src/frontends/qt2/QMathDialog.C

   1 /**
   2  * \file QMathDialog.C
   3  * Copyright 2001 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author John Levon <moz@compsoc.man.ac.uk>
   7  */
   8
   9 #include <config.h>
  10
  11 #include "support/filetools.h"
  12 #include "gettext.h"
  13 #include "debug.h"
  14
  15 #include "QMathDialog.h"
  16 #include "QMath.h"
  17
  18 #include "ControlMath.h"
  19 #include "iconpalette.h"
  20
  21 #include <qapplication.h>
  22 #include <qwidgetstack.h>
  23 #include <qcombobox.h>
  24 #include <qpushbutton.h>
  25 #include <qlistbox.h>
  26 #include <qpixmap.h>
  27 #include <qscrollview.h>
  28 #include <qlayout.h>
  29 #include <qpopupmenu.h>
  30 #include <qcursor.h>
  31
  32 using std::min;
  33 using std::max;
  34 using std::endl;
  35
  36 class QScrollViewSingle : public QScrollView {
  37 public:
  38         QScrollViewSingle(QWidget * p)
  39                 : QScrollView(p), w_(0) {
  40                 setResizePolicy(Manual);
  41                 setHScrollBarMode(AlwaysOff);
  42                 setVScrollBarMode(AlwaysOn);
  43                 setBackgroundMode(PaletteBackground);
  44                 viewport()->setBackgroundMode(PaletteBackground);
  45         }
  46
  47         void setChild(QWidget * w) {
  48                 w_ = w;
  49                 setMinimumWidth(verticalScrollBar()->width() + w_->width() + 4);
  50                 addChild(w_);
  51         }
  52
  53 protected:
  54         virtual void resizeEvent(QResizeEvent * e) {
  55                 QScrollView::resizeEvent(e);
  56                 if (!w_)
  57                         return;
  58
  59                 w_->resize(viewport()->width(), w_->height());
  60                 // force the resize to get accurate scrollbars
  61                 qApp->processEvents();
  62                 resizeContents(w_->width(), w_->height());
  63         }
  64
  65 private:
  66         QWidget * w_;
  67 };
  68
  69 namespace {
  70         char const ** panels[] = {
  71                 latex_bop, latex_varsz, latex_brel, latex_greek, latex_arrow,
  72                 latex_dots, latex_deco, latex_misc, latex_ams_ops,
  73                 latex_ams_rel, latex_ams_nrel, latex_ams_arrows,
  74                 latex_ams_misc
  75         };
  76         int const nr_panels = sizeof(panels)/sizeof(panels[0]);
  77
  78 bool panel_initialised[nr_panels];
  79 }
  80
  81
  82 QMathDialog::QMathDialog(QMath * form)
  83         : QMathDialogBase(0, 0, false, 0),
  84         form_(form)
  85 {
  86         connect(symbolsCO, SIGNAL(activated(int)), symbolsWS, SLOT(raiseWidget(int)));
  87
  88         for (int i = 0; *function_names[i]; ++i) {
  89                 functionsLB->insertItem(function_names[i]);
  90         }
  91
  92         for (int i = 0; i < nr_panels; ++i) {
  93                 QScrollViewSingle * view = new QScrollViewSingle(symbolsWS);
  94                 symbolsWS->addWidget(view, i);
  95         }
  96
  97         // aboutToShow() only fires when != 0 in Qt 2 !
  98         symbolsWS->raiseWidget(0);
  99         addPanel(0);
 100         panel_initialised[0] = true;
 101
 102         connect(symbolsWS, SIGNAL(aboutToShow(int)), this, SLOT(showingPanel(int)));
 103
 104         space_menu_ = new QPopupMenu(spacePB);
 105         space_menu_->insertItem(_("Thin space   \\,"), 1);
 106         space_menu_->insertItem(_("Medium space \\:"), 2);
 107         space_menu_->insertItem(_("Thick space  \\;"), 3);
 108         space_menu_->insertItem(_("Quadratin space      \\quad"), 4);
 109         space_menu_->insertItem(_("Double quadratin space       \\qquad"), 5);
 110         space_menu_->insertItem(_("Negative space       \\!"), 6);
 111         connect(space_menu_, SIGNAL(activated(int)), this, SLOT(insertSpace(int)));
 112 }
 113
 114
 115 void QMathDialog::showingPanel(int num)
 116 {
 117         if (panel_initialised[num])
 118                 return;
 119
 120         addPanel(num);
 121
 122         // Qt needs to catch up. Dunno why.
 123         qApp->processEvents();
 124
 125         panel_initialised[num] = true;
 126 }
 127
 128
 129 IconPalette * QMathDialog::makePanel(QWidget * parent, char const ** entries)
 130 {
 131         IconPalette * p = new IconPalette(parent);
 132         for (int i = 0; *entries[i]; ++i) {
 133                 string xpm_name = LibFileSearch("images/math/", entries[i], "xpm");
 134                 p->add(QPixmap(xpm_name.c_str()), entries[i], string("\\") + entries[i]);
 135         }
 136         connect(p, SIGNAL(button_clicked(string)), this, SLOT(symbol_clicked(string)));
 137
 138         return p;
 139 }
 140
 141
 142 void QMathDialog::addPanel(int num)
 143 {
 144         QScrollViewSingle * view = static_cast<QScrollViewSingle*>(symbolsWS->visibleWidget());
 145         IconPalette * p = makePanel(view->viewport(), panels[num]);
 146         view->setChild(p);
 147 }
 148
 149
 150 void QMathDialog::insertSpace(int id)
 151 {
 152         string str;
 153         switch (id) {
 154                 case 1: str = ","; break;
 155                 case 2: str = ":"; break;
 156                 case 3: str = ";"; break;
 157                 case 4: str = "quad"; break;
 158                 case 5: str = "qquad"; break;
 159                 case 6: str = "!"; break;
 160         }
 161         form_->insert_symbol(str);
 162 }
 163
 164
 165 void QMathDialog::symbol_clicked(string str)
 166 {
 167         form_->insert_symbol(str);
 168 }
 169
 170
 171 void QMathDialog::fracClicked()
 172 {
 173         form_->insert_symbol("frac");
 174 }
 175
 176
 177 void QMathDialog::sqrtClicked()
 178 {
 179         form_->insert_symbol("sqrt");
 180 }
 181
 182
 183 void QMathDialog::delimiterClicked()
 184 {
 185 }
 186
 187
 188 void QMathDialog::expandClicked()
 189 {
 190         int const id = symbolsWS->id(symbolsWS->visibleWidget());
 191         IconPalette * p = makePanel(0, panels[id]);
 192         string s = "LyX: ";
 193         s += symbolsCO->text(id).latin1();
 194         p->setCaption(s.c_str());
 195         p->resize(40 * 5, p->height());
 196         p->show();
 197         p->setMaximumSize(p->width(), p->height());
 198 }
 199
 200
 201 void QMathDialog::functionSelected(const QString & str)
 202 {
 203         form_->insert_symbol(str.latin1());
 204 }
 205
 206
 207 void QMathDialog::matrixClicked()
 208 {
 209 }
 210
 211
 212 void QMathDialog::spaceClicked()
 213 {
 214         space_menu_->exec(QCursor::pos());
 215 }
 216
 217
 218 void QMathDialog::styleClicked()
 219 {
 220 }
 221
 222
 223 void QMathDialog::subscriptClicked()
 224 {
 225         form_->subscript();
 226 }
 227
 228
 229 void QMathDialog::superscriptClicked()
 230 {
 231         form_->superscript();
 232 }