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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/scoped_cftyperef.h" | |
| 8 #include "base/mac/scoped_nsobject.h" | |
| 9 #include "base/mac/sdk_forward_declarations.h" | |
| 10 | |
| 11 @interface InvisibleScroller : NSScroller; | |
| 12 @end | |
| 13 | |
| 14 @implementation InvisibleScroller | |
| 15 | |
| 16 // Makes it non-interactive (and invisible) on Lion with both 10.6 and 10.7 | |
| 17 // SDKs. TODO(tapted): Find a way to make it non-interactive on Snow Leopard. | |
| 18 // TODO(tapted): Find a way to make it take up no space on Lion with a 10.6 SDK. | |
| 19 - (NSRect)rectForPart:(NSScrollerPart)aPart { | |
| 20 return NSZeroRect; | |
| 21 } | |
| 22 | |
| 23 @end | |
| 24 | |
| 25 @implementation ScrollViewWithNoScrollbars | |
| 26 | |
| 27 @synthesize delegate = delegate_; | |
| 28 | |
| 29 - (id)initWithFrame:(NSRect)frame { | |
| 30 if ((self = [super initWithFrame:frame])) { | |
| 31 [self setHasHorizontalScroller:YES]; | |
| 32 NSRect horizontalScrollerRect = [self bounds]; | |
| 33 horizontalScrollerRect.size.height = 0; | |
| 34 base::scoped_nsobject<InvisibleScroller> horizontalScroller( | |
| 35 [[InvisibleScroller alloc] initWithFrame:horizontalScrollerRect]); | |
| 36 [self setHorizontalScroller:horizontalScroller]; | |
| 37 } | |
| 38 return self; | |
| 39 } | |
| 40 | |
| 41 - (void)scrollWheel:(NSEvent*)event { | |
| 42 if ([event subtype] == NSMouseEventSubtype) { | |
| 43 // Since the scroll view has no vertical scroller, regular up and down mouse | |
| 44 // wheel events would be ignored. This maps mouse wheel events to a | |
| 45 // horizontal scroll event of one line, to turn pages. | |
| 46 BOOL downOrRight; | |
| 47 if ([event deltaX] != 0) | |
| 48 downOrRight = [event deltaX] > 0; | |
| 49 else if ([event deltaY] != 0) | |
| 50 downOrRight = [event deltaY] > 0; | |
| 51 else | |
| 52 return; | |
| 53 | |
| 54 base::ScopedCFTypeRef<CGEventRef> cgEvent(CGEventCreateScrollWheelEvent( | |
| 55 NULL, kCGScrollEventUnitLine, 2, 0, downOrRight ? 1 : -1)); | |
| 56 [super scrollWheel:[NSEvent eventWithCGEvent:cgEvent]]; | |
| 57 return; | |
| 58 } | |
| 59 | |
| 60 [super scrollWheel:event]; | |
| 61 if (![event respondsToSelector:@selector(momentumPhase)]) | |
| 62 return; | |
| 63 | |
| 64 BOOL scrollComplete = [event momentumPhase] == NSEventPhaseEnded || | |
| 65 ([event momentumPhase] == NSEventPhaseNone && | |
| 66 [event phase] == NSEventPhaseEnded); | |
| 67 | |
| 68 [delegate_ userScrolling:!scrollComplete]; | |
| 69 } | |
| 70 | |
| 71 @end | |
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Chromium Code Reviews
Issue 2131463002:
Purge the App Launcher code from Mac (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master