| |
| /* |
| * Copyright 2010 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 "SkPDFFormXObject.h" |
| |
| #include "SkMatrix.h" |
| #include "SkPDFCatalog.h" |
| #include "SkPDFDevice.h" |
| #include "SkPDFResourceDict.h" |
| #include "SkPDFUtils.h" |
| #include "SkStream.h" |
| #include "SkTypes.h" |
| |
| SkPDFFormXObject::SkPDFFormXObject(SkPDFDevice* device) { |
| // We don't want to keep around device because we'd have two copies |
| // of content, so reference or copy everything we need (content and |
| // resources). |
| SkPDFResourceDict* resourceDict = device->getResourceDict(); |
| |
| SkAutoTDelete<SkStream> content(device->content()); |
| setData(content.get()); |
| |
| SkAutoTUnref<SkPDFArray> bboxArray(device->copyMediaBox()); |
| init(NULL, resourceDict, bboxArray); |
| |
| // We invert the initial transform and apply that to the xobject so that |
| // it doesn't get applied twice. We can't just undo it because it's |
| // embedded in things like shaders and images. |
| if (!device->initialTransform().isIdentity()) { |
| SkMatrix inverse; |
| if (!device->initialTransform().invert(&inverse)) { |
| // The initial transform should be invertible. |
| SkASSERT(false); |
| inverse.reset(); |
| } |
| insert("Matrix", SkPDFUtils::MatrixToArray(inverse))->unref(); |
| } |
| } |
| |
| /** |
| * Creates a FormXObject from a content stream and associated resources. |
| */ |
| SkPDFFormXObject::SkPDFFormXObject(SkStream* content, SkRect bbox, |
| SkPDFResourceDict* resourceDict) { |
| setData(content); |
| |
| SkAutoTUnref<SkPDFArray> bboxArray(SkPDFUtils::RectToArray(bbox)); |
| init("DeviceRGB", resourceDict, bboxArray); |
| } |
| |
| /** |
| * Common initialization code. |
| * Note that bbox is unreferenced here, so calling code does not need worry. |
| */ |
| void SkPDFFormXObject::init(const char* colorSpace, |
| SkPDFDict* resourceDict, SkPDFArray* bbox) { |
| insertName("Type", "XObject"); |
| insertName("Subtype", "Form"); |
| insert("Resources", resourceDict); |
| insert("BBox", bbox); |
| |
| // Right now SkPDFFormXObject is only used for saveLayer, which implies |
| // isolated blending. Do this conditionally if that changes. |
| SkAutoTUnref<SkPDFDict> group(new SkPDFDict("Group")); |
| group->insertName("S", "Transparency"); |
| |
| if (colorSpace != NULL) { |
| group->insertName("CS", colorSpace); |
| } |
| group->insert("I", new SkPDFBool(true))->unref(); // Isolated. |
| insert("Group", group.get()); |
| } |
| |
| SkPDFFormXObject::~SkPDFFormXObject() {} |