]> git.lyx.org Git - lyx.git/blobdiff - src/frontends/qt4/GuiToolbar.cpp
do what the FIXME suggested
[lyx.git] / src / frontends / qt4 / GuiToolbar.cpp
index 04c761754604dfad31393648a5ce1718bff16184..ed6277df583dca60083a741d130b6381a8bde518 100644 (file)
 
 #include <config.h>
 
+#include "GuiView.h"
+#include "GuiCommandBuffer.h"
+#include "GuiToolbar.h"
+#include "LyXAction.h"
+#include "Action.h"
+#include "qt_helpers.h"
+#include "InsertTableWidget.h"
+
 #include "Buffer.h"
 #include "BufferParams.h"
 #include "BufferView.h"
 #include "Cursor.h"
-#include "support/debug.h"
 #include "FuncRequest.h"
 #include "FuncStatus.h"
-#include "support/gettext.h"
 #include "IconPalette.h"
 #include "Layout.h"
 #include "LyXFunc.h"
+#include "LyXRC.h"
 #include "Paragraph.h"
 #include "TextClass.h"
 #include "ToolbarBackend.h"
 
-#include "GuiView.h"
-#include "GuiCommandBuffer.h"
-#include "GuiToolbar.h"
-#include "LyXAction.h"
-#include "Action.h"
-#include "qt_helpers.h"
-#include "InsertTableWidget.h"
-#include "LyXRC.h"
-
+#include "support/debug.h"
 #include "support/filetools.h"
+#include "support/gettext.h"
 #include "support/lstrings.h"
 #include "support/lyxalgo.h" // sorted
 
+#include <QAbstractItemDelegate>
+#include <QAbstractTextDocumentLayout>
+#include <QApplication>
 #include <QComboBox>
+#include <QHeaderView>
+#include <QKeyEvent>
+#include <QList>
+#include <QPainter>
+#include <QPixmap>
+#include <QSortFilterProxyModel>
+#include <QStandardItem>
+#include <QStandardItemModel>
+#include <QTextDocument>
 #include <QToolBar>
 #include <QToolButton>
-#include <QAction>
-#include <QPixmap>
+#include <QVariant>
 
 #include <boost/assert.hpp>
 
@@ -230,124 +241,401 @@ static QIcon getIcon(FuncRequest const & f, bool unknown)
 //
 /////////////////////////////////////////////////////////////////////
 
+class FilterItemDelegate : public QAbstractItemDelegate {
+public:
+       ///
+       explicit FilterItemDelegate(QObject * parent = 0)
+       : QAbstractItemDelegate(parent) {}
+       
+       ///
+       void paint(QPainter * painter, QStyleOptionViewItem const & option,
+               QModelIndex const & index) const {
+               QComboBox * combo = static_cast<QComboBox const *>(parent());
+               
+               // Draw using the menu item style (this is how QComboBox does it).
+               // But for the rich text drawing below we will call it with an
+               // empty string, and later then draw over it the real string.
+               painter->save();
+               QStyleOptionMenuItem opt = getStyleOption(option, index);
+               QString text = underlineFilter(opt.text);
+               opt.text = QString();
+               painter->eraseRect(option.rect);
+               combo->style()->drawControl(QStyle::CE_MenuItem, &opt, painter, combo->view());
+               painter->restore();
+               
+               // don't draw string for separator
+               if (opt.menuItemType == QStyleOptionMenuItem::Separator)
+                       return;
+               
+               // Draw the rich text.
+               painter->save();
+               QColor col = opt.palette.text().color();
+               if (opt.state & QStyle::State_Selected)
+                       col = opt.palette.highlightedText().color();
+               QAbstractTextDocumentLayout::PaintContext context;
+               context.palette.setColor(QPalette::Text, col);
+               
+               QTextDocument doc;
+               doc.setDefaultFont(opt.font);
+               doc.setHtml(text);
+               painter->translate(opt.rect.x() + 20, opt.rect.y());
+               doc.documentLayout()->draw(painter, context);
+               painter->restore();
+       }
+       
+       ///
+       QSize sizeHint(QStyleOptionViewItem const & option,
+               QModelIndex const & index) const {
+               QComboBox * combo = static_cast<QComboBox const *>(parent());
+
+               QStyleOptionMenuItem opt = getStyleOption(option, index);
+               return combo->style()->sizeFromContents(
+                        QStyle::CT_MenuItem, &opt, option.rect.size(), combo);
+       }
+       
+private:
+       ///
+       QString underlineFilter(QString const & s) const
+       {
+               // get filter
+               GuiLayoutBox * p = static_cast<GuiLayoutBox *>(parent());
+               QString const & f = p->filter();
+               if (f.isEmpty())
+                       return s;
+               
+               // step through data item and put "(x)" for every matching character
+               QString r;
+               int lastp = -1;
+               p->filter();
+               for (int i = 0; i < f.length(); ++i) {
+                       int p = s.indexOf(f[i], lastp + 1, Qt::CaseInsensitive);
+                       BOOST_ASSERT(p != -1);
+                       if (lastp == p - 1 && lastp != -1) {
+                               // remove ")" and append "x)"
+                               r = r.left(r.length() - 4) + s[p] + "</u>";
+                       } else {
+                               // append "(x)"
+                               r += s.mid(lastp + 1, p - lastp - 1);
+                               r += QString("<u>") + s[p] + "</u>";
+                       }
+                       lastp = p;
+               }
+               r += s.mid(lastp + 1);
+               return r;
+       }
+
+       ///
+       QStyleOptionMenuItem getStyleOption(QStyleOptionViewItem const & option,
+               QModelIndex const & index) const
+       {
+               QComboBox * combo = static_cast<QComboBox const *>(parent());
+
+               // create the options for a menu item
+               QStyleOptionMenuItem menuOption;
+               menuOption.palette = QApplication::palette("QMenu");
+               menuOption.state = QStyle::State_Active | QStyle::State_Enabled;
+               if (option.state & QStyle::State_Selected)
+                       menuOption.state |= QStyle::State_Selected;
+               menuOption.checkType = QStyleOptionMenuItem::NonExclusive;
+               menuOption.checked = combo->currentIndex() == index.row();
+               menuOption.text = index.model()->data(index, Qt::DisplayRole).toString()
+                       .replace(QLatin1Char('&'), QLatin1String("&&"));
+               if (menuOption.text.left(2) == "--")
+                       menuOption.menuItemType = QStyleOptionMenuItem::Separator;
+               else
+                       menuOption.menuItemType = QStyleOptionMenuItem::Normal;
+               menuOption.tabWidth = 0;
+               menuOption.menuRect = option.rect;
+               menuOption.rect = option.rect;
+               menuOption.font = combo->font();
+               menuOption.fontMetrics = QFontMetrics(menuOption.font);
+               
+               return menuOption;
+       }
+};
+
+
+class GuiFilterProxyModel : public QSortFilterProxyModel
+{
+public:
+       ///
+       GuiFilterProxyModel(QObject * parent)
+               : QSortFilterProxyModel(parent) {}
+
+       ///
+       void setCharFilter(QString const & f)
+       {
+               setFilterRegExp(charFilterRegExp(f));
+               dataChanged(index(0, 0), index(rowCount() - 1, 1));
+       }
+
+private:
+       ///
+       QString charFilterRegExp(QString const & filter)
+       {
+               QString re;
+               for (int i = 0; i < filter.length(); ++i)
+                       re += ".*" + QRegExp::escape(filter[i]);
+               return re;
+       }
+};
+
+
 GuiLayoutBox::GuiLayoutBox(GuiView & owner)
-       : owner_(owner)
+       : owner_(owner), filterItemDelegate_(new FilterItemDelegate(this))
 {
        setSizeAdjustPolicy(QComboBox::AdjustToContents);
        setFocusPolicy(Qt::ClickFocus);
        setMinimumWidth(sizeHint().width());
        setMaxVisibleItems(100);
 
-       QObject::connect(this, SIGNAL(activated(QString)),
-                        this, SLOT(selected(QString)));
+       // set the layout model with two columns
+       // 1st: translated layout names
+       // 2nd: raw layout names
+       model_ = new QStandardItemModel(0, 2, this);
+       filterModel_ = new GuiFilterProxyModel(this);
+       filterModel_->setSourceModel(model_);
+       filterModel_->setDynamicSortFilter(true);
+       filterModel_->setFilterCaseSensitivity(Qt::CaseInsensitive);
+       setModel(filterModel_);
+
+       // for the filtering we have to intercept characters
+       view()->installEventFilter(this);
+       view()->setItemDelegateForColumn(0, filterItemDelegate_);
+       
+       QObject::connect(this, SIGNAL(activated(int)),
+                        this, SLOT(selected(int)));
        owner_.setLayoutDialog(this);
        updateContents(true);
 }
 
 
+void GuiLayoutBox::setFilter(QString const & s)
+{
+       // remember old selection
+       int sel = currentIndex();
+       if (sel != -1)
+               lastSel_ = filterModel_->mapToSource(filterModel_->index(sel, 0)).row();
+
+       filter_ = s;
+       filterModel_->setCharFilter(s);
+       
+       // restore old selection
+       if (lastSel_ != -1) {
+               QModelIndex i = filterModel_->mapFromSource(model_->index(lastSel_, 0));
+               if (i.isValid())
+                       setCurrentIndex(i.row());
+       }
+       
+       // Workaround to resize to content size
+       // FIXME: There must be a better way. The QComboBox::AdjustToContents)
+       //        does not help.
+       if (view()->isVisible())
+               QComboBox::showPopup();
+}
+
+
+void GuiLayoutBox::resetFilter()
+{
+       setFilter(QString());
+}
+
+
+void GuiLayoutBox::showPopup()
+{
+       resetFilter();
+       owner_.message(_("Enter characters to filter the layout list."));
+       QComboBox::showPopup();
+}
+
+
+bool GuiLayoutBox::eventFilter(QObject * o, QEvent * e)
+{
+       if (e->type() != QEvent::KeyPress)
+               return QComboBox::eventFilter(o, e);
+
+       QKeyEvent * ke = static_cast<QKeyEvent*>(e);
+       bool modified = (ke->modifiers() == Qt::ControlModifier)
+               || (ke->modifiers() == Qt::AltModifier)
+               || (ke->modifiers() == Qt::MetaModifier);
+       
+       switch (ke->key()) {
+       case Qt::Key_Escape:
+               if (!modified && !filter_.isEmpty()) {
+                       resetFilter();
+                       return true;
+               }
+               break;
+       case Qt::Key_Backspace:
+               if (!modified) {
+                       // cut off one character
+                       setFilter(filter_.left(filter_.length() - 1));
+               }
+               break;
+       default:
+               if (modified || ke->text().isEmpty())
+                       break;
+               // find chars for the filter string
+               QString s;
+               for (int i = 0; i < ke->text().length(); ++i) {
+                       QChar c = ke->text()[i];
+                       if (c.isLetterOrNumber()
+                           || c.isSymbol()
+                           || c.isPunct()
+                           || c.category() == QChar::Separator_Space) {
+                               s += c;
+                       }
+               }
+               if (!s.isEmpty()) {
+                       // append new chars to the filter string
+                       setFilter(filter_ + s);
+                       return true;
+               }
+               break;
+       }
+
+       return QComboBox::eventFilter(o, e);
+}
+
+
 void GuiLayoutBox::set(docstring const & layout)
 {
+       resetFilter();
+       
        if (!text_class_)
                return;
 
-       QString const & name = toqstr(translateIfPossible(
-               (*text_class_)[layout]->name()));
-
+       QString const & name = toqstr((*text_class_)[layout]->name());
        if (name == currentText())
                return;
 
-       int i = findText(name);
-       if (i == -1) {
+       QList<QStandardItem *> r = model_->findItems(name, Qt::MatchExactly, 1);
+       if (r.empty()) {
                lyxerr << "Trying to select non existent layout type "
                        << fromqstr(name) << endl;
                return;
        }
 
-       setCurrentIndex(i);
+       setCurrentIndex(filterModel_->mapFromSource(r.first()->index()).row());
 }
 
 
-void GuiLayoutBox::addItemSort(QString const & item, bool sorted)
+void GuiLayoutBox::addItemSort(docstring const & item, bool sorted)
 {
-       int const end = count();
-       if (!sorted || end < 2 || item[0].category() != QChar::Letter_Uppercase) {
-               addItem(item);
+       QString qitem = toqstr(item);
+       QString titem = toqstr(translateIfPossible(item));
+
+       QList<QStandardItem *> row;
+       row.append(new QStandardItem(titem));
+       row.append(new QStandardItem(qitem));
+
+       // the simple unsorted case
+       int const end = model_->rowCount();
+       if (!sorted || end < 2 || qitem[0].category() != QChar::Letter_Uppercase) {
+               model_->appendRow(row);
                return;
        }
 
-       // Let the default one be at the beginning
-       int i = 1;
-       for (setCurrentIndex(i); currentText() < item;) {
-               // e.g. --Separator--
-               if (currentText()[0].category() != QChar::Letter_Uppercase)
-                       break;
-               if (++i == end)
-                       break;
-               setCurrentIndex(i);
+       // find row to insert the item, after the separator if it exists
+       int i = 1; // skip the Standard layout
+       
+       QList<QStandardItem *> sep = model_->findItems("--", Qt::MatchStartsWith);
+       if (!sep.isEmpty())
+               i = sep.first()->index().row() + 1;
+       if (i < model_->rowCount()) {
+               // find alphabetic position
+               QString is = model_->item(i, 0)->text();
+               while (is.compare(titem) < 0) {
+                       // e.g. --Separator--
+                       if (is.at(0).category() != QChar::Letter_Uppercase)
+                               break;
+                       ++i;
+                       if (i == end)
+                               break;
+                       is = model_->item(i, 0)->text();
+               }
        }
 
-       insertItem(i, item);
+       model_->insertRow(i, row);
 }
 
 
 void GuiLayoutBox::updateContents(bool reset)
 {
+       resetFilter();
+       
        Buffer const * buffer = owner_.buffer();
        if (!buffer) {
-               clear();
+               model_->clear();
                setEnabled(false);
                text_class_ = 0;
+               inset_ = 0;
                return;
        }
 
-       setEnabled(true);
-       TextClass const * text_class = &buffer->params().getTextClass();
-       if (!reset && text_class_ == text_class) {
+       // we'll only update the layout list if the text class has changed
+       // or we've moved from one inset to another
+       DocumentClass const * text_class = &buffer->params().documentClass();
+       Inset const * inset = 
+       owner_.view()->cursor().innerParagraph().inInset();
+       if (!reset && text_class_ == text_class && inset_ == inset) {
                set(owner_.view()->cursor().innerParagraph().layout()->name());
                return;
        }
 
+       inset_ = inset;
        text_class_ = text_class;
 
-       setUpdatesEnabled(false);
-       clear();
-
-       TextClass::const_iterator it = text_class_->begin();
-       TextClass::const_iterator const end = text_class_->end();
-       for (; it != end; ++it) {
-               // ignore obsolete entries
-               addItemSort(toqstr(translateIfPossible((*it)->name())), lyxrc.sort_layouts);
+       model_->clear();
+       for (size_t i = 0; i != text_class_->layoutCount(); ++i) {
+               Layout const & lt = *text_class_->layout(i);
+               docstring const & name = lt.name();
+               // if this inset requires the empty layout, we skip the default
+               // layout
+               if (name == text_class_->defaultLayoutName() && inset &&
+                   (inset->forceEmptyLayout() || inset->useEmptyLayout()))
+                       continue;
+               // if it doesn't require the empty layout, we skip it
+               if (name == text_class_->emptyLayoutName() && inset &&
+                   !inset->forceEmptyLayout() && !inset->useEmptyLayout())
+                       continue;
+               addItemSort(name, lyxrc.sort_layouts);
        }
 
-       setCurrentIndex(0);
+       set(owner_.view()->cursor().innerParagraph().layout()->name());
 
        // needed to recalculate size hint
        hide();
        setMinimumWidth(sizeHint().width());
-       set(owner_.view()->cursor().innerParagraph().layout()->name());
+       setEnabled(!buffer->isReadonly());
        show();
-
-       setUpdatesEnabled(true);
 }
 
 
-void GuiLayoutBox::selected(const QString & str)
+void GuiLayoutBox::selected(int index)
 {
+       // get selection
+       QModelIndex mindex = filterModel_->mapToSource(filterModel_->index(index, 1));
+       docstring const name = qstring_to_ucs4(model_->itemFromIndex(mindex)->text());
+
        owner_.setFocus();
-       updateContents(false);
-       if (!text_class_)
+
+       if (!text_class_) {
+               updateContents(false);
+               resetFilter();
                return;
+       }
 
-       docstring const name = qstring_to_ucs4(str);
-       TextClass::const_iterator it  = text_class_->begin();
-       TextClass::const_iterator const end = text_class_->end();
-       for (; it != end; ++it) {
-               docstring const & itname = (*it)->name();
-               if (translateIfPossible(itname) == name) {
+       // find corresponding text class
+       for (size_t i = 0; i != text_class_->layoutCount(); ++i) {
+               docstring const & itname = text_class_->layout(i)->name();
+               if (itname == name) {
                        FuncRequest const func(LFUN_LAYOUT, itname,
                                               FuncRequest::TOOLBAR);
                        theLyXFunc().setLyXView(&owner_);
                        lyx::dispatch(func);
+                       updateContents(false);
+                       resetFilter();
                        return;
                }
        }
@@ -396,23 +684,18 @@ class PaletteButton : public QToolButton
 private:
        GuiToolbar * bar_;
        ToolbarItem const & tbitem_;
-       IconPalette * panel_;
        bool initialized_;
 public:
        PaletteButton(GuiToolbar * bar, ToolbarItem const & item)
                : QToolButton(bar), bar_(bar), tbitem_(item), initialized_(false)
        {
-               QString label = qt_(to_ascii(tbitem_.label_));
+               QString const label = qt_(to_ascii(tbitem_.label_));
                setToolTip(label);
                setStatusTip(label);
                setText(label);
                connect(bar_, SIGNAL(iconSizeChanged(QSize)),
                        this, SLOT(setIconSize(QSize)));
-               panel_ = new IconPalette(this);
-               panel_->setWindowTitle(label);
                setCheckable(true);
-               connect(this, SIGNAL(clicked(bool)), panel_, SLOT(setVisible(bool)));
-               connect(panel_, SIGNAL(visible(bool)), this, SLOT(setChecked(bool)));
                ToolbarInfo const * tbinfo = 
                        toolbarbackend.getDefinedToolbarInfo(tbitem_.name_);
                if (tbinfo)
@@ -435,11 +718,16 @@ public:
                        lyxerr << "Unknown toolbar " << tbitem_.name_ << endl;
                        return;
                }
+               IconPalette * panel = new IconPalette(this);
+               QString const label = qt_(to_ascii(tbitem_.label_));
+               panel->setWindowTitle(label);
+               connect(this, SIGNAL(clicked(bool)), panel, SLOT(setVisible(bool)));
+               connect(panel, SIGNAL(visible(bool)), this, SLOT(setChecked(bool)));
                ToolbarInfo::item_iterator it = tbinfo->items.begin();
                ToolbarInfo::item_iterator const end = tbinfo->items.end();
                for (; it != end; ++it)
                        if (!getStatus(it->func_).unknown())
-                               panel_->addButton(bar_->addItem(*it));
+                               panel->addButton(bar_->addItem(*it));
 
                QToolButton::mousePressEvent(e);
        }
@@ -450,14 +738,13 @@ class MenuButton : public QToolButton
 private:
        GuiToolbar * bar_;
        ToolbarItem const & tbitem_;
-       IconPalette * panel_;
        bool initialized_;
 public:
        MenuButton(GuiToolbar * bar, ToolbarItem const & item)
                : QToolButton(bar), bar_(bar), tbitem_(item), initialized_(false)
        {
                setPopupMode(QToolButton::InstantPopup);
-               QString label = qt_(to_ascii(tbitem_.label_));
+               QString const label = qt_(to_ascii(tbitem_.label_));
                setToolTip(label);
                setStatusTip(label);
                setText(label);
@@ -475,7 +762,7 @@ public:
 
                initialized_ = true;
 
-               QString label = qt_(to_ascii(tbitem_.label_));
+               QString const label = qt_(to_ascii(tbitem_.label_));
                ButtonMenu * m = new ButtonMenu(label, this);
                m->setWindowTitle(label);
                m->setTearOffEnabled(true);
@@ -520,7 +807,7 @@ void GuiToolbar::add(ToolbarItem const & item)
                QToolButton * tb = new QToolButton;
                tb->setCheckable(true);
                tb->setIcon(getIcon(FuncRequest(LFUN_TABULAR_INSERT), true));
-               QString label = qt_(to_ascii(item.label_));
+               QString const label = qt_(to_ascii(item.label_));
                tb->setToolTip(label);
                tb->setStatusTip(label);
                tb->setText(label);