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comparison: gfx/skia/trunk/src/pdf/SkPDFFormXObject.cpp
gfx/skia/trunk/src/pdf/SkPDFFormXObject.cpp
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| -1:000000000000 | 0:c4eaa96b9c94 |
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| 1 | |
| 2 /* | |
| 3 * Copyright 2010 The Android Open Source Project | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #include "SkPDFFormXObject.h" | |
| 11 | |
| 12 #include "SkMatrix.h" | |
| 13 #include "SkPDFCatalog.h" | |
| 14 #include "SkPDFDevice.h" | |
| 15 #include "SkPDFResourceDict.h" | |
| 16 #include "SkPDFUtils.h" | |
| 17 #include "SkStream.h" | |
| 18 #include "SkTypes.h" | |
| 19 | |
| 20 SkPDFFormXObject::SkPDFFormXObject(SkPDFDevice* device) { | |
| 21 // We don't want to keep around device because we'd have two copies | |
| 22 // of content, so reference or copy everything we need (content and | |
| 23 // resources). | |
| 24 SkTSet<SkPDFObject*> emptySet; | |
| 25 SkPDFResourceDict* resourceDict = device->getResourceDict(); | |
| 26 resourceDict->getReferencedResources(emptySet, &fResources, false); | |
| 27 | |
| 28 SkAutoTUnref<SkStream> content(device->content()); | |
| 29 setData(content.get()); | |
| 30 | |
| 31 SkAutoTUnref<SkPDFArray> bboxArray(device->copyMediaBox()); | |
| 32 init(NULL, resourceDict, bboxArray); | |
| 33 | |
| 34 // We invert the initial transform and apply that to the xobject so that | |
| 35 // it doesn't get applied twice. We can't just undo it because it's | |
| 36 // embedded in things like shaders and images. | |
| 37 if (!device->initialTransform().isIdentity()) { | |
| 38 SkMatrix inverse; | |
| 39 if (!device->initialTransform().invert(&inverse)) { | |
| 40 // The initial transform should be invertible. | |
| 41 SkASSERT(false); | |
| 42 inverse.reset(); | |
| 43 } | |
| 44 insert("Matrix", SkPDFUtils::MatrixToArray(inverse))->unref(); | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 /** | |
| 49 * Creates a FormXObject from a content stream and associated resources. | |
| 50 */ | |
| 51 SkPDFFormXObject::SkPDFFormXObject(SkStream* content, SkRect bbox, | |
| 52 SkPDFResourceDict* resourceDict) { | |
| 53 SkTSet<SkPDFObject*> emptySet; | |
| 54 resourceDict->getReferencedResources(emptySet, &fResources, false); | |
| 55 | |
| 56 setData(content); | |
| 57 | |
| 58 SkAutoTUnref<SkPDFArray> bboxArray(SkPDFUtils::RectToArray(bbox)); | |
| 59 init("DeviceRGB", resourceDict, bboxArray); | |
| 60 } | |
| 61 | |
| 62 /** | |
| 63 * Common initialization code. | |
| 64 * Note that bbox is unreferenced here, so calling code does not need worry. | |
| 65 */ | |
| 66 void SkPDFFormXObject::init(const char* colorSpace, | |
| 67 SkPDFDict* resourceDict, SkPDFArray* bbox) { | |
| 68 insertName("Type", "XObject"); | |
| 69 insertName("Subtype", "Form"); | |
| 70 insert("Resources", resourceDict); | |
| 71 insert("BBox", bbox); | |
| 72 | |
| 73 // Right now SkPDFFormXObject is only used for saveLayer, which implies | |
| 74 // isolated blending. Do this conditionally if that changes. | |
| 75 SkAutoTUnref<SkPDFDict> group(new SkPDFDict("Group")); | |
| 76 group->insertName("S", "Transparency"); | |
| 77 | |
| 78 if (colorSpace != NULL) { | |
| 79 group->insertName("CS", colorSpace); | |
| 80 } | |
| 81 group->insert("I", new SkPDFBool(true))->unref(); // Isolated. | |
| 82 insert("Group", group.get()); | |
| 83 } | |
| 84 | |
| 85 SkPDFFormXObject::~SkPDFFormXObject() { | |
| 86 fResources.unrefAll(); | |
| 87 } | |
| 88 | |
| 89 void SkPDFFormXObject::getResources( | |
| 90 const SkTSet<SkPDFObject*>& knownResourceObjects, | |
| 91 SkTSet<SkPDFObject*>* newResourceObjects) { | |
| 92 GetResourcesHelper(&fResources.toArray(), | |
| 93 knownResourceObjects, | |
| 94 newResourceObjects); | |
| 95 } |
