src/Dialog_DropBox.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2016 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version, but always including the *additional*
   9 // restrictions defined in the "License.txt" file.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this program; if not, write to the Free Software Foundation, Inc.,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 // http://www.gnu.org/licenses/gpl-2.0.txt
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 #include "Dialog_DropBox.h"
  24
  25 #include "UIC_DropBox.h"
  26
  27 //Internal
  28 #include "Global.h"
  29 #include "Model_Settings.h"
  30
  31 //MUtils
  32 #include <MUtils/Global.h>
  33
  34 //Qt
  35 #include <QThread>
  36 #include <QMovie>
  37 #include <QKeyEvent>
  38 #include <QDesktopWidget>
  39 #include <QToolTip>
  40 #include <QTimer>
  41
  42 #define EPS (1.0E-5)
  43 #define SET_FONT_BOLD(WIDGET,BOLD) { QFont _font = (WIDGET)->font(); _font.setBold(BOLD); (WIDGET)->setFont(_font); }
  44
  45 static QRect SCREEN_GEOMETRY(void)
  46 {
  47         QDesktopWidget *desktop = QApplication::desktop();
  48         return (desktop->isVirtualDesktop() ? desktop->screen()->geometry() : desktop->availableGeometry());
  49 }
  50
  51 static const double LOW_OPACITY = 0.85;
  52
  53 ////////////////////////////////////////////////////////////
  54 // Constructor
  55 ////////////////////////////////////////////////////////////
  56
  57 DropBox::DropBox(QWidget *parent, QAbstractItemModel *model, SettingsModel *settings)
  58 :
  59 QDialog(parent, Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint),
  60         ui(new Ui::DropBox),
  61         m_model(model),
  62         m_settings(settings),
  63         m_moving(false),
  64         m_screenGeometry(SCREEN_GEOMETRY()),
  65         m_firstShow(true)
  66 {
  67         //Init the dialog, from the .ui file
  68         ui->setupUi(this);
  69
  70         //Init counter
  71         m_counterLabel = new QLabel(this);
  72         m_counterLabel->setParent(ui->dropBoxLabel);
  73         m_counterLabel->setText("0");
  74         m_counterLabel->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
  75         SET_FONT_BOLD(m_counterLabel, true);
  76
  77         m_windowReferencePoint = new QPoint;
  78         m_mouseReferencePoint = new QPoint;
  79
  80         //Prevent close
  81         m_canClose = false;
  82
  83         //Make transparent
  84         setAttribute(Qt::WA_TranslucentBackground);
  85         setWindowOpacity(LOW_OPACITY);
  86
  87         //Translate UI
  88         QEvent languageChangeEvent(QEvent::LanguageChange);
  89         changeEvent(&languageChangeEvent);
  90 }
  91
  92 ////////////////////////////////////////////////////////////
  93 // Destructor
  94 ////////////////////////////////////////////////////////////
  95
  96 DropBox::~DropBox(void)
  97 {
  98         if(!m_firstShow)
  99         {
 100                 m_settings->dropBoxWidgetPositionX(this->x());
 101                 m_settings->dropBoxWidgetPositionY(this->y());
 102         }
 103
 104         MUTILS_DELETE(m_counterLabel);
 105         MUTILS_DELETE(m_windowReferencePoint);
 106         MUTILS_DELETE(m_mouseReferencePoint);
 107         MUTILS_DELETE(ui);
 108 }
 109
 110 ////////////////////////////////////////////////////////////
 111 // PUBLIC SLOTS
 112 ////////////////////////////////////////////////////////////
 113
 114 void DropBox::modelChanged(void)
 115 {
 116         if(m_model)
 117         {
 118                 m_counterLabel->setText(QString::number(m_model->rowCount()));
 119         }
 120 }
 121
 122 ////////////////////////////////////////////////////////////
 123 // EVENTS
 124 ////////////////////////////////////////////////////////////
 125
 126 /*
 127  * Re-translate the UI
 128  */
 129 void DropBox::changeEvent(QEvent *e)
 130 {
 131         if(e->type() == QEvent::LanguageChange)
 132         {
 133                 ui->retranslateUi(this);
 134                 ui->dropBoxLabel->setToolTip(QString("<b>%1</b><br><nobr>%2</nobr><br><nobr>%3</nobr>").arg(tr("LameXP DropBox"), tr("You can add files to LameXP via Drag&amp;Drop here!"), tr("(Right-click to close the DropBox)")));
 135         }
 136 }
 137
 138 void DropBox::showEvent(QShowEvent *event)
 139 {
 140         m_screenGeometry = SCREEN_GEOMETRY();
 141         setFixedSize(ui->dropBoxLabel->pixmap()->size());
 142
 143         m_counterLabel->setGeometry(0, ui->dropBoxLabel->height() - 30, ui->dropBoxLabel->width(), 25);
 144
 145         if(m_firstShow)
 146         {
 147                 m_firstShow = false;
 148                 int pos_x = m_settings->dropBoxWidgetPositionX();
 149                 int pos_y = m_settings->dropBoxWidgetPositionY();
 150                 if((pos_x < 0) && (pos_y < 0))
 151                 {
 152                         QWidget *const parentWidget = dynamic_cast<QWidget*>(this->parent());
 153                         QWidget *const targetWidget = parentWidget ? parentWidget : this;
 154                         QRect availGeometry = QApplication::desktop()->availableGeometry(targetWidget);
 155                         pos_x = availGeometry.width()  - frameGeometry().width()  + availGeometry.left();
 156                         pos_y = availGeometry.height() - frameGeometry().height() + availGeometry.top();
 157                 }
 158                 else
 159                 {
 160                         pos_x = qBound(0, pos_x, m_screenGeometry.width()  - frameGeometry().width());
 161                         pos_y = qBound(0, pos_y, m_screenGeometry.height() - frameGeometry().height());
 162                 }
 163                 move(pos_x, pos_y);
 164         }
 165
 166         if(m_moving)
 167         {
 168                 QApplication::restoreOverrideCursor();
 169                 m_moving = false;
 170                 setWindowOpacity(LOW_OPACITY);
 171         }
 172
 173         boundWidget(this);
 174 }
 175
 176 void DropBox::keyPressEvent(QKeyEvent *event)
 177 {
 178         event->ignore();
 179 }
 180
 181 void DropBox::keyReleaseEvent(QKeyEvent *event)
 182 {
 183         event->ignore();
 184 }
 185
 186 void DropBox::closeEvent(QCloseEvent *event)
 187 {
 188         if(!m_canClose)
 189         {
 190                 event->ignore();
 191         }
 192 }
 193
 194 void DropBox::mousePressEvent(QMouseEvent *event)
 195 {
 196         if(m_moving)
 197         {
 198                 event->ignore();
 199                 return;
 200         }
 201
 202         if(event->button() == Qt::RightButton)
 203         {
 204                 hide();
 205                 if(m_settings) m_settings->dropBoxWidgetEnabled(false);
 206                 return;
 207         }
 208
 209         m_screenGeometry = SCREEN_GEOMETRY();
 210         QApplication::setOverrideCursor(Qt::SizeAllCursor);
 211         *m_windowReferencePoint = this->pos();
 212         *m_mouseReferencePoint = event->globalPos();
 213         m_moving = true;
 214         setWindowOpacity(1.0);
 215 }
 216
 217 void DropBox::mouseReleaseEvent(QMouseEvent *event)
 218 {
 219         if(m_moving && event->button() != Qt::RightButton)
 220         {
 221                 boundWidget(this);
 222                 QApplication::restoreOverrideCursor();
 223                 setWindowOpacity(LOW_OPACITY);
 224                 m_settings->dropBoxWidgetPositionX(this->x());
 225                 m_settings->dropBoxWidgetPositionY(this->y());
 226                 m_moving = false;
 227         }
 228 }
 229
 230 void DropBox::mouseMoveEvent(QMouseEvent *event)
 231 {
 232         if(!m_moving)
 233         {
 234                 return;
 235         }
 236
 237         const int delta_x = m_mouseReferencePoint->x() - event->globalX();
 238         const int delta_y = m_mouseReferencePoint->y() - event->globalY();
 239
 240         const int max_x = m_screenGeometry.width() -  frameGeometry().width() + m_screenGeometry.left();
 241         const int max_y = m_screenGeometry.height() - frameGeometry().height() + m_screenGeometry.top();
 242
 243         const int new_x = qBound(m_screenGeometry.left(), m_windowReferencePoint->x() - delta_x, max_x);
 244         const int new_y = qBound(m_screenGeometry.top(),  m_windowReferencePoint->y() - delta_y, max_y);
 245
 246         move(new_x, new_y);
 247 }
 248
 249 void DropBox::showToolTip(void)
 250 {
 251         QToolTip::showText(ui->dropBoxLabel->mapToGlobal(ui->dropBoxLabel->pos()), ui->dropBoxLabel->toolTip());
 252 }
 253
 254 bool DropBox::event(QEvent *event)
 255 {
 256         switch(event->type())
 257         {
 258         case QEvent::Leave:
 259         case QEvent::WindowDeactivate:
 260                 if(m_moving)
 261                 {
 262                         QApplication::restoreOverrideCursor();
 263                         m_moving = false;
 264                 }
 265                 break;
 266         }
 267
 268         return QDialog::event(event);
 269 }
 270
 271 ////////////////////////////////////////////////////////////
 272 // PRIVATE
 273 ////////////////////////////////////////////////////////////
 274
 275 void DropBox::boundWidget(QWidget *widget)
 276 {
 277         static const int magnetic = 24;
 278         QRect availGeometry = QApplication::desktop()->availableGeometry(widget);
 279
 280         const int max_x = availGeometry.width()  - widget->frameGeometry().width()  + availGeometry.left();
 281         const int max_y = availGeometry.height() - widget->frameGeometry().height() + availGeometry.top();
 282
 283         int new_x = qBound(availGeometry.left(), widget->x(), max_x);
 284         int new_y = qBound(availGeometry.top(),  widget->y(), max_y);
 285
 286         if(new_x - availGeometry.left() < magnetic) new_x = availGeometry.left();
 287         if(new_y - availGeometry.top()  < magnetic) new_y = availGeometry.top();
 288
 289         if(max_x - new_x < magnetic) new_x = max_x;
 290         if(max_y - new_y < magnetic) new_y = max_y;
 291
 292         if((widget->x() != new_x) || (widget->y() != new_y))
 293         {
 294                 widget->move(new_x, new_y);
 295         }
 296 }