1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/pdf/SkPDFDeviceFlattener.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,155 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#include "SkPDFDeviceFlattener.h"
1.12 +
1.13 +#include "SkDraw.h"
1.14 +
1.15 +static SkISize SkSizeToISize(const SkSize& size) {
1.16 + return SkISize::Make(SkScalarRoundToInt(size.width()), SkScalarRoundToInt(size.height()));
1.17 +}
1.18 +
1.19 +SkPDFDeviceFlattener::SkPDFDeviceFlattener(const SkSize& pageSize, const SkRect* trimBox)
1.20 + : SkPDFDevice(SkSizeToISize(pageSize),
1.21 + SkSizeToISize(pageSize),
1.22 + SkMatrix::I()) {
1.23 + // TODO(edisonn): store the trimbox on emit.
1.24 +}
1.25 +
1.26 +SkPDFDeviceFlattener::~SkPDFDeviceFlattener() {
1.27 +}
1.28 +
1.29 +static void flattenPaint(const SkDraw& d, SkPaint* paint) {
1.30 + if (paint->getShader()) {
1.31 + SkMatrix local = paint->getShader()->getLocalMatrix();
1.32 + local.preConcat(*d.fMatrix);
1.33 + paint->getShader()->setLocalMatrix(local);
1.34 + }
1.35 +}
1.36 +
1.37 +void SkPDFDeviceFlattener::drawPoints(const SkDraw& d, SkCanvas::PointMode mode,
1.38 + size_t count, const SkPoint points[],
1.39 + const SkPaint& paint) {
1.40 + if (!mustFlatten(d)) {
1.41 + INHERITED::drawPoints(d, mode, count, points, paint);
1.42 + return;
1.43 + }
1.44 +
1.45 + SkPaint paintFlatten(paint);
1.46 + flattenPaint(d, &paintFlatten);
1.47 +
1.48 + SkPoint* flattenedPoints = SkNEW_ARRAY(SkPoint, count);
1.49 + d.fMatrix->mapPoints(flattenedPoints, points, SkToS32(count));
1.50 + SkDraw draw(d);
1.51 + SkMatrix identity = SkMatrix::I();
1.52 + draw.fMatrix = &identity;
1.53 + INHERITED::drawPoints(draw, mode, count, flattenedPoints, paintFlatten);
1.54 + SkDELETE_ARRAY(flattenedPoints);
1.55 +}
1.56 +
1.57 +void SkPDFDeviceFlattener::drawRect(const SkDraw& d, const SkRect& r, const SkPaint& paint) {
1.58 + if (!mustFlatten(d)) {
1.59 + INHERITED::drawRect(d, r, paint);
1.60 + return;
1.61 + }
1.62 +
1.63 + SkPath path;
1.64 + path.addRect(r);
1.65 + path.transform(*d.fMatrix);
1.66 + SkDraw draw(d);
1.67 + SkMatrix matrix = SkMatrix::I();
1.68 + draw.fMatrix = &matrix;
1.69 +
1.70 + SkPaint paintFlatten(paint);
1.71 + flattenPaint(d, &paintFlatten);
1.72 +
1.73 + INHERITED::drawPath(draw, path, paintFlatten, NULL, true);
1.74 +}
1.75 +
1.76 +void SkPDFDeviceFlattener::drawPath(const SkDraw& d, const SkPath& origPath,
1.77 + const SkPaint& paint, const SkMatrix* prePathMatrix,
1.78 + bool pathIsMutable) {
1.79 + if (!mustFlatten(d) && !(prePathMatrix && prePathMatrix->hasPerspective())) {
1.80 + INHERITED::drawPath(d, origPath, paint, prePathMatrix, pathIsMutable);
1.81 + return;
1.82 + }
1.83 +
1.84 + SkPath* pathPtr = (SkPath*)&origPath;
1.85 + SkPath tmpPath;
1.86 +
1.87 + if (!pathIsMutable) {
1.88 + tmpPath = origPath;
1.89 + pathPtr = &tmpPath;
1.90 + }
1.91 +
1.92 + if (prePathMatrix) {
1.93 + pathPtr->transform(*prePathMatrix);
1.94 + }
1.95 +
1.96 + SkPaint paintFlatten(paint);
1.97 + flattenPaint(d, &paintFlatten);
1.98 +
1.99 + bool fill = paintFlatten.getFillPath(*pathPtr, &tmpPath);
1.100 + SkDEBUGCODE(pathPtr = (SkPath*)0x12345678); // Don't use pathPtr after this point.
1.101 +
1.102 + paintFlatten.setPathEffect(NULL);
1.103 + if (fill) {
1.104 + paintFlatten.setStyle(SkPaint::kFill_Style);
1.105 + } else {
1.106 + paintFlatten.setStyle(SkPaint::kStroke_Style);
1.107 + paintFlatten.setStrokeWidth(0);
1.108 + }
1.109 +
1.110 + tmpPath.transform(*d.fMatrix);
1.111 +
1.112 + SkDraw draw(d);
1.113 + SkMatrix matrix = SkMatrix::I();
1.114 + draw.fMatrix = &matrix;
1.115 +
1.116 + INHERITED::drawPath(draw, tmpPath, paintFlatten, NULL, true);
1.117 +}
1.118 +
1.119 +void SkPDFDeviceFlattener::drawText(const SkDraw& d, const void* text, size_t len,
1.120 + SkScalar x, SkScalar y, const SkPaint& paint) {
1.121 + if (mustPathText(d, paint)) {
1.122 + d.drawText_asPaths((const char*)text, len, x, y, paint);
1.123 + return;
1.124 + }
1.125 +
1.126 + INHERITED::drawText(d, text, len, x, y, paint);
1.127 +}
1.128 +
1.129 +void SkPDFDeviceFlattener::drawPosText(const SkDraw& d, const void* text, size_t len,
1.130 + const SkScalar pos[], SkScalar constY,
1.131 + int scalarsPerPos, const SkPaint& paint) {
1.132 + if (mustPathText(d, paint)) {
1.133 + d.drawPosText_asPaths((const char*)text, len, pos, constY, scalarsPerPos, paint);
1.134 + return;
1.135 + }
1.136 + INHERITED::drawPosText(d, text, len, pos, constY,scalarsPerPos, paint);
1.137 +}
1.138 +
1.139 +void SkPDFDeviceFlattener::drawTextOnPath(const SkDraw& d, const void* text, size_t len,
1.140 + const SkPath& path, const SkMatrix* matrix,
1.141 + const SkPaint& paint) {
1.142 + if (mustPathText(d, paint) || (matrix && matrix->hasPerspective())) {
1.143 + d.drawTextOnPath((const char*)text, len, path, matrix, paint);
1.144 + return;
1.145 + }
1.146 + INHERITED::drawTextOnPath(d, text, len, path, matrix, paint);
1.147 +}
1.148 +
1.149 +bool SkPDFDeviceFlattener::mustFlatten(const SkDraw& d) const {
1.150 + // TODO(edisonn): testability, add flag to force return true.
1.151 + return d.fMatrix->hasPerspective();
1.152 +}
1.153 +
1.154 +bool SkPDFDeviceFlattener::mustPathText(const SkDraw& d, const SkPaint&) {
1.155 + // TODO(edisonn): testability, add flag to force return true.
1.156 + // TODO(edisonn): TBD: How to flatten MaskFilter.
1.157 + return d.fMatrix->hasPerspective();
1.158 +}
