Long live Qt!

1 files changed, 249 insertions, 0 deletions

diff --git a/src/gui/painting/qregion_mac.cpp b/src/gui/painting/qregion_mac.cpp
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+++ b/src/gui/painting/qregion_mac.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qt_mac_p.h>
+#include "qcoreapplication.h"
+#include <qlibrary.h>
+
+QT_BEGIN_NAMESPACE
+
+QRegion::QRegionData QRegion::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1), 0 };
+
+#if defined(Q_WS_MAC32) && !defined(QT_MAC_USE_COCOA)
+#define RGN_CACHE_SIZE 200
+#ifdef RGN_CACHE_SIZE
+static bool rgncache_init = false;
+static int rgncache_used;
+static RgnHandle rgncache[RGN_CACHE_SIZE];
+static void qt_mac_cleanup_rgncache()
+{
+    rgncache_init = false;
+    for(int i = 0; i < RGN_CACHE_SIZE; ++i) {
+        if(rgncache[i]) {
+            --rgncache_used;
+            DisposeRgn(rgncache[i]);
+            rgncache[i] = 0;
+        }
+    }
+}
+#endif
+
+Q_GUI_EXPORT RgnHandle qt_mac_get_rgn()
+{
+#ifdef RGN_CACHE_SIZE
+    if(!rgncache_init) {
+        rgncache_used = 0;
+        rgncache_init = true;
+        for(int i = 0; i < RGN_CACHE_SIZE; ++i)
+            rgncache[i] = 0;
+        qAddPostRoutine(qt_mac_cleanup_rgncache);
+    } else if(rgncache_used) {
+        for(int i = 0; i < RGN_CACHE_SIZE; ++i) {
+            if(rgncache[i]) {
+                RgnHandle ret = rgncache[i];
+                SetEmptyRgn(ret);
+                rgncache[i] = 0;
+                --rgncache_used;
+                return ret;
+            }
+        }
+    }
+#endif
+    return NewRgn();
+}
+
+Q_GUI_EXPORT void qt_mac_dispose_rgn(RgnHandle r)
+{
+#ifdef RGN_CACHE_SIZE
+    if(rgncache_init && rgncache_used < RGN_CACHE_SIZE) {
+        for(int i = 0; i < RGN_CACHE_SIZE; ++i) {
+            if(!rgncache[i]) {
+                ++rgncache_used;
+                rgncache[i] = r;
+                return;
+            }
+        }
+    }
+#endif
+    DisposeRgn(r);
+}
+
+static OSStatus qt_mac_get_rgn_rect(UInt16 msg, RgnHandle, const Rect *rect, void *reg)
+{
+    if(msg == kQDRegionToRectsMsgParse) {
+        QRect rct(rect->left, rect->top, (rect->right - rect->left), (rect->bottom - rect->top));
+        if(!rct.isEmpty())
+            *((QRegion *)reg) += rct;
+    }
+    return noErr;
+}
+
+Q_GUI_EXPORT QRegion qt_mac_convert_mac_region(RgnHandle rgn)
+{
+    return QRegion::fromQDRgn(rgn);
+}
+
+QRegion QRegion::fromQDRgn(RgnHandle rgn)
+{
+    QRegion ret;
+    ret.detach();
+    OSStatus oss = QDRegionToRects(rgn, kQDParseRegionFromTopLeft, qt_mac_get_rgn_rect, (void *)&ret);
+    if(oss != noErr)
+        return QRegion();
+    return ret;
+}
+
+/*!
+    \internal
+     Create's a RegionHandle, it's the caller's responsibility to release.
+*/
+RgnHandle QRegion::toQDRgn() const
+{
+    RgnHandle rgnHandle = qt_mac_get_rgn();
+    if(d->qt_rgn && d->qt_rgn->numRects) {
+        RgnHandle tmp_rgn = qt_mac_get_rgn();
+        int n = d->qt_rgn->numRects;
+        const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
+        while (n--) {
+            SetRectRgn(tmp_rgn,
+                       qMax(SHRT_MIN, qt_r->x()),
+                       qMax(SHRT_MIN, qt_r->y()),
+                       qMin(SHRT_MAX, qt_r->right() + 1),
+                       qMin(SHRT_MAX, qt_r->bottom() + 1));
+            UnionRgn(rgnHandle, tmp_rgn, rgnHandle);
+            ++qt_r;
+        }
+        qt_mac_dispose_rgn(tmp_rgn);
+    }
+    return rgnHandle;
+}
+#endif
+
+#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+OSStatus QRegion::shape2QRegionHelper(int inMessage, HIShapeRef,
+                                      const CGRect *inRect, void *inRefcon)
+{
+    QRegion *region = static_cast<QRegion *>(inRefcon);
+    if (!region)
+        return paramErr;
+
+    switch (inMessage) {
+    case kHIShapeEnumerateRect:
+        *region += QRect(inRect->origin.x, inRect->origin.y,
+                         inRect->size.width, inRect->size.height);
+        break;
+    case kHIShapeEnumerateInit:
+        // Assume the region is already setup correctly
+    case kHIShapeEnumerateTerminate:
+    default:
+        break;
+    }
+    return noErr;
+}
+#endif
+
+/*!
+    \internal
+     Create's a mutable shape, it's the caller's responsibility to release.
+     WARNING: this function clamps the coordinates to SHRT_MIN/MAX on 10.4 and below.
+*/
+HIMutableShapeRef QRegion::toHIMutableShape() const
+{
+    HIMutableShapeRef shape = HIShapeCreateMutable();
+#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
+        if (d->qt_rgn && d->qt_rgn->numRects) {
+            int n = d->qt_rgn->numRects;
+            const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
+            while (n--) {
+                CGRect cgRect = CGRectMake(qt_r->x(), qt_r->y(), qt_r->width(), qt_r->height());
+                HIShapeUnionWithRect(shape, &cgRect);
+                ++qt_r;
+            }
+        }
+    } else
+#endif
+    {
+#ifndef QT_MAC_USE_COCOA
+        QCFType<HIShapeRef> qdShape = HIShapeCreateWithQDRgn(QMacSmartQuickDrawRegion(toQDRgn()));
+        HIShapeUnion(qdShape, shape, shape);
+#endif
+    }
+    return shape;
+}
+
+#if !defined(Q_WS_MAC64) && !defined(QT_MAC_USE_COCOA)
+typedef OSStatus (*PtrHIShapeGetAsQDRgn)(HIShapeRef, RgnHandle);
+static PtrHIShapeGetAsQDRgn ptrHIShapeGetAsQDRgn = 0;
+#endif
+
+
+QRegion QRegion::fromHIShapeRef(HIShapeRef shape)
+{
+    QRegion returnRegion;
+    returnRegion.detach();
+    // Begin gratuitous #if-defery
+#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+# ifndef Q_WS_MAC64
+    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
+# endif
+        HIShapeEnumerate(shape, kHIShapeParseFromTopLeft, shape2QRegionHelper, &returnRegion);
+# ifndef Q_WS_MAC64
+    } else
+# endif
+#endif
+    {
+#if !defined(Q_WS_MAC64) && !defined(QT_MAC_USE_COCOA)
+        if (ptrHIShapeGetAsQDRgn == 0) {
+            QLibrary library(QLatin1String("/System/Library/Frameworks/Carbon.framework/Carbon"));
+            library.setLoadHints(QLibrary::ExportExternalSymbolsHint);
+                    ptrHIShapeGetAsQDRgn = reinterpret_cast<PtrHIShapeGetAsQDRgn>(library.resolve("HIShapeGetAsQDRgn"));
+        }
+        RgnHandle rgn = qt_mac_get_rgn();
+        ptrHIShapeGetAsQDRgn(shape, rgn);
+        returnRegion = QRegion::fromQDRgn(rgn);
+        qt_mac_dispose_rgn(rgn);
+#endif
+    }
+    return returnRegion;
+}
+
+QT_END_NAMESPACE