create struct to hold all the params passed around for shader::context

src/effects/SkTransparentShader.cpp

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkTransparentShader.h"
 #include "SkColorPriv.h"
 #include "SkString.h"
 
-SkShader::Context* SkTransparentShader::createContext(const SkBitmap& device,
-                                                      const SkPaint& paint,
-                                                      const SkMatrix& matrix,
-                                                      void* storage) const {
-    if (!this->validContext(device, paint, matrix)) {
+SkShader::Context* SkTransparentShader::createContext(const ContextRec& rec, void* storage) const {
+    if (!this->validContext(rec)) {
         return NULL;
     }
 
-    return SkNEW_PLACEMENT_ARGS(storage, TransparentShaderContext, (*this, device, paint, matrix));
+    return SkNEW_PLACEMENT_ARGS(storage, TransparentShaderContext, (*this, rec));
 }
 
 size_t SkTransparentShader::contextSize() const {
     return sizeof(TransparentShaderContext);
 }
 
 SkTransparentShader::TransparentShaderContext::TransparentShaderContext(
-        const SkTransparentShader& shader, const SkBitmap& device,
-        const SkPaint& paint, const SkMatrix& matrix)
-    : INHERITED(shader, device, paint, matrix)
-    , fDevice(&device) {}
+        const SkTransparentShader& shader, const ContextRec& rec)
+    : INHERITED(shader, rec)
+    , fDevice(rec.fDevice) {}
 
 SkTransparentShader::TransparentShaderContext::~TransparentShaderContext() {}
 
 uint32_t SkTransparentShader::TransparentShaderContext::getFlags() const {
     uint32_t flags = this->INHERITED::getFlags();
 
     switch (fDevice->colorType()) {
         case kRGB_565_SkColorType:
             flags |= kHasSpan16_Flag;
             if (this->getPaintAlpha() == 255)
@@ skipping 80 matching lines @@
 
 #ifndef SK_IGNORE_TO_STRING
 void SkTransparentShader::toString(SkString* str) const {
     str->append("SkTransparentShader: (");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif