kwin/tabbox/desktopitemdelegate.cpp

313 lines
13 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2009 Martin Gräßlin <kde@martin-graesslin.com>
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 2 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/>.
*********************************************************************/
//own
#include "desktopitemdelegate.h"
// tabbox
#include "clientitemdelegate.h"
#include "clientmodel.h"
#include "desktopmodel.h"
#include "tabboxconfig.h"
// Qt
#include <QPainter>
// KDE
#include <KGlobalSettings>
#include <KIcon>
#include <KIconEffect>
#include <KIconLoader>
#include <Plasma/FrameSvg>
#include <Plasma/Theme>
namespace KWin
{
namespace TabBox
{
DesktopItemDelegate::DesktopItemDelegate(QObject* parent)
: QAbstractItemDelegate(parent)
{
m_frame = new Plasma::FrameSvg(this);
m_frame->setImagePath("widgets/viewitem");
m_frame->setElementPrefix("hover");
m_frame->setCacheAllRenderedFrames(true);
m_frame->setEnabledBorders(Plasma::FrameSvg::AllBorders);
m_clientDelegate = new ClientItemDelegate(this);
}
DesktopItemDelegate::~DesktopItemDelegate()
{
}
void DesktopItemDelegate::setConfig(const KWin::TabBox::ItemLayoutConfig& config)
{
m_config = config;
}
void DesktopItemDelegate::setLayouts(QMap< QString, ItemLayoutConfig >& layouts)
{
m_layouts = layouts;
}
QSize DesktopItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
{
Q_UNUSED(option)
if (!index.isValid())
return QSize(0, 0);
qreal width = 0.0;
qreal height = 0.0;
for (int i = 0; i < m_config.count(); i++) {
QSizeF row = rowSize(index, i);
width = qMax<qreal>(width, row.width());
height += row.height();
}
qreal left, top, right, bottom;
m_frame->getMargins(left, top, right, bottom);
// find icon elements which have a row span
for (int i = 0; i < m_config.count(); i++) {
ItemLayoutConfigRow row = m_config.row(i);
for (int j = 0; j < row.count(); j++) {
ItemLayoutConfigRowElement element = row.element(j);
if (element.type() == ItemLayoutConfigRowElement::ElementIcon && element.isRowSpan())
height = qMax<qreal>(height, element.iconSize().height());
}
}
return QSize(width + left + right, height + top + bottom);
}
void DesktopItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
if (!index.isValid())
return;
qreal left, top, right, bottom;
m_frame->getMargins(left, top, right, bottom);
qreal y = option.rect.top() + top;
for (int i = 0; i < m_config.count(); i++) {
qreal rowHeight = rowSize(index, i).height();
qreal x = option.rect.left() + left ;
ItemLayoutConfigRow row = m_config.row(i);
for (int j = 0; j < row.count(); j++) {
ItemLayoutConfigRowElement element = row.element(j);
switch(element.type()) {
case ItemLayoutConfigRowElement::ElementDesktopName: {
x += paintTextElement(painter, option, element, x, y, rowHeight,
index.model()->data(index, Qt::DisplayRole).toString());
break;
}
case ItemLayoutConfigRowElement::ElementIcon: {
qreal rectWidth = (qreal)option.rect.width();
qreal maxWidth = qMin<qreal>(element.width(), rectWidth);
if (element.isStretch())
maxWidth = qMax<qreal>(maxWidth, option.rect.left() + option.rect.width() - x);
qreal iconX = x + maxWidth * 0.5 - element.iconSize().width() * 0.5;
qreal iconY = y + rowHeight * 0.5 - element.iconSize().height() * 0.5;
if (element.isRowSpan())
iconY = option.rect.top() + option.rect.height() * 0.5 - element.iconSize().height() * 0.5;
QRectF iconRect = QRectF(iconX, iconY, element.iconSize().width(), element.iconSize().height());
// icon
painter->save();
KIcon icon("user-desktop");
QPixmap iconPixmap = icon.pixmap(QSize(64, 64));
if (m_config.isHighlightSelectedIcons() && option.state & QStyle::State_Selected) {
KIconEffect *effect = KIconLoader::global()->iconEffect();
iconPixmap = effect->apply(iconPixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
}
if (m_config.isGrayscaleDeselectedIcons() && !(option.state & QStyle::State_Selected)) {
KIconEffect *effect = KIconLoader::global()->iconEffect();
iconPixmap = effect->apply(iconPixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
}
QRectF sourceRect = QRectF(0.0, 0.0, iconPixmap.width(), iconPixmap.height());
painter->drawPixmap(iconRect, iconPixmap, sourceRect);
painter->restore();
x += element.width();
break;
}
case ItemLayoutConfigRowElement::ElementEmpty:
x += element.width();
break;
case ItemLayoutConfigRowElement::ElementClientList: {
m_clientDelegate->setConfig(m_layouts[ element.clientListLayoutName()]);
ClientModel* clientModel = static_cast< ClientModel* >(
index.model()->data(index, DesktopModel::ClientModelRole).value< void* >());
TabBoxClientList clients = clientModel->clientList();
qreal partX = 0.0;
qreal partY = 0.0;
qreal itemWidth = element.width();
if (element.isStretch())
itemWidth = option.rect.x() + option.rect.width() - x;
foreach (TabBoxClient * client, clients) {
if (!client)
continue;
QModelIndex clientIndex = clientModel->index(client);
QStyleOptionViewItem itemOption = option;
itemOption.state = QStyle::State_Item;
QSizeF itemSize = m_clientDelegate->sizeHint(itemOption, clientIndex);
// TabBoxHandler gives the same config to the client models as used here
// so row and column do not represent the actual used layout for this list
switch(element.clientListLayoutMode()) {
case TabBoxConfig::HorizontalLayout:
itemOption.rect = QRect(partX + x, y, itemWidth - partX, rowHeight);
partX += qMin(itemWidth - partX, itemSize.width());
break;
case TabBoxConfig::VerticalLayout:
itemOption.rect = QRect(x, y + partY, itemWidth, itemSize.height());
partY += itemSize.height();
break;
case TabBoxConfig::HorizontalVerticalLayout:
// TODO: complicated
break;
default:
break; // nothing
}
if ((partX > itemWidth) || (partX + x > option.rect.x() + option.rect.width())) {
partX = itemWidth;
break;
}
if ((partY > rowHeight) || (y + partY > option.rect.y() + option.rect.height())) {
partY = rowHeight;
break;
}
m_clientDelegate->paint(painter, itemOption, clientIndex);
}
x += itemWidth;
break;
}
default:
break; // do nothing
}
}
y += rowHeight;
}
}
qreal DesktopItemDelegate::paintTextElement(QPainter* painter, const QStyleOptionViewItem& option,
const ItemLayoutConfigRowElement& element,
const qreal& x, const qreal& y, const qreal& rowHeight, QString text) const
{
painter->save();
QFont font = KGlobalSettings::generalFont();
if (element.isSmallTextSize())
font = KGlobalSettings::smallestReadableFont();
font.setBold(element.isBold());
font.setItalic(element.isItalic());
text = element.prefix() + text + element.suffix();
painter->setFont(font);
painter->setPen(Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor));
qreal width = element.width();
if (element.isStretch()) {
qreal left, top, right, bottom;
m_frame->getMargins(left, top, right, bottom);
width = option.rect.left() + option.rect.width() - x - right;
}
text = QFontMetricsF(font).elidedText(text, Qt::ElideRight, width);
QRectF rect = QRectF(x, y, width, rowHeight);
painter->drawText(rect, element.alignment() | Qt::TextSingleLine, text);
painter->restore();
return width;
}
QSizeF DesktopItemDelegate::rowSize(const QModelIndex& index, int row) const
{
ItemLayoutConfigRow currentRow = m_config.row(row);
qreal rowWidth = 0.0;
qreal rowHeight = 0.0;
for (int j = 0; j < currentRow.count(); j++) {
ItemLayoutConfigRowElement element = currentRow.element(j);
switch(element.type()) {
case ItemLayoutConfigRowElement::ElementDesktopName: {
QSizeF size = textElementSizeHint(index, element,
index.model()->data(index, Qt::DisplayRole).toString());
rowWidth += size.width();
rowHeight = qMax<qreal>(rowHeight, size.height());
break;
}
case ItemLayoutConfigRowElement::ElementIcon:
rowWidth += qMax<qreal>(element.iconSize().width(), element.width());
if (!element.isRowSpan())
rowHeight = qMax<qreal>(rowHeight, element.iconSize().height());
break;
case ItemLayoutConfigRowElement::ElementEmpty:
rowWidth += element.width();
break;
case ItemLayoutConfigRowElement::ElementClientList: {
m_clientDelegate->setConfig(m_layouts[ element.clientListLayoutName()]);
ClientModel* clientModel = static_cast< ClientModel* >(
index.model()->data(index, DesktopModel::ClientModelRole).value< void* >());
TabBoxClientList clients = clientModel->clientList();
qreal elementWidth = 0.0;
qreal elementHeight = 0.0;
foreach (TabBoxClient * client, clients) {
if (!client)
continue;
QModelIndex clientIndex = clientModel->index(client);
QStyleOptionViewItem itemOption = QStyleOptionViewItem();
QSizeF itemSize = m_clientDelegate->sizeHint(itemOption, clientIndex);
switch(element.clientListLayoutMode()) {
case TabBoxConfig::HorizontalLayout:
elementWidth += itemSize.width();
elementHeight = qMax<qreal>(elementHeight, itemSize.height());
break;
case TabBoxConfig::VerticalLayout:
elementWidth = qMax<qreal>(elementWidth, itemSize.width());
elementHeight += itemSize.height();
break;
case TabBoxConfig::HorizontalVerticalLayout:
// TODO: complicated
break;
default:
break; // nothing
}
}
if (element.isStretch())
rowWidth += elementWidth;
else
rowWidth += qMin(elementWidth, element.width());
rowHeight = qMax<qreal>(rowHeight, elementHeight);
break;
}
default:
break; // do nothing
}
}
return QSizeF(rowWidth, rowHeight);
}
QSizeF DesktopItemDelegate::textElementSizeHint(const QModelIndex& index, const ItemLayoutConfigRowElement& element, QString text) const
{
Q_UNUSED(index)
QFont font = KGlobalSettings::generalFont();
if (element.isSmallTextSize())
font = KGlobalSettings::smallestReadableFont();
font.setBold(element.isBold());
font.setItalic(element.isItalic());
text = element.prefix() + text + element.suffix();
QFontMetricsF fm(font);
qreal width = element.width();
if (element.isStretch())
width = fm.width(text);
qreal height = fm.boundingRect(text).height();
return QSizeF(width, height);
}
} // namespace Tabbox
} // namespace KWin