SkBlurMaskFilter.h revision a2ca41e3afdd8fad5e0e924dec029f33918e0a67
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 28a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 48a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 78a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 88a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#ifndef SkBlurMaskFilter_DEFINED 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#define SkBlurMaskFilter_DEFINED 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com// we include this since our callers will need to at least be able to ref/unref 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkMaskFilter.h" 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkScalar.h" 168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 178c3ff17e2cab6f7c798b9f8ff4515c4a3d3fd9d1bsalomon@google.comclass SK_API SkBlurMaskFilter { 188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum BlurStyle { 208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kNormal_BlurStyle, //!< fuzzy inside and outside 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kSolid_BlurStyle, //!< solid inside, fuzzy outside 228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kOuter_BlurStyle, //!< nothing inside, fuzzy outside 238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kInner_BlurStyle, //!< fuzzy inside, nothing outside 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kBlurStyleCount 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 28038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org enum BlurFlags { 29038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org kNone_BlurFlag = 0x00, 30038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org /** The blur layer's radius is not affected by transforms */ 314868e6b221a4a98e40f977851af5fcf09631ea15senorblanco@chromium.org kIgnoreTransform_BlurFlag = 0x01, 324868e6b221a4a98e40f977851af5fcf09631ea15senorblanco@chromium.org /** Use a smother, higher qulity blur algorithm */ 334868e6b221a4a98e40f977851af5fcf09631ea15senorblanco@chromium.org kHighQuality_BlurFlag = 0x02, 34038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org /** mask for all blur flags */ 354868e6b221a4a98e40f977851af5fcf09631ea15senorblanco@chromium.org kAll_BlurFlag = 0x03 36038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org }; 37038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org 388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Create a blur maskfilter. 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param radius The radius to extend the blur from the original mask. Must be > 0. 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param style The BlurStyle to use 41038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org @param flags Flags to use - defaults to none 428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The new blur maskfilter 438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 44038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org static SkMaskFilter* Create(SkScalar radius, BlurStyle style, 45038aff623d9fd47946cd31685f74cf473f7c84f0senorblanco@chromium.org uint32_t flags = kNone_BlurFlag); 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Create an emboss maskfilter 488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param direction array of 3 scalars [x, y, z] specifying the direction of the light source 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param ambient 0...1 amount of ambient light 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param specular coefficient for specular highlights (e.g. 8) 518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param blurRadius amount to blur before applying lighting (e.g. 3) 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the emboss maskfilter 538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com static SkMaskFilter* CreateEmboss( const SkScalar direction[3], 558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar ambient, SkScalar specular, 568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar blurRadius); 578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 58a2ca41e3afdd8fad5e0e924dec029f33918e0a67djsollen@google.com SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() 598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkBlurMaskFilter(); // can't be instantiated 618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#endif 648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 65