mirror of
git://git.savannah.nongnu.org/eliot.git
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336 lines
8.6 KiB
C++
336 lines
8.6 KiB
C++
/*****************************************************************************
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* Eliot
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* Copyright (C) 2012 Olivier Teulière
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* Authors: Olivier Teulière <ipkiss @@ gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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#include <algorithm>
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#include <QHBoxLayout>
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#include <QDrag>
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#include <QDragEnterEvent>
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#include <QDragLeaveEvent>
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#include <QDragMoveEvent>
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#include <QDropEvent>
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#include <QMimeData>
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#include "rack_widget.h"
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#include "tile_widget.h"
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#include "tile_layout.h"
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#include "play_model.h"
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#include "qtcommon.h"
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#include "public_game.h"
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#include "pldrack.h"
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#include "debug.h"
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using namespace std;
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INIT_LOGGER(qt, RackWidget);
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#define MIME_TYPE "text/x-tile"
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RackWidget::RackWidget(QWidget *parent)
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: QFrame(parent), m_game(NULL),
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m_playModel(NULL), m_showOnlyLastTurn(false),
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m_dragOrigin(-1)
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{
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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setFrameStyle(QFrame::Box | QFrame::Raised);
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TileLayout *layout = new TileLayout(1);
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layout->setSpacing(5);
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layout->setContentsMargins(3, 3, 3, 3);
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layout->setAlignment(Qt::AlignCenter);
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setLayout(layout);
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setAcceptDrops(true);
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}
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void RackWidget::setPlayModel(PlayModel *iPlayModel)
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{
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if (m_playModel != NULL)
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m_playModel->disconnect(this, SLOT(refresh()));
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if (iPlayModel != NULL)
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{
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QObject::connect(iPlayModel, SIGNAL(moveChanged(const Move &, const Move&)),
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this, SLOT(refresh()));
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}
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m_playModel = iPlayModel;
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}
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void RackWidget::setGame(const PublicGame *iGame)
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{
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m_game = iGame;
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if (m_game == NULL)
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{
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// Delete the widgets
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TileLayout *layout = (TileLayout*) this->layout();
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layout->clear();
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m_tilesVect.clear();
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}
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}
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void RackWidget::setRack(const PlayedRack &iRack)
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{
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ASSERT(m_game != NULL, "setRack() called without a game");
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if (m_showOnlyLastTurn && !m_game->isLastTurn())
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return;
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// Get the tiles
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vector<Tile> tiles;
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iRack.getAllTiles(tiles);
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// Update the rack
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setTiles(tiles);
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}
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void RackWidget::setTiles(const vector<Tile> &iTiles)
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{
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m_tiles = iTiles;
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refresh();
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}
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void RackWidget::refresh()
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{
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m_filteredTiles = filterRack(m_tiles);
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unsigned tilesCount = m_filteredTiles.size();
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// Make sure we have as many widgets as there are letters in the rack
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while (m_tilesVect.size() > tilesCount)
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{
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QtCommon::DestroyObject(m_tilesVect.back());
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m_tilesVect.pop_back();
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}
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while (m_tilesVect.size() < tilesCount)
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{
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TileWidget *tileWidget =
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new TileWidget(0, TileWidget::NONE, 0, m_tilesVect.size());
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QObject::connect(tileWidget, SIGNAL(mousePressed(int, int, QMouseEvent*)),
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this, SLOT(tilePressed(int, int, QMouseEvent*)));
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tileWidget->setBorder(2);
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layout()->addWidget(tileWidget);
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m_tilesVect.push_back(tileWidget);
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}
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ASSERT(m_tilesVect.size() == tilesCount, "Invalid number of tiles");
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// Update the widgets
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for (unsigned int i = 0; i < tilesCount; ++i)
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{
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TileWidget *tileWidget = m_tilesVect[i];
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tileWidget->tileChanged(TileWidget::NORMAL, m_filteredTiles[i]);
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}
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}
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vector<Tile> RackWidget::filterRack(const vector<Tile> &iTiles) const
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{
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if (m_playModel == NULL || !m_playModel->getMove().isValid())
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return iTiles;
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vector<Tile> result = iTiles;
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const Round &round = m_playModel->getMove().getRound();
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for (unsigned i = 0; i < round.getWordLen(); ++i)
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{
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if (round.isPlayedFromRack(i))
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{
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const Tile &t = round.getTile(i);
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vector<Tile>::iterator it =
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std::find(result.begin(), result.end(),
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t.isJoker() ? Tile::Joker() : t);
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if (it != result.end())
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result.erase(it);
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}
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}
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return result;
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}
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// Drag & drop handling
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bool RackWidget::canStartDragDrop() const
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{
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if (m_game == NULL || m_game->isFinished())
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return false;
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// Drag & drop is not allowed when a word is being played
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return m_tiles.size() == m_filteredTiles.size();
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}
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void RackWidget::tilePressed(int row, int col, QMouseEvent *event)
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{
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ASSERT(row == 0, "Multi-line racks are not supported");
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ASSERT(col >= 0 && (unsigned)col < m_tilesVect.size(),
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"Invalid tile index: " << col);
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if (!canStartDragDrop())
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return;
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LOG_DEBUG("Starting drag for tile " << col);
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TileWidget *tileWidget = m_tilesVect[col];
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// Save the initial column of the moved tile
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QMimeData *mimeData = new QMimeData;
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mimeData->setData(MIME_TYPE, QByteArray());
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m_dragOrigin = col;
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// Create an image of the tile
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QPixmap pixmap(tileWidget->size());
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tileWidget->render(&pixmap);
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// Initiate the drag
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QDrag *drag = new QDrag(this);
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drag->setMimeData(mimeData);
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drag->setHotSpot(event->pos());
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drag->setPixmap(pixmap);
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vector<Tile> tilesCopy = m_tiles;
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if (drag->exec(Qt::MoveAction) != Qt::MoveAction)
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{
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LOG_DEBUG("Drag & drop failed (drop out of the widget?). Canceling...");
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// Restore the rack as it was before the drag & drop
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setTiles(tilesCopy);
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}
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else
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{
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LOG_DEBUG("Drag & drop finished");
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}
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}
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void RackWidget::dragEnterEvent(QDragEnterEvent *event)
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{
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if (event->mimeData()->hasFormat(MIME_TYPE))
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event->accept();
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else
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event->ignore();
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}
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void RackWidget::dragLeaveEvent(QDragLeaveEvent *event)
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{
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event->accept();
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}
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void RackWidget::dragMoveEvent(QDragMoveEvent *event)
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{
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if (event->mimeData()->hasFormat(MIME_TYPE))
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{
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event->setDropAction(Qt::MoveAction);
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int closestCol = findClosestTile(event->pos());
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moveTile(m_dragOrigin, closestCol, true);
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// We have a new drag origin, since we just moved the tile
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m_dragOrigin = closestCol;
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event->accept();
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}
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else
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{
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event->ignore();
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}
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}
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void RackWidget::dropEvent(QDropEvent *event)
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{
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if (event->mimeData()->hasFormat(MIME_TYPE))
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{
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int closestCol = findClosestTile(event->pos());
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LOG_DEBUG("Dropping tile " << m_dragOrigin << " closest to tile " << closestCol);
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moveTile(m_dragOrigin, closestCol);
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event->setDropAction(Qt::MoveAction);
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event->accept();
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// Notify the rest of the world that the rack has changed
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ASSERT(m_game != NULL, "No game in progress");
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PlayedRack pldRack;
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Q_FOREACH(const Tile &t, m_tiles)
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{
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pldRack.addNew(t);
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}
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// FIXME: const_cast
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const_cast<PublicGame*>(m_game)->reorderRack(pldRack);
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emit gameUpdated();
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}
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else
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{
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event->ignore();
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}
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}
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int RackWidget::findTile(const QPoint &iPos) const
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{
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for (unsigned i = 0; i < m_tilesVect.size(); ++i)
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{
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if (m_tilesVect[i]->geometry().contains(iPos))
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return i;
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}
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return -1;
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}
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int RackWidget::findClosestTile(const QPoint &iPos) const
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{
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int minDist = geometry().bottomRight().manhattanLength();
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int minIdx = -1;
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for (unsigned i = 0; i < m_tilesVect.size(); ++i)
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{
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QPoint distPoint = iPos - m_tilesVect[i]->geometry().center();
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int dist = distPoint.manhattanLength();
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if (dist < minDist)
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{
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minDist = dist;
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minIdx = i;
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}
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}
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return minIdx;
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}
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void RackWidget::moveTile(int fromPos, int toPos, bool shaded)
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{
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if (fromPos != toPos)
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{
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// Change the order
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Tile moved = m_filteredTiles[fromPos];
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m_filteredTiles.erase(m_filteredTiles.begin() + fromPos);
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m_filteredTiles.insert(m_filteredTiles.begin() + toPos, moved);
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// Update the rack
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setTiles(m_filteredTiles);
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}
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// Change the look of the moved tile
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m_tilesVect[toPos]->tileChanged(shaded ? TileWidget::SHADED : TileWidget::NORMAL,
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m_filteredTiles[toPos]);
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}
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