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comparison base/ZoomConstraint.h @ 1429:48e9f538e6e9

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Untabify
author Chris Cannam
date Thu, 01 Mar 2018 18:02:22 +0000
parents 12f3b48668d4
children 710e6250a401 a7485c1bdba5
comparison
equal deleted inserted replaced
1428:87ae75da6527 1429:48e9f538e6e9
31 { 31 {
32 public: 32 public:
33 virtual ~ZoomConstraint() { } 33 virtual ~ZoomConstraint() { }
34 34
35 enum RoundingDirection { 35 enum RoundingDirection {
36 RoundDown, 36 RoundDown,
37 RoundUp, 37 RoundUp,
38 RoundNearest 38 RoundNearest
39 }; 39 };
40 40
41 /** 41 /**
42 * Given the "ideal" block size (frames per pixel) for a given 42 * Given the "ideal" block size (frames per pixel) for a given
43 * zoom level, return the nearest viable block size for this 43 * zoom level, return the nearest viable block size for this
47 * requested but the underlying model only supports value 47 * requested but the underlying model only supports value
48 * summaries at powers-of-two block sizes, return 1024 or 2048 48 * summaries at powers-of-two block sizes, return 1024 or 2048
49 * depending on the rounding direction supplied. 49 * depending on the rounding direction supplied.
50 */ 50 */
51 virtual int getNearestBlockSize(int requestedBlockSize, 51 virtual int getNearestBlockSize(int requestedBlockSize,
52 RoundingDirection = RoundNearest) 52 RoundingDirection = RoundNearest)
53 const 53 const
54 { 54 {
55 if (requestedBlockSize > getMaxZoomLevel()) return getMaxZoomLevel(); 55 if (requestedBlockSize > getMaxZoomLevel()) return getMaxZoomLevel();
56 else return requestedBlockSize; 56 else return requestedBlockSize;
57 } 57 }
58 58
59 /** 59 /**
60 * Return the maximum zoom level within range for this constraint. 60 * Return the maximum zoom level within range for this constraint.
61 * This is quite large -- individual views will probably want to 61 * This is quite large -- individual views will probably want to