574 lines
14 KiB
C++
574 lines
14 KiB
C++
/***********************************************************************
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* fbuttongroup.cpp - The FButtonGroup widget organizes FToggleButton *
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* widgets in a group. *
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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 2014-2019 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/fcolorpair.h"
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#include "final/fevent.h"
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#include "final/fsize.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 FButtonGroup
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//----------------------------------------------------------------------
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// constructor and destructor
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//----------------------------------------------------------------------
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FButtonGroup::FButtonGroup(FWidget* parent)
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: FScrollView(parent)
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{
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init();
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}
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//----------------------------------------------------------------------
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FButtonGroup::FButtonGroup (const FString& txt, FWidget* parent)
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: FScrollView(parent)
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, text{txt}
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{
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init();
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setText(txt);
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}
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//----------------------------------------------------------------------
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FButtonGroup::~FButtonGroup() // destructor
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{
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if ( buttonlist.empty() )
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return;
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auto iter = buttonlist.begin();
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while ( iter != buttonlist.end() )
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{
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auto toggle_button = static_cast<FToggleButton*>(*iter);
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toggle_button->setGroup(nullptr);
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iter = buttonlist.erase(iter);
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}
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}
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// public methods of FButtonGroup
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//----------------------------------------------------------------------
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FToggleButton* FButtonGroup::getButton (int index) const
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{
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if ( buttonlist.empty() )
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return 0;
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if ( index <= 0 || index > int(getCount()) )
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return 0;
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auto iter = buttonlist.begin();
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std::advance (iter, index - 1);
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return static_cast<FToggleButton*>(*iter);
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}
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//----------------------------------------------------------------------
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FToggleButton* FButtonGroup::getFirstButton()
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{
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auto widget = FWidget::getFirstFocusableWidget(buttonlist);
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auto toggle_button = static_cast<FToggleButton*>(widget);
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return toggle_button;
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}
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//----------------------------------------------------------------------
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FToggleButton* FButtonGroup::getLastButton()
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{
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auto widget = FWidget::getLastFocusableWidget(buttonlist);
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auto toggle_button = static_cast<FToggleButton*>(widget);
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return toggle_button;
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}
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//----------------------------------------------------------------------
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bool FButtonGroup::setEnable (bool enable)
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{
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FWidget::setEnable(enable);
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if ( enable )
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setHotkeyAccelerator();
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else
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delAccelerator();
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return enable;
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}
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//----------------------------------------------------------------------
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void FButtonGroup::setText (const FString& txt)
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{
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text.setString(txt);
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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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bool FButtonGroup::isChecked (int index) const
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{
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auto button = getButton(index);
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if ( button )
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return button->isChecked();
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else
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return false;
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}
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//----------------------------------------------------------------------
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bool FButtonGroup::hasFocusedButton() const
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{
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if ( buttonlist.empty() )
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return false;
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for (auto&& item : buttonlist)
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{
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auto toggle_button = static_cast<FToggleButton*>(item);
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if ( toggle_button->hasFocus() )
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return true;
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}
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return false;
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}
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//----------------------------------------------------------------------
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bool FButtonGroup::hasCheckedButton() const
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{
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if ( buttonlist.empty() )
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return false;
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for (auto&& item : buttonlist)
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{
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auto toggle_button = static_cast<FToggleButton*>(item);
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if ( toggle_button->isChecked() )
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return true;
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}
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return false;
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}
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//----------------------------------------------------------------------
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void FButtonGroup::hide()
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{
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FColor fg{}, bg{};
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FWidget::hide();
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auto parent_widget = getParentWidget();
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if ( ! buttonlist.empty() )
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{
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for (auto&& item : buttonlist)
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{
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// Hide items
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auto toggle_button = static_cast<FToggleButton*>(item);
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toggle_button->hide();
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}
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}
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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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const auto& wc = getFWidgetColors();
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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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std::size_t size = getWidth();
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if ( size == 0 )
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return;
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// Hide border
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unsetViewportPrint();
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for (int y{0}; y < int(getHeight()); y++)
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print() << FPoint(1, 1 + y) << FString(size, L' ');
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setViewportPrint();
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}
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//----------------------------------------------------------------------
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void FButtonGroup::insert (FToggleButton* button)
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{
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if ( ! button )
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return;
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if ( button->getGroup() )
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button->getGroup()->remove(button);
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// setChecked the first FRadioButton
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if ( buttonlist.size() == 1 )
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{
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auto first_button = static_cast<FToggleButton*>(*buttonlist.begin());
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if ( isRadioButton(first_button) )
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first_button->setChecked();
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}
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button->setGroup(this);
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buttonlist.push_back(button);
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button->addCallback
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(
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"toggled",
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F_METHOD_CALLBACK (this, &FButtonGroup::cb_buttonToggled)
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);
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}
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//----------------------------------------------------------------------
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void FButtonGroup::remove (FToggleButton* button)
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{
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if ( ! button || buttonlist.empty() )
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return;
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auto iter = buttonlist.begin();
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while ( iter != buttonlist.end() )
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{
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auto toggle_button = static_cast<FToggleButton*>(*iter);
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if ( toggle_button == button )
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{
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iter = buttonlist.erase(iter);
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button->setGroup(nullptr);
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button->delCallback(this);
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break;
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}
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else
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++iter;
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}
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}
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//----------------------------------------------------------------------
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void FButtonGroup::checkScrollSize (FToggleButton* button)
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{
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// Check and adjust the scroll size
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checkScrollSize (button->getGeometry());
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}
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//----------------------------------------------------------------------
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void FButtonGroup::checkScrollSize (const FRect& r)
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{
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// Check and adjust the scroll size
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FRect scrollgeometry (1, 1, getScrollWidth(), getScrollHeight());
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if ( ! scrollgeometry.contains(r) )
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{
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FRect r_combined (scrollgeometry.combined(r));
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setScrollSize (r_combined.getSize());
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}
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}
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//----------------------------------------------------------------------
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void FButtonGroup::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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directFocus();
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}
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//----------------------------------------------------------------------
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void FButtonGroup::onAccel (FAccelEvent*)
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{
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directFocus();
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}
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//----------------------------------------------------------------------
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void FButtonGroup::onFocusIn (FFocusEvent* in_ev)
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{
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in_ev->ignore(); // Change default value to ignore
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if ( hasCheckedButton() && ! buttonlist.empty() )
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{
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for (auto&& item : buttonlist)
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{
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auto toggle_button = static_cast<FToggleButton*>(item);
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if ( toggle_button->isChecked() )
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{
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if ( isRadioButton(toggle_button) )
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{
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auto prev_element = getFocusWidget();
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toggle_button->setFocus();
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FFocusEvent cfi (fc::ChildFocusIn_Event);
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FApplication::sendEvent(this, &cfi);
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FFocusEvent in (fc::FocusIn_Event);
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FApplication::sendEvent(toggle_button, &in);
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if ( in.isAccepted() )
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in_ev->accept();
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if ( prev_element )
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prev_element->redraw();
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toggle_button->redraw();
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}
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break;
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}
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} // end of range-based for loop
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}
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if ( ! in_ev->isAccepted() )
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{
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in_ev->accept();
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auto prev_element = getFocusWidget();
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if ( in_ev->getFocusType() == fc::FocusNextWidget )
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focusFirstChild();
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else if ( in_ev->getFocusType() == fc::FocusPreviousWidget )
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focusLastChild();
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if ( prev_element )
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prev_element->redraw();
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if ( getFocusWidget() )
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getFocusWidget()->redraw();
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}
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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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flushOutputBuffer();
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}
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}
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// protected methods of FButtonGroup
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//----------------------------------------------------------------------
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void FButtonGroup::setHotkeyAccelerator()
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{
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setHotkeyViaString (this, text);
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}
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//----------------------------------------------------------------------
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void FButtonGroup::draw()
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{
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if ( isMonochron() )
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setReverse(true);
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setColor();
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clearArea();
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if ( isMonochron() )
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setReverse(false);
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FScrollView::draw();
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drawLabel();
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}
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//----------------------------------------------------------------------
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void FButtonGroup::drawLabel()
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{
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if ( text.isNull() || text.isEmpty() )
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return;
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FString label_text{};
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FString txt{" " + text + " "};
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unsetViewportPrint();
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auto hotkeypos = finalcut::getHotkeyPos(txt, label_text);
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if ( hasBorder() )
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FWidget::setPrintPos (FPoint(2, 1));
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else
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FWidget::setPrintPos (FPoint(0, 1));
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drawText (label_text, hotkeypos);
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setViewportPrint();
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}
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// private methods of FButtonGroup
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//----------------------------------------------------------------------
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bool FButtonGroup::isRadioButton (const FToggleButton* button) const
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{
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if ( ! button )
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return false;
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return bool( button->getClassName() == "FRadioButton" );
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}
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//----------------------------------------------------------------------
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void FButtonGroup::init()
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{
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const auto& wc = getFWidgetColors();
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setForegroundColor (wc.label_fg);
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setBackgroundColor (wc.label_bg);
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setMinimumSize (FSize(7, 3));
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buttonlist.clear(); // no buttons yet
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}
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//----------------------------------------------------------------------
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void FButtonGroup::drawText ( const FString& label_text
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, std::size_t hotkeypos )
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{
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const auto& wc = getFWidgetColors();
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std::size_t column_width = getColumnWidth(label_text);
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std::size_t length = label_text.getLength();
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bool ellipsis{false};
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if ( column_width > getClientWidth() )
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{
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std::size_t len = getClientWidth() - 3;
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FString s = finalcut::getColumnSubString (label_text, 1, len);
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length = s.getLength();
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ellipsis = true;
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}
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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_emphasis_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 (std::size_t z{0}; z < length; z++)
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{
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if ( (z == hotkeypos) && getFlags().active )
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{
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setColor (wc.label_hotkey_fg, wc.label_hotkey_bg);
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if ( ! getFlags().no_underline )
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setUnderline();
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print (label_text[z]);
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if ( ! getFlags().no_underline )
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unsetUnderline();
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setColor (wc.label_emphasis_fg, wc.label_bg);
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}
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else
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print (label_text[z]);
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}
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if ( ellipsis ) // Print ellipsis
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print() << FColorPair (wc.label_ellipsis_fg, wc.label_bg) << "..";
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if ( isMonochron() )
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setReverse(true);
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}
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//----------------------------------------------------------------------
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void FButtonGroup::directFocus()
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{
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if ( ! hasFocusedButton() )
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{
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bool found_checked{false};
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if ( hasCheckedButton() && ! buttonlist.empty() )
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{
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for (auto&& item : buttonlist)
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{
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auto toggle_button = static_cast<FToggleButton*>(item);
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if ( toggle_button->isChecked() )
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{
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if ( isRadioButton(toggle_button) )
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{
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found_checked = true;
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auto focused_widget = getFocusWidget();
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toggle_button->setFocus();
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if ( focused_widget )
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focused_widget->redraw();
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focused_widget = getFocusWidget();
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if ( focused_widget )
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focused_widget->redraw();
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}
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break;
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}
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} // end of range-based for loop
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}
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if ( ! found_checked )
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{
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auto focused_widget = getFocusWidget();
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focusFirstChild();
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if ( focused_widget )
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focused_widget->redraw();
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focused_widget = getFocusWidget();
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if ( focused_widget )
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focused_widget->redraw();
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}
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}
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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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flushOutputBuffer();
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}
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}
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//----------------------------------------------------------------------
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void FButtonGroup::cb_buttonToggled (FWidget* widget, FDataPtr)
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{
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auto button = static_cast<FToggleButton*>(widget);
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if ( ! button->isChecked() )
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return;
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if ( buttonlist.empty() )
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return;
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for (auto&& item : buttonlist)
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{
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auto toggle_button = static_cast<FToggleButton*>(item);
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if ( toggle_button != button
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&& toggle_button->isChecked()
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&& isRadioButton(toggle_button) )
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{
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toggle_button->unsetChecked();
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if ( toggle_button->isShown() )
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toggle_button->redraw();
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}
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}
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}
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} // namespace finalcut
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