1 files changed, 103 insertions, 0 deletions
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: */