664 lines
15 KiB
C++
664 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 2014-2018 Markus Gans *
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* *
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* The Final Cut is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public License *
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* as published by the Free Software Foundation; either version 3 of *
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* the License, or (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 Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this program. If not, see *
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* <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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namespace finalcut
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{
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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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{
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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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{
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FToggleButton::setText(txt); // call own method
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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() // 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
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, std::size_t w, std::size_t h
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, bool adjust )
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{
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// Set the toggle button geometry
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std::size_t hotkey_mark = ( getHotkey() ) ? 1 : 0;
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std::size_t min_width = button_width + text.getLength() - hotkey_mark;
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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 enable)
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{
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return (flags.no_underline = enable);
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setEnable (bool enable)
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{
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FWidget::setEnable(enable);
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if ( enable )
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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 enable;
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setFocus (bool enable)
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{
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FWidget::setFocus(enable);
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if ( enable )
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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 auto& msg = getStatusbarMessage();
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const auto& 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 enable;
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}
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//----------------------------------------------------------------------
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bool FToggleButton::setChecked (bool enable)
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{
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if ( checked != enable )
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{
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checked = enable;
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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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std::size_t hotkey_mark = ( getHotkey() ) ? 1 : 0;
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setWidth(button_width + text.getLength() - hotkey_mark);
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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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std::size_t size;
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FColor fg, bg;
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auto 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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auto blank = createBlankArray(size + 1);
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setPrintPos (1, 1);
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print (blank);
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destroyBlankArray (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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auto focused_widget = getFocusWidget();
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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 = ! 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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auto 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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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 = ! 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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if ( text.isEmpty() )
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return 0;
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std::size_t length = text.getLength();
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for (std::size_t 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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uChar 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 (FKey(std::tolower(hotkey)));
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addAccelerator (FKey(std::toupper(hotkey)));
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// Meta + hotkey
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addAccelerator (fc::Fmkey_meta + FKey(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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if ( flags.focus && getStatusBar() )
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{
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const auto& msg = getStatusbarMessage();
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const auto& 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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wchar_t* LabelText;
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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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std::size_t length = text.getLength();
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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 << bad_alloc_str << ex.what() << std::endl;
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return;
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}
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FString txt = text;
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wchar_t* src = const_cast<wchar_t*>(txt.wc_str());
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wchar_t* dest = const_cast<wchar_t*>(LabelText);
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auto hotkeypos = getHotkeyPos(src, dest, length);
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if ( hotkeypos != NOT_SET )
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length--;
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setPrintPos (1 + int(label_offset_pos), 1);
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drawText (LabelText, hotkeypos, length);
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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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if ( ! isEnabled() )
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return;
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FKey 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 = ! 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
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if ( isEnabled() )
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{
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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 // inactive
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{
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setForegroundColor (wc.label_inactive_fg);
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setBackgroundColor (wc.label_inactive_bg);
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}
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}
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|
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//----------------------------------------------------------------------
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std::size_t FToggleButton::getHotkeyPos ( wchar_t src[]
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, wchar_t dest[]
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, std::size_t length )
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{
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// find hotkey position in string
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// + generate a new string without the '&'-sign
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std::size_t pos = NOT_SET;
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wchar_t* txt = src;
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|
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for (std::size_t i = 0; i < length; i++)
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{
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if ( i < length && txt[i] == L'&' && pos == NOT_SET )
|
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{
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pos = i;
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i++;
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src++;
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}
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|
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*dest++ = *src++;
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}
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return pos;
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}
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|
|
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//----------------------------------------------------------------------
|
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void FToggleButton::drawText ( wchar_t LabelText[]
|
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, std::size_t hotkeypos
|
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, std::size_t length )
|
|
{
|
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if ( isMonochron() )
|
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setReverse(true);
|
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|
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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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|
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for (std::size_t z = 0; z < length; z++)
|
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{
|
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if ( (z == hotkeypos) && flags.active )
|
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{
|
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setColor (wc.label_hotkey_fg, wc.label_hotkey_bg);
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|
|
if ( ! flags.no_underline )
|
|
setUnderline();
|
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|
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print ( LabelText[z] );
|
|
|
|
if ( ! flags.no_underline )
|
|
unsetUnderline();
|
|
|
|
setColor (wc.label_fg, wc.label_bg);
|
|
}
|
|
else
|
|
print (LabelText[z]);
|
|
}
|
|
|
|
if ( isMonochron() )
|
|
setReverse(false);
|
|
}
|
|
|
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} // namespace finalcut
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