1194 lines
29 KiB
C++
1194 lines
29 KiB
C++
/************************************************************************
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* fscrollview.cpp - Widget FScrollView (a scrolling area with on-demand *
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* scroll bars) *
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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 Markus Gans *
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* *
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* The Final Cut is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* The Final Cut is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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************************************************************************/
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#include "final/fscrollview.h"
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#include "final/fwindow.h"
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//----------------------------------------------------------------------
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// class FScrollView
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//----------------------------------------------------------------------
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// constructors and destructor
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//----------------------------------------------------------------------
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FScrollView::FScrollView (FWidget* parent)
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: FWidget(parent)
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, scroll_geometry(1, 1, 1, 1)
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, viewport_geometry()
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, viewport(0)
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, vbar(0)
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, hbar(0)
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, nf_offset(0)
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, border(true)
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, use_own_print_area(false)
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, vMode(fc::Auto)
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, hMode(fc::Auto)
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{
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init(parent);
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}
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//----------------------------------------------------------------------
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FScrollView::~FScrollView() // destructor
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{
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delete vbar;
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delete hbar;
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removeArea (viewport);
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child_print_area = viewport = 0;
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}
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// public methods of FScrollView
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//----------------------------------------------------------------------
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void FScrollView::setScrollWidth (int width)
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{
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if ( width < getViewportWidth() )
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width = getViewportWidth();
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if ( getScrollWidth() == width )
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return;
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if ( viewport )
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{
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FPoint no_shadow(0,0);
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scroll_geometry.setWidth (width);
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resizeArea (scroll_geometry, no_shadow, viewport);
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addPreprocessingHandler
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(
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F_PREPROC_HANDLER (this, &FScrollView::copy2area)
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);
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child_print_area = viewport;
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}
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hbar->setMaximum (width - getViewportWidth());
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hbar->setPageSize (width, getViewportWidth());
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hbar->calculateSliderValues();
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setHorizontalScrollBarVisibility();
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}
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//----------------------------------------------------------------------
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void FScrollView::setScrollHeight (int height)
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{
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if ( height < getViewportHeight() )
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height = getViewportHeight();
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if ( getScrollHeight() == height )
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return;
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if ( viewport )
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{
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FPoint no_shadow(0,0);
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scroll_geometry.setHeight (height);
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resizeArea (scroll_geometry, no_shadow, viewport);
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addPreprocessingHandler
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(
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F_PREPROC_HANDLER (this, &FScrollView::copy2area)
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);
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child_print_area = viewport;
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}
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vbar->setMaximum (height - getViewportHeight());
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vbar->setPageSize (height, getViewportHeight());
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vbar->calculateSliderValues();
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setVerticalScrollBarVisibility();
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}
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//----------------------------------------------------------------------
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void FScrollView::setScrollSize (int width, int height)
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{
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int xoffset_end
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, yoffset_end;
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if ( width < getViewportWidth() )
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width = getViewportWidth();
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if ( height < getViewportHeight() )
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height = getViewportHeight();
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if ( getScrollWidth() == width && getScrollHeight() == height )
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return;
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if ( viewport )
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{
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FPoint no_shadow(0,0);
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scroll_geometry.setSize (width, height);
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resizeArea (scroll_geometry, no_shadow, viewport);
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addPreprocessingHandler
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(
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F_PREPROC_HANDLER (this, &FScrollView::copy2area)
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);
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child_print_area = viewport;
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}
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xoffset_end = getScrollWidth() - getViewportWidth();
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yoffset_end = getScrollHeight() - getViewportHeight();
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setTopPadding (1 - getScrollY());
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setLeftPadding (1 - getScrollX());
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setBottomPadding (1 - (yoffset_end - getScrollY()));
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setRightPadding (1 - (xoffset_end - getScrollX()) + nf_offset);
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hbar->setMaximum (width - getViewportWidth());
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hbar->setPageSize (width, getViewportWidth());
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hbar->calculateSliderValues();
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setHorizontalScrollBarVisibility();
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vbar->setMaximum (height - getViewportHeight());
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vbar->setPageSize (height, getViewportHeight());
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vbar->calculateSliderValues();
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setVerticalScrollBarVisibility();
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}
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//----------------------------------------------------------------------
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void FScrollView::setX (int x, bool adjust)
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{
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FWidget::setX (x, adjust);
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if ( ! adjust )
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{
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scroll_geometry.setX (getTermX() + getLeftPadding() - 1);
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if ( viewport )
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{
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viewport->offset_left = scroll_geometry.getX();
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viewport->offset_top = scroll_geometry.getY();
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}
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}
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}
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//----------------------------------------------------------------------
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void FScrollView::setY (int y, bool adjust)
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{
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FWidget::setY (y, adjust);
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if ( ! adjust )
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{
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scroll_geometry.setY (getTermY() + getTopPadding() - 1);
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if ( viewport )
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{
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viewport->offset_left = scroll_geometry.getX();
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viewport->offset_top = scroll_geometry.getY();
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}
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}
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}
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//----------------------------------------------------------------------
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void FScrollView::setPos (int x, int y, bool adjust)
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{
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FWidget::setPos (x, y, adjust);
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scroll_geometry.setPos ( getTermX() + getLeftPadding() - 1
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, getTermY() + getTopPadding() - 1 );
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if ( ! adjust )
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{
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if ( viewport )
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{
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viewport->offset_left = scroll_geometry.getX();
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viewport->offset_top = scroll_geometry.getY();
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}
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}
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}
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//----------------------------------------------------------------------
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void FScrollView::setWidth (int w, bool adjust)
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{
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FWidget::setWidth (w, adjust);
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viewport_geometry.setWidth(w - vertical_border_spacing - nf_offset);
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calculateScrollbarPos();
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if ( getScrollWidth() < getViewportWidth() )
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setScrollWidth (getViewportWidth());
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}
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//----------------------------------------------------------------------
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void FScrollView::setHeight (int h, bool adjust)
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{
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FWidget::setHeight (h, adjust);
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viewport_geometry.setHeight(h - horizontal_border_spacing);
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calculateScrollbarPos();
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if ( getScrollHeight() < getViewportHeight() )
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setScrollHeight (getViewportHeight());
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}
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//----------------------------------------------------------------------
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void FScrollView::setSize (int w, int h, bool adjust)
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{
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FWidget::setSize (w, h, adjust);
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viewport_geometry.setSize ( w - vertical_border_spacing - nf_offset
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, h - horizontal_border_spacing );
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calculateScrollbarPos();
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if ( getScrollWidth() < getViewportWidth()
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|| getScrollHeight() < getViewportHeight() )
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setScrollSize (getViewportWidth(), getViewportHeight());
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}
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//----------------------------------------------------------------------
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void FScrollView::setGeometry (int x, int y, int w, int h, bool adjust)
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{
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// Set the scroll view geometry
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FWidget::setGeometry (x, y, w, h, adjust);
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scroll_geometry.setPos ( getTermX() + getLeftPadding() - 1
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, getTermY() + getTopPadding() - 1 );
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viewport_geometry.setSize ( w - vertical_border_spacing - nf_offset
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, h - horizontal_border_spacing );
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calculateScrollbarPos();
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if ( getScrollWidth() < getViewportWidth()
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|| getScrollHeight() < getViewportHeight() )
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{
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setScrollSize (getViewportWidth(), getViewportHeight());
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}
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else if ( ! adjust && viewport )
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{
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viewport->offset_left = scroll_geometry.getX();
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viewport->offset_top = scroll_geometry.getY();
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}
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}
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//----------------------------------------------------------------------
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void FScrollView::setCursorPos (register int x, register int y)
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{
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FWidget::setCursorPos (x + getLeftPadding(), y + getTopPadding());
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}
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//----------------------------------------------------------------------
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void FScrollView::setPrintPos (register int x, register int y)
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{
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FWidget::setPrintPos (x + getLeftPadding(), y + getTopPadding());
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}
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//----------------------------------------------------------------------
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bool FScrollView::setViewportPrint (bool on)
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{
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return use_own_print_area = ! on;
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}
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//----------------------------------------------------------------------
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bool FScrollView::setBorder (bool on)
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{
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return border = on;
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}
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//----------------------------------------------------------------------
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void FScrollView::setHorizontalScrollBarMode (fc::scrollBarMode mode)
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{
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hMode = mode;
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setHorizontalScrollBarVisibility();
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}
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//----------------------------------------------------------------------
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void FScrollView::setVerticalScrollBarMode (fc::scrollBarMode mode)
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{
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vMode = mode;
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setVerticalScrollBarVisibility();
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}
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//----------------------------------------------------------------------
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void FScrollView::clearArea (int fillchar)
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{
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if ( viewport )
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clearArea (viewport, fillchar);
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}
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//----------------------------------------------------------------------
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void FScrollView::scrollToX (int x)
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{
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scrollTo (x, viewport_geometry.getY() + 1);
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}
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//----------------------------------------------------------------------
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void FScrollView::scrollToY (int y)
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{
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scrollTo (viewport_geometry.getX() + 1, y);
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}
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//----------------------------------------------------------------------
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void FScrollView::scrollTo (int x, int y)
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{
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short& xoffset = viewport_geometry.x1_ref();
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short& yoffset = viewport_geometry.y1_ref();
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short xoffset_end = short(getScrollWidth() - getViewportWidth());
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short yoffset_end = short(getScrollHeight() - getViewportHeight());
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int save_width = viewport_geometry.getWidth();
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int save_height = viewport_geometry.getHeight();
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x--;
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y--;
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if ( xoffset == short(x) && yoffset == short(y) )
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return;
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xoffset = short(x);
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yoffset = short(y);
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if ( yoffset < 0 )
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yoffset = 0;
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if ( yoffset > yoffset_end )
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yoffset = yoffset_end;
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if ( xoffset < 0 )
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xoffset = 0;
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if ( xoffset > xoffset_end )
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xoffset = xoffset_end;
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viewport_geometry.setWidth(save_width);
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viewport_geometry.setHeight(save_height);
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viewport->has_changes = true;
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setTopPadding (1 - yoffset);
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setLeftPadding (1 - xoffset);
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setBottomPadding (1 - (yoffset_end - yoffset));
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setRightPadding (1 - (xoffset_end - xoffset) + nf_offset);
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copy2area();
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hbar->setValue (xoffset);
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vbar->setValue (yoffset);
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drawHBar();
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drawVBar();
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updateTerminal();
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}
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//----------------------------------------------------------------------
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void FScrollView::scrollBy (int dx, int dy)
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{
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scrollTo (getScrollX() + dx, getScrollY() + dy);
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}
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//----------------------------------------------------------------------
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void FScrollView::draw()
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{
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unsetViewportPrint();
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if ( isMonochron() )
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setReverse(true);
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if ( FWidget* p = getParentWidget() )
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setColor (p->getForegroundColor(), p->getBackgroundColor());
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else
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setColor();
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if ( border )
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{
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if ( isNewFont() )
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drawBorder (1, 1, getWidth() - 1, getHeight());
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else
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drawBorder();
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}
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if ( isMonochron() )
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setReverse(false);
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setViewportPrint();
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copy2area();
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redrawVBar();
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redrawHBar();
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}
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//----------------------------------------------------------------------
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void FScrollView::onKeyPress (FKeyEvent* ev)
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{
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int key = ev->key();
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short& xoffset = viewport_geometry.x1_ref();
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short& yoffset = viewport_geometry.y1_ref();
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short xoffset_before = xoffset;
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short yoffset_before = yoffset;
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short xoffset_end = short(getScrollWidth() - getViewportWidth());
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short yoffset_end = short(getScrollHeight() - getViewportHeight());
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int save_width = viewport_geometry.getWidth();
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int save_height = viewport_geometry.getHeight();
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switch ( key )
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{
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case fc::Fkey_up:
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if ( yoffset > 0 )
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yoffset--;
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ev->accept();
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break;
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case fc::Fkey_down:
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if ( yoffset < yoffset_end )
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yoffset++;
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ev->accept();
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break;
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case fc::Fkey_left:
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if ( xoffset > 0 )
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xoffset--;
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ev->accept();
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break;
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case fc::Fkey_right:
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if ( xoffset < xoffset_end )
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xoffset++;
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ev->accept();
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break;
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case fc::Fkey_ppage:
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yoffset -= getViewportHeight();
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if ( yoffset < 0 )
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yoffset = 0;
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ev->accept();
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break;
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case fc::Fkey_npage:
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yoffset += getViewportHeight();
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if ( yoffset > yoffset_end )
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yoffset = yoffset_end;
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ev->accept();
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break;
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case fc::Fkey_home:
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yoffset = 0;
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ev->accept();
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break;
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case fc::Fkey_end:
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yoffset = yoffset_end;
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ev->accept();
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break;
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default:
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break;
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}
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if ( ev->isAccepted() )
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{
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bool hasChanges = false;
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if ( isVisible() && viewport
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&& (xoffset_before != xoffset || yoffset_before != yoffset) )
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{
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viewport_geometry.setWidth(save_width);
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viewport_geometry.setHeight(save_height);
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viewport->has_changes = true;
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setTopPadding (1 - yoffset);
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setLeftPadding (1 - xoffset);
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setBottomPadding (1 - (yoffset_end - yoffset));
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setRightPadding (1 - (xoffset_end - xoffset) + nf_offset);
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copy2area();
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hasChanges = true;
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vbar->setValue (yoffset);
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hbar->setValue (xoffset);
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drawVBar();
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drawHBar();
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}
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if ( hasChanges )
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updateTerminal();
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}
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}
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//----------------------------------------------------------------------
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void FScrollView::onWheel (FWheelEvent* ev)
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{
|
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bool hasChanges = false;
|
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short& yoffset = viewport_geometry.y1_ref();
|
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short yoffset_before = yoffset;
|
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short yoffset_end = short(getScrollHeight() - getViewportHeight());
|
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int save_height = viewport_geometry.getHeight();
|
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int wheel = ev->getWheel();
|
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|
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switch ( wheel )
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{
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case fc::WheelUp:
|
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if ( yoffset == 0 )
|
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break;
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yoffset -= 4;
|
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|
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if ( yoffset < 0 )
|
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yoffset = 0;
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|
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break;
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|
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case fc::WheelDown:
|
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{
|
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if ( yoffset_end < 0 )
|
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yoffset_end = 0;
|
|
|
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if ( yoffset == yoffset_end )
|
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break;
|
|
|
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yoffset += 4;
|
|
|
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if ( yoffset > yoffset_end )
|
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yoffset = yoffset_end;
|
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}
|
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break;
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|
|
default:
|
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break;
|
|
}
|
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|
|
if ( isVisible() && viewport && yoffset_before != yoffset )
|
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{
|
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viewport_geometry.setHeight(save_height);
|
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viewport->has_changes = true;
|
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setTopPadding (1 - yoffset);
|
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setBottomPadding (1 - (yoffset_end - yoffset));
|
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copy2area();
|
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hasChanges = true;
|
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vbar->setValue (yoffset);
|
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drawVBar();
|
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}
|
|
|
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if ( hasChanges )
|
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updateTerminal();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::onFocusIn (FFocusEvent* in_ev)
|
|
{
|
|
// Sets the focus to a child widget if it exists
|
|
|
|
if ( hasChildren() )
|
|
{
|
|
FWidget* prev_element = getFocusWidget();
|
|
|
|
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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|
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if ( prev_element )
|
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prev_element->redraw();
|
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|
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if ( getFocusWidget() )
|
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getFocusWidget()->redraw();
|
|
|
|
FFocusEvent cfi (fc::ChildFocusIn_Event);
|
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onChildFocusIn(&cfi);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::onChildFocusIn (FFocusEvent*)
|
|
{
|
|
// Scrolls the viewport so that the focused widget is visible
|
|
|
|
FRect widget_geometry;
|
|
FRect vp_geometry;
|
|
FWidget* focus_widget = FWidget::getFocusWidget();
|
|
|
|
if ( ! focus_widget )
|
|
return;
|
|
|
|
widget_geometry = focus_widget->getGeometryWithShadow();
|
|
vp_geometry = viewport_geometry;
|
|
vp_geometry.move(1,1);
|
|
|
|
if ( ! vp_geometry.contains(widget_geometry) )
|
|
{
|
|
int x
|
|
, y
|
|
, vx = vp_geometry.getX()
|
|
, vy = vp_geometry.getY()
|
|
, wx = widget_geometry.getX()
|
|
, wy = widget_geometry.getY();
|
|
|
|
if ( wx > vx )
|
|
x = widget_geometry.getX2() - vp_geometry.getWidth() + 1;
|
|
else
|
|
x = wx;
|
|
|
|
if ( wy > vy )
|
|
y = widget_geometry.getY2() - vp_geometry.getHeight() + 1;
|
|
else
|
|
y = wy;
|
|
|
|
scrollTo (x, y);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::onChildFocusOut (FFocusEvent* out_ev)
|
|
{
|
|
// Change the focus away from FScrollView to another widget
|
|
|
|
FWidget* focus_widget = FWidget::getFocusWidget();
|
|
|
|
if ( out_ev->getFocusType() == fc::FocusNextWidget )
|
|
{
|
|
FWidget* last_widget = getLastFocusableWidget(getChildren());
|
|
|
|
if ( focus_widget == last_widget )
|
|
{
|
|
out_ev->accept();
|
|
focusNextChild();
|
|
}
|
|
}
|
|
else if ( out_ev->getFocusType() == fc::FocusPreviousWidget )
|
|
{
|
|
FWidget* first_widget = getFirstFocusableWidget(getChildren());
|
|
|
|
if ( focus_widget == first_widget )
|
|
{
|
|
out_ev->accept();
|
|
focusPrevChild();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// protected methods of FScrollView
|
|
//----------------------------------------------------------------------
|
|
FVTerm::term_area* FScrollView::getPrintArea()
|
|
{
|
|
// returns print area or viewport
|
|
|
|
if ( use_own_print_area || ! viewport )
|
|
{
|
|
child_print_area = 0;
|
|
term_area* area = FVTerm::getPrintArea();
|
|
child_print_area = viewport;
|
|
return area;
|
|
}
|
|
else
|
|
return viewport;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::adjustSize()
|
|
{
|
|
FWidget::adjustSize();
|
|
int width = getWidth()
|
|
, height = getHeight()
|
|
, xoffset = viewport_geometry.getX()
|
|
, yoffset = viewport_geometry.getY();
|
|
|
|
scroll_geometry.setPos ( getTermX() + getLeftPadding() - 1
|
|
, getTermY() + getTopPadding() - 1 );
|
|
|
|
if ( viewport )
|
|
{
|
|
viewport->offset_left = scroll_geometry.getX();
|
|
viewport->offset_top = scroll_geometry.getY();
|
|
}
|
|
|
|
hbar->setMaximum (getScrollWidth() - getViewportWidth());
|
|
hbar->setPageSize (getScrollWidth(), getViewportWidth());
|
|
hbar->setY (height);
|
|
hbar->setWidth (width - 2, false);
|
|
hbar->setValue (xoffset);
|
|
hbar->resize();
|
|
setHorizontalScrollBarVisibility();
|
|
|
|
vbar->setMaximum (getScrollHeight() - getViewportHeight());
|
|
vbar->setPageSize (getScrollHeight(), getViewportHeight());
|
|
vbar->setX (width);
|
|
vbar->setHeight (height - 2, false);
|
|
vbar->setValue (yoffset);
|
|
vbar->resize();
|
|
setVerticalScrollBarVisibility();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::copy2area()
|
|
{
|
|
// copy viewport to area
|
|
|
|
if ( ! hasPrintArea() )
|
|
FVTerm::getPrintArea();
|
|
|
|
if ( ! (hasPrintArea() && viewport) )
|
|
return;
|
|
|
|
if ( ! viewport->has_changes )
|
|
return;
|
|
|
|
int ax = getTermX() - print_area->offset_left
|
|
, ay = getTermY() - print_area->offset_top
|
|
, dx = viewport_geometry.getX()
|
|
, dy = viewport_geometry.getY()
|
|
, y_end = getViewportHeight()
|
|
, x_end = getViewportWidth();
|
|
|
|
// viewport width does not fit into the print_area
|
|
if ( print_area->width <= ax + x_end )
|
|
x_end = print_area->width - ax;
|
|
|
|
// viewport height does not fit into the print_area
|
|
if ( print_area->height <= ay + y_end )
|
|
y_end = print_area->height - ay;
|
|
|
|
for (int y = 0; y < y_end; y++) // line loop
|
|
{
|
|
char_data* vc; // viewport character
|
|
char_data* ac; // area character
|
|
int v_line_len = viewport->width;
|
|
int a_line_len = print_area->width + print_area->right_shadow;
|
|
vc = &viewport->text[(dy + y) * v_line_len + dx];
|
|
ac = &print_area->text[(ay + y) * a_line_len + ax];
|
|
std::memcpy (ac, vc, sizeof(char_data) * unsigned(x_end));
|
|
|
|
if ( short(print_area->changes[ay + y].xmin) > ax )
|
|
print_area->changes[ay + y].xmin = uInt(ax);
|
|
|
|
if ( short(print_area->changes[ay + y].xmax) < ax + x_end - 1 )
|
|
print_area->changes[ay + y].xmax = uInt(ax + x_end - 1);
|
|
}
|
|
|
|
setViewportCursor();
|
|
viewport->has_changes = false;
|
|
print_area->has_changes = true;
|
|
}
|
|
|
|
|
|
// private methods of FScrollView
|
|
//----------------------------------------------------------------------
|
|
inline FPoint FScrollView::getViewportCursorPos()
|
|
{
|
|
FWidget* window = FWindow::getWindowWidget(this);
|
|
|
|
if ( window )
|
|
{
|
|
int widget_offsetX = getTermX() - window->getTermX()
|
|
, widget_offsetY = getTermY() - window->getTermY()
|
|
, x = widget_offsetX + viewport->input_cursor_x
|
|
- viewport_geometry.getX()
|
|
, y = widget_offsetY + viewport->input_cursor_y
|
|
- viewport_geometry.getY();
|
|
return FPoint (x, y);
|
|
}
|
|
else
|
|
return FPoint (-1, -1);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::init (FWidget* parent)
|
|
{
|
|
int xoffset_end
|
|
, yoffset_end;
|
|
|
|
assert ( parent != 0 );
|
|
assert ( ! parent->isInstanceOf("FScrollView") );
|
|
|
|
setForegroundColor (wc.dialog_fg);
|
|
setBackgroundColor (wc.dialog_bg);
|
|
|
|
try
|
|
{
|
|
vbar = new FScrollbar(fc::vertical, this);
|
|
vbar->setMinimum(0);
|
|
vbar->setValue(0);
|
|
vbar->hide();
|
|
|
|
hbar = new FScrollbar(fc::horizontal, this);
|
|
hbar->setMinimum(0);
|
|
hbar->setValue(0);
|
|
hbar->hide();
|
|
}
|
|
catch (const std::bad_alloc& ex)
|
|
{
|
|
std::cerr << "not enough memory to alloc " << ex.what() << std::endl;
|
|
return;
|
|
}
|
|
|
|
vbar->addCallback
|
|
(
|
|
"change-value",
|
|
F_METHOD_CALLBACK (this, &FScrollView::cb_VBarChange)
|
|
);
|
|
|
|
hbar->addCallback
|
|
(
|
|
"change-value",
|
|
F_METHOD_CALLBACK (this, &FScrollView::cb_HBarChange)
|
|
);
|
|
|
|
xoffset_end = getScrollWidth() - getViewportWidth();
|
|
yoffset_end = getScrollHeight() - getViewportHeight();
|
|
nf_offset = isNewFont() ? 1 : 0;
|
|
setTopPadding (1 - getScrollY());
|
|
setLeftPadding (1 - getScrollX());
|
|
setBottomPadding (1 - (yoffset_end - getScrollY()));
|
|
setRightPadding (1 - (xoffset_end - getScrollX()) + nf_offset);
|
|
|
|
FPoint no_shadow(0,0);
|
|
int w = getViewportWidth();
|
|
int h = getViewportHeight();
|
|
|
|
if ( w < 1 )
|
|
w = 1;
|
|
|
|
if ( h < 1 )
|
|
h = 1;
|
|
|
|
scroll_geometry.setRect (0, 0, w, h);
|
|
createArea (scroll_geometry, no_shadow, viewport);
|
|
addPreprocessingHandler
|
|
(
|
|
F_PREPROC_HANDLER (this, &FScrollView::copy2area)
|
|
);
|
|
|
|
if ( viewport )
|
|
child_print_area = viewport;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::calculateScrollbarPos()
|
|
{
|
|
int width = getWidth();
|
|
int height = getHeight();
|
|
|
|
if ( isNewFont() )
|
|
{
|
|
vbar->setGeometry (width, 2, 2, height - 2);
|
|
hbar->setGeometry (1, height, width - 2, 1);
|
|
}
|
|
else
|
|
{
|
|
vbar->setGeometry (width, 2, 1, height - 2);
|
|
hbar->setGeometry (2, height, width - 2, 1);
|
|
}
|
|
|
|
vbar->resize();
|
|
hbar->resize();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::setHorizontalScrollBarVisibility()
|
|
{
|
|
switch ( hMode )
|
|
{
|
|
case fc::Auto:
|
|
if ( getScrollWidth() > getViewportWidth() )
|
|
hbar->setVisible();
|
|
else
|
|
hbar->hide();
|
|
break;
|
|
|
|
case fc::Hidden:
|
|
hbar->hide();
|
|
break;
|
|
|
|
case fc::Scroll:
|
|
hbar->setVisible();
|
|
break;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::setVerticalScrollBarVisibility()
|
|
{
|
|
switch ( vMode )
|
|
{
|
|
case fc::Auto:
|
|
if ( getScrollHeight() > getViewportHeight() )
|
|
vbar->setVisible();
|
|
else
|
|
vbar->hide();
|
|
break;
|
|
|
|
case fc::Hidden:
|
|
vbar->hide();
|
|
break;
|
|
|
|
case fc::Scroll:
|
|
vbar->setVisible();
|
|
break;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::setViewportCursor()
|
|
{
|
|
if ( ! isChild(getFocusWidget()) )
|
|
return;
|
|
|
|
FPoint cursor_pos ( viewport->input_cursor_x - 1
|
|
, viewport->input_cursor_y - 1 );
|
|
FPoint window_cursor_pos = getViewportCursorPos();
|
|
print_area->input_cursor_x = window_cursor_pos.getX();
|
|
print_area->input_cursor_y = window_cursor_pos.getY();
|
|
|
|
if ( viewport->input_cursor_visible
|
|
&& viewport_geometry.contains(cursor_pos) )
|
|
print_area->input_cursor_visible = true;
|
|
else
|
|
print_area->input_cursor_visible = false;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::cb_VBarChange (FWidget*, data_ptr)
|
|
{
|
|
FScrollbar::sType scrollType;
|
|
bool hasChanges = false;
|
|
short distance = 1;
|
|
short& yoffset = viewport_geometry.y1_ref();
|
|
short yoffset_before = yoffset;
|
|
short yoffset_end = short(getScrollHeight() - getViewportHeight());
|
|
int save_height = viewport_geometry.getHeight();
|
|
scrollType = vbar->getScrollType();
|
|
|
|
switch ( scrollType )
|
|
{
|
|
case FScrollbar::noScroll:
|
|
break;
|
|
|
|
case FScrollbar::scrollPageBackward:
|
|
distance = short(getViewportHeight());
|
|
// fall through
|
|
case FScrollbar::scrollStepBackward:
|
|
yoffset -= distance;
|
|
|
|
if ( yoffset < 0 )
|
|
yoffset = 0;
|
|
|
|
break;
|
|
|
|
case FScrollbar::scrollPageForward:
|
|
distance = short(getViewportHeight());
|
|
// fall through
|
|
case FScrollbar::scrollStepForward:
|
|
yoffset += distance;
|
|
|
|
if ( yoffset > yoffset_end )
|
|
yoffset = yoffset_end;
|
|
|
|
break;
|
|
|
|
case FScrollbar::scrollJump:
|
|
{
|
|
short val = short(vbar->getValue());
|
|
|
|
if ( yoffset == val )
|
|
break;
|
|
|
|
yoffset = val;
|
|
|
|
if ( yoffset > yoffset_end )
|
|
yoffset = yoffset_end;
|
|
|
|
if ( yoffset < 0 )
|
|
yoffset = 0;
|
|
|
|
break;
|
|
}
|
|
|
|
case FScrollbar::scrollWheelUp:
|
|
if ( yoffset == 0 )
|
|
break;
|
|
|
|
yoffset -= 4;
|
|
|
|
if ( yoffset < 0 )
|
|
yoffset = 0;
|
|
|
|
break;
|
|
|
|
case FScrollbar::scrollWheelDown:
|
|
if ( yoffset_end < 0 )
|
|
yoffset_end = 0;
|
|
|
|
if ( yoffset == yoffset_end )
|
|
break;
|
|
|
|
yoffset += 4;
|
|
|
|
if ( yoffset > yoffset_end )
|
|
yoffset = yoffset_end;
|
|
|
|
break;
|
|
}
|
|
|
|
if ( isVisible() && viewport && yoffset_before != yoffset )
|
|
{
|
|
viewport_geometry.setHeight(save_height);
|
|
viewport->has_changes = true;
|
|
setTopPadding (1 - yoffset);
|
|
setBottomPadding (1 - (yoffset_end - yoffset));
|
|
copy2area();
|
|
hasChanges = true;
|
|
}
|
|
|
|
if ( scrollType >= FScrollbar::scrollStepBackward
|
|
&& scrollType <= FScrollbar::scrollWheelDown
|
|
&& hasChanges )
|
|
{
|
|
vbar->setValue (yoffset);
|
|
drawVBar();
|
|
}
|
|
|
|
if ( hasChanges )
|
|
updateTerminal();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
void FScrollView::cb_HBarChange (FWidget*, data_ptr)
|
|
{
|
|
FScrollbar::sType scrollType;
|
|
bool hasChanges = false;
|
|
short distance = 1;
|
|
short& xoffset = viewport_geometry.x1_ref();
|
|
short xoffset_before = xoffset;
|
|
short xoffset_end = short(getScrollWidth() - getViewportWidth());
|
|
int save_width = viewport_geometry.getWidth();
|
|
scrollType = hbar->getScrollType();
|
|
|
|
switch ( scrollType )
|
|
{
|
|
case FScrollbar::noScroll:
|
|
break;
|
|
|
|
case FScrollbar::scrollPageBackward:
|
|
distance = short(getViewportWidth());
|
|
// fall through
|
|
case FScrollbar::scrollStepBackward:
|
|
xoffset -= distance;
|
|
|
|
if ( xoffset < 0 )
|
|
xoffset = 0;
|
|
|
|
break;
|
|
|
|
case FScrollbar::scrollPageForward:
|
|
distance = short(getViewportWidth());
|
|
// fall through
|
|
case FScrollbar::scrollStepForward:
|
|
xoffset += distance;
|
|
|
|
if ( xoffset > xoffset_end )
|
|
xoffset = xoffset_end;
|
|
|
|
if ( xoffset < 0 )
|
|
xoffset = 0;
|
|
|
|
break;
|
|
|
|
case FScrollbar::scrollJump:
|
|
{
|
|
short val = short(hbar->getValue());
|
|
|
|
if ( xoffset == val )
|
|
break;
|
|
|
|
xoffset = val;
|
|
|
|
if ( xoffset > xoffset_end )
|
|
xoffset = xoffset_end;
|
|
|
|
if ( xoffset < 0 )
|
|
xoffset = 0;
|
|
|
|
break;
|
|
}
|
|
|
|
case FScrollbar::scrollWheelUp:
|
|
if ( xoffset == 0 )
|
|
break;
|
|
|
|
xoffset -= 4;
|
|
|
|
if ( xoffset < 0 )
|
|
xoffset = 0;
|
|
|
|
break;
|
|
|
|
case FScrollbar::scrollWheelDown:
|
|
if ( xoffset == xoffset_end )
|
|
break;
|
|
|
|
xoffset += 4;
|
|
|
|
if ( xoffset > xoffset_end )
|
|
xoffset = xoffset_end;
|
|
|
|
break;
|
|
}
|
|
|
|
if ( isVisible() && viewport && xoffset_before != xoffset )
|
|
{
|
|
viewport_geometry.setWidth(save_width);
|
|
viewport->has_changes = true;
|
|
setLeftPadding (1 - xoffset);
|
|
setRightPadding (1 - (xoffset_end - xoffset) + nf_offset);
|
|
copy2area();
|
|
hasChanges = true;
|
|
}
|
|
|
|
if ( scrollType >= FScrollbar::scrollStepBackward
|
|
&& scrollType <= FScrollbar::scrollWheelDown
|
|
&& hasChanges )
|
|
{
|
|
hbar->setValue (xoffset);
|
|
drawHBar();
|
|
}
|
|
|
|
if ( hasChanges )
|
|
updateTerminal();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
inline void FScrollView::redrawHBar()
|
|
{
|
|
child_print_area = 0;
|
|
|
|
if ( hbar->isVisible() )
|
|
hbar->redraw();
|
|
|
|
child_print_area = viewport;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
inline void FScrollView::redrawVBar()
|
|
{
|
|
child_print_area = 0;
|
|
|
|
if ( vbar->isVisible() )
|
|
vbar->redraw();
|
|
|
|
child_print_area = viewport;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
inline void FScrollView::drawHBar()
|
|
{
|
|
child_print_area = 0;
|
|
|
|
if ( hbar->isVisible() )
|
|
hbar->drawBar();
|
|
|
|
child_print_area = viewport;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
inline void FScrollView::drawVBar()
|
|
{
|
|
child_print_area = 0;
|
|
|
|
if ( vbar->isVisible() )
|
|
vbar->drawBar();
|
|
|
|
child_print_area = viewport;
|
|
}
|