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1/*
2 * Copyright (C) 2004, 2006, 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#import "config.h"
27#import "Cursor.h"
28
29#import "BlockExceptions.h"
30#import <wtf/StdLibExtras.h>
31
32@interface WebCoreCursorBundle : NSObject { }
33@end
34
35@implementation WebCoreCursorBundle
36@end
37
38namespace WebCore {
39
40// Simple NSCursor calls shouldn't need protection,
41// but creating a cursor with a bad image might throw.
42
43static RetainPtr<NSCursor> createCustomCursor(Image* image, const IntPoint& hotSpot)
44{
45    // FIXME: The cursor won't animate.  Not sure if that's a big deal.
46    NSImage* nsImage = image->getNSImage();
47    if (!nsImage)
48        return 0;
49    BEGIN_BLOCK_OBJC_EXCEPTIONS;
50    return RetainPtr<NSCursor>(AdoptNS, [[NSCursor alloc] initWithImage:nsImage hotSpot:hotSpot]);
51    END_BLOCK_OBJC_EXCEPTIONS;
52    return 0;
53}
54
55// Leak these cursors intentionally, that way we won't waste time trying to clean them
56// up at process exit time.
57static NSCursor* leakNamedCursor(const char* name, int x, int y)
58{
59    BEGIN_BLOCK_OBJC_EXCEPTIONS;
60    NSString* resourceName = [[NSString alloc] initWithUTF8String:name];
61    NSImage* cursorImage = [[NSImage alloc] initWithContentsOfFile:
62        [[NSBundle bundleForClass:[WebCoreCursorBundle class]]
63        pathForResource:resourceName ofType:@"png"]];
64    [resourceName release];
65    NSCursor* cursor = 0;
66    if (cursorImage) {
67        NSPoint hotSpotPoint = {x, y}; // workaround for 4213314
68        cursor = [[NSCursor alloc] initWithImage:cursorImage hotSpot:hotSpotPoint];
69        [cursorImage release];
70    }
71    return cursor;
72    END_BLOCK_OBJC_EXCEPTIONS;
73    return nil;
74}
75
76void Cursor::ensurePlatformCursor() const
77{
78    if (m_platformCursor)
79        return;
80
81    switch (m_type) {
82    case Cursor::Pointer:
83        m_platformCursor = [NSCursor arrowCursor];
84        break;
85    case Cursor::Cross:
86        m_platformCursor = leakNamedCursor("crossHairCursor", 11, 11);
87        break;
88    case Cursor::Hand:
89        m_platformCursor = leakNamedCursor("linkCursor", 6, 1);
90        break;
91    case Cursor::IBeam:
92        m_platformCursor = [NSCursor IBeamCursor];
93        break;
94    case Cursor::Wait:
95        m_platformCursor = leakNamedCursor("waitCursor", 7, 7);
96        break;
97    case Cursor::Help:
98        m_platformCursor = leakNamedCursor("helpCursor", 8, 8);
99        break;
100    case Cursor::Move:
101    case Cursor::MiddlePanning:
102        m_platformCursor = leakNamedCursor("moveCursor", 7, 7);
103        break;
104    case Cursor::EastResize:
105    case Cursor::EastPanning:
106        m_platformCursor = leakNamedCursor("eastResizeCursor", 14, 7);
107        break;
108    case Cursor::NorthResize:
109    case Cursor::NorthPanning:
110        m_platformCursor = leakNamedCursor("northResizeCursor", 7, 1);
111        break;
112    case Cursor::NorthEastResize:
113    case Cursor::NorthEastPanning:
114        m_platformCursor = leakNamedCursor("northEastResizeCursor", 14, 1);
115        break;
116    case Cursor::NorthWestResize:
117    case Cursor::NorthWestPanning:
118        m_platformCursor = leakNamedCursor("northWestResizeCursor", 0, 0);
119        break;
120    case Cursor::SouthResize:
121    case Cursor::SouthPanning:
122        m_platformCursor = leakNamedCursor("southResizeCursor", 7, 14);
123        break;
124    case Cursor::SouthEastResize:
125    case Cursor::SouthEastPanning:
126        m_platformCursor = leakNamedCursor("southEastResizeCursor", 14, 14);
127        break;
128    case Cursor::SouthWestResize:
129    case Cursor::SouthWestPanning:
130        m_platformCursor = leakNamedCursor("southWestResizeCursor", 1, 14);
131        break;
132    case Cursor::WestResize:
133        m_platformCursor = leakNamedCursor("westResizeCursor", 1, 7);
134        break;
135    case Cursor::NorthSouthResize:
136        m_platformCursor = leakNamedCursor("northSouthResizeCursor", 7, 7);
137        break;
138    case Cursor::EastWestResize:
139    case Cursor::WestPanning:
140        m_platformCursor = leakNamedCursor("eastWestResizeCursor", 7, 7);
141        break;
142    case Cursor::NorthEastSouthWestResize:
143        m_platformCursor = leakNamedCursor("northEastSouthWestResizeCursor", 7, 7);
144        break;
145    case Cursor::NorthWestSouthEastResize:
146        m_platformCursor = leakNamedCursor("northWestSouthEastResizeCursor", 7, 7);
147        break;
148    case Cursor::ColumnResize:
149        m_platformCursor = [NSCursor resizeLeftRightCursor];
150        break;
151    case Cursor::RowResize:
152        m_platformCursor = [NSCursor resizeUpDownCursor];
153        break;
154    case Cursor::VerticalText:
155        m_platformCursor = leakNamedCursor("verticalTextCursor", 7, 7);
156        break;
157    case Cursor::Cell:
158        m_platformCursor = leakNamedCursor("cellCursor", 7, 7);
159        break;
160    case Cursor::ContextMenu:
161        m_platformCursor = leakNamedCursor("contextMenuCursor", 3, 2);
162        break;
163    case Cursor::Alias:
164        m_platformCursor = leakNamedCursor("aliasCursor", 11, 3);
165        break;
166    case Cursor::Progress:
167        m_platformCursor = leakNamedCursor("progressCursor", 3, 2);
168        break;
169    case Cursor::NoDrop:
170        m_platformCursor = leakNamedCursor("noDropCursor", 3, 1);
171        break;
172    case Cursor::Copy:
173        m_platformCursor = leakNamedCursor("copyCursor", 3, 2);
174        break;
175    case Cursor::None:
176        m_platformCursor = leakNamedCursor("noneCursor", 7, 7);
177        break;
178    case Cursor::NotAllowed:
179        m_platformCursor = leakNamedCursor("notAllowedCursor", 11, 11);
180        break;
181    case Cursor::ZoomIn:
182        m_platformCursor = leakNamedCursor("zoomInCursor", 7, 7);
183        break;
184    case Cursor::ZoomOut:
185        m_platformCursor = leakNamedCursor("zoomOutCursor", 7, 7);
186        break;
187    case Cursor::Grab:
188        m_platformCursor = [NSCursor openHandCursor];
189        break;
190    case Cursor::Grabbing:
191        m_platformCursor = [NSCursor closedHandCursor];
192        break;
193    case Cursor::Custom:
194        m_platformCursor = createCustomCursor(m_image.get(), m_hotSpot);
195        break;
196    }
197}
198
199Cursor::Cursor(const Cursor& other)
200    : m_type(other.m_type)
201    , m_image(other.m_image)
202    , m_hotSpot(other.m_hotSpot)
203    , m_platformCursor(other.m_platformCursor)
204{
205}
206
207Cursor& Cursor::operator=(const Cursor& other)
208{
209    m_type = other.m_type;
210    m_image = other.m_image;
211    m_hotSpot = other.m_hotSpot;
212    m_platformCursor = other.m_platformCursor;
213    return *this;
214}
215
216Cursor::~Cursor()
217{
218}
219
220NSCursor *Cursor::platformCursor() const
221{
222    ensurePlatformCursor();
223    return m_platformCursor.get();
224}
225
226} // namespace WebCore
227