Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

3 files changed, 363 insertions, 0 deletions

diff --git a/vcl/skia/x11/gdiimpl.cxx b/vcl/skia/x11/gdiimpl.cxx
new file mode 100644
index 000000000..6a7cce14d
--- /dev/null
+++ b/vcl/skia/x11/gdiimpl.cxx
@@ -0,0 +1,175 @@
+/* -*- 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/.
+ *
+ * Some of this code is based on Skia source code, covered by the following
+ * license notice (see readlicense_oo for the full license):
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ */
+
+#include <skia/x11/gdiimpl.hxx>
+
+#include <tools/sk_app/unix/WindowContextFactory_unix.h>
+
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+
+#include <X11/Xutil.h>
+
+using namespace SkiaHelper;
+
+X11SkiaSalGraphicsImpl::X11SkiaSalGraphicsImpl(X11SalGraphics& rParent)
+    : SkiaSalGraphicsImpl(rParent, rParent.GetGeometryProvider())
+    , mX11Parent(rParent)
+{
+}
+
+void X11SkiaSalGraphicsImpl::Init()
+{
+    // The m_pFrame and m_pVDev pointers are updated late in X11
+    setProvider(mX11Parent.GetGeometryProvider());
+    SkiaSalGraphicsImpl::Init();
+}
+
+void X11SkiaSalGraphicsImpl::createWindowSurfaceInternal(bool forceRaster)
+{
+    assert(!mWindowContext);
+    assert(!mSurface);
+    assert(mX11Parent.GetDrawable() != None);
+    RenderMethod renderMethod = forceRaster ? RenderRaster : renderMethodToUse();
+    mScaling = getWindowScaling();
+    mWindowContext = createWindowContext(mX11Parent.GetXDisplay(), mX11Parent.GetDrawable(),
+                                         &mX11Parent.GetVisual(), GetWidth() * mScaling,
+                                         GetHeight() * mScaling, renderMethod, false);
+    if (mWindowContext)
+    {
+        // See flushSurfaceToWindowContext().
+        if (renderMethod == RenderRaster)
+            mSurface = mWindowContext->getBackbufferSurface();
+        else
+            mSurface = createSkSurface(GetWidth(), GetHeight());
+    }
+}
+
+std::unique_ptr<sk_app::WindowContext>
+X11SkiaSalGraphicsImpl::createWindowContext(Display* display, Drawable drawable,
+                                            const XVisualInfo* visual, int width, int height,
+                                            RenderMethod renderMethod, bool temporary)
+{
+    SkiaZone zone;
+    sk_app::DisplayParams displayParams;
+    displayParams.fColorType = kN32_SkColorType;
+#if defined LINUX
+    // WORKAROUND: VSync causes freezes that can even temporarily freeze the entire desktop.
+    // This happens even with the latest 450.66 drivers despite them claiming a fix for vsync.
+    // https://forums.developer.nvidia.com/t/hangs-freezes-when-vulkan-v-sync-vk-present-mode-fifo-khr-is-enabled/67751
+    if (getVendor() == DriverBlocklist::VendorNVIDIA)
+        displayParams.fDisableVsync = true;
+#endif
+    sk_app::window_context_factory::XlibWindowInfo winInfo;
+    assert(display);
+    winInfo.fDisplay = display;
+    winInfo.fWindow = drawable;
+    winInfo.fFBConfig = nullptr; // not used
+    winInfo.fVisualInfo = const_cast<XVisualInfo*>(visual);
+    assert(winInfo.fVisualInfo->visual != nullptr); // make sure it's not an uninitialized SalVisual
+    winInfo.fWidth = width;
+    winInfo.fHeight = height;
+#if defined DBG_UTIL && !defined NDEBUG
+    // Our patched Skia has VulkanWindowContext that shares grDirectContext, which requires
+    // that the X11 visual is always the same. Ensure it is so.
+    static VisualID checkVisualID = -1U;
+    // Exception is for the temporary case during startup, when SkiaHelper's
+    // checkDeviceDenylisted() needs a WindowContext and may be called before SalVisual
+    // is ready.
+    if (!temporary)
+    {
+        assert(checkVisualID == -1U || winInfo.fVisualInfo->visualid == checkVisualID);
+        checkVisualID = winInfo.fVisualInfo->visualid;
+    }
+#else
+    (void)temporary;
+#endif
+    switch (renderMethod)
+    {
+        case RenderRaster:
+            // Make sure we ask for color type that matches the X11 visual. If red mask
+            // is larger value than blue mask, then on little endian this means blue is first.
+            // This should also preferably match SK_R32_SHIFT set in config_skia.h, as that
+            // improves performance, the common setup seems to be BGRA (possibly because of
+            // choosing OpenGL-capable visual).
+            displayParams.fColorType
+                = (visual->red_mask > visual->blue_mask ? kBGRA_8888_SkColorType
+                                                        : kRGBA_8888_SkColorType);
+            return sk_app::window_context_factory::MakeRasterForXlib(winInfo, displayParams);
+        case RenderVulkan:
+            return sk_app::window_context_factory::MakeVulkanForXlib(winInfo, displayParams);
+        case RenderMetal:
+            abort();
+            break;
+    }
+    abort();
+}
+
+bool X11SkiaSalGraphicsImpl::avoidRecreateByResize() const
+{
+    if (SkiaSalGraphicsImpl::avoidRecreateByResize())
+        return true;
+    if (!mSurface || isOffscreen())
+        return false;
+    // Skia's WindowContext uses actual dimensions of the X window, which due to X11 being
+    // asynchronous may be temporarily different from what VCL thinks are the dimensions.
+    // That can lead to us repeatedly calling recreateSurface() because of "incorrect"
+    // size, and we otherwise need to check for size changes, because VCL does not inform us.
+    // Avoid the problem here by checking the size of the X window and bail out if Skia
+    // would just return the same size as it is now.
+    Window r;
+    int x, y;
+    unsigned int w, h, border, depth;
+    XGetGeometry(mX11Parent.GetXDisplay(), mX11Parent.GetDrawable(), &r, &x, &y, &w, &h, &border,
+                 &depth);
+    return mSurface->width() == int(w) && mSurface->height() == int(h);
+}
+
+void X11SkiaSalGraphicsImpl::freeResources() {}
+
+void X11SkiaSalGraphicsImpl::Flush() { performFlush(); }
+
+std::unique_ptr<sk_app::WindowContext> createVulkanWindowContext(bool temporary)
+{
+    SalDisplay* salDisplay = vcl_sal::getSalDisplay(GetGenericUnixSalData());
+    const XVisualInfo* visual;
+    XVisualInfo* visuals = nullptr;
+    if (!temporary)
+        visual = &salDisplay->GetVisual(salDisplay->GetDefaultXScreen());
+    else
+    {
+        // SalVisual from salDisplay may not be setup yet at this point, get
+        // info for the default visual.
+        XVisualInfo search;
+        search.visualid = XVisualIDFromVisual(
+            DefaultVisual(salDisplay->GetDisplay(), salDisplay->GetDefaultXScreen().getXScreen()));
+        int count;
+        visuals = XGetVisualInfo(salDisplay->GetDisplay(), VisualIDMask, &search, &count);
+        assert(count == 1);
+        visual = visuals;
+    }
+    std::unique_ptr<sk_app::WindowContext> ret = X11SkiaSalGraphicsImpl::createWindowContext(
+        salDisplay->GetDisplay(), None, visual, 1, 1, RenderVulkan, temporary);
+    if (temporary)
+        XFree(visuals);
+    return ret;
+}
+
+void X11SkiaSalGraphicsImpl::prepareSkia() { SkiaHelper::prepareSkia(createVulkanWindowContext); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/x11/salvd.cxx b/vcl/skia/x11/salvd.cxx
new file mode 100644
index 000000000..73488b8a1
--- /dev/null
+++ b/vcl/skia/x11/salvd.cxx
@@ -0,0 +1,85 @@
+/* -*- 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 <vcl/sysdata.hxx>
+
+#include <unx/salunx.h>
+#include <unx/saldisp.hxx>
+#include <unx/salgdi.h>
+#include <unx/salvd.h>
+
+#include <skia/x11/salvd.hxx>
+
+void X11SalGraphics::Init(X11SkiaSalVirtualDevice* pDevice)
+{
+    SalDisplay* pDisplay = pDevice->GetDisplay();
+
+    m_nXScreen = pDevice->GetXScreenNumber();
+    maX11Common.m_pColormap = &pDisplay->GetColormap(m_nXScreen);
+
+    m_pVDev = pDevice;
+    m_pFrame = nullptr;
+
+    bWindow_ = pDisplay->IsDisplay();
+    bVirDev_ = true;
+
+    mxImpl->Init();
+}
+
+X11SkiaSalVirtualDevice::X11SkiaSalVirtualDevice(const SalGraphics& rGraphics, tools::Long nDX,
+                                                 tools::Long nDY, const SystemGraphicsData* pData,
+                                                 std::unique_ptr<X11SalGraphics> pNewGraphics)
+    : mpGraphics(std::move(pNewGraphics))
+    , mbGraphics(false)
+    , mnXScreen(0)
+{
+    assert(mpGraphics);
+
+    // TODO Check where a VirtualDevice is created from SystemGraphicsData
+    assert(pData == nullptr);
+    (void)pData;
+
+    mpDisplay = vcl_sal::getSalDisplay(GetGenericUnixSalData());
+    mnXScreen = static_cast<const X11SalGraphics&>(rGraphics).GetScreenNumber();
+    mnWidth = nDX;
+    mnHeight = nDY;
+    mpGraphics->Init(this);
+}
+
+X11SkiaSalVirtualDevice::~X11SkiaSalVirtualDevice() {}
+
+SalGraphics* X11SkiaSalVirtualDevice::AcquireGraphics()
+{
+    if (mbGraphics)
+        return nullptr;
+
+    if (mpGraphics)
+        mbGraphics = true;
+
+    return mpGraphics.get();
+}
+
+void X11SkiaSalVirtualDevice::ReleaseGraphics(SalGraphics*) { mbGraphics = false; }
+
+bool X11SkiaSalVirtualDevice::SetSize(tools::Long nDX, tools::Long nDY)
+{
+    if (!nDX)
+        nDX = 1;
+    if (!nDY)
+        nDY = 1;
+
+    mnWidth = nDX;
+    mnHeight = nDY;
+    if (mpGraphics)
+        mpGraphics->Init(this);
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/x11/textrender.cxx b/vcl/skia/x11/textrender.cxx
new file mode 100644
index 000000000..7d344b8a2
--- /dev/null
+++ b/vcl/skia/x11/textrender.cxx
@@ -0,0 +1,103 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <skia/x11/textrender.hxx>
+
+#include <unx/fc_fontoptions.hxx>
+#include <unx/freetype_glyphcache.hxx>
+#include <vcl/svapp.hxx>
+#include <sallayout.hxx>
+#include <skia/gdiimpl.hxx>
+
+#include <SkFont.h>
+#include <SkFontMgr_fontconfig.h>
+
+void SkiaTextRender::DrawTextLayout(const GenericSalLayout& rLayout, const SalGraphics& rGraphics)
+{
+    const FreetypeFontInstance& rInstance = static_cast<FreetypeFontInstance&>(rLayout.GetFont());
+    const FreetypeFont& rFont = rInstance.GetFreetypeFont();
+    const vcl::font::FontSelectPattern& rFSD = rInstance.GetFontSelectPattern();
+    int nHeight = rFSD.mnHeight;
+    int nWidth = rFSD.mnWidth ? rFSD.mnWidth : nHeight;
+    if (nWidth == 0 || nHeight == 0)
+        return;
+
+    if (FreetypeFont::AlmostHorizontalDrainsRenderingPool(nWidth * 10 / nHeight, rFSD))
+        return;
+
+    if (!fontManager)
+    {
+        // Get the global FcConfig that our VCL fontconfig code uses, and refcount it.
+        fontManager = SkFontMgr_New_FontConfig(FcConfigReference(nullptr));
+    }
+    sk_sp<SkTypeface> typeface
+        = SkFontMgr_createTypefaceFromFcPattern(fontManager, rFont.GetFontOptions()->GetPattern());
+    SkFont font(typeface);
+    font.setSize(nHeight);
+    font.setScaleX(1.0 * nWidth / nHeight);
+    if (rFont.NeedsArtificialItalic())
+        font.setSkewX(1.0 * -0x4000L / 0x10000L);
+    if (rFont.NeedsArtificialBold())
+        font.setEmbolden(true);
+
+    bool bSubpixelPositioning = rGraphics.getTextRenderModeForResolutionIndependentLayoutEnabled();
+    SkFont::Edging ePreferredAliasing
+        = bSubpixelPositioning ? SkFont::Edging::kSubpixelAntiAlias : SkFont::Edging::kAntiAlias;
+    if (bSubpixelPositioning)
+    {
+        // note that SkFont defaults to a BaselineSnap of true, so I think really only
+        // subpixel in text direction
+        font.setSubpixel(true);
+
+        SkFontHinting eHinting = font.getHinting();
+        bool bAllowedHintStyle
+            = eHinting == SkFontHinting::kNone || eHinting == SkFontHinting::kSlight;
+        if (!bAllowedHintStyle)
+            font.setHinting(SkFontHinting::kSlight);
+    }
+
+    font.setEdging(rFont.GetAntialiasAdvice() ? ePreferredAliasing : SkFont::Edging::kAlias);
+
+    // Vertical font, use width as "height".
+    SkFont verticalFont(font);
+    verticalFont.setSize(nWidth);
+    verticalFont.setScaleX(1.0 * nHeight / nWidth);
+
+    assert(dynamic_cast<SkiaSalGraphicsImpl*>(rGraphics.GetImpl()));
+    SkiaSalGraphicsImpl* impl = static_cast<SkiaSalGraphicsImpl*>(rGraphics.GetImpl());
+    impl->drawGenericLayout(rLayout, mnTextColor, font, verticalFont);
+}
+
+void SkiaTextRender::ClearDevFontCache() { fontManager.reset(); }
+
+#if 0
+// SKIA TODO
+void FontConfigFontOptions::cairo_font_options_substitute(FcPattern* pPattern)
+{
+    ImplSVData* pSVData = ImplGetSVData();
+    const cairo_font_options_t* pFontOptions = pSVData->mpDefInst->GetCairoFontOptions();
+    if( !pFontOptions )
+        return;
+    cairo_ft_font_options_substitute(pFontOptions, pPattern);
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */