1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/common/cursors/webcursor.h"
7 #import <AppKit/AppKit.h>
9 #include "base/logging.h"
10 #include "base/mac/mac_util.h"
11 #include "base/mac/scoped_cftyperef.h"
12 #include "base/mac/sdk_forward_declarations.h"
13 #include "content/app/resources/grit/content_resources.h"
14 #include "content/public/common/content_client.h"
15 #include "skia/ext/skia_utils_mac.h"
16 #include "third_party/WebKit/public/platform/WebCursorInfo.h"
17 #include "third_party/WebKit/public/platform/WebSize.h"
18 #include "ui/gfx/image/image.h"
19 #include "ui/gfx/point_conversions.h"
20 #include "ui/gfx/size_conversions.h"
22 using blink::WebCursorInfo;
25 // Private interface to CoreCursor, as of Mac OS X 10.7. This is essentially the
26 // implementation of WKCursor in WebKitSystemInterface.
32 kOperationNotAllowedCursor = 3,
33 kBusyButClickableCursor = 4,
35 kClosedHandCursor = 11,
37 kPointingHandCursor = 13,
38 kCountingUpHandCursor = 14,
39 kCountingDownHandCursor = 15,
40 kCountingUpAndDownHandCursor = 16,
41 kResizeLeftCursor = 17,
42 kResizeRightCursor = 18,
43 kResizeLeftRightCursor = 19,
44 kCrosshairCursor = 20,
46 kResizeDownCursor = 22,
47 kResizeUpDownCursor = 23,
48 kContextualMenuCursor = 24,
49 kDisappearingItemCursor = 25,
50 kVerticalIBeamCursor = 26,
51 kResizeEastCursor = 27,
52 kResizeEastWestCursor = 28,
53 kResizeNortheastCursor = 29,
54 kResizeNortheastSouthwestCursor = 30,
55 kResizeNorthCursor = 31,
56 kResizeNorthSouthCursor = 32,
57 kResizeNorthwestCursor = 33,
58 kResizeNorthwestSoutheastCursor = 34,
59 kResizeSoutheastCursor = 35,
60 kResizeSouthCursor = 36,
61 kResizeSouthwestCursor = 37,
62 kResizeWestCursor = 38,
64 kHelpCursor = 40, // Present on >= 10.7.3.
65 kCellCursor = 41, // Present on >= 10.7.3.
66 kZoomInCursor = 42, // Present on >= 10.7.3.
67 kZoomOutCursor = 43 // Present on >= 10.7.3.
69 typedef long long CrCoreCursorType;
71 @interface CrCoreCursor : NSCursor {
73 CrCoreCursorType type_;
76 + (id)cursorWithType:(CrCoreCursorType)type;
77 - (id)initWithType:(CrCoreCursorType)type;
78 - (CrCoreCursorType)_coreCursorType;
82 @implementation CrCoreCursor
84 + (id)cursorWithType:(CrCoreCursorType)type {
85 NSCursor* cursor = [[CrCoreCursor alloc] initWithType:type];
87 return [cursor autorelease];
93 - (id)initWithType:(CrCoreCursorType)type {
94 if ((self = [super init])) {
100 - (CrCoreCursorType)_coreCursorType {
108 NSCursor* LoadCursor(int resource_id, int hotspot_x, int hotspot_y) {
109 const gfx::Image& cursor_image =
110 content::GetContentClient()->GetNativeImageNamed(resource_id);
111 DCHECK(!cursor_image.IsEmpty());
112 return [[[NSCursor alloc] initWithImage:cursor_image.ToNSImage()
113 hotSpot:NSMakePoint(hotspot_x,
114 hotspot_y)] autorelease];
117 // Gets a specified cursor from CoreCursor, falling back to loading it from the
118 // image cache if CoreCursor cannot provide it.
119 NSCursor* GetCoreCursorWithFallback(CrCoreCursorType type,
123 if (base::mac::IsOSLionOrLater()) {
124 NSCursor* cursor = [CrCoreCursor cursorWithType:type];
129 return LoadCursor(resource_id, hotspot_x, hotspot_y);
132 NSCursor* CreateCustomCursor(const std::vector<char>& custom_data,
133 const gfx::Size& custom_size,
135 const gfx::Point& hotspot) {
136 // If the data is missing, leave the backing transparent.
138 size_t data_size = 0;
139 if (!custom_data.empty()) {
140 // This is safe since we're not going to draw into the context we're
142 data = const_cast<char*>(&custom_data[0]);
143 data_size = custom_data.size();
146 // If the size is empty, use a 1x1 transparent image.
147 gfx::Size size = custom_size;
148 if (size.IsEmpty()) {
154 if (bitmap.allocN32Pixels(size.width(), size.height()) && data)
155 memcpy(bitmap.getAddr32(0, 0), data, data_size);
157 bitmap.eraseARGB(0, 0, 0, 0);
159 // Convert from pixels to view units.
160 if (custom_scale == 0)
162 NSSize dip_size = NSSizeFromCGSize(gfx::ToFlooredSize(
163 gfx::ScaleSize(custom_size, 1 / custom_scale)).ToCGSize());
164 NSPoint dip_hotspot = NSPointFromCGPoint(gfx::ToFlooredPoint(
165 gfx::ScalePoint(hotspot, 1 / custom_scale)).ToCGPoint());
167 // Both the image and its representation need to have the same size for
168 // cursors to appear in high resolution on retina displays. Note that the
169 // size of a representation is not the same as pixelsWide or pixelsHigh.
170 NSImage* cursor_image = gfx::SkBitmapToNSImage(bitmap);
171 [cursor_image setSize:dip_size];
172 [[[cursor_image representations] objectAtIndex:0] setSize:dip_size];
174 NSCursor* cursor = [[NSCursor alloc] initWithImage:cursor_image
175 hotSpot:dip_hotspot];
177 return [cursor autorelease];
184 // Match Safari's cursor choices; see platform/mac/CursorMac.mm .
185 gfx::NativeCursor WebCursor::GetNativeCursor() {
187 case WebCursorInfo::TypePointer:
188 return [NSCursor arrowCursor];
189 case WebCursorInfo::TypeCross:
190 return [NSCursor crosshairCursor];
191 case WebCursorInfo::TypeHand:
192 // If >= 10.7, the pointingHandCursor has a shadow so use it. Otherwise
193 // use the custom one.
194 if (base::mac::IsOSLionOrLater())
195 return [NSCursor pointingHandCursor];
197 return LoadCursor(IDR_LINK_CURSOR, 6, 1);
198 case WebCursorInfo::TypeIBeam:
199 return [NSCursor IBeamCursor];
200 case WebCursorInfo::TypeWait:
201 return GetCoreCursorWithFallback(kBusyButClickableCursor,
202 IDR_WAIT_CURSOR, 7, 7);
203 case WebCursorInfo::TypeHelp:
204 return GetCoreCursorWithFallback(kHelpCursor,
205 IDR_HELP_CURSOR, 8, 8);
206 case WebCursorInfo::TypeEastResize:
207 case WebCursorInfo::TypeEastPanning:
208 return GetCoreCursorWithFallback(kResizeEastCursor,
209 IDR_EAST_RESIZE_CURSOR, 14, 7);
210 case WebCursorInfo::TypeNorthResize:
211 case WebCursorInfo::TypeNorthPanning:
212 return GetCoreCursorWithFallback(kResizeNorthCursor,
213 IDR_NORTH_RESIZE_CURSOR, 7, 1);
214 case WebCursorInfo::TypeNorthEastResize:
215 case WebCursorInfo::TypeNorthEastPanning:
216 return GetCoreCursorWithFallback(kResizeNortheastCursor,
217 IDR_NORTHEAST_RESIZE_CURSOR, 14, 1);
218 case WebCursorInfo::TypeNorthWestResize:
219 case WebCursorInfo::TypeNorthWestPanning:
220 return GetCoreCursorWithFallback(kResizeNorthwestCursor,
221 IDR_NORTHWEST_RESIZE_CURSOR, 0, 0);
222 case WebCursorInfo::TypeSouthResize:
223 case WebCursorInfo::TypeSouthPanning:
224 return GetCoreCursorWithFallback(kResizeSouthCursor,
225 IDR_SOUTH_RESIZE_CURSOR, 7, 14);
226 case WebCursorInfo::TypeSouthEastResize:
227 case WebCursorInfo::TypeSouthEastPanning:
228 return GetCoreCursorWithFallback(kResizeSoutheastCursor,
229 IDR_SOUTHEAST_RESIZE_CURSOR, 14, 14);
230 case WebCursorInfo::TypeSouthWestResize:
231 case WebCursorInfo::TypeSouthWestPanning:
232 return GetCoreCursorWithFallback(kResizeSouthwestCursor,
233 IDR_SOUTHWEST_RESIZE_CURSOR, 1, 14);
234 case WebCursorInfo::TypeWestResize:
235 case WebCursorInfo::TypeWestPanning:
236 return GetCoreCursorWithFallback(kResizeWestCursor,
237 IDR_WEST_RESIZE_CURSOR, 1, 7);
238 case WebCursorInfo::TypeNorthSouthResize:
239 return GetCoreCursorWithFallback(kResizeNorthSouthCursor,
240 IDR_NORTHSOUTH_RESIZE_CURSOR, 7, 7);
241 case WebCursorInfo::TypeEastWestResize:
242 return GetCoreCursorWithFallback(kResizeEastWestCursor,
243 IDR_EASTWEST_RESIZE_CURSOR, 7, 7);
244 case WebCursorInfo::TypeNorthEastSouthWestResize:
245 return GetCoreCursorWithFallback(kResizeNortheastSouthwestCursor,
246 IDR_NORTHEASTSOUTHWEST_RESIZE_CURSOR,
248 case WebCursorInfo::TypeNorthWestSouthEastResize:
249 return GetCoreCursorWithFallback(kResizeNorthwestSoutheastCursor,
250 IDR_NORTHWESTSOUTHEAST_RESIZE_CURSOR,
252 case WebCursorInfo::TypeColumnResize:
253 return [NSCursor resizeLeftRightCursor];
254 case WebCursorInfo::TypeRowResize:
255 return [NSCursor resizeUpDownCursor];
256 case WebCursorInfo::TypeMiddlePanning:
257 case WebCursorInfo::TypeMove:
258 return GetCoreCursorWithFallback(kMoveCursor,
259 IDR_MOVE_CURSOR, 7, 7);
260 case WebCursorInfo::TypeVerticalText:
261 // IBeamCursorForVerticalLayout is >= 10.7.
262 if ([NSCursor respondsToSelector:@selector(IBeamCursorForVerticalLayout)])
263 return [NSCursor IBeamCursorForVerticalLayout];
265 return LoadCursor(IDR_VERTICALTEXT_CURSOR, 7, 7);
266 case WebCursorInfo::TypeCell:
267 return GetCoreCursorWithFallback(kCellCursor,
268 IDR_CELL_CURSOR, 7, 7);
269 case WebCursorInfo::TypeContextMenu:
270 return [NSCursor contextualMenuCursor];
271 case WebCursorInfo::TypeAlias:
272 return GetCoreCursorWithFallback(kMakeAliasCursor,
273 IDR_ALIAS_CURSOR, 11, 3);
274 case WebCursorInfo::TypeProgress:
275 return GetCoreCursorWithFallback(kBusyButClickableCursor,
276 IDR_PROGRESS_CURSOR, 3, 2);
277 case WebCursorInfo::TypeNoDrop:
278 case WebCursorInfo::TypeNotAllowed:
279 return [NSCursor operationNotAllowedCursor];
280 case WebCursorInfo::TypeCopy:
281 return [NSCursor dragCopyCursor];
282 case WebCursorInfo::TypeNone:
283 return LoadCursor(IDR_NONE_CURSOR, 7, 7);
284 case WebCursorInfo::TypeZoomIn:
285 return GetCoreCursorWithFallback(kZoomInCursor,
286 IDR_ZOOMIN_CURSOR, 7, 7);
287 case WebCursorInfo::TypeZoomOut:
288 return GetCoreCursorWithFallback(kZoomOutCursor,
289 IDR_ZOOMOUT_CURSOR, 7, 7);
290 case WebCursorInfo::TypeGrab:
291 return [NSCursor openHandCursor];
292 case WebCursorInfo::TypeGrabbing:
293 return [NSCursor closedHandCursor];
294 case WebCursorInfo::TypeCustom:
295 return CreateCustomCursor(
296 custom_data_, custom_size_, custom_scale_, hotspot_);
302 void WebCursor::InitFromNSCursor(NSCursor* cursor) {
303 CursorInfo cursor_info;
305 if ([cursor isEqual:[NSCursor arrowCursor]]) {
306 cursor_info.type = WebCursorInfo::TypePointer;
307 } else if ([cursor isEqual:[NSCursor IBeamCursor]]) {
308 cursor_info.type = WebCursorInfo::TypeIBeam;
309 } else if ([cursor isEqual:[NSCursor crosshairCursor]]) {
310 cursor_info.type = WebCursorInfo::TypeCross;
311 } else if ([cursor isEqual:[NSCursor pointingHandCursor]]) {
312 cursor_info.type = WebCursorInfo::TypeHand;
313 } else if ([cursor isEqual:[NSCursor resizeLeftCursor]]) {
314 cursor_info.type = WebCursorInfo::TypeWestResize;
315 } else if ([cursor isEqual:[NSCursor resizeRightCursor]]) {
316 cursor_info.type = WebCursorInfo::TypeEastResize;
317 } else if ([cursor isEqual:[NSCursor resizeLeftRightCursor]]) {
318 cursor_info.type = WebCursorInfo::TypeEastWestResize;
319 } else if ([cursor isEqual:[NSCursor resizeUpCursor]]) {
320 cursor_info.type = WebCursorInfo::TypeNorthResize;
321 } else if ([cursor isEqual:[NSCursor resizeDownCursor]]) {
322 cursor_info.type = WebCursorInfo::TypeSouthResize;
323 } else if ([cursor isEqual:[NSCursor resizeUpDownCursor]]) {
324 cursor_info.type = WebCursorInfo::TypeNorthSouthResize;
325 } else if ([cursor isEqual:[NSCursor openHandCursor]]) {
326 cursor_info.type = WebCursorInfo::TypeGrab;
327 } else if ([cursor isEqual:[NSCursor closedHandCursor]]) {
328 cursor_info.type = WebCursorInfo::TypeGrabbing;
329 } else if ([cursor isEqual:[NSCursor operationNotAllowedCursor]]) {
330 cursor_info.type = WebCursorInfo::TypeNotAllowed;
331 } else if ([cursor isEqual:[NSCursor dragCopyCursor]]) {
332 cursor_info.type = WebCursorInfo::TypeCopy;
333 } else if ([cursor isEqual:[NSCursor contextualMenuCursor]]) {
334 cursor_info.type = WebCursorInfo::TypeContextMenu;
336 [NSCursor respondsToSelector:@selector(IBeamCursorForVerticalLayout)] &&
337 [cursor isEqual:[NSCursor IBeamCursorForVerticalLayout]]) {
338 cursor_info.type = WebCursorInfo::TypeVerticalText;
340 // Also handles the [NSCursor disappearingItemCursor] case. Quick-and-dirty
341 // image conversion; TODO(avi): do better.
342 CGImageRef cg_image = nil;
343 NSImage* image = [cursor image];
344 for (id rep in [image representations]) {
345 if ([rep isKindOfClass:[NSBitmapImageRep class]]) {
346 cg_image = [rep CGImage];
352 cursor_info.type = WebCursorInfo::TypeCustom;
353 NSPoint hot_spot = [cursor hotSpot];
354 cursor_info.hotspot = gfx::Point(hot_spot.x, hot_spot.y);
355 cursor_info.custom_image = gfx::CGImageToSkBitmap(cg_image);
357 cursor_info.type = WebCursorInfo::TypePointer;
361 InitFromCursorInfo(cursor_info);
364 void WebCursor::InitPlatformData() {
368 bool WebCursor::SerializePlatformData(Pickle* pickle) const {
372 bool WebCursor::DeserializePlatformData(PickleIterator* iter) {
376 bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
380 void WebCursor::CleanupPlatformData() {
384 void WebCursor::CopyPlatformData(const WebCursor& other) {
388 } // namespace content