src/frontends/qt4/QCommandBuffer.C

   1 /**
   2  * \file QCommandBuffer.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 // Qt defines a macro 'signals' that clashes with a boost namespace.
  14 // All is well if the namespace is visible first.
  15 #include "GuiView.h"
  16
  17 #include "QCommandBuffer.h"
  18 #include "QCommandEdit.h"
  19 #include "qt_helpers.h"
  20 //Added by qt3to4:
  21 #include <QVBoxLayout>
  22 #include <QMouseEvent>
  23 #include <QPixmap>
  24 #include <QHBoxLayout>
  25 #include <QKeyEvent>
  26
  27 #include "controllers/ControlCommandBuffer.h"
  28
  29 #include "support/filetools.h"
  30
  31 #include <QListWidget>
  32 #include <QLayout>
  33 #include <QToolTip>
  34 #include <QPushButton>
  35
  36 using lyx::support::libFileSearch;
  37
  38 using std::vector;
  39 using std::string;
  40
  41 namespace lyx {
  42 namespace frontend {
  43
  44 namespace {
  45
  46 class QTempListBox : public QListWidget {
  47 public:
  48         QTempListBox() {
  49                 //setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  50                 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  51                 setWindowModality(Qt::WindowModal);
  52                 setWindowFlags(Qt::Popup);
  53                 setAttribute(Qt::WA_DeleteOnClose);
  54         }
  55 protected:
  56         void mouseReleaseEvent(QMouseEvent * e) {
  57                 if (e->x() < 0 || e->y() < 0
  58                     || e->x() > width() || e->y() > height()) {
  59                         hide();
  60                 } else {
  61                         // emit signal
  62                         itemPressed(currentItem());
  63                 }
  64         }
  65
  66         void keyPressEvent(QKeyEvent * e) {
  67                 if (e->key() == Qt::Key_Escape) {
  68                         hide();
  69                         return;
  70                 }
  71                 QListWidget::keyPressEvent(e);
  72         }
  73 };
  74
  75 } // end of anon
  76
  77
  78 QCommandBuffer::QCommandBuffer(GuiView * view, ControlCommandBuffer & control, QWidget * parent)
  79         : QWidget(parent), view_(view), controller_(control)
  80 {
  81         QPixmap qpup(toqstr(libFileSearch("images", "up", "xpm")));
  82         QPixmap qpdown(toqstr(libFileSearch("images", "down", "xpm")));
  83
  84         QVBoxLayout * top = new QVBoxLayout(this);
  85         QHBoxLayout * layout = new QHBoxLayout(0);
  86
  87         QPushButton * up = new QPushButton(qpup, "", this);
  88         up->setToolTip(qt_("Previous command"));
  89         connect(up, SIGNAL(clicked()), this, SLOT(up()));
  90         QPushButton * down = new QPushButton(qpdown, "", this);
  91         down->setToolTip(qt_("Next command"));
  92         connect(down, SIGNAL(clicked()), this, SLOT(down()));
  93
  94         edit_ = new QCommandEdit(this);
  95         edit_->setMinimumSize(edit_->sizeHint());
  96         edit_->setFocusPolicy(Qt::ClickFocus);
  97
  98         connect(edit_, SIGNAL(escapePressed()), this, SLOT(cancel()));
  99         connect(edit_, SIGNAL(returnPressed()), this, SLOT(dispatch()));
 100         connect(edit_, SIGNAL(tabPressed()), this, SLOT(complete()));
 101         connect(edit_, SIGNAL(upPressed()), this, SLOT(up()));
 102         connect(edit_, SIGNAL(downPressed()), this, SLOT(down()));
 103
 104         layout->addWidget(up, 0);
 105         layout->addWidget(down, 0);
 106         layout->addWidget(edit_, 10);
 107         top->addLayout(layout);
 108 }
 109
 110
 111
 112 void QCommandBuffer::focus_command()
 113 {
 114         edit_->setFocus();
 115 }
 116
 117
 118 void QCommandBuffer::cancel()
 119 {
 120         view_->centralWidget()->setFocus();
 121         edit_->setText("");
 122 }
 123
 124
 125 void QCommandBuffer::dispatch()
 126 {
 127         controller_.dispatch(fromqstr(edit_->text()));
 128         view_->centralWidget()->setFocus();
 129         edit_->setText("");
 130         edit_->clearFocus();
 131 }
 132
 133
 134 void QCommandBuffer::complete()
 135 {
 136         string const input = fromqstr(edit_->text());
 137         string new_input;
 138         vector<string> comp = controller_.completions(input, new_input);
 139
 140         if (comp.empty() && new_input == input) {
 141         //      show_info_suffix(qt_("[no match]"), input);
 142                 return;
 143         }
 144
 145         if (comp.empty()) {
 146                 edit_->setText(toqstr(new_input));
 147         //      show_info_suffix(("[only completion]"), new_input + ' ');
 148                 return;
 149         }
 150
 151         edit_->setText(toqstr(new_input));
 152
 153         QTempListBox * list = new QTempListBox;
 154
 155         // For some reason the scrollview's contents are larger
 156         // than the number of actual items...
 157         vector<string>::const_iterator cit = comp.begin();
 158         vector<string>::const_iterator end = comp.end();
 159         for (; cit != end; ++cit) {
 160                 list->addItem(toqstr(*cit));
 161         }
 162
 163         // width() is not big enough by a few pixels. Qt Sucks.
 164 //      list->setMinimumWidth(list->sizeHint().width() + 10);
 165
 166         list->resize(list->sizeHint());
 167         QPoint pos(edit_->mapToGlobal(QPoint(0, 0)));
 168
 169         int y = std::max(0, pos.y() - list->height());
 170
 171         list->move(pos.x(), y);
 172
 173         connect(list, SIGNAL(itemPressed(QListWidgetItem *)),
 174                 this, SLOT(complete_selected(QListWidgetItem *)));
 175
 176         list->show();
 177         list->setFocus();
 178 }
 179
 180
 181 void QCommandBuffer::complete_selected(QListWidgetItem * item)
 182 {
 183         QWidget const * widget = static_cast<QWidget const *>(sender());
 184         const_cast<QWidget *>(widget)->hide();
 185         edit_->setText(item->text() + ' ');
 186         edit_->setFocus();
 187 }
 188
 189
 190 void QCommandBuffer::up()
 191 {
 192         string const input(fromqstr(edit_->text()));
 193         string const h(controller_.historyUp());
 194
 195         if (h.empty()) {
 196         //      show_info_suffix(qt_("[Beginning of history]"), input);
 197         } else {
 198                 edit_->setText(toqstr(h));
 199         }
 200 }
 201
 202
 203 void QCommandBuffer::down()
 204 {
 205         string const input(fromqstr(edit_->text()));
 206         string const h(controller_.historyDown());
 207
 208         if (h.empty()) {
 209         //      show_info_suffix(qt_("[End of history]"), input);
 210         } else {
 211                 edit_->setText(toqstr(h));
 212         }
 213 }
 214
 215
 216 #if 0
 217 void XMiniBuffer::show_info_suffix(string const & suffix, string const & input)
 218 {
 219         stored_input_ = input;
 220         info_suffix_shown_ = true;
 221         set_input(input + ' ' + suffix);
 222         suffix_timer_->start();
 223 }
 224
 225
 226 void XMiniBuffer::suffix_timeout()
 227 {
 228         info_suffix_shown_ = false;
 229         set_input(stored_input_);
 230 }
 231
 232 #endif
 233
 234 } // namespace frontend
 235 } // namespace lyx
 236
 237 #include "QCommandBuffer_moc.cpp"