void ProgressBar::update(int value) {
// check when animated if we are at 100% and this is this the first time we are at 100%
// so we show the progress bar only one time at the end
if (!animated && (value != max || (value == max && last_value == max)))
return;
int now = time(NULL);
// check whether the time since the last show and the change was big enough to show a progress
double percentage = value / (double) max * 100.;
if (last_update + 1 > now && !(last_percentage != max && value == max))
return;
// now calculate the current and average speed
double speed = (double) (value - last_value) / (now - last_update);
double average_speed = (double) value / (now - start);
if (value == max)
// use the average speed at the end
speed = average_speed;
// try to determine the width of the terminal
// use 80 columns as default if we can't determine a terminal size
int terminal_width = 80;
#ifdef TIOCGWINSZ
struct winsize ws = {0, 0, 0, 0};
ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws);
if (ws.ws_col != 0)
terminal_width = ws.ws_col;
#endif
// create the progress stats: percentage, current/maximum value, speed, eta
std::string stats;
// show eta only when progress is not finished, and only when speed != 0
// (speed = 0 can sometimes happen at the begin of rendering)
if (value != max && speed != 0) {
int eta = (max - value) / average_speed;
stats = createProgressStats(percentage, value, max, speed, eta);
} else {
stats = createProgressStats(percentage, value, max, speed);
}
// now create the progress bar
// with the remaining size minus one as size
// (because the space between progress and stats)
int progressbar_width = terminal_width - stats.size() - 1;
std::string progressbar = createProgressBar(progressbar_width, percentage);
// go to the begin of the line and clear it
if (animated) {
std::cout << "\r";
for (int i = 0; i < last_output_len; i++)
std::cout << " ";
std::cout << "\r";
}
// now show everything
std::cout << progressbar << " " << stats;
if (animated) {
std::cout << "\r";
std::cout.flush();
} else
std::cout << std::endl;
// set this as last shown
last_update = now;
last_value = value;
last_percentage = percentage;
last_output_len = progressbar.size() + 1 + stats.size();
}
//! [0]
WidgetGallery::WidgetGallery(QWidget *parent)
: QDialog(parent)
{
originalPalette = QApplication::palette();
styleComboBox = new QComboBox;
styleComboBox->addItem("NorwegianWood");
styleComboBox->addItems(QStyleFactory::keys());
styleLabel = new QLabel(tr("&Style:"));
styleLabel->setBuddy(styleComboBox);
useStylePaletteCheckBox = new QCheckBox(tr("&Use style's standard palette"));
useStylePaletteCheckBox->setChecked(true);
disableWidgetsCheckBox = new QCheckBox(tr("&Disable widgets"));
createTopLeftGroupBox();
createTopRightGroupBox();
createBottomLeftTabWidget();
createBottomRightGroupBox();
createProgressBar();
//! [0]
//! [1]
connect(styleComboBox, SIGNAL(activated(QString)),
//! [1] //! [2]
this, SLOT(changeStyle(QString)));
connect(useStylePaletteCheckBox, SIGNAL(toggled(bool)),
this, SLOT(changePalette()));
connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
topLeftGroupBox, SLOT(setDisabled(bool)));
connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
topRightGroupBox, SLOT(setDisabled(bool)));
connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
bottomLeftTabWidget, SLOT(setDisabled(bool)));
connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
bottomRightGroupBox, SLOT(setDisabled(bool)));
//! [2]
//! [3]
QHBoxLayout *topLayout = new QHBoxLayout;
//! [3] //! [4]
topLayout->addWidget(styleLabel);
topLayout->addWidget(styleComboBox);
topLayout->addStretch(1);
topLayout->addWidget(useStylePaletteCheckBox);
topLayout->addWidget(disableWidgetsCheckBox);
QGridLayout *mainLayout = new QGridLayout;
mainLayout->addLayout(topLayout, 0, 0, 1, 2);
mainLayout->addWidget(topLeftGroupBox, 1, 0);
mainLayout->addWidget(topRightGroupBox, 1, 1);
mainLayout->addWidget(bottomLeftTabWidget, 2, 0);
mainLayout->addWidget(bottomRightGroupBox, 2, 1);
mainLayout->addWidget(progressBar, 3, 0, 1, 2);
mainLayout->setRowStretch(1, 1);
mainLayout->setRowStretch(2, 1);
mainLayout->setColumnStretch(0, 1);
mainLayout->setColumnStretch(1, 1);
setLayout(mainLayout);
setWindowTitle(tr("Styles"));
changeStyle("NorwegianWood");
}
/**
* Lay out the widgets (portrait mode).
*/
void HomeScreen::setupUI()
{
// Get the handle to the main layout and the screen.
mMainLayout = getMainLayout();
mScreen = getScreen();
mLabel = getTopLabel();
mSearchButton = getTopButtonRight();
// We do not need a Back button in this screen,
// so we can dismiss it.
MAWidgetHandle backBtn = getTopButtonLeft();
maWidgetDestroy(backBtn);
// The creation of the main layout is already done in the base class
// constructor, called at derived object creation.
// So, we can use a handle for the main layout at any point.
// Set the text for the button widget in the top layout.
setButtonText(mSearchButton, " NEXT ");
// Add a label before the Progress bar.
mProgressLabel = createLabel(
mScreenWidth,
" Please wait...",
DARK_GREY,
mFontSize );
// Show it only after Search is pressed.
maWidgetSetProperty(mProgressLabel,MAW_WIDGET_VISIBLE, "false");
maWidgetAddChild(mMainLayout, mProgressLabel);
// Create a progress bar for the Search action.
mProgressBar = createProgressBar();
// Set the range of the progress bar from 0..100
setWidgetProperty(
mProgressBar, MAW_PROGRESS_BAR_MAX, PROGRESS_BAR_MAX_VALUE);
// Set the progress value to 0.
setWidgetProperty(
mProgressBar, MAW_PROGRESS_BAR_PROGRESS, 0);
// Hide the widget at first, and display it when a Search is being performed.
maWidgetSetProperty(
mProgressBar, MAW_WIDGET_VISIBLE, "false");
maWidgetAddChild(mMainLayout, mProgressBar);
// Next, fill the remaining space with an edit box and
// some check boxes for the categories.
MAWidgetHandle hintLabel = createLabel(
mScreenWidth,
MESSAGE_EDITBOX_HINT.c_str(),
BLUE,
mFontSize);
maWidgetSetProperty(
hintLabel,MAW_LABEL_TEXT_HORIZONTAL_ALIGNMENT,MAW_ALIGNMENT_LEFT);
maWidgetAddChild(mMainLayout, hintLabel);
// Add only one edit box.
mEditBox = createEditBox(mScreenWidth, MAW_CONSTANT_WRAP_CONTENT);
maWidgetAddChild(mMainLayout, mEditBox);
// Add a small spacer before the categories.
maWidgetAddChild(mMainLayout, createSpacer(mScreenWidth, mPaddingSize));
// Add the layout with checkable categories.
maWidgetAddChild( mMainLayout, createCategoriesLayout());
// Add a label for the slider.
MAWidgetHandle sliderLabel = createLabel(
mScreenWidth,
" Please select the results limit. ",
BLUE,mFontSize);
maWidgetAddChild(mMainLayout, sliderLabel);
// Create a slider control for selecting the desired number of results.
mSlider = createSlider();
setWidgetProperty(mSlider, MAW_SLIDER_MAX, SLIDER_MAX_VALUE);
// Set the current slider value to 10.
setWidgetProperty(mSlider, MAW_SLIDER_VALUE, 10);
maWidgetAddChild(mMainLayout, mSlider);
// Add two labels with minimum and maximum value of the slider.
MAWidgetHandle valuesLayout = maWidgetCreate(MAW_HORIZONTAL_LAYOUT);
MAWidgetHandle minValue = createLabel(
mScreenWidth / 2,
" 0 ",
DARK_GREY,
mFontSize);
maWidgetSetProperty(minValue, MAW_LABEL_TEXT_HORIZONTAL_ALIGNMENT,
MAW_ALIGNMENT_LEFT);
maWidgetAddChild(valuesLayout, minValue);
MAWidgetHandle maxValue = createLabel(
mScreenWidth / 2,
"", DARK_GREY,
mFontSize);
setWidgetProperty(maxValue, MAW_LABEL_TEXT, SLIDER_MAX_VALUE);
maWidgetSetProperty(maxValue, MAW_LABEL_TEXT_HORIZONTAL_ALIGNMENT,
MAW_ALIGNMENT_RIGHT);
maWidgetAddChild(valuesLayout, maxValue);
// Add this layout to the main one.
maWidgetAddChild(mMainLayout, valuesLayout);
}
