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