1 files changed, 246 insertions, 0 deletions
diff --git a/gui/widgets/InstanceDelegate.cpp b/gui/widgets/InstanceDelegate.cpp
new file mode 100644
index 00000000..487fed61
--- /dev/null
+++ b/gui/widgets/InstanceDelegate.cpp
@@ -0,0 +1,246 @@
+/* Copyright 2013 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 "InstanceDelegate.h"
+#include <QPainter>
+#include <QTextOption>
+#include <QTextLayout>
+#include <QApplication>
+#include <QtCore/qmath.h>
+
+// Origin: Qt
+static void viewItemTextLayout ( QTextLayout &textLayout, int lineWidth, qreal &height, qreal &widthUsed )
+{
+	height = 0;
+	widthUsed = 0;
+	textLayout.beginLayout();
+	QString str = textLayout.text();
+	while ( true )
+	{
+		QTextLine line = textLayout.createLine();
+		if ( !line.isValid() )
+			break;
+		if(line.textLength() == 0)
+			break;
+		line.setLineWidth ( lineWidth );
+		line.setPosition ( QPointF ( 0, height ) );
+		height += line.height();
+		widthUsed = qMax ( widthUsed, line.naturalTextWidth() );
+	}
+	textLayout.endLayout();
+}
+
+#define QFIXED_MAX (INT_MAX/256)
+
+ListViewDelegate::ListViewDelegate ( QObject* parent ) : QStyledItemDelegate ( parent )
+{
+
+}
+
+void drawSelectionRect(QPainter *painter, const QStyleOptionViewItemV4 &option, const QRect &rect)
+{
+	if ((option.state & QStyle::State_Selected))
+		painter->fillRect ( rect, option.palette.brush ( QPalette::Highlight ) );
+	else
+	{
+		QColor backgroundColor = option.palette.color(QPalette::Background);
+		backgroundColor.setAlpha(160);
+		painter->fillRect ( rect, QBrush(backgroundColor) );
+	}
+
+}
+
+void drawFocusRect(QPainter *painter, const QStyleOptionViewItemV4 &option, const QRect &rect)
+{
+	if (!(option.state & QStyle::State_HasFocus))
+		return;
+	QStyleOptionFocusRect opt;
+	opt.direction       = option.direction;
+	opt.fontMetrics     = option.fontMetrics;
+	opt.palette         = option.palette;
+	opt.rect            = rect;
+	//opt.state           = option.state | QStyle::State_KeyboardFocusChange | QStyle::State_Item;
+	auto col = option.state & QStyle::State_Selected ? QPalette::Highlight : QPalette::Base;
+	opt.backgroundColor = option.palette.color(col);
+	// Apparently some widget styles expect this hint to not be set
+	painter->setRenderHint(QPainter::Antialiasing, false);
+
+	QStyle *style = option.widget ? option.widget->style() : QApplication::style();
+
+	style->drawPrimitive(QStyle::PE_FrameFocusRect, &opt, painter, option.widget);
+
+	painter->setRenderHint(QPainter::Antialiasing);
+}
+
+static QSize viewItemTextSize ( const QStyleOptionViewItemV4 *option )
+{
+	QStyle *style = option->widget ? option->widget->style() : QApplication::style();
+	QTextOption textOption;
+	textOption.setWrapMode ( QTextOption::WrapAtWordBoundaryOrAnywhere );
+	QTextLayout textLayout;
+	textLayout.setTextOption ( textOption );
+	textLayout.setFont ( option->font );
+	textLayout.setText ( option->text );
+	const int textMargin = style->pixelMetric ( QStyle::PM_FocusFrameHMargin, option, option->widget ) + 1;
+	QRect bounds ( 0,0,100 - 2*textMargin,600 );
+	qreal height = 0, widthUsed = 0;
+	viewItemTextLayout ( textLayout, bounds.width(), height, widthUsed );
+	const QSize size ( qCeil ( widthUsed ), qCeil ( height ) );
+	return QSize ( size.width() + 2 * textMargin, size.height() );
+}
+
+void ListViewDelegate::paint ( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const
+{
+	QStyleOptionViewItemV4 opt = option;
+	initStyleOption ( &opt, index );
+	painter->save();
+	painter->setClipRect ( opt.rect );
+
+	opt.features |= QStyleOptionViewItem::WrapText;
+	opt.text = index.data().toString();
+	opt.textElideMode = Qt::ElideRight;
+	opt.displayAlignment = Qt::AlignTop | Qt::AlignHCenter;
+
+	QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
+
+	//const int iconSize =  style->pixelMetric(QStyle::PM_IconViewIconSize);
+	const int iconSize = 48;
+	QRect iconbox = opt.rect;
+	const int textMargin = style->pixelMetric ( QStyle::PM_FocusFrameHMargin, 0, opt.widget ) + 1;
+	QRect textRect = opt.rect;
+	QRect textHighlightRect = textRect;
+	// clip the decoration on top, remove width padding
+	textRect.adjust ( textMargin,iconSize + textMargin + 5,-textMargin,0 );
+	
+	textHighlightRect.adjust ( 0,iconSize + 5,0,0 );
+
+	// draw background
+	{
+		QSize textSize = viewItemTextSize ( &opt );
+		QPalette::ColorGroup cg;
+		QStyleOptionViewItemV4 opt2(opt);
+		
+		if((opt.widget && opt.widget->isEnabled()) || (opt.state & QStyle::State_Enabled))
+		{
+			if(! ( opt.state & QStyle::State_Active ))
+				cg = QPalette::Inactive;
+			else
+				cg = QPalette::Normal;
+		}
+		else
+		{
+			cg = QPalette::Disabled;
+		}
+		opt2.palette.setCurrentColorGroup(cg);
+		
+		// fill in background, if any
+		if ( opt.backgroundBrush.style() != Qt::NoBrush )
+		{
+			QPointF oldBO = painter->brushOrigin();
+			painter->setBrushOrigin ( opt.rect.topLeft() );
+			painter->fillRect ( opt.rect, opt.backgroundBrush );
+			painter->setBrushOrigin ( oldBO );
+		}
+		
+		if ( opt.showDecorationSelected )
+		{
+			drawSelectionRect(painter,opt2, opt.rect);
+			drawFocusRect(painter,opt2, opt.rect);
+			//painter->fillRect ( opt.rect, opt.palette.brush ( cg, QPalette::Highlight ) );
+		}
+		else
+		{
+			
+			//if ( opt.state & QStyle::State_Selected )
+			{
+				//QRect textRect = subElementRect ( QStyle::SE_ItemViewItemText,  opt, opt.widget );
+				//painter->fillRect ( textHighlightRect, opt.palette.brush ( cg, QPalette::Highlight ) );
+				drawSelectionRect(painter,opt2, textHighlightRect);
+				drawFocusRect(painter,opt2, textHighlightRect);
+			}
+		}
+	}
+
+	// draw the icon
+	{
+		QIcon::Mode mode = QIcon::Normal;
+		if ( ! ( opt.state & QStyle::State_Enabled ) )
+			mode = QIcon::Disabled;
+		else if ( opt.state & QStyle::State_Selected )
+			mode = QIcon::Selected;
+		QIcon::State state = opt.state & QStyle::State_Open ? QIcon::On : QIcon::Off;
+
+		iconbox.setHeight ( iconSize );
+		opt.icon.paint ( painter, iconbox, Qt::AlignCenter, mode, state );
+	}
+	// set the text colors
+	QPalette::ColorGroup cg = opt.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
+	if ( cg == QPalette::Normal && ! ( opt.state & QStyle::State_Active ) )
+		cg = QPalette::Inactive;
+	if ( opt.state & QStyle::State_Selected )
+	{
+		painter->setPen ( opt.palette.color ( cg, QPalette::HighlightedText ) );
+	}
+	else
+	{
+		painter->setPen ( opt.palette.color ( cg, QPalette::Text ) );
+	}
+
+	// draw the text
+	QTextOption textOption;
+	textOption.setWrapMode ( QTextOption::WrapAtWordBoundaryOrAnywhere );
+	textOption.setTextDirection ( opt.direction );
+	textOption.setAlignment ( QStyle::visualAlignment ( opt.direction, opt.displayAlignment ) );
+	QTextLayout textLayout;
+	textLayout.setTextOption ( textOption );
+	textLayout.setFont ( opt.font );
+	textLayout.setText ( opt.text );
+
+	qreal width, height;
+	viewItemTextLayout ( textLayout, textRect.width(), height, width );
+
+	const int lineCount = textLayout.lineCount();
+
+	const QRect layoutRect = QStyle::alignedRect ( opt.direction, opt.displayAlignment, QSize ( textRect.width(), int ( height ) ), textRect );
+	const QPointF position = layoutRect.topLeft();
+	for ( int i = 0; i < lineCount; ++i )
+	{
+		const QTextLine line = textLayout.lineAt ( i );
+		line.draw ( painter, position );
+	}
+
+	painter->restore();
+}
+
+
+QSize ListViewDelegate::sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const
+{
+	QStyleOptionViewItemV4 opt = option;
+	initStyleOption ( &opt, index );
+	opt.features |= QStyleOptionViewItem::WrapText;
+	opt.text = index.data().toString();
+	opt.textElideMode = Qt::ElideRight;
+	opt.displayAlignment = Qt::AlignTop | Qt::AlignHCenter;
+
+	QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
+	const int textMargin = style->pixelMetric ( QStyle::PM_FocusFrameHMargin, &option, opt.widget ) + 1;
+	int height = 48 + textMargin * 2 + 5; // TODO: turn constants into variables
+	QSize szz = viewItemTextSize ( &opt );
+	height += szz.height();
+	// FIXME: maybe the icon items could scale and keep proportions?
+	QSize sz ( 100,height );
+	return sz;
+}
+