275 lines
7.9 KiB
C++
275 lines
7.9 KiB
C++
/***********************************************************************
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* scrollview.cpp - Shows client widgets in a scroll area *
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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 2017-2018 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/final.h>
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//----------------------------------------------------------------------
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// class Scrollview
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//----------------------------------------------------------------------
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#pragma pack(push)
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#pragma pack(1)
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class Scrollview : public finalcut::FScrollView
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{
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public:
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// Constructor
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explicit Scrollview (finalcut::FWidget* = nullptr);
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// Disable copy constructor
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Scrollview (const Scrollview&) = delete;
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// Destructor
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~Scrollview ();
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// Disable assignment operator (=)
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Scrollview& operator = (const Scrollview&) = delete;
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// Mutator
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void setScrollSize (std::size_t, std::size_t);
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private:
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// Method
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virtual void draw() override;
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// Callback methods
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void cb_go_east (finalcut::FWidget*, FDataPtr);
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void cb_go_south (finalcut::FWidget*, FDataPtr);
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void cb_go_west (finalcut::FWidget*, FDataPtr);
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void cb_go_north (finalcut::FWidget*, FDataPtr);
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// Data Members
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wchar_t pointer_right{finalcut::fc::BlackRightPointingPointer};
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wchar_t pointer_down{finalcut::fc::BlackDownPointingTriangle};
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wchar_t pointer_left{finalcut::fc::BlackLeftPointingPointer};
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wchar_t pointer_up{finalcut::fc::BlackUpPointingTriangle};
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finalcut::FButton go_east{pointer_right, this};
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finalcut::FButton go_south{pointer_down, this};
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finalcut::FButton go_west{pointer_left, this};
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finalcut::FButton go_north{pointer_up, this};
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};
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#pragma pack(pop)
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//----------------------------------------------------------------------
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Scrollview::Scrollview (finalcut::FWidget* parent)
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: finalcut::FScrollView(parent)
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{
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// Sets the navigation button geometry
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go_east.setGeometry (1, 1, 5, 1);
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go_south.setGeometry (int(getScrollWidth()) - 5, 1, 5, 1);
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go_west.setGeometry ( int(getScrollWidth()) - 5
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, int(getScrollHeight()) - 2, 5, 1);
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go_north.setGeometry (1, int(getScrollHeight()) - 2, 5, 1);
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// Add scroll function callbacks to the buttons
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go_east.addCallback
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(
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"clicked",
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F_METHOD_CALLBACK (this, &Scrollview::cb_go_east)
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);
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go_south.addCallback
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(
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"clicked",
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F_METHOD_CALLBACK (this, &Scrollview::cb_go_south)
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);
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go_west.addCallback
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(
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"clicked",
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F_METHOD_CALLBACK (this, &Scrollview::cb_go_west)
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);
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go_north.addCallback
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(
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"clicked",
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F_METHOD_CALLBACK (this, &Scrollview::cb_go_north)
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);
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}
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//----------------------------------------------------------------------
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Scrollview::~Scrollview()
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{ }
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//----------------------------------------------------------------------
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void Scrollview::setScrollSize (std::size_t width, std::size_t height)
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{
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FScrollView::setScrollSize (width, height);
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go_south.setPos (int(width) - 5, 1);
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go_west.setPos (int(width) - 5, int(height) - 1);
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go_north.setPos (1, int(height) - 1);
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}
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//----------------------------------------------------------------------
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void Scrollview::draw()
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{
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if ( isMonochron() )
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setReverse(true);
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setColor (wc.label_inactive_fg, wc.dialog_bg);
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clearArea();
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for (int y = 0; y < int(getScrollHeight()); y++)
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{
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setPrintPos (1, 1 + y);
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for (int x = 0; x < int(getScrollWidth()); x++)
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print (32 + ((x + y) % 0x5f));
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}
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if ( isMonochron() )
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setReverse(false);
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FScrollView::draw();
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}
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//----------------------------------------------------------------------
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void Scrollview::cb_go_east (finalcut::FWidget*, FDataPtr)
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{
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scrollToX (int(getScrollWidth() - getViewportWidth()) + 1);
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go_south.setFocus();
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go_east.redraw();
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go_south.redraw();
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}
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//----------------------------------------------------------------------
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void Scrollview::cb_go_south (finalcut::FWidget*, FDataPtr)
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{
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scrollToY (int(getScrollHeight() - getViewportHeight()) + 1);
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go_west.setFocus();
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go_south.redraw();
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go_west.redraw();
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}
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//----------------------------------------------------------------------
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void Scrollview::cb_go_west (finalcut::FWidget*, FDataPtr)
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{
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scrollToX (1);
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go_north.setFocus();
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go_west.redraw();
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go_north.redraw();
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}
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//----------------------------------------------------------------------
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void Scrollview::cb_go_north (finalcut::FWidget*, FDataPtr)
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{
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scrollToY (1);
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go_east.setFocus();
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go_north.redraw();
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go_east.redraw();
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}
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//----------------------------------------------------------------------
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// class Scrollviewdemo
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//----------------------------------------------------------------------
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#pragma pack(push)
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#pragma pack(1)
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class Scrollviewdemo : public finalcut::FDialog
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{
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public:
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// Constructor
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explicit Scrollviewdemo (finalcut::FWidget* = nullptr);
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// Destructor
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~Scrollviewdemo();
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// Event handler
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virtual void onClose (finalcut::FCloseEvent*) override;
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// Callback method
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void cb_quit (finalcut::FWidget* = nullptr, FDataPtr = nullptr);
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// Data Members
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Scrollview sview{this};
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finalcut::FButton quit_btn{"&Quit", this};
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finalcut::FLabel label{this};
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};
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#pragma pack(pop)
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//----------------------------------------------------------------------
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Scrollviewdemo::Scrollviewdemo (finalcut::FWidget* parent)
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: finalcut::FDialog(parent)
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{
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setGeometry (16, 3, 50, 19);
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setText ("Scrolling viewport example");
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// The scrolling viewport widget
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sview.setGeometry(3, 2, 44, 12);
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sview.setScrollSize(188, 124);
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// Quit button
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quit_btn.setGeometry(37, 15, 10, 1);
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// Add function callback
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quit_btn.addCallback
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(
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"clicked",
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F_METHOD_CALLBACK (this, &Scrollviewdemo::cb_quit)
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);
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// Text label
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label.setGeometry(2, 1, 46, 1);
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label.setEmphasis();
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label << L"Use scrollbars to change the viewport position";
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}
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//----------------------------------------------------------------------
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Scrollviewdemo::~Scrollviewdemo()
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{ }
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//----------------------------------------------------------------------
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void Scrollviewdemo::cb_quit (finalcut::FWidget*, FDataPtr)
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{
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close();
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}
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//----------------------------------------------------------------------
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void Scrollviewdemo::onClose (finalcut::FCloseEvent* ev)
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{
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finalcut::FApplication::closeConfirmationDialog (this, ev);
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}
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//----------------------------------------------------------------------
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// main part
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//----------------------------------------------------------------------
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int main (int argc, char* argv[])
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{
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// Create the application object
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finalcut::FApplication app(argc, argv);
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// Create a simple dialog box
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Scrollviewdemo svdemo(&app);
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// Set dialog main_dlg as main widget
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app.setMainWidget(&svdemo);
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// Show and start the application
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svdemo.show();
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return app.exec();
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}
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