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baldurk
139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
/******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2019-2021 Baldur Karlsson
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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#include "CollapseGroupBox.h"
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#include <QMouseEvent>
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#include <QStyleOptionGroupBox>
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#include <QStylePainter>
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CollapseGroupBox::CollapseGroupBox(QWidget *parent) : QGroupBox(parent)
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{
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}
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CollapseGroupBox::~CollapseGroupBox()
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{
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}
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void CollapseGroupBox::setMaximumSize(const QSize &size)
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{
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// if collapsed, silently update the 'original' max height for when we un-collapse. Otherwise
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// forward the call
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if(m_collapsed)
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{
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m_prevMaxHeight = size.height();
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QGroupBox::setMaximumSize(QSize(size.width(), maximumHeight()));
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}
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else
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{
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QGroupBox::setMaximumSize(size);
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}
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}
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void CollapseGroupBox::setMaximumHeight(int maxh)
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{
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// if collapsed, silently update the 'original' max height for when we un-collapse. Otherwise
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// forward the call
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if(m_collapsed)
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m_prevMaxHeight = maxh;
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else
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QGroupBox::setMaximumHeight(maxh);
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}
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void CollapseGroupBox::setCollapsed(bool coll)
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{
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// redundant call
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if(m_collapsed == coll)
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return;
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// if not collapsed, save the current maximum height so we can restore it again and set the
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// 'collapsed' maximum height. If we *are* collapsed, then restore the maximum height
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if(m_collapsed)
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{
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QGroupBox::setMaximumHeight(m_prevMaxHeight);
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}
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else
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{
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m_prevMaxHeight = maximumHeight();
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QStyleOptionGroupBox option;
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initStyleOption(&option);
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option.subControls |= QStyle::SC_GroupBoxCheckBox;
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QRect contentsRect =
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style()->subControlRect(QStyle::CC_GroupBox, &option, QStyle::SC_GroupBoxContents, this);
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QGroupBox::setMaximumHeight(height() - contentsRect.height());
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}
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m_collapsed = coll;
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update();
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}
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void CollapseGroupBox::paintEvent(QPaintEvent *)
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{
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QStylePainter paint(this);
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QStyleOptionGroupBox option;
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initStyleOption(&option);
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// pretend we have a groupbox so the painting allocates space for it
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option.subControls |= QStyle::SC_GroupBoxCheckBox;
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paint.drawComplexControl(QStyle::CC_GroupBox, option);
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// now paint over the checkbox
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QRect checkBoxRect =
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style()->subControlRect(QStyle::CC_GroupBox, &option, QStyle::SC_GroupBoxCheckBox, this);
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paint.fillRect(checkBoxRect, palette().brush(QPalette::Window));
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QStyleOption arrowOpt = option;
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arrowOpt.rect = checkBoxRect;
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paint.drawPrimitive(m_collapsed ? QStyle::PE_IndicatorArrowRight : QStyle::PE_IndicatorArrowDown,
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arrowOpt);
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}
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void CollapseGroupBox::mouseReleaseEvent(QMouseEvent *event)
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{
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if(event->button() != Qt::LeftButton)
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{
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event->ignore();
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return;
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}
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QStyleOptionGroupBox option;
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initStyleOption(&option);
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// pretend we have a groupbox so we can hit-test for it
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option.subControls |= QStyle::SC_GroupBoxCheckBox;
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if(style()->hitTestComplexControl(QStyle::CC_GroupBox, &option, event->pos(), this) &
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(QStyle::SC_GroupBoxCheckBox | QStyle::SC_GroupBoxLabel))
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{
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setCollapsed(!m_collapsed);
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}
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}
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