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 "QtView.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 itemPressed(currentItem());
  62                 }
  63         }
  64
  65         void keyPressEvent(QKeyEvent * e) {
  66                 if (e->key() == Qt::Key_Escape) {
  67                         hide();
  68                         return;
  69                 }
  70                 QListWidget::keyPressEvent(e);
  71         }
  72 };
  73
  74 } // end of anon
  75
  76
  77 QCommandBuffer::QCommandBuffer(QtView * view, ControlCommandBuffer & control, QWidget * parent)
  78         : QWidget(parent), view_(view), controller_(control)
  79 {
  80         QPixmap qpup(toqstr(libFileSearch("images", "up", "xpm")));
  81         QPixmap qpdown(toqstr(libFileSearch("images", "down", "xpm")));
  82
  83         QVBoxLayout * top = new QVBoxLayout(this);
  84         QHBoxLayout * layout = new QHBoxLayout(0);
  85
  86         QPushButton * up = new QPushButton(qpup, "", this);
  87         QToolTip::add(up, qt_("Previous command"));
  88         connect(up, SIGNAL(clicked()), this, SLOT(up()));
  89         QPushButton * down = new QPushButton(qpdown, "", this);
  90         QToolTip::add(down, qt_("Next command"));
  91         connect(down, SIGNAL(clicked()), this, SLOT(down()));
  92
  93         edit_ = new QCommandEdit(this);
  94         edit_->setMinimumSize(edit_->sizeHint());
  95         edit_->setFocusPolicy(Qt::ClickFocus);
  96
  97         connect(edit_, SIGNAL(escapePressed()), this, SLOT(cancel()));
  98         connect(edit_, SIGNAL(returnPressed()), this, SLOT(dispatch()));
  99         connect(edit_, SIGNAL(tabPressed()), this, SLOT(complete()));
 100         connect(edit_, SIGNAL(upPressed()), this, SLOT(up()));
 101         connect(edit_, SIGNAL(downPressed()), this, SLOT(down()));
 102
 103         layout->addWidget(up, 0);
 104         layout->addWidget(down, 0);
 105         layout->addWidget(edit_, 10);
 106         top->addLayout(layout);
 107 }
 108
 109
 110
 111 void QCommandBuffer::focus_command()
 112 {
 113         edit_->setFocus();
 114 }
 115
 116
 117 void QCommandBuffer::cancel()
 118 {
 119         view_->centralWidget()->setFocus();
 120         edit_->setText("");
 121 }
 122
 123
 124 void QCommandBuffer::dispatch()
 125 {
 126         controller_.dispatch(fromqstr(edit_->text()));
 127         view_->centralWidget()->setFocus();
 128         edit_->setText("");
 129         edit_->clearFocus();
 130 }
 131
 132
 133 void QCommandBuffer::complete()
 134 {
 135         string const input = fromqstr(edit_->text());
 136         string new_input;
 137         vector<string> comp = controller_.completions(input, new_input);
 138
 139         if (comp.empty() && new_input == input) {
 140         //      show_info_suffix(qt_("[no match]"), input);
 141                 return;
 142         }
 143
 144         if (comp.empty()) {
 145                 edit_->setText(toqstr(new_input));
 146         //      show_info_suffix(("[only completion]"), new_input + ' ');
 147                 return;
 148         }
 149
 150         edit_->setText(toqstr(new_input));
 151
 152         QTempListBox * list = new QTempListBox;
 153
 154         // For some reason the scrollview's contents are larger
 155         // than the number of actual items...
 156         vector<string>::const_iterator cit = comp.begin();
 157         vector<string>::const_iterator end = comp.end();
 158         for (; cit != end; ++cit) {
 159                 list->addItem(toqstr(*cit));
 160         }
 161
 162         // width() is not big enough by a few pixels. Qt Sucks.
 163 //      list->setMinimumWidth(list->sizeHint().width() + 10);
 164
 165         list->resize(list->sizeHint());
 166         QPoint pos(edit_->mapToGlobal(QPoint(0, 0)));
 167
 168         int y = std::max(0, pos.y() - list->height());
 169
 170         list->move(pos.x(), y);
 171
 172         connect(list, SIGNAL(itemPressed(QListWidgetItem *)),
 173                 this, SLOT(complete_selected(QListWidgetItem *)));
 174
 175         list->show();
 176         list->setFocus();
 177 }
 178
 179
 180 void QCommandBuffer::complete_selected(QListWidgetItem * item)
 181 {
 182         QWidget const * widget = static_cast<QWidget const *>(sender());
 183         const_cast<QWidget *>(widget)->hide();
 184         edit_->setText(item->text() + ' ');
 185         edit_->setFocus();
 186 }
 187
 188
 189 void QCommandBuffer::up()
 190 {
 191         string const input(fromqstr(edit_->text()));
 192         string const h(controller_.historyUp());
 193
 194         if (h.empty()) {
 195         //      show_info_suffix(qt_("[Beginning of history]"), input);
 196         } else {
 197                 edit_->setText(toqstr(h));
 198         }
 199 }
 200
 201
 202 void QCommandBuffer::down()
 203 {
 204         string const input(fromqstr(edit_->text()));
 205         string const h(controller_.historyDown());
 206
 207         if (h.empty()) {
 208         //      show_info_suffix(qt_("[End of history]"), input);
 209         } else {
 210                 edit_->setText(toqstr(h));
 211         }
 212 }
 213
 214
 215 #if 0
 216 void XMiniBuffer::show_info_suffix(string const & suffix, string const & input)
 217 {
 218         stored_input_ = input;
 219         info_suffix_shown_ = true;
 220         set_input(input + ' ' + suffix);
 221         suffix_timer_->start();
 222 }
 223
 224
 225 void XMiniBuffer::suffix_timeout()
 226 {
 227         info_suffix_shown_ = false;
 228         set_input(stored_input_);
 229 }
 230
 231 #endif
 232
 233 } // namespace frontend
 234 } // namespace lyx