStatusDrawCallback, &aStatusDrawCallback,
+ nullptr );
+
+ break;
+ }
+
+ case XIMStatusArea:
+ /* not supported */
+ break;
+
+ case XIMStatusNone:
+ case XIMStatusNothing:
+ default:
+ /* no arguments needed */
+ break;
+ }
+
+ // set preedit attributes
+
+ switch ( mnPreeditStyle )
+ {
+ case XIMPreeditCallbacks:
+
+ maPreeditCaretCallback.callback = reinterpret_cast<XIMProc>(PreeditCaretCallback);
+ maPreeditStartCallback.callback = reinterpret_cast<XIMProc>(PreeditStartCallback);
+ maPreeditDoneCallback.callback = reinterpret_cast<XIMProc>(PreeditDoneCallback);
+ maPreeditDrawCallback.callback = reinterpret_cast<XIMProc>(PreeditDrawCallback);
+ maPreeditCaretCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+ maPreeditStartCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+ maPreeditDoneCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+ maPreeditDrawCallback.client_data = reinterpret_cast<XPointer>(&maClientData);
+
+ mpPreeditAttributes = XVaCreateNestedList (
+ 0,
+ XNPreeditStartCallback, &maPreeditStartCallback,
+ XNPreeditDoneCallback, &maPreeditDoneCallback,
+ XNPreeditDrawCallback, &maPreeditDrawCallback,
+ XNPreeditCaretCallback, &maPreeditCaretCallback,
+ nullptr );
+
+ break;
+
+ case XIMPreeditArea:
+ /* not supported */
+ break;
+
+ case XIMPreeditPosition:
+ {
+ // spot location
+ SalExtTextInputPosEvent aPosEvent;
+ pFrame->CallCallback(SalEvent::ExtTextInputPos, static_cast<void*>(&aPosEvent));
+
+ static XPoint aSpot;
+ aSpot.x = aPosEvent.mnX + aPosEvent.mnWidth;
+ aSpot.y = aPosEvent.mnY + aPosEvent.mnHeight;
+
+ // create attributes for preedit position style
+ mpPreeditAttributes = XVaCreateNestedList (
+ 0,
+ XNSpotLocation, &aSpot,
+ nullptr );
+
+ // XCreateIC() fails on Redflag Linux 2.0 if there is no
+ // fontset though the data itself is not evaluated nor is
+ // it required according to the X specs.
+ Display* pDisplay = vcl_sal::getSalDisplay(GetGenericUnixSalData())->GetDisplay();
+ XFontSet pFontSet = get_font_set(pDisplay);
+
+ if (pFontSet != nullptr)
+ {
+ mpPreeditAttributes = XVaAddToNestedList( mpPreeditAttributes,
+ const_cast<char*>(XNFontSet), reinterpret_cast<XPointer>(pFontSet));
+ }
+
+ break;
+ }
+
+ case XIMPreeditNone:
+ case XIMPreeditNothing:
+ default:
+ /* no arguments needed */
+ break;
+ }
+
+ // Create the InputContext by giving it exactly the information it
+ // deserves, because inappropriate attributes
+ // let XCreateIC fail on Solaris (eg. for C locale)
+
+ mpAttributes = XVaCreateNestedList(
+ 0,
+ XNFocusWindow, aFocusWindow,
+ XNClientWindow, aClientWindow,
+ XNInputStyle, mnPreeditStyle | mnStatusStyle,
+ nullptr );
+
+ if ( mnPreeditStyle != XIMPreeditNone )
+ {
+#if defined LINUX || defined FREEBSD || defined NETBSD || defined OPENBSD || defined DRAGONFLY
+ if ( mpPreeditAttributes != nullptr )
+#endif
+ mpAttributes = XVaAddToNestedList( mpAttributes,
+ const_cast<char*>(XNPreeditAttributes), static_cast<XPointer>(mpPreeditAttributes) );
+ }
+ if ( mnStatusStyle != XIMStatusNone )
+ {
+#if defined LINUX || defined FREEBSD || defined NETBSD || defined OPENBSD || defined DRAGONFLY
+ if ( mpStatusAttributes != nullptr )
+#endif
+ mpAttributes = XVaAddToNestedList( mpAttributes,
+ const_cast<char*>(XNStatusAttributes), static_cast<XPointer>(mpStatusAttributes) );
+ }
+ maContext = XCreateIC( pInputMethod->GetMethod(),
+ XNVaNestedList, mpAttributes,
+ nullptr );
+ }
+
+ if ( maContext == nullptr )
+ {
+#if OSL_DEBUG_LEVEL > 1
+ SAL_WARN("vcl.app", "input context creation failed.");
+#endif
+
+ mbUseable = False;
+
+ if ( mpAttributes != nullptr )
+ XFree( mpAttributes );
+ if ( mpStatusAttributes != nullptr )
+ XFree( mpStatusAttributes );
+ if ( mpPreeditAttributes != nullptr )
+ XFree( mpPreeditAttributes );
+ if ( maClientData.aText.pUnicodeBuffer != nullptr )
+ free ( maClientData.aText.pUnicodeBuffer );
+ if ( maClientData.aText.pCharStyle != nullptr )
+ free ( maClientData.aText.pCharStyle );
+
+ mpAttributes = nullptr;
+ mpStatusAttributes = nullptr;
+ mpPreeditAttributes = nullptr;
+ maClientData.aText.pUnicodeBuffer = nullptr;
+ maClientData.aText.pCharStyle = nullptr;
+ }
+
+ if ( maContext != nullptr)
+ {
+ maDestroyCallback.callback = IC_IMDestroyCallback;
+ maDestroyCallback.client_data = reinterpret_cast<XPointer>(this);
+ XSetICValues( maContext,
+ XNDestroyCallback, &maDestroyCallback,
+ nullptr );
+ }
+}
+
+// In Solaris 8 the status window does not unmap if the frame unmapps, so
+// unmap it the hard way
+
+void
+SalI18N_InputContext::Unmap()
+{
+ UnsetICFocus();
+ maClientData.pFrame = nullptr;
+}
+
+void
+SalI18N_InputContext::Map( SalFrame *pFrame )
+{
+ if( mbUseable )
+ {
+ if( pFrame )
+ {
+ if ( maContext == nullptr )
+ {
+ SalI18N_InputMethod *pInputMethod;
+ pInputMethod = vcl_sal::getSalDisplay(GetGenericUnixSalData())->GetInputMethod();
+
+ maContext = XCreateIC( pInputMethod->GetMethod(),
+ XNVaNestedList, mpAttributes,
+ nullptr );
+ }
+ if( maClientData.pFrame != pFrame )
+ SetICFocus( pFrame );
+ }
+ }
+}
+
+// Handle DestroyCallbacks
+// in fact this is a callback called from the XNDestroyCallback
+
+void
+SalI18N_InputContext::HandleDestroyIM()
+{
+ maContext = nullptr; // don't change
+ mbUseable = False;
+}
+
+// make sure, the input method gets all the X-Events it needs, this is only
+// called once on each frame, it relies on a valid maContext
+
+void
+SalI18N_InputContext::ExtendEventMask( ::Window aFocusWindow )
+{
+ unsigned long nIMEventMask;
+ XWindowAttributes aWindowAttributes;
+
+ if ( mbUseable )
+ {
+ Display *pDisplay = XDisplayOfIM( XIMOfIC(maContext) );
+
+ XGetWindowAttributes( pDisplay, aFocusWindow,
+ &aWindowAttributes );
+ XGetICValues ( maContext,
+ XNFilterEvents, &nIMEventMask,
+ nullptr);
+ nIMEventMask |= aWindowAttributes.your_event_mask;
+ XSelectInput ( pDisplay, aFocusWindow, nIMEventMask );
+ }
+}
+
+// tune the styles provided by the input method with the supported one
+
+unsigned int
+SalI18N_InputContext::GetWeightingOfIMStyle( XIMStyle nStyle )
+{
+ struct StyleWeightingT {
+ const XIMStyle nStyle;
+ const unsigned int nWeight;
+ };
+
+ StyleWeightingT const *pWeightPtr;
+ static const StyleWeightingT pWeight[] = {
+ { XIMPreeditCallbacks, 0x10000000 },
+ { XIMPreeditPosition, 0x02000000 },
+ { XIMPreeditArea, 0x01000000 },
+ { XIMPreeditNothing, 0x00100000 },
+ { XIMPreeditNone, 0x00010000 },
+ { XIMStatusCallbacks, 0x1000 },
+ { XIMStatusArea, 0x0100 },
+ { XIMStatusNothing, 0x0010 },
+ { XIMStatusNone, 0x0001 },
+ { 0, 0x0 }
+ };
+
+ int nWeight = 0;
+ for ( pWeightPtr = pWeight; pWeightPtr->nStyle != 0; pWeightPtr++ )
+ {
+ if ( (pWeightPtr->nStyle & nStyle) != 0 )
+ nWeight += pWeightPtr->nWeight;
+ }
+ return nWeight;
+}
+
+bool
+SalI18N_InputContext::IsSupportedIMStyle( XIMStyle nStyle ) const
+{
+ return (nStyle & mnSupportedPreeditStyle)
+ && (nStyle & g_nSupportedStatusStyle);
+}
+
+bool
+SalI18N_InputContext::SupportInputMethodStyle( XIMStyles const *pIMStyles )
+{
+ mnPreeditStyle = 0;
+ mnStatusStyle = 0;
+
+ if ( pIMStyles != nullptr )
+ {
+ int nBestScore = 0;
+ int nActualScore = 0;
+
+ // check whether the XIM supports one of the desired styles
+ // only a single preedit and a single status style must occur
+ // in an input method style. Hideki said so, so i trust him
+ for ( int nStyle = 0; nStyle < pIMStyles->count_styles; nStyle++ )
+ {
+ XIMStyle nProvidedStyle = pIMStyles->supported_styles[ nStyle ];
+ if ( IsSupportedIMStyle(nProvidedStyle) )
+ {
+ nActualScore = GetWeightingOfIMStyle( nProvidedStyle );
+ if ( nActualScore >= nBestScore )
+ {
+ nBestScore = nActualScore;
+ mnPreeditStyle = nProvidedStyle & mnSupportedPreeditStyle;
+ mnStatusStyle = nProvidedStyle & g_nSupportedStatusStyle;
+ }
+ }
+ }
+ }
+
+ return (mnPreeditStyle != 0) && (mnStatusStyle != 0) ;
+}
+
+// handle extended and normal key input
+
+void
+SalI18N_InputContext::CommitKeyEvent(sal_Unicode const * pText, std::size_t nLength)
+{
+ if (nLength == 1 && IsControlCode(pText[0]))
+ return;
+
+ if( maClientData.pFrame )
+ {
+ SalExtTextInputEvent aTextEvent;
+
+ aTextEvent.mpTextAttr = nullptr;
+ aTextEvent.mnCursorPos = nLength;
+ aTextEvent.maText = OUString(pText, nLength);
+ aTextEvent.mnCursorFlags = 0;
+
+ maClientData.pFrame->CallCallback(SalEvent::ExtTextInput, static_cast<void*>(&aTextEvent));
+ maClientData.pFrame->CallCallback(SalEvent::EndExtTextInput, nullptr);
+ }
+#if OSL_DEBUG_LEVEL > 1
+ else
+ SAL_WARN("vcl.app", "CommitKeyEvent without frame.");
+#endif
+}
+
+int
+SalI18N_InputContext::UpdateSpotLocation()
+{
+ if (maContext == nullptr || maClientData.pFrame == nullptr)
+ return -1;
+
+ SalExtTextInputPosEvent aPosEvent;
+ maClientData.pFrame->CallCallback(SalEvent::ExtTextInputPos, static_cast<void*>(&aPosEvent));
+
+ XPoint aSpot;
+ aSpot.x = aPosEvent.mnX + aPosEvent.mnWidth;
+ aSpot.y = aPosEvent.mnY + aPosEvent.mnHeight;
+
+ XVaNestedList preedit_attr = XVaCreateNestedList(0, XNSpotLocation, &aSpot, nullptr);
+ XSetICValues(maContext, XNPreeditAttributes, preedit_attr, nullptr);
+ XFree(preedit_attr);
+
+ return 0;
+}
+
+// set and unset the focus for the Input Context
+// the context may be NULL despite it is usable if the framewindow is
+// in unmapped state
+
+void
+SalI18N_InputContext::SetICFocus( SalFrame* pFocusFrame )
+{
+ if ( mbUseable && (maContext != nullptr) )
+ {
+ maClientData.pFrame = pFocusFrame;
+
+ const SystemEnvData* pEnv = pFocusFrame->GetSystemData();
+ ::Window aClientWindow = pEnv->aShellWindow;
+ ::Window aFocusWindow = pEnv->aWindow;
+
+ XSetICValues( maContext,
+ XNFocusWindow, aFocusWindow,
+ XNClientWindow, aClientWindow,
+ nullptr );
+
+ if( maClientData.aInputEv.mpTextAttr )
+ {
+ sendEmptyCommit(pFocusFrame);
+ // begin preedit again
+ vcl_sal::getSalDisplay(GetGenericUnixSalData())->SendInternalEvent( pFocusFrame, &maClientData.aInputEv, SalEvent::ExtTextInput );
+ }
+
+ XSetICFocus( maContext );
+ }
+}
+
+void
+SalI18N_InputContext::UnsetICFocus()
+{
+
+ if ( mbUseable && (maContext != nullptr) )
+ {
+ // cancel an eventual event posted to begin preedit again
+ vcl_sal::getSalDisplay(GetGenericUnixSalData())->CancelInternalEvent( maClientData.pFrame, &maClientData.aInputEv, SalEvent::ExtTextInput );
+ maClientData.pFrame = nullptr;
+ XUnsetICFocus( maContext );
+ }
+}
+
+// multi byte input method only
+
+void
+SalI18N_InputContext::EndExtTextInput()
+{
+ if ( mbUseable && (maContext != nullptr) && maClientData.pFrame )
+ {
+ vcl::DeletionListener aDel( maClientData.pFrame );
+ // delete preedit in sal (commit an empty string)
+ sendEmptyCommit( maClientData.pFrame );
+ if( ! aDel.isDeleted() )
+ {
+ // mark previous preedit state again (will e.g. be sent at focus gain)
+ maClientData.aInputEv.mpTextAttr = maClientData.aInputFlags.data();
+ if( static_cast<X11SalFrame*>(maClientData.pFrame)->hasFocus() )
+ {
+ // begin preedit again
+ vcl_sal::getSalDisplay(GetGenericUnixSalData())->SendInternalEvent( maClientData.pFrame, &maClientData.aInputEv, SalEvent::ExtTextInput );
+ }
+ }
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 16:31:17 +0000