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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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 1.1, 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@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;
}
/*!
\internal
Create's a RegionHandle, it's the caller's responsibility to release.
Returns 0 if the QRegion overflows.
*/
RgnHandle QRegion::toQDRgnForUpdate_sys() 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--) {
// detect overflow. Tested for use with HIViewSetNeedsDisplayInRegion
// in QWidgetPrivate::update_sys().
enum { HIViewSetNeedsDisplayInRegionOverflow = 10000 }; // empirically determined conservative value
if (qt_r->right() > HIViewSetNeedsDisplayInRegionOverflow || qt_r->bottom() > HIViewSetNeedsDisplayInRegionOverflow) {
qt_mac_dispose_rgn(tmp_rgn);
qt_mac_dispose_rgn(rgnHandle);
return 0;
}
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
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