Pave.
This commit is contained in:
Petr Mrázek
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/* Copyright 2013 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "InstanceDelegate.h"
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#include <QPainter>
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#include <QTextOption>
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#include <QTextLayout>
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#include <QApplication>
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#include <QtCore/qmath.h>
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#include "Common.h"
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#define QFIXED_MAX (INT_MAX / 256)
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ListViewDelegate::ListViewDelegate(QObject *parent) : QStyledItemDelegate(parent)
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{
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}
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void drawSelectionRect(QPainter *painter, const QStyleOptionViewItemV4 &option,
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const QRect &rect)
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{
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if ((option.state & QStyle::State_Selected))
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painter->fillRect(rect, option.palette.brush(QPalette::Highlight));
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else
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{
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QColor backgroundColor = option.palette.color(QPalette::Background);
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backgroundColor.setAlpha(160);
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painter->fillRect(rect, QBrush(backgroundColor));
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}
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}
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void drawFocusRect(QPainter *painter, const QStyleOptionViewItemV4 &option, const QRect &rect)
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{
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if (!(option.state & QStyle::State_HasFocus))
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return;
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QStyleOptionFocusRect opt;
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opt.direction = option.direction;
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opt.fontMetrics = option.fontMetrics;
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opt.palette = option.palette;
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opt.rect = rect;
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// opt.state = option.state | QStyle::State_KeyboardFocusChange |
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// QStyle::State_Item;
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auto col = option.state & QStyle::State_Selected ? QPalette::Highlight : QPalette::Base;
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opt.backgroundColor = option.palette.color(col);
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// Apparently some widget styles expect this hint to not be set
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painter->setRenderHint(QPainter::Antialiasing, false);
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QStyle *style = option.widget ? option.widget->style() : QApplication::style();
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style->drawPrimitive(QStyle::PE_FrameFocusRect, &opt, painter, option.widget);
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painter->setRenderHint(QPainter::Antialiasing);
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}
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static QSize viewItemTextSize(const QStyleOptionViewItemV4 *option)
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{
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QStyle *style = option->widget ? option->widget->style() : QApplication::style();
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QTextOption textOption;
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textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
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QTextLayout textLayout;
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textLayout.setTextOption(textOption);
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textLayout.setFont(option->font);
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textLayout.setText(option->text);
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const int textMargin =
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style->pixelMetric(QStyle::PM_FocusFrameHMargin, option, option->widget) + 1;
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QRect bounds(0, 0, 100 - 2 * textMargin, 600);
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qreal height = 0, widthUsed = 0;
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viewItemTextLayout(textLayout, bounds.width(), height, widthUsed);
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const QSize size(qCeil(widthUsed), qCeil(height));
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return QSize(size.width() + 2 * textMargin, size.height());
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}
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void ListViewDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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QStyleOptionViewItemV4 opt = option;
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initStyleOption(&opt, index);
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painter->save();
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painter->setClipRect(opt.rect);
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opt.features |= QStyleOptionViewItem::WrapText;
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opt.text = index.data().toString();
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opt.textElideMode = Qt::ElideRight;
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opt.displayAlignment = Qt::AlignTop | Qt::AlignHCenter;
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QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
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// const int iconSize = style->pixelMetric(QStyle::PM_IconViewIconSize);
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const int iconSize = 48;
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QRect iconbox = opt.rect;
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const int textMargin = style->pixelMetric(QStyle::PM_FocusFrameHMargin, 0, opt.widget) + 1;
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QRect textRect = opt.rect;
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QRect textHighlightRect = textRect;
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// clip the decoration on top, remove width padding
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textRect.adjust(textMargin, iconSize + textMargin + 5, -textMargin, 0);
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textHighlightRect.adjust(0, iconSize + 5, 0, 0);
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// draw background
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{
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// FIXME: unused
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// QSize textSize = viewItemTextSize ( &opt );
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QPalette::ColorGroup cg;
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QStyleOptionViewItemV4 opt2(opt);
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if ((opt.widget && opt.widget->isEnabled()) || (opt.state & QStyle::State_Enabled))
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{
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if (!(opt.state & QStyle::State_Active))
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cg = QPalette::Inactive;
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else
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cg = QPalette::Normal;
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}
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else
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{
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cg = QPalette::Disabled;
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}
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opt2.palette.setCurrentColorGroup(cg);
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// fill in background, if any
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if (opt.backgroundBrush.style() != Qt::NoBrush)
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{
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QPointF oldBO = painter->brushOrigin();
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painter->setBrushOrigin(opt.rect.topLeft());
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painter->fillRect(opt.rect, opt.backgroundBrush);
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painter->setBrushOrigin(oldBO);
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}
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if (opt.showDecorationSelected)
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{
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drawSelectionRect(painter, opt2, opt.rect);
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drawFocusRect(painter, opt2, opt.rect);
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// painter->fillRect ( opt.rect, opt.palette.brush ( cg, QPalette::Highlight ) );
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}
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else
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{
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// if ( opt.state & QStyle::State_Selected )
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{
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// QRect textRect = subElementRect ( QStyle::SE_ItemViewItemText, opt,
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// opt.widget );
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// painter->fillRect ( textHighlightRect, opt.palette.brush ( cg,
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// QPalette::Highlight ) );
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drawSelectionRect(painter, opt2, textHighlightRect);
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drawFocusRect(painter, opt2, textHighlightRect);
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}
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}
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}
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// draw the icon
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{
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QIcon::Mode mode = QIcon::Normal;
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if (!(opt.state & QStyle::State_Enabled))
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mode = QIcon::Disabled;
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else if (opt.state & QStyle::State_Selected)
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mode = QIcon::Selected;
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QIcon::State state = opt.state & QStyle::State_Open ? QIcon::On : QIcon::Off;
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iconbox.setHeight(iconSize);
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opt.icon.paint(painter, iconbox, Qt::AlignCenter, mode, state);
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}
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// set the text colors
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QPalette::ColorGroup cg =
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opt.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
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if (cg == QPalette::Normal && !(opt.state & QStyle::State_Active))
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cg = QPalette::Inactive;
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if (opt.state & QStyle::State_Selected)
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{
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painter->setPen(opt.palette.color(cg, QPalette::HighlightedText));
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}
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else
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{
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painter->setPen(opt.palette.color(cg, QPalette::Text));
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}
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// draw the text
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QTextOption textOption;
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textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
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textOption.setTextDirection(opt.direction);
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textOption.setAlignment(QStyle::visualAlignment(opt.direction, opt.displayAlignment));
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QTextLayout textLayout;
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textLayout.setTextOption(textOption);
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textLayout.setFont(opt.font);
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textLayout.setText(opt.text);
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qreal width, height;
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viewItemTextLayout(textLayout, textRect.width(), height, width);
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const int lineCount = textLayout.lineCount();
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const QRect layoutRect = QStyle::alignedRect(
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opt.direction, opt.displayAlignment, QSize(textRect.width(), int(height)), textRect);
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const QPointF position = layoutRect.topLeft();
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for (int i = 0; i < lineCount; ++i)
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{
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const QTextLine line = textLayout.lineAt(i);
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line.draw(painter, position);
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}
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painter->restore();
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}
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QSize ListViewDelegate::sizeHint(const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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QStyleOptionViewItemV4 opt = option;
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initStyleOption(&opt, index);
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opt.features |= QStyleOptionViewItem::WrapText;
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opt.text = index.data().toString();
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opt.textElideMode = Qt::ElideRight;
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opt.displayAlignment = Qt::AlignTop | Qt::AlignHCenter;
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QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
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const int textMargin =
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style->pixelMetric(QStyle::PM_FocusFrameHMargin, &option, opt.widget) + 1;
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int height = 48 + textMargin * 2 + 5; // TODO: turn constants into variables
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QSize szz = viewItemTextSize(&opt);
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height += szz.height();
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// FIXME: maybe the icon items could scale and keep proportions?
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QSize sz(100, height);
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return sz;
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}
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@ -1,27 +0,0 @@
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/* Copyright 2013 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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||||
* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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||||
*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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||||
*/
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#pragma once
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#include <QStyledItemDelegate>
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class ListViewDelegate : public QStyledItemDelegate
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{
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public:
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explicit ListViewDelegate ( QObject* parent = 0 );
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protected:
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void paint ( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const;
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QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const;
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};
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