/*========================================================================= Library: CTK Copyright (c) Kitware Inc. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.txt Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. =========================================================================*/ /*========================================================================= Program: ParaView Module: pqCheckableHeaderView.cxx Copyright (c) 2005-2008 Sandia Corporation, Kitware Inc. All rights reserved. ParaView is a free software; you can redistribute it and/or modify it under the terms of the ParaView license version 1.2. See http://www.paraview.org/paraview/project/license.html for the full ParaView license. A copy of this license can be obtained by contacting Kitware Inc. 28 Corporate Drive Clifton Park, NY 12065 USA THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. =========================================================================*/ // Qt includes #include #include #include #include #include #include #include #include #include // CTK includes #include "ctkCheckableHeaderView.h" #include #include "ctkCheckBoxPixmaps.h" //----------------------------------------------------------------------------- class ctkCheckableHeaderViewPrivate { Q_DECLARE_PUBLIC(ctkCheckableHeaderView); protected: ctkCheckableHeaderView* const q_ptr; public: ctkCheckableHeaderViewPrivate(ctkCheckableHeaderView& object); ~ctkCheckableHeaderViewPrivate(); void init(); ctkCheckableModelHelper* CheckableModelHelper; int Pressed; ctkCheckBoxPixmaps* CheckBoxPixmaps; bool HeaderIsUpdating; }; //---------------------------------------------------------------------------- ctkCheckableHeaderViewPrivate::ctkCheckableHeaderViewPrivate(ctkCheckableHeaderView& object) :q_ptr(&object) { this->CheckableModelHelper = 0; this->Pressed = -1; this->CheckBoxPixmaps = 0; this->HeaderIsUpdating = false; } //----------------------------------------------------------------------------- ctkCheckableHeaderViewPrivate::~ctkCheckableHeaderViewPrivate() { if (this->CheckBoxPixmaps) { delete this->CheckBoxPixmaps; this->CheckBoxPixmaps = 0; } if (this->CheckableModelHelper) { delete this->CheckableModelHelper; this->CheckableModelHelper = 0; } } //---------------------------------------------------------------------------- void ctkCheckableHeaderViewPrivate::init() { Q_Q(ctkCheckableHeaderView); this->CheckBoxPixmaps = new ctkCheckBoxPixmaps(q); this->CheckableModelHelper = new ctkCheckableModelHelper(q->orientation(), q); } //---------------------------------------------------------------------------- ctkCheckableHeaderView::ctkCheckableHeaderView( Qt::Orientation orient, QWidget *widgetParent) : QHeaderView(orient, widgetParent) , d_ptr(new ctkCheckableHeaderViewPrivate(*this)) { Q_D(ctkCheckableHeaderView); d->init(); // TODO: doesn't support reparenting here. if(widgetParent) { // Listen for focus change events. widgetParent->installEventFilter(this); } } //----------------------------------------------------------------------------- ctkCheckableHeaderView::~ctkCheckableHeaderView() { } //----------------------------------------------------------------------------- Qt::CheckState ctkCheckableHeaderView::checkState(int section)const { Q_D(const ctkCheckableHeaderView); return d->CheckableModelHelper->headerCheckState(section); } //----------------------------------------------------------------------------- bool ctkCheckableHeaderView::checkState(int section, Qt::CheckState& checkState)const { Q_D(const ctkCheckableHeaderView); return d->CheckableModelHelper->headerCheckState(section, checkState); } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::setCheckState(int section, Qt::CheckState checkState) { Q_D(ctkCheckableHeaderView); d->CheckableModelHelper->setHeaderCheckState(section, checkState); } //----------------------------------------------------------------------------- ctkCheckableModelHelper* ctkCheckableHeaderView::checkableModelHelper()const { Q_D(const ctkCheckableHeaderView); return d->CheckableModelHelper; } //----------------------------------------------------------------------------- bool ctkCheckableHeaderView::eventFilter(QObject *, QEvent *e) { if(e->type() != QEvent::FocusIn && e->type() != QEvent::FocusOut) { return false; } //this->updateHeaderPixmaps(); return false; } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::setModel(QAbstractItemModel *newModel) { Q_D(ctkCheckableHeaderView); QAbstractItemModel *current = this->model(); if (current) { this->disconnect( current, SIGNAL(headerDataChanged(Qt::Orientation,int,int)), this, SLOT(onHeaderDataChanged(Qt::Orientation,int,int))); this->disconnect( current, SIGNAL(modelReset()), this, SLOT(updateHeaderPixmaps())); this->disconnect( current, SIGNAL(columnsInserted(QModelIndex,int,int)), this, SLOT(onHeaderSectionInserted())); this->disconnect( current, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(onHeaderSectionInserted())); } this->QHeaderView::setModel(newModel); d->CheckableModelHelper->setModel(newModel); if(newModel) { this->connect( newModel, SIGNAL(headerDataChanged(Qt::Orientation,int,int)), this, SLOT(onHeaderDataChanged(Qt::Orientation,int,int))); this->connect( newModel, SIGNAL(modelReset()), this, SLOT(updateHeaderPixmaps())); if(this->orientation() == Qt::Horizontal) { this->connect( newModel, SIGNAL(columnsInserted(QModelIndex,int,int)), this, SLOT(onHeaderSectionInserted())); } else { this->connect( newModel, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(onHeaderSectionInserted())); } } this->updateHeaderPixmaps(); } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::setRootIndex(const QModelIndex &index) { Q_D(ctkCheckableHeaderView); this->QHeaderView::setRootIndex(index); d->CheckableModelHelper->setRootIndex(index); } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::onHeaderDataChanged(Qt::Orientation orient, int firstSection, int lastSection) { if(orient != this->orientation()) { return; } // update pixmap this->updateHeaderPixmaps(firstSection, lastSection); } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::updateHeaderPixmaps(int firstSection, int lastSection) { Q_D(ctkCheckableHeaderView); QAbstractItemModel *current = this->model(); if(d->HeaderIsUpdating || !current) { return; } d->HeaderIsUpdating = true; firstSection = qBound(0, firstSection, this->count() -1); lastSection = qBound(0, lastSection, this->count() -1); bool active = true; if(this->parentWidget()) { active = this->parentWidget()->hasFocus(); } for(int i = firstSection; i <= lastSection; i++) { QVariant decoration; Qt::CheckState checkState; if (d->CheckableModelHelper->headerCheckState(i, checkState)) { decoration = d->CheckBoxPixmaps->pixmap(checkState, active); } current->setHeaderData(i, this->orientation(), decoration, Qt::DecorationRole); } d->HeaderIsUpdating = false; } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::onHeaderSectionInserted() { this->updateHeaderPixmaps(); } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::mousePressEvent(QMouseEvent *e) { Q_D(ctkCheckableHeaderView); if (e->button() != Qt::LeftButton || d->Pressed >= 0) { d->Pressed = -1; this->QHeaderView::mousePressEvent(e); return; } d->Pressed = -1; //check if the check box is pressed int pos = this->orientation() == Qt::Horizontal ? e->x() : e->y(); int section = this->logicalIndexAt(pos); if (d->CheckableModelHelper->isHeaderCheckable(section) && this->isPointInCheckBox(section, e->pos())) { d->Pressed = section; } else { this->QHeaderView::mousePressEvent(e); } } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::mouseReleaseEvent(QMouseEvent *e) { Q_D(ctkCheckableHeaderView); if (e->button() != Qt::LeftButton || d->Pressed < 0) { d->Pressed = -1; this->QHeaderView::mouseReleaseEvent(e); return; } //check if the check box is pressed int pos = this->orientation() == Qt::Horizontal ? e->x() : e->y(); int section = this->logicalIndexAt(pos); if (section == d->Pressed && this->isPointInCheckBox(section, e->pos())) { d->Pressed = -1; d->CheckableModelHelper->toggleHeaderCheckState(section); } this->QHeaderView::mousePressEvent(e); } //----------------------------------------------------------------------------- bool ctkCheckableHeaderView::isPointInCheckBox(int section, QPoint pos)const { QRect sectionRect = this->orientation() == Qt::Horizontal ? QRect(this->sectionPosition(section), 0, this->sectionSize(section), this->height()): QRect(0, this->sectionPosition(section), this->width(), this->sectionSize(section)); QStyleOptionHeader opt; this->initStyleOption(&opt); this->initStyleSectionOption(&opt, section, sectionRect); QRect headerLabelRect = this->style()->subElementRect(QStyle::SE_HeaderLabel, &opt, this); // from qcommonstyle.cpp:1541 if (opt.icon.isNull()) { return false; } QPixmap pixmap = opt.icon.pixmap(this->style()->pixelMetric(QStyle::PM_SmallIconSize), (opt.state & QStyle::State_Enabled) ? QIcon::Normal : QIcon::Disabled); QRect aligned = this->style()->alignedRect(opt.direction, QFlag(opt.iconAlignment), pixmap.size(), headerLabelRect); QRect inter = aligned.intersected(headerLabelRect); return inter.contains(pos); } //----------------------------------------------------------------------------- void ctkCheckableHeaderView::initStyleSectionOption(QStyleOptionHeader *option, int section, QRect rect)const { // from qheaderview.cpp:paintsection QStyle::State state = QStyle::State_None; if (this->isEnabled()) { state |= QStyle::State_Enabled; } if (this->window()->isActiveWindow()) { state |= QStyle::State_Active; } if (this->isSortIndicatorShown() && this->sortIndicatorSection() == section) { option->sortIndicator = (this->sortIndicatorOrder() == Qt::AscendingOrder) ? QStyleOptionHeader::SortDown : QStyleOptionHeader::SortUp; } // setup the style option structure QVariant textAlignment = this->model()->headerData(section, this->orientation(), Qt::TextAlignmentRole); option->rect = rect; option->section = section; option->state |= state; option->textAlignment = Qt::Alignment(textAlignment.isValid() ? Qt::Alignment(textAlignment.toInt()) : this->defaultAlignment()); option->iconAlignment = Qt::AlignVCenter; option->text = this->model()->headerData(section, this->orientation(), Qt::DisplayRole).toString(); if (this->textElideMode() != Qt::ElideNone) { option->text = option->fontMetrics.elidedText(option->text, this->textElideMode() , rect.width() - 4); } QVariant variant = this->model()->headerData(section, this->orientation(), Qt::DecorationRole); option->icon = qvariant_cast(variant); if (option->icon.isNull()) { option->icon = qvariant_cast(variant); } QVariant foregroundBrush = this->model()->headerData(section, this->orientation(), Qt::ForegroundRole); if (foregroundBrush.canConvert()) { option->palette.setBrush(QPalette::ButtonText, qvariant_cast(foregroundBrush)); } //QPointF oldBO = painter->brushOrigin(); QVariant backgroundBrush = this->model()->headerData(section, this->orientation(), Qt::BackgroundRole); if (backgroundBrush.canConvert()) { option->palette.setBrush(QPalette::Button, qvariant_cast(backgroundBrush)); option->palette.setBrush(QPalette::Window, qvariant_cast(backgroundBrush)); //painter->setBrushOrigin(option->rect.topLeft()); } // the section position int visual = this->visualIndex(section); Q_ASSERT(visual != -1); if (this->count() == 1) { option->position = QStyleOptionHeader::OnlyOneSection; } else if (visual == 0) { option->position = QStyleOptionHeader::Beginning; } else if (visual == this->count() - 1) { option->position = QStyleOptionHeader::End; } else { option->position = QStyleOptionHeader::Middle; } option->orientation = this->orientation(); /* the selected position bool previousSelected = d->isSectionSelected(this->logicalIndex(visual - 1)); bool nextSelected = d->isSectionSelected(this->logicalIndex(visual + 1)); if (previousSelected && nextSelected) option->selectedPosition = QStyleOptionHeader::NextAndPreviousAreSelected; else if (previousSelected) option->selectedPosition = QStyleOptionHeader::PreviousIsSelected; else if (nextSelected) option->selectedPosition = QStyleOptionHeader::NextIsSelected; else option->selectedPosition = QStyleOptionHeader::NotAdjacent; */ }