src/base/mac/sdk_forward_declarations.h

   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.
   4
   5 // This file contains forward declarations for items in later SDKs than the
   6 // default one with which Chromium is built (currently 10.6).
   7 // If you call any function from this header, be sure to check at runtime for
   8 // respondsToSelector: before calling these functions (else your code will crash
   9 // on older OS X versions that chrome still supports).
  10
  11 #ifndef BASE_MAC_SDK_FORWARD_DECLARATIONS_H_
  12 #define BASE_MAC_SDK_FORWARD_DECLARATIONS_H_
  13
  14 #import <AppKit/AppKit.h>
  15
  16 #if !defined(MAC_OS_X_VERSION_10_7) || \
  17     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
  18 enum {
  19   NSEventPhaseNone        = 0, // event not associated with a phase.
  20   NSEventPhaseBegan       = 0x1 << 0,
  21   NSEventPhaseStationary  = 0x1 << 1,
  22   NSEventPhaseChanged     = 0x1 << 2,
  23   NSEventPhaseEnded       = 0x1 << 3,
  24   NSEventPhaseCancelled   = 0x1 << 4,
  25 };
  26 typedef NSUInteger NSEventPhase;
  27
  28 enum {
  29   NSEventSwipeTrackingLockDirection = 0x1 << 0,
  30   NSEventSwipeTrackingClampGestureAmount = 0x1 << 1,
  31 };
  32 typedef NSUInteger NSEventSwipeTrackingOptions;
  33
  34 @interface NSEvent (LionSDK)
  35 + (BOOL)isSwipeTrackingFromScrollEventsEnabled;
  36
  37 - (NSEventPhase)phase;
  38 - (CGFloat)scrollingDeltaX;
  39 - (CGFloat)scrollingDeltaY;
  40 - (void)trackSwipeEventWithOptions:(NSEventSwipeTrackingOptions)options
  41           dampenAmountThresholdMin:(CGFloat)minDampenThreshold
  42                                max:(CGFloat)maxDampenThreshold
  43                       usingHandler:(void (^)(CGFloat gestureAmount,
  44                                              NSEventPhase phase,
  45                                              BOOL isComplete,
  46                                              BOOL *stop))trackingHandler;
  47
  48 - (BOOL)isDirectionInvertedFromDevice;
  49
  50 @end
  51
  52 @interface CALayer (LionAPI)
  53 - (CGFloat)contentsScale;
  54 - (void)setContentsScale:(CGFloat)contentsScale;
  55 @end
  56
  57 @interface NSScreen (LionSDK)
  58 - (CGFloat)backingScaleFactor;
  59 - (NSRect)convertRectToBacking:(NSRect)aRect;
  60 @end
  61
  62 @interface NSWindow (LionSDK)
  63 - (CGFloat)backingScaleFactor;
  64 @end
  65 #endif  // MAC_OS_X_VERSION_10_7
  66
  67 #endif  // BASE_MAC_SDK_FORWARD_DECLARATIONS_H_