Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 393 insertions, 0 deletions

diff --git a/vcl/skia/win/gdiimpl.cxx b/vcl/skia/win/gdiimpl.cxx
new file mode 100644
index 000000000..a4cbe062f
--- /dev/null
+++ b/vcl/skia/win/gdiimpl.cxx
@@ -0,0 +1,393 @@
+/* -*- 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 <skia/win/gdiimpl.hxx>
+
+#include <win/saldata.hxx>
+#include <vcl/skia/SkiaHelper.hxx>
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+#include <win/winlayout.hxx>
+#include <comphelper/windowserrorstring.hxx>
+
+#include <SkCanvas.h>
+#include <SkPaint.h>
+#include <SkPixelRef.h>
+#include <SkTypeface_win.h>
+#include <SkFont.h>
+#include <SkFontMgr.h>
+#include <SkFontLCDConfig.h>
+#include <tools/sk_app/win/WindowContextFactory_win.h>
+#include <tools/sk_app/WindowContext.h>
+
+#include <windows.h>
+
+WinSkiaSalGraphicsImpl::WinSkiaSalGraphicsImpl(WinSalGraphics& rGraphics,
+                                               SalGeometryProvider* mpProvider)
+    : SkiaSalGraphicsImpl(rGraphics, mpProvider)
+    , mWinParent(rGraphics)
+{
+}
+
+void WinSkiaSalGraphicsImpl::createWindowContext(bool forceRaster)
+{
+    SkiaZone zone;
+    sk_app::DisplayParams displayParams;
+    switch (forceRaster ? SkiaHelper::RenderRaster : SkiaHelper::renderMethodToUse())
+    {
+        case SkiaHelper::RenderRaster:
+            mWindowContext = sk_app::window_context_factory::MakeRasterForWin(mWinParent.gethWnd(),
+                                                                              displayParams);
+            break;
+        case SkiaHelper::RenderVulkan:
+            mWindowContext = sk_app::window_context_factory::MakeVulkanForWin(mWinParent.gethWnd(),
+                                                                              displayParams);
+            break;
+    }
+}
+
+void WinSkiaSalGraphicsImpl::DeInit()
+{
+    SkiaZone zone;
+    SkiaSalGraphicsImpl::DeInit();
+    mWindowContext.reset();
+}
+
+void WinSkiaSalGraphicsImpl::freeResources() {}
+
+void WinSkiaSalGraphicsImpl::performFlush()
+{
+    SkiaZone zone;
+    flushDrawing();
+    if (mWindowContext)
+        mWindowContext->swapBuffers();
+}
+
+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()));
+    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()));
+    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;
+}
+
+#ifdef SAL_LOG_INFO
+static HRESULT checkResult(HRESULT hr, const char* file, size_t line)
+{
+    if (FAILED(hr))
+    {
+        OUString sLocationString
+            = OUString::createFromAscii(file) + ":" + OUString::number(line) + " ";
+        SAL_DETAIL_LOG_STREAM(SAL_DETAIL_ENABLE_LOG_INFO, ::SAL_DETAIL_LOG_LEVEL_INFO, "vcl.skia",
+                              sLocationString.toUtf8().getStr(),
+                              "HRESULT failed with: 0x" << OUString::number(hr, 16) << ": "
+                                                        << WindowsErrorStringFromHRESULT(hr));
+    }
+    return hr;
+}
+
+#define CHECKHR(funct) checkResult(funct, __FILE__, __LINE__)
+#else
+#define CHECKHR(funct) (funct)
+#endif
+
+sk_sp<SkTypeface> WinSkiaSalGraphicsImpl::createDirectWriteTypeface(const LOGFONTW& logFont)
+{
+    if (!dwriteDone)
+    {
+        if (SUCCEEDED(
+                CHECKHR(DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
+                                            reinterpret_cast<IUnknown**>(&dwriteFactory)))))
+        {
+            if (SUCCEEDED(CHECKHR(dwriteFactory->GetGdiInterop(&dwriteGdiInterop))))
+                dwriteFontMgr = SkFontMgr_New_DirectWrite(dwriteFactory);
+            else
+                dwriteFactory->Release();
+        }
+        dwriteDone = true;
+    }
+    IDWriteFont* font = nullptr;
+    IDWriteFontFace* fontFace;
+    IDWriteFontFamily* fontFamily;
+    if (FAILED(CHECKHR(dwriteGdiInterop->CreateFontFromLOGFONT(&logFont, &font))))
+        return nullptr;
+    if (FAILED(CHECKHR(font->CreateFontFace(&fontFace))))
+        return nullptr;
+    if (FAILED(CHECKHR(font->GetFontFamily(&fontFamily))))
+        return nullptr;
+    return sk_sp<SkTypeface>(
+        SkCreateTypefaceDirectWrite(dwriteFontMgr, fontFace, font, fontFamily));
+}
+
+bool WinSkiaSalGraphicsImpl::DrawTextLayout(const GenericSalLayout& rLayout)
+{
+    const WinFontInstance& rWinFont = static_cast<const WinFontInstance&>(rLayout.GetFont());
+    float fHScale = rWinFont.getHScale();
+
+    assert(dynamic_cast<const WinFontInstance*>(&rLayout.GetFont()));
+    const WinFontInstance* pWinFont = static_cast<const WinFontInstance*>(&rLayout.GetFont());
+    const HFONT hLayoutFont = pWinFont->GetHFONT();
+    LOGFONTW logFont;
+    if (GetObjectW(hLayoutFont, sizeof(logFont), &logFont) == 0)
+    {
+        assert(false);
+        return false;
+    }
+    sk_sp<SkTypeface> typeface = createDirectWriteTypeface(logFont);
+    GlyphOrientation glyphOrientation = GlyphOrientation::Apply;
+    if (!typeface) // fall back to GDI text rendering
+    {
+        typeface.reset(SkCreateTypefaceFromLOGFONT(logFont));
+        glyphOrientation = GlyphOrientation::Ignore;
+    }
+    // lfHeight actually depends on DPI, so it's not really font height as such,
+    // but for LOGFONT-based typefaces Skia simply sets lfHeight back to this value
+    // directly.
+    double fontHeight = logFont.lfHeight;
+    if (fontHeight < 0)
+        fontHeight = -fontHeight;
+    SkFont font(typeface, fontHeight, fHScale, 0);
+    font.setEdging(getFontEdging());
+    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));
+    // The font already is set up to have glyphs rotated as needed.
+    impl->drawGenericLayout(rLayout, salColor, font, glyphOrientation);
+    return true;
+}
+
+SkFont::Edging WinSkiaSalGraphicsImpl::getFontEdging()
+{
+    if (fontEdgingDone)
+        return fontEdging;
+    // 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;
+    SkFontLCDConfig::LCDOrder lcdOrder = SkFontLCDConfig::kNONE_LCDOrder;
+    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)
+                lcdOrder = SkFontLCDConfig::kBGR_LCDOrder;
+            else
+                lcdOrder = SkFontLCDConfig::kRGB_LCDOrder; // default
+        }
+        else
+            fontEdging = SkFont::Edging::kAntiAlias;
+    }
+    SkFontLCDConfig::SetSubpixelOrder(lcdOrder);
+    // Cache this, it is actually visible a little bit when profiling.
+    fontEdgingDone = true;
+    return fontEdging;
+}
+
+void WinSkiaSalGraphicsImpl::ClearDevFontCache()
+{
+    dwriteFontMgr.reset();
+    dwriteDone = false;
+    fontEdgingDone = false;
+}
+
+SkiaCompatibleDC::SkiaCompatibleDC(SalGraphics& rGraphics, int x, int y, int width, int height)
+    : CompatibleDC(rGraphics, x, y, width, height, false)
+{
+}
+
+std::unique_ptr<CompatibleDC::Texture> SkiaCompatibleDC::getAsMaskTexture() const
+{
+    auto ret = std::make_unique<SkiaCompatibleDC::Texture>();
+    ret->image = getAsMaskImage();
+    return ret;
+}
+
+sk_sp<SkImage> SkiaCompatibleDC::getAsMaskImage() const
+{
+    SkiaZone zone;
+    // mpData is in the BGRA format, with A unused (and set to 0), and RGB are grey,
+    // so convert it to Skia format, then to 8bit and finally use as alpha mask
+    SkBitmap tmpBitmap;
+    if (!tmpBitmap.installPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+                                                   kBGRA_8888_SkColorType, kOpaque_SkAlphaType),
+                                 mpData, maRects.mnSrcWidth * 4))
+        abort();
+    tmpBitmap.setImmutable();
+    SkBitmap bitmap8;
+    if (!bitmap8.tryAllocPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+                                                  kGray_8_SkColorType, kOpaque_SkAlphaType)))
+        abort();
+    SkCanvas canvas8(bitmap8);
+    SkPaint paint8;
+    paint8.setBlendMode(SkBlendMode::kSrc); // copy and convert depth
+    // The data we got is upside-down.
+    SkMatrix matrix;
+    matrix.preTranslate(0, maRects.mnSrcHeight);
+    matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
+    canvas8.concat(matrix);
+    canvas8.drawBitmap(tmpBitmap, 0, 0, &paint8);
+    bitmap8.setImmutable();
+    // use the 8bit data as an alpha channel
+    SkBitmap alpha;
+    alpha.setInfo(bitmap8.info().makeColorType(kAlpha_8_SkColorType), bitmap8.rowBytes());
+    alpha.setPixelRef(sk_ref_sp(bitmap8.pixelRef()), bitmap8.pixelRefOrigin().x(),
+                      bitmap8.pixelRefOrigin().y());
+    alpha.setImmutable();
+    return SkiaHelper::createSkImage(alpha);
+}
+
+sk_sp<SkImage> SkiaCompatibleDC::getAsImage() const
+{
+    SkiaZone zone;
+    SkBitmap tmpBitmap;
+    if (!tmpBitmap.installPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+                                                   kBGRA_8888_SkColorType, kUnpremul_SkAlphaType),
+                                 mpData, maRects.mnSrcWidth * 4))
+        abort();
+    tmpBitmap.setImmutable();
+    sk_sp<SkSurface> surface = SkiaHelper::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, maRects.mnSrcHeight);
+    matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
+    canvas->concat(matrix);
+    canvas->drawBitmapRect(tmpBitmap,
+                           SkRect::MakeXYWH(0, 0, maRects.mnSrcWidth, maRects.mnSrcHeight),
+                           SkRect::MakeXYWH(0, 0, maRects.mnSrcWidth, maRects.mnSrcHeight), &paint);
+    canvas->restore();
+    return SkiaHelper::makeCheckedImageSnapshot(surface);
+}
+
+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)".
+    // TODO 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 = SkiaHelper::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->drawBitmap(tmpBitmap, 0, 0, &paint);
+    canvas->restore();
+    return SkiaHelper::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() { SkiaHelper::prepareSkia(createVulkanWindowContext); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */