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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/.
+ */
+
+#include <config_features.h>
+#include <config_fonts.h>
+
+#include <ostream>
+#include <vector>
+#include <tools/long.hxx>
+#include <vcl/glyphitemcache.hxx>
+
+#if HAVE_MORE_FONTS
+// must be declared before inclusion of test/bootstrapfixture.hxx
+static std::ostream& operator<<(std::ostream& rStream, const std::vector<sal_Int32>& rVec);
+#endif
+#include <test/bootstrapfixture.hxx>
+
+#include <vcl/wrkwin.hxx>
+#include <vcl/virdev.hxx>
+// workaround MSVC2015 issue with std::unique_ptr
+#include <sallayout.hxx>
+#include <salgdi.hxx>
+
+
+#include <ImplLayoutArgs.hxx>
+
+#if HAVE_MORE_FONTS
+static std::ostream& operator<<(std::ostream& rStream, const std::vector<sal_Int32>& rVec)
+{
+ rStream << "{ ";
+ for (size_t i = 0; i < rVec.size() - 1; i++)
+ rStream << rVec[i] << ", ";
+ rStream << rVec.back();
+ rStream << " }";
+ return rStream;
+}
+#endif
+
+class VclComplexTextTest : public test::BootstrapFixture
+{
+#if !defined _WIN32
+ OUString maDataUrl = u"/vcl/qa/cppunit/data/"_ustr;
+
+ OUString getFullUrl(std::u16string_view sFileName)
+ {
+ return m_directories.getURLFromSrc(maDataUrl) + sFileName;
+ }
+
+protected:
+ bool addFont(OutputDevice* pOutDev, std::u16string_view sFileName,
+ std::u16string_view sFamilyName)
+ {
+ OutputDevice::ImplClearAllFontData(true);
+ bool bAdded = pOutDev->AddTempDevFont(getFullUrl(sFileName), OUString(sFamilyName));
+ OutputDevice::ImplRefreshAllFontData(true);
+ return bAdded;
+ }
+#endif
+
+public:
+ VclComplexTextTest()
+ : BootstrapFixture(true, false)
+ {
+ }
+};
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testArabic)
+{
+#if HAVE_MORE_FONTS
+ OUString aOneTwoThree(u"واحِدْ إثٍنين ثلاثةٌ"_ustr);
+
+ vcl::Font aFont("DejaVu Sans", "Book", Size(0, 2048));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ pOutDev->SetFont( aFont );
+
+ // absolute character widths AKA text array.
+ tools::Long nRefTextWidth = 12595;
+ std::vector<sal_Int32> aRefCharWidths = { 989, 1558, 2824, 2824, 3899,
+ 3899, 4550, 5119, 5689, 5689, 6307, 6925, 8484, 9135, 9705, 10927,
+ 10927, 11497, 12595, 12595 };
+ KernArray aCharWidths;
+ tools::Long nTextWidth = pOutDev->GetTextArray(aOneTwoThree, &aCharWidths);
+
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ // this sporadically returns 75 or 74 on some of the windows tinderboxes eg. tb73
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // text advance width and line height
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, pOutDev->GetTextWidth(aOneTwoThree));
+ CPPUNIT_ASSERT_EQUAL(tools::Long(2384), pOutDev->GetTextHeight());
+
+ // exact bounding rectangle, not essentially the same as text width/height
+ tools::Rectangle aBoundRect;
+ pOutDev->GetTextBoundRect(aBoundRect, aOneTwoThree);
+ CPPUNIT_ASSERT_EQUAL(tools::Long(145), aBoundRect.Left());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(212), aBoundRect.Top());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(12294), aBoundRect.GetWidth());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(2279), aBoundRect.getOpenHeight());
+
+ // normal orientation
+ tools::Rectangle aInput;
+ tools::Rectangle aRect = pOutDev->GetTextRect( aInput, aOneTwoThree );
+
+ // now rotate 270 degrees
+ vcl::Font aRotated( aFont );
+ aRotated.SetOrientation( 2700_deg10 );
+ pOutDev->SetFont( aRotated );
+ tools::Rectangle aRectRot = pOutDev->GetTextRect( aInput, aOneTwoThree );
+
+ // Check that we did do the rotation...
+ CPPUNIT_ASSERT_EQUAL( aRectRot.GetWidth(), aRect.GetHeight() );
+ CPPUNIT_ASSERT_EQUAL( aRectRot.GetHeight(), aRect.GetWidth() );
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testTdf95650)
+{
+ static constexpr OUStringLiteral aTxt =
+ u"\u0131\u0302\u0504\u4E44\u3031\u3030\u3531\u2D30"
+ "\u3037\u0706\u0908\u0B0A\u0D0C\u0F0E\u072E\u100A"
+ "\u0D11\u1312\u0105\u020A\u0512\u1403\u030C\u1528"
+ "\u2931\u632E\u7074\u0D20\u0E0A\u100A\uF00D\u0D20"
+ "\u030A\u0C0B\u20E0\u0A0D";
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ // Check that the following executes without failing assertion
+ pOutDev->ImplLayout(aTxt, 9, 1, Point(), 0, {}, {}, SalLayoutFlags::BiDiRtl);
+}
+
+static void checkCompareGlyphs( const SalLayoutGlyphs& aGlyphs1, const SalLayoutGlyphs& aGlyphs2,
+ const std::string& message )
+{
+ CPPUNIT_ASSERT_EQUAL_MESSAGE(message, aGlyphs1.IsValid(), aGlyphs2.IsValid());
+ // And check it's the same.
+ for( int level = 0; level < MAX_FALLBACK; ++level )
+ {
+ const std::string messageLevel( Concat2View(OString::Concat(std::string_view(message))
+ + ", level: " + OString::number(level)) );
+ if( aGlyphs1.Impl(level) == nullptr)
+ {
+ CPPUNIT_ASSERT_MESSAGE(messageLevel, aGlyphs2.Impl(level) == nullptr);
+ continue;
+ }
+ const SalLayoutGlyphsImpl* g1 = aGlyphs1.Impl(level);
+ const SalLayoutGlyphsImpl* g2 = aGlyphs2.Impl(level);
+ CPPUNIT_ASSERT_EQUAL_MESSAGE(messageLevel, g1->GetFont().get(), g2->GetFont().get());
+ CPPUNIT_ASSERT_EQUAL_MESSAGE(messageLevel, g1->size(), g2->size());
+ for( size_t i = 0; i < g1->size(); ++i )
+ {
+ const bool equal = (*g1)[i].isLayoutEquivalent((*g2)[i]);
+ CPPUNIT_ASSERT_MESSAGE(messageLevel, equal);
+ }
+ }
+}
+
+static void testCachedGlyphs( const OUString& aText, const OUString& aFontName )
+{
+ const std::string message( OUString("Font: " + aFontName + ", text: '" + aText + "'").toUtf8() );
+ ScopedVclPtrInstance<VirtualDevice> pOutputDevice;
+ vcl::Font aFont( aFontName, Size(0, 12));
+ pOutputDevice->SetFont( aFont );
+ SalLayoutGlyphsCache::self()->clear();
+ // Get the glyphs for the text.
+ std::unique_ptr<SalLayout> pLayout1 = pOutputDevice->ImplLayout(
+ aText, 0, aText.getLength(), Point(0, 0), 0, {}, {}, SalLayoutFlags::GlyphItemsOnly);
+ SalLayoutGlyphs aGlyphs1 = pLayout1->GetGlyphs();
+ // Reuse the cached glyphs to get glyphs again.
+ std::unique_ptr<SalLayout> pLayout2 = pOutputDevice->ImplLayout(
+ aText, 0, aText.getLength(), Point(0, 0), 0, {}, {}, SalLayoutFlags::GlyphItemsOnly, nullptr, &aGlyphs1);
+ SalLayoutGlyphs aGlyphs2 = pLayout2->GetGlyphs();
+ checkCompareGlyphs(aGlyphs1, aGlyphs2, message + " (reuse)");
+ // Get cached glyphs from SalLayoutGlyphsCache.
+ const SalLayoutGlyphs* aGlyphs3 = SalLayoutGlyphsCache::self()->GetLayoutGlyphs(
+ pOutputDevice, aText, 0, aText.getLength(), 0);
+ CPPUNIT_ASSERT_MESSAGE(message, aGlyphs3 != nullptr);
+ checkCompareGlyphs(aGlyphs1, *aGlyphs3, message + " (cache)");
+}
+
+// Check that caching using SalLayoutGlyphs gives same results as without caching.
+// This should preferably use fonts that come with LO.
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testCaching)
+{
+ // Just something basic, no font fallback.
+ testCachedGlyphs( "test", "Dejavu Sans" );
+ // This font does not have latin characters, will need fallback.
+ testCachedGlyphs( "test", "Noto Kufi Arabic" );
+ // see tdf#103492
+ testCachedGlyphs( u"يوسف My name is"_ustr, "Liberation Sans");
+}
+
+static void testCachedGlyphsSubstring( const OUString& aText, const OUString& aFontName, bool rtl )
+{
+ const std::string prefix( OUString("Font: " + aFontName + ", text: '" + aText + "'").toUtf8() );
+ ScopedVclPtrInstance<VirtualDevice> pOutputDevice;
+ // BiDiStrong is needed, otherwise SalLayoutGlyphsImpl::cloneCharRange() will not do anything.
+ vcl::text::ComplexTextLayoutFlags layoutFlags = vcl::text::ComplexTextLayoutFlags::BiDiStrong;
+ if(rtl)
+ layoutFlags |= vcl::text::ComplexTextLayoutFlags::BiDiRtl;
+ pOutputDevice->SetLayoutMode( layoutFlags );
+ vcl::Font aFont( aFontName, Size(0, 12));
+ pOutputDevice->SetFont( aFont );
+ SalLayoutGlyphsCache::self()->clear();
+ std::shared_ptr<const vcl::text::TextLayoutCache> layoutCache = OutputDevice::CreateTextLayoutCache(aText);
+ // Get the glyphs for the entire text once, to ensure the cache can built subsets from it.
+ pOutputDevice->ImplLayout( aText, 0, aText.getLength(), Point(0, 0), 0, {}, {}, SalLayoutFlags::GlyphItemsOnly,
+ layoutCache.get());
+ // Now check for all subsets. Some of them possibly do not make sense in practice, but the code
+ // should cope with them.
+ for( sal_Int32 len = 1; len <= aText.getLength(); ++len )
+ for( sal_Int32 pos = 0; pos < aText.getLength() - len; ++pos )
+ {
+ std::string message = prefix + " (" + std::to_string(pos) + "/" + std::to_string(len) + ")";
+ std::unique_ptr<SalLayout> pLayout1 = pOutputDevice->ImplLayout(
+ aText, pos, len, Point(0, 0), 0, {}, {}, SalLayoutFlags::GlyphItemsOnly, layoutCache.get());
+ SalLayoutGlyphs aGlyphs1 = pLayout1->GetGlyphs();
+ const SalLayoutGlyphs* aGlyphs2 = SalLayoutGlyphsCache::self()->GetLayoutGlyphs(
+ pOutputDevice, aText, pos, len, 0, layoutCache.get());
+ CPPUNIT_ASSERT_MESSAGE(message, aGlyphs2 != nullptr);
+ checkCompareGlyphs(aGlyphs1, *aGlyphs2, message);
+ }
+
+}
+
+// Check that SalLayoutGlyphsCache works properly when it builds a subset
+// of glyphs using SalLayoutGlyphsImpl::cloneCharRange().
+// This should preferably use fonts that come with LO.
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testCachingSubstring)
+{
+ // Just something basic.
+ testCachedGlyphsSubstring( "test", "Dejavu Sans", false );
+ // And complex arabic text, taken from tdf104649.docx .
+ OUString text(u"فصل (پاره 2): درخواست حاجت از ديگران و برآوردن حاجت ديگران 90"_ustr);
+ testCachedGlyphsSubstring( text, "Dejavu Sans", true );
+ // The text is RTL, but Writer will sometimes try to lay it out as LTR, for whatever reason
+ // (tdf#149264)./ So make sure that gets handled properly too (SalLayoutGlyphsCache should
+ // not use glyph subsets in that case).
+ testCachedGlyphsSubstring( text, "Dejavu Sans", false );
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testCaret)
+{
+#if HAVE_MORE_FONTS
+ // Test caret placement in fonts *without* ligature carets in GDEF table.
+
+ // Set font size to its UPEM to decrease rounding issues
+ vcl::Font aFont("DejaVu Sans", "Book", Size(0, 2048));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ pOutDev->SetFont( aFont );
+
+ OUString aText;
+ KernArray aCharWidths;
+ std::vector<sal_Int32> aRefCharWidths;
+ tools::Long nTextWidth, nTextWidth2, nRefTextWidth;
+
+ // A. RTL text
+ aText = u"لا بلا"_ustr;
+
+ // 1) Regular DX array, the ligature width is given to the first components
+ // and the next ones are all zero width.
+ nRefTextWidth = 3611;
+ aRefCharWidths = { 1168, 1168, 1819, 2389, 3611, 3611 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/false);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // 2) Caret placement DX array, ligature width is distributed over its
+ // components.
+ aRefCharWidths = { 584, 1168, 1819, 2389, 3000, 3611 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/true);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // 3) caret placement with combining marks, they should not add to ligature
+ // component count.
+ aText = u"لَاَ بلَاَ"_ustr;
+ aRefCharWidths = { 584, 584, 1168, 1168, 1819, 2389, 3000, 3000, 3611, 3611 };
+ nTextWidth2 = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/true);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[0], aCharWidths[1]);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[2], aCharWidths[3]);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[6], aCharWidths[7]);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[8], aCharWidths[9]);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth2);
+ CPPUNIT_ASSERT_EQUAL(nTextWidth, nTextWidth2);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // B. LTR text
+ aText = u"fi fl ffi ffl"_ustr;
+
+ // 1) Regular DX array, the ligature width is given to the first components
+ // and the next ones are all zero width.
+ nRefTextWidth = 8493;
+ aRefCharWidths = { 1290, 1290, 1941, 3231, 3231, 3882, 5862, 5862, 5862, 6513, 8493, 8493, 8493 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/false);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // 2) Caret placement DX array, ligature width is distributed over its
+ // components.
+ aRefCharWidths = { 645, 1290, 1941, 2586, 3231, 3882, 4542, 5202, 5862, 6513, 7173, 7833, 8493 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/true);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testGdefCaret)
+{
+#if HAVE_MORE_FONTS
+ // Test caret placement in fonts *with* ligature carets in GDEF table.
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+
+ vcl::Font aFont;
+ OUString aText;
+ KernArray aCharWidths;
+ std::vector<sal_Int32> aRefCharWidths;
+ tools::Long nTextWidth, nTextWidth2, nRefTextWidth;
+
+ // A. RTL text
+ // Set font size to its UPEM to decrease rounding issues
+ aFont = vcl::Font("Noto Sans Arabic", "Regular", Size(0, 1000));
+ pOutDev->SetFont(aFont);
+
+ aText = u"لا بلا"_ustr;
+
+ // 1) Regular DX array, the ligature width is given to the first components
+ // and the next ones are all zero width.
+ nRefTextWidth = 1710;
+ aRefCharWidths= { 582, 582, 842, 1111, 1710, 1710 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/false);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // 2) Caret placement DX array, ligature width is distributed over its
+ // components.
+ aRefCharWidths = { 291, 582, 842, 1111, 1410, 1710 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/true);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // 3) caret placement with combining marks, they should not add to ligature
+ // component count.
+ aText = u"لَاَ بلَاَ"_ustr;
+ aRefCharWidths = { 291, 291, 582, 582, 842, 1111, 1410, 1410, 1710, 1710 };
+ nTextWidth2 = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/true);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[0], aCharWidths[1]);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[2], aCharWidths[3]);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[6], aCharWidths[7]);
+ CPPUNIT_ASSERT_EQUAL(aCharWidths[8], aCharWidths[9]);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth2);
+ CPPUNIT_ASSERT_EQUAL(nTextWidth, nTextWidth2);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // B. LTR text
+ // Set font size to its UPEM to decrease rounding issues
+ aFont = vcl::Font("Amiri", "Regular", Size(0, 1000));
+ pOutDev->SetFont(aFont);
+
+ aText = u"fi ffi fl ffl fb ffb"_ustr;
+
+ // 1) Regular DX array, the ligature width is given to the first components
+ // and the next ones are all zero width.
+ nRefTextWidth = 5996;
+ aRefCharWidths = { 519, 519, 811, 1606, 1606, 1606, 1898, 2439, 2439, 2731,
+ 3544, 3544, 3544, 3836, 4634, 4634, 4926, 5996, 5996, 5996 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/false);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // 2) Caret placement DX array, ligature width is distributed over its
+ // components.
+ aRefCharWidths = { 269, 519, 811, 1080, 1348, 1606, 1898, 2171, 2439, 2731,
+ 3004, 3278, 3544, 3836, 4138, 4634, 4926, 5199, 5494, 5996 };
+ nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths, 0, -1, /*bCaret*/true);
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testTdf152048)
+{
+#if HAVE_MORE_FONTS
+ OUString aText(u"می‌شود"_ustr);
+
+ vcl::Font aFont(u"Noto Naskh Arabic"_ustr, u"Regular"_ustr, Size(0, 2048));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ pOutDev->SetFont(aFont);
+
+ // get an compare the default text array
+ std::vector<sal_Int32> aRefCharWidths{ 934, 2341, 2341, 3689, 4647, 5495 };
+ tools::Long nRefTextWidth(5495);
+
+ KernArray aCharWidths;
+ tools::Long nTextWidth = pOutDev->GetTextArray(aText, &aCharWidths);
+
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // Simulate Kashida insertion using Kashida array and extending text array
+ // to have room for Kashida.
+ std::vector<sal_Bool> aKashidaArray{ false, false, false, true, false, false };
+ auto nKashida = 4000;
+
+ aCharWidths.set(3, aCharWidths[3] + nKashida);
+ aCharWidths.set(4, aCharWidths[4] + nKashida);
+ aCharWidths.set(5, aCharWidths[5] + nKashida);
+ auto pLayout = pOutDev->ImplLayout(aText, 0, -1, Point(0, 0), 0, aCharWidths, aKashidaArray);
+
+ // Without the fix this fails with:
+ // - Expected: 393
+ // - Actual : 511
+ CPPUNIT_ASSERT_EQUAL(double(nRefTextWidth + nKashida), pLayout->GetTextWidth());
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testTdf152048_2)
+{
+#if HAVE_MORE_FONTS
+ vcl::Font aFont(u"Noto Naskh Arabic"_ustr, u"Regular"_ustr, Size(0, 72));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ pOutDev->SetFont(aFont);
+
+ // get an compare the default text array
+ KernArray aCharWidths;
+ auto nTextWidth = pOutDev->GetTextArray(u"ع a ع"_ustr, &aCharWidths);
+
+ // Text width should always be equal to the width of the last glyph in the
+ // kern array.
+ // Without the fix this fails with:
+ // - Expected: 158
+ // - Actual : 118
+ CPPUNIT_ASSERT_EQUAL(aCharWidths.back(), sal_Int32(nTextWidth));
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testTdf153440)
+{
+#if HAVE_MORE_FONTS
+ vcl::Font aFont(u"Noto Naskh Arabic"_ustr, u"Regular"_ustr, Size(0, 72));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ pOutDev->SetFont(aFont);
+
+#if !defined _WIN32 // TODO: Fails on jenkins but passes locally
+ // Add an emoji font so that we are sure a font will be found for the
+ // emoji. The font is subset and supports only 🌿.
+ bool bAdded = addFont(pOutDev, u"tdf153440.ttf", u"Noto Emoji");
+ CPPUNIT_ASSERT_EQUAL(true, bAdded);
+#endif
+
+ for (auto& aString : { u"ع 🌿 ع", u"a 🌿 a" })
+ {
+ OUString aText(aString);
+ bool bRTL = aText.startsWith(u"ع");
+
+ auto pLayout = pOutDev->ImplLayout(aText, 0, -1, Point(0, 0), 0, {}, {});
+
+ int nStart = 0;
+ basegfx::B2DPoint aPos;
+ const GlyphItem* pGlyphItem;
+ while (pLayout->GetNextGlyph(&pGlyphItem, aPos, nStart))
+ {
+ // Assert glyph ID is not 0, if it is 0 then font fallback didn’t
+ // happen.
+ CPPUNIT_ASSERT(pGlyphItem->glyphId());
+
+ // Assert that we are indeed doing RTL layout for RTL text since
+ // the bug does not happen for LTR text.
+ CPPUNIT_ASSERT_EQUAL(bRTL, pGlyphItem->IsRTLGlyph());
+ }
+ }
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testMixedCJKLatinScript_glyph_advancements)
+{
+#if HAVE_MORE_FONTS
+#if !defined _WIN32
+ OUString aTestScript(u"根据10.1(37BA) Eng"_ustr);
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ // note you can only run this once and it was designed for tdf#107718
+ bool bAdded = addFont(pOutDev, u"tdf107718.otf", u"Source Han Sans");
+ CPPUNIT_ASSERT_EQUAL(true, bAdded);
+
+ vcl::Font aFont(u"Source Han Sans"_ustr, u"Regular"_ustr, Size(0, 72));
+ pOutDev->SetFont( aFont );
+
+ vcl::Font aFallbackFont("DejaVu Sans", "Book", Size(0, 72));
+ pOutDev->ForceFallbackFont(aFallbackFont);
+
+ // absolute character widths AKA text array.
+ tools::Long nRefTextWidth = 704;
+ std::vector<sal_Int32> aRefCharWidths = { 72, 144, 190, 236, 259, 305, 333, 379, 425, 474, 523, 551, 567, 612, 658, 704 };
+ KernArray aCharWidths;
+ tools::Long nTextWidth = pOutDev->GetTextArray(aTestScript, &aCharWidths);
+
+ CPPUNIT_ASSERT_EQUAL(aRefCharWidths, aCharWidths.get_subunit_array());
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, nTextWidth);
+ CPPUNIT_ASSERT_EQUAL(sal_Int32(nTextWidth), aCharWidths.back());
+
+ // text advance width and line height
+ CPPUNIT_ASSERT_EQUAL(nRefTextWidth, pOutDev->GetTextWidth(aTestScript));
+ CPPUNIT_ASSERT_EQUAL(tools::Long(105), pOutDev->GetTextHeight());
+#endif
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testTdf107718)
+{
+#if HAVE_MORE_FONTS
+#if !defined _WIN32 // TODO: Fails on jenkins but passes locally
+ vcl::Font aFont(u"Source Han Sans"_ustr, u"Regular"_ustr, Size(0, 72));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+
+ OUString aText(u"\u4E16\u1109\u1168\u11BC\u302E"_ustr);
+ for (bool bVertical : { false, true })
+ {
+ aFont.SetVertical(bVertical);
+ pOutDev->SetFont(aFont);
+
+ auto pLayout = pOutDev->ImplLayout(aText, 0, -1, Point(0, 0), 0, {}, {});
+
+ int nStart = 0;
+ basegfx::B2DPoint aPos;
+ const GlyphItem* pGlyphItem;
+ while (pLayout->GetNextGlyph(&pGlyphItem, aPos, nStart))
+ {
+ // Check that we found a font for all characters, a zero glyph ID
+ // means no font was found so the rest of the test would be
+ // meaningless.
+ CPPUNIT_ASSERT(pGlyphItem->glyphId());
+
+ // Assert that we are indeed doing vertical layout for vertical
+ // font since the bug does not happen for horizontal text.
+ CPPUNIT_ASSERT_EQUAL(bVertical, pGlyphItem->IsVertical());
+
+ // For the second glyph, assert that it is a composition of characters 1 to 4
+ // Without the fix this fails with:
+ // - Expected: 4
+ // - Actual : 1
+ if (nStart == 2)
+ {
+ CPPUNIT_ASSERT_EQUAL(1, pGlyphItem->charPos());
+ CPPUNIT_ASSERT_EQUAL(4, pGlyphItem->charCount());
+ }
+ }
+
+ // Assert there are only three glyphs
+ // Without the fix this fails with:
+ // - Expected: 3
+ // - Actual : 5
+ CPPUNIT_ASSERT_EQUAL(3, nStart);
+ }
+#endif
+#endif
+}
+
+CPPUNIT_TEST_FIXTURE(VclComplexTextTest, testTdf107612)
+{
+#if HAVE_MORE_FONTS
+ vcl::Font aFont(u"DejaVu Sans"_ustr, u"Book"_ustr, Size(0, 72));
+
+ ScopedVclPtrInstance<VirtualDevice> pOutDev;
+ pOutDev->SetFont(aFont);
+
+ auto pLayout = pOutDev->ImplLayout(u"a\u202F\u1823"_ustr, 0, -1, Point(0, 0), 0, {}, {});
+
+ // If font fallback happened, then the returned layout must be a
+ // MultiSalLayout instance.
+ auto pMultiLayout = dynamic_cast<MultiSalLayout*>(pLayout.get());
+ CPPUNIT_ASSERT(pMultiLayout);
+
+ auto pFallbackRuns = pMultiLayout->GetFallbackRuns();
+ CPPUNIT_ASSERT(!pFallbackRuns->IsEmpty());
+
+ bool bRTL;
+ int nCharPos = -1;
+ std::vector<sal_Int32> aFallbacks;
+ while (pFallbackRuns->GetNextPos(&nCharPos, &bRTL))
+ aFallbacks.push_back(nCharPos);
+
+ // Assert that U+202F is included in the fallback run.
+ // Without the fix this fails with:
+ // - Expected: { 1, 2 }
+ // - Actual : { 2 }
+ std::vector<sal_Int32> aExpctedFallbacks = { 1, 2 };
+ CPPUNIT_ASSERT_EQUAL(aExpctedFallbacks, aExpctedFallbacks);
+#endif
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */