--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/messagelog.cpp Sat Jul 06 04:08:57 2013 +0300
@@ -0,0 +1,119 @@
+/*
+ * LDForge: LDraw parts authoring CAD
+ * Copyright (C) 2013 Santeri Piippo
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "msglog.h"
+#include "gldraw.h"
+#include "gui.h"
+#include <QTimer>
+#include <QDate>
+
+static const unsigned int g_maxMessages = 5;
+static const int g_expiry = 5;
+static const int g_fadeTime = 500; // msecs
+
+MessageManager::MessageManager( QObject* parent ) : QObject( parent )
+{
+ m_ticker = new QTimer;
+ m_ticker->start( 100 );
+ connect( m_ticker, SIGNAL( timeout() ), this, SLOT( tick() ));
+}
+
+MessageManager::Line::Line( str text ) : text( text ), alpha( 1.0f )
+{
+ // Init expiry
+ expiry = QDateTime::currentDateTime().addSecs( g_expiry );
+}
+
+// =============================================================================
+// Check this line's expiry and update alpha accordingly. Returns true if the
+// line is still around, false if it expired.
+bool MessageManager::Line::update( bool& changed )
+{
+ changed = false;
+
+ QDateTime now = QDateTime::currentDateTime();
+ if( now >= expiry )
+ {
+ changed = true;
+ return false;
+ }
+
+ int msec = now.msecsTo( expiry );
+ if( msec <= g_fadeTime )
+ {
+ alpha = ( (float) msec ) / g_fadeTime;
+ changed = true;
+ }
+
+ return true;
+}
+
+void MessageManager::addLine( str line )
+{
+ // If there's too many entries, pop the excess out
+ while( m_lines.size() >= g_maxMessages )
+ m_lines.erase( 0 );
+
+ m_lines << Line( line );
+
+ // Update the renderer view
+ if( renderer() )
+ renderer()->update();
+}
+
+MessageManager& MessageManager::operator<<( str line )
+{
+ addLine( line );
+ return *this;
+}
+
+void MessageManager::tick()
+{
+ if( m_lines.size() == 0 )
+ return;
+
+ bool changed = false;
+
+ for( uint i = 0; i < m_lines.size(); ++i )
+ {
+ bool lineChanged;
+
+ if( !m_lines[i].update( lineChanged ))
+ m_lines.erase( i-- );
+
+ changed |= lineChanged;
+ }
+
+ if( changed && renderer() )
+ renderer()->update();
+}
+
+MessageManager::c_it MessageManager::begin() const
+{
+ return m_lines.begin();
+}
+
+MessageManager::c_it MessageManager::end() const
+{
+ return m_lines.end();
+}
+
+void DoLog( std::initializer_list<StringFormatArg> args )
+{
+ g_win->addMessage( DoFormat( args ));
+}
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