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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/.
*
* 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: */
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