Create the new architecture for KCategorizedView. Now DolphinModel is created, inheriting KDirModel for returning valid data for the role of the category of

an item. DolphinSortFilterProxyModel implements now methods lessThanCategoryMethod and lessThanGeneralMethod from KCategorizedSortFilterProxyModel.

The only thing that needs to be adapted is the keyboard navigation on the KCategorizedView.

CCMAIL: [email protected]

svn path=/trunk/KDE/kdebase/apps/; revision=713319

1 files changed, 302 insertions, 0 deletions

diff --git a/src/dolphincategorydrawer.cpp b/src/dolphincategorydrawer.cpp
new file mode 100644
index 000000000..2479f2755
--- /dev/null
+++ b/src/dolphincategorydrawer.cpp
@@ -0,0 +1,302 @@
+/**
+  * This file is part of the KDE project
+  * Copyright (C) 2007 Rafael Fernández López <[email protected]>
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Library General Public
+  * License as published by the Free Software Foundation; either
+  * version 2 of the License, or (at your option) any later version.
+  *
+  * This library 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
+  * Library General Public License for more details.
+  *
+  * You should have received a copy of the GNU Library General Public License
+  * along with this library; see the file COPYING.LIB.  If not, write to
+  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  * Boston, MA 02110-1301, USA.
+  */
+
+#include "dolphincategorydrawer.h"
+
+#include <QPainter>
+#include <QFile>
+#include <QDir>
+
+#include <kiconloader.h>
+#include <kcategorizedsortfilterproxymodel.h>
+#include <kpixmapeffect.h>
+#include <kuser.h>
+
+#include <config-nepomuk.h>
+#ifdef HAVE_NEPOMUK
+#include <nepomuk/global.h>
+#include <nepomuk/resource.h>
+#include <nepomuk/tag.h>
+#endif
+
+#include "dolphinview.h"
+#include "dolphinmodel.h"
+
+DolphinCategoryDrawer::DolphinCategoryDrawer()
+{
+}
+
+DolphinCategoryDrawer::~DolphinCategoryDrawer()
+{
+}
+
+void DolphinCategoryDrawer::drawCategory(const QModelIndex &index, int sortRole,
+                                         const QStyleOption &option, QPainter *painter) const
+{
+    QRect starRect = option.rect;
+
+    int iconSize =  KIconLoader::global()->currentSize(K3Icon::Small);
+    QVariant categoryVariant = index.model()->data(index, KCategorizedSortFilterProxyModel::CategoryRole);
+
+    if (!categoryVariant.isValid())
+    {
+        return;
+    }
+
+    const QString category = categoryVariant.toString();
+
+    QColor color = option.palette.color(QPalette::Text);
+
+    painter->save();
+    painter->setRenderHint(QPainter::Antialiasing);
+
+    QStyleOptionButton opt;
+
+    opt.rect = option.rect;
+    opt.palette = option.palette;
+    opt.direction = option.direction;
+    opt.text = category;
+
+    if (option.state & QStyle::State_MouseOver)
+    {
+        QColor hover = option.palette.color(QPalette::Highlight).light();
+        hover.setAlpha(88);
+
+        QLinearGradient gradient(option.rect.topLeft(),
+                                 option.rect.bottomRight());
+        gradient.setColorAt(option.direction == Qt::LeftToRight ? 0
+                                                                : 1, hover);
+        gradient.setColorAt(option.direction == Qt::LeftToRight ? 1
+                                                                : 0, Qt::transparent);
+
+        painter->fillRect(option.rect, gradient);
+    }
+
+    QFont painterFont = painter->font();
+    painterFont.setWeight(QFont::Bold);
+    QFontMetrics metrics(painterFont);
+    painter->setFont(painterFont);
+
+    QPainterPath path;
+    path.addRect(option.rect.left(),
+                 option.rect.bottom() - 2,
+                 option.rect.width(),
+                 2);
+
+    QLinearGradient gradient(option.rect.topLeft(),
+                             option.rect.bottomRight());
+    gradient.setColorAt(option.direction == Qt::LeftToRight ? 0
+                                                            : 1, color);
+    gradient.setColorAt(option.direction == Qt::LeftToRight ? 1
+                                                            : 0, Qt::transparent);
+
+    painter->setBrush(gradient);
+    painter->fillPath(path, gradient);
+
+    if (option.direction == Qt::LeftToRight)
+    {
+        opt.rect.setLeft(opt.rect.left() + (iconSize / 4));
+        starRect.setLeft(starRect.left() + (iconSize / 4));
+        starRect.setRight(starRect.right() + (iconSize / 4));
+    }
+    else
+    {
+        opt.rect.setRight(opt.rect.width() - (iconSize / 4));
+        starRect.setLeft(starRect.width() - iconSize);
+        starRect.setRight(starRect.width() - (iconSize / 4));
+    }
+
+    bool paintIcon = true;
+    bool paintText = true;
+
+    QPixmap icon;
+    switch (index.column()) {
+        case KDirModel::Name:
+            paintIcon = false;
+            break;
+
+        case KDirModel::Size:
+            paintIcon = false;
+            break;
+
+        case KDirModel::ModifiedTime:
+            paintIcon = false;
+            break;
+
+        case KDirModel::Permissions:
+            paintIcon = false; // TODO: let's think about how to represent permissions
+            break;
+
+        case KDirModel::Owner: {
+            opt.rect.setTop(option.rect.top() + (iconSize / 4));
+            KUser user(category);
+            if (QFile::exists(user.homeDir() + QDir::separator() + ".face.icon"))
+            {
+                icon = QPixmap::fromImage(QImage(user.homeDir() + QDir::separator() + ".face.icon")).scaled(iconSize, iconSize);
+            }
+            else
+            {
+                icon = KIconLoader::global()->loadIcon("user", K3Icon::Small);
+            }
+            break;
+        }
+
+        case KDirModel::Group:
+            paintIcon = false;
+            break;
+
+        case KDirModel::Type: {
+            opt.rect.setTop(option.rect.top() + (option.rect.height() / 2) - (iconSize / 2));
+            const KCategorizedSortFilterProxyModel *proxyModel = static_cast<const KCategorizedSortFilterProxyModel*>(index.model());
+            const DolphinModel *model = static_cast<const DolphinModel*>(proxyModel->sourceModel());
+            KFileItem item = model->itemForIndex(proxyModel->mapToSource(index));
+            // This is the only way of getting the icon right. Others will fail on corner
+            // cases like the item representing this group has been set a different icon,
+            // so the group icon drawn is that one particularly. This way assures the drawn
+            // icon is the one of the mimetype of the group itself. (ereslibre)
+            icon = KIconLoader::global()->loadMimeTypeIcon(item.mimeTypePtr()->iconName(),
+                                                           K3Icon::Small);
+            break;
+        }
+
+#ifdef HAVE_NEPOMUK
+        case DolphinModel::Rating: {
+            paintText = false;
+            paintIcon = false;
+
+            starRect.setTop(option.rect.top() + (option.rect.height() / 2) - (iconSize / 2));
+            starRect.setSize(QSize(iconSize, iconSize));
+
+            QPixmap pixmap = KIconLoader::global()->loadIcon("rating", K3Icon::Small);
+            QPixmap smallPixmap = KIconLoader::global()->loadIcon("rating", K3Icon::NoGroup, iconSize / 2);
+            QPixmap disabledPixmap = KIconLoader::global()->loadIcon("rating", K3Icon::Small);
+
+            KPixmapEffect::toGray(disabledPixmap, false);
+
+            int rating = category.toInt();
+
+            for (int i = 0; i < rating - (rating % 2); i += 2) {
+                painter->drawPixmap(starRect, pixmap);
+
+                if (option.direction == Qt::LeftToRight)
+                {
+                    starRect.setLeft(starRect.left() + iconSize + (iconSize / 4) /* separator between stars */);
+                    starRect.setRight(starRect.right() + iconSize + (iconSize / 4) /* separator between stars */);
+                }
+                else
+                {
+                    starRect.setLeft(starRect.left() - iconSize - (iconSize / 4) /* separator between stars */);
+                    starRect.setRight(starRect.right() - iconSize - (iconSize / 4) /* separator between stars */);
+                }
+            }
+
+            if (rating && rating % 2) {
+                if (option.direction == Qt::RightToLeft)
+                {
+                    starRect.setLeft(starRect.left() + (iconSize / 2) /* separator between stars */);
+                    //starRect.setRight(starRect.right() + (iconSize / 2) /* separator between stars */);
+                }
+
+                starRect.setTop(option.rect.top() + (option.rect.height() / 2) - (iconSize / 4));
+                starRect.setSize(QSize(iconSize / 2, iconSize / 2));
+                painter->drawPixmap(starRect, smallPixmap);
+                starRect.setTop(opt.rect.top() + (option.rect.height() / 2) - (iconSize / 2));
+                //starRect.setSize(QSize(iconSize / 2, iconSize / 2));
+
+                if (option.direction == Qt::LeftToRight)
+                {
+                    starRect.setLeft(starRect.left() + (iconSize / 2) + (iconSize / 4));
+                    starRect.setRight(starRect.right() + (iconSize / 2) + (iconSize / 4));
+                }
+                else
+                {
+                    starRect.setLeft(starRect.left() - (iconSize / 2) - (iconSize / 4));
+                    starRect.setRight(starRect.right() - (iconSize / 2) - (iconSize / 4));
+                }
+
+                if (option.direction == Qt::RightToLeft)
+                {
+                    starRect.setLeft(starRect.left() - (iconSize / 2));
+                    starRect.setRight(starRect.right() - (iconSize / 2));
+                }
+
+                starRect.setSize(QSize(iconSize, iconSize));
+            }
+
+            for (int i = rating; i < 9; i += 2) {
+                painter->drawPixmap(starRect, disabledPixmap);
+
+                if (option.direction == Qt::LeftToRight)
+                {
+                    starRect.setLeft(starRect.left() + iconSize + (iconSize / 4));
+                    starRect.setRight(starRect.right() + iconSize + (iconSize / 4));
+                }
+                else
+                {
+                    starRect.setLeft(starRect.left() - iconSize - (iconSize / 4));
+                    starRect.setRight(starRect.right() - iconSize - (iconSize / 4));
+                }
+            }
+
+            break;
+        }
+
+        case DolphinModel::Tags:
+            paintIcon = false;
+            break;
+#endif
+    }
+
+    if (paintIcon) {
+        painter->drawPixmap(QRect(option.direction == Qt::LeftToRight ? opt.rect.left()
+                                                                      : opt.rect.right() - iconSize, opt.rect.top(), iconSize, iconSize), icon);
+
+        if (option.direction == Qt::LeftToRight)
+        {
+            opt.rect.setLeft(opt.rect.left() + iconSize + (iconSize / 4));
+        }
+    }
+
+    if (paintText) {
+        opt.rect.setTop(option.rect.top() + (iconSize / 4));
+        opt.rect.setBottom(opt.rect.bottom() - 2);
+        painter->setPen(color);
+
+        QRect textRect = opt.rect;
+
+        if (option.direction == Qt::RightToLeft)
+        {
+            textRect.setWidth(textRect.width() - (paintIcon ? iconSize + (iconSize / 4)
+                                                            : (iconSize / 4)));
+        }
+
+        painter->drawText(textRect, Qt::AlignVCenter | Qt::AlignLeft,
+        metrics.elidedText(category, Qt::ElideRight, textRect.width()));
+    }
+
+    painter->restore();
+}
+
+int DolphinCategoryDrawer::categoryHeight(const QStyleOption &option) const
+{
+    int iconSize = KIconLoader::global()->currentSize(K3Icon::Small);
+
+    return qMax(option.fontMetrics.height() + (iconSize / 4) * 2 + 2, iconSize + (iconSize / 4) * 2 + 2) /* 2 gradient */;
+}