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This commit is contained in:
Petr Mrázek
2014-02-04 01:40:51 +01:00
parent b82eb5873e
commit 7839c4ecc0
21 changed files with 41 additions and 514 deletions
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231
gui/widgets/InstanceDelegate.cpp
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/* 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>
#include "Common.h"
#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
{
// FIXME: unused
// 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;
}

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gui/widgets/InstanceDelegate.h
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/* 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.
*/
#pragma once
#include <QStyledItemDelegate>
class ListViewDelegate : public QStyledItemDelegate
{
public:
explicit ListViewDelegate ( QObject* parent = 0 );
protected:
void paint ( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const;
QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const;
};