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 "webkit/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 "grit/webkit_resources.h"
13 #include "skia/ext/skia_utils_mac.h"
14 #include "third_party/WebKit/public/platform/WebSize.h"
15 #include "third_party/WebKit/public/web/WebCursorInfo.h"
16 #include "ui/base/resource/resource_bundle.h"
17 #include "ui/gfx/point_conversions.h"
18 #include "ui/gfx/size_conversions.h"
21 using WebKit::WebCursorInfo;
22 using WebKit::WebSize;
24 // Declare symbols that are part of the 10.7 SDK.
25 #if !defined(MAC_OS_X_VERSION_10_7) || \
26 MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
28 @interface NSCursor (LionSDKDeclarations)
29 + (NSCursor*)IBeamCursorForVerticalLayout;
32 #endif // MAC_OS_X_VERSION_10_7
34 // Private interface to CoreCursor, as of Mac OS X 10.7. This is essentially the
35 // implementation of WKCursor in WebKitSystemInterface.
41 kOperationNotAllowedCursor = 3,
42 kBusyButClickableCursor = 4,
44 kClosedHandCursor = 11,
46 kPointingHandCursor = 13,
47 kCountingUpHandCursor = 14,
48 kCountingDownHandCursor = 15,
49 kCountingUpAndDownHandCursor = 16,
50 kResizeLeftCursor = 17,
51 kResizeRightCursor = 18,
52 kResizeLeftRightCursor = 19,
53 kCrosshairCursor = 20,
55 kResizeDownCursor = 22,
56 kResizeUpDownCursor = 23,
57 kContextualMenuCursor = 24,
58 kDisappearingItemCursor = 25,
59 kVerticalIBeamCursor = 26,
60 kResizeEastCursor = 27,
61 kResizeEastWestCursor = 28,
62 kResizeNortheastCursor = 29,
63 kResizeNortheastSouthwestCursor = 30,
64 kResizeNorthCursor = 31,
65 kResizeNorthSouthCursor = 32,
66 kResizeNorthwestCursor = 33,
67 kResizeNorthwestSoutheastCursor = 34,
68 kResizeSoutheastCursor = 35,
69 kResizeSouthCursor = 36,
70 kResizeSouthwestCursor = 37,
71 kResizeWestCursor = 38,
73 kHelpCursor = 40, // Present on >= 10.7.3.
74 kCellCursor = 41, // Present on >= 10.7.3.
75 kZoomInCursor = 42, // Present on >= 10.7.3.
76 kZoomOutCursor = 43 // Present on >= 10.7.3.
78 typedef long long CrCoreCursorType;
80 @interface CrCoreCursor : NSCursor {
82 CrCoreCursorType type_;
85 + (id)cursorWithType:(CrCoreCursorType)type;
86 - (id)initWithType:(CrCoreCursorType)type;
87 - (CrCoreCursorType)_coreCursorType;
91 @implementation CrCoreCursor
93 + (id)cursorWithType:(CrCoreCursorType)type {
94 NSCursor* cursor = [[CrCoreCursor alloc] initWithType:type];
96 return [cursor autorelease];
102 - (id)initWithType:(CrCoreCursorType)type {
103 if ((self = [super init])) {
109 - (CrCoreCursorType)_coreCursorType {
117 NSCursor* LoadCursor(int resource_id, int hotspot_x, int hotspot_y) {
118 const gfx::Image& cursor_image =
119 ResourceBundle::GetSharedInstance().GetNativeImageNamed(resource_id);
120 DCHECK(!cursor_image.IsEmpty());
121 return [[[NSCursor alloc] initWithImage:cursor_image.ToNSImage()
122 hotSpot:NSMakePoint(hotspot_x,
123 hotspot_y)] autorelease];
126 // Gets a specified cursor from CoreCursor, falling back to loading it from the
127 // image cache if CoreCursor cannot provide it.
128 NSCursor* GetCoreCursorWithFallback(CrCoreCursorType type,
132 if (base::mac::IsOSLionOrLater()) {
133 NSCursor* cursor = [CrCoreCursor cursorWithType:type];
138 return LoadCursor(resource_id, hotspot_x, hotspot_y);
141 // TODO(avi): When Skia becomes default, fold this function into the remaining
142 // caller, InitFromCursor().
143 CGImageRef CreateCGImageFromCustomData(const std::vector<char>& custom_data,
144 const gfx::Size& custom_size) {
145 // If the data is missing, leave the backing transparent.
147 if (!custom_data.empty()) {
148 // This is safe since we're not going to draw into the context we're
150 data = const_cast<char*>(&custom_data[0]);
153 // If the size is empty, use a 1x1 transparent image.
154 gfx::Size size = custom_size;
155 if (size.IsEmpty()) {
160 base::ScopedCFTypeRef<CGColorSpaceRef> cg_color(
161 CGColorSpaceCreateDeviceRGB());
162 // The settings here match SetCustomData() below; keep in sync.
163 base::ScopedCFTypeRef<CGContextRef> context(CGBitmapContextCreate(
170 kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big));
171 return CGBitmapContextCreateImage(context.get());
174 NSCursor* CreateCustomCursor(const std::vector<char>& custom_data,
175 const gfx::Size& custom_size,
177 const gfx::Point& hotspot) {
178 // If the data is missing, leave the backing transparent.
180 size_t data_size = 0;
181 if (!custom_data.empty()) {
182 // This is safe since we're not going to draw into the context we're
184 data = const_cast<char*>(&custom_data[0]);
185 data_size = custom_data.size();
188 // If the size is empty, use a 1x1 transparent image.
189 gfx::Size size = custom_size;
190 if (size.IsEmpty()) {
196 bitmap.setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
197 bitmap.allocPixels();
199 memcpy(bitmap.getAddr32(0, 0), data, data_size);
201 bitmap.eraseARGB(0, 0, 0, 0);
203 // Convert from pixels to view units.
204 if (custom_scale == 0)
206 NSSize dip_size = NSSizeFromCGSize(gfx::ToFlooredSize(
207 gfx::ScaleSize(custom_size, 1 / custom_scale)).ToCGSize());
208 NSPoint dip_hotspot = NSPointFromCGPoint(gfx::ToFlooredPoint(
209 gfx::ScalePoint(hotspot, 1 / custom_scale)).ToCGPoint());
211 // Both the image and its representation need to have the same size for
212 // cursors to appear in high resolution on retina displays. Note that the
213 // size of a representation is not the same as pixelsWide or pixelsHigh.
214 NSImage* cursor_image = gfx::SkBitmapToNSImage(bitmap);
215 [cursor_image setSize:dip_size];
216 [[[cursor_image representations] objectAtIndex:0] setSize:dip_size];
218 NSCursor* cursor = [[NSCursor alloc] initWithImage:cursor_image
219 hotSpot:dip_hotspot];
221 return [cursor autorelease];
226 // Match Safari's cursor choices; see platform/mac/CursorMac.mm .
227 gfx::NativeCursor WebCursor::GetNativeCursor() {
229 case WebCursorInfo::TypePointer:
230 return [NSCursor arrowCursor];
231 case WebCursorInfo::TypeCross:
232 return [NSCursor crosshairCursor];
233 case WebCursorInfo::TypeHand:
234 // If >= 10.7, the pointingHandCursor has a shadow so use it. Otherwise
235 // use the custom one.
236 if (base::mac::IsOSLionOrLater())
237 return [NSCursor pointingHandCursor];
239 return LoadCursor(IDR_LINK_CURSOR, 6, 1);
240 case WebCursorInfo::TypeIBeam:
241 return [NSCursor IBeamCursor];
242 case WebCursorInfo::TypeWait:
243 return GetCoreCursorWithFallback(kBusyButClickableCursor,
244 IDR_WAIT_CURSOR, 7, 7);
245 case WebCursorInfo::TypeHelp:
246 return GetCoreCursorWithFallback(kHelpCursor,
247 IDR_HELP_CURSOR, 8, 8);
248 case WebCursorInfo::TypeEastResize:
249 case WebCursorInfo::TypeEastPanning:
250 return GetCoreCursorWithFallback(kResizeEastCursor,
251 IDR_EAST_RESIZE_CURSOR, 14, 7);
252 case WebCursorInfo::TypeNorthResize:
253 case WebCursorInfo::TypeNorthPanning:
254 return GetCoreCursorWithFallback(kResizeNorthCursor,
255 IDR_NORTH_RESIZE_CURSOR, 7, 1);
256 case WebCursorInfo::TypeNorthEastResize:
257 case WebCursorInfo::TypeNorthEastPanning:
258 return GetCoreCursorWithFallback(kResizeNortheastCursor,
259 IDR_NORTHEAST_RESIZE_CURSOR, 14, 1);
260 case WebCursorInfo::TypeNorthWestResize:
261 case WebCursorInfo::TypeNorthWestPanning:
262 return GetCoreCursorWithFallback(kResizeNorthwestCursor,
263 IDR_NORTHWEST_RESIZE_CURSOR, 0, 0);
264 case WebCursorInfo::TypeSouthResize:
265 case WebCursorInfo::TypeSouthPanning:
266 return GetCoreCursorWithFallback(kResizeSouthCursor,
267 IDR_SOUTH_RESIZE_CURSOR, 7, 14);
268 case WebCursorInfo::TypeSouthEastResize:
269 case WebCursorInfo::TypeSouthEastPanning:
270 return GetCoreCursorWithFallback(kResizeSoutheastCursor,
271 IDR_SOUTHEAST_RESIZE_CURSOR, 14, 14);
272 case WebCursorInfo::TypeSouthWestResize:
273 case WebCursorInfo::TypeSouthWestPanning:
274 return GetCoreCursorWithFallback(kResizeSouthwestCursor,
275 IDR_SOUTHWEST_RESIZE_CURSOR, 1, 14);
276 case WebCursorInfo::TypeWestResize:
277 case WebCursorInfo::TypeWestPanning:
278 return GetCoreCursorWithFallback(kResizeWestCursor,
279 IDR_WEST_RESIZE_CURSOR, 1, 7);
280 case WebCursorInfo::TypeNorthSouthResize:
281 return GetCoreCursorWithFallback(kResizeNorthSouthCursor,
282 IDR_NORTHSOUTH_RESIZE_CURSOR, 7, 7);
283 case WebCursorInfo::TypeEastWestResize:
284 return GetCoreCursorWithFallback(kResizeEastWestCursor,
285 IDR_EASTWEST_RESIZE_CURSOR, 7, 7);
286 case WebCursorInfo::TypeNorthEastSouthWestResize:
287 return GetCoreCursorWithFallback(kResizeNortheastSouthwestCursor,
288 IDR_NORTHEASTSOUTHWEST_RESIZE_CURSOR,
290 case WebCursorInfo::TypeNorthWestSouthEastResize:
291 return GetCoreCursorWithFallback(kResizeNorthwestSoutheastCursor,
292 IDR_NORTHWESTSOUTHEAST_RESIZE_CURSOR,
294 case WebCursorInfo::TypeColumnResize:
295 return [NSCursor resizeLeftRightCursor];
296 case WebCursorInfo::TypeRowResize:
297 return [NSCursor resizeUpDownCursor];
298 case WebCursorInfo::TypeMiddlePanning:
299 case WebCursorInfo::TypeMove:
300 return GetCoreCursorWithFallback(kMoveCursor,
301 IDR_MOVE_CURSOR, 7, 7);
302 case WebCursorInfo::TypeVerticalText:
303 // IBeamCursorForVerticalLayout is >= 10.7.
304 if ([NSCursor respondsToSelector:@selector(IBeamCursorForVerticalLayout)])
305 return [NSCursor IBeamCursorForVerticalLayout];
307 return LoadCursor(IDR_VERTICALTEXT_CURSOR, 7, 7);
308 case WebCursorInfo::TypeCell:
309 return GetCoreCursorWithFallback(kCellCursor,
310 IDR_CELL_CURSOR, 7, 7);
311 case WebCursorInfo::TypeContextMenu:
312 return [NSCursor contextualMenuCursor];
313 case WebCursorInfo::TypeAlias:
314 return GetCoreCursorWithFallback(kMakeAliasCursor,
315 IDR_ALIAS_CURSOR, 11, 3);
316 case WebCursorInfo::TypeProgress:
317 return GetCoreCursorWithFallback(kBusyButClickableCursor,
318 IDR_PROGRESS_CURSOR, 3, 2);
319 case WebCursorInfo::TypeNoDrop:
320 case WebCursorInfo::TypeNotAllowed:
321 return [NSCursor operationNotAllowedCursor];
322 case WebCursorInfo::TypeCopy:
323 return [NSCursor dragCopyCursor];
324 case WebCursorInfo::TypeNone:
325 return LoadCursor(IDR_NONE_CURSOR, 7, 7);
326 case WebCursorInfo::TypeZoomIn:
327 return GetCoreCursorWithFallback(kZoomInCursor,
328 IDR_ZOOMIN_CURSOR, 7, 7);
329 case WebCursorInfo::TypeZoomOut:
330 return GetCoreCursorWithFallback(kZoomOutCursor,
331 IDR_ZOOMOUT_CURSOR, 7, 7);
332 case WebCursorInfo::TypeGrab:
333 return [NSCursor openHandCursor];
334 case WebCursorInfo::TypeGrabbing:
335 return [NSCursor closedHandCursor];
336 case WebCursorInfo::TypeCustom:
337 return CreateCustomCursor(
338 custom_data_, custom_size_, custom_scale_, hotspot_);
344 void WebCursor::InitFromNSCursor(NSCursor* cursor) {
345 CursorInfo cursor_info;
347 if ([cursor isEqual:[NSCursor arrowCursor]]) {
348 cursor_info.type = WebCursorInfo::TypePointer;
349 } else if ([cursor isEqual:[NSCursor IBeamCursor]]) {
350 cursor_info.type = WebCursorInfo::TypeIBeam;
351 } else if ([cursor isEqual:[NSCursor crosshairCursor]]) {
352 cursor_info.type = WebCursorInfo::TypeCross;
353 } else if ([cursor isEqual:[NSCursor pointingHandCursor]]) {
354 cursor_info.type = WebCursorInfo::TypeHand;
355 } else if ([cursor isEqual:[NSCursor resizeLeftCursor]]) {
356 cursor_info.type = WebCursorInfo::TypeWestResize;
357 } else if ([cursor isEqual:[NSCursor resizeRightCursor]]) {
358 cursor_info.type = WebCursorInfo::TypeEastResize;
359 } else if ([cursor isEqual:[NSCursor resizeLeftRightCursor]]) {
360 cursor_info.type = WebCursorInfo::TypeEastWestResize;
361 } else if ([cursor isEqual:[NSCursor resizeUpCursor]]) {
362 cursor_info.type = WebCursorInfo::TypeNorthResize;
363 } else if ([cursor isEqual:[NSCursor resizeDownCursor]]) {
364 cursor_info.type = WebCursorInfo::TypeSouthResize;
365 } else if ([cursor isEqual:[NSCursor resizeUpDownCursor]]) {
366 cursor_info.type = WebCursorInfo::TypeNorthSouthResize;
367 } else if ([cursor isEqual:[NSCursor openHandCursor]]) {
368 cursor_info.type = WebCursorInfo::TypeGrab;
369 } else if ([cursor isEqual:[NSCursor closedHandCursor]]) {
370 cursor_info.type = WebCursorInfo::TypeGrabbing;
371 } else if ([cursor isEqual:[NSCursor operationNotAllowedCursor]]) {
372 cursor_info.type = WebCursorInfo::TypeNotAllowed;
373 } else if ([cursor isEqual:[NSCursor dragCopyCursor]]) {
374 cursor_info.type = WebCursorInfo::TypeCopy;
375 } else if ([cursor isEqual:[NSCursor contextualMenuCursor]]) {
376 cursor_info.type = WebCursorInfo::TypeContextMenu;
378 [NSCursor respondsToSelector:@selector(IBeamCursorForVerticalLayout)] &&
379 [cursor isEqual:[NSCursor IBeamCursorForVerticalLayout]]) {
380 cursor_info.type = WebCursorInfo::TypeVerticalText;
382 // Also handles the [NSCursor disappearingItemCursor] case. Quick-and-dirty
383 // image conversion; TODO(avi): do better.
384 CGImageRef cg_image = nil;
385 NSImage* image = [cursor image];
386 for (id rep in [image representations]) {
387 if ([rep isKindOfClass:[NSBitmapImageRep class]]) {
388 cg_image = [rep CGImage];
394 cursor_info.type = WebCursorInfo::TypeCustom;
395 NSPoint hot_spot = [cursor hotSpot];
396 cursor_info.hotspot = gfx::Point(hot_spot.x, hot_spot.y);
397 cursor_info.custom_image = gfx::CGImageToSkBitmap(cg_image);
399 cursor_info.type = WebCursorInfo::TypePointer;
403 InitFromCursorInfo(cursor_info);
406 void WebCursor::InitPlatformData() {
410 bool WebCursor::SerializePlatformData(Pickle* pickle) const {
414 bool WebCursor::DeserializePlatformData(PickleIterator* iter) {
418 bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
422 void WebCursor::CleanupPlatformData() {
426 void WebCursor::CopyPlatformData(const WebCursor& other) {