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| 1 // Copyright 2013 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. | |
| 4 | |
| 5 #include "ui/app_list/cocoa/scroll_view_with_no_scrollbars.h" | |
| 6 | |
| 7 #include "base/mac/mac_util.h" | |
| 8 #include "base/mac/scoped_cftyperef.h" | |
| 9 #include "base/mac/scoped_nsobject.h" | |
| 10 | |
| 11 #if !defined(MAC_OS_X_VERSION_10_7) || \ | |
| 12 MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7 | |
| 13 | |
| 14 enum { | |
| 15 NSEventPhaseNone = 0, | |
| 16 NSEventPhaseBegan = 0x1 << 0, | |
| 17 NSEventPhaseStationary = 0x1 << 1, | |
| 18 NSEventPhaseChanged = 0x1 << 2, | |
| 19 NSEventPhaseEnded = 0x1 << 3, | |
| 20 NSEventPhaseCancelled = 0x1 << 4, | |
| 21 }; | |
| 22 typedef NSUInteger NSEventPhase; | |
| 23 | |
| 24 @interface NSEvent (LionAPI) | |
| 25 | |
| 26 - (NSEventPhase)momentumPhase; | |
| 27 - (NSEventPhase)phase; | |
| 28 | |
| 29 @end | |
| 30 | |
| 31 #endif // 10.7 | |
| 32 | |
| 33 @interface InvisibleScroller : NSScroller; | |
| 34 @end | |
| 35 | |
| 36 @implementation InvisibleScroller | |
| 37 | |
| 38 // Makes it non-interactive (and invisible) on Lion with both 10.6 and 10.7 | |
| 39 // SDKs. TODO(tapted): Find a way to make it non-interactive on Snow Leopard. | |
| 40 // TODO(tapted): Find a way to make it take up no space on Lion with a 10.6 SDK. | |
| 41 - (NSRect)rectForPart:(NSScrollerPart)aPart { | |
| 42 return NSZeroRect; | |
| 43 } | |
| 44 | |
| 45 @end | |
| 46 | |
| 47 @implementation ScrollViewWithNoScrollbars | |
| 48 | |
| 49 @synthesize delegate = delegate_; | |
| 50 | |
| 51 - (id)initWithFrame:(NSRect)frame { | |
| 52 if ((self = [super initWithFrame:frame])) { | |
| 53 [self setHasHorizontalScroller:base::mac::IsOSLionOrLater()]; | |
| 54 NSRect horizontalScrollerRect = [self bounds]; | |
| 55 horizontalScrollerRect.size.height = 0; | |
| 56 base::scoped_nsobject<InvisibleScroller> horizontalScroller( | |
| 57 [[InvisibleScroller alloc] initWithFrame:horizontalScrollerRect]); | |
| 58 [self setHorizontalScroller:horizontalScroller]; | |
| 59 } | |
| 60 return self; | |
| 61 } | |
| 62 | |
| 63 - (void)endGestureWithEvent:(NSEvent*)event { | |
| 64 [super endGestureWithEvent:event]; | |
| 65 if (!base::mac::IsOSLionOrLater()) | |
| 66 [delegate_ userScrolling:NO]; | |
| 67 } | |
| 68 | |
| 69 - (void)scrollWheel:(NSEvent*)event { | |
| 70 if ([event subtype] == NSMouseEventSubtype) { | |
| 71 // Since the scroll view has no vertical scroller, regular up and down mouse | |
| 72 // wheel events would be ignored. This maps mouse wheel events to a | |
| 73 // horizontal scroll event of one line, to turn pages. | |
| 74 BOOL downOrRight; | |
| 75 if ([event deltaX] != 0) | |
| 76 downOrRight = [event deltaX] > 0; | |
| 77 else if ([event deltaY] != 0) | |
| 78 downOrRight = [event deltaY] > 0; | |
| 79 else | |
| 80 return; | |
| 81 | |
| 82 base::ScopedCFTypeRef<CGEventRef> cgEvent(CGEventCreateScrollWheelEvent( | |
| 83 NULL, kCGScrollEventUnitLine, 2, 0, downOrRight ? 1 : -1)); | |
| 84 [super scrollWheel:[NSEvent eventWithCGEvent:cgEvent]]; | |
| 85 return; | |
| 86 } | |
| 87 | |
| 88 [super scrollWheel:event]; | |
| 89 if (![event respondsToSelector:@selector(momentumPhase)]) | |
| 90 return; | |
| 91 | |
| 92 BOOL scrollComplete = [event momentumPhase] == NSEventPhaseEnded || | |
| 93 ([event momentumPhase] == NSEventPhaseNone && | |
| 94 [event phase] == NSEventPhaseEnded); | |
| 95 | |
| 96 [delegate_ userScrolling:!scrollComplete]; | |
| 97 } | |
| 98 | |
| 99 @end | |
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Chromium Code Reviews
Issue 231883003:
[stash] 20140404-crbug-312961-mac-views-bridge-C-wholegrid
Base URL: https://chromium.googlesource.com/chromium/src.git@master