gfx/skia/trunk/include/core/SkLineClipper.h@129ffea94266 (annotated)
gfx/skia/trunk/include/core/SkLineClipper.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2011 Google Inc. |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | #ifndef SkLineClipper_DEFINED |
| michael@0 | 9 | #define SkLineClipper_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "SkRect.h" |
| michael@0 | 12 | #include "SkPoint.h" |
| michael@0 | 13 | |
| michael@0 | 14 | class SkLineClipper { |
| michael@0 | 15 | public: |
| michael@0 | 16 | enum { |
| michael@0 | 17 | kMaxPoints = 4, |
| michael@0 | 18 | kMaxClippedLineSegments = kMaxPoints - 1 |
| michael@0 | 19 | }; |
| michael@0 | 20 | |
| michael@0 | 21 | /* Clip the line pts[0]...pts[1] against clip, ignoring segments that |
| michael@0 | 22 | lie completely above or below the clip. For portions to the left or |
| michael@0 | 23 | right, turn those into vertical line segments that are aligned to the |
| michael@0 | 24 | edge of the clip. |
| michael@0 | 25 | |
| michael@0 | 26 | Return the number of line segments that result, and store the end-points |
| michael@0 | 27 | of those segments sequentially in lines as follows: |
| michael@0 | 28 | 1st segment: lines[0]..lines[1] |
| michael@0 | 29 | 2nd segment: lines[1]..lines[2] |
| michael@0 | 30 | 3rd segment: lines[2]..lines[3] |
| michael@0 | 31 | */ |
| michael@0 | 32 | static int ClipLine(const SkPoint pts[2], const SkRect& clip, |
| michael@0 | 33 | SkPoint lines[kMaxPoints]); |
| michael@0 | 34 | |
| michael@0 | 35 | /* Intersect the line segment against the rect. If there is a non-empty |
| michael@0 | 36 | resulting segment, return true and set dst[] to that segment. If not, |
| michael@0 | 37 | return false and ignore dst[]. |
| michael@0 | 38 | |
| michael@0 | 39 | ClipLine is specialized for scan-conversion, as it adds vertical |
| michael@0 | 40 | segments on the sides to show where the line extended beyond the |
| michael@0 | 41 | left or right sides. IntersectLine does not. |
| michael@0 | 42 | */ |
| michael@0 | 43 | static bool IntersectLine(const SkPoint src[2], const SkRect& clip, |
| michael@0 | 44 | SkPoint dst[2]); |
| michael@0 | 45 | }; |
| michael@0 | 46 | |
| michael@0 | 47 | #endif |
