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finalcut/examples/windows.cpp

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/***********************************************************************
* windows.cpp - Shows window handling *
* *
* This file is part of the FINAL CUT widget toolkit *
* *
* Copyright 2016-2020 Markus Gans *
* *
* FINAL CUT is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 3 of *
* the License, or (at your option) any later version. *
* *
* FINAL CUT 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 Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
***********************************************************************/
#include <utility>
#include <vector>
#include <final/final.h>
namespace fc = finalcut::fc;
using finalcut::FPoint;
using finalcut::FSize;
//----------------------------------------------------------------------
// class SmallWindow
//----------------------------------------------------------------------
class SmallWindow final : public finalcut::FDialog
{
public:
// Constructor
explicit SmallWindow (finalcut::FWidget* = nullptr);
// Disable copy constructor
SmallWindow (const SmallWindow&) = delete;
// Destructor
~SmallWindow() override = default;
// Disable copy assignment operator (=)
SmallWindow& operator = (const SmallWindow&) = delete;
private:
// Method
void adjustSize() override;
// Event handlers
void onShow (finalcut::FShowEvent*) override;
void onTimer (finalcut::FTimerEvent*) override;
// Data members
finalcut::FLabel left_arrow{this};
finalcut::FLabel right_arrow{this};
finalcut::FLabel top_left_label{this};
finalcut::FLabel top_right_label{this};
finalcut::FLabel bottom_label{this};
};
//----------------------------------------------------------------------
SmallWindow::SmallWindow (finalcut::FWidget* parent)
: finalcut::FDialog{parent}
{
const auto& wc = getColorTheme();
const auto arrow_up = finalcut::UniChar::BlackUpPointingTriangle;
const auto arrow_down = finalcut::UniChar::BlackDownPointingTriangle;
left_arrow = arrow_up;
left_arrow.setForegroundColor (wc->label_inactive_fg);
left_arrow.setEmphasis();
left_arrow.ignorePadding();
left_arrow.setGeometry (FPoint{2, 2}, FSize{1, 1});
right_arrow = arrow_up;
right_arrow.setForegroundColor (wc->label_inactive_fg);
right_arrow.setEmphasis();
right_arrow.ignorePadding();
right_arrow.setGeometry (FPoint{int(getWidth()) - 1, 2}, FSize{1, 1});
top_left_label.setText("menu");
top_left_label.setForegroundColor (wc->label_inactive_fg);
top_left_label.setEmphasis();
top_left_label.setGeometry (FPoint{1, 1}, FSize{6, 1});
top_right_label.setText("zoom");
top_right_label.setAlignment (finalcut::Align::Right);
top_right_label.setForegroundColor (wc->label_inactive_fg);
top_right_label.setEmphasis();
top_right_label.setGeometry (FPoint{int(getClientWidth()) - 5, 1}, FSize{6, 1});
finalcut::FString bottom_label_text { "resize\n"
"corner\n" };
bottom_label_text += arrow_down;
bottom_label = bottom_label_text;
bottom_label.setAlignment (finalcut::Align::Right);
bottom_label.setForegroundColor (wc->label_inactive_fg);
bottom_label.setEmphasis();
bottom_label.setGeometry (FPoint{13, 3}, FSize{6, 3});
}
//----------------------------------------------------------------------
void SmallWindow::adjustSize()
{
if ( isZoomed() )
{
top_right_label = "unzoom";
bottom_label.hide();
}
else
{
top_right_label = "zoom";
bottom_label.show();
}
finalcut::FDialog::adjustSize();
right_arrow.setGeometry ( FPoint{int(getWidth()) - 1, 2}
, FSize{1, 1} );
top_right_label.setGeometry ( FPoint{int(getClientWidth()) - 5, 1}
, FSize{6, 1} );
bottom_label.setGeometry ( FPoint{1, int(getClientHeight()) - 2}
, FSize{getClientWidth(), 3} );
}
//----------------------------------------------------------------------
void SmallWindow::onShow (finalcut::FShowEvent*)
{
addTimer(1000);
}
//----------------------------------------------------------------------
void SmallWindow::onTimer (finalcut::FTimerEvent*)
{
left_arrow.unsetEmphasis();
left_arrow.redraw();
right_arrow.unsetEmphasis();
right_arrow.redraw();
top_left_label.unsetEmphasis();
top_left_label.redraw();
top_right_label.unsetEmphasis();
top_right_label.redraw();
bottom_label.unsetEmphasis();
bottom_label.redraw();
delOwnTimers();
}
//----------------------------------------------------------------------
// class Window
//----------------------------------------------------------------------
class Window final : public finalcut::FDialog
{
public:
// Constructor
explicit Window (finalcut::FWidget* = nullptr);
// Disable copy constructor
Window (const Window&) = delete;
// Destructor
~Window() override;
// Disable copy assignment operator (=)
Window& operator = (const Window&) = delete;
private:
struct WinData
{
// Constructor
WinData() = default;
// copy constructor
WinData (const WinData&) = default;
// move constructor
WinData (WinData&&) noexcept = default;
// copy assignment operator (=)
WinData& operator = (const WinData&) = default;
// move assignment operator (=)
WinData& operator = (WinData&&) noexcept = default;
// Data members
bool is_open{false};
finalcut::FString title{};
SmallWindow* dgl{nullptr};
};
// Method
void configureFileMenuItems();
void configureDialogButtons();
void activateWindow (finalcut::FDialog*) const;
void adjustSize() override;
template <typename InstanceT
, typename CallbackT
, typename... Args>
void addClickedCallback ( finalcut::FWidget*
, InstanceT&&, CallbackT&&, Args&&... );
template <typename IteratorT>
finalcut::FDialog* getNext (IteratorT);
template <typename IteratorT>
finalcut::FDialog* getPrevious (IteratorT iter);
// Event handlers
void onClose (finalcut::FCloseEvent*) override;
// Callback methods
void cb_createWindows();
void cb_closeWindows();
void cb_next();
void cb_previous();
void cb_destroyWindow (WinData&) const;
// Data members
std::vector<WinData> windows{};
finalcut::FString drop_down_symbol{finalcut::UniChar::BlackDownPointingTriangle};
finalcut::FMenuBar Menubar{this};
finalcut::FMenu File{"&File", &Menubar};
finalcut::FDialogListMenu DglList{drop_down_symbol, &Menubar};
finalcut::FStatusBar Statusbar{this};
finalcut::FMenuItem New{"&New", &File};
finalcut::FMenuItem Close{"&Close", &File};
finalcut::FMenuItem Line1{&File};
finalcut::FMenuItem Next{"Ne&xt window", &File};
finalcut::FMenuItem Previous{"&Previous window", &File};
finalcut::FMenuItem Line2{&File};
finalcut::FMenuItem Quit{"&Quit", &File};
finalcut::FButton CreateButton{this};
finalcut::FButton CloseButton{this};
finalcut::FButton QuitButton{this};
};
//----------------------------------------------------------------------
Window::Window (finalcut::FWidget* parent)
: finalcut::FDialog{parent}
{
FDialog::setSize ({40, 6});
// Menu bar item
File.setStatusbarMessage ("File management commands");
// Dialog list menu item
DglList.setStatusbarMessage ("List of all the active dialogs");
// File menu items
configureFileMenuItems();
// Dialog buttons
configureDialogButtons();
// Statusbar at the bottom
Statusbar.setMessage("Status bar message");
// Generate data vector for the windows
for (uInt n{1}; n < 7; n++)
{
WinData win_dat;
win_dat.title.sprintf("Window %1u", n);
windows.emplace_back(std::move(win_dat));
}
}
//----------------------------------------------------------------------
Window::~Window()
{
auto iter = windows.begin();
while ( iter != windows.end() )
{
auto& win_dat = *iter;
// Remove all callbacks before Window::cb_destroyWindow() will be called
if ( win_dat.is_open && win_dat.dgl )
win_dat.dgl->delCallback();
iter = windows.erase(iter);
}
}
//----------------------------------------------------------------------
void Window::configureFileMenuItems()
{
// "File" menu item setting
New.setStatusbarMessage ("Create the windows");
Close.setStatusbarMessage ("Close the windows");
Line1.setSeparator();
Next.addAccelerator (finalcut::FKey::Meta_page_down); // Meta/Alt + PgDn
Next.setStatusbarMessage ("Switch to the next window");
Previous.addAccelerator (finalcut::FKey::Meta_page_up); // Meta/Alt + PgUp
Previous.setStatusbarMessage ("Switch to the previous window");
Line2.setSeparator();
Quit.addAccelerator (finalcut::FKey::Meta_x); // Meta/Alt + X
Quit.setStatusbarMessage ("Exit the program");
// Add menu item callback
addClickedCallback (&New, this, &Window::cb_createWindows);
addClickedCallback (&Close, this, &Window::cb_closeWindows);
addClickedCallback (&Next, this, &Window::cb_next);
addClickedCallback (&Previous, this, &Window::cb_previous);
addClickedCallback ( &Quit
, finalcut::getFApplication()
, &finalcut::FApplication::cb_exitApp
, this );
}
//----------------------------------------------------------------------
void Window::configureDialogButtons()
{
// Dialog buttons
CreateButton.setGeometry (FPoint{2, 2}, FSize{9, 1});
CreateButton.setText (L"&Create");
CloseButton.setGeometry (FPoint{15, 2}, FSize{9, 1});
CloseButton.setText (L"C&lose");
QuitButton.setGeometry (FPoint{28, 2}, FSize{9, 1});
QuitButton.setText (L"&Quit");
// Add button callback
addClickedCallback (&CreateButton, this, &Window::cb_createWindows);
addClickedCallback (&CloseButton, this, &Window::cb_closeWindows);
addClickedCallback ( &QuitButton
, finalcut::getFApplication()
, &finalcut::FApplication::cb_exitApp
, this );
}
//----------------------------------------------------------------------
void Window::activateWindow (finalcut::FDialog* win) const
{
if ( ! win || win->isWindowHidden() || win->isWindowActive() )
return;
const bool has_raised = finalcut::FWindow::raiseWindow(win);
win->activateDialog();
if ( has_raised )
win->redraw();
}
//----------------------------------------------------------------------
void Window::adjustSize()
{
finalcut::FDialog::adjustSize();
const std::size_t w = getDesktopWidth();
const std::size_t h = getDesktopHeight();
const auto X = int(1 + (w - 40) / 2);
auto Y = int(1 + (h - 22) / 2);
const int dx = ( w > 80 ) ? int(w - 80) / 2 : 0;
const int dy = ( h > 24 ) ? int(h - 24) / 2 : 0;
if ( Y < 2 )
Y = 2;
setPos (FPoint{X, Y});
const auto& first = windows.begin();
auto iter = first;
while ( iter != windows.end() )
{
if ( (*iter).is_open )
{
const auto n = int(std::distance(first, iter));
const int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
const int y = dy + 11 + int(n / 3) * 3;
(*iter).dgl->setPos (FPoint{x, y});
}
++iter;
}
}
//----------------------------------------------------------------------
template <typename InstanceT
, typename CallbackT
, typename... Args>
void Window::addClickedCallback ( finalcut::FWidget* widget
, InstanceT&& instance
, CallbackT&& callback
, Args&&... args )
{
widget->addCallback
(
"clicked",
std::bind ( std::forward<CallbackT>(callback)
, std::forward<InstanceT>(instance)
, std::forward<Args>(args)... )
);
}
//----------------------------------------------------------------------
template <typename IteratorT>
finalcut::FDialog* Window::getNext (IteratorT iter)
{
auto next_element = iter;
finalcut::FDialog* next{nullptr};
do
{
++next_element;
if ( next_element == getDialogList()->end() )
next_element = getDialogList()->begin();
next = static_cast<finalcut::FDialog*>(*next_element);
} while ( ! next->isEnabled()
|| ! next->acceptFocus()
|| ! next->isVisible()
|| ! next->isWindowWidget() );
return next;
}
//----------------------------------------------------------------------
template <typename IteratorT>
finalcut::FDialog* Window::getPrevious (IteratorT iter)
{
auto prev_element = iter;
finalcut::FDialog* prev;
do
{
if ( prev_element == getDialogList()->begin() )
prev_element = getDialogList()->end();
--prev_element;
prev = static_cast<finalcut::FDialog*>(*prev_element);
} while ( ! prev->isEnabled()
|| ! prev->acceptFocus()
|| ! prev->isVisible()
|| ! prev->isWindowWidget() );
return prev;
}
//----------------------------------------------------------------------
void Window::onClose (finalcut::FCloseEvent* ev)
{
finalcut::FApplication::closeConfirmationDialog (this, ev);
}
//----------------------------------------------------------------------
void Window::cb_createWindows()
{
const auto& first = windows.begin();
auto iter = first;
const auto w = getRootWidget()->getWidth();
const auto h = getRootWidget()->getHeight();
const int dx = ( w > 80 ) ? int(w - 80) / 2 : 0;
const int dy = ( h > 24 ) ? int(h - 24) / 2 : 0;
while ( iter != windows.end() )
{
if ( ! (*iter).is_open )
{
auto& win_dat = *iter;
auto win = new SmallWindow(this);
win_dat.dgl = win;
win_dat.is_open = true;
win->setText(win_dat.title);
const auto n = int(std::distance(first, iter));
const int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
const int y = dy + 11 + int(n / 3) * 3;
win->setGeometry (FPoint{x, y}, FSize{20, 8});
win->setMinimumSize (FSize{20, 8});
win->setResizeable();
win->show();
win->addCallback
(
"destroy",
this, &Window::cb_destroyWindow,
std::ref(win_dat)
);
}
++iter;
}
activateWindow(this);
}
//----------------------------------------------------------------------
void Window::cb_closeWindows()
{
if ( ! getDialogList() || getDialogList()->empty() )
return;
auto iter = getDialogList()->end();
const auto& first = getDialogList()->begin();
activateWindow(this);
do
{
--iter;
if ( (*iter) != this )
(*iter)->close();
}
while ( iter != first );
}
//----------------------------------------------------------------------
void Window::cb_next()
{
if ( ! getDialogList() || getDialogList()->empty() )
return;
auto iter = getDialogList()->begin();
while ( iter != getDialogList()->end() )
{
if ( static_cast<finalcut::FWindow*>(*iter)->isWindowActive() )
{
activateWindow(getNext(iter));
break;
}
++iter;
}
}
//----------------------------------------------------------------------
void Window::cb_previous()
{
if ( ! getDialogList() || getDialogList()->empty() )
return;
auto iter = getDialogList()->end();
do
{
--iter;
if ( (*iter)->isDialogWidget()
&& static_cast<finalcut::FWindow*>(*iter)->isWindowActive() )
{
activateWindow(getPrevious(iter));
break;
}
}
while ( iter != getDialogList()->begin() );
}
//----------------------------------------------------------------------
void Window::cb_destroyWindow (WinData& win_dat) const
{
win_dat.is_open = false;
win_dat.dgl = nullptr;
}
//----------------------------------------------------------------------
// main part
//----------------------------------------------------------------------
int main (int argc, char* argv[])
{
// Create the application object
finalcut::FApplication app {argc, argv};
// Create main dialog object
Window main_dlg {&app};
main_dlg.setText ("Main window");
// Set dialog main_dlg as main widget
finalcut::FWidget::setMainWidget (&main_dlg);
// Show and start the application
main_dlg.show();
return app.exec();
}
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