NOISSUE move everything.

application/widgets/VersionListView.cpp

@@ -0,0 +1,147 @@
+/* Copyright 2013-2015 MultiMC Contributors
+ *
+ * Licensed 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
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <QHeaderView>
+#include <QApplication>
+#include <QMouseEvent>
+#include <QDrag>
+#include <QPainter>
+#include "VersionListView.h"
+#include "Common.h"
+
+VersionListView::VersionListView(QWidget *parent)
+	:QTreeView ( parent )
+{
+	m_emptyString = tr("No versions are currently available.");
+}
+
+void VersionListView::rowsInserted(const QModelIndex &parent, int start, int end)
+{
+	if(!m_itemCount)
+		viewport()->update();
+	m_itemCount += end-start+1;
+	QTreeView::rowsInserted(parent, start, end);
+}
+
+
+void VersionListView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
+{
+	m_itemCount -= end-start+1;
+	if(!m_itemCount)
+		viewport()->update();
+	QTreeView::rowsInserted(parent, start, end);
+}
+
+void VersionListView::setModel(QAbstractItemModel *model)
+{
+	m_itemCount = model->rowCount();
+	if(!m_itemCount)
+		viewport()->update();
+	QTreeView::setModel(model);
+}
+
+void VersionListView::reset()
+{
+	if(model())
+	{
+		m_itemCount = model()->rowCount();
+	}
+	viewport()->update();
+	QTreeView::reset();
+}
+
+void VersionListView::setEmptyString(QString emptyString)
+{
+	m_emptyString = emptyString;
+	if(!m_itemCount)
+	{
+		viewport()->update();
+	}
+}
+
+void VersionListView::paintEvent(QPaintEvent *event)
+{
+	if(m_itemCount)
+	{
+		QTreeView::paintEvent(event);
+	}
+	else
+	{
+		paintInfoLabel(event);
+	}
+}
+
+void VersionListView::paintInfoLabel(QPaintEvent *event)
+{
+    //calculate the rect for the overlay
+    QPainter painter(viewport());
+    painter.setRenderHint(QPainter::Antialiasing, true);
+	QFont font("sans", 20);
+    font.setBold(true);
+	
+	QRect bounds = viewport()->geometry();
+	bounds.moveTop(0);
+	QTextLayout layout(m_emptyString, font);
+	qreal height = 0.0;
+	qreal widthUsed = 0.0;
+	QStringList lines = viewItemTextLayout(layout, bounds.width() - 20, height, widthUsed);
+	QRect rect (0,0, widthUsed, height);
+	rect.setWidth(rect.width()+20);
+	rect.setHeight(rect.height()+20);
+    rect.moveCenter(bounds.center());
+    //check if we are allowed to draw in our area
+    if (!event->rect().intersects(rect)) {
+        return;
+    }
+    //draw the letter of the topmost item semitransparent in the middle
+    QColor background = QApplication::palette().color(QPalette::Foreground);
+    QColor foreground = QApplication::palette().color(QPalette::Base);
+	/*
+    background.setAlpha(128 - scrollFade);
+    foreground.setAlpha(128 - scrollFade);
+    */
+    painter.setBrush(QBrush(background));
+    painter.setPen(foreground);
+    painter.drawRoundedRect(rect, 5.0, 5.0);
+    foreground.setAlpha(190);
+    painter.setPen(foreground);
+    painter.setFont(font);
+    painter.drawText(rect, Qt::AlignCenter, lines.join("\n"));
+	
+}
+
+/*
+void ModListView::setModel ( QAbstractItemModel* model )
+{
+	QTreeView::setModel ( model );
+	auto head = header();
+	head->setStretchLastSection(false);
+	// HACK: this is true for the checkbox column of mod lists
+	auto string = model->headerData(0,head->orientation()).toString();
+	if(!string.size())
+	{
+		head->setSectionResizeMode(0, QHeaderView::ResizeToContents);
+		head->setSectionResizeMode(1, QHeaderView::Stretch);
+		for(int i = 2; i < head->count(); i++)
+			head->setSectionResizeMode(i, QHeaderView::ResizeToContents);
+	}
+	else
+	{
+		head->setSectionResizeMode(0, QHeaderView::Stretch);
+		for(int i = 1; i < head->count(); i++)
+			head->setSectionResizeMode(i, QHeaderView::ResizeToContents);
+	}
+}
+*/