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* FlowLayout comes from: http://doc.trolltech.com/4.1/layouts-flowlayout.html git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16004 a592a061-630c-0410-9148-cb99ea01b6c8
183 lines
3.4 KiB
C
183 lines
3.4 KiB
C
/**
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* \file iconpalette.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author John Levon
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "iconpalette.h"
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#include "qt_helpers.h"
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#include "controllers/ControlMath.h" // for find_xpm
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#include <QPixmap>
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#include <QGridLayout>
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#include <QPushButton>
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#include <QToolTip>
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using std::make_pair;
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using std::string;
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using std::vector;
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namespace lyx {
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namespace frontend {
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FlowLayout::FlowLayout(QWidget *parent) : QLayout(parent)
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{
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setMargin(0);
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setSpacing(-1);
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}
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FlowLayout::~FlowLayout()
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{
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QLayoutItem *item;
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while ((item = takeAt(0)))
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delete item;
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}
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void FlowLayout::addItem(QLayoutItem *item)
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{
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itemList.append(item);
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}
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int FlowLayout::count() const
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{
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return itemList.size();
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}
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QLayoutItem *FlowLayout::itemAt(int index) const
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{
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return itemList.value(index);
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}
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QLayoutItem *FlowLayout::takeAt(int index)
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{
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if (index >= 0 && index < itemList.size())
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return itemList.takeAt(index);
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else
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return 0;
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}
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Qt::Orientations FlowLayout::expandingDirections() const
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{
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return 0;
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}
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bool FlowLayout::hasHeightForWidth() const
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{
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return true;
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}
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int FlowLayout::heightForWidth(int width) const
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{
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int height = doLayout(QRect(0, 0, width, 0), true);
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return height;
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}
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void FlowLayout::setGeometry(const QRect &rect)
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{
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QLayout::setGeometry(rect);
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doLayout(rect, false);
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}
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QSize FlowLayout::sizeHint() const
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{
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int const ncols = 5;
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int const rows = (itemList.size() - 1 )/ncols + 1;
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int const cols = qMin(rows * itemList.size(), ncols);
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return QSize(cols * minimumSize().width() + 1,
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rows * minimumSize().height() + 1);
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}
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QSize FlowLayout::minimumSize() const
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{
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QSize size;
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int const n = itemList.size();
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for (int i = 0; i < n; ++i) {
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size = size.expandedTo(itemList.at(i)->minimumSize());
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}
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return size;
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}
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int FlowLayout::doLayout(const QRect &rect, bool testOnly) const
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{
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int x = rect.x();
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int y = rect.y();
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int lineHeight = 0;
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for (int i = 0; i < itemList.size(); ++i) {
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QLayoutItem * item = itemList.at(i);
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int nextX = x + item->sizeHint().width() + spacing();
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if (nextX - spacing() > rect.right() && lineHeight > 0) {
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x = rect.x();
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y = y + lineHeight + spacing();
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nextX = x + item->sizeHint().width() + spacing();
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lineHeight = 0;
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}
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if (!testOnly)
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item->setGeometry(QRect(QPoint(x, y), item->sizeHint()));
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x = nextX;
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lineHeight = qMax(lineHeight, item->sizeHint().height());
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}
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return y + lineHeight - rect.y();
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}
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IconPalette::IconPalette(QWidget * parent, char const ** entries)
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: QWidget(parent)
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{
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FlowLayout * layout_ = new FlowLayout(this);
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layout_->setSpacing(0);
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int const button_size = 40;
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for (int i = 0; *entries[i]; ++i) {
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QPushButton * p = new QPushButton;
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p->setFixedSize(button_size, button_size);
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p->setIcon(QPixmap(toqstr(lyx::frontend::find_xpm(entries[i]))));
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p->setToolTip(toqstr(string("\\") + entries[i]));
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connect(p, SIGNAL(clicked()), this, SLOT(clicked()));
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buttons_.push_back(make_pair(p, entries[i]));
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layout_->addWidget(p);
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}
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}
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void IconPalette::clicked()
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{
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vector<Button>::const_iterator it = buttons_.begin();
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vector<Button>::const_iterator const end = buttons_.end();
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for (; it != end; ++it) {
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if (sender() == it->first) {
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// emit signal
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button_clicked(it->second);
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return;
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}
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}
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}
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} // namespace frontend
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} // namespace lyx
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#include "iconpalette_moc.cpp"
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