src/Dialog_WorkingBanner.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2015 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_WorkingBanner.h"
  24 #include "UIC_WorkingBanner.h"
  25
  26 //Internal
  27 #include "Global.h"
  28
  29 //MUtils
  30 #include <MUtils/Global.h>
  31 #include <MUtils/GUI.h>
  32 #include <MUtils/Taskbar7.h>
  33
  34 //Qt
  35 #include <QThread>
  36 #include <QMovie>
  37 #include <QKeyEvent>
  38 #include <QFontMetrics>
  39 #include <QPainter>
  40 #include <QWindowsVistaStyle>
  41 #include <QTimer>
  42
  43 #define EPS (1.0E-5)
  44
  45 /* It can happen that the QThread has just terminated and already emitted the 'terminated' signal, but did NOT change the 'isRunning' flag to FALSE yet. */
  46 /* For this reason the macro will first check the 'isRunning' flag. If (and only if) the flag still returns TRUE, then we will wait() for at most 50 ms. */
  47 /* If, after 50 ms, the wait() function returns with FALSE, then the thread probably is still running and we return TRUE. Otherwise we can return FALSE. */
  48 #define THREAD_RUNNING(THRD) (((THRD)->isRunning()) ? (!((THRD)->wait(1))) : false)
  49
  50 /*Update text color*/
  51 static inline void SET_TEXT_COLOR(QWidget *control, const QColor &color)
  52 {
  53         QPalette pal = control->palette();
  54         pal.setColor(QPalette::WindowText, color);
  55         pal.setColor(QPalette::Text, color);
  56         control->setPalette(pal);
  57 }
  58
  59 /*Make widget translucent*/
  60 static inline void MAKE_TRANSLUCENT(QWidget *control)
  61 {
  62         control->setAttribute(Qt::WA_TranslucentBackground);
  63         control->setAttribute(Qt::WA_NoSystemBackground);
  64 }
  65
  66 /*Update widget margins*/
  67 static inline void UPDATE_MARGINS(QWidget *control, int l = 0, int r = 0, int t = 0, int b = 0)
  68 {
  69         if(QLayout *layout = control->layout())
  70         {
  71                 QMargins margins = layout->contentsMargins();
  72                 margins.setLeft(margins.left() + l);
  73                 margins.setRight(margins.right() + r);
  74                 margins.setTop(margins.top() + t);
  75                 margins.setBottom(margins.bottom() + b);
  76                 layout->setContentsMargins(margins);
  77         }
  78 }
  79
  80 ////////////////////////////////////////////////////////////
  81 // Constructor
  82 ////////////////////////////////////////////////////////////
  83
  84 WorkingBanner::WorkingBanner(QWidget *parent)
  85 :
  86         QDialog(parent, Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint),
  87         ui(new Ui::WorkingBanner()),
  88         m_taskbar(new MUtils::Taskbar7(parent)),
  89         m_metrics(NULL), m_working(NULL), m_style(NULL)
  90 {
  91         //Init the dialog, from the .ui file
  92         ui->setupUi(this);
  93         setModal(true);
  94
  95         //Enable the "sheet of glass" effect
  96         if(MUtils::GUI::sheet_of_glass(this))
  97         {
  98                 m_style.reset(new QWindowsVistaStyle());
  99                 this->setStyle(m_style.data());
 100                 ui->progressBar->setStyle(m_style.data());
 101                 ui->labelStatus->setStyle(m_style.data());
 102                 ui->labelStatus->setStyleSheet("background-color: #FFFFFF;");
 103         }
 104         else
 105         {
 106                 UPDATE_MARGINS(this, 5);
 107                 m_working.reset(new QMovie(":/images/Busy.gif"));
 108                 m_working->setCacheMode(QMovie::CacheAll);
 109                 ui->labelWorking->setMovie(m_working.data());
 110         }
 111
 112         //Set Opacity
 113         this->setWindowOpacity(0.9);
 114
 115         //Set wait cursor
 116         setCursor(Qt::WaitCursor);
 117
 118         //Clear label
 119         ui->labelStatus->clear();
 120 }
 121
 122 ////////////////////////////////////////////////////////////
 123 // Destructor
 124 ////////////////////////////////////////////////////////////
 125
 126 WorkingBanner::~WorkingBanner(void)
 127 {
 128         if(!m_working.isNull())
 129         {
 130                 m_working->stop();
 131         }
 132
 133         delete ui;
 134 }
 135
 136 ////////////////////////////////////////////////////////////
 137 // PUBLIC FUNCTIONS
 138 ////////////////////////////////////////////////////////////
 139
 140 void WorkingBanner::show(const QString &text)
 141 {
 142         m_canClose = false;
 143
 144         QDialog::show();
 145         setFixedSize(size());
 146         setText(text);
 147
 148         //Reset progress
 149         ui->progressBar->setMinimum(0);
 150         ui->progressBar->setMaximum(0);
 151         ui->progressBar->setValue(-1);
 152 }
 153
 154 void WorkingBanner::show(const QString &text, QThread *thread)
 155 {
 156         //Show splash
 157         this->show(text);
 158
 159         //Create event loop
 160         QEventLoop *loop = new QEventLoop(this);
 161         connect(thread, SIGNAL(finished()), loop, SLOT(quit()));
 162         connect(thread, SIGNAL(terminated()), loop, SLOT(quit()));
 163
 164         //Set taskbar state
 165         m_taskbar->setOverlayIcon(&QIcon(":/icons/hourglass.png"));
 166         m_taskbar->setTaskbarState(MUtils::Taskbar7::TASKBAR_STATE_INTERMEDIATE);
 167
 168         //Start the thread
 169         thread->start();
 170
 171         //Update cursor
 172         QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
 173
 174         //Loop while thread is still running
 175         while(THREAD_RUNNING(thread))
 176         {
 177                 loop->exec();
 178         }
 179
 180         //Restore cursor
 181         QApplication::restoreOverrideCursor();
 182
 183         //Set taskbar state
 184         m_taskbar->setTaskbarState(MUtils::Taskbar7::TASKBAR_STATE_NONE);
 185         m_taskbar->setOverlayIcon(NULL);
 186
 187         //Free memory
 188         MUTILS_DELETE(loop);
 189
 190         //Hide splash
 191         this->close();
 192 }
 193
 194 void WorkingBanner::show(const QString &text, QEventLoop *loop)
 195 {
 196         //Show splash
 197         this->show(text);
 198
 199         //Set taskbar state
 200         m_taskbar->setOverlayIcon(&QIcon(":/icons/hourglass.png"));
 201         m_taskbar->setTaskbarState(MUtils::Taskbar7::TASKBAR_STATE_INTERMEDIATE);
 202
 203         //Update cursor
 204         QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
 205
 206         //Loop while thread is running
 207         loop->exec(QEventLoop::ExcludeUserInputEvents);
 208
 209         //Restore cursor
 210         QApplication::restoreOverrideCursor();
 211
 212         //Set taskbar state
 213         m_taskbar->setTaskbarState(MUtils::Taskbar7::TASKBAR_STATE_NONE);
 214         m_taskbar->setOverlayIcon(NULL);
 215
 216         //Hide splash
 217         this->close();
 218 }
 219
 220 bool WorkingBanner::close(void)
 221 {
 222         m_canClose = true;
 223         emit userAbort();
 224         return QDialog::close();
 225 }
 226
 227 ////////////////////////////////////////////////////////////
 228 // EVENTS
 229 ////////////////////////////////////////////////////////////
 230
 231 void WorkingBanner::keyPressEvent(QKeyEvent *event)
 232 {
 233         if(event->key() == Qt::Key_Escape)
 234         {
 235                 qDebug("QT::KEY_ESCAPE pressed!");
 236                 emit userAbort();
 237         }
 238         else if(event->key() == Qt::Key_M)
 239         {
 240                 QTimer::singleShot(0, parent(), SLOT(showMinimized()));
 241         }
 242
 243         QDialog::keyPressEvent(event);
 244 }
 245
 246 void WorkingBanner::keyReleaseEvent(QKeyEvent *event)
 247 {
 248         QDialog::keyReleaseEvent(event);
 249 }
 250
 251 void WorkingBanner::closeEvent(QCloseEvent *event)
 252 {
 253         if(!m_canClose) event->ignore();
 254 }
 255
 256 void WorkingBanner::showEvent(QShowEvent *event)
 257 {
 258         QDialog::showEvent(event);
 259         if(!event->spontaneous())
 260         {
 261                 if(m_working)
 262                 {
 263                         m_working->start();
 264                 }
 265         }
 266         QTimer::singleShot(25, this, SLOT(windowShown()));
 267 }
 268
 269 void WorkingBanner::hideEvent(QHideEvent *event)
 270 {
 271         QDialog::hideEvent(event);
 272         if(!event->spontaneous())
 273         {
 274                 if(m_working)
 275                 {
 276                         m_working->stop();
 277                 }
 278         }
 279 }
 280
 281 ////////////////////////////////////////////////////////////
 282 // SLOTS
 283 ////////////////////////////////////////////////////////////
 284
 285 void WorkingBanner::windowShown(void)
 286 {
 287         MUtils::GUI::bring_to_front(this);
 288 }
 289
 290 void WorkingBanner::setText(const QString &text)
 291 {
 292         if(m_metrics.isNull())
 293         {
 294                  m_metrics.reset(new QFontMetrics(ui->labelStatus->font()));
 295         }
 296
 297         if(m_metrics->width(text) <= ui->labelStatus->width() - 16)
 298         {
 299                 ui->labelStatus->setText(text);
 300         }
 301         else
 302         {
 303                 QString choppedText = text.simplified().append("...");
 304                 while((m_metrics->width(choppedText) > ui->labelStatus->width() - 16) && (choppedText.length() > 8))
 305                 {
 306                         choppedText.chop(4);
 307                         choppedText = choppedText.trimmed();
 308                         choppedText.append("...");
 309                 }
 310                 ui->labelStatus->setText(choppedText);
 311         }
 312 }
 313
 314 void WorkingBanner::setProgressMax(unsigned int max)
 315 {
 316         ui->progressBar->setMaximum(max);
 317         if(ui->progressBar->maximum() > ui->progressBar->minimum())
 318         {
 319                 m_taskbar->setTaskbarState(MUtils::Taskbar7::TASKBAR_STATE_NONE);
 320                 m_taskbar->setTaskbarProgress(ui->progressBar->value(), ui->progressBar->maximum());
 321         }
 322         else
 323         {
 324                 m_taskbar->setTaskbarState(MUtils::Taskbar7::TASKBAR_STATE_INTERMEDIATE);
 325         }
 326 }
 327
 328 void WorkingBanner::setProgressVal(unsigned int val)
 329 {
 330         ui->progressBar->setValue(val);
 331         if(ui->progressBar->maximum() > ui->progressBar->minimum())
 332         {
 333                 m_taskbar->setTaskbarProgress(ui->progressBar->value(), ui->progressBar->maximum());
 334         }
 335 }
 336
 337 ////////////////////////////////////////////////////////////
 338 // Private
 339 ////////////////////////////////////////////////////////////
 340
 341 /*
 342 void WorkingBanner::updateProgress(void)
 343 {
 344         if(m_progressMax > 0)
 345         {
 346                 int newProgress = qRound(qBound(0.0, static_cast<double>(m_progressVal) / static_cast<double>(m_progressMax), 1.0) * 100.0);
 347                 if(m_progressInt != newProgress)
 348                 {
 349                         m_progressInt = newProgress;
 350                         m_progress->setText(QString::number(m_progressInt));
 351                         if(this->isVisible())
 352                         {
 353                                 labelStatus->repaint();
 354                         }
 355                 }
 356         }
 357 }
 358 */