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gerrit-public.fairphone.software / platform / external / skqp / 96e96dfd1edea2ceaf0311fce71cddae50175086 / . / src / device / xps / SkXPSDevice.cpp
blob: eaf61effa30e4deb89b29f901452aadf6dfb9ef9 [file] [log] [blame]
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef UNICODE
#define UNICODE
#endif
#ifndef _UNICODE
#define _UNICODE
#endif
#include "SkTypes.h"
#include <ObjBase.h>
#include <XpsObjectModel.h>
#include <T2EmbApi.h>
#include <FontSub.h>
#include "SkColor.h"
#include "SkConstexprMath.h"
#include "SkData.h"
#include "SkDraw.h"
#include "SkDrawProcs.h"
#include "SkFontHost.h"
#include "SkGlyphCache.h"
#include "SkHRESULT.h"
#include "SkImageEncoder.h"
#include "SkIStream.h"
#include "SkMaskFilter.h"
#include "SkPaint.h"
#include "SkPoint.h"
#include "SkRasterizer.h"
#include "SkShader.h"
#include "SkSize.h"
#include "SkStream.h"
#include "SkTDArray.h"
#include "SkTLazy.h"
#include "SkTScopedComPtr.h"
#include "SkUtils.h"
#include "SkXPSDevice.h"
//Windows defines a FLOAT type,
//make it clear when converting a scalar that this is what is wanted.
#define SkScalarToFLOAT(n) SkScalarToFloat(n)
//Dummy representation of a GUID from create_id.
#define L_GUID_ID L"XXXXXXXXsXXXXsXXXXsXXXXsXXXXXXXXXXXX"
//Length of GUID representation from create_id, including NULL terminator.
#define GUID_ID_LEN SK_ARRAY_COUNT(L_GUID_ID)
/**
Formats a GUID and places it into buffer.
buffer should have space for at least GUID_ID_LEN wide characters.
The string will always be wchar null terminated.
XXXXXXXXsXXXXsXXXXsXXXXsXXXXXXXXXXXX0
@return -1 if there was an error, > 0 if success.
*/
static int format_guid(const GUID& guid,
wchar_t* buffer, size_t bufferSize,
wchar_t sep = '-') {
SkASSERT(bufferSize >= GUID_ID_LEN);
return swprintf_s(buffer,
bufferSize,
L"%08lX%c%04X%c%04X%c%02X%02X%c%02X%02X%02X%02X%02X%02X",
guid.Data1,
sep,
guid.Data2,
sep,
guid.Data3,
sep,
guid.Data4[0],
guid.Data4[1],
sep,
guid.Data4[2],
guid.Data4[3],
guid.Data4[4],
guid.Data4[5],
guid.Data4[6],
guid.Data4[7]);
}
/**
Creates a GUID based id and places it into buffer.
buffer should have space for at least GUID_ID_LEN wide characters.
The string will always be wchar null terminated.
XXXXXXXXsXXXXsXXXXsXXXXsXXXXXXXXXXXX0
The string may begin with a digit,
and so may not be suitable as a bare resource key.
*/
static HRESULT create_id(wchar_t* buffer, size_t bufferSize,
wchar_t sep = '-') {
GUID guid = {};
HRM(CoCreateGuid(&guid), "Could not create GUID for id.");
if (format_guid(guid, buffer, bufferSize, sep) == -1) {
HRM(E_UNEXPECTED, "Could not format GUID into id.");
}
return S_OK;
}
static SkBitmap make_fake_bitmap(int width, int height) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kNo_Config, width, height);
return bitmap;
}
SkXPSDevice::SkXPSDevice()
: SkDevice(make_fake_bitmap(10000, 10000))
, fCurrentPage(0) {
}
SkXPSDevice::~SkXPSDevice() {
}
SkXPSDevice::TypefaceUse::TypefaceUse()
: typefaceId(0xffffffff)
, fontData(NULL)
, xpsFont(NULL)
, glyphsUsed(NULL) {
}
SkXPSDevice::TypefaceUse::~TypefaceUse() {
//xpsFont owns fontData ref
this->xpsFont->Release();
delete this->glyphsUsed;
}
bool SkXPSDevice::beginPortfolio(SkWStream* outputStream) {
if (!this->fAutoCo.succeeded()) return false;
//Create XPS Factory.
HRBM(CoCreateInstance(
CLSID_XpsOMObjectFactory,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&this->fXpsFactory)),
"Could not create XPS factory.");
HRBM(SkWIStream::CreateFromSkWStream(outputStream, &this->fOutputStream),
"Could not convert SkStream to IStream.");
return true;
}
bool SkXPSDevice::beginSheet(
const SkVector& unitsPerMeter,
const SkVector& pixelsPerMeter,
const SkSize& trimSize,
const SkRect* mediaBox,
const SkRect* bleedBox,
const SkRect* artBox,
const SkRect* cropBox) {
++this->fCurrentPage;
//For simplicity, just write everything out in geometry units,
//then have a base canvas do the scale to physical units.
this->fCurrentCanvasSize = trimSize;
this->fCurrentUnitsPerMeter = unitsPerMeter;
this->fCurrentPixelsPerMeter = pixelsPerMeter;
this->fCurrentXpsCanvas.reset();
HRBM(this->fXpsFactory->CreateCanvas(&this->fCurrentXpsCanvas),
"Could not create base canvas.");
return true;
}
HRESULT SkXPSDevice::createXpsThumbnail(IXpsOMPage* page,
const unsigned int pageNum,
IXpsOMImageResource** image) {
SkTScopedComPtr<IXpsOMThumbnailGenerator> thumbnailGenerator;
HRM(CoCreateInstance(
CLSID_XpsOMThumbnailGenerator,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&thumbnailGenerator)),
"Could not create thumbnail generator.");
SkTScopedComPtr<IOpcPartUri> partUri;
static const size_t size = SK_MAX(
SK_ARRAY_COUNT(L"/Documents/1/Metadata/.png") + SK_DIGITS_IN(pageNum),
SK_ARRAY_COUNT(L"/Metadata/" L_GUID_ID L".png")
);
wchar_t buffer[size];
if (pageNum > 0) {
swprintf_s(buffer, size, L"/Documents/1/Metadata/%u.png", pageNum);
} else {
wchar_t id[GUID_ID_LEN];
HR(create_id(id, GUID_ID_LEN));
swprintf_s(buffer, size, L"/Metadata/%s.png", id);
}
HRM(this->fXpsFactory->CreatePartUri(buffer, &partUri),
"Could not create thumbnail part uri.");
HRM(thumbnailGenerator->GenerateThumbnail(page,
XPS_IMAGE_TYPE_PNG,
XPS_THUMBNAIL_SIZE_LARGE,
partUri.get(),
image),
"Could not generate thumbnail.");
return S_OK;
}
HRESULT SkXPSDevice::createXpsPage(const XPS_SIZE& pageSize,
IXpsOMPage** page) {
static const size_t size = SK_ARRAY_COUNT(L"/Documents/1/Pages/.fpage")
+ SK_DIGITS_IN(fCurrentPage);
wchar_t buffer[size];
swprintf_s(buffer, size, L"/Documents/1/Pages/%u.fpage",
this->fCurrentPage);
SkTScopedComPtr<IOpcPartUri> partUri;
HRM(this->fXpsFactory->CreatePartUri(buffer, &partUri),
"Could not create page part uri.");
//If the language is unknown, use "und" (XPS Spec 2.3.5.1).
HRM(this->fXpsFactory->CreatePage(&pageSize,
L"und",
partUri.get(),
page),
"Could not create page.");
return S_OK;
}
HRESULT SkXPSDevice::initXpsDocumentWriter(IXpsOMImageResource* image) {
//Create package writer.
{
SkTScopedComPtr<IOpcPartUri> partUri;
HRM(this->fXpsFactory->CreatePartUri(L"/FixedDocumentSequence.fdseq",
&partUri),
"Could not create document sequence part uri.");
HRM(this->fXpsFactory->CreatePackageWriterOnStream(
this->fOutputStream.get(),
TRUE,
XPS_INTERLEAVING_OFF, //XPS_INTERLEAVING_ON,
partUri.get(),
NULL,
image,
NULL,
NULL,
&this->fPackageWriter),
"Could not create package writer.");
}
//Begin the lone document.
{
SkTScopedComPtr<IOpcPartUri> partUri;
HRM(this->fXpsFactory->CreatePartUri(
L"/Documents/1/FixedDocument.fdoc",
&partUri),
"Could not create fixed document part uri.");
HRM(this->fPackageWriter->StartNewDocument(partUri.get(),
NULL,
NULL,
NULL,
NULL),
"Could not start document.");
}
return S_OK;
}
bool SkXPSDevice::endSheet() {
//XPS is fixed at 96dpi (XPS Spec 11.1).
static const float xpsDPI = 96.0f;
static const float inchesPerMeter = 10000.0f / 254.0f;
static const float targetUnitsPerMeter = xpsDPI * inchesPerMeter;
const float scaleX = targetUnitsPerMeter
/ SkScalarToFLOAT(this->fCurrentUnitsPerMeter.fX);
const float scaleY = targetUnitsPerMeter
/ SkScalarToFLOAT(this->fCurrentUnitsPerMeter.fY);
//Create the scale canvas.
SkTScopedComPtr<IXpsOMCanvas> scaleCanvas;
HRBM(this->fXpsFactory->CreateCanvas(&scaleCanvas),
"Could not create scale canvas.");
SkTScopedComPtr<IXpsOMVisualCollection> scaleCanvasVisuals;
HRBM(scaleCanvas->GetVisuals(&scaleCanvasVisuals),
"Could not get scale canvas visuals.");
SkTScopedComPtr<IXpsOMMatrixTransform> geomToPhys;
XPS_MATRIX rawGeomToPhys = { scaleX, 0, 0, scaleY, 0, 0, };
HRBM(this->fXpsFactory->CreateMatrixTransform(&rawGeomToPhys, &geomToPhys),
"Could not create geometry to physical transform.");
HRBM(scaleCanvas->SetTransformLocal(geomToPhys.get()),
"Could not set transform on scale canvas.");
//Add the content canvas to the scale canvas.
HRBM(scaleCanvasVisuals->Append(this->fCurrentXpsCanvas.get()),
"Could not add base canvas to scale canvas.");
//Create the page.
XPS_SIZE pageSize = {
SkScalarToFLOAT(this->fCurrentCanvasSize.width()) * scaleX,
SkScalarToFLOAT(this->fCurrentCanvasSize.height()) * scaleY,
};
SkTScopedComPtr<IXpsOMPage> page;
HRB(this->createXpsPage(pageSize, &page));
SkTScopedComPtr<IXpsOMVisualCollection> pageVisuals;
HRBM(page->GetVisuals(&pageVisuals), "Could not get page visuals.");
//Add the scale canvas to the page.
HRBM(pageVisuals->Append(scaleCanvas.get()),
"Could not add scale canvas to page.");
//Create the package writer if it hasn't been created yet.
if (NULL == this->fPackageWriter.get()) {
SkTScopedComPtr<IXpsOMImageResource> image;
//Ignore return, thumbnail is completely optional.
this->createXpsThumbnail(page.get(), 0, &image);
HRB(this->initXpsDocumentWriter(image.get()));
}
HRBM(this->fPackageWriter->AddPage(page.get(),
&pageSize,
NULL,
NULL,
NULL,
NULL),
"Could not write the page.");
this->fCurrentXpsCanvas.reset();
return true;
}
static HRESULT subset_typeface(SkXPSDevice::TypefaceUse* current) {
//CreateFontPackage wants unsigned short.
//Microsoft, Y U NO stdint.h?
SkTDArray<unsigned short> keepList;
current->glyphsUsed->exportTo(&keepList);
//The following are declared with the types required by CreateFontPackage.
unsigned char *puchFontPackageBuffer;
unsigned long pulFontPackageBufferSize;
unsigned long pulBytesWritten;
unsigned long result = CreateFontPackage(
(unsigned char *) current->fontData->getMemoryBase(),
(unsigned long) current->fontData->getLength(),
&puchFontPackageBuffer,
&pulFontPackageBufferSize,
&pulBytesWritten,
TTFCFP_FLAGS_SUBSET | TTFCFP_FLAGS_GLYPHLIST,// | TTFCFP_FLAGS_TTC,
0,//TTC index
TTFCFP_SUBSET,
0,
0,
0,
keepList.begin(),
keepList.count(),
sk_malloc_throw,
sk_realloc_throw,
sk_free,
NULL);
if (result != NO_ERROR) {
SkDEBUGF(("CreateFontPackage Error %lu", result));
return E_UNEXPECTED;
}
SkMemoryStream* newStream = new SkMemoryStream;
newStream->setMemoryOwned(puchFontPackageBuffer, pulBytesWritten);
SkTScopedComPtr<IStream> newIStream;
SkIStream::CreateFromSkStream(newStream, true, &newIStream);
XPS_FONT_EMBEDDING embedding;
HRM(current->xpsFont->GetEmbeddingOption(&embedding),
"Could not get embedding option from font.");
SkTScopedComPtr<IOpcPartUri> partUri;
HRM(current->xpsFont->GetPartName(&partUri),
"Could not get part uri from font.");
HRM(current->xpsFont->SetContent(
newIStream.get(),
embedding,
partUri.get()),
"Could not set new stream for subsetted font.");
return S_OK;
}
bool SkXPSDevice::endPortfolio() {
//Subset fonts
if (!this->fTypefaces.empty()) {
SkXPSDevice::TypefaceUse* current = &this->fTypefaces.front();
const TypefaceUse* last = &this->fTypefaces.back();
for (; current <= last; ++current) {
//Ignore return for now, if it didn't subset, let it be.
subset_typeface(current);
}
}
HRBM(this->fPackageWriter->Close(), "Could not close writer.");
return true;
}
static XPS_COLOR xps_color(const SkColor skColor) {
//XPS uses non-pre-multiplied alpha (XPS Spec 11.4).
XPS_COLOR xpsColor;
xpsColor.colorType = XPS_COLOR_TYPE_SRGB;
xpsColor.value.sRGB.alpha = SkColorGetA(skColor);
xpsColor.value.sRGB.red = SkColorGetR(skColor);
xpsColor.value.sRGB.green = SkColorGetG(skColor);
xpsColor.value.sRGB.blue = SkColorGetB(skColor);
return xpsColor;
}
static XPS_POINT xps_point(const SkPoint& point) {
XPS_POINT xpsPoint = {
SkScalarToFLOAT(point.fX),
SkScalarToFLOAT(point.fY),
};
return xpsPoint;
}
static XPS_POINT xps_point(const SkPoint& point, const SkMatrix& matrix) {
SkPoint skTransformedPoint;
matrix.mapXY(point.fX, point.fY, &skTransformedPoint);
return xps_point(skTransformedPoint);
}
static XPS_SPREAD_METHOD xps_spread_method(SkShader::TileMode tileMode) {
switch (tileMode) {
case SkShader::kClamp_TileMode:
return XPS_SPREAD_METHOD_PAD;
case SkShader::kRepeat_TileMode:
return XPS_SPREAD_METHOD_REPEAT;
case SkShader::kMirror_TileMode:
return XPS_SPREAD_METHOD_REFLECT;
default:
SkASSERT(!"Unknown tile mode.");
}
return XPS_SPREAD_METHOD_PAD;
}
static void transform_offsets(SkScalar* stopOffsets, const int numOffsets,
const SkPoint& start, const SkPoint& end,
const SkMatrix& transform) {
SkPoint startTransformed;
transform.mapXY(start.fX, start.fY, &startTransformed);
SkPoint endTransformed;
transform.mapXY(end.fX, end.fY, &endTransformed);
//Manhattan distance between transformed start and end.
SkScalar startToEnd = (endTransformed.fX - startTransformed.fX)
+ (endTransformed.fY - startTransformed.fY);
if (SkScalarNearlyZero(startToEnd)) {
for (int i = 0; i < numOffsets; ++i) {
stopOffsets[i] = 0;
}
return;
}
for (int i = 0; i < numOffsets; ++i) {
SkPoint stop;
stop.fX = SkScalarMul(end.fX - start.fX, stopOffsets[i]);
stop.fY = SkScalarMul(end.fY - start.fY, stopOffsets[i]);
SkPoint stopTransformed;
transform.mapXY(stop.fX, stop.fY, &stopTransformed);
//Manhattan distance between transformed start and stop.
SkScalar startToStop = (stopTransformed.fX - startTransformed.fX)
+ (stopTransformed.fY - startTransformed.fY);
//Percentage along transformed line.
stopOffsets[i] = SkScalarDiv(startToStop, startToEnd);
}
}
HRESULT SkXPSDevice::createXpsTransform(const SkMatrix& matrix,
IXpsOMMatrixTransform** xpsTransform) {
SkScalar affine[6];
if (!matrix.asAffine(affine)) {
*xpsTransform = NULL;
return S_FALSE;
}
XPS_MATRIX rawXpsMatrix = {
SkScalarToFLOAT(affine[SkMatrix::kAScaleX]),
SkScalarToFLOAT(affine[SkMatrix::kASkewY]),
SkScalarToFLOAT(affine[SkMatrix::kASkewX]),
SkScalarToFLOAT(affine[SkMatrix::kAScaleY]),
SkScalarToFLOAT(affine[SkMatrix::kATransX]),
SkScalarToFLOAT(affine[SkMatrix::kATransY]),
};
HRM(this->fXpsFactory->CreateMatrixTransform(&rawXpsMatrix, xpsTransform),
"Could not create transform.");
return S_OK;
}
HRESULT SkXPSDevice::createPath(IXpsOMGeometryFigure* figure,
IXpsOMVisualCollection* visuals,
IXpsOMPath** path) {
SkTScopedComPtr<IXpsOMGeometry> geometry;
HRM(this->fXpsFactory->CreateGeometry(&geometry),
"Could not create geometry.");
SkTScopedComPtr<IXpsOMGeometryFigureCollection> figureCollection;
HRM(geometry->GetFigures(&figureCollection), "Could not get figures.");
HRM(figureCollection->Append(figure), "Could not add figure.");
HRM(this->fXpsFactory->CreatePath(path), "Could not create path.");
HRM((*path)->SetGeometryLocal(geometry.get()), "Could not set geometry");
HRM(visuals->Append(*path), "Could not add path to visuals.");
return S_OK;
}
HRESULT SkXPSDevice::createXpsSolidColorBrush(const SkColor skColor,
const SkAlpha alpha,
IXpsOMBrush** xpsBrush) {
XPS_COLOR xpsColor = xps_color(skColor);
SkTScopedComPtr<IXpsOMSolidColorBrush> solidBrush;
HRM(this->fXpsFactory->CreateSolidColorBrush(&xpsColor, NULL, &solidBrush),
"Could not create solid color brush.");
HRM(solidBrush->SetOpacity(alpha / 255.0f), "Could not set opacity.");
HRM(solidBrush->QueryInterface<IXpsOMBrush>(xpsBrush), "QI Fail.");
return S_OK;
}
HRESULT SkXPSDevice::sideOfClamp(const SkRect& areaToFill,
const XPS_RECT& imageViewBox,
IXpsOMImageResource* image,
IXpsOMVisualCollection* visuals) {
SkTScopedComPtr<IXpsOMGeometryFigure> areaToFillFigure;
HR(this->createXpsRect(areaToFill, FALSE, TRUE, &areaToFillFigure));
SkTScopedComPtr<IXpsOMPath> areaToFillPath;
HR(this->createPath(areaToFillFigure.get(), visuals, &areaToFillPath));
SkTScopedComPtr<IXpsOMImageBrush> areaToFillBrush;
HRM(this->fXpsFactory->CreateImageBrush(image,
&imageViewBox,
&imageViewBox,
&areaToFillBrush),
"Could not create brush for side of clamp.");
HRM(areaToFillBrush->SetTileMode(XPS_TILE_MODE_FLIPXY),
"Could not set tile mode for side of clamp.");
HRM(areaToFillPath->SetFillBrushLocal(areaToFillBrush.get()),
"Could not set brush for side of clamp");
return S_OK;
}
HRESULT SkXPSDevice::cornerOfClamp(const SkRect& areaToFill,
const SkColor color,
IXpsOMVisualCollection* visuals) {
SkTScopedComPtr<IXpsOMGeometryFigure> areaToFillFigure;
HR(this->createXpsRect(areaToFill, FALSE, TRUE, &areaToFillFigure));
SkTScopedComPtr<IXpsOMPath> areaToFillPath;
HR(this->createPath(areaToFillFigure.get(), visuals, &areaToFillPath));
SkTScopedComPtr<IXpsOMBrush> areaToFillBrush;
HR(this->createXpsSolidColorBrush(color, 0xFF, &areaToFillBrush));
HRM(areaToFillPath->SetFillBrushLocal(areaToFillBrush.get()),
"Could not set brush for corner of clamp.");
return S_OK;
}
static const XPS_TILE_MODE XTM_N = XPS_TILE_MODE_NONE;
static const XPS_TILE_MODE XTM_T = XPS_TILE_MODE_TILE;
static const XPS_TILE_MODE XTM_X = XPS_TILE_MODE_FLIPX;
static const XPS_TILE_MODE XTM_Y = XPS_TILE_MODE_FLIPY;
static const XPS_TILE_MODE XTM_XY = XPS_TILE_MODE_FLIPXY;
//TODO(bungeman): In the future, should skia add None,
//handle None+Mirror and None+Repeat correctly.
//None is currently an internal hack so masks don't repeat (None+None only).
static XPS_TILE_MODE SkToXpsTileMode[SkShader::kTileModeCount+1]
[SkShader::kTileModeCount+1] = {
//Clamp //Repeat //Mirror //None
/*Clamp */ XTM_N, XTM_T, XTM_Y, XTM_N,
/*Repeat*/ XTM_T, XTM_T, XTM_Y, XTM_N,
/*Mirror*/ XTM_X, XTM_X, XTM_XY, XTM_X,
/*None */ XTM_N, XTM_N, XTM_Y, XTM_N,
};
HRESULT SkXPSDevice::createXpsImageBrush(
const SkBitmap& bitmap,
const SkMatrix& localMatrix,
const SkShader::TileMode (&xy)[2],
const SkAlpha alpha,
IXpsOMTileBrush** xpsBrush) {
SkDynamicMemoryWStream write;
if (!SkImageEncoder::EncodeStream(&write, bitmap,
SkImageEncoder::kPNG_Type, 100)) {
HRM(E_FAIL, "Unable to encode bitmap as png.");
}
SkMemoryStream* read = new SkMemoryStream;
read->setData(write.copyToData())->unref();
SkTScopedComPtr<IStream> readWrapper;
HRM(SkIStream::CreateFromSkStream(read, true, &readWrapper),
"Could not create stream from png data.");
const size_t size =
SK_ARRAY_COUNT(L"/Documents/1/Resources/Images/" L_GUID_ID L".png");
wchar_t buffer[size];
wchar_t id[GUID_ID_LEN];
HR(create_id(id, GUID_ID_LEN));
swprintf_s(buffer, size, L"/Documents/1/Resources/Images/%s.png", id);
SkTScopedComPtr<IOpcPartUri> imagePartUri;
HRM(this->fXpsFactory->CreatePartUri(buffer, &imagePartUri),
"Could not create image part uri.");
SkTScopedComPtr<IXpsOMImageResource> imageResource;
HRM(this->fXpsFactory->CreateImageResource(
readWrapper.get(),
XPS_IMAGE_TYPE_PNG,
imagePartUri.get(),
&imageResource),
"Could not create image resource.");
XPS_RECT bitmapRect = {
0.0, 0.0,
static_cast<FLOAT>(bitmap.width()), static_cast<FLOAT>(bitmap.height())
};
SkTScopedComPtr<IXpsOMImageBrush> xpsImageBrush;
HRM(this->fXpsFactory->CreateImageBrush(imageResource.get(),
&bitmapRect, &bitmapRect,
&xpsImageBrush),
"Could not create image brush.");
if (SkShader::kClamp_TileMode != xy[0] &&
SkShader::kClamp_TileMode != xy[1]) {
HRM(xpsImageBrush->SetTileMode(SkToXpsTileMode[xy[0]][xy[1]]),
"Could not set image tile mode");
HRM(xpsImageBrush->SetOpacity(alpha / 255.0f),
"Could not set image opacity.");
HRM(xpsImageBrush->QueryInterface(xpsBrush), "QI failed.");
} else {
//TODO(bungeman): compute how big this really needs to be.
const SkScalar BIG = SkIntToScalar(1000); //SK_ScalarMax;
const FLOAT BIG_F = SkScalarToFLOAT(BIG);
const SkScalar bWidth = SkIntToScalar(bitmap.width());
const SkScalar bHeight = SkIntToScalar(bitmap.height());
//create brush canvas
SkTScopedComPtr<IXpsOMCanvas> brushCanvas;
HRM(this->fXpsFactory->CreateCanvas(&brushCanvas),
"Could not create image brush canvas.");
SkTScopedComPtr<IXpsOMVisualCollection> brushVisuals;
HRM(brushCanvas->GetVisuals(&brushVisuals),
"Could not get image brush canvas visuals collection.");
//create central figure
const SkRect bitmapPoints = SkRect::MakeLTRB(0, 0, bWidth, bHeight);
SkTScopedComPtr<IXpsOMGeometryFigure> centralFigure;
HR(this->createXpsRect(bitmapPoints, FALSE, TRUE, &centralFigure));
SkTScopedComPtr<IXpsOMPath> centralPath;
HR(this->createPath(centralFigure.get(),
brushVisuals.get(),
&centralPath));
HRM(xpsImageBrush->SetTileMode(XPS_TILE_MODE_FLIPXY),
"Could not set tile mode for image brush central path.");
HRM(centralPath->SetFillBrushLocal(xpsImageBrush.get()),
"Could not set fill brush for image brush central path.");
//add left/right
if (SkShader::kClamp_TileMode == xy[0]) {
SkRect leftArea = SkRect::MakeLTRB(-BIG, 0, 0, bHeight);
XPS_RECT leftImageViewBox = {
0.0, 0.0,
1.0, static_cast<FLOAT>(bitmap.height()),
};
HR(this->sideOfClamp(leftArea, leftImageViewBox,
imageResource.get(),
brushVisuals.get()));
SkRect rightArea = SkRect::MakeLTRB(bWidth, 0, BIG, bHeight);
XPS_RECT rightImageViewBox = {
bitmap.width() - 1.0f, 0.0f,
1.0f, static_cast<FLOAT>(bitmap.height()),
};
HR(this->sideOfClamp(rightArea, rightImageViewBox,
imageResource.get(),
brushVisuals.get()));
}
//add top/bottom
if (SkShader::kClamp_TileMode == xy[1]) {
SkRect topArea = SkRect::MakeLTRB(0, -BIG, bWidth, 0);
XPS_RECT topImageViewBox = {
0.0, 0.0,
static_cast<FLOAT>(bitmap.width()), 1.0,
};
HR(this->sideOfClamp(topArea, topImageViewBox,
imageResource.get(),
brushVisuals.get()));
SkRect bottomArea = SkRect::MakeLTRB(0, bHeight, bWidth, BIG);
XPS_RECT bottomImageViewBox = {
0.0f, bitmap.height() - 1.0f,
static_cast<FLOAT>(bitmap.width()), 1.0f,
};
HR(this->sideOfClamp(bottomArea, bottomImageViewBox,
imageResource.get(),
brushVisuals.get()));
}
//add tl, tr, bl, br
if (SkShader::kClamp_TileMode == xy[0] &&
SkShader::kClamp_TileMode == xy[1]) {
SkAutoLockPixels alp(bitmap);
const SkColor tlColor = bitmap.getColor(0,0);
const SkRect tlArea = SkRect::MakeLTRB(-BIG, -BIG, 0, 0);
HR(this->cornerOfClamp(tlArea, tlColor, brushVisuals.get()));
const SkColor trColor = bitmap.getColor(bitmap.width()-1,0);
const SkRect trArea = SkRect::MakeLTRB(bWidth, -BIG, BIG, 0);
HR(this->cornerOfClamp(trArea, trColor, brushVisuals.get()));
const SkColor brColor = bitmap.getColor(bitmap.width()-1,
bitmap.height()-1);
const SkRect brArea = SkRect::MakeLTRB(bWidth, bHeight, BIG, BIG);
HR(this->cornerOfClamp(brArea, brColor, brushVisuals.get()));
const SkColor blColor = bitmap.getColor(0,bitmap.height()-1);
const SkRect blArea = SkRect::MakeLTRB(-BIG, bHeight, 0, BIG);
HR(this->cornerOfClamp(blArea, blColor, brushVisuals.get()));
}
//create visual brush from canvas
XPS_RECT bound = {};
if (SkShader::kClamp_TileMode == xy[0] &&
SkShader::kClamp_TileMode == xy[1]) {
bound.x = BIG_F / -2;
bound.y = BIG_F / -2;
bound.width = BIG_F;
bound.height = BIG_F;
} else if (SkShader::kClamp_TileMode == xy[0]) {
bound.x = BIG_F / -2;
bound.y = 0.0f;
bound.width = BIG_F;
bound.height = static_cast<FLOAT>(bitmap.height());
} else if (SkShader::kClamp_TileMode == xy[1]) {
bound.x = 0;
bound.y = BIG_F / -2;
bound.width = static_cast<FLOAT>(bitmap.width());
bound.height = BIG_F;
}
SkTScopedComPtr<IXpsOMVisualBrush> clampBrush;
HRM(this->fXpsFactory->CreateVisualBrush(&bound, &bound, &clampBrush),
"Could not create visual brush for image brush.");
HRM(clampBrush->SetVisualLocal(brushCanvas.get()),
"Could not set canvas on visual brush for image brush.");
HRM(clampBrush->SetTileMode(SkToXpsTileMode[xy[0]][xy[1]]),
"Could not set tile mode on visual brush for image brush.");
HRM(clampBrush->SetOpacity(alpha / 255.0f),
"Could not set opacity on visual brush for image brush.");
HRM(clampBrush->QueryInterface(xpsBrush), "QI failed.");
}
SkTScopedComPtr<IXpsOMMatrixTransform> xpsMatrixToUse;
HR(this->createXpsTransform(localMatrix, &xpsMatrixToUse));
if (NULL != xpsMatrixToUse.get()) {
HRM((*xpsBrush)->SetTransformLocal(xpsMatrixToUse.get()),
"Could not set transform for image brush.");
} else {
//TODO(bungeman): perspective bitmaps in general.
}
return S_OK;
}
HRESULT SkXPSDevice::createXpsGradientStop(const SkColor skColor,
const SkScalar offset,
IXpsOMGradientStop** xpsGradStop) {
XPS_COLOR gradStopXpsColor = xps_color(skColor);
HRM(this->fXpsFactory->CreateGradientStop(&gradStopXpsColor,
NULL,
SkScalarToFLOAT(offset),
xpsGradStop),
"Could not create gradient stop.");
return S_OK;
}
HRESULT SkXPSDevice::createXpsLinearGradient(SkShader::GradientInfo info,
const SkAlpha alpha,
const SkMatrix& localMatrix,
IXpsOMMatrixTransform* xpsMatrix,
IXpsOMBrush** xpsBrush) {
XPS_POINT startPoint;
XPS_POINT endPoint;
if (NULL != xpsMatrix) {
startPoint = xps_point(info.fPoint[0]);
endPoint = xps_point(info.fPoint[1]);
} else {
transform_offsets(info.fColorOffsets, info.fColorCount,
info.fPoint[0], info.fPoint[1],
localMatrix);
startPoint = xps_point(info.fPoint[0], localMatrix);
endPoint = xps_point(info.fPoint[1], localMatrix);
}
SkTScopedComPtr<IXpsOMGradientStop> gradStop0;
HR(createXpsGradientStop(info.fColors[0],
info.fColorOffsets[0],
&gradStop0));
SkTScopedComPtr<IXpsOMGradientStop> gradStop1;
HR(createXpsGradientStop(info.fColors[1],
info.fColorOffsets[1],
&gradStop1));
SkTScopedComPtr<IXpsOMLinearGradientBrush> gradientBrush;
HRM(this->fXpsFactory->CreateLinearGradientBrush(gradStop0.get(),
gradStop1.get(),
&startPoint,
&endPoint,
&gradientBrush),
"Could not create linear gradient brush.");
if (NULL != xpsMatrix) {
HRM(gradientBrush->SetTransformLocal(xpsMatrix),
"Could not set transform on linear gradient brush.");
}
SkTScopedComPtr<IXpsOMGradientStopCollection> gradStopCollection;
HRM(gradientBrush->GetGradientStops(&gradStopCollection),
"Could not get linear gradient stop collection.");
for (int i = 2; i < info.fColorCount; ++i) {
SkTScopedComPtr<IXpsOMGradientStop> gradStop;
HR(createXpsGradientStop(info.fColors[i],
info.fColorOffsets[i],
&gradStop));
HRM(gradStopCollection->Append(gradStop.get()),
"Could not add linear gradient stop.");
}
HRM(gradientBrush->SetSpreadMethod(xps_spread_method(info.fTileMode)),
"Could not set spread method of linear gradient.");
HRM(gradientBrush->SetOpacity(alpha / 255.0f),
"Could not set opacity of linear gradient brush.");
HRM(gradientBrush->QueryInterface<IXpsOMBrush>(xpsBrush), "QI failed");
return S_OK;
}
HRESULT SkXPSDevice::createXpsRadialGradient(SkShader::GradientInfo info,
const SkAlpha alpha,
const SkMatrix& localMatrix,
IXpsOMMatrixTransform* xpsMatrix,
IXpsOMBrush** xpsBrush) {
SkTScopedComPtr<IXpsOMGradientStop> gradStop0;
HR(createXpsGradientStop(info.fColors[0],
info.fColorOffsets[0],
&gradStop0));
SkTScopedComPtr<IXpsOMGradientStop> gradStop1;
HR(createXpsGradientStop(info.fColors[1],
info.fColorOffsets[1],
&gradStop1));
//TODO: figure out how to fake better if not affine
XPS_POINT centerPoint;
XPS_POINT gradientOrigin;
XPS_SIZE radiiSizes;
if (NULL != xpsMatrix) {
centerPoint = xps_point(info.fPoint[0]);
gradientOrigin = xps_point(info.fPoint[0]);
radiiSizes.width = SkScalarToFLOAT(info.fRadius[0]);
radiiSizes.height = SkScalarToFLOAT(info.fRadius[0]);
} else {
centerPoint = xps_point(info.fPoint[0], localMatrix);
gradientOrigin = xps_point(info.fPoint[0], localMatrix);
SkScalar radius = info.fRadius[0];
SkVector vec[2];
vec[0].set(radius, 0);
vec[1].set(0, radius);
localMatrix.mapVectors(vec, 2);
SkScalar d0 = vec[0].length();
SkScalar d1 = vec[1].length();
radiiSizes.width = SkScalarToFLOAT(d0);
radiiSizes.height = SkScalarToFLOAT(d1);
}
SkTScopedComPtr<IXpsOMRadialGradientBrush> gradientBrush;
HRM(this->fXpsFactory->CreateRadialGradientBrush(gradStop0.get(),
gradStop1.get(),
&centerPoint,
&gradientOrigin,
&radiiSizes,
&gradientBrush),
"Could not create radial gradient brush.");
if (NULL != xpsMatrix) {
HRM(gradientBrush->SetTransformLocal(xpsMatrix),
"Could not set transform on radial gradient brush.");
}
SkTScopedComPtr<IXpsOMGradientStopCollection> gradStopCollection;
HRM(gradientBrush->GetGradientStops(&gradStopCollection),
"Could not get radial gradient stop collection.");
for (int i = 2; i < info.fColorCount; ++i) {
SkTScopedComPtr<IXpsOMGradientStop> gradStop;
HR(createXpsGradientStop(info.fColors[i],
info.fColorOffsets[i],
&gradStop));
HRM(gradStopCollection->Append(gradStop.get()),
"Could not add radial gradient stop.");
}
HRM(gradientBrush->SetSpreadMethod(xps_spread_method(info.fTileMode)),
"Could not set spread method of radial gradient.");
HRM(gradientBrush->SetOpacity(alpha / 255.0f),
"Could not set opacity of radial gradient brush.");
HRM(gradientBrush->QueryInterface<IXpsOMBrush>(xpsBrush), "QI failed.");
return S_OK;
}
HRESULT SkXPSDevice::createXpsBrush(const SkPaint& skPaint,
IXpsOMBrush** brush,
const SkMatrix* parentTransform) {
const SkShader *shader = skPaint.getShader();
if (NULL == shader) {
HR(this->createXpsSolidColorBrush(skPaint.getColor(), 0xFF, brush));
return S_OK;
}
//Gradient shaders.
SkShader::GradientInfo info;
info.fColorCount = 0;
info.fColors = NULL;
info.fColorOffsets = NULL;
SkShader::GradientType gradientType = shader->asAGradient(&info);
if (SkShader::kNone_GradientType == gradientType) {
//Nothing to see, move along.
} else if (SkShader::kColor_GradientType == gradientType) {
SkASSERT(1 == info.fColorCount);
SkColor color;
info.fColors = &color;
SkShader::GradientType gradientType = shader->asAGradient(&info);
SkAlpha alpha = skPaint.getAlpha();
HR(this->createXpsSolidColorBrush(color, alpha, brush));
return S_OK;
} else {
if (info.fColorCount == 0) {
const SkColor color = skPaint.getColor();
HR(this->createXpsSolidColorBrush(color, 0xFF, brush));
return S_OK;
}
SkAutoTArray<SkColor> colors(info.fColorCount);
SkAutoTArray<SkScalar> colorOffsets(info.fColorCount);
info.fColors = colors.get();
info.fColorOffsets = colorOffsets.get();
shader->asAGradient(&info);
if (1 == info.fColorCount) {
SkColor color = info.fColors[0];
SkAlpha alpha = skPaint.getAlpha();
HR(this->createXpsSolidColorBrush(color, alpha, brush));
return S_OK;
}
SkMatrix localMatrix;
shader->getLocalMatrix(&localMatrix);
if (NULL != parentTransform) {
localMatrix.preConcat(*parentTransform);
}
SkTScopedComPtr<IXpsOMMatrixTransform> xpsMatrixToUse;
HR(this->createXpsTransform(localMatrix, &xpsMatrixToUse));
if (SkShader::kLinear_GradientType == gradientType) {
HR(this->createXpsLinearGradient(info,
skPaint.getAlpha(),
localMatrix,
xpsMatrixToUse.get(),
brush));
return S_OK;
}
if (SkShader::kRadial_GradientType == gradientType) {
HR(this->createXpsRadialGradient(info,
skPaint.getAlpha(),
localMatrix,
xpsMatrixToUse.get(),
brush));
return S_OK;
}
if (SkShader::kRadial2_GradientType == gradientType) {
//simple if affine and one is 0, otherwise will have to fake
}
if (SkShader::kSweep_GradientType == gradientType) {
//have to fake
}
}
SkBitmap outTexture;
SkMatrix outMatrix;
SkShader::TileMode xy[2];
SkScalar twoPointRadialParams[3];
SkShader::BitmapType bitmapType = shader->asABitmap(&outTexture,
&outMatrix,
xy,
twoPointRadialParams);
switch (bitmapType) {
case SkShader::kNone_BitmapType:
break;
case SkShader::kDefault_BitmapType: {
//TODO: outMatrix??
SkMatrix localMatrix;
shader->getLocalMatrix(&localMatrix);
if (NULL != parentTransform) {
localMatrix.preConcat(*parentTransform);
}
SkTScopedComPtr<IXpsOMTileBrush> tileBrush;
HR(this->createXpsImageBrush(outTexture,
localMatrix,
xy,
skPaint.getAlpha(),
&tileBrush));
HRM(tileBrush->QueryInterface<IXpsOMBrush>(brush), "QI failed.");
return S_OK;
}
case SkShader::kRadial_BitmapType:
case SkShader::kSweep_BitmapType:
case SkShader::kTwoPointRadial_BitmapType:
default:
break;
}
HR(this->createXpsSolidColorBrush(skPaint.getColor(), 0xFF, brush));
return S_OK;
}
static bool rect_must_be_pathed(const SkPaint& paint, const SkMatrix& matrix) {
const bool zeroWidth = (0 == paint.getStrokeWidth());
const bool stroke = (SkPaint::kFill_Style != paint.getStyle());
return paint.getPathEffect() ||
paint.getMaskFilter() ||
paint.getRasterizer() ||
(stroke && (
(matrix.hasPerspective() && !zeroWidth) ||
SkPaint::kMiter_Join != paint.getStrokeJoin() ||
(SkPaint::kMiter_Join == paint.getStrokeJoin() &&
paint.getStrokeMiter() < SK_ScalarSqrt2)
))
;
}
HRESULT SkXPSDevice::createXpsRect(const SkRect& rect, BOOL stroke, BOOL fill,
IXpsOMGeometryFigure** xpsRect) {
const SkPoint points[4] = {
{ rect.fLeft, rect.fTop },
{ rect.fRight, rect.fTop },
{ rect.fRight, rect.fBottom },
{ rect.fLeft, rect.fBottom },
};
return this->createXpsQuad(points, stroke, fill, xpsRect);
}
HRESULT SkXPSDevice::createXpsQuad(const SkPoint (&points)[4],
BOOL stroke, BOOL fill,
IXpsOMGeometryFigure** xpsQuad) {
// Define the start point.
XPS_POINT startPoint = xps_point(points[0]);
// Create the figure.
HRM(this->fXpsFactory->CreateGeometryFigure(&startPoint, xpsQuad),
"Could not create quad geometry figure.");
// Define the type of each segment.
XPS_SEGMENT_TYPE segmentTypes[3] = {
XPS_SEGMENT_TYPE_LINE,
XPS_SEGMENT_TYPE_LINE,
XPS_SEGMENT_TYPE_LINE,
};
// Define the x and y coordinates of each corner of the figure.
FLOAT segmentData[6] = {
SkScalarToFLOAT(points[1].fX), SkScalarToFLOAT(points[1].fY),
SkScalarToFLOAT(points[2].fX), SkScalarToFLOAT(points[2].fY),
SkScalarToFLOAT(points[3].fX), SkScalarToFLOAT(points[3].fY),
};
// Describe if the segments are stroked.
BOOL segmentStrokes[3] = {
stroke, stroke, stroke,
};
// Add the segment data to the figure.
HRM((*xpsQuad)->SetSegments(
3, 6,
segmentTypes , segmentData, segmentStrokes),
"Could not add segment data to quad.");
// Set the closed and filled properties of the figure.
HRM((*xpsQuad)->SetIsClosed(stroke), "Could not set quad close.");
HRM((*xpsQuad)->SetIsFilled(fill), "Could not set quad fill.");
return S_OK;
}
void SkXPSDevice::clear(SkColor color) {
//TODO: override this for XPS
SkDEBUGF(("XPS clear not yet implemented."));
}
void SkXPSDevice::drawPoints(const SkDraw& d, SkCanvas::PointMode mode,
size_t count, const SkPoint points[],
const SkPaint& paint) {
//This will call back into the device to do the drawing.
d.drawPoints(mode, count, points, paint, true);
}
void SkXPSDevice::drawVertices(const SkDraw&, SkCanvas::VertexMode,
int vertexCount, const SkPoint verts[],
const SkPoint texs[], const SkColor colors[],
SkXfermode* xmode, const uint16_t indices[],
int indexCount, const SkPaint& paint) {
//TODO: override this for XPS
SkDEBUGF(("XPS drawVertices not yet implemented."));
}
void SkXPSDevice::drawPaint(const SkDraw& d, const SkPaint& paint) {
const SkRect r = SkRect::MakeSize(this->fCurrentCanvasSize);
//If trying to paint with a stroke, ignore that and fill.
SkPaint* fillPaint = const_cast<SkPaint*>(&paint);
SkTLazy<SkPaint> modifiedPaint;
if (paint.getStyle() != SkPaint::kFill_Style) {
fillPaint = modifiedPaint.set(paint);
fillPaint->setStyle(SkPaint::kFill_Style);
}
this->internalDrawRect(d, r, false, *fillPaint);
}
void SkXPSDevice::drawRect(const SkDraw& d,
const SkRect& r,
const SkPaint& paint) {
this->internalDrawRect(d, r, true, paint);
}
void SkXPSDevice::internalDrawRect(const SkDraw& d,
const SkRect& r,
bool transformRect,
const SkPaint& paint) {
//Exit early if there is nothing to draw.
if (d.fClip->isEmpty() ||
(paint.getAlpha() == 0 && paint.getXfermode() == NULL)) {
return;
}
//Path the rect if we can't optimize it.
if (rect_must_be_pathed(paint, *d.fMatrix)) {
SkPath tmp;
tmp.addRect(r);
tmp.setFillType(SkPath::kWinding_FillType);
this->drawPath(d, tmp, paint, NULL, true);
return;
}
//Create the shaded path.
SkTScopedComPtr<IXpsOMPath> shadedPath;
HRVM(this->fXpsFactory->CreatePath(&shadedPath),
"Could not create shaded path for rect.");
//Create the shaded geometry.
SkTScopedComPtr<IXpsOMGeometry> shadedGeometry;
HRVM(this->fXpsFactory->CreateGeometry(&shadedGeometry),
"Could not create shaded geometry for rect.");
//Add the geometry to the shaded path.
HRVM(shadedPath->SetGeometryLocal(shadedGeometry.get()),
"Could not set shaded geometry for rect.");
//Set the brushes.
BOOL fill = FALSE;
BOOL stroke = FALSE;
HRV(this->shadePath(shadedPath.get(), paint, *d.fMatrix, &fill, &stroke));
bool xpsTransformsPath = true;
//Transform the geometry.
if (transformRect && xpsTransformsPath) {
SkTScopedComPtr<IXpsOMMatrixTransform> xpsTransform;
HRV(this->createXpsTransform(*d.fMatrix, &xpsTransform));
if (xpsTransform.get()) {
HRVM(shadedGeometry->SetTransformLocal(xpsTransform.get()),
"Could not set transform for rect.");
} else {
xpsTransformsPath = false;
}
}
//Create the figure.
SkTScopedComPtr<IXpsOMGeometryFigure> rectFigure;
{
SkPoint points[4] = {
{ r.fLeft, r.fTop },
{ r.fLeft, r.fBottom },
{ r.fRight, r.fBottom },
{ r.fRight, r.fTop },
};
if (!xpsTransformsPath && transformRect) {
d.fMatrix->mapPoints(points, SK_ARRAY_COUNT(points));
}
HRV(this->createXpsQuad(points, stroke, fill, &rectFigure));
}
//Get the figures of the shaded geometry.
SkTScopedComPtr<IXpsOMGeometryFigureCollection> shadedFigures;
HRVM(shadedGeometry->GetFigures(&shadedFigures),
"Could not get shaded figures for rect.");
//Add the figure to the shaded geometry figures.
HRVM(shadedFigures->Append(rectFigure.get()),
"Could not add shaded figure for rect.");
HRV(this->clip(shadedPath.get(), d));
//Add the shaded path to the current visuals.
SkTScopedComPtr<IXpsOMVisualCollection> currentVisuals;
HRVM(this->fCurrentXpsCanvas->GetVisuals(&currentVisuals),
"Could not get current visuals for rect.");
HRVM(currentVisuals->Append(shadedPath.get()),
"Could not add rect to current visuals.");
}
static HRESULT close_figure(const SkTDArray<XPS_SEGMENT_TYPE>& segmentTypes,
const SkTDArray<BOOL>& segmentStrokes,
const SkTDArray<FLOAT>& segmentData,
BOOL stroke, BOOL fill,
IXpsOMGeometryFigure* figure,
IXpsOMGeometryFigureCollection* figures) {
// Add the segment data to the figure.
HRM(figure->SetSegments(segmentTypes.count(), segmentData.count(),
segmentTypes.begin() , segmentData.begin(),
segmentStrokes.begin()),
"Could not set path segments.");
// Set the closed and filled properties of the figure.
HRM(figure->SetIsClosed(stroke), "Could not set path closed.");
HRM(figure->SetIsFilled(fill), "Could not set path fill.");
// Add the figure created above to this geometry.
HRM(figures->Append(figure), "Could not add path to geometry.");
return S_OK;
}
HRESULT SkXPSDevice::addXpsPathGeometry(
IXpsOMGeometryFigureCollection* xpsFigures,
BOOL stroke, BOOL fill, const SkPath& path) {
SkTDArray<XPS_SEGMENT_TYPE> segmentTypes;
SkTDArray<BOOL> segmentStrokes;
SkTDArray<FLOAT> segmentData;
SkTScopedComPtr<IXpsOMGeometryFigure> xpsFigure;
SkPath::Iter iter(path, true);
SkPoint points[4];
SkPath::Verb verb;
while ((verb = iter.next(points)) != SkPath::kDone_Verb) {
switch (verb) {
case SkPath::kMove_Verb: {
if (NULL != xpsFigure.get()) {
HR(close_figure(segmentTypes, segmentStrokes, segmentData,
stroke, fill,
xpsFigure.get() , xpsFigures));
xpsFigure.reset();
segmentTypes.rewind();
segmentStrokes.rewind();
segmentData.rewind();
}
// Define the start point.
XPS_POINT startPoint = xps_point(points[0]);
// Create the figure.
HRM(this->fXpsFactory->CreateGeometryFigure(&startPoint,
&xpsFigure),
"Could not create path geometry figure.");
break;
}
case SkPath::kLine_Verb:
if (iter.isCloseLine()) break; //ignore the line, auto-closed
segmentTypes.push(XPS_SEGMENT_TYPE_LINE);
segmentStrokes.push(stroke);
segmentData.push(SkScalarToFLOAT(points[1].fX));
segmentData.push(SkScalarToFLOAT(points[1].fY));
break;
case SkPath::kQuad_Verb:
segmentTypes.push(XPS_SEGMENT_TYPE_QUADRATIC_BEZIER);
segmentStrokes.push(stroke);
segmentData.push(SkScalarToFLOAT(points[1].fX));
segmentData.push(SkScalarToFLOAT(points[1].fY));
segmentData.push(SkScalarToFLOAT(points[2].fX));
segmentData.push(SkScalarToFLOAT(points[2].fY));
break;
case SkPath::kCubic_Verb:
segmentTypes.push(XPS_SEGMENT_TYPE_BEZIER);
segmentStrokes.push(stroke);
segmentData.push(SkScalarToFLOAT(points[1].fX));
segmentData.push(SkScalarToFLOAT(points[1].fY));
segmentData.push(SkScalarToFLOAT(points[2].fX));
segmentData.push(SkScalarToFLOAT(points[2].fY));
segmentData.push(SkScalarToFLOAT(points[3].fX));
segmentData.push(SkScalarToFLOAT(points[3].fY));
break;
case SkPath::kClose_Verb:
// we ignore these, and just get the whole segment from
// the corresponding line/quad/cubic verbs
break;
default:
SkASSERT(!"unexpected verb");
break;
}
}
if (NULL != xpsFigure.get()) {
HR(close_figure(segmentTypes, segmentStrokes, segmentData,
stroke, fill,
xpsFigure.get(), xpsFigures));
}
return S_OK;
}
HRESULT SkXPSDevice::drawInverseWindingPath(const SkDraw& d,
const SkPath& devicePath,
IXpsOMPath* shadedPath) {
const SkRect universeRect = SkRect::MakeLTRB(0, 0,
this->fCurrentCanvasSize.fWidth, this->fCurrentCanvasSize.fHeight);
const XPS_RECT universeRectXps = {
0.0f, 0.0f,
SkScalarToFLOAT(this->fCurrentCanvasSize.fWidth),
SkScalarToFLOAT(this->fCurrentCanvasSize.fHeight),
};
//Get the geometry.
SkTScopedComPtr<IXpsOMGeometry> shadedGeometry;
HRM(shadedPath->GetGeometry(&shadedGeometry),
"Could not get shaded geometry for inverse path.");
//Get the figures from the geometry.
SkTScopedComPtr<IXpsOMGeometryFigureCollection> shadedFigures;
HRM(shadedGeometry->GetFigures(&shadedFigures),
"Could not get shaded figures for inverse path.");
HRM(shadedGeometry->SetFillRule(XPS_FILL_RULE_NONZERO),
"Could not set shaded fill rule for inverse path.");
//Take everything drawn so far, and make a shared resource out of it.
//Replace everything drawn so far with
//inverse canvas
// old canvas of everything so far
// world shaded figure, clipped to current clip
// top canvas of everything so far, clipped to path
//Note: this is not quite right when there is nothing solid in the
//canvas of everything so far, as the bit on top will allow
//the world paint to show through.
//Create new canvas.
SkTScopedComPtr<IXpsOMCanvas> newCanvas;
HRM(this->fXpsFactory->CreateCanvas(&newCanvas),
"Could not create inverse canvas.");
//Save the old canvas to a dictionary on the new canvas.
SkTScopedComPtr<IXpsOMDictionary> newDictionary;
HRM(this->fXpsFactory->CreateDictionary(&newDictionary),
"Could not create inverse dictionary.");
HRM(newCanvas->SetDictionaryLocal(newDictionary.get()),
"Could not set inverse dictionary.");
const size_t size = SK_ARRAY_COUNT(L"ID" L_GUID_ID);
wchar_t buffer[size];
wchar_t id[GUID_ID_LEN];
HR(create_id(id, GUID_ID_LEN, '_'));
swprintf_s(buffer, size, L"ID%s", id);
HRM(newDictionary->Append(buffer, this->fCurrentXpsCanvas.get()),
"Could not add canvas to inverse dictionary.");
//Start drawing
SkTScopedComPtr<IXpsOMVisualCollection> newVisuals;
HRM(newCanvas->GetVisuals(&newVisuals),
"Could not get inverse canvas visuals.");
//Draw old canvas from dictionary onto new canvas.
SkTScopedComPtr<IXpsOMGeometry> oldGeometry;
HRM(this->fXpsFactory->CreateGeometry(&oldGeometry),
"Could not create old inverse geometry.");
SkTScopedComPtr<IXpsOMGeometryFigureCollection> oldFigures;
HRM(oldGeometry->GetFigures(&oldFigures),
"Could not get old inverse figures.");
SkTScopedComPtr<IXpsOMGeometryFigure> oldFigure;
HR(this->createXpsRect(universeRect, FALSE, TRUE, &oldFigure));
HRM(oldFigures->Append(oldFigure.get()),
"Could not add old inverse figure.");
SkTScopedComPtr<IXpsOMVisualBrush> oldBrush;
HRM(this->fXpsFactory->CreateVisualBrush(&universeRectXps,
&universeRectXps,
&oldBrush),
"Could not create old inverse brush.");
SkTScopedComPtr<IXpsOMPath> oldPath;
HRM(this->fXpsFactory->CreatePath(&oldPath),
"Could not create old inverse path.");
HRM(oldPath->SetGeometryLocal(oldGeometry.get()),
"Could not set old inverse geometry.");
HRM(oldPath->SetFillBrushLocal(oldBrush.get()),
"Could not set old inverse fill brush.");
//the brush must be parented before setting the lookup.
HRM(newVisuals->Append(oldPath.get()),
"Could not add old inverse path to new canvas visuals.");
HRM(oldBrush->SetVisualLookup(buffer),
"Could not set old inverse brush visual lookup.");
//Draw the clip filling shader.
SkTScopedComPtr<IXpsOMGeometryFigure> shadedFigure;
HR(this->createXpsRect(universeRect, FALSE, TRUE, &shadedFigure));
HRM(shadedFigures->Append(shadedFigure.get()),
"Could not add inverse shaded figure.");
//the geometry is already set
HR(this->clip(shadedPath, d));
HRM(newVisuals->Append(shadedPath),
"Could not add inverse shaded path to canvas visuals.");
//Draw the old canvas on top, clipped to the original path.
SkTScopedComPtr<IXpsOMCanvas> topCanvas;
HRM(this->fXpsFactory->CreateCanvas(&topCanvas),
"Could not create top inverse canvas.");
//Clip the canvas to prevent alpha spill.
//This is the entire reason this canvas exists.
HR(this->clip(topCanvas.get(), d));
SkTScopedComPtr<IXpsOMGeometry> topGeometry;
HRM(this->fXpsFactory->CreateGeometry(&topGeometry),
"Could not create top inverse geometry.");
SkTScopedComPtr<IXpsOMGeometryFigureCollection> topFigures;
HRM(topGeometry->GetFigures(&topFigures),
"Could not get top inverse figures.");
SkTScopedComPtr<IXpsOMGeometryFigure> topFigure;
HR(this->createXpsRect(universeRect, FALSE, TRUE, &topFigure));
HRM(topFigures->Append(topFigure.get()),
"Could not add old inverse figure.");
SkTScopedComPtr<IXpsOMVisualBrush> topBrush;
HRM(this->fXpsFactory->CreateVisualBrush(&universeRectXps,
&universeRectXps,
&topBrush),
"Could not create top inverse brush.");
SkTScopedComPtr<IXpsOMPath> topPath;
HRM(this->fXpsFactory->CreatePath(&topPath),
"Could not create top inverse path.");
HRM(topPath->SetGeometryLocal(topGeometry.get()),
"Could not set top inverse geometry.");
HRM(topPath->SetFillBrushLocal(topBrush.get()),
"Could not set top inverse fill brush.");
//the brush must be parented before setting the lookup.
HRM(newVisuals->Append(topCanvas.get()),
"Could not add top canvas to inverse canvas visuals.");
SkTScopedComPtr<IXpsOMVisualCollection> topVisuals;
HRM(topCanvas->GetVisuals(&topVisuals),
"Could not get top inverse canvas visuals.");
HRM(topVisuals->Append(topPath.get()),
"Could not add top inverse path to top canvas visuals.");
HRM(topBrush->SetVisualLookup(buffer),
"Could not set top inverse brush visual lookup.");
HR(this->clipToPath(topPath.get(), devicePath, XPS_FILL_RULE_NONZERO));
//swap current canvas to new canvas
this->fCurrentXpsCanvas.swap(newCanvas);
return S_OK;
}
void SkXPSDevice::convertToPpm(const SkMaskFilter* filter,
SkMatrix* matrix,
SkVector* ppuScale,
const SkIRect& clip, SkIRect* clipIRect) {
//TODO: currently ignoring the ppm if blur ignoring transform.
if (filter) {
SkMaskFilter::BlurInfo blurInfo;
SkMaskFilter::BlurType blurType = filter->asABlur(&blurInfo);
if (SkMaskFilter::kNone_BlurType != blurType
&& blurInfo.fIgnoreTransform) {
ppuScale->fX = SK_Scalar1;
ppuScale->fY = SK_Scalar1;
*clipIRect = clip;
return;
}
}
//This action is in unit space, but the ppm is specified in physical space.
ppuScale->fX = SkScalarDiv(this->fCurrentPixelsPerMeter.fX,
this->fCurrentUnitsPerMeter.fX);
ppuScale->fY = SkScalarDiv(this->fCurrentPixelsPerMeter.fY,
this->fCurrentUnitsPerMeter.fY);
matrix->postScale(ppuScale->fX, ppuScale->fY);
const SkIRect& irect = clip;
SkRect clipRect = SkRect::MakeLTRB(
SkScalarMul(SkIntToScalar(irect.fLeft), ppuScale->fX),
SkScalarMul(SkIntToScalar(irect.fTop), ppuScale->fY),
SkScalarMul(SkIntToScalar(irect.fRight), ppuScale->fX),
SkScalarMul(SkIntToScalar(irect.fBottom), ppuScale->fY));
clipRect.roundOut(clipIRect);
}
HRESULT SkXPSDevice::applyMask(const SkDraw& d,
const SkMask& mask,
const SkVector& ppuScale,
IXpsOMPath* shadedPath) {
//Get the geometry object.
SkTScopedComPtr<IXpsOMGeometry> shadedGeometry;
HRM(shadedPath->GetGeometry(&shadedGeometry),
"Could not get mask shaded geometry.");
//Get the figures from the geometry.
SkTScopedComPtr<IXpsOMGeometryFigureCollection> shadedFigures;
HRM(shadedGeometry->GetFigures(&shadedFigures),
"Could not get mask shaded figures.");
SkMatrix m;
m.reset();
m.setTranslate(SkIntToScalar(mask.fBounds.fLeft),
SkIntToScalar(mask.fBounds.fTop));
m.postScale(SkScalarInvert(ppuScale.fX), SkScalarInvert(ppuScale.fY));
SkShader::TileMode xy[2];
xy[0] = (SkShader::TileMode)3;
xy[1] = (SkShader::TileMode)3;
SkBitmap bm;
bm.setConfig(SkBitmap::kA8_Config,
mask.fBounds.width(),
mask.fBounds.height(),
mask.fRowBytes);
bm.setPixels(mask.fImage);
SkTScopedComPtr<IXpsOMTileBrush> maskBrush;
HR(this->createXpsImageBrush(bm, m, xy, 0xFF, &maskBrush));
HRM(shadedPath->SetOpacityMaskBrushLocal(maskBrush.get()),
"Could not set mask.");
const SkRect universeRect = SkRect::MakeLTRB(0, 0,
this->fCurrentCanvasSize.fWidth, this->fCurrentCanvasSize.fHeight);
SkTScopedComPtr<IXpsOMGeometryFigure> shadedFigure;
HRM(this->createXpsRect(universeRect, FALSE, TRUE, &shadedFigure),
"Could not create mask shaded figure.");
HRM(shadedFigures->Append(shadedFigure.get()),
"Could not add mask shaded figure.");
HR(this->clip(shadedPath, d));
//Add the path to the active visual collection.
SkTScopedComPtr<IXpsOMVisualCollection> currentVisuals;
HRM(this->fCurrentXpsCanvas->GetVisuals(&currentVisuals),
"Could not get mask current visuals.");
HRM(currentVisuals->Append(shadedPath),
"Could not add masked shaded path to current visuals.");
return S_OK;
}
HRESULT SkXPSDevice::shadePath(IXpsOMPath* shadedPath,
const SkPaint& shaderPaint,
const SkMatrix& matrix,
BOOL* fill, BOOL* stroke) {
*fill = FALSE;
*stroke = FALSE;
const SkPaint::Style style = shaderPaint.getStyle();
const bool hasFill = SkPaint::kFill_Style == style
|| SkPaint::kStrokeAndFill_Style == style;
const bool hasStroke = SkPaint::kStroke_Style == style
|| SkPaint::kStrokeAndFill_Style == style;
//TODO(bungeman): use dictionaries and lookups.
if (hasFill) {
*fill = TRUE;
SkTScopedComPtr<IXpsOMBrush> fillBrush;
HR(this->createXpsBrush(shaderPaint, &fillBrush, &matrix));
HRM(shadedPath->SetFillBrushLocal(fillBrush.get()),
"Could not set fill for shaded path.");
}
if (hasStroke) {
*stroke = TRUE;
SkTScopedComPtr<IXpsOMBrush> strokeBrush;
HR(this->createXpsBrush(shaderPaint, &strokeBrush, &matrix));
HRM(shadedPath->SetStrokeBrushLocal(strokeBrush.get()),
"Could not set stroke brush for shaded path.");
HRM(shadedPath->SetStrokeThickness(
SkScalarToFLOAT(shaderPaint.getStrokeWidth())),
"Could not set shaded path stroke thickness.");
if (0 == shaderPaint.getStrokeWidth()) {
//XPS hair width is a hack. (XPS Spec 11.6.12).
SkTScopedComPtr<IXpsOMDashCollection> dashes;
HRM(shadedPath->GetStrokeDashes(&dashes),
"Could not set dashes for shaded path.");
XPS_DASH dash;
dash.length = 1.0;
dash.gap = 0.0;
HRM(dashes->Append(&dash), "Could not add dashes to shaded path.");
HRM(shadedPath->SetStrokeDashOffset(-2.0),
"Could not set dash offset for shaded path.");
}
}
return S_OK;
}
void SkXPSDevice::drawPath(const SkDraw& d,
const SkPath& platonicPath,
const SkPaint& paint,
const SkMatrix* prePathMatrix,
bool pathIsMutable) {
// nothing to draw
if (d.fClip->isEmpty() ||
(paint.getAlpha() == 0 && paint.getXfermode() == NULL)) {
return;
}
SkPath modifiedPath;
const bool paintHasPathEffect = paint.getPathEffect()
|| paint.getStyle() != SkPaint::kFill_Style;
//Apply pre-path matrix [Platonic-path -> Skeletal-path].
SkMatrix matrix = *d.fMatrix;
SkPath* skeletalPath = const_cast<SkPath*>(&platonicPath);
if (prePathMatrix) {
if (paintHasPathEffect || paint.getRasterizer()) {
if (!pathIsMutable) {
skeletalPath = &modifiedPath;
pathIsMutable = true;
}
platonicPath.transform(*prePathMatrix, skeletalPath);
} else {
if (!matrix.preConcat(*prePathMatrix)) {
return;
}
}
}
SkTLazy<SkPaint> modifiedPaint;
SkPaint* shaderPaint = const_cast<SkPaint*>(&paint);
//Apply path effect [Skeletal-path -> Fillable-path].
SkPath* fillablePath = skeletalPath;
if (paintHasPathEffect) {
if (!pathIsMutable) {
fillablePath = &modifiedPath;
pathIsMutable = true;
}
bool fill = paint.getFillPath(*skeletalPath, fillablePath);
shaderPaint = modifiedPaint.set(paint);
shaderPaint->setPathEffect(NULL);
if (fill) {
shaderPaint->setStyle(SkPaint::kFill_Style);
} else {
shaderPaint->setStyle(SkPaint::kStroke_Style);
shaderPaint->setStrokeWidth(0);
}
}
//Create the shaded path. This will be the path which is painted.
SkTScopedComPtr<IXpsOMPath> shadedPath;
HRVM(this->fXpsFactory->CreatePath(&shadedPath),
"Could not create shaded path for path.");
//Create the geometry for the shaded path.
SkTScopedComPtr<IXpsOMGeometry> shadedGeometry;
HRVM(this->fXpsFactory->CreateGeometry(&shadedGeometry),
"Could not create shaded geometry for path.");
//Add the geometry to the shaded path.
HRVM(shadedPath->SetGeometryLocal(shadedGeometry.get()),
"Could not add the shaded geometry to shaded path.");
//Set the brushes.
BOOL fill;
BOOL stroke;
HRV(this->shadePath(shadedPath.get(),
*shaderPaint,
*d.fMatrix,
&fill,
&stroke));
SkMaskFilter* filter = paint.getMaskFilter();
//Rasterizer
if (paint.getRasterizer()) {
SkIRect clipIRect;
SkVector ppuScale;
this->convertToPpm(filter,
&matrix,
&ppuScale,
d.fClip->getBounds(),
&clipIRect);
SkMask* mask = NULL;
//[Fillable-path -> Mask]
SkMask rasteredMask;
if (paint.getRasterizer()->rasterize(
*fillablePath,
matrix,
&clipIRect,
filter, //just to compute how much to draw.
&rasteredMask,
SkMask::kComputeBoundsAndRenderImage_CreateMode)) {
SkAutoMaskFreeImage rasteredAmi(rasteredMask.fImage);
mask = &rasteredMask;
//[Mask -> Mask]
SkMask filteredMask;
if (filter &&
filter->filterMask(&filteredMask, *mask, *d.fMatrix, NULL)) {
mask = &filteredMask;
} else {
filteredMask.fImage = NULL;
}
SkAutoMaskFreeImage filteredAmi(filteredMask.fImage);
//Draw mask.
HRV(this->applyMask(d, *mask, ppuScale, shadedPath.get()));
}
return;
}
//Mask filter
if (filter) {
SkIRect clipIRect;
SkVector ppuScale;
this->convertToPpm(filter,
&matrix,
&ppuScale,
d.fClip->getBounds(),
&clipIRect);
//[Fillable-path -> Pixel-path]
SkPath* pixelPath = pathIsMutable ? fillablePath : &modifiedPath;
fillablePath->transform(matrix, pixelPath);
SkMask* mask = NULL;
//[Pixel-path -> Mask]
SkMask rasteredMask;
if (SkDraw::DrawToMask(
*pixelPath,
&clipIRect,
filter, //just to compute how much to draw.
&matrix,
&rasteredMask,
SkMask::kComputeBoundsAndRenderImage_CreateMode)) {
SkAutoMaskFreeImage rasteredAmi(rasteredMask.fImage);
mask = &rasteredMask;
//[Mask -> Mask]
SkMask filteredMask;
if (filter->filterMask(&filteredMask,
rasteredMask,
matrix,
NULL)) {
mask = &filteredMask;
} else {
filteredMask.fImage = NULL;
}
SkAutoMaskFreeImage filteredAmi(filteredMask.fImage);
//Draw mask.
HRV(this->applyMask(d, *mask, ppuScale, shadedPath.get()));
}
return;
}
//Get the figures from the shaded geometry.
SkTScopedComPtr<IXpsOMGeometryFigureCollection> shadedFigures;
HRVM(shadedGeometry->GetFigures(&shadedFigures),
"Could not get shaded figures for shaded path.");
bool xpsTransformsPath = true;
//Set the fill rule.
XPS_FILL_RULE xpsFillRule;
switch (platonicPath.getFillType()) {
case SkPath::kWinding_FillType:
xpsFillRule = XPS_FILL_RULE_NONZERO;
break;
case SkPath::kEvenOdd_FillType:
xpsFillRule = XPS_FILL_RULE_EVENODD;
break;
case SkPath::kInverseWinding_FillType: {
//[Fillable-path -> Device-path]
SkPath* devicePath = pathIsMutable ? fillablePath : &modifiedPath;
fillablePath->transform(matrix, devicePath);
HRV(this->drawInverseWindingPath(d,
*devicePath,
shadedPath.get()));
return;
}
case SkPath::kInverseEvenOdd_FillType: {
const SkRect universe = SkRect::MakeLTRB(
0, 0,
this->fCurrentCanvasSize.fWidth,
this->fCurrentCanvasSize.fHeight);
SkTScopedComPtr<IXpsOMGeometryFigure> addOneFigure;
HRV(this->createXpsRect(universe, FALSE, TRUE, &addOneFigure));
HRVM(shadedFigures->Append(addOneFigure.get()),
"Could not add even-odd flip figure to shaded path.");
xpsTransformsPath = false;
xpsFillRule = XPS_FILL_RULE_EVENODD;
break;
}
default:
SkASSERT(!"Unknown SkPath::FillType.");
}
HRVM(shadedGeometry->SetFillRule(xpsFillRule),
"Could not set fill rule for shaded path.");
//Create the XPS transform, if possible.
if (xpsTransformsPath) {
SkTScopedComPtr<IXpsOMMatrixTransform> xpsTransform;
HRV(this->createXpsTransform(matrix, &xpsTransform));
if (xpsTransform.get()) {
HRVM(shadedGeometry->SetTransformLocal(xpsTransform.get()),
"Could not set transform on shaded path.");
} else {
xpsTransformsPath = false;
}
}
SkPath* devicePath = fillablePath;
if (!xpsTransformsPath) {
//[Fillable-path -> Device-path]
devicePath = pathIsMutable ? fillablePath : &modifiedPath;
fillablePath->transform(matrix, devicePath);
}
HRV(this->addXpsPathGeometry(shadedFigures.get(),
stroke, fill, *devicePath));
HRV(this->clip(shadedPath.get(), d));
//Add the path to the active visual collection.
SkTScopedComPtr<IXpsOMVisualCollection> currentVisuals;
HRVM(this->fCurrentXpsCanvas->GetVisuals(&currentVisuals),
"Could not get current visuals for shaded path.");
HRVM(currentVisuals->Append(shadedPath.get()),
"Could not add shaded path to current visuals.");
}
HRESULT SkXPSDevice::clip(IXpsOMVisual* xpsVisual, const SkDraw& d) {
SkPath clipPath;
SkAssertResult(d.fClip->getBoundaryPath(&clipPath));
return this->clipToPath(xpsVisual, clipPath, XPS_FILL_RULE_EVENODD);
}
HRESULT SkXPSDevice::clipToPath(IXpsOMVisual* xpsVisual,
const SkPath& clipPath,
XPS_FILL_RULE fillRule) {
//Create the geometry.
SkTScopedComPtr<IXpsOMGeometry> clipGeometry;
HRM(this->fXpsFactory->CreateGeometry(&clipGeometry),
"Could not create clip geometry.");
//Get the figure collection of the geometry.
SkTScopedComPtr<IXpsOMGeometryFigureCollection> clipFigures;
HRM(clipGeometry->GetFigures(&clipFigures),
"Could not get the clip figures.");
//Create the figures into the geometry.
HR(this->addXpsPathGeometry(
clipFigures.get(),
FALSE, TRUE, clipPath));
HRM(clipGeometry->SetFillRule(fillRule),
"Could not set fill rule.");
HRM(xpsVisual->SetClipGeometryLocal(clipGeometry.get()),
"Could not set clip geometry.");
return S_OK;
}
void SkXPSDevice::drawBitmap(const SkDraw& d, const SkBitmap& bitmap,
const SkIRect* srcRectOrNull,
const SkMatrix& matrix, const SkPaint& paint) {
if (d.fClip->isEmpty()) {
return;
}
SkIRect srcRect;
SkBitmap tmp;
const SkBitmap* bitmapPtr = &bitmap;
if (NULL == srcRectOrNull) {
srcRect.set(0, 0, bitmap.width(), bitmap.height());
bitmapPtr = &bitmap;
} else {
srcRect = *srcRectOrNull;
if (!bitmap.extractSubset(&tmp, srcRect)) {
return; // extraction failed
}
bitmapPtr = &tmp;
}
//Create the new shaded path.
SkTScopedComPtr<IXpsOMPath> shadedPath;
HRVM(this->fXpsFactory->CreatePath(&shadedPath),
"Could not create path for bitmap.");
//Create the shaded geometry.
SkTScopedComPtr<IXpsOMGeometry> shadedGeometry;
HRVM(this->fXpsFactory->CreateGeometry(&shadedGeometry),
"Could not create geometry for bitmap.");
//Add the shaded geometry to the shaded path.
HRVM(shadedPath->SetGeometryLocal(shadedGeometry.get()),
"Could not set the geometry for bitmap.");
//Get the shaded figures from the shaded geometry.
SkTScopedComPtr<IXpsOMGeometryFigureCollection> shadedFigures;
HRVM(shadedGeometry->GetFigures(&shadedFigures),
"Could not get the figures for bitmap.");
SkMatrix transform = matrix;
transform.postConcat(*d.fMatrix);
SkTScopedComPtr<IXpsOMMatrixTransform> xpsTransform;
HRV(this->createXpsTransform(transform, &xpsTransform));
if (xpsTransform.get()) {
HRVM(shadedGeometry->SetTransformLocal(xpsTransform.get()),
"Could not set transform for bitmap.");
} else {
//TODO: perspective that bitmap!
}
SkTScopedComPtr<IXpsOMGeometryFigure> rectFigure;
if (NULL != xpsTransform.get()) {
const SkShader::TileMode xy[2] = {
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode,
};
SkTScopedComPtr<IXpsOMTileBrush> xpsImageBrush;
HRV(this->createXpsImageBrush(*bitmapPtr,
transform,
xy,
paint.getAlpha(),
&xpsImageBrush));
HRVM(shadedPath->SetFillBrushLocal(xpsImageBrush.get()),
"Could not set bitmap brush.");
const SkRect bitmapRect = SkRect::MakeLTRB(0, 0,
SkIntToScalar(srcRect.width()), SkIntToScalar(srcRect.height()));
HRV(this->createXpsRect(bitmapRect, FALSE, TRUE, &rectFigure));
}
HRVM(shadedFigures->Append(rectFigure.get()),
"Could not add bitmap figure.");
//Get the current visual collection and add the shaded path to it.
SkTScopedComPtr<IXpsOMVisualCollection> currentVisuals;
HRVM(this->fCurrentXpsCanvas->GetVisuals(&currentVisuals),
"Could not get current visuals for bitmap");
HRVM(currentVisuals->Append(shadedPath.get()),
"Could not add bitmap to current visuals.");
HRV(this->clip(shadedPath.get(), d));
}
void SkXPSDevice::drawSprite(const SkDraw&, const SkBitmap& bitmap,
int x, int y,
const SkPaint& paint) {
//TODO: override this for XPS
SkDEBUGF(("XPS drawSprite not yet implemented."));
}
HRESULT SkXPSDevice::CreateTypefaceUse(const SkPaint& paint,
TypefaceUse** typefaceUse) {
const SkTypeface* typeface = paint.getTypeface();
//Check cache.
const SkFontID typefaceID = SkTypeface::UniqueID(typeface);
if (!this->fTypefaces.empty()) {
TypefaceUse* current = &this->fTypefaces.front();
const TypefaceUse* last = &this->fTypefaces.back();
for (; current <= last; ++current) {
if (current->typefaceId == typefaceID) {
*typefaceUse = current;
return S_OK;
}
}
}
//TODO: create glyph only fonts
//and let the host deal with what kind of font we're looking at.
XPS_FONT_EMBEDDING embedding = XPS_FONT_EMBEDDING_RESTRICTED;
SkTScopedComPtr<IStream> fontStream;
SkStream* fontData = SkFontHost::OpenStream(typefaceID);
HRM(SkIStream::CreateFromSkStream(fontData,
true,
&fontStream),
"Could not create font stream.");
const size_t size =
SK_ARRAY_COUNT(L"/Resources/Fonts/" L_GUID_ID L".odttf");
wchar_t buffer[size];
wchar_t id[GUID_ID_LEN];
HR(create_id(id, GUID_ID_LEN));
swprintf_s(buffer, size, L"/Resources/Fonts/%s.odttf", id);
SkTScopedComPtr<IOpcPartUri> partUri;
HRM(this->fXpsFactory->CreatePartUri(buffer, &partUri),
"Could not create font resource part uri.");
SkTScopedComPtr<IXpsOMFontResource> xpsFontResource;
HRM(this->fXpsFactory->CreateFontResource(fontStream.get(),
embedding,
partUri.get(),
FALSE,
&xpsFontResource),
"Could not create font resource.");
TypefaceUse& newTypefaceUse = this->fTypefaces.push_back();
newTypefaceUse.typefaceId = typefaceID;
newTypefaceUse.fontData = fontData;
newTypefaceUse.xpsFont = xpsFontResource.release();
SkAutoGlyphCache agc = SkAutoGlyphCache(paint, &SkMatrix::I());
SkGlyphCache* glyphCache = agc.getCache();
unsigned int glyphCount = glyphCache->getGlyphCount();
newTypefaceUse.glyphsUsed = new SkBitSet(glyphCount);
*typefaceUse = &newTypefaceUse;
return S_OK;
}
HRESULT SkXPSDevice::AddGlyphs(const SkDraw& d,
IXpsOMObjectFactory* xpsFactory,
IXpsOMCanvas* canvas,
IXpsOMFontResource* font,
LPCWSTR text,
XPS_GLYPH_INDEX* xpsGlyphs,
UINT32 xpsGlyphsLen,
XPS_POINT *origin,
FLOAT fontSize,
XPS_STYLE_SIMULATION sims,
const SkMatrix& transform,
const SkPaint& paint) {
SkTScopedComPtr<IXpsOMGlyphs> glyphs;
HRM(xpsFactory->CreateGlyphs(font, &glyphs), "Could not create glyphs.");
//XPS uses affine transformations for everything...
//...except positioning text.
bool useCanvasForClip;
if ((transform.getType() & ~SkMatrix::kTranslate_Mask) == 0) {
origin->x += SkScalarToFLOAT(transform.getTranslateX());
origin->y += SkScalarToFLOAT(transform.getTranslateY());
useCanvasForClip = false;
} else {
SkTScopedComPtr<IXpsOMMatrixTransform> xpsMatrixToUse;
HR(this->createXpsTransform(transform, &xpsMatrixToUse));
if (xpsMatrixToUse.get()) {
HRM(glyphs->SetTransformLocal(xpsMatrixToUse.get()),
"Could not set transform matrix.");
useCanvasForClip = true;
} else {
SkASSERT(!"Attempt to add glyphs in perspective.");
useCanvasForClip = false;
}
}
SkTScopedComPtr<IXpsOMGlyphsEditor> glyphsEditor;
HRM(glyphs->GetGlyphsEditor(&glyphsEditor), "Could not get glyph editor.");
if (NULL != text) {
HRM(glyphsEditor->SetUnicodeString(text),
"Could not set unicode string.");
}
if (NULL != xpsGlyphs) {
HRM(glyphsEditor->SetGlyphIndices(xpsGlyphsLen, xpsGlyphs),
"Could not set glyphs.");
}
HRM(glyphsEditor->ApplyEdits(), "Could not apply glyph edits.");
SkTScopedComPtr<IXpsOMBrush> xpsFillBrush;
HR(this->createXpsBrush(
paint,
&xpsFillBrush,
useCanvasForClip ? NULL : &transform));
HRM(glyphs->SetFillBrushLocal(xpsFillBrush.get()),
"Could not set fill brush.");
HRM(glyphs->SetOrigin(origin), "Could not set glyph origin.");
HRM(glyphs->SetFontRenderingEmSize(fontSize),
"Could not set font size.");
HRM(glyphs->SetStyleSimulations(sims),
"Could not set style simulations.");
SkTScopedComPtr<IXpsOMVisualCollection> visuals;
HRM(canvas->GetVisuals(&visuals), "Could not get glyph canvas visuals.");
if (!useCanvasForClip) {
HR(this->clip(glyphs.get(), d));
HRM(visuals->Append(glyphs.get()), "Could not add glyphs to canvas.");
} else {
SkTScopedComPtr<IXpsOMCanvas> glyphCanvas;
HRM(this->fXpsFactory->CreateCanvas(&glyphCanvas),
"Could not create glyph canvas.");
SkTScopedComPtr<IXpsOMVisualCollection> glyphCanvasVisuals;
HRM(glyphCanvas->GetVisuals(&glyphCanvasVisuals),
"Could not get glyph visuals collection.");
HRM(glyphCanvasVisuals->Append(glyphs.get()),
"Could not add glyphs to page.");
HR(this->clip(glyphCanvas.get(), d));
HRM(visuals->Append(glyphCanvas.get()),
"Could not add glyph canvas to page.");
}
return S_OK;
}
struct SkXPSDrawProcs : public SkDrawProcs {
public:
/** [in] Advance width and offsets for glyphs measured in
hundredths of the font em size (XPS Spec 5.1.3). */
FLOAT centemPerUnit;
/** [in,out] The accumulated glyphs used in the current typeface. */
SkBitSet* glyphUse;
/** [out] The glyphs to draw. */
SkTDArray<XPS_GLYPH_INDEX> xpsGlyphs;
};
static void xps_draw_1_glyph(const SkDraw1Glyph& state,
SkFixed x, SkFixed y,
const SkGlyph& skGlyph) {
SkASSERT(skGlyph.fWidth > 0 && skGlyph.fHeight > 0);
SkXPSDrawProcs* procs = static_cast<SkXPSDrawProcs*>(state.fDraw->fProcs);
//Draw pre-adds half for floor rounding.
x -= SK_FixedHalf;
y -= SK_FixedHalf;
XPS_GLYPH_INDEX* xpsGlyph = procs->xpsGlyphs.append();
uint16_t glyphID = skGlyph.getGlyphID();
procs->glyphUse->setBit(glyphID, true);
xpsGlyph->index = glyphID;
if (1 == procs->xpsGlyphs.count()) {
xpsGlyph->advanceWidth = 0.0f;
xpsGlyph->horizontalOffset = SkFixedToFloat(x) * procs->centemPerUnit;
xpsGlyph->verticalOffset = SkFixedToFloat(y) * -procs->centemPerUnit;
} else {
const XPS_GLYPH_INDEX& first = procs->xpsGlyphs[0];
xpsGlyph->advanceWidth = 0.0f;
xpsGlyph->horizontalOffset = (SkFixedToFloat(x) * procs->centemPerUnit)
- first.horizontalOffset;
xpsGlyph->verticalOffset = (SkFixedToFloat(y) * -procs->centemPerUnit)
- first.verticalOffset;
}
}
static void text_draw_init(const SkPaint& paint,
const void* text, size_t byteLength,
SkBitSet& glyphsUsed,
SkDraw& myDraw, SkXPSDrawProcs& procs) {
procs.fD1GProc = xps_draw_1_glyph;
int numGlyphGuess;
switch (paint.getTextEncoding()) {
case SkPaint::kUTF8_TextEncoding:
numGlyphGuess = SkUTF8_CountUnichars(
static_cast<const char *>(text),
byteLength);
break;
case SkPaint::kUTF16_TextEncoding:
numGlyphGuess = SkUTF16_CountUnichars(
static_cast<const uint16_t *>(text),
byteLength);
break;
case SkPaint::kGlyphID_TextEncoding:
numGlyphGuess = byteLength / 2;
break;
default:
SK_DEBUGBREAK(true);
}
procs.xpsGlyphs.setReserve(numGlyphGuess);
procs.glyphUse = &glyphsUsed;
procs.centemPerUnit = 100.0f / SkScalarToFLOAT(paint.getTextSize());
myDraw.fProcs = &procs;
myDraw.fMVMatrix = &SkMatrix::I();
myDraw.fExtMatrix = &SkMatrix::I();
}
static bool text_must_be_pathed(const SkPaint& paint, const SkMatrix& matrix) {
const SkPaint::Style style = paint.getStyle();
return matrix.hasPerspective()
|| SkPaint::kStroke_Style == style
|| SkPaint::kStrokeAndFill_Style == style
|| paint.getMaskFilter()
|| paint.getRasterizer()
;
}
void SkXPSDevice::drawText(const SkDraw& d,
const void* text, size_t byteLen,
SkScalar x, SkScalar y,
const SkPaint& paint) {
if (byteLen < 1) return;
if (text_must_be_pathed(paint, *d.fMatrix)) {
SkPath path;
paint.getTextPath(text, byteLen, x, y, &path);
this->drawPath(d, path, paint, NULL, true);
//TODO: add automation "text"
return;
}
TypefaceUse* typeface;
HRV(CreateTypefaceUse(paint, &typeface));
SkDraw myDraw(d);
SkXPSDrawProcs procs;
text_draw_init(paint, text, byteLen, *typeface->glyphsUsed, myDraw, procs);
myDraw.drawText(static_cast<const char*>(text), byteLen, x, y, paint);
XPS_POINT origin = {
procs.xpsGlyphs[0].horizontalOffset / procs.centemPerUnit,
procs.xpsGlyphs[0].verticalOffset / -procs.centemPerUnit,
};
procs.xpsGlyphs[0].horizontalOffset = 0.0f;
procs.xpsGlyphs[0].verticalOffset = 0.0f;
HRV(AddGlyphs(d,
this->fXpsFactory.get(),
this->fCurrentXpsCanvas.get(),
typeface->xpsFont,
NULL,
procs.xpsGlyphs.begin(), procs.xpsGlyphs.count(),
&origin,
SkScalarToFLOAT(paint.getTextSize()),
XPS_STYLE_SIMULATION_NONE,
*d.fMatrix,
paint));
}
void SkXPSDevice::drawPosText(const SkDraw& d,
const void* text, size_t byteLen,
const SkScalar pos[],
SkScalar constY, int scalarsPerPos,
const SkPaint& paint) {
if (byteLen < 1) return;
if (text_must_be_pathed(paint, *d.fMatrix)) {
SkPath path;
//TODO: make this work, Draw currently does not handle as well.
//paint.getTextPath(text, byteLength, x, y, &path);
//this->drawPath(d, path, paint, NULL, true);
//TODO: add automation "text"
return;
}
TypefaceUse* typeface;
HRV(CreateTypefaceUse(paint, &typeface));
SkDraw myDraw(d);
SkXPSDrawProcs procs;
text_draw_init(paint, text, byteLen, *typeface->glyphsUsed, myDraw, procs);
myDraw.drawPosText(static_cast<const char*>(text), byteLen,
pos, constY, scalarsPerPos,
paint);
XPS_POINT origin = {
procs.xpsGlyphs[0].horizontalOffset / procs.centemPerUnit,
procs.xpsGlyphs[0].verticalOffset / -procs.centemPerUnit,
};
procs.xpsGlyphs[0].horizontalOffset = 0.0f;
procs.xpsGlyphs[0].verticalOffset = 0.0f;
HRV(AddGlyphs(d,
this->fXpsFactory.get(),
this->fCurrentXpsCanvas.get(),
typeface->xpsFont,
NULL,
procs.xpsGlyphs.begin(), procs.xpsGlyphs.count(),
&origin,
SkScalarToFLOAT(paint.getTextSize()),
XPS_STYLE_SIMULATION_NONE,
*d.fMatrix,
paint));
}
void SkXPSDevice::drawTextOnPath(const SkDraw& d, const void* text, size_t len,
const SkPath& path, const SkMatrix* matrix,
const SkPaint& paint) {
//This will call back into the device to do the drawing.
d.drawTextOnPath((const char*)text, len, path, matrix, paint);
}
void SkXPSDevice::drawDevice(const SkDraw& d, SkDevice* dev,
int x, int y,
const SkPaint&) {
SkXPSDevice* that = static_cast<SkXPSDevice*>(dev);
SkTScopedComPtr<IXpsOMMatrixTransform> xpsTransform;
XPS_MATRIX rawTransform = {
1.0f,
0.0f,
0.0f,
1.0f,
static_cast<FLOAT>(x),
static_cast<FLOAT>(y),
};
HRVM(this->fXpsFactory->CreateMatrixTransform(&rawTransform, &xpsTransform),
"Could not create layer transform.");
HRVM(that->fCurrentXpsCanvas->SetTransformLocal(xpsTransform.get()),
"Could not set layer transform.");
//Get the current visual collection and add the layer to it.
SkTScopedComPtr<IXpsOMVisualCollection> currentVisuals;
HRVM(this->fCurrentXpsCanvas->GetVisuals(&currentVisuals),
"Could not get current visuals for layer.");
HRVM(currentVisuals->Append(that->fCurrentXpsCanvas.get()),
"Could not add layer to current visuals.");
}
SkDevice* SkXPSDevice::onCreateCompatibleDevice(SkBitmap::Config config,
int width, int height,
bool isOpaque,
Usage usage) {
if (SkDevice::kGeneral_Usage == usage) {
SK_CRASH();
//To what stream do we write?
//SkXPSDevice* dev = new SkXPSDevice(this);
//SkSize s = SkSize::Make(width, height);
//dev->BeginCanvas(s, s, SkMatrix::I());
//return dev;
}
return new SkXPSDevice(this->fXpsFactory.get());
}
SkXPSDevice::SkXPSDevice(IXpsOMObjectFactory* xpsFactory)
: SkDevice(make_fake_bitmap(10000, 10000))
, fCurrentPage(0) {
HRVM(CoCreateInstance(
CLSID_XpsOMObjectFactory,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&this->fXpsFactory)),
"Could not create factory for layer.");
HRVM(this->fXpsFactory->CreateCanvas(&this->fCurrentXpsCanvas),
"Could not create canvas for layer.");
}