Subject: [PATCH] Fixed build under Fedora using rpmbuild and mock.

From dba8b962c805af477ceee699aa1c05143aa19d43 Mon Sep 17 00:00:00 2001
From: Vitaly Zaitsev <vitaly@easycoding.org>
Date: Fri, 31 Mar 2017 14:29:58 +0200

Telegram/SourceFiles/main.cpp

@@ -23,9 +23,10 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "storage/localstorage.h"
 
 int main(int argc, char *argv[]) {
-#ifndef Q_OS_MAC // Retina display support is working fine, others are not.
+#if !defined(Q_OS_MAC) && QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
+	// Retina display support is working fine, others are not.
 	QCoreApplication::setAttribute(Qt::AA_DisableHighDpiScaling, true);
-#endif // Q_OS_MAC
+#endif // not defined Q_OS_MAC and QT_VERSION >= 5.6.0
 	QCoreApplication::setApplicationName(qsl("TelegramDesktop"));
 
 	InitFromCommandLine(argc, argv);
@@ -38,6 +39,13 @@ int main(int argc, char *argv[]) {
 	// both are finished in Application::closeApplication
 	Logs::start(); // must be started before Platform is started
 	Platform::start(); // must be started before QApplication is created
+#if defined(Q_OS_LINUX64)
+	QCoreApplication::addLibraryPath("/usr/lib64/qt5/plugins");
+#else
+	QCoreApplication::addLibraryPath("/usr/lib/qt5/plugins");
+#endif
+	setenv("QT_STYLE_OVERRIDE", "qwerty", false);
+	unsetenv("QT_QPA_PLATFORMTHEME");
 
 	int result = 0;
 	{

Telegram/SourceFiles/qt_functions.cpp

@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file contains some parts of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qtextengine_p.h>
+
+/* TODO: find a dynamic library with these symbols. */
+
+/* Debian maintainer: this function is taken from qfiledialog.cpp */
+/*
+    Makes a list of filters from ;;-separated text.
+    Used by the mac and windows implementations
+*/
+QStringList qt_make_filter_list(const QString &filter)
+{
+    QString f(filter);
+
+    if (f.isEmpty())
+        return QStringList();
+
+    QString sep(QLatin1String(";;"));
+    int i = f.indexOf(sep, 0);
+    if (i == -1) {
+        if (f.indexOf(QLatin1Char('\n'), 0) != -1) {
+            sep = QLatin1Char('\n');
+            i = f.indexOf(sep, 0);
+        }
+    }
+
+    return f.split(sep);
+}
+
+/* Debian maintainer: this constructor is taken from qtextengine.cpp for TextPainter::drawLine */
+QTextItemInt::QTextItemInt(const QGlyphLayout &g, QFont *font, const QChar *chars_, int numChars, QFontEngine *fe, const QTextCharFormat &format)
+    : flags(0), justified(false), underlineStyle(QTextCharFormat::NoUnderline), charFormat(format),
+      num_chars(numChars), chars(chars_), logClusters(0), f(font),  glyphs(g), fontEngine(fe)
+{
+}
+
+/* Debian maintainer: this method is also taken from qtextengine.cpp */
+// Fix up flags and underlineStyle with given info
+void QTextItemInt::initWithScriptItem(const QScriptItem &si)
+{
+    // explicitly initialize flags so that initFontAttributes can be called
+    // multiple times on the same TextItem
+    flags = 0;
+    if (si.analysis.bidiLevel %2)
+        flags |= QTextItem::RightToLeft;
+    ascent = si.ascent;
+    descent = si.descent;
+
+    if (charFormat.hasProperty(QTextFormat::TextUnderlineStyle)) {
+        underlineStyle = charFormat.underlineStyle();
+    } else if (charFormat.boolProperty(QTextFormat::FontUnderline)
+               || f->d->underline) {
+        underlineStyle = QTextCharFormat::SingleUnderline;
+    }
+
+    // compat
+    if (underlineStyle == QTextCharFormat::SingleUnderline)
+        flags |= QTextItem::Underline;
+
+    if (f->d->overline || charFormat.fontOverline())
+        flags |= QTextItem::Overline;
+    if (f->d->strikeOut || charFormat.fontStrikeOut())
+        flags |= QTextItem::StrikeOut;
+}

Telegram/SourceFiles/qt_static_plugins.cpp

@@ -28,13 +28,4 @@ Q_IMPORT_PLUGIN(QWebpPlugin)
 Q_IMPORT_PLUGIN(QCocoaIntegrationPlugin)
 Q_IMPORT_PLUGIN(QGenericEnginePlugin)
 #elif defined Q_OS_LINUX // Q_OS_WIN | Q_OS_MAC
-Q_IMPORT_PLUGIN(QWebpPlugin)
-Q_IMPORT_PLUGIN(QXcbIntegrationPlugin)
-Q_IMPORT_PLUGIN(QConnmanEnginePlugin)
-Q_IMPORT_PLUGIN(QGenericEnginePlugin)
-Q_IMPORT_PLUGIN(QNetworkManagerEnginePlugin)
-Q_IMPORT_PLUGIN(QComposePlatformInputContextPlugin)
-Q_IMPORT_PLUGIN(QIbusPlatformInputContextPlugin)
-Q_IMPORT_PLUGIN(QFcitxPlatformInputContextPlugin)
-Q_IMPORT_PLUGIN(QHimePlatformInputContextPlugin)
 #endif // Q_OS_WIN | Q_OS_MAC | Q_OS_LINUX

Telegram/SourceFiles/ui/text/text.cpp

@@ -1689,11 +1689,11 @@ private:
 		if (item == -1)
 			return;
 
-#ifdef OS_MAC_OLD
+#if defined(OS_MAC_OLD) || QT_VERSION < QT_VERSION_CHECK(5, 6, 0)
 		auto end = _e->findItem(line.from + line.length - 1);
-#else // OS_MAC_OLD
+#else
 		auto end = _e->findItem(line.from + line.length - 1, item);
-#endif // OS_MAC_OLD
+#endif
 
 		auto blockIndex = _lineStartBlock;
 		auto currentBlock = _t->_blocks[blockIndex].get();

Telegram/SourceFiles/ui/text/text_block.cpp

@@ -330,7 +330,7 @@ TextBlock::TextBlock(const style::font &font, const QString &str, QFixed minResi
 		SignalHandlers::setCrashAnnotationRef("CrashString", &part);
 
 		QStackTextEngine engine(part, blockFont->f);
-		QTextLayout layout(&engine);
+		QTextLayout layout(part, blockFont->f);
 		layout.beginLayout();
 		layout.createLine();
 

Telegram/SourceFiles/ui/twidget.cpp

@@ -191,9 +191,9 @@ void sendSynteticMouseEvent(QWidget *widget, QEvent::Type type, Qt::MouseButton
 			, button
 			, QGuiApplication::mouseButtons() | button
 			, QGuiApplication::keyboardModifiers()
-#ifndef OS_MAC_OLD
+#if !defined(OS_MAC_OLD) && QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
 			, Qt::MouseEventSynthesizedByApplication
-#endif // OS_MAC_OLD
+#endif
 		);
 		ev.setTimestamp(getms());
 		QGuiApplication::sendEvent(windowHandle, &ev);

lib/xdg/telegramdesktop.appdata.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <component type="desktop">
-    <id>org.telegram.desktop</id>
+    <id>telegram-desktop.desktop</id>
     <metadata_license>CC0-1.0</metadata_license>
     <project_license>GPL-3.0</project_license>
     <name>Telegram Desktop</name>

lib/xdg/telegramdesktop.desktop

@@ -1,9 +1,11 @@
 [Desktop Entry]
 Version=1.0
 Name=Telegram Desktop
+GenericName=Telegram Desktop
+Keywords=IM;Chat;
 Comment=Official desktop version of Telegram messaging app
-Exec=telegram-desktop -- %u
-Icon=telegram
+Exec=/usr/bin/telegram-desktop -- %u
+Icon=telegram-desktop
 Terminal=false
 StartupWMClass=TelegramDesktop
 Type=Application