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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/base/cocoa/cursor_utils.h"
#import <AppKit/AppKit.h>
#include <Foundation/Foundation.h>
#include <stdint.h>
#include "base/notreached.h"
#include "skia/ext/skia_utils_mac.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/mojom/cursor_type.mojom-shared.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image.h"
// Private interface to CoreCursor. See
// https://github.com/WebKit/WebKit/blob/main/Source/WebCore/PAL/pal/spi/mac/HIServicesSPI.h
//
// Note that the column/row resize cursors have a bar in the middle (e.g. <-|->)
// whereas the frame resize cursors have no bar in the middle (e.g. <-->).
enum class CrCoreCursorType : int32_t {
kArrow = 0, // NSCursor.arrowCursor
kIBeam = 1, // NSCursor.IBeamCursor
kMakeAlias = 2, // NSCursor.dragLinkCursor
kOperationNotAllowed = 3, // NSCursor.operationNotAllowedCursor
kBusyButClickable = 4, // NSCursor.busyButClickableCursor (private)
kCopy = 5, // NSCursor.dragCopyCursor
kScreenShotSelection = 7, // -
kScreenShotSelectionToClip = 8, // -
kScreenShotWindow = 9, // -
kScreenShotWindowToClip = 10, // -
kClosedHand = 11, // NSCursor.closedHandCursor
kOpenHand = 12, // NSCursor.openHandCursor
kPointingHand = 13, // NSCursor.pointingHandCursor
kCountingUpHand = 14, // -
kCountingDownHand = 15, // -
kCountingUpAndDownHand = 16, // -
kColumnResizeLeft = 17, // [NSCursor columnResizeCursorInDirections:]
kColumnResizeRight = 18, // [NSCursor columnResizeCursorInDirections:]
kColumnResizeLeftRight = 19, // NSCursor.columnResizeCursor
kCrosshair = 20, // NSCursor.crosshairCursor
kRowResizeUp = 21, // [NSCursor rowResizeCursorInDirections:]
kRowResizeDown = 22, // [NSCursor rowResizeCursorInDirections:]
kRowResizeUpDown = 23, // NSCursor.rowResizeCursor
kContextualMenu = 24, // NSCursor.contextualMenuCursor
kDisappearingItem = 25, // NSCursor.disappearingItemCursor
kVerticalIBeam = 26, // NSCursor.IBeamCursorForVerticalLayout
kFrameResizeEast =
27, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeEastWest =
28, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeNortheast =
29, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeNortheastSouthwest =
30, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeNorth =
31, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeNorthSouth =
32, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeNorthwest =
33, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeNorthwestSoutheast =
34, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeSoutheast =
35, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeSouth =
36, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeSouthwest =
37, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kFrameResizeWest =
38, // [NSCursor frameResizeCursorFromPosition:inDirections:]
kMove = 39, // oddly, not NSCursor._moveCursor (private)
kHelp = 40, // NSCursor._helpCursor (private)
kCell = 41, // -
kZoomIn = 42, // NSCursor.zoomInCursor
kZoomOut = 43, // NSCursor.zoomOutCursor
};
@interface CrCoreCursor : NSCursor
+ (id)cursorWithType:(CrCoreCursorType)type;
@property(readonly, nonatomic) CrCoreCursorType _coreCursorType;
@end
@implementation CrCoreCursor
@synthesize _coreCursorType = _type;
+ (id)cursorWithType:(CrCoreCursorType)type {
return [[CrCoreCursor alloc] initWithType:type];
}
- (id)initWithType:(CrCoreCursorType)type {
if ((self = [super init])) {
_type = type;
}
return self;
}
@end
namespace {
NSCursor* NoneNSCursor() {
static NSCursor* cursor = [[NSCursor alloc]
initWithImage:[[NSImage alloc] initWithSize:NSMakeSize(1, 1)]
hotSpot:NSZeroPoint];
return cursor;
}
NSCursor* CustomNSCursor(const ui::Cursor& cursor) {
float custom_scale = cursor.image_scale_factor();
gfx::Size custom_size(cursor.custom_bitmap().width(),
cursor.custom_bitmap().height());
// Convert from pixels to view units.
if (custom_scale == 0) {
custom_scale = 1;
}
NSSize dip_size = NSSizeFromCGSize(
gfx::ScaleToFlooredSize(custom_size, 1 / custom_scale).ToCGSize());
NSPoint dip_hotspot = NSPointFromCGPoint(
gfx::ScaleToFlooredPoint(cursor.custom_hotspot(), 1 / custom_scale)
.ToCGPoint());
// Both the image and its representation need to have the same size for
// cursors to appear in high resolution on retina displays. Note that the
// size of a representation is not the same as pixelsWide or pixelsHigh.
NSImage* cursor_image = skia::SkBitmapToNSImage(cursor.custom_bitmap());
cursor_image.size = dip_size;
cursor_image.representations[0].size = dip_size;
return [[NSCursor alloc] initWithImage:cursor_image hotSpot:dip_hotspot];
}
} // namespace
namespace ui {
// Match Safari's cursor choices; see
// https://github.com/WebKit/WebKit/blob/main/Source/WebCore/platform/mac/CursorMac.mm
NSCursor* GetNativeCursor(const ui::Cursor& cursor) {
switch (cursor.type()) {
case ui::mojom::CursorType::kNull:
case ui::mojom::CursorType::kPointer:
return NSCursor.arrowCursor;
case ui::mojom::CursorType::kCross:
return NSCursor.crosshairCursor;
case ui::mojom::CursorType::kHand:
return NSCursor.pointingHandCursor;
case ui::mojom::CursorType::kIBeam:
return NSCursor.IBeamCursor;
case ui::mojom::CursorType::kWait:
return [CrCoreCursor cursorWithType:CrCoreCursorType::kBusyButClickable];
case ui::mojom::CursorType::kHelp:
return [CrCoreCursor cursorWithType:CrCoreCursorType::kHelp];
case ui::mojom::CursorType::kEastResize:
case ui::mojom::CursorType::kEastPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionRight
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return [CrCoreCursor cursorWithType:CrCoreCursorType::kFrameResizeEast];
}
case ui::mojom::CursorType::kNorthResize:
case ui::mojom::CursorType::kNorthPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionTop
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return
[CrCoreCursor cursorWithType:CrCoreCursorType::kFrameResizeNorth];
}
case ui::mojom::CursorType::kNorthEastResize:
case ui::mojom::CursorType::kNorthEastPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionTopRight
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeNortheast];
}
case ui::mojom::CursorType::kNorthWestResize:
case ui::mojom::CursorType::kNorthWestPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionTopLeft
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeNorthwest];
}
case ui::mojom::CursorType::kSouthResize:
case ui::mojom::CursorType::kSouthPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionBottom
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return
[CrCoreCursor cursorWithType:CrCoreCursorType::kFrameResizeSouth];
}
case ui::mojom::CursorType::kSouthEastResize:
case ui::mojom::CursorType::kSouthEastPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionBottomRight
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeSoutheast];
}
case ui::mojom::CursorType::kSouthWestResize:
case ui::mojom::CursorType::kSouthWestPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionBottomLeft
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeSouthwest];
}
case ui::mojom::CursorType::kWestResize:
case ui::mojom::CursorType::kWestPanning:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionLeft
inDirections:NSCursorFrameResizeDirectionsOutward];
} else {
return [CrCoreCursor cursorWithType:CrCoreCursorType::kFrameResizeWest];
}
case ui::mojom::CursorType::kNorthSouthResize:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionTop
inDirections:NSCursorFrameResizeDirectionsAll];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeNorthSouth];
}
case ui::mojom::CursorType::kEastWestResize:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionLeft
inDirections:NSCursorFrameResizeDirectionsAll];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeEastWest];
}
case ui::mojom::CursorType::kNorthEastSouthWestResize:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionTopRight
inDirections:NSCursorFrameResizeDirectionsAll];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeNortheastSouthwest];
}
case ui::mojom::CursorType::kNorthWestSouthEastResize:
if (@available(macOS 15.0, *)) {
return [NSCursor
frameResizeCursorFromPosition:NSCursorFrameResizePositionTopLeft
inDirections:NSCursorFrameResizeDirectionsAll];
} else {
return [CrCoreCursor
cursorWithType:CrCoreCursorType::kFrameResizeNorthwestSoutheast];
}
case ui::mojom::CursorType::kColumnResize:
if (@available(macOS 15.0, *)) {
return NSCursor.columnResizeCursor;
} else {
return NSCursor.resizeLeftRightCursor;
}
case ui::mojom::CursorType::kRowResize:
if (@available(macOS 15.0, *)) {
return NSCursor.rowResizeCursor;
} else {
return NSCursor.resizeUpDownCursor;
}
case ui::mojom::CursorType::kMiddlePanning:
case ui::mojom::CursorType::kMiddlePanningVertical:
case ui::mojom::CursorType::kMiddlePanningHorizontal:
case ui::mojom::CursorType::kMove:
return [CrCoreCursor cursorWithType:CrCoreCursorType::kMove];
case ui::mojom::CursorType::kVerticalText:
return NSCursor.IBeamCursorForVerticalLayout;
case ui::mojom::CursorType::kCell:
return [CrCoreCursor cursorWithType:CrCoreCursorType::kCell];
case ui::mojom::CursorType::kContextMenu:
return NSCursor.contextualMenuCursor;
case ui::mojom::CursorType::kAlias:
return NSCursor.dragLinkCursor;
case ui::mojom::CursorType::kProgress:
return [CrCoreCursor cursorWithType:CrCoreCursorType::kBusyButClickable];
case ui::mojom::CursorType::kNoDrop:
case ui::mojom::CursorType::kNotAllowed:
case ui::mojom::CursorType::kEastWestNoResize:
case ui::mojom::CursorType::kNorthEastSouthWestNoResize:
case ui::mojom::CursorType::kNorthSouthNoResize:
case ui::mojom::CursorType::kNorthWestSouthEastNoResize:
return NSCursor.operationNotAllowedCursor;
case ui::mojom::CursorType::kCopy:
return NSCursor.dragCopyCursor;
case ui::mojom::CursorType::kNone:
return NoneNSCursor();
case ui::mojom::CursorType::kZoomIn:
if (@available(macOS 15.0, *)) {
return NSCursor.zoomInCursor;
} else {
return [CrCoreCursor cursorWithType:CrCoreCursorType::kZoomIn];
}
case ui::mojom::CursorType::kZoomOut:
if (@available(macOS 15.0, *)) {
return NSCursor.zoomOutCursor;
} else {
return [CrCoreCursor cursorWithType:CrCoreCursorType::kZoomOut];
}
case ui::mojom::CursorType::kGrab:
return NSCursor.openHandCursor;
case ui::mojom::CursorType::kGrabbing:
return NSCursor.closedHandCursor;
case ui::mojom::CursorType::kCustom:
return CustomNSCursor(cursor);
case ui::mojom::CursorType::kDndNone:
case ui::mojom::CursorType::kDndMove:
case ui::mojom::CursorType::kDndCopy:
case ui::mojom::CursorType::kDndLink:
// These cursors do not apply on Mac.
break;
}
NOTREACHED();
}
} // namespace ui
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