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office-gobmx/vcl/skia/win/gdiimpl.cxx
Mike Kaganski 9bbecbaea3 Use COMReference in D2DWriteTextOutRenderer 
... and simplify the related code.

Change-Id: Idaef7c9d725273e202948158e45ded7e7a2f85a0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165985
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
2024-04-11 12:51:50 +02:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/config.h>
#include <skia/win/gdiimpl.hxx>
#include <win/saldata.hxx>
#include <vcl/skia/SkiaHelper.hxx>
#include <skia/utils.hxx>
#include <skia/zone.hxx>
#include <skia/win/font.hxx>
#include <comphelper/scopeguard.hxx>
#include <comphelper/windowserrorstring.hxx>
#include <sal/log.hxx>
#include <SkBitmap.h>
#include <SkCanvas.h>
#include <SkPaint.h>
#include <SkPixelRef.h>
#include <SkTypeface_win.h>
#include <SkFont.h>
#include <SkFontMgr.h>
#include <tools/sk_app/win/WindowContextFactory_win.h>
#include <tools/sk_app/WindowContext.h>
#include <windows.h>
using namespace SkiaHelper;
WinSkiaSalGraphicsImpl::WinSkiaSalGraphicsImpl(WinSalGraphics& rGraphics,
SalGeometryProvider* mpProvider)
: SkiaSalGraphicsImpl(rGraphics, mpProvider)
, mWinParent(rGraphics)
{
}
void WinSkiaSalGraphicsImpl::createWindowSurfaceInternal(bool forceRaster)
{
assert(!mWindowContext);
assert(!mSurface);
SkiaZone zone;
sk_app::DisplayParams displayParams;
assert(GetWidth() > 0 && GetHeight() > 0);
displayParams.fSurfaceProps = *surfaceProps();
switch (forceRaster ? RenderRaster : renderMethodToUse())
{
case RenderRaster:
mWindowContext = sk_app::window_context_factory::MakeRasterForWin(mWinParent.gethWnd(),
displayParams);
if (mWindowContext)
mSurface = mWindowContext->getBackbufferSurface();
break;
case RenderVulkan:
mWindowContext = sk_app::window_context_factory::MakeVulkanForWin(mWinParent.gethWnd(),
displayParams);
// See flushSurfaceToWindowContext().
if (mWindowContext)
mSurface = createSkSurface(GetWidth(), GetHeight());
break;
case RenderMetal:
abort();
break;
}
}
void WinSkiaSalGraphicsImpl::freeResources() {}
void WinSkiaSalGraphicsImpl::Flush() { performFlush(); }
bool WinSkiaSalGraphicsImpl::TryRenderCachedNativeControl(ControlCacheKey const& rControlCacheKey,
int nX, int nY)
{
static bool gbCacheEnabled = !getenv("SAL_WITHOUT_WIDGET_CACHE");
if (!gbCacheEnabled)
return false;
auto& controlsCache = SkiaControlsCache::get();
SkiaControlCacheType::const_iterator iterator = controlsCache.find(rControlCacheKey);
if (iterator == controlsCache.end())
return false;
preDraw();
SAL_INFO("vcl.skia.trace", "tryrendercachednativecontrol("
<< this << "): "
<< SkIRect::MakeXYWH(nX, nY, iterator->second->width(),
iterator->second->height()));
addUpdateRegion(
SkRect::MakeXYWH(nX, nY, iterator->second->width(), iterator->second->height()));
mSurface->getCanvas()->drawImage(iterator->second, nX, nY);
postDraw();
return true;
}
bool WinSkiaSalGraphicsImpl::RenderAndCacheNativeControl(CompatibleDC& rWhite, CompatibleDC& rBlack,
int nX, int nY,
ControlCacheKey& aControlCacheKey)
{
assert(dynamic_cast<SkiaCompatibleDC*>(&rWhite));
assert(dynamic_cast<SkiaCompatibleDC*>(&rBlack));
sk_sp<SkImage> image = static_cast<SkiaCompatibleDC&>(rBlack).getAsImageDiff(
static_cast<SkiaCompatibleDC&>(rWhite));
preDraw();
SAL_INFO("vcl.skia.trace",
"renderandcachednativecontrol("
<< this << "): " << SkIRect::MakeXYWH(nX, nY, image->width(), image->height()));
addUpdateRegion(SkRect::MakeXYWH(nX, nY, image->width(), image->height()));
mSurface->getCanvas()->drawImage(image, nX, nY);
postDraw();
if (!aControlCacheKey.canCacheControl())
return true;
SkiaControlCachePair pair(aControlCacheKey, std::move(image));
SkiaControlsCache::get().insert(std::move(pair));
return true;
}
sk_sp<SkTypeface>
WinSkiaSalGraphicsImpl::createDirectWriteTypeface(const WinFontInstance* pWinFont) try
{
using sal::systools::ThrowIfFailed;
IDWriteFactory* dwriteFactory = WinSalGraphics::getDWriteFactory();
if (!dwriteDone)
{
dwriteFontMgr = SkFontMgr_New_DirectWrite(dwriteFactory);
dwriteDone = true;
}
if (!dwriteFontMgr)
return nullptr;
IDWriteFontFace* fontFace = pWinFont->GetDWFontFace();
if (!fontFace)
return nullptr;
sal::systools::COMReference<IDWriteFontCollection> collection;
ThrowIfFailed(dwriteFactory->GetSystemFontCollection(&collection), SAL_WHERE);
sal::systools::COMReference<IDWriteFont> font;
// As said above, this fails for our fonts.
if (FAILED(collection->GetFontFromFontFace(fontFace, &font)))
{
// If not found in system collection, try our private font collection.
// If that's not possible we'll fall back to Skia's GDI-based font rendering.
if (!dwritePrivateCollection
|| FAILED(dwritePrivateCollection->GetFontFromFontFace(fontFace, &font)))
{
// Our private fonts are installed using AddFontResourceExW( FR_PRIVATE )
// and that does not make them available to the DWrite system font
// collection. For such cases attempt to update a collection of
// private fonts with this newly used font.
sal::systools::COMReference<IDWriteFactory3> dwriteFactory3;
ThrowIfFailed(dwriteFactory->QueryInterface(&dwriteFactory3), SAL_WHERE);
if (!dwriteFontSetBuilder)
ThrowIfFailed(dwriteFactory3->CreateFontSetBuilder(&dwriteFontSetBuilder),
SAL_WHERE);
UINT32 numberOfFiles;
ThrowIfFailed(fontFace->GetFiles(&numberOfFiles, nullptr), SAL_WHERE);
if (numberOfFiles != 1)
return nullptr;
sal::systools::COMReference<IDWriteFontFile> fontFile;
ThrowIfFailed(fontFace->GetFiles(&numberOfFiles, &fontFile), SAL_WHERE);
BOOL isSupported;
DWRITE_FONT_FILE_TYPE fileType;
UINT32 numberOfFonts;
ThrowIfFailed(fontFile->Analyze(&isSupported, &fileType, nullptr, &numberOfFonts),
SAL_WHERE);
if (!isSupported)
return nullptr;
// For each font within the font file, get a font face reference and add to the builder.
for (UINT32 fontIndex = 0; fontIndex < numberOfFonts; ++fontIndex)
{
sal::systools::COMReference<IDWriteFontFaceReference> fontFaceReference;
if (FAILED(dwriteFactory3->CreateFontFaceReference(fontFile.get(), fontIndex,
DWRITE_FONT_SIMULATIONS_NONE,
&fontFaceReference)))
continue;
// Leave it to DirectWrite to read properties directly out of the font files
dwriteFontSetBuilder->AddFontFaceReference(fontFaceReference.get());
}
sal::systools::COMReference<IDWriteFontSet> fontSet;
ThrowIfFailed(dwriteFontSetBuilder->CreateFontSet(&fontSet), SAL_WHERE);
ThrowIfFailed(dwriteFactory3->CreateFontCollectionFromFontSet(fontSet.get(),
&dwritePrivateCollection),
SAL_WHERE);
ThrowIfFailed(dwritePrivateCollection->GetFontFromFontFace(fontFace, &font), SAL_WHERE);
}
}
sal::systools::COMReference<IDWriteFontFamily> fontFamily;
ThrowIfFailed(font->GetFontFamily(&fontFamily), SAL_WHERE);
return sk_sp<SkTypeface>(
SkCreateTypefaceDirectWrite(dwriteFontMgr, fontFace, font.get(), fontFamily.get()));
}
catch (const sal::systools::ComError& e)
{
SAL_DETAIL_LOG_STREAM(SAL_DETAIL_ENABLE_LOG_INFO, ::SAL_DETAIL_LOG_LEVEL_INFO, "vcl.skia",
e.what(),
"HRESULT 0x" << OUString::number(e.GetHresult(), 16) << ": "
<< WindowsErrorStringFromHRESULT(e.GetHresult()));
return nullptr;
}
bool WinSkiaSalGraphicsImpl::DrawTextLayout(const GenericSalLayout& rLayout)
{
assert(dynamic_cast<SkiaWinFontInstance*>(&rLayout.GetFont()));
SkiaWinFontInstance& rWinFont = static_cast<SkiaWinFontInstance&>(rLayout.GetFont());
const vcl::font::FontSelectPattern& rFSD = rWinFont.GetFontSelectPattern();
if (rFSD.mnHeight == 0)
return false;
const HFONT hLayoutFont = rWinFont.GetHFONT();
LOGFONTW logFont;
if (GetObjectW(hLayoutFont, sizeof(logFont), &logFont) == 0)
{
assert(false);
return false;
}
sk_sp<SkTypeface> typeface = rWinFont.GetSkiaTypeface();
if (!typeface)
{
typeface = createDirectWriteTypeface(&rWinFont);
bool dwrite = true;
if (!typeface) // fall back to GDI text rendering
{
// If lfWidth is kept, then with hScale != 1 characters get too wide, presumably
// because the horizontal scaling gets applied twice if GDI is used for drawing (tdf#141715).
// Using lfWidth /= hScale gives slightly incorrect sizes, for a reason I don't understand.
// LOGFONT docs say that 0 means GDI will find out the right value on its own somehow,
// and it apparently works.
logFont.lfWidth = 0;
// Reset LOGFONT orientation, the proper orientation is applied by drawGenericLayout(),
// and keeping this would make it get applied once more when doing the actual GDI drawing.
// Resetting it here does not seem to cause any problem.
logFont.lfOrientation = 0;
logFont.lfEscapement = 0;
typeface = SkCreateTypefaceFromLOGFONT(logFont);
dwrite = false;
if (!typeface)
return false;
}
// Cache the typeface.
rWinFont.SetSkiaTypeface(typeface, dwrite);
}
SkFont font(typeface);
bool bSubpixelPositioning = rLayout.GetSubpixelPositioning();
SkFont::Edging ePreferredAliasing
= bSubpixelPositioning ? SkFont::Edging::kSubpixelAntiAlias : fontEdging;
if (bSubpixelPositioning)
{
// note that SkFont defaults to a BaselineSnap of true, so I think really only
// subpixel in text direction
font.setSubpixel(true);
}
font.setEdging(logFont.lfQuality == NONANTIALIASED_QUALITY ? SkFont::Edging::kAlias
: ePreferredAliasing);
double nHeight = rFSD.mnHeight;
double nWidth = rFSD.mnWidth ? rFSD.mnWidth * rWinFont.GetAverageWidthFactor() : nHeight;
font.setSize(nHeight);
font.setScaleX(nWidth / nHeight);
SkFont verticalFont(font);
verticalFont.setSize(nWidth);
verticalFont.setScaleX(nHeight / nWidth);
assert(dynamic_cast<SkiaSalGraphicsImpl*>(mWinParent.GetImpl()));
SkiaSalGraphicsImpl* impl = static_cast<SkiaSalGraphicsImpl*>(mWinParent.GetImpl());
COLORREF color = ::GetTextColor(mWinParent.getHDC());
Color salColor(GetRValue(color), GetGValue(color), GetBValue(color));
impl->drawGenericLayout(rLayout, salColor, font, verticalFont);
return true;
}
SkFont::Edging WinSkiaSalGraphicsImpl::fontEdging;
void WinSkiaSalGraphicsImpl::initFontInfo()
{
// Skia needs to be explicitly told what kind of antialiasing should be used,
// get it from system settings. This does not actually matter for the text
// rendering itself, since Skia has been patched to simply use the setting
// from the LOGFONT, which gets set by VCL's ImplGetLogFontFromFontSelect()
// and that one normally uses DEFAULT_QUALITY, so Windows will select
// the appropriate AA setting. But Skia internally chooses the format to which
// the glyphs will be rendered based on this setting (subpixel AA requires colors,
// others do not).
fontEdging = SkFont::Edging::kAlias;
SkPixelGeometry pixelGeometry = kUnknown_SkPixelGeometry;
BOOL set;
if (SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &set, 0) && set)
{
UINT set2;
if (SystemParametersInfo(SPI_GETFONTSMOOTHINGTYPE, 0, &set2, 0)
&& set2 == FE_FONTSMOOTHINGCLEARTYPE)
{
fontEdging = SkFont::Edging::kSubpixelAntiAlias;
if (SystemParametersInfo(SPI_GETFONTSMOOTHINGORIENTATION, 0, &set2, 0)
&& set2 == FE_FONTSMOOTHINGORIENTATIONBGR)
// No idea how to tell if it's horizontal or vertical.
pixelGeometry = kBGR_H_SkPixelGeometry;
else
pixelGeometry = kRGB_H_SkPixelGeometry; // default
}
else
fontEdging = SkFont::Edging::kAntiAlias;
}
setPixelGeometry(pixelGeometry);
}
void WinSkiaSalGraphicsImpl::ClearDevFontCache()
{
dwriteFontMgr.reset();
dwriteFontSetBuilder.clear();
dwritePrivateCollection.clear();
dwriteDone = false;
initFontInfo(); // get font info again, just in case
}
SkiaCompatibleDC::SkiaCompatibleDC(SalGraphics& rGraphics, int x, int y, int width, int height)
: CompatibleDC(rGraphics, x, y, width, height, false)
{
}
sk_sp<SkImage> SkiaCompatibleDC::getAsImageDiff(const SkiaCompatibleDC& white) const
{
SkiaZone zone;
assert(maRects.mnSrcWidth == white.maRects.mnSrcWidth
|| maRects.mnSrcHeight == white.maRects.mnSrcHeight);
SkBitmap tmpBitmap;
if (!tmpBitmap.tryAllocPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
kBGRA_8888_SkColorType, kPremul_SkAlphaType),
maRects.mnSrcWidth * 4))
abort();
// Native widgets are drawn twice on black/white background to synthetize alpha
// (commit c6b66646870cb2bffaa73565affcf80bf74e0b5c). The problem is that
// most widgets when drawn on transparent background are drawn properly (and the result
// is in premultiplied alpha format), some such as "Edit" (used by ControlType::Editbox)
// keep the alpha channel as transparent. Therefore the alpha is actually computed
// from the difference in the premultiplied red channels when drawn one black and on white.
// Alpha is computed as "alpha = 1.0 - abs(black.red - white.red)".
// I doubt this can be done using Skia, so do it manually here. Fortunately
// the bitmaps should be fairly small and are cached.
uint32_t* dest = tmpBitmap.getAddr32(0, 0);
assert(dest == tmpBitmap.getPixels());
const sal_uInt32* src = mpData;
const sal_uInt32* whiteSrc = white.mpData;
uint32_t* end = dest + tmpBitmap.width() * tmpBitmap.height();
while (dest < end)
{
uint32_t alpha = 255 - abs(int(*src & 0xff) - int(*whiteSrc & 0xff));
*dest = (*src & 0x00ffffff) | (alpha << 24);
++dest;
++src;
++whiteSrc;
}
tmpBitmap.notifyPixelsChanged();
tmpBitmap.setImmutable();
sk_sp<SkSurface> surface = createSkSurface(tmpBitmap.width(), tmpBitmap.height());
SkPaint paint;
paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
SkCanvas* canvas = surface->getCanvas();
canvas->save();
// The data we got is upside-down.
SkMatrix matrix;
matrix.preTranslate(0, tmpBitmap.height());
matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
canvas->concat(matrix);
canvas->drawImage(tmpBitmap.asImage(), 0, 0, SkSamplingOptions(), &paint);
canvas->restore();
return makeCheckedImageSnapshot(surface);
}
SkiaControlsCache::SkiaControlsCache()
: cache(200)
{
}
SkiaControlCacheType& SkiaControlsCache::get()
{
SalData* data = GetSalData();
if (!data->m_pSkiaControlsCache)
data->m_pSkiaControlsCache.reset(new SkiaControlsCache);
return data->m_pSkiaControlsCache->cache;
}
namespace
{
std::unique_ptr<sk_app::WindowContext> createVulkanWindowContext(bool /*temporary*/)
{
SkiaZone zone;
sk_app::DisplayParams displayParams;
return sk_app::window_context_factory::MakeVulkanForWin(nullptr, displayParams);
}
}
void WinSkiaSalGraphicsImpl::prepareSkia()
{
initFontInfo();
SkiaHelper::prepareSkia(createVulkanWindowContext);
}
void WinSkiaSalGraphicsImpl::ClearNativeControlCache()
{
SalData* data = GetSalData();
data->m_pSkiaControlsCache.reset();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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