Implemented transparent gradients

src/pdf/SkPDFUtils.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkData.h"
 #include "SkGeometry.h"
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkPDFUtils.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkPDFTypes.h"
 
+//static
+SkPDFArray* SkPDFUtils::RectToArray(const SkRect& rect) {
+    SkPDFArray* result = new SkPDFArray();
+    result->reserve(4);
+    result->appendScalar(rect.fLeft);
+    result->appendScalar(rect.fTop);
+    result->appendScalar(rect.fRight);
+    result->appendScalar(rect.fBottom);
+    return result;
+}
+
 // static
 SkPDFArray* SkPDFUtils::MatrixToArray(const SkMatrix& matrix) {
     SkScalar values[6];
     if (!matrix.asAffine(values)) {
         SkMatrix::SetAffineIdentity(values);
     }
 
     SkPDFArray* result = new SkPDFArray;
     result->reserve(6);
     for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) {
         result->appendScalar(values[i]);
     }
     return result;
 }
 
 // static
 void SkPDFUtils::AppendTransform(const SkMatrix& matrix, SkWStream* content) {
     SkScalar values[6];
     if (!matrix.asAffine(values)) {
         SkMatrix::SetAffineIdentity(values);
     }
     for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) {
         SkPDFScalar::Append(values[i], content);
         content->writeText(" ");
     }
     content->writeText("cm\n");
 }
 
+//static
+SkPDFArray* SkPDFUtils::CreateFullProcSetsArray() {
+    const char procs[][7] = {"PDF", "Text", "ImageB", "ImageC", "ImageI"};
+    SkPDFArray* procSets = new SkPDFArray();
+
+    procSets->reserve(SK_ARRAY_COUNT(procs));
+    for (size_t i = 0; i < SK_ARRAY_COUNT(procs); i++) {
+        procSets->appendName(procs[i]);
+    }
+
+    return procSets;
+}
+
 // static
 void SkPDFUtils::MoveTo(SkScalar x, SkScalar y, SkWStream* content) {
     SkPDFScalar::Append(x, content);
     content->writeText(" ");
     SkPDFScalar::Append(y, content);
     content->writeText(" m\n");
 }
 
 // static
 void SkPDFUtils::AppendLine(SkScalar x, SkScalar y, SkWStream* content) {
@@ skipping 153 matching lines @@
     content->writeDecAsText(objectIndex);
     content->writeText(" Do\n");
 }
 
 // static
 void SkPDFUtils::ApplyGraphicState(int objectIndex, SkWStream* content) {
     content->writeText("/G");
     content->writeDecAsText(objectIndex);
     content->writeText(" gs\n");
 }