790 lines
18 KiB
C++
790 lines
18 KiB
C++
/***********************************************************************
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* fbutton.cpp - Widget FButton *
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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 2012-2018 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/fbutton.h"
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#include "final/fstatusbar.h"
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namespace finalcut
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{
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//----------------------------------------------------------------------
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// class FButton
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//----------------------------------------------------------------------
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// constructors and destructor
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//----------------------------------------------------------------------
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FButton::FButton(FWidget* parent)
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: FWidget(parent)
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{
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init();
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}
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//----------------------------------------------------------------------
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FButton::FButton (const FString& txt, FWidget* parent)
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: FWidget(parent)
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, text{txt}
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{
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init();
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}
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//----------------------------------------------------------------------
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FButton::~FButton() // destructor
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{
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delAccelerator();
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delOwnTimer();
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}
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// public methods of FButton
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//----------------------------------------------------------------------
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void FButton::setForegroundColor (FColor color)
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{
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FWidget::setForegroundColor(color);
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updateButtonColor();
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}
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//----------------------------------------------------------------------
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void FButton::setBackgroundColor (FColor color)
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{
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FWidget::setBackgroundColor(color);
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updateButtonColor();
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}
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//----------------------------------------------------------------------
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void FButton::setHotkeyForegroundColor (FColor color)
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{
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// valid colors -1..254
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if ( color == fc::Default || color >> 8 == 0 )
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button_hotkey_fg = color;
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}
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//----------------------------------------------------------------------
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void FButton::setFocusForegroundColor (FColor color)
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{
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// valid colors -1..254
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if ( color == fc::Default || color >> 8 == 0 )
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button_focus_fg = color;
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updateButtonColor();
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}
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//----------------------------------------------------------------------
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void FButton::setFocusBackgroundColor (FColor color)
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{
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// valid colors -1..254
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if ( color == fc::Default || color >> 8 == 0 )
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button_focus_bg = color;
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updateButtonColor();
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}
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//----------------------------------------------------------------------
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void FButton::setInactiveForegroundColor (FColor color)
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{
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// valid colors -1..254
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if ( color == fc::Default || color >> 8 == 0 )
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button_inactive_fg = color;
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updateButtonColor();
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}
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//----------------------------------------------------------------------
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void FButton::setInactiveBackgroundColor (FColor color)
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{
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// valid colors -1..254
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if ( color == fc::Default || color >> 8 == 0 )
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button_inactive_bg = color;
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updateButtonColor();
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}
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//----------------------------------------------------------------------
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bool FButton::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 FButton::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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updateButtonColor();
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return enable;
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}
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//----------------------------------------------------------------------
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bool FButton::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 ( 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() && getStatusBar() )
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getStatusBar()->clearMessage();
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}
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updateButtonColor();
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return enable;
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}
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//----------------------------------------------------------------------
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bool FButton::setFlat (bool enable)
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{
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return (flags.flat = enable);
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}
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//----------------------------------------------------------------------
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bool FButton::setShadow (bool enable)
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{
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if ( enable
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&& getEncoding() != fc::VT100
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&& getEncoding() != fc::ASCII )
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{
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flags.shadow = true;
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setShadowSize(1, 1);
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}
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else
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{
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flags.shadow = false;
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setShadowSize(0, 0);
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}
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return flags.shadow;
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}
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//----------------------------------------------------------------------
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bool FButton::setDown (bool enable)
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{
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if ( button_down != enable )
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{
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button_down = enable;
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redraw();
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}
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return enable;
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}
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//----------------------------------------------------------------------
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void FButton::setText (const FString& txt)
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{
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if ( txt.isNull() )
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text = "";
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else
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text = txt;
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detectHotkey();
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}
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//----------------------------------------------------------------------
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void FButton::hide()
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{
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std::size_t s, f, 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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s = hasShadow() ? 1 : 0;
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f = isFlat() ? 1 : 0;
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size = getWidth() + s + (f << 1);
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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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for (std::size_t y = 0; y < getHeight() + s + (f << 1); y++)
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{
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setPrintPos (1 - int(f), 1 + int(y - f));
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print (blank);
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}
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destroyBlankArray (blank);
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}
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//----------------------------------------------------------------------
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void FButton::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 ( click_animation )
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{
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setDown();
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addTimer(click_time);
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}
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processClick();
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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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}
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//----------------------------------------------------------------------
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void FButton::onMouseDown (FMouseEvent* ev)
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{
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if ( ev->getButton() != fc::LeftButton )
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{
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setUp();
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return;
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}
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if ( ! hasFocus() )
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{
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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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if ( getStatusBar() )
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getStatusBar()->drawMessage();
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}
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FPoint tPos = ev->getTermPos();
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if ( getTermGeometry().contains(tPos) )
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setDown();
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}
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//----------------------------------------------------------------------
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void FButton::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 ( button_down )
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{
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setUp();
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if ( getTermGeometry().contains(ev->getTermPos()) )
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processClick();
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}
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}
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//----------------------------------------------------------------------
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void FButton::onMouseMove (FMouseEvent* ev)
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{
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if ( ev->getButton() != fc::LeftButton )
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return;
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FPoint tPos = ev->getTermPos();
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if ( click_animation )
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{
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if ( getTermGeometry().contains(tPos) )
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setDown();
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else
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setUp();
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}
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}
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//----------------------------------------------------------------------
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void FButton::onTimer (FTimerEvent* ev)
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{
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delTimer(ev->getTimerId());
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setUp();
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}
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//----------------------------------------------------------------------
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void FButton::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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if ( click_animation )
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setDown();
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else
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redraw();
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if ( getStatusBar() )
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getStatusBar()->drawMessage();
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}
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}
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else if ( click_animation )
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setDown();
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if ( click_animation )
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addTimer(click_time);
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processClick();
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ev->accept();
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}
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//----------------------------------------------------------------------
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void FButton::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 FButton::onFocusOut (FFocusEvent*)
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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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}
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// private methods of FButton
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//----------------------------------------------------------------------
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void FButton::init()
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{
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setForegroundColor (wc.button_active_fg);
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setBackgroundColor (wc.button_active_bg);
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setShadow();
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if ( ! text.isEmpty() )
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detectHotkey();
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}
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//----------------------------------------------------------------------
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uChar FButton::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 FButton::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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inline void FButton::detectHotkey()
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{
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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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std::size_t FButton::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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wchar_t* txt = src;
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std::size_t pos = NOT_SET;
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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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*dest++ = *src++;
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}
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return pos;
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}
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//----------------------------------------------------------------------
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inline std::size_t FButton::clickAnimationIndent (FWidget* parent_widget)
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{
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if ( ! button_down || ! click_animation )
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return 0;
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// noshadow + indent one character to the right
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if ( flags.flat )
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clearFlatBorder();
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else if ( hasShadow() )
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clearShadow();
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if ( parent_widget )
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setColor ( parent_widget->getForegroundColor()
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, parent_widget->getBackgroundColor() );
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for (std::size_t y = 1; y <= getHeight(); y++)
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{
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setPrintPos (1, int(y));
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print (' '); // clear one left █
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}
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return 1;
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}
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//----------------------------------------------------------------------
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inline void FButton::clearRightMargin (FWidget* parent_widget)
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{
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if ( button_down || isNewFont() )
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return;
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// Restore the right background after button down
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if ( parent_widget )
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setColor ( parent_widget->getForegroundColor()
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, parent_widget->getBackgroundColor() );
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for (int y = 1; y <= int(getHeight()); y++)
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{
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if ( isMonochron() )
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setReverse(true); // Light background
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setPrintPos (1 + int(getWidth()), y);
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print (' '); // clear right
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if ( flags.active && isMonochron() )
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setReverse(false); // Dark background
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}
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}
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//----------------------------------------------------------------------
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inline void FButton::drawMarginLeft()
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{
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// Print left margin
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setColor (getForegroundColor(), button_bg);
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for (std::size_t y = 0; y < getHeight(); y++)
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{
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setPrintPos (1 + int(indent), 1 + int(y));
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if ( isMonochron() && active_focus && y == vcenter_offset )
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print (fc::BlackRightPointingPointer); // ►
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else
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print (space_char); // full block █
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}
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}
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//----------------------------------------------------------------------
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inline void FButton::drawMarginRight()
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{
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// Print right margin
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for (std::size_t y = 0; y < getHeight(); y++)
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{
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setPrintPos (int(getWidth() + indent), 1 + int(y));
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if ( isMonochron() && active_focus && y == vcenter_offset )
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print (fc::BlackLeftPointingPointer); // ◄
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else
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print (space_char); // full block █
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}
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}
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//----------------------------------------------------------------------
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inline void FButton::drawTopBottomBackground()
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{
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// Print top and bottom button background
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if ( getHeight() < 2 )
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return;
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for (std::size_t y = 0; y < vcenter_offset; y++)
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{
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setPrintPos (2 + int(indent), 1 + int(y));
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for (std::size_t x = 1; x < getWidth() - 1; x++)
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print (space_char); // █
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}
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for (std::size_t y = vcenter_offset + 1; y < getHeight(); y++)
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{
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setPrintPos (2 + int(indent), 1 + int(y));
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for (std::size_t x = 1; x < getWidth() - 1; x++)
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print (space_char); // █
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}
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}
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//----------------------------------------------------------------------
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inline void FButton::drawButtonTextLine (wchar_t button_text[])
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{
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std::size_t pos;
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setPrintPos (2 + int(indent), 1 + int(vcenter_offset));
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setColor (button_fg, button_bg);
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if ( getWidth() < txtlength + 1 )
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center_offset = 0;
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else
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center_offset = (getWidth() - txtlength - 1) / 2;
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// Print button text line
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for (pos = 0; pos < center_offset; pos++)
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print (space_char); // █
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if ( hotkeypos == NOT_SET )
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setCursorPos ( 2 + int(center_offset)
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, 1 + int(vcenter_offset) ); // first character
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else
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setCursorPos ( 2 + int(center_offset + hotkeypos)
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, 1 + int(vcenter_offset) ); // hotkey
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if ( ! flags.active && isMonochron() )
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setReverse(true); // Light background
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if ( active_focus && (isMonochron() || getMaxColor() < 16) )
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setBold();
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for ( std::size_t z = 0
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; pos < center_offset + txtlength && z < getWidth() - 2
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; z++, pos++)
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{
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if ( z == hotkeypos && flags.active )
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{
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setColor (button_hotkey_fg, button_bg);
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if ( ! active_focus && getMaxColor() < 16 )
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setBold();
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if ( ! flags.no_underline )
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setUnderline();
|
|
|
|
print (button_text[z]);
|
|
|
|
if ( ! active_focus && getMaxColor() < 16 )
|
|
unsetBold();
|
|
|
|
if ( ! flags.no_underline )
|
|
unsetUnderline();
|
|
|
|
setColor (button_fg, button_bg);
|
|
}
|
|
else
|
|
{
|
|
print (button_text[z]);
|
|
}
|
|
}
|
|
|
|
if ( txtlength >= getWidth() - 1 )
|
|
{
|
|
// Print ellipsis
|
|
setPrintPos (int(getWidth() + indent) - 2, 1);
|
|
print (L"..");
|
|
}
|
|
|
|
if ( active_focus && (isMonochron() || getMaxColor() < 16) )
|
|
unsetBold();
|
|
|
|
for (pos = center_offset + txtlength; pos < getWidth() - 2; pos++)
|
|
print (space_char); // █
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FButton::draw()
|
|
{
|
|
wchar_t* button_text;
|
|
auto parent_widget = getParentWidget();
|
|
txtlength = text.getLength();
|
|
space_char = int(' ');
|
|
active_focus = flags.active && flags.focus;
|
|
|
|
try
|
|
{
|
|
button_text = new wchar_t[txtlength + 1]();
|
|
}
|
|
catch (const std::bad_alloc& ex)
|
|
{
|
|
std::cerr << bad_alloc_str << ex.what() << std::endl;
|
|
return;
|
|
}
|
|
|
|
if ( isMonochron() )
|
|
setReverse(true); // Light background
|
|
|
|
// Click animation preprocessing
|
|
indent = clickAnimationIndent (parent_widget);
|
|
|
|
// Clear right margin after animation
|
|
clearRightMargin (parent_widget);
|
|
|
|
if ( ! flags.active && isMonochron() )
|
|
space_char = fc::MediumShade; // ▒ simulates greyed out at Monochron
|
|
|
|
if ( isMonochron() && (flags.active || flags.focus) )
|
|
setReverse(false); // Dark background
|
|
|
|
if ( flags.flat && ! button_down )
|
|
drawFlatBorder();
|
|
|
|
hotkeypos = getHotkeyPos(text.wc_str(), button_text, uInt(txtlength));
|
|
|
|
if ( hotkeypos != NOT_SET )
|
|
txtlength--;
|
|
|
|
if ( getHeight() >= 2 )
|
|
vcenter_offset = (getHeight() - 1) / 2;
|
|
else
|
|
vcenter_offset = 0;
|
|
|
|
// Print left margin
|
|
drawMarginLeft();
|
|
|
|
// Print button text line
|
|
drawButtonTextLine(button_text);
|
|
|
|
// Print right margin
|
|
drawMarginRight();
|
|
|
|
// Print top and bottom button background
|
|
drawTopBottomBackground();
|
|
|
|
// Draw button shadow
|
|
if ( ! flags.flat && flags.shadow && ! button_down )
|
|
drawShadow();
|
|
|
|
if ( isMonochron() )
|
|
setReverse(false); // Dark background
|
|
|
|
delete[] button_text;
|
|
updateStatusBar();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FButton::updateStatusBar()
|
|
{
|
|
if ( ! flags.focus || ! getStatusBar() )
|
|
return;
|
|
|
|
const FString& msg = getStatusbarMessage();
|
|
const FString& curMsg = getStatusBar()->getMessage();
|
|
|
|
if ( curMsg != msg )
|
|
{
|
|
getStatusBar()->setMessage(msg);
|
|
getStatusBar()->drawMessage();
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FButton::updateButtonColor()
|
|
{
|
|
if ( isEnabled() )
|
|
{
|
|
if ( hasFocus() )
|
|
{
|
|
button_fg = button_focus_fg;
|
|
button_bg = button_focus_bg;
|
|
}
|
|
else
|
|
{
|
|
button_fg = getForegroundColor();
|
|
button_bg = getBackgroundColor();
|
|
}
|
|
}
|
|
else // inactive
|
|
{
|
|
button_fg = button_inactive_fg;
|
|
button_bg = button_inactive_bg;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FButton::processClick()
|
|
{
|
|
emitCallback("clicked");
|
|
}
|
|
|
|
} // namespace finalcut
|