685 lines
15 KiB
C++
685 lines
15 KiB
C++
/************************************************************************
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* ftogglebutton.cpp - Intermediate base class for a toggle button *
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* *
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* This file is part of the Final Cut widget toolkit *
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* *
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* Copyright 2014-2017 Markus Gans *
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* *
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* The Final Cut 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 3 of the License, or *
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* (at your option) any later version. *
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* *
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* The Final Cut 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, see <http://www.gnu.org/licenses/>. *
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************************************************************************/
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#include "final/fapplication.h"
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#include "final/fbuttongroup.h"
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#include "final/fstatusbar.h"
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#include "final/ftogglebutton.h"
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//----------------------------------------------------------------------
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// class FToggleButton
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//----------------------------------------------------------------------
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// constructor and destructor
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//----------------------------------------------------------------------
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FToggleButton::FToggleButton (FWidget* parent)
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: FWidget(parent)
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, checked(false)
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, label_offset_pos(0)
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, button_width(0)
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, button_group(0)
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, focus_inside_group(true)
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, text()
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{
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init();
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if ( parent && parent->isInstanceOf("FButtonGroup") )
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{
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setGroup(static_cast<FButtonGroup*>(parent));
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if ( hasGroup() )
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getGroup()->insert(this); // insert into button group
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}
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}
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//----------------------------------------------------------------------
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FToggleButton::FToggleButton (const FString& txt, FWidget* parent)
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: FWidget(parent)
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, checked(false)
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, label_offset_pos(0)
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, button_width(0)
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, button_group(0)
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, focus_inside_group(true)
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, text()
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{
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init();
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setText(txt);
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if ( parent && parent->isInstanceOf("FButtonGroup") )
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{
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setGroup(static_cast<FButtonGroup*>(parent));
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if ( hasGroup() )
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getGroup()->insert(this); // insert into button group
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}
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}
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//----------------------------------------------------------------------
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FToggleButton::~FToggleButton() // destructor
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{
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delAccelerator();
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if ( hasGroup() )
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getGroup()->remove(this);
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}
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// public methods of FToggleButton
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//----------------------------------------------------------------------
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void FToggleButton::setGeometry (int x, int y, int w, int h, bool adjust)
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{
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// Set the toggle button geometry
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int min_width = button_width + int(text.getLength());
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if ( w < min_width )
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w = min_width;
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const FRect geometry(x, y, w, h);
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if ( hasGroup() )
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getGroup()->checkScrollSize(geometry);
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FWidget::setGeometry(x, y, w, h, adjust);
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setNoUnderline (bool on)
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{
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if ( on )
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flags |= fc::no_underline;
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else
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flags &= ~fc::no_underline;
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return on;
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setEnable (bool on)
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{
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FWidget::setEnable(on);
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if ( on )
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{
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setHotkeyAccelerator();
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if ( hasFocus() )
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{
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setForegroundColor (wc.toggle_button_active_focus_fg);
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setBackgroundColor (wc.toggle_button_active_focus_bg);
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}
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else
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{
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setForegroundColor (wc.toggle_button_active_fg);
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setBackgroundColor (wc.toggle_button_active_bg);
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}
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}
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else
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{
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delAccelerator();
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setForegroundColor (wc.toggle_button_inactive_fg);
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setBackgroundColor (wc.toggle_button_inactive_bg);
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}
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return on;
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setFocus (bool on)
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{
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FWidget::setFocus(on);
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if ( on )
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{
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if ( isEnabled() )
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{
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if ( isRadioButton() )
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focus_inside_group = false;
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setForegroundColor (wc.toggle_button_active_focus_fg);
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setBackgroundColor (wc.toggle_button_active_focus_bg);
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if ( getStatusBar() )
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{
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const FString& msg = getStatusbarMessage();
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const FString& curMsg = getStatusBar()->getMessage();
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if ( curMsg != msg )
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getStatusBar()->setMessage(msg);
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}
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}
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}
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else
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{
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if ( isEnabled() )
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{
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setForegroundColor (wc.toggle_button_active_fg);
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setBackgroundColor (wc.toggle_button_active_bg);
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if ( getStatusBar() )
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getStatusBar()->clearMessage();
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}
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}
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return on;
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setChecked (bool on)
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{
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if ( checked != on )
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{
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checked = on;
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processToggle();
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}
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return checked;
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}
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//----------------------------------------------------------------------
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void FToggleButton::setText (const FString& txt)
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{
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text = txt;
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setWidth(button_width + int(text.getLength()));
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if ( isEnabled() )
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{
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delAccelerator();
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setHotkeyAccelerator();
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}
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}
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//----------------------------------------------------------------------
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void FToggleButton::hide()
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{
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int size;
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short fg, bg;
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char* blank;
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FWidget* parent_widget = getParentWidget();
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FWidget::hide();
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if ( parent_widget )
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{
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fg = parent_widget->getForegroundColor();
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bg = parent_widget->getBackgroundColor();
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}
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else
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{
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fg = wc.dialog_fg;
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bg = wc.dialog_bg;
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}
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setColor (fg, bg);
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size = getWidth();
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if ( size < 0 )
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return;
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try
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{
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blank = new char[size + 1];
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}
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catch (const std::bad_alloc& ex)
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{
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std::cerr << "not enough memory to alloc " << ex.what() << std::endl;
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return;
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}
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std::memset(blank, ' ', uLong(size));
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blank[size] = '\0';
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setPrintPos (1, 1);
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print (blank);
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delete[] blank;
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}
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//----------------------------------------------------------------------
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void FToggleButton::onMouseDown (FMouseEvent* ev)
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{
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if ( ev->getButton() != fc::LeftButton )
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return;
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if ( hasFocus() )
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return;
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FWidget* focused_widget = getFocusWidget();
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FFocusEvent out (fc::FocusOut_Event);
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FApplication::queueEvent(focused_widget, &out);
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setFocus();
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if ( focused_widget )
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focused_widget->redraw();
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redraw();
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if ( getStatusBar() )
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{
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getStatusBar()->drawMessage();
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updateTerminal();
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flush_out();
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}
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}
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//----------------------------------------------------------------------
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void FToggleButton::onMouseUp (FMouseEvent* ev)
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{
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if ( ev->getButton() != fc::LeftButton )
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return;
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if ( ! getTermGeometry().contains(ev->getTermPos()) )
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return;
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if ( isRadioButton() )
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{
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if ( ! checked )
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{
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checked = true;
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processToggle();
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}
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}
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else
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{
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checked = not checked;
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processToggle();
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}
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redraw();
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processClick();
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}
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//----------------------------------------------------------------------
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void FToggleButton::onWheel (FWheelEvent* ev)
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{
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if ( ! hasGroup() )
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return;
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getGroup()->onWheel(ev);
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}
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//----------------------------------------------------------------------
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void FToggleButton::onAccel (FAccelEvent* ev)
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{
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if ( ! isEnabled() )
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return;
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if ( ! hasFocus() )
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{
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FWidget* focused_widget = static_cast<FWidget*>(ev->focusedWidget());
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if ( focused_widget && focused_widget->isWidget() )
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{
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FFocusEvent out (fc::FocusOut_Event);
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FApplication::queueEvent(focused_widget, &out);
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setFocus();
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focused_widget->redraw();
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}
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}
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if ( isRadioButton() )
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{
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if ( ! checked )
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{
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checked = true;
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processToggle();
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}
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}
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else
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{
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checked = not checked;
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processToggle();
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}
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redraw();
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if ( getStatusBar() )
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{
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getStatusBar()->drawMessage();
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updateTerminal();
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flush_out();
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}
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processClick();
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ev->accept();
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}
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//----------------------------------------------------------------------
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void FToggleButton::onFocusIn (FFocusEvent*)
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{
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if ( getStatusBar() )
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getStatusBar()->drawMessage();
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}
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//----------------------------------------------------------------------
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void FToggleButton::onFocusOut (FFocusEvent* out_ev)
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{
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if ( getStatusBar() )
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{
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getStatusBar()->clearMessage();
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getStatusBar()->drawMessage();
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}
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if ( ! hasGroup() )
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return;
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if ( ! focus_inside_group && isRadioButton() )
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{
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focus_inside_group = true;
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out_ev->ignore();
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if ( out_ev->getFocusType() == fc::FocusNextWidget )
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getGroup()->focusNextChild();
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if ( out_ev->getFocusType() == fc::FocusPreviousWidget )
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getGroup()->focusPrevChild();
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redraw();
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}
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else if ( this == getGroup()->getLastButton()
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&& out_ev->getFocusType() == fc::FocusNextWidget )
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{
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out_ev->ignore();
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getGroup()->focusNextChild();
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redraw();
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}
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else if ( this == getGroup()->getFirstButton()
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&& out_ev->getFocusType() == fc::FocusPreviousWidget )
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{
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out_ev->ignore();
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getGroup()->focusPrevChild();
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redraw();
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}
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}
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// protected methods of FToggleButton
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//----------------------------------------------------------------------
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uChar FToggleButton::getHotkey()
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{
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uInt length;
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if ( text.isEmpty() )
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return 0;
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length = text.getLength();
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for (uInt i = 0; i < length; i++)
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{
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try
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{
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if ( i + 1 < length && text[i] == '&' )
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return uChar(text[++i]);
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}
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catch (const std::out_of_range&)
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{
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return 0;
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}
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}
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return 0;
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}
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//----------------------------------------------------------------------
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void FToggleButton::setHotkeyAccelerator()
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{
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int hotkey = getHotkey();
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if ( hotkey )
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{
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if ( std::isalpha(hotkey) || std::isdigit(hotkey) )
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{
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addAccelerator (std::tolower(hotkey));
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addAccelerator (std::toupper(hotkey));
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// Meta + hotkey
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addAccelerator (fc::Fmkey_meta + std::tolower(hotkey));
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}
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else
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addAccelerator (getHotkey());
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}
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else
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delAccelerator();
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}
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//----------------------------------------------------------------------
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bool FToggleButton::isRadioButton() const
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{
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return isInstanceOf("FRadioButton");
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}
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//----------------------------------------------------------------------
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bool FToggleButton::isCheckboxButton() const
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{
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return isInstanceOf("FCheckBox");
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}
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//----------------------------------------------------------------------
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void FToggleButton::draw()
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{
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bool isFocus = ((flags & fc::focus) != 0);
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if ( isFocus && getStatusBar() )
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{
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const FString& msg = getStatusbarMessage();
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const FString& curMsg = getStatusBar()->getMessage();
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if ( curMsg != msg )
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{
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getStatusBar()->setMessage(msg);
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getStatusBar()->drawMessage();
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}
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}
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// set the cursor to the button
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if ( isRadioButton() || isCheckboxButton() )
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setCursorPos (2, 1);
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}
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//----------------------------------------------------------------------
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void FToggleButton::drawLabel()
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{
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uInt length, i;
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int hotkeypos;
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FString txt;
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wchar_t* LabelText;
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register wchar_t* src;
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register wchar_t* dest;
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bool isActive, isNoUnderline;
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if ( ! isVisible() )
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return;
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if ( text.isNull() || text.isEmpty() )
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return;
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length = text.getLength();
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hotkeypos = -1;
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try
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{
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LabelText = new wchar_t[length + 1]();
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}
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catch (const std::bad_alloc& ex)
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{
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std::cerr << "not enough memory to alloc " << ex.what() << std::endl;
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return;
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}
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txt = text;
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src = const_cast<wchar_t*>(txt.wc_str());
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dest = const_cast<wchar_t*>(LabelText);
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isActive = ((flags & fc::active) != 0);
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isNoUnderline = ((flags & fc::no_underline) != 0);
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// find hotkey position in string
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// + generate a new string without the '&'-sign
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for (i = 0; i < length; i++)
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{
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if ( i < length && txt[i] == '&' && hotkeypos == -1 )
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{
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hotkeypos = int(i);
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i++;
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src++;
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}
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*dest++ = *src++;
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}
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if ( hotkeypos != -1 )
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length--;
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setPrintPos (1 + label_offset_pos, 1);
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if ( isMonochron() )
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setReverse(true);
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if ( isEnabled() )
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setColor (wc.label_fg, wc.label_bg);
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else
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setColor (wc.label_inactive_fg, wc.label_inactive_bg);
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for (int z = 0; z < int(length); z++)
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{
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if ( (z == hotkeypos) && isActive )
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{
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setColor (wc.label_hotkey_fg, wc.label_hotkey_bg);
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if ( ! isNoUnderline )
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setUnderline();
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print ( LabelText[z] );
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if ( ! isNoUnderline )
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unsetUnderline();
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setColor (wc.label_fg, wc.label_bg);
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}
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else
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print (LabelText[z]);
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}
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if ( isMonochron() )
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setReverse(false);
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delete[] LabelText;
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}
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//----------------------------------------------------------------------
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void FToggleButton::processClick()
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{
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emitCallback("clicked");
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}
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//----------------------------------------------------------------------
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void FToggleButton::processToggle()
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{
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emitCallback("toggled");
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}
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//----------------------------------------------------------------------
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void FToggleButton::onKeyPress (FKeyEvent* ev)
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{
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int key;
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if ( ! isEnabled() )
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return;
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key = ev->key();
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switch ( key )
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{
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case fc::Fkey_return:
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case fc::Fkey_enter:
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case fc::Fkey_space:
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if ( isRadioButton() )
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{
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if ( ! checked )
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{
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checked = true;
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processToggle();
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}
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}
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else
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{
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checked = not checked;
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processToggle();
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}
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processClick();
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ev->accept();
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break;
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case fc::Fkey_down:
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case fc::Fkey_right:
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focus_inside_group = true;
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focusNextChild();
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ev->accept();
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break;
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case fc::Fkey_up:
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case fc::Fkey_left:
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focus_inside_group = true;
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focusPrevChild();
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ev->accept();
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break;
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default:
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break;
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}
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if ( ev->isAccepted() )
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{
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draw();
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updateTerminal();
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}
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}
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// private methods of FToggleButton
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//----------------------------------------------------------------------
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|
void FToggleButton::setGroup (FButtonGroup* btngroup)
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|
{
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|
button_group = btngroup;
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|
}
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|
|
|
//----------------------------------------------------------------------
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|
void FToggleButton::init()
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|
{
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|
setGeometry (1, 1, 4, 1, false); // initialize geometry values
|
|
|
|
if ( isEnabled() )
|
|
{
|
|
if ( hasFocus() )
|
|
{
|
|
setForegroundColor (wc.toggle_button_active_focus_fg);
|
|
setBackgroundColor (wc.toggle_button_active_focus_bg);
|
|
}
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|
else
|
|
{
|
|
setForegroundColor (wc.toggle_button_active_fg);
|
|
setBackgroundColor (wc.toggle_button_active_bg);
|
|
}
|
|
}
|
|
else // inactive
|
|
{
|
|
setForegroundColor (wc.label_inactive_fg);
|
|
setBackgroundColor (wc.label_inactive_bg);
|
|
}
|
|
}
|