iconview.cpp

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/* ============================================================
 * File  : iconview.cpp
 * Description :
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published bythe Free Software Foundation;
 * either version 2, 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.
 *
 * ============================================================ */

// ANSI C headers
#include <cmath>

// C++ headers
#include <algorithm>
using namespace std;

// Qt headers
#include <qevent.h>
#include <qimage.h>
#include <qdir.h>

// MythTV plugin headers
#include <mythtv/mythcontext.h>
#include <mythtv/uitypes.h>
#include <mythtv/uilistbtntype.h>
#include <mythtv/xmlparse.h>
#include <mythtv/dialogbox.h>
#include <mythtv/mythdbcon.h>
#include <mythtv/mythdialogs.h>
#include <mythtv/mythmediamonitor.h>

// MythGallery headers
#include "galleryutil.h"
#include "gallerysettings.h"
#include "thumbgenerator.h"
#include "iconview.h"
#include "singleview.h"
#include "glsingleview.h"

#include "constants.h"

#define LOC QString("IconView: ")
#define LOC_ERR QString("IconView, Error: ")

IconView::IconView(const QString   &galleryDir,
                   MythMediaDevice *initialDevice,
                   MythMainWindow  *parent)
    : MythDialog(parent, "IconView"),
      m_galleryDir(galleryDir),

      m_theme(NULL),            m_menuRect(0,0,0,0),
      m_textRect(0,0,0,0),      m_viewRect(0,0,0,0),

      m_inMenu(false),          m_inSubMenu(false),
      m_menuType(NULL),         m_submenuType(NULL),

      m_isGallery(false),       m_showDevices(false),
      m_currDir(QString::null),
      m_currDevice(initialDevice),

      m_currRow(0),             m_currCol(0),
      m_lastRow(0),             m_lastCol(0),
      m_topRow(0),
      m_nRows(0),               m_nCols(0),

      m_spaceW(0),              m_spaceH(0),
      m_thumbW(0),              m_thumbH(0),

      m_thumbGen(new ThumbGenerator(
                     this,
                     (int)(m_thumbW - 10 * wmult),
                     (int)(m_thumbH - 10 * hmult))),

      m_showcaption(gContext->GetNumSetting("GalleryOverlayCaption", 0)),
      m_sortorder(gContext->GetNumSetting("GallerySortOrder", 0)),
      m_useOpenGL(gContext->GetNumSetting("SlideshowUseOpenGL", 0)),
      m_recurse(gContext->GetNumSetting("GalleryRecursiveSlideshow", 0)),
      m_paths(QStringList::split(
                  ":", gContext->GetSetting("GalleryImportDirs"))),
      m_errorStr(QString::null)
{
    m_itemList.setAutoDelete(true);
    m_itemDict.setAutoDelete(false);

    setNoErase();

    QDir dir(m_galleryDir);
    if (!dir.exists() || !dir.isReadable())
    {
        m_errorStr = tr("MythGallery Directory '%1' does not exist "
                        "or is unreadable.").arg(m_galleryDir);
        return;
    }

    if (!LoadTheme())
    {
        m_errorStr = tr("MythGallery failed to load theme, "
                        "see console for details.");
        return;
    }

    updateBackground();

    SetupMediaMonitor();

    srand(time(NULL));
}

IconView::~IconView()
{
    ClearMenu(m_submenuType);
    ClearMenu(m_menuType);

    if (m_thumbGen)
    {
        delete m_thumbGen;
        m_thumbGen = NULL;
    }

    if (m_theme)
    {
        delete m_theme;
        m_theme = NULL;
    }
}

void IconView::SetupMediaMonitor(void)
{
#ifndef _WIN32
    MediaMonitor *mon = MediaMonitor::GetMediaMonitor();
    if (m_currDevice && mon && mon->ValidateAndLock(m_currDevice))
    {
        bool mounted = m_currDevice->isMounted(true);
        if (!mounted)
            mounted = m_currDevice->mount();

        if (mounted)
        {
            connect(m_currDevice,
                SIGNAL(statusChanged(MediaStatus, MythMediaDevice*)),
                SLOT(mediaStatusChanged(MediaStatus, MythMediaDevice*)));

            LoadDirectory(m_currDevice->getMountPath(), true);

            mon->Unlock(m_currDevice);
            return;
        }
        else 
        {
            DialogBox *dlg = new DialogBox(gContext->GetMainWindow(),
                             tr("Failed to mount device: ") + 
                             m_currDevice->getDevicePath() + "\n\n" +
                             tr("Showing the default MythGallery directory."));
            dlg->AddButton(tr("OK"));
            dlg->exec();
            dlg->deleteLater();
            mon->Unlock(m_currDevice);
        }
    }
    m_currDevice = NULL;
    LoadDirectory(m_galleryDir, true);
#endif // _WIN32
}

void IconView::paintEvent(QPaintEvent *e)
{
    if (e->rect().intersects(m_menuRect))
        UpdateMenu();
    if (e->rect().intersects(m_textRect))
        UpdateText();
    if (e->rect().intersects(m_viewRect))
        UpdateView();
}

void IconView::updateBackground(void)
{
    QPixmap bground(size());
    bground.fill(this, 0, 0);

    QPainter tmp(&bground);

    LayerSet *container = m_theme->GetSet("background");
    if (container)
    {
        container->Draw(&tmp, 0, 0);
    }

    tmp.end();
    m_background = bground;

    setPaletteBackgroundPixmap(m_background);
}

void IconView::UpdateMenu(void)
{
    QPixmap pix(m_menuRect.size());
    pix.fill(this, m_menuRect.topLeft());
    QPainter p(&pix);

    LayerSet *container = m_theme->GetSet("menu");
    if (container)
    {
        container->Draw(&p, 0, 0);
        container->Draw(&p, 1, 0);
        container->Draw(&p, 2, 0);
        container->Draw(&p, 3, 0);
        container->Draw(&p, 4, 0);
        container->Draw(&p, 5, 0);
        container->Draw(&p, 6, 0);
        container->Draw(&p, 7, 0);
        container->Draw(&p, 8, 0);
    }
    p.end();

    bitBlt(this, m_menuRect.left(), m_menuRect.top(),
           &pix, 0, 0, -1, -1, Qt::CopyROP);
}

void IconView::UpdateText(void)
{
    QPixmap pix(m_textRect.size());
    pix.fill(this, m_textRect.topLeft());
    QPainter p(&pix);

    LayerSet *container = m_theme->GetSet("text");
    if (container)
    {
        UITextType *ttype = (UITextType*) container->GetType("text");
        if (ttype)
        {
            ThumbItem *item = m_itemList.at(m_currRow * m_nCols + m_currCol);

            QString caption = "";
            if (item)
            {
                item->InitCaption(m_showcaption);
                caption = item->GetCaption();
                caption = (caption.isNull()) ? "" : caption;
            }
            ttype->SetText(caption);
        }

        container->Draw(&p, 0, 0);
        container->Draw(&p, 1, 0);
        container->Draw(&p, 2, 0);
        container->Draw(&p, 3, 0);
        container->Draw(&p, 4, 0);
        container->Draw(&p, 5, 0);
        container->Draw(&p, 6, 0);
        container->Draw(&p, 7, 0);
        container->Draw(&p, 8, 0);
    }
    p.end();

    bitBlt(this, m_textRect.left(), m_textRect.top(),
           &pix, 0, 0, -1, -1, Qt::CopyROP);
}

void IconView::UpdateView(void)
{
    QPixmap pix(m_viewRect.size());
    pix.fill(this, m_viewRect.topLeft());
    QPainter p(&pix);
    p.setPen(Qt::white);

    LayerSet *container = m_theme->GetSet("view");
    if (container)
    {
        int upArrow = (m_topRow == 0) ? 0 : 1;
        int dnArrow = (m_currRow == m_lastRow) ? 0 : 1;

        container->Draw(&p, 0, upArrow);
        container->Draw(&p, 1, dnArrow);
    }

    int bw  = m_backRegPix.width();
    int bh  = m_backRegPix.height();
    int bw2 = m_backRegPix.width()/2;
    int bh2 = m_backRegPix.height()/2;
    int sw  = (int)(7*wmult);
    int sh  = (int)(7*hmult);

    int curPos = m_topRow*m_nCols;

    for (int y = 0; y < m_nRows; y++)
    {
        int ypos = m_spaceH * (y + 1) + m_thumbH * y;

        for (int x = 0; x < m_nCols; x++)
        {
            if (curPos >= (int)m_itemList.count())
                continue;

            ThumbItem *item = m_itemList.at(curPos);
            if (!item->GetPixmap())
                LoadThumbnail(item);

            int xpos = m_spaceW * (x + 1) + m_thumbW * x;

            if (item->IsDir())
            {
                if (curPos == (m_currRow*m_nCols+m_currCol))
                    p.drawPixmap(xpos, ypos, m_folderSelPix);
                else
                    p.drawPixmap(xpos, ypos, m_folderRegPix);

                if (item->GetPixmap())
                {
                    p.drawPixmap(xpos + sw, ypos + sh + (int)(15 * hmult),
                                 *item->GetPixmap(),
                                 item->GetPixmap()->width() / 2 - bw2 + sw,
                                 item->GetPixmap()->height() / 2 - bh2 + sh,
                                 bw - 2 * sw, bh - 2 * sh - (int)(15 * hmult));
                }

                if (m_itemMarked.contains(item->GetPath()))
                    p.drawPixmap(xpos, ypos, m_MrkPix);

            }
            else
            {
                if (curPos == (m_currRow*m_nCols+m_currCol))
                    p.drawPixmap(xpos, ypos, m_backSelPix);
                else
                    p.drawPixmap(xpos, ypos, m_backRegPix);

                if (item->GetPixmap())
                {
                    p.drawPixmap(xpos + sw, ypos + sh,
                                 *item->GetPixmap(),
                                 item->GetPixmap()->width() / 2 - bw2 + sw,
                                 item->GetPixmap()->height() / 2 - bh2 + sh,
                                 bw - 2 * sw, bh - 2 * sh);
                }

                if (m_itemMarked.contains(item->GetPath()))
                    p.drawPixmap(xpos, ypos, m_MrkPix);
            }

            curPos++;
        }
    }

    p.end();

    bitBlt(this, m_viewRect.left(), m_viewRect.top(),
           &pix, 0, 0, -1, -1, Qt::CopyROP);
}

static bool has_action(QString action, const QStringList &actions)
{
    QStringList::const_iterator it;
    for (it = actions.begin(); it != actions.end(); ++it)
    {
        if (action == *it)
            return true;
    }
    return false;
}

void IconView::keyPressEvent(QKeyEvent *e)
{
    if (!e) return;

    bool handled = false;
    bool menuHandled = false;

    QStringList actions;
    gContext->GetMainWindow()->TranslateKeyPress("Gallery", e, actions);

    for (uint i = 0; i < actions.size() && !handled && !menuHandled; i++)
    {
        QString action = actions[i];
        if (action == "MENU")
        {
            m_inMenu = !m_inMenu;
            m_menuType->SetActive(m_inMenu & !m_inSubMenu);
            m_submenuType->SetActive(m_inMenu & m_inSubMenu);
            menuHandled = true;
        }
        else if (action == "ESCAPE")
        {
            if (!m_parent->IsExitingToMain())
            {
                if (m_inMenu & m_inSubMenu)
                {
                    HandleMainMenu();
                    m_menuType->SetActive(m_inMenu & !m_inSubMenu);
                    m_submenuType->SetActive(m_inMenu & m_inSubMenu);
                    menuHandled = true;
                }
            }
        }
        else if (action == "UP")
        {
            if (m_inMenu & !m_inSubMenu)
            {
                m_menuType->MoveUp();
                menuHandled = true;
            }
            else if (m_inMenu & m_inSubMenu)
            {
                m_submenuType->MoveUp();
                menuHandled = true;
            }
            else
            {
                handled = MoveUp();
            }
        }
        else if (action == "DOWN")
        {
            if (m_inMenu & !m_inSubMenu)
            {
                m_menuType->MoveDown();
                menuHandled = true;
            }
            else if (m_inMenu & m_inSubMenu)
            {
                m_submenuType->MoveDown();
                menuHandled = true;
            }
            else
            {
                handled = MoveDown();
            }
        }
        else if (action == "LEFT")
        {
            handled = MoveLeft();
        }
        else if (action == "RIGHT")
        {
            handled = MoveRight();
        }
        else if (action == "PAGEUP")
        {
            bool h = true;
            for (int i = 0; i < m_nRows && h; i++)
                h = MoveUp();
            handled = true;
        }
        else if (action == "PAGEDOWN")
        {
            bool h = true;
            for (int i = 0; i < m_nRows && h; i++)
                h = MoveDown();
            handled = true;
        }
        else if (action == "HOME")
        {
            m_topRow = m_currRow = m_currCol = 0;
            handled = true;
        }
        else if (action == "END")
        {
            m_currRow = m_lastRow;
            m_currCol = m_lastCol;
            m_topRow  = QMAX(m_currRow-(m_nRows-1),0);
            handled = true;
        }
        else if (action == "ROTRIGHT")
        {
            HandleRotateCW();
            handled = true;
        }
        else if (action == "ROTLEFT")
        {
            HandleRotateCCW();
            handled = true;
        }
        else if (action == "DELETE")
        {
            HandleDelete();
            handled = true;
        }
        else if (action == "MARK")
        {
            int pos = m_currRow * m_nCols + m_currCol;
            ThumbItem *item = m_itemList.at(pos);
            if (!item)
            {
                VERBOSE(VB_IMPORTANT, LOC_ERR + "The impossible happened");
                break;
            }

            if (!m_itemMarked.contains(item->GetPath()))
                m_itemMarked.append(item->GetPath());
            else
                m_itemMarked.remove(item->GetPath());

            handled = true;
        }
        else if (m_inMenu && (action == "SELECT" || action == "PLAY"))
        {
            HandleMenuButtonPress();
            menuHandled = true;
        }
        else if (action == "SELECT" || action == "PLAY" ||
                 action == "SLIDESHOW" || action == "RANDOMSHOW")
        {
            handled = HandleItemSelect(action);
        }
    }

    if (!handled && !menuHandled)
    {
        gContext->GetMainWindow()->TranslateKeyPress("Global", e, actions);
        if (has_action("ESCAPE", actions) && !m_parent->IsExitingToMain())
            handled = HandleEscape();
    }

    if (handled || menuHandled)
        update();
    else
        MythDialog::keyPressEvent(e);
}

bool IconView::HandleItemSelect(const QString &action)
{
    bool handled = false;

    int pos = m_currRow * m_nCols + m_currCol;
    ThumbItem *item = m_itemList.at(pos);
    if (!item)
    {
        VERBOSE(VB_IMPORTANT, LOC_ERR + "Item not found at " +
                QString("%1,%2").arg(m_currRow).arg(m_currCol));
        return handled;
    }

    QFileInfo fi(item->GetPath());

    if (action == "SELECT" || action == "PLAY")
    {
        // if the selected item is a Media Device
        // attempt to mount it if it isn't already
        if (item->GetMediaDevice())
            handled = HandleMediaDeviceSelect(item);

        if (!handled && item->IsDir())
        {
            LoadDirectory(item->GetPath(), true);
            handled = true;
        }
    }

    if (!handled)
        handled = HandleImageSelect(action);

    return handled;
}

bool IconView::HandleMediaDeviceSelect(ThumbItem *item)
{
    MediaMonitor *mon = MediaMonitor::GetMediaMonitor();
    if (mon && mon->ValidateAndLock(item->GetMediaDevice()))
    {
        m_currDevice = item->GetMediaDevice();

        if (!m_currDevice->isMounted())
            m_currDevice->mount();

        item->SetPath(m_currDevice->getMountPath(), true);

        connect(m_currDevice,
                SIGNAL(statusChanged(MediaStatus,
                                     MythMediaDevice*)),
                SLOT(mediaStatusChanged(MediaStatus,
                                        MythMediaDevice*)));

        LoadDirectory(m_currDevice->getMountPath(), true);

        mon->Unlock(m_currDevice);
    }
    else
    {
        // device was removed
        MythPopupBox::showOkPopup(
            gContext->GetMainWindow(),
            tr("Error"),
            tr("The selected device is no longer available"));

        HandleShowDevices();
        m_currRow = 0;
        m_currCol = 0;
    }

    return true;
}

void IconView::HandleSlideShow(void)
{
    HandleImageSelect("SLIDESHOW");
}

void IconView::HandleRandomShow(void)
{
    HandleImageSelect("RANDOMSHOW");
}

bool IconView::HandleImageSelect(const QString &action)
{
    int pos = m_currRow * m_nCols + m_currCol;
    ThumbItem *item = m_itemList.at(pos);
    if (!item || (item->IsDir() && !m_recurse))
        return false;

    int slideShow = ((action == "PLAY" || action == "SLIDESHOW") ? 1 : 
                     (action == "RANDOMSHOW") ? 2 : 0);

#ifdef USING_OPENGL
    if (m_useOpenGL)
    {
        if (QGLFormat::hasOpenGL())
        {
            GLSDialog gv(m_itemList, pos,
                         slideShow, m_sortorder,
                         gContext->GetMainWindow());
            gv.exec();
        }
        else
        {
            MythPopupBox::showOkPopup(
                gContext->GetMainWindow(),
                tr("Error"),
                tr("Sorry: OpenGL support not available"));
        }
    }
    else
#endif
    {
        SingleView sv(m_itemList, pos, slideShow, m_sortorder,
                      gContext->GetMainWindow());
        sv.exec();
    }

    // if the user deleted files while in single view mode
    // the cached contents of the directory will be out of
    // sync, reload the current directory to refresh the view
    LoadDirectory(m_currDir, true);

    // reselect current item... or next item if deleted,
    // or failing that select last item.
    pos = min((uint)pos, m_itemList.count());
    m_currRow = pos / m_nCols;
    m_currCol = pos - (m_currRow * m_nCols);
    m_topRow  = max(0, m_currRow + 1 - m_nRows);

    return true;
}

bool IconView::HandleMediaEscape(MediaMonitor *mon)
{
    //VERBOSE(VB_IMPORTANT, LOC + "HandleMediaEscape("<<mon<<")");

    bool handled = false;
    QDir curdir(m_currDir);
    QValueList<MythMediaDevice*> removables = mon->GetMedias(MEDIATYPE_DATA);
    QValueList<MythMediaDevice*>::iterator it = removables.begin();
    for (; !handled && (it != removables.end()); it++)
    {
        if (!mon->ValidateAndLock(*it))
            continue;

        if (curdir == QDir((*it)->getMountPath()))
        {
            HandleShowDevices();

            // Make sure previous devices are visible and selected
            ThumbItem *item = NULL;
            if (!(*it)->getVolumeID().isEmpty())
                item = m_itemDict.find((*it)->getVolumeID());
            else
                item = m_itemDict.find((*it)->getDevicePath());

            if (item)
            {
                int pos = m_itemList.find(item);
                if (pos != -1)
                {
                    m_currRow = pos / m_nCols;
                    m_currCol = pos - (m_currRow * m_nCols);
                    m_topRow  = max(0, m_currRow + 1 - m_nRows);
                }
            }

            handled = true;
        }
        else
        {
            handled = HandleSubDirEscape((*it)->getMountPath());
        }

        mon->Unlock(*it);
    }

    //VERBOSE(VB_IMPORTANT, LOC + "HandleMediaEscape() handled: "<<handled);

    return handled;
}

static bool is_subdir(const QDir &parent, const QDir &subdir)
{
    QString pstr = parent.canonicalPath();
    QString cstr = subdir.canonicalPath();
    bool ret = !cstr.find(pstr);
    //VERBOSE(VB_IMPORTANT, QString("is_subdir(%1,%2) -> %3")
    //        .arg(pstr).arg(cstr).arg(ret));
    return ret;
}

bool IconView::HandleSubDirEscape(const QString &parent)
{
    bool handled = false;

    QDir curdir(m_currDir);
    QDir pdir(parent);
    if ((curdir != pdir) && is_subdir(pdir, curdir))
    {
        QString oldDirName = curdir.dirName();
        curdir.cdUp();
        LoadDirectory(curdir.absPath(), true);

        // Make sure up-directory is visible and selected
        ThumbItem *item = m_itemDict.find(oldDirName);
        if (item)
        {
            int pos = m_itemList.find(item);
            if (pos != -1)
            {
                m_currRow = pos / m_nCols;
                m_currCol = pos - (m_currRow * m_nCols);
                m_topRow  = max(0, m_currRow + 1 - m_nRows);
            }
        }

        handled = true;
    }

    return handled;
}

bool IconView::HandleEscape(void)
{
    //VERBOSE(VB_IMPORTANT, LOC + "HandleEscape() " +
    //        QString("showDevices: %1").arg(m_showDevices));

    bool handled = false;

    // If we are showing the attached devices, ESCAPE should always exit..
    if (m_showDevices)
    {
        //VERBOSE(VB_IMPORTANT, LOC + "HandleEscape() exiting on showDevices");
        return false;
    }

    // If we are viewing an attached device we should show the attached devices
    MediaMonitor *mon = MediaMonitor::GetMediaMonitor();
    if (mon && m_currDevice)
        handled = HandleMediaEscape(mon);

    // If we are viewing a subdirectory of the gallery directory, we should
    // move up the directory tree, otherwise ESCAPE should exit..
    if (!handled)
        handled = HandleSubDirEscape(m_galleryDir);

    //VERBOSE(VB_IMPORTANT, LOC + "HandleEscape() handled: "<<handled<<"\n");

    return handled;
}

void IconView::customEvent(QCustomEvent *e)
{
    if (!e || (e->type() != QEvent::User))
        return;

    ThumbData *td = (ThumbData*) (e->data());
    if (!td) return;

    ThumbItem *item = m_itemDict.find(td->fileName);
    if (item)
    {
        item->SetPixmap(NULL);

        int rotateAngle = item->GetRotationAngle();

        if (rotateAngle)
        {
            QWMatrix matrix;
            matrix.rotate(rotateAngle);
            td->thumb = td->thumb.xForm(matrix);
        }


        int pos = m_itemList.find(item);

        if ((m_topRow*m_nCols <= pos) &&
            (pos <= (m_topRow*m_nCols + m_nRows*m_nCols)))
            update(m_viewRect);

    }
    delete td;

}

bool IconView::LoadTheme(void)
{
    m_theme = new XMLParse();
    m_theme->SetWMult(wmult);
    m_theme->SetHMult(hmult);

    QDomElement xmldata;
    m_theme->LoadTheme(xmldata, "gallery", "gallery-");

    for (QDomNode child = xmldata.firstChild(); !child.isNull();
         child = child.nextSibling())
    {
        QDomElement e = child.toElement();
        if (!e.isNull())
        {
            if (e.tagName() == "font")
            {
                m_theme->parseFont(e);
            }
            else if (e.tagName() == "container")
            {
                QRect area;
                QString name;
                int context;
                m_theme->parseContainer(e, name, context, area);

                if (name.lower() == "menu")
                    m_menuRect = area;
                else if (name.lower() == "text")
                    m_textRect = area;
                else if (name.lower() == "view")
                    m_viewRect = area;
            }
            else
            {
                VERBOSE(VB_IMPORTANT, LOC_ERR +
                        "Unknown element: " << e.tagName());
                return false;
            }
        }
    }

    return LoadMenuTheme() && LoadViewTheme() && LoadThemeImages();
}

static UIListBtnType* get_button(LayerSet *container, const QString &name)
{
    UIListBtnType *btn = (UIListBtnType*) container->GetType(name);
    if (!btn)
    {
        VERBOSE(VB_IMPORTANT, LOC_ERR +
                QString("Failed to get %1 area.").arg(name));
    }
    return btn;
}

bool IconView::LoadMenuTheme(void)
{
    LayerSet *container = m_theme->GetSet("menu");
    if (!container)
    {
        VERBOSE(VB_IMPORTANT, LOC_ERR + "Failed to get menu container.");
        return false;
    }

    m_menuType    = get_button(container, "menu");
    m_submenuType = get_button(container, "submenu");
    if (!m_menuType || !m_submenuType)
        return false;

    // Set Menu Text and Handlers
    UIListBtnTypeItem *item;
    item = new UIListBtnTypeItem(m_menuType, tr("SlideShow"));
    item->setData(new MenuAction(&IconView::HandleSlideShow));
    item = new UIListBtnTypeItem(m_menuType, tr("Random"));
    item->setData(new MenuAction(&IconView::HandleRandomShow));
    item = new UIListBtnTypeItem(m_menuType, tr("Meta Data..."));
    item->setData(new MenuAction(&IconView::HandleSubMenuMetadata));
    item = new UIListBtnTypeItem(m_menuType, tr("Marking..."));
    item->setData(new MenuAction(&IconView::HandleSubMenuMark));
    item = new UIListBtnTypeItem(m_menuType, tr("File..."));
    item->setData(new MenuAction(&IconView::HandleSubMenuFile));
    item = new UIListBtnTypeItem(m_menuType, tr("Settings"));
    item->setData(new MenuAction(&IconView::HandleSettings));

    // The menu is initially not active
    m_menuType->SetActive(false);

    return true;
}

bool IconView::LoadViewTheme(void)
{
    LayerSet *container = m_theme->GetSet("view");
    if (!container)
    {
        VERBOSE(VB_IMPORTANT, LOC_ERR + "Failed to get view container.");
        return false;
    }

    UIBlackHoleType *bhType = (UIBlackHoleType*) container->GetType("view");
    if (!bhType)
    {
        VERBOSE(VB_IMPORTANT, LOC_ERR + "Failed to get view area.");
        return false;
    }

    m_iconRect = bhType->getScreenArea();

    return true;
}

bool load_pixmap(const QString &name, QPixmap &dest)
{
    QImage *img = gContext->LoadScaleImage(name);
    if (img)
    {
        dest = QPixmap(*img);
        delete img;

        return true;
    }

    VERBOSE(VB_IMPORTANT, LOC_ERR + QString("Failed to load '%1'").arg(name));
    return false;
}

bool IconView::LoadThemeImages(void)
{
    bool ok = true;
    ok &= load_pixmap("gallery-back-reg.png",   m_backRegPix);
    ok &= load_pixmap("gallery-back-sel.png",   m_backSelPix);
    ok &= load_pixmap("gallery-folder-reg.png", m_folderRegPix);
    ok &= load_pixmap("gallery-folder-sel.png", m_folderSelPix);
    ok &= load_pixmap("gallery-mark.png",       m_MrkPix);

    if (ok)
    {
        m_thumbW = m_backRegPix.width();
        m_thumbH = m_backRegPix.height();
        m_nCols  = m_iconRect.width()  / m_thumbW;
        m_nRows  = m_iconRect.height() / m_thumbH;
        m_spaceW = (m_iconRect.width()-(m_nCols*m_thumbW)) / (m_nCols + 1);
        m_spaceH = (m_iconRect.height()-(m_nRows*m_thumbH)) / (m_nRows + 1);

        m_thumbGen->setSize((int)(m_thumbW - 10 * wmult), 
                            (int)(m_thumbH - 10 * hmult));
    }

    return ok;
}

void IconView::LoadDirectory(const QString &dir, bool topleft)
{
    QDir d(dir);
    if (!d.exists())
    {
        VERBOSE(VB_IMPORTANT, LOC_ERR + "LoadDirectory called with " +
                QString("non-existant directory: '%1'").arg(dir));
        return;
    }

    m_showDevices = false;

    m_currDir = d.absPath();
    m_itemList.clear();
    m_itemDict.clear();

    m_isGallery = GalleryUtil::LoadDirectory(m_itemList, dir, m_sortorder,
                                             false, &m_itemDict, m_thumbGen);

    m_lastRow = max((int)ceilf((float)m_itemList.count() /
                                (float)m_nCols) - 1, 0);
    m_lastCol = max(m_itemList.count() - m_lastRow * m_nCols - 1, (uint)0);

    if (topleft)
    {
        m_currRow = 0;
        m_currCol = 0;
        m_topRow  = 0;
    }
    else
    {
        uint currIndx = m_currRow * m_nCols + m_currCol;
        uint lastIndx = m_itemList.count() - 1;
        if (currIndx > lastIndx)
        {
            m_currRow = lastIndx / m_nCols;
            m_currCol = lastIndx % m_nCols;
            m_topRow  = min(m_topRow, m_currRow);
        }
    }
}

void IconView::LoadThumbnail(ThumbItem *item)
{
    if (!item)
        return;

    bool canLoadGallery = m_isGallery;
    QImage image;

    if (canLoadGallery)
    {
        if (item->IsDir())
        {
            // try to find a highlight
            QDir subdir(item->GetPath(), "*.highlight.*",
                        QDir::Name, QDir::Files);

            if (subdir.count() > 0)
            {
                // check if the image format is understood
                QString path =
                    subdir.entryInfoList()->getFirst()->absFilePath();
                image.load(path);
            }
        }
        else
        {
            QString fn = item->GetName();
            int firstDot = fn.find('.');
            if (firstDot > 0)
            {
                fn.insert(firstDot, ".thumb");
                QString galThumbPath(m_currDir + "/" + fn);
                image.load(galThumbPath);
            }
        }

        canLoadGallery = !(image.isNull());
    }

    if (!canLoadGallery)
    {
        QString cachePath =
            m_thumbGen->getThumbcacheDir(m_currDir) + item->GetName();

        image.load(cachePath);
    }

    if (!image.isNull())
    {
        int rotateAngle = 0;

        rotateAngle = item->GetRotationAngle();

        if (rotateAngle != 0)
        {
            QWMatrix matrix;
            matrix.rotate(rotateAngle);
            image = image.xForm(matrix);
        }

        item->SetPixmap(new QPixmap(image));
    }
}

bool IconView::MoveUp(void)
{
    if (m_currRow == 0)
        return false;

    m_currRow--;
    m_topRow = min(m_currRow, m_topRow);

    return true;
}

bool IconView::MoveDown(void)
{
    if (m_currRow == m_lastRow)
        return false;

    m_currRow++;
    if (m_currRow >= m_topRow + m_nRows)
        m_topRow++;

    if (m_currRow == m_lastRow)
        m_currCol = min(m_currCol, m_lastCol);

    return true;
}

bool IconView::MoveLeft(void)
{
    if (m_currRow == 0 && m_currCol == 0)
        return false;

    m_currCol--;
    if (m_currCol < 0)
    {
        m_currCol = m_nCols - 1;
        m_currRow--;
        if (m_currRow < m_topRow)
            m_topRow = m_currRow;
    }

    return true;
}

bool IconView::MoveRight(void)
{
    if (m_currRow * m_nCols + m_currCol >= (int)m_itemList.count() - 1)
        return false;

    m_currCol++;
    if (m_currCol >= m_nCols)
    {
        m_currCol = 0;
        m_currRow++;
        if (m_currRow >= m_topRow+m_nRows)
            m_topRow++;
    }

    return true;
}

void IconView::HandleMenuButtonPress(void)
{
    UIListBtnTypeItem *item;

    if (m_inSubMenu)
        item = m_submenuType->GetItemCurrent();
    else
        item = m_menuType->GetItemCurrent();

    if (!item || !item->getData())
        return;

    MenuAction *act = (MenuAction*) item->getData();
    (this->*(*act))();

    m_menuType->SetActive(m_inMenu & !m_inSubMenu);
    m_submenuType->SetActive(m_inMenu & m_inSubMenu);
}

void IconView::HandleMainMenu(void)
{
    if (m_showDevices)
    {
        QDir d(m_currDir);
        if (!d.exists())
            m_currDir = m_galleryDir;

        LoadDirectory(m_currDir, true);
        m_showDevices = false;
    }

    ClearMenu(m_submenuType);
    m_submenuType->Reset();

    m_inSubMenu = false;
}

void IconView::HandleSubMenuMetadata(void)
{
    ClearMenu(m_submenuType);
    m_submenuType->Reset();

    UIListBtnTypeItem *item;
    item = new UIListBtnTypeItem(m_submenuType, tr("Return"));
    item->setData(new MenuAction(&IconView::HandleMainMenu));

    item = new UIListBtnTypeItem(m_submenuType, tr("Rotate CW"));
    item->setData(new MenuAction(&IconView::HandleRotateCW));

    item = new UIListBtnTypeItem(m_submenuType, tr("Rotate CCW"));
    item->setData(new MenuAction(&IconView::HandleRotateCCW));

    m_inSubMenu = true;
}

void IconView::HandleSubMenuMark(void)
{
    ClearMenu(m_submenuType);
    m_submenuType->Reset();

    UIListBtnTypeItem *item;
    item = new UIListBtnTypeItem(m_submenuType, tr("Return"));
    item->setData(new MenuAction(&IconView::HandleMainMenu));

    item = new UIListBtnTypeItem(m_submenuType, tr("Clear Marked"));
    item->setData(new MenuAction(&IconView::HandleClearMarked));

    item = new UIListBtnTypeItem(m_submenuType, tr("Select All"));
    item->setData(new MenuAction(&IconView::HandleSelectAll));

    m_inSubMenu = true;
}

void IconView::HandleSubMenuFile(void)
{
    ClearMenu(m_submenuType);
    m_submenuType->Reset();

    UIListBtnTypeItem *item;
    item = new UIListBtnTypeItem(m_submenuType, tr("Return"));
    item->setData(new MenuAction(&IconView::HandleMainMenu));

    item = new UIListBtnTypeItem(m_submenuType, tr("Show Devices"));
    item->setData(new MenuAction(&IconView::HandleShowDevices));

    item = new UIListBtnTypeItem(m_submenuType, tr("Eject"));
    item->setData(new MenuAction(&IconView::HandleEject));

    item = new UIListBtnTypeItem(m_submenuType, tr("Import"));
    item->setData(new MenuAction(&IconView::HandleImport));

    item = new UIListBtnTypeItem(m_submenuType, tr("Copy here"));
    item->setData(new MenuAction(&IconView::HandleCopyHere));

    item = new UIListBtnTypeItem(m_submenuType, tr("Move here"));
    item->setData(new MenuAction(&IconView::HandleMoveHere));

    item = new UIListBtnTypeItem(m_submenuType, tr("Delete"));
    item->setData(new MenuAction(&IconView::HandleDelete));

    item = new UIListBtnTypeItem(m_submenuType, tr("Create Dir"));
    item->setData(new MenuAction(&IconView::HandleMkDir));

    item = new UIListBtnTypeItem(m_submenuType, tr("Rename"));
    item->setData(new MenuAction(&IconView::HandleRename));

    m_inSubMenu = true;
}

void IconView::HandleRotateCW(void)
{
    ThumbItem *item = m_itemList.at(m_currRow * m_nCols + m_currCol);
    if (!item || item->IsDir())
        return;

    int rotAngle = item->GetRotationAngle();

    rotAngle += 90;

    if (rotAngle >= 360)
        rotAngle -= 360;

    if (rotAngle < 0)
        rotAngle += 360;

    item->SetRotationAngle(rotAngle);
}

void IconView::HandleRotateCCW(void)
{
    ThumbItem *item = m_itemList.at(m_currRow * m_nCols + m_currCol);
    if (!item || item->IsDir())
        return;

    int rotAngle = item->GetRotationAngle();

    rotAngle -= 90;

    if (rotAngle >= 360)
        rotAngle -= 360;

    if (rotAngle < 0)
        rotAngle += 360;

    item->SetRotationAngle(rotAngle);
}

void IconView::HandleDeleteCurrent(void)
{
    ThumbItem *item = m_itemList.at(m_currRow * m_nCols + m_currCol);

    if (!item)
        return;

    QString title = tr("Delete Current File or Folder");
    QString msg = (item->IsDir()) ?
        tr("Deleting 1 folder, including any subfolders and files.") :
        tr("Deleting 1 image.");

    bool cont = MythPopupBox::showOkCancelPopup(
        gContext->GetMainWindow(), title, msg, false);

    if (cont)
    {
        QFileInfo fi;
        fi.setFile(item->GetPath());
        GalleryUtil::Delete(fi);

        LoadDirectory(m_currDir, true);
    }
}

void IconView::HandleSettings(void)
{
    GallerySettings settings;
    settings.exec();
    gContext->ClearSettingsCache();

    // reload settings
    m_showcaption = gContext->GetNumSetting("GalleryOverlayCaption", 0);
    m_sortorder   = gContext->GetNumSetting("GallerySortOrder", 0);
    m_useOpenGL   = gContext->GetNumSetting("SlideshowUseOpenGL", 0);
    m_recurse     = gContext->GetNumSetting("GalleryRecursiveSlideshow", 0);
    m_paths       = QStringList::split(
        ":", gContext->GetSetting("GalleryImportDirs"));

    // reload directory
    MediaMonitor *mon = MediaMonitor::GetMediaMonitor();
    if (m_currDevice && mon && mon->ValidateAndLock(m_currDevice))
    {
        LoadDirectory(m_currDevice->getMountPath(), true);
        mon->Unlock(m_currDevice);
    }
    else
    {
        m_currDevice = NULL;
        LoadDirectory(m_galleryDir, true);
    }
}

void IconView::HandleEject(void)
{
    myth_eject();
}

void IconView::HandleImport(void)
{
    QFileInfo path;
    QDir importdir;

    DialogBox *importDlg = new DialogBox(
        gContext->GetMainWindow(), tr("Import pictures?"));

    importDlg->AddButton(tr("No"));
    importDlg->AddButton(tr("Yes"));
    DialogCode code = importDlg->exec();
    importDlg->deleteLater();
    if (kDialogCodeButton1 != code)
        return;

    // Makes import directory samba/windows friendly (no colon)
    QString idirname = m_currDir + "/" +
        QDateTime::currentDateTime().toString("yyyy-MM-dd_hh-mm-ss");

    importdir.mkdir(idirname);
    importdir.setPath(idirname);

    for (QStringList::const_iterator it = m_paths.begin();
         it != m_paths.end(); ++it)
    {
        path.setFile(*it);
        if (path.isDir() && path.isReadable())
        {
            ImportFromDir(*it, importdir.absPath());
        }
        else if (path.isFile() && path.isExecutable())
        {
            // TODO this should not be enabled by default!!!
            QString cmd = *it + " " + importdir.absPath();
            VERBOSE(VB_GENERAL, LOC + QString("Executing %1").arg(cmd));
            myth_system(cmd);
        }
        else
        {
            VERBOSE(VB_IMPORTANT, LOC_ERR +
                    QString("Could not read or execute %1").arg(*it));
        }
    }

#if QT_VERSION >= 0x030100
    importdir.refresh();
    if (importdir.count() == 0)
#endif
        // (QT < 3.1) rely on automatic fail if dir not empty
        if (importdir.rmdir(importdir.absPath()))
        {
            DialogBox *nopicsDlg = new DialogBox(
                gContext->GetMainWindow(), tr("Nothing found to import"));

            nopicsDlg->AddButton(tr("OK"));
            nopicsDlg->exec();
            nopicsDlg->deleteLater();

            return;
        }

    ThumbItem *item = new ThumbItem(importdir.dirName(),
                                    importdir.absPath(), true);
    m_itemList.append(item);
    m_itemDict.insert(item->GetName(), item);
    m_thumbGen->addFile(item->GetName());

    if (!m_thumbGen->running())
    {
        m_thumbGen->start();
    }
}

void IconView::HandleShowDevices(void)
{
#ifndef _WIN32
    MediaMonitor *mon = MediaMonitor::GetMediaMonitor();
    if (m_currDevice && mon && mon->ValidateAndLock(m_currDevice))
    {
        m_currDevice->disconnect(this);
        mon->Unlock(m_currDevice);
    }
    else
        m_currDir = m_galleryDir;
#endif

    m_currDevice = NULL;

    m_showDevices = true;

    m_itemList.clear();
    m_itemDict.clear();

    m_thumbGen->cancel();

    // add gallery directory
    ThumbItem *item = new ThumbItem("Gallery", m_galleryDir, true);
    m_itemList.append(item);
    m_itemDict.insert(item->GetName(), item);

#ifndef _WIN32
    if (mon)
    {
        QValueList<MythMediaDevice*> removables =
            mon->GetMedias(MEDIATYPE_DATA);
        QValueList<MythMediaDevice*>::Iterator it = removables.begin();
        for (; it != removables.end(); it++)
        {
            if (mon->ValidateAndLock(*it))
            {
                item = new ThumbItem(
                    (*it)->getVolumeID().isEmpty() ?
                    (*it)->getDevicePath() : (*it)->getVolumeID(),
                    (*it)->getMountPath(), true, *it);

                m_itemList.append(item);
                m_itemDict.insert(item->GetName(), item);

                mon->Unlock(*it);
            }
        }
    }
#endif

    m_lastRow = QMAX((int)ceilf((float)m_itemList.count()/(float)m_nCols)-1,0);
    m_lastCol = QMAX(m_itemList.count()-m_lastRow*m_nCols-1,0);

    // exit from menu on show devices action..
    m_inMenu = false;
    update();
}

void IconView::HandleCopyHere(void)
{
    CopyMarkedFiles(false);
    HandleClearMarked();
}

void IconView::HandleMoveHere(void)
{
    CopyMarkedFiles(true);
    HandleClearMarked();
}

void IconView::HandleDelete(void)
{
    if (m_itemMarked.isEmpty())
        HandleDeleteCurrent();
    else
        HandleDeleteMarked();
}

void IconView::HandleDeleteMarked(void)
{
    bool cont = MythPopupBox::showOkCancelPopup(gContext->GetMainWindow(),
                    tr("Delete Marked Files"),
                    QString(tr("Deleting %1 images and folders, including "
                               "any subfolders and files."))
                            .arg(m_itemMarked.count()),
                    false);

    if (cont)
    {
        QStringList::iterator it;
        QFileInfo fi;

        for (it = m_itemMarked.begin(); it != m_itemMarked.end(); it++)
        {
            fi.setFile(*it);

            GalleryUtil::Delete(fi);
        }

        m_itemMarked.clear();

        LoadDirectory(m_currDir, true);
    }
}

void IconView::HandleClearMarked(void)
{
    m_itemMarked.clear();
}

void IconView::HandleSelectAll(void)
{
    ThumbItem *item;
    for (item = m_itemList.first(); item; item = m_itemList.next())
    {
        if (!m_itemMarked.contains(item->GetPath()))
            m_itemMarked.append(item->GetPath());
    }
}

void IconView::HandleMkDir(void)
{
    QString folderName = tr("New Folder");

    bool res = MythPopupBox::showGetTextPopup(
        gContext->GetMainWindow(), tr("Create New Folder"),
        tr("Create New Folder"), folderName);

    if (res)
    {
        QDir cdir(m_currDir);
        cdir.mkdir(folderName);

        LoadDirectory(m_currDir, true);
    }
}


void IconView::HandleRename(void)
{
    ThumbItem *item = m_itemList.at(m_currRow * m_nCols + m_currCol);

    if (!item)
        return;

    QString folderName = item->GetName();

    bool res = MythPopupBox::showGetTextPopup(
        gContext->GetMainWindow(), tr("Rename"),
        tr("Rename"), folderName);

    if (folderName.isEmpty() || folderName == "." || folderName == "..")
        return;

    if (res)
    {
        if (!GalleryUtil::Rename(m_currDir, item->GetName(), folderName))
        {
            QString msg;
            if (item->IsDir())
                msg = tr("Failed to rename directory");
            else
                msg = tr("Failed to rename file");

            DialogBox *dlg = new DialogBox(gContext->GetMainWindow(), msg);
            dlg->AddButton(tr("OK"));
            dlg->exec();
            dlg->deleteLater();

            return;
        }

        LoadDirectory(m_currDir, true);
    }
}



void IconView::ImportFromDir(const QString &fromDir, const QString &toDir)
{
    QDir d(fromDir);

    if (!d.exists())
        return;

    d.setNameFilter(MEDIA_FILENAMES);
    d.setSorting(m_sortorder);
    d.setFilter(QDir::Files | QDir::Dirs | QDir::NoSymLinks  | QDir::Readable);
    d.setMatchAllDirs(true);
    const QFileInfoList *list = d.entryInfoList();
    if (!list)
        return;
    QFileInfoListIterator it(*list);
    QFileInfo *fi;

    while ((fi = it.current()) != 0)
    {
        ++it;
        if (fi->fileName() == "." || fi->fileName() == "..")
            continue;

        if (fi->isDir())
        {
            QString newdir(toDir + "/" + fi->fileName());
            d.mkdir(newdir);
            ImportFromDir(fi->absFilePath(), newdir);
        }
        else
        {
            VERBOSE(VB_GENERAL, LOC + QString("Copying %1 to %2")
                    .arg(fi->absFilePath().local8Bit())
                    .arg(toDir.local8Bit()));

            // TODO FIXME, we shouldn't need a myth_system call here
            QString cmd = "cp \"" + fi->absFilePath().local8Bit() +
                          "\" \"" + toDir.local8Bit() + "\"";

            myth_system(cmd);
        }
    }
}

void IconView::CopyMarkedFiles(bool move)
{
    if (m_itemMarked.isEmpty())
        return;

    QStringList::iterator it;
    QFileInfo fi;
    QFileInfo dest;
    int count = 0;

    QString msg = (move) ?
        tr("Moving marked images...") : tr("Copying marked images...");

    MythProgressDialog *progress =
        new MythProgressDialog(msg, m_itemMarked.count());

    for (it = m_itemMarked.begin(); it != m_itemMarked.end(); it++)
    {
        fi.setFile(*it);
        dest.setFile(QDir(m_currDir), fi.fileName());

        if (fi.exists())
            GalleryUtil::CopyMove(fi, dest, move);

        progress->setProgress(++count);
    }

    progress->Close();
    progress->deleteLater();

    LoadDirectory(m_currDir, true);
}

void IconView::ClearMenu(UIListBtnType *menu)
{
    if (!menu)
        return;

    UIListBtnTypeItem *item = menu->GetItemFirst();
    while (item)
    {
        MenuAction *act = (MenuAction*) item->getData();
        if (act)
            delete act;
        item = menu->GetItemNext(item);
    }
}

void IconView::mediaStatusChanged(MediaStatus oldStatus,
                                  MythMediaDevice *pMedia)
{
    (void) oldStatus;
    if (m_currDevice == pMedia)
    {
        HandleShowDevices();

        m_currRow = 0;
        m_currCol = 0;

        UpdateView();
        UpdateText();
    }
}

---