source: trunk/src/gui/painting/qregion_mac.cpp

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 9.2 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include <private/qt_mac_p.h>
43#include "qcoreapplication.h"
44#include <qlibrary.h>
45
46QT_BEGIN_NAMESPACE
47
48QRegion::QRegionData QRegion::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1), 0 };
49
50#if defined(Q_WS_MAC32) && !defined(QT_MAC_USE_COCOA)
51#define RGN_CACHE_SIZE 200
52#ifdef RGN_CACHE_SIZE
53static bool rgncache_init = false;
54static int rgncache_used;
55static RgnHandle rgncache[RGN_CACHE_SIZE];
56static void qt_mac_cleanup_rgncache()
57{
58 rgncache_init = false;
59 for(int i = 0; i < RGN_CACHE_SIZE; ++i) {
60 if(rgncache[i]) {
61 --rgncache_used;
62 DisposeRgn(rgncache[i]);
63 rgncache[i] = 0;
64 }
65 }
66}
67#endif
68
69Q_GUI_EXPORT RgnHandle qt_mac_get_rgn()
70{
71#ifdef RGN_CACHE_SIZE
72 if(!rgncache_init) {
73 rgncache_used = 0;
74 rgncache_init = true;
75 for(int i = 0; i < RGN_CACHE_SIZE; ++i)
76 rgncache[i] = 0;
77 qAddPostRoutine(qt_mac_cleanup_rgncache);
78 } else if(rgncache_used) {
79 for(int i = 0; i < RGN_CACHE_SIZE; ++i) {
80 if(rgncache[i]) {
81 RgnHandle ret = rgncache[i];
82 SetEmptyRgn(ret);
83 rgncache[i] = 0;
84 --rgncache_used;
85 return ret;
86 }
87 }
88 }
89#endif
90 return NewRgn();
91}
92
93Q_GUI_EXPORT void qt_mac_dispose_rgn(RgnHandle r)
94{
95#ifdef RGN_CACHE_SIZE
96 if(rgncache_init && rgncache_used < RGN_CACHE_SIZE) {
97 for(int i = 0; i < RGN_CACHE_SIZE; ++i) {
98 if(!rgncache[i]) {
99 ++rgncache_used;
100 rgncache[i] = r;
101 return;
102 }
103 }
104 }
105#endif
106 DisposeRgn(r);
107}
108
109static OSStatus qt_mac_get_rgn_rect(UInt16 msg, RgnHandle, const Rect *rect, void *reg)
110{
111 if(msg == kQDRegionToRectsMsgParse) {
112 QRect rct(rect->left, rect->top, (rect->right - rect->left), (rect->bottom - rect->top));
113 if(!rct.isEmpty())
114 *((QRegion *)reg) += rct;
115 }
116 return noErr;
117}
118
119Q_GUI_EXPORT QRegion qt_mac_convert_mac_region(RgnHandle rgn)
120{
121 return QRegion::fromQDRgn(rgn);
122}
123
124QRegion QRegion::fromQDRgn(RgnHandle rgn)
125{
126 QRegion ret;
127 ret.detach();
128 OSStatus oss = QDRegionToRects(rgn, kQDParseRegionFromTopLeft, qt_mac_get_rgn_rect, (void *)&ret);
129 if(oss != noErr)
130 return QRegion();
131 return ret;
132}
133
134/*!
135 \internal
136 Create's a RegionHandle, it's the caller's responsibility to release.
137*/
138RgnHandle QRegion::toQDRgn() const
139{
140 RgnHandle rgnHandle = qt_mac_get_rgn();
141 if(d->qt_rgn && d->qt_rgn->numRects) {
142 RgnHandle tmp_rgn = qt_mac_get_rgn();
143 int n = d->qt_rgn->numRects;
144 const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
145 while (n--) {
146 SetRectRgn(tmp_rgn,
147 qMax(SHRT_MIN, qt_r->x()),
148 qMax(SHRT_MIN, qt_r->y()),
149 qMin(SHRT_MAX, qt_r->right() + 1),
150 qMin(SHRT_MAX, qt_r->bottom() + 1));
151 UnionRgn(rgnHandle, tmp_rgn, rgnHandle);
152 ++qt_r;
153 }
154 qt_mac_dispose_rgn(tmp_rgn);
155 }
156 return rgnHandle;
157}
158
159/*!
160 \internal
161 Create's a RegionHandle, it's the caller's responsibility to release.
162 Returns 0 if the QRegion overflows.
163*/
164RgnHandle QRegion::toQDRgnForUpdate_sys() const
165{
166 RgnHandle rgnHandle = qt_mac_get_rgn();
167 if(d->qt_rgn && d->qt_rgn->numRects) {
168 RgnHandle tmp_rgn = qt_mac_get_rgn();
169 int n = d->qt_rgn->numRects;
170 const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
171 while (n--) {
172
173 // detect overflow. Tested for use with HIViewSetNeedsDisplayInRegion
174 // in QWidgetPrivate::update_sys().
175 enum { HIViewSetNeedsDisplayInRegionOverflow = 10000 }; // empirically determined conservative value
176 if (qt_r->right() > HIViewSetNeedsDisplayInRegionOverflow || qt_r->bottom() > HIViewSetNeedsDisplayInRegionOverflow) {
177 qt_mac_dispose_rgn(tmp_rgn);
178 qt_mac_dispose_rgn(rgnHandle);
179 return 0;
180 }
181
182 SetRectRgn(tmp_rgn,
183 qMax(SHRT_MIN, qt_r->x()),
184 qMax(SHRT_MIN, qt_r->y()),
185 qMin(SHRT_MAX, qt_r->right() + 1),
186 qMin(SHRT_MAX, qt_r->bottom() + 1));
187 UnionRgn(rgnHandle, tmp_rgn, rgnHandle);
188 ++qt_r;
189 }
190 qt_mac_dispose_rgn(tmp_rgn);
191 }
192 return rgnHandle;
193}
194
195#endif
196
197#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
198OSStatus QRegion::shape2QRegionHelper(int inMessage, HIShapeRef,
199 const CGRect *inRect, void *inRefcon)
200{
201 QRegion *region = static_cast<QRegion *>(inRefcon);
202 if (!region)
203 return paramErr;
204
205 switch (inMessage) {
206 case kHIShapeEnumerateRect:
207 *region += QRect(inRect->origin.x, inRect->origin.y,
208 inRect->size.width, inRect->size.height);
209 break;
210 case kHIShapeEnumerateInit:
211 // Assume the region is already setup correctly
212 case kHIShapeEnumerateTerminate:
213 default:
214 break;
215 }
216 return noErr;
217}
218#endif
219
220/*!
221 \internal
222 Create's a mutable shape, it's the caller's responsibility to release.
223 WARNING: this function clamps the coordinates to SHRT_MIN/MAX on 10.4 and below.
224*/
225HIMutableShapeRef QRegion::toHIMutableShape() const
226{
227 HIMutableShapeRef shape = HIShapeCreateMutable();
228#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
229 if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
230 if (d->qt_rgn && d->qt_rgn->numRects) {
231 int n = d->qt_rgn->numRects;
232 const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
233 while (n--) {
234 CGRect cgRect = CGRectMake(qt_r->x(), qt_r->y(), qt_r->width(), qt_r->height());
235 HIShapeUnionWithRect(shape, &cgRect);
236 ++qt_r;
237 }
238 }
239 } else
240#endif
241 {
242#ifndef QT_MAC_USE_COCOA
243 QCFType<HIShapeRef> qdShape = HIShapeCreateWithQDRgn(QMacSmartQuickDrawRegion(toQDRgn()));
244 HIShapeUnion(qdShape, shape, shape);
245#endif
246 }
247 return shape;
248}
249
250#if !defined(Q_WS_MAC64) && !defined(QT_MAC_USE_COCOA)
251typedef OSStatus (*PtrHIShapeGetAsQDRgn)(HIShapeRef, RgnHandle);
252static PtrHIShapeGetAsQDRgn ptrHIShapeGetAsQDRgn = 0;
253#endif
254
255
256QRegion QRegion::fromHIShapeRef(HIShapeRef shape)
257{
258 QRegion returnRegion;
259 returnRegion.detach();
260 // Begin gratuitous #if-defery
261#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
262# ifndef Q_WS_MAC64
263 if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
264# endif
265 HIShapeEnumerate(shape, kHIShapeParseFromTopLeft, shape2QRegionHelper, &returnRegion);
266# ifndef Q_WS_MAC64
267 } else
268# endif
269#endif
270 {
271#if !defined(Q_WS_MAC64) && !defined(QT_MAC_USE_COCOA)
272 if (ptrHIShapeGetAsQDRgn == 0) {
273 QLibrary library(QLatin1String("/System/Library/Frameworks/Carbon.framework/Carbon"));
274 library.setLoadHints(QLibrary::ExportExternalSymbolsHint);
275 ptrHIShapeGetAsQDRgn = reinterpret_cast<PtrHIShapeGetAsQDRgn>(library.resolve("HIShapeGetAsQDRgn"));
276 }
277 RgnHandle rgn = qt_mac_get_rgn();
278 ptrHIShapeGetAsQDRgn(shape, rgn);
279 returnRegion = QRegion::fromQDRgn(rgn);
280 qt_mac_dispose_rgn(rgn);
281#endif
282 }
283 return returnRegion;
284}
285
286QT_END_NAMESPACE
Note: See TracBrowser for help on using the repository browser.