1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
|
/* -*- 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/window/win/WindowContextFactory_win.h>
#include <tools/window/WindowContext.h>
#include <windows.h>
#include <type_traits>
namespace
{
sal::systools::COMReference<IDWriteFontCollection>
getDWritePrivateFontCollection(IDWriteFontFace* fontFace)
{
UINT32 numberOfFiles;
sal::systools::ThrowIfFailed(fontFace->GetFiles(&numberOfFiles, nullptr), SAL_WHERE);
if (numberOfFiles != 1)
return {};
sal::systools::COMReference<IDWriteFontFile> fontFile;
sal::systools::ThrowIfFailed(fontFace->GetFiles(&numberOfFiles, &fontFile), SAL_WHERE);
static sal::systools::COMReference<IDWriteFactory3> dwriteFactory3 = [] {
IDWriteFactory* dwriteFactory = WinSalGraphics::getDWriteFactory();
sal::systools::COMReference<IDWriteFactory3> factory3;
sal::systools::ThrowIfFailed(dwriteFactory->QueryInterface(&factory3), SAL_WHERE);
return factory3;
}();
static sal::systools::COMReference<IDWriteFontSetBuilder> dwriteFontSetBuilder = [] {
sal::systools::COMReference<IDWriteFontSetBuilder> builder;
sal::systools::ThrowIfFailed(dwriteFactory3->CreateFontSetBuilder(&builder), SAL_WHERE);
return builder;
}();
BOOL isSupported;
DWRITE_FONT_FILE_TYPE fileType;
UINT32 numberOfFonts;
sal::systools::ThrowIfFailed(
fontFile->Analyze(&isSupported, &fileType, nullptr, &numberOfFonts), SAL_WHERE);
if (!isSupported)
return {};
// 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, fontIndex, DWRITE_FONT_SIMULATIONS_NONE, &fontFaceReference)))
continue;
// Leave it to DirectWrite to read properties directly out of the font files
dwriteFontSetBuilder->AddFontFaceReference(fontFaceReference);
}
sal::systools::COMReference<IDWriteFontSet> fontSet;
sal::systools::ThrowIfFailed(dwriteFontSetBuilder->CreateFontSet(&fontSet), SAL_WHERE);
sal::systools::COMReference<IDWriteFontCollection1> fc1;
sal::systools::ThrowIfFailed(dwriteFactory3->CreateFontCollectionFromFontSet(fontSet, &fc1),
SAL_WHERE);
return { fc1.get() };
}
}
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;
skwindow::DisplayParams displayParams;
assert(GetWidth() > 0 && GetHeight() > 0);
displayParams.fSurfaceProps = *surfaceProps();
switch (forceRaster ? RenderRaster : renderMethodToUse())
{
case RenderRaster:
mWindowContext = skwindow::MakeRasterForWin(mWinParent.gethWnd(), displayParams);
if (mWindowContext)
mSurface = mWindowContext->getBackbufferSurface();
break;
case RenderVulkan:
mWindowContext = skwindow::MakeVulkanForWin(mWinParent.gethWnd(), displayParams);
// See flushSurfaceToWindowContext().
if (mWindowContext)
mSurface = createSkSurface(GetWidth(), GetHeight());
break;
case RenderMetal:
abort();
break;
}
}
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.
dwritePrivateCollection = getDWritePrivateFontCollection(fontFace);
if (!dwritePrivateCollection) // Not one file? Unsupported font?
return nullptr;
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();
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<skwindow::WindowContext> createVulkanWindowContext(bool /*temporary*/)
{
SkiaZone zone;
skwindow::DisplayParams displayParams;
return skwindow::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: */
|