1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef SkValidationUtils_DEFINED
9 #define SkValidationUtils_DEFINED
10 
11 #include "SkBitmap.h"
12 #include "SkXfermode.h"
13 
14 /** Returns true if coeff's value is in the SkXfermode::Coeff enum.
15   */
SkIsValidCoeff(SkXfermode::Coeff coeff)16 static inline bool SkIsValidCoeff(SkXfermode::Coeff coeff) {
17     return coeff >= 0 && coeff < SkXfermode::kCoeffCount;
18 }
19 
20 /** Returns true if mode's value is in the SkXfermode::Mode enum.
21   */
SkIsValidMode(SkXfermode::Mode mode)22 static inline bool SkIsValidMode(SkXfermode::Mode mode) {
23     return (mode >= 0) && (mode <= SkXfermode::kLastMode);
24 }
25 
26 /** Returns true if the rect's dimensions are between 0 and SK_MaxS32
27   */
SkIsValidIRect(const SkIRect & rect)28 static inline bool SkIsValidIRect(const SkIRect& rect) {
29     return rect.width() >= 0 && rect.height() >= 0;
30 }
31 
32 /** Returns true if the rect's dimensions are between 0 and SK_ScalarMax
33   */
SkIsValidRect(const SkRect & rect)34 static inline bool SkIsValidRect(const SkRect& rect) {
35     return (rect.fLeft <= rect.fRight) &&
36            (rect.fTop <= rect.fBottom) &&
37            SkScalarIsFinite(rect.width()) &&
38            SkScalarIsFinite(rect.height());
39 }
40 
41 #endif
42