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This move out the GuiLayoutBox class out of GuiToolbar where it was a mess. The new LayoutBox is less of a mess now but still a mess.

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We need a proper LayoutModel class.



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@30995 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Abdelrazak Younes 2009-08-12 21:51:10 +00:00
parent 797f13806d
commit 5f2429b4e2
7 changed files with 815 additions and 716 deletions
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641
src/frontends/qt4/GuiToolbar.cpp
View File

@ -23,51 +23,24 @@
#include "GuiView.h"
#include "IconPalette.h"
#include "InsertTableWidget.h"
#include "LayoutBox.h"
#include "qt_helpers.h"
#include "Toolbars.h"
#include "Buffer.h"
#include "BufferParams.h"
#include "BufferView.h"
#include "Cursor.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
#include "KeyMap.h"
#include "Layout.h"
#include "LyXFunc.h"
#include "LyXRC.h"
#include "Paragraph.h"
#include "TextClass.h"
#include "insets/InsetText.h"
#include "support/debug.h"
#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include <QAbstractItemDelegate>
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QComboBox>
#include <QFontMetrics>
#include <QHeaderView>
#include <QItemDelegate>
#include <QKeyEvent>
#include <QList>
#include <QListView>
#include <QPainter>
#include <QPixmap>
#include <QSettings>
#include <QSortFilterProxyModel>
#include <QStandardItem>
#include <QStandardItemModel>
#include <QString>
#include <QTextDocument>
#include <QTextFrame>
#include <QToolBar>
#include <QToolButton>
#include <QVariant>
#include "support/lassert.h"
@ -77,616 +50,6 @@ using namespace lyx::support;
namespace lyx {
namespace frontend {
/////////////////////////////////////////////////////////////////////
//
// GuiLayoutBox
//
/////////////////////////////////////////////////////////////////////
class LayoutItemDelegate : public QItemDelegate {
public:
///
explicit LayoutItemDelegate(QObject * parent = 0)
: QItemDelegate(parent)
{}
///
void paint(QPainter * painter, QStyleOptionViewItem const & option,
QModelIndex const & index) const
{
QStyleOptionViewItem opt = option;
// default background
painter->fillRect(opt.rect, opt.palette.color(QPalette::Base));
// category header?
if (lyxrc.group_layouts) {
QSortFilterProxyModel const * model
= static_cast<QSortFilterProxyModel const *>(index.model());
QString stdCat = category(*model->sourceModel(), 0);
QString cat = category(*index.model(), index.row());
// not the standard layout and not the same as in the previous line?
if (stdCat != cat
&& (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
painter->save();
// draw unselected background
QStyle::State state = opt.state;
opt.state = opt.state & ~QStyle::State_Selected;
drawBackground(painter, opt, index);
opt.state = state;
// draw category header
drawCategoryHeader(painter, opt,
category(*index.model(), index.row()));
// move rect down below header
opt.rect.setTop(opt.rect.top() + headerHeight(opt));
painter->restore();
}
}
QItemDelegate::paint(painter, opt, index);
}
///
void drawDisplay(QPainter * painter, QStyleOptionViewItem const & opt,
const QRect & /*rect*/, const QString & text ) const
{
QString utext = underlineFilter(text);
// 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(utext);
QTextFrameFormat fmt = doc.rootFrame()->frameFormat();
fmt.setMargin(0);
doc.rootFrame()->setFrameFormat(fmt);
painter->translate(opt.rect.x() + 5,
opt.rect.y() + (opt.rect.height() - opt.fontMetrics.height()) / 2);
doc.documentLayout()->draw(painter, context);
painter->restore();
}
///
QSize sizeHint(QStyleOptionViewItem const & opt,
QModelIndex const & index) const
{
GuiLayoutBox * combo = static_cast<GuiLayoutBox *>(parent());
QSortFilterProxyModel const * model
= static_cast<QSortFilterProxyModel const *>(index.model());
QSize size = QItemDelegate::sizeHint(opt, index);
/// QComboBox uses the first row height to estimate the
/// complete popup height during QComboBox::showPopup().
/// To avoid scrolling we have to sneak in space for the headers.
/// So we tweak this value accordingly. It's not nice, but the
/// only possible way it seems.
if (lyxrc.group_layouts && index.row() == 0 && combo->inShowPopup_) {
int itemHeight = size.height();
// we have to show \c cats many headers:
unsigned cats = combo->visibleCategories_;
// and we have \c n items to distribute the needed space over
unsigned n = combo->model()->rowCount();
// so the needed average height (rounded upwards) is:
size.setHeight((headerHeight(opt) * cats + itemHeight * n + n - 1) / n);
return size;
}
// Add space for the category headers here?
// Not for the standard layout though.
QString stdCat = category(*model->sourceModel(), 0);
QString cat = category(*index.model(), index.row());
if (lyxrc.group_layouts && stdCat != cat
&& (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
size.setHeight(size.height() + headerHeight(opt));
}
return size;
}
private:
///
QString category(QAbstractItemModel const & model, int row) const
{
return model.data(model.index(row, 2), Qt::DisplayRole).toString();
}
///
int headerHeight(QStyleOptionViewItem const & opt) const
{
return opt.fontMetrics.height() * 8 / 10;
}
///
void drawCategoryHeader(QPainter * painter, QStyleOptionViewItem const & opt,
QString const & category) const
{
// slightly blended color
QColor lcol = opt.palette.text().color();
lcol.setAlpha(127);
painter->setPen(lcol);
// set 80% scaled, bold font
QFont font = opt.font;
font.setBold(true);
font.setWeight(QFont::Black);
font.setPointSize(opt.font.pointSize() * 8 / 10);
painter->setFont(font);
// draw the centered text
QFontMetrics fm(font);
int w = fm.width(category);
int x = opt.rect.x() + (opt.rect.width() - w) / 2;
int y = opt.rect.y() + fm.ascent();
int left = x;
int right = x + w;
painter->drawText(x, y, category);
// the vertical position of the line: middle of lower case chars
int ymid = y - 1 - fm.xHeight() / 2; // -1 for the baseline
// draw the horizontal line
if (!category.isEmpty()) {
painter->drawLine(opt.rect.x(), ymid, left - 1, ymid);
painter->drawLine(right + 1, ymid, opt.rect.right(), ymid);
} else
painter->drawLine(opt.rect.x(), ymid, opt.rect.right(), ymid);
}
///
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);
LASSERT(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;
}
};
class GuiLayoutFilterModel : public QSortFilterProxyModel {
public:
///
GuiLayoutFilterModel(QObject * parent = 0)
: QSortFilterProxyModel(parent)
{}
///
void triggerLayoutChange()
{
layoutAboutToBeChanged();
layoutChanged();
}
};
GuiLayoutBox::GuiLayoutBox(GuiToolbar * bar, GuiView & owner)
: owner_(owner), bar_(bar), lastSel_(-1),
layoutItemDelegate_(new LayoutItemDelegate(this)),
visibleCategories_(0), inShowPopup_(false)
{
setSizeAdjustPolicy(QComboBox::AdjustToContents);
setFocusPolicy(Qt::ClickFocus);
setMinimumWidth(sizeHint().width());
setMaxVisibleItems(100);
// set the layout model with two columns
// 1st: translated layout names
// 2nd: raw layout names
model_ = new QStandardItemModel(0, 2, this);
filterModel_ = new GuiLayoutFilterModel(this);
filterModel_->setSourceModel(model_);
setModel(filterModel_);
// for the filtering we have to intercept characters
view()->installEventFilter(this);
view()->setItemDelegateForColumn(0, layoutItemDelegate_);
QObject::connect(this, SIGNAL(activated(int)),
this, SLOT(selected(int)));
QObject::connect(bar_, SIGNAL(iconSizeChanged(QSize)),
this, SLOT(setIconSize(QSize)));
owner_.setLayoutDialog(this);
updateContents(true);
}
void GuiLayoutBox::setFilter(QString const & s)
{
bool enabled = view()->updatesEnabled();
view()->setUpdatesEnabled(false);
// remember old selection
int sel = currentIndex();
if (sel != -1)
lastSel_ = filterModel_->mapToSource(filterModel_->index(sel, 0)).row();
filter_ = s;
filterModel_->setFilterRegExp(charFilterRegExp(filter_));
countCategories();
// 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()) {
// call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
// the hack in the item delegate to make space for the headers.
// We do not call our implementation of showPopup because that
// would reset the filter again. This is only needed if the user clicks
// on the QComboBox.
LASSERT(!inShowPopup_, /**/);
inShowPopup_ = true;
QComboBox::showPopup();
inShowPopup_ = false;
// The item delegate hack is off again. So trigger a relayout of the popup.
filterModel_->triggerLayoutChange();
if (!s.isEmpty())
owner_.message(bformat(_("Filtering layouts with \"%1$s\". "
"Press ESC to remove filter."),
qstring_to_ucs4(s)));
else
owner_.message(_("Enter characters to filter the layout list."));
}
view()->setUpdatesEnabled(enabled);
}
void GuiLayoutBox::countCategories()
{
int n = filterModel_->rowCount();
visibleCategories_ = 0;
if (n == 0 || !lyxrc.group_layouts)
return;
// skip the "Standard" category
QString prevCat = model_->index(0, 2).data().toString();
// count categories
for (int i = 0; i < n; ++i) {
QString cat = filterModel_->index(i, 2).data().toString();
if (cat != prevCat)
++visibleCategories_;
prevCat = cat;
}
}
QString GuiLayoutBox::charFilterRegExp(QString const & filter)
{
QString re;
for (int i = 0; i < filter.length(); ++i) {
QChar c = filter[i];
if (c.isLower())
re += ".*[" + QRegExp::escape(c) + QRegExp::escape(c.toUpper()) + "]";
else
re += ".*" + QRegExp::escape(c);
}
return re;
}
void GuiLayoutBox::resetFilter()
{
setFilter(QString());
}
void GuiLayoutBox::showPopup()
{
owner_.message(_("Enter characters to filter the layout list."));
bool enabled = view()->updatesEnabled();
view()->setUpdatesEnabled(false);
resetFilter();
// call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
// the hack in the item delegate to make space for the headers.
LASSERT(!inShowPopup_, /**/);
inShowPopup_ = true;
QComboBox::showPopup();
inShowPopup_ = false;
// The item delegate hack is off again. So trigger a relayout of the popup.
filterModel_->triggerLayoutChange();
view()->setUpdatesEnabled(enabled);
}
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::setIconSize(QSize size)
{
#ifdef Q_WS_MACX
bool small = size.height() < 20;
setAttribute(Qt::WA_MacSmallSize, small);
setAttribute(Qt::WA_MacNormalSize, !small);
#else
(void)size; // suppress warning
#endif
}
void GuiLayoutBox::set(docstring const & layout)
{
resetFilter();
if (!text_class_)
return;
Layout const & lay = (*text_class_)[layout];
QString newLayout = toqstr(lay.name());
// If the layout is obsolete, use the new one instead.
docstring const & obs = lay.obsoleted_by();
if (!obs.empty())
newLayout = toqstr(obs);
int const curItem = currentIndex();
QModelIndex const mindex =
filterModel_->mapToSource(filterModel_->index(curItem, 1));
QString const & currentLayout = model_->itemFromIndex(mindex)->text();
if (newLayout == currentLayout) {
LYXERR(Debug::GUI, "Already had " << newLayout << " selected.");
return;
}
QList<QStandardItem *> r = model_->findItems(newLayout, Qt::MatchExactly, 1);
if (r.empty()) {
LYXERR0("Trying to select non existent layout type " << newLayout);
return;
}
setCurrentIndex(filterModel_->mapFromSource(r.first()->index()).row());
}
void GuiLayoutBox::addItemSort(docstring const & item, docstring const & category,
bool sorted, bool sortedByCat, bool unknown)
{
QString qitem = toqstr(item);
// FIXME This is wrong for RTL, I'd suppose.
QString titem = toqstr(translateIfPossible(item) +
(unknown ? _(" (unknown)") : from_ascii("")));
QString qcat = toqstr(translateIfPossible(category));
QList<QStandardItem *> row;
row.append(new QStandardItem(titem));
row.append(new QStandardItem(qitem));
row.append(new QStandardItem(qcat));
// the first entry is easy
int const end = model_->rowCount();
if (end == 0) {
model_->appendRow(row);
return;
}
// find category
int i = 0;
if (sortedByCat) {
while (i < end && model_->item(i, 2)->text() != qcat)
++i;
}
// skip the Standard layout
if (i == 0)
++i;
// the simple unsorted case
if (!sorted) {
if (sortedByCat) {
// jump to the end of the category group
while (i < end && model_->item(i, 2)->text() == qcat)
++i;
model_->insertRow(i, row);
} else
model_->appendRow(row);
return;
}
// find row to insert the item, after the separator if it exists
if (i < end) {
// find alphabetic position
while (i != end
&& model_->item(i, 0)->text().localeAwareCompare(titem) < 0
&& (!sortedByCat || model_->item(i, 2)->text() == qcat))
++i;
}
model_->insertRow(i, row);
}
void GuiLayoutBox::updateContents(bool reset)
{
resetFilter();
Buffer const * buffer = owner_.buffer();
if (!buffer) {
model_->clear();
setEnabled(false);
text_class_ = 0;
inset_ = 0;
return;
}
// 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().innerText()->inset());
if (!reset && text_class_ == text_class && inset_ == inset) {
set(owner_.view()->cursor().innerParagraph().layout().name());
return;
}
inset_ = inset;
text_class_ = text_class;
model_->clear();
DocumentClass::const_iterator lit = text_class_->begin();
DocumentClass::const_iterator len = text_class_->end();
for (; lit != len; ++lit) {
docstring const & name = lit->name();
bool const useEmpty = inset_->forcePlainLayout() || inset_->usePlainLayout();
// if this inset requires the empty layout, we skip the default
// layout
if (name == text_class_->defaultLayoutName() && inset_ && useEmpty)
continue;
// if it doesn't require the empty layout, we skip it
if (name == text_class_->plainLayoutName() && inset_ && !useEmpty)
continue;
// obsoleted layouts are skipped as well
if (!lit->obsoleted_by().empty())
continue;
addItemSort(name, lit->category(), lyxrc.sort_layouts,
lyxrc.group_layouts, lit->isUnknown());
}
set(owner_.view()->cursor().innerParagraph().layout().name());
countCategories();
// needed to recalculate size hint
hide();
setMinimumWidth(sizeHint().width());
setEnabled(!buffer->isReadonly() &&
lyx::getStatus(FuncRequest(LFUN_LAYOUT)).enabled());
show();
}
void GuiLayoutBox::selected(int index)
{
// get selection
QModelIndex mindex = filterModel_->mapToSource(filterModel_->index(index, 1));
docstring layoutName = qstring_to_ucs4(model_->itemFromIndex(mindex)->text());
owner_.setFocus();
if (!text_class_) {
updateContents(false);
resetFilter();
return;
}
// find corresponding text class
if (text_class_->hasLayout(layoutName)) {
FuncRequest const func(LFUN_LAYOUT, layoutName, FuncRequest::TOOLBAR);
theLyXFunc().setLyXView(&owner_);
lyx::dispatch(func);
updateContents(false);
resetFilter();
return;
}
LYXERR0("ERROR (layoutSelected): layout " << layoutName << " not found!");
}
/////////////////////////////////////////////////////////////////////
//
// GuiToolbar
//
/////////////////////////////////////////////////////////////////////
GuiToolbar::GuiToolbar(ToolbarInfo const & tbinfo, GuiView & owner)
: QToolBar(toqstr(tbinfo.gui_name), &owner), visibility_(0),
allowauto_(false), owner_(owner), layout_(0), command_buffer_(0),
@ -863,7 +226,7 @@ void GuiToolbar::add(ToolbarItem const & item)
addSeparator();
break;
case ToolbarItem::LAYOUTS:
layout_ = new GuiLayoutBox(this, owner_);
layout_ = new LayoutBox(this, owner_);
addWidget(layout_);
break;
case ToolbarItem::MINIBUFFER:

75
src/frontends/qt4/GuiToolbar.h
View File

@ -18,15 +18,10 @@
#include "Session.h"
#include <QAbstractProxyModel>
#include <QComboBox>
#include <QList>
#include <QToolBar>
#include <QToolButton>
class QSortFilterProxyModel;
class QStandardItemModel;
namespace lyx {
class DocumentClass;
@ -39,76 +34,10 @@ class GuiCommandBuffer;
class GuiLayoutFilterModel;
class GuiToolbar;
class GuiView;
class LayoutItemDelegate;
class LayoutBox;
class ToolbarInfo;
class ToolbarItem;
class GuiLayoutBox : public QComboBox
{
Q_OBJECT
public:
GuiLayoutBox(GuiToolbar * bar, GuiView &);
/// select the right layout in the combobox.
void set(docstring const & layout);
/// Populate the layout combobox.
void updateContents(bool reset);
/// Add Item to Layout box according to sorting settings from preferences
void addItemSort(docstring const & item, docstring const & category,
bool sorted, bool sortedByCat, bool unknown);
///
void showPopup();
///
bool eventFilter(QObject * o, QEvent * e);
///
QString const & filter() { return filter_; }
private Q_SLOTS:
///
void selected(int index);
///
void setIconSize(QSize size);
private:
friend class LayoutItemDelegate;
///
void resetFilter();
///
void setFilter(QString const & s);
///
QString charFilterRegExp(QString const & filter);
///
void countCategories();
///
GuiView & owner_;
///
GuiToolbar * bar_;
///
DocumentClass const * text_class_;
///
Inset const * inset_;
/// the layout model: 1st column translated, 2nd column raw layout name
QStandardItemModel * model_;
/// the proxy model filtering \c model_
GuiLayoutFilterModel * filterModel_;
/// the (model-) index of the last successful selection
int lastSel_;
/// the character filter
QString filter_;
///
LayoutItemDelegate * layoutItemDelegate_;
///
unsigned visibleCategories_;
///
bool inShowPopup_;
};
class MenuButton : public QToolButton
{
Q_OBJECT
@ -193,7 +122,7 @@ private:
///
GuiView & owner_;
///
GuiLayoutBox * layout_;
LayoutBox * layout_;
///
GuiCommandBuffer * command_buffer_;
///

5
src/frontends/qt4/GuiView.cpp
View File

@ -25,6 +25,7 @@
#include "GuiKeySymbol.h"
#include "GuiToc.h"
#include "GuiToolbar.h"
#include "LayoutBox.h"
#include "Menus.h"
#include "TocModel.h"
@ -266,7 +267,7 @@ public:
* FIXME: replace that with a proper model so that we are not limited
* to only one dialog.
*/
GuiLayoutBox * layout_;
LayoutBox * layout_;
///
map<string, Inset *> open_insets_;
@ -1067,7 +1068,7 @@ void GuiView::removeWorkArea(GuiWorkArea * wa)
}
void GuiView::setLayoutDialog(GuiLayoutBox * layout)
void GuiView::setLayoutDialog(LayoutBox * layout)
{
d.layout_ = layout;
}

4
src/frontends/qt4/GuiView.h
View File

@ -36,7 +36,7 @@ class Cursor;
namespace frontend {
class Dialog;
class GuiLayoutBox;
class LayoutBox;
class GuiToolbar;
class GuiWorkArea;
class TabWorkArea;
@ -82,7 +82,7 @@ public:
bool dispatch(FuncRequest const & cmd);
///
void setLayoutDialog(GuiLayoutBox *);
void setLayoutDialog(LayoutBox *);
/// \return the buffer currently shown in this window
Buffer * buffer();

732
src/frontends/qt4/LayoutBox.cpp Normal file
View File

@ -0,0 +1,732 @@
/**
* \file qt4/LayoutBox.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
* \author John Levon
* \author Jean-Marc Lasgouttes
* \author Angus Leeming
* \author Stefan Schimanski
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "LayoutBox.h"
#include "Action.h"
#include "GuiView.h"
#include "qt_helpers.h"
#include "Toolbars.h"
#include "Buffer.h"
#include "BufferParams.h"
#include "BufferView.h"
#include "Cursor.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
#include "Layout.h"
#include "LyXFunc.h"
#include "LyXRC.h"
#include "Paragraph.h"
#include "TextClass.h"
#include "insets/InsetText.h"
#include "support/debug.h"
#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include <QAbstractItemDelegate>
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QComboBox>
#include <QFontMetrics>
#include <QHeaderView>
#include <QItemDelegate>
#include <QKeyEvent>
#include <QList>
#include <QListView>
#include <QPainter>
#include <QPixmap>
#include <QSettings>
#include <QSortFilterProxyModel>
#include <QStandardItem>
#include <QStandardItemModel>
#include <QString>
#include <QTextDocument>
#include <QTextFrame>
#include <QToolBar>
#include <QVariant>
#include "support/lassert.h"
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace frontend {
class LayoutItemDelegate : public QItemDelegate {
public:
///
explicit LayoutItemDelegate(LayoutBox * layout)
: QItemDelegate(layout), layout_(layout)
{}
///
void paint(QPainter * painter, QStyleOptionViewItem const & option,
QModelIndex const & index) const;
///
void drawDisplay(QPainter * painter, QStyleOptionViewItem const & opt,
const QRect & /*rect*/, const QString & text ) const;
///
QSize sizeHint(QStyleOptionViewItem const & opt,
QModelIndex const & index) const;
private:
///
void drawCategoryHeader(QPainter * painter, QStyleOptionViewItem const & opt,
QString const & category) const;
///
QString underlineFilter(QString const & s) const;
///
LayoutBox * layout_;
};
class GuiLayoutFilterModel : public QSortFilterProxyModel {
public:
///
GuiLayoutFilterModel(QObject * parent = 0)
: QSortFilterProxyModel(parent)
{}
///
void triggerLayoutChange()
{
layoutAboutToBeChanged();
layoutChanged();
}
};
/////////////////////////////////////////////////////////////////////
//
// LayoutBox::Private
//
/////////////////////////////////////////////////////////////////////
struct LayoutBox::Private
{
Private(LayoutBox * parent, GuiView & gv) : p(parent), owner_(gv),
lastSel_(-1), visibleCategories_(0), inShowPopup_(false),
layoutItemDelegate_(new LayoutItemDelegate(parent)),
// set the layout model with two columns
// 1st: translated layout names
// 2nd: raw layout names
model_(new QStandardItemModel(0, 2, p)),
filterModel_(new GuiLayoutFilterModel(p))
{
filterModel_->setSourceModel(model_);
}
void resetFilter() { setFilter(QString()); }
///
void setFilter(QString const & s);
///
void countCategories();
///
LayoutBox * p;
///
GuiView & owner_;
///
DocumentClass const * text_class_;
///
Inset const * inset_;
/// the layout model: 1st column translated, 2nd column raw layout name
QStandardItemModel * model_;
/// the proxy model filtering \c model_
GuiLayoutFilterModel * filterModel_;
/// the (model-) index of the last successful selection
int lastSel_;
/// the character filter
QString filter_;
///
LayoutItemDelegate * layoutItemDelegate_;
///
unsigned visibleCategories_;
///
bool inShowPopup_;
};
static QString category(QAbstractItemModel const & model, int row)
{
return model.data(model.index(row, 2), Qt::DisplayRole).toString();
}
static int headerHeight(QStyleOptionViewItem const & opt)
{
return opt.fontMetrics.height() * 8 / 10;
}
void LayoutItemDelegate::paint(QPainter * painter, QStyleOptionViewItem const & option,
QModelIndex const & index) const
{
QStyleOptionViewItem opt = option;
// default background
painter->fillRect(opt.rect, opt.palette.color(QPalette::Base));
// category header?
if (lyxrc.group_layouts) {
QSortFilterProxyModel const * model =
static_cast<QSortFilterProxyModel const *>(index.model());
QString stdCat = category(*model->sourceModel(), 0);
QString cat = category(*index.model(), index.row());
// not the standard layout and not the same as in the previous line?
if (stdCat != cat
&& (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
painter->save();
// draw unselected background
QStyle::State state = opt.state;
opt.state = opt.state & ~QStyle::State_Selected;
drawBackground(painter, opt, index);
opt.state = state;
// draw category header
drawCategoryHeader(painter, opt,
category(*index.model(), index.row()));
// move rect down below header
opt.rect.setTop(opt.rect.top() + headerHeight(opt));
painter->restore();
}
}
QItemDelegate::paint(painter, opt, index);
}
void LayoutItemDelegate::drawDisplay(QPainter * painter, QStyleOptionViewItem const & opt,
const QRect & /*rect*/, const QString & text ) const
{
QString utext = underlineFilter(text);
// 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(utext);
QTextFrameFormat fmt = doc.rootFrame()->frameFormat();
fmt.setMargin(0);
doc.rootFrame()->setFrameFormat(fmt);
painter->translate(opt.rect.x() + 5,
opt.rect.y() + (opt.rect.height() - opt.fontMetrics.height()) / 2);
doc.documentLayout()->draw(painter, context);
painter->restore();
}
QSize LayoutItemDelegate::sizeHint(QStyleOptionViewItem const & opt,
QModelIndex const & index) const
{
QSortFilterProxyModel const * model =
static_cast<QSortFilterProxyModel const *>(index.model());
QSize size = QItemDelegate::sizeHint(opt, index);
/// QComboBox uses the first row height to estimate the
/// complete popup height during QComboBox::showPopup().
/// To avoid scrolling we have to sneak in space for the headers.
/// So we tweak this value accordingly. It's not nice, but the
/// only possible way it seems.
if (lyxrc.group_layouts && index.row() == 0 && layout_->d->inShowPopup_) {
int itemHeight = size.height();
// we have to show \c cats many headers:
unsigned cats = layout_->d->visibleCategories_;
// and we have \c n items to distribute the needed space over
unsigned n = layout_->model()->rowCount();
// so the needed average height (rounded upwards) is:
size.setHeight((headerHeight(opt) * cats + itemHeight * n + n - 1) / n);
return size;
}
// Add space for the category headers here?
// Not for the standard layout though.
QString stdCat = category(*model->sourceModel(), 0);
QString cat = category(*index.model(), index.row());
if (lyxrc.group_layouts && stdCat != cat
&& (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
size.setHeight(size.height() + headerHeight(opt));
}
return size;
}
void LayoutItemDelegate::drawCategoryHeader(QPainter * painter, QStyleOptionViewItem const & opt,
QString const & category) const
{
// slightly blended color
QColor lcol = opt.palette.text().color();
lcol.setAlpha(127);
painter->setPen(lcol);
// set 80% scaled, bold font
QFont font = opt.font;
font.setBold(true);
font.setWeight(QFont::Black);
font.setPointSize(opt.font.pointSize() * 8 / 10);
painter->setFont(font);
// draw the centered text
QFontMetrics fm(font);
int w = fm.width(category);
int x = opt.rect.x() + (opt.rect.width() - w) / 2;
int y = opt.rect.y() + fm.ascent();
int left = x;
int right = x + w;
painter->drawText(x, y, category);
// the vertical position of the line: middle of lower case chars
int ymid = y - 1 - fm.xHeight() / 2; // -1 for the baseline
// draw the horizontal line
if (!category.isEmpty()) {
painter->drawLine(opt.rect.x(), ymid, left - 1, ymid);
painter->drawLine(right + 1, ymid, opt.rect.right(), ymid);
} else
painter->drawLine(opt.rect.x(), ymid, opt.rect.right(), ymid);
}
QString LayoutItemDelegate::underlineFilter(QString const & s) const
{
QString const & f = layout_->filter();
if (f.isEmpty())
return s;
// step through data item and put "(x)" for every matching character
QString r;
int lastp = -1;
layout_->filter();
for (int i = 0; i < f.length(); ++i) {
int p = s.indexOf(f[i], lastp + 1, Qt::CaseInsensitive);
LASSERT(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;
}
static QString charFilterRegExp(QString const & filter)
{
QString re;
for (int i = 0; i < filter.length(); ++i) {
QChar c = filter[i];
if (c.isLower())
re += ".*[" + QRegExp::escape(c) + QRegExp::escape(c.toUpper()) + "]";
else
re += ".*" + QRegExp::escape(c);
}
return re;
}
void LayoutBox::Private::setFilter(QString const & s)
{
bool enabled = p->view()->updatesEnabled();
p->view()->setUpdatesEnabled(false);
// remember old selection
int sel = p->currentIndex();
if (sel != -1)
lastSel_ = filterModel_->mapToSource(filterModel_->index(sel, 0)).row();
filter_ = s;
filterModel_->setFilterRegExp(charFilterRegExp(filter_));
countCategories();
// restore old selection
if (lastSel_ != -1) {
QModelIndex i = filterModel_->mapFromSource(model_->index(lastSel_, 0));
if (i.isValid())
p->setCurrentIndex(i.row());
}
// Workaround to resize to content size
// FIXME: There must be a better way. The QComboBox::AdjustToContents)
// does not help.
if (p->view()->isVisible()) {
// call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
// the hack in the item delegate to make space for the headers.
// We do not call our implementation of showPopup because that
// would reset the filter again. This is only needed if the user clicks
// on the QComboBox.
LASSERT(!inShowPopup_, /**/);
inShowPopup_ = true;
p->showPopup();
inShowPopup_ = false;
// The item delegate hack is off again. So trigger a relayout of the popup.
filterModel_->triggerLayoutChange();
if (!s.isEmpty())
owner_.message(bformat(_("Filtering layouts with \"%1$s\". "
"Press ESC to remove filter."),
qstring_to_ucs4(s)));
else
owner_.message(_("Enter characters to filter the layout list."));
}
p->view()->setUpdatesEnabled(enabled);
}
LayoutBox::LayoutBox(QToolBar * bar, GuiView & owner)
: d(new Private(this, owner))
{
setSizeAdjustPolicy(QComboBox::AdjustToContents);
setFocusPolicy(Qt::ClickFocus);
setMinimumWidth(sizeHint().width());
setMaxVisibleItems(100);
setModel(d->filterModel_);
// for the filtering we have to intercept characters
view()->installEventFilter(this);
view()->setItemDelegateForColumn(0, d->layoutItemDelegate_);
QObject::connect(this, SIGNAL(activated(int)),
this, SLOT(selected(int)));
QObject::connect(bar, SIGNAL(iconSizeChanged(QSize)),
this, SLOT(setIconSize(QSize)));
d->owner_.setLayoutDialog(this);
updateContents(true);
}
void LayoutBox::Private::countCategories()
{
int n = filterModel_->rowCount();
visibleCategories_ = 0;
if (n == 0 || !lyxrc.group_layouts)
return;
// skip the "Standard" category
QString prevCat = model_->index(0, 2).data().toString();
// count categories
for (int i = 0; i < n; ++i) {
QString cat = filterModel_->index(i, 2).data().toString();
if (cat != prevCat)
++visibleCategories_;
prevCat = cat;
}
}
void LayoutBox::showPopup()
{
d->owner_.message(_("Enter characters to filter the layout list."));
bool enabled = view()->updatesEnabled();
view()->setUpdatesEnabled(false);
d->resetFilter();
// call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
// the hack in the item delegate to make space for the headers.
LASSERT(!d->inShowPopup_, /**/);
d->inShowPopup_ = true;
QComboBox::showPopup();
d->inShowPopup_ = false;
// The item delegate hack is off again. So trigger a relayout of the popup.
d->filterModel_->triggerLayoutChange();
view()->setUpdatesEnabled(enabled);
}
bool LayoutBox::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 && !d->filter_.isEmpty()) {
d->resetFilter();
return true;
}
break;
case Qt::Key_Backspace:
if (!modified) {
// cut off one character
d->setFilter(d->filter_.left(d->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
d->setFilter(d->filter_ + s);
return true;
}
break;
}
return QComboBox::eventFilter(o, e);
}
void LayoutBox::setIconSize(QSize size)
{
#ifdef Q_WS_MACX
bool small = size.height() < 20;
setAttribute(Qt::WA_MacSmallSize, small);
setAttribute(Qt::WA_MacNormalSize, !small);
#else
(void)size; // suppress warning
#endif
}
void LayoutBox::set(docstring const & layout)
{
d->resetFilter();
if (!d->text_class_)
return;
Layout const & lay = (*d->text_class_)[layout];
QString newLayout = toqstr(lay.name());
// If the layout is obsolete, use the new one instead.
docstring const & obs = lay.obsoleted_by();
if (!obs.empty())
newLayout = toqstr(obs);
int const curItem = currentIndex();
QModelIndex const mindex =
d->filterModel_->mapToSource(d->filterModel_->index(curItem, 1));
QString const & currentLayout = d->model_->itemFromIndex(mindex)->text();
if (newLayout == currentLayout) {
LYXERR(Debug::GUI, "Already had " << newLayout << " selected.");
return;
}
QList<QStandardItem *> r = d->model_->findItems(newLayout, Qt::MatchExactly, 1);
if (r.empty()) {
LYXERR0("Trying to select non existent layout type " << newLayout);
return;
}
setCurrentIndex(d->filterModel_->mapFromSource(r.first()->index()).row());
}
void LayoutBox::addItemSort(docstring const & item, docstring const & category,
bool sorted, bool sortedByCat, bool unknown)
{
QString qitem = toqstr(item);
// FIXME This is wrong for RTL, I'd suppose.
QString titem = toqstr(translateIfPossible(item) +
(unknown ? _(" (unknown)") : from_ascii("")));
QString qcat = toqstr(translateIfPossible(category));
QList<QStandardItem *> row;
row.append(new QStandardItem(titem));
row.append(new QStandardItem(qitem));
row.append(new QStandardItem(qcat));
// the first entry is easy
int const end = d->model_->rowCount();
if (end == 0) {
d->model_->appendRow(row);
return;
}
// find category
int i = 0;
if (sortedByCat) {
while (i < end && d->model_->item(i, 2)->text() != qcat)
++i;
}
// skip the Standard layout
if (i == 0)
++i;
// the simple unsorted case
if (!sorted) {
if (sortedByCat) {
// jump to the end of the category group
while (i < end && d->model_->item(i, 2)->text() == qcat)
++i;
d->model_->insertRow(i, row);
} else
d->model_->appendRow(row);
return;
}
// find row to insert the item, after the separator if it exists
if (i < end) {
// find alphabetic position
while (i != end
&& d->model_->item(i, 0)->text().localeAwareCompare(titem) < 0
&& (!sortedByCat || d->model_->item(i, 2)->text() == qcat))
++i;
}
d->model_->insertRow(i, row);
}
void LayoutBox::updateContents(bool reset)
{
d->resetFilter();
Buffer const * buffer = d->owner_.buffer();
if (!buffer) {
d->model_->clear();
setEnabled(false);
d->text_class_ = 0;
d->inset_ = 0;
return;
}
// 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 =
&(d->owner_.view()->cursor().innerText()->inset());
if (!reset && d->text_class_ == text_class && d->inset_ == inset) {
set(d->owner_.view()->cursor().innerParagraph().layout().name());
return;
}
d->inset_ = inset;
d->text_class_ = text_class;
d->model_->clear();
DocumentClass::const_iterator lit = d->text_class_->begin();
DocumentClass::const_iterator len = d->text_class_->end();
for (; lit != len; ++lit) {
docstring const & name = lit->name();
bool const useEmpty = d->inset_->forcePlainLayout() || d->inset_->usePlainLayout();
// if this inset requires the empty layout, we skip the default
// layout
if (name == d->text_class_->defaultLayoutName() && d->inset_ && useEmpty)
continue;
// if it doesn't require the empty layout, we skip it
if (name == d->text_class_->plainLayoutName() && d->inset_ && !useEmpty)
continue;
// obsoleted layouts are skipped as well
if (!lit->obsoleted_by().empty())
continue;
addItemSort(name, lit->category(), lyxrc.sort_layouts,
lyxrc.group_layouts, lit->isUnknown());
}
set(d->owner_.view()->cursor().innerParagraph().layout().name());
d->countCategories();
// needed to recalculate size hint
hide();
setMinimumWidth(sizeHint().width());
setEnabled(!buffer->isReadonly() &&
lyx::getStatus(FuncRequest(LFUN_LAYOUT)).enabled());
show();
}
void LayoutBox::selected(int index)
{
// get selection
QModelIndex mindex = d->filterModel_->mapToSource(
d->filterModel_->index(index, 1));
docstring layoutName = qstring_to_ucs4(
d->model_->itemFromIndex(mindex)->text());
d->owner_.setFocus();
if (!d->text_class_) {
updateContents(false);
d->resetFilter();
return;
}
// find corresponding text class
if (d->text_class_->hasLayout(layoutName)) {
FuncRequest const func(LFUN_LAYOUT, layoutName, FuncRequest::TOOLBAR);
theLyXFunc().setLyXView(&d->owner_);
lyx::dispatch(func);
updateContents(false);
d->resetFilter();
return;
}
LYXERR0("ERROR (layoutSelected): layout " << layoutName << " not found!");
}
QString const & LayoutBox::filter() const
{
return d->filter_;
}
} // namespace frontend
} // namespace lyx
#include "moc_LayoutBox.cpp"

72
src/frontends/qt4/LayoutBox.h Normal file
View File

@ -0,0 +1,72 @@
// -*- C++ -*-
/**
* \file LayoutBox.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
* \author John Levon
* \author Jean-Marc Lasgouttes
* \author Angus Leeming
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#ifndef LYX_LAYOUT_BOX_H
#define LYX_LAYOUT_BOX_H
#include "support/strfwd.h"
#include <QComboBox>
class QToolBar;
namespace lyx {
class DocumentClass;
class Inset;
namespace frontend {
class GuiView;
class LayoutItemDelegate;
class LayoutBox : public QComboBox
{
Q_OBJECT
public:
LayoutBox(QToolBar *, GuiView &);
/// select the right layout in the combobox.
void set(docstring const & layout);
/// Populate the layout combobox.
void updateContents(bool reset);
/// Add Item to Layout box according to sorting settings from preferences
void addItemSort(docstring const & item, docstring const & category,
bool sorted, bool sortedByCat, bool unknown);
///
void showPopup();
///
bool eventFilter(QObject * o, QEvent * e);
///
QString const & filter() const;
private Q_SLOTS:
///
void selected(int index);
///
void setIconSize(QSize size);
private:
friend class LayoutItemDelegate;
struct Private;
Private * const d;
};
} // namespace frontend
} // namespace lyx
#endif // LYX_LAYOUT_BOX_H

2
src/frontends/qt4/Makefile.am
View File

@ -132,6 +132,7 @@ SOURCEFILES = \
LengthCombo.cpp \
LyXFileDialog.cpp \
LaTeXHighlighter.cpp \
LayoutBox.cpp \
Menus.cpp \
PanelStack.cpp \
qt_helpers.cpp \
@ -227,6 +228,7 @@ MOCHEADER = \
GuiWrap.h \
IconPalette.h \
InsertTableWidget.h \
LayoutBox.h \
LengthCombo.h \
LyXFileDialog.h \
Menus.h \