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qalculate-tde/src/qalculateunitsdialog.cpp

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/***************************************************************************
* Copyright (C) 2005 by Niklas Knutsson *
* nq@altern.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "qalculateunitsdialog.h"
#include "qalculate_tde_utils.h"
#include "qalculateeditunitdialog.h"
#include <vector>
#include <string>
#include <kpushbutton.h>
#include <tqsplitter.h>
#include <tqvbox.h>
#include <tqhbox.h>
#include <tdelistview.h>
#include <tdemessagebox.h>
#include <tdelocale.h>
#include <tqlayout.h>
#include <kcombobox.h>
#include <tqlabel.h>
#include <tqgroupbox.h>
#include <klineedit.h>
#include <kiconloader.h>
#include <tdeapplication.h>
#include <kstdguiitem.h>
extern tree_struct unit_cats;
extern std::vector<void*> ia_units;
extern PrintOptions printops;
extern EvaluationOptions evalops;
QalculateUnitsDialog::QalculateUnitsDialog(TQWidget *parent, const char *name) : KDialog(parent, name, false) {
unit_edit_dialog = NULL;
selected_category = "";
selected_unit = NULL;
selected_to_unit = NULL;
block_unit_convert = true;
TQHBoxLayout *layout = new TQHBoxLayout(this, marginHint(), spacingHint());
setCaption(i18n("Units"));
TQVBoxLayout *leftLayout = new TQVBoxLayout(layout, spacingHint());
TQSplitter *splitter = new TQSplitter(TQt::Horizontal, this);
splitter->setSizePolicy(TQSizePolicy::Expanding, TQSizePolicy::Expanding);
leftLayout->addWidget(splitter);
categoryView = new TDEListView(splitter);
categoryView->addColumn(i18n("Category"));
categoryView->setRootIsDecorated(false);
unitView = new TDEListView(splitter);
unitView->addColumn(i18n("Unit"));
unitView->addColumn(i18n("Names"));
unitView->addColumn(i18n("Base"));
unitView->setRootIsDecorated(false);
convertGroup = new TQGroupBox(3, TQt::Horizontal, i18n("Conversion"), this);
convertGroup->setSizePolicy(TQSizePolicy::Expanding, TQSizePolicy::Minimum);
convertGroup->setInsideSpacing(spacingHint());
convertGroup->setInsideMargin(spacingHint());
convertButton = new KPushButton(TQIconSet(SmallIcon("reload")), "", convertGroup);
fromEdit = new KLineEdit("1", convertGroup);
fromEdit->setAlignment(TQt::AlignRight);
fromEdit->setMinimumWidth(100);
fromLabel = new TQLabel(convertGroup);
equalsLabel = new TQLabel("=", convertGroup);
equalsLabel->setAlignment(TQt::AlignRight);
toEdit = new KLineEdit("1", convertGroup);
toEdit->setAlignment(TQt::AlignRight);
toEdit->setMinimumWidth(100);
toCombo = new KComboBox(convertGroup);
leftLayout->addWidget(convertGroup);
TQVBoxLayout *buttonLayout = new TQVBoxLayout(layout, spacingHint());
newButton = new TQPushButton(i18n("New"), this);
buttonLayout->addWidget(newButton);
editButton = new TQPushButton(i18n("Edit"), this);
editButton->setEnabled(false);
buttonLayout->addWidget(editButton);
deleteButton = new TQPushButton(i18n("Delete"), this);
deleteButton->setEnabled(false);
buttonLayout->addWidget(deleteButton);
deactivateButton = new TQPushButton(i18n("Deactivate"), this);
deactivateButton->setEnabled(false);
buttonLayout->addWidget(deactivateButton);
insertButton = new TQPushButton(i18n("Insert"), this);
insertButton->setEnabled(false);
buttonLayout->addWidget(insertButton);
convertResultButton = new TQPushButton(i18n("Convert Result"), this);
convertResultButton->setEnabled(false);
buttonLayout->addWidget(convertResultButton);
buttonLayout->addItem(new TQSpacerItem(0, 0, TQSizePolicy::Minimum, TQSizePolicy::Expanding));
helpButton = new KPushButton(KStdGuiItem::help(), this);
buttonLayout->addWidget(helpButton);
buttonClose = new KPushButton(KStdGuiItem::close(), this);
buttonLayout->addWidget(buttonClose);
fromEdit->setFocus();
resize(TQSize(675, 425).expandedTo(size()));
connect(buttonClose, SIGNAL(clicked()), this, SLOT(close()));
connect(newButton, SIGNAL(clicked()), this, SLOT(newUnit()));
connect(editButton, SIGNAL(clicked()), this, SLOT(editUnit()));
connect(deleteButton, SIGNAL(clicked()), this, SLOT(deleteUnit()));
connect(deactivateButton, SIGNAL(clicked()), this, SLOT(deactivateUnit()));
connect(insertButton, SIGNAL(clicked()), this, SLOT(insertUnit()));
connect(convertResultButton, SIGNAL(clicked()), this, SLOT(convertResult()));
connect(unitView, SIGNAL(selectionChanged()), this, SLOT(unitSelected()));
connect(unitView, SIGNAL(doubleClicked(TQListViewItem*)), this, SLOT(unitDoubleClicked(TQListViewItem*)));
connect(categoryView, SIGNAL(selectionChanged()), this, SLOT(categorySelected()));
connect(toCombo, SIGNAL(activated(int)), this, SLOT(toUnitSelected(int)));
connect(convertButton, SIGNAL(clicked()), this, SLOT(convertClicked()));
connect(fromEdit, SIGNAL(returnPressed()), this, SLOT(convert()));
connect(toEdit, SIGNAL(returnPressed()), this, SLOT(convertReversed()));
connect(fromEdit, SIGNAL(lostFocus()), this, SLOT(convert()));
connect(toEdit, SIGNAL(lostFocus()), this, SLOT(convertReversed()));
connect(helpButton, SIGNAL(clicked()), this, SLOT(slotHelp()));
}
QalculateUnitsDialog::~QalculateUnitsDialog() {
}
void QalculateUnitsDialog::slotHelp() {
TDEApplication::kApplication()->invokeHelp("qalculate-managers");
}
void QalculateUnitsDialog::updateUnitTree() {
unitItems.clear();
comboItems.clear();
categoryItems.clear();
categoryView->clear();
TQListViewItem *i = new TDEListViewItem(categoryView, i18n("All")), *i2;
categoryItems[i] = i18n("All");
i->setOpen(true);
TQString str;
tree_struct *item, *item2;
unit_cats.it = unit_cats.items.begin();
if(unit_cats.it != unit_cats.items.end()) {
item = &*unit_cats.it;
++unit_cats.it;
item->it = item->items.begin();
} else {
item = NULL;
}
str = "";
i2 = i;
while(item) {
str += "/";
str += item->item.c_str();
i = new TDEListViewItem(i2, item->item.c_str());
i->setOpen(false);
categoryItems[i] = str;
if(str == selected_category) {
categoryView->ensureItemVisible(i);
categoryView->setSelected(i, true);
}
while(item && item->it == item->items.end()) {
int str_i = str.findRev("/");
if(str_i < 0) {
str = "";
} else {
str.truncate(str_i);
}
item = item->parent;
i = i->parent();
i2 = i;
}
if(item) {
item2 = &*item->it;
if(item->it == item->items.begin())
i2 = i;
++item->it;
item = item2;
item->it = item->items.begin();
}
}
if(!unit_cats.objects.empty()) {
//add "Uncategorized" category if there are units without category
i = new TDEListViewItem(categoryView, i18n("Uncategorized"));
categoryItems[i] = i18n("Uncategorized");
if(selected_category == i18n("Uncategorized")) {
categoryView->ensureItemVisible(i);
categoryView->setSelected(i, true);
}
}
if(!ia_units.empty()) {
//add "Inactive" category if there are inactive units
i = new TDEListViewItem(categoryView, i18n("Inactive"));
categoryItems[i] = i18n("Inactive");
if(selected_category == i18n("Inactive")) {
categoryView->ensureItemVisible(i);
categoryView->setSelected(i, true);
}
}
if(!categoryView->selectedItem()) {
//if no category has been selected (previously selected has been renamed/deleted), select "All"
selected_category = i18n("All");
TQListViewItemIterator it(categoryView);
if(it.current())
categoryView->setSelected(it.current(), true);
}
}
#define UPDATE_SELECTED_UNIT TQListViewItem *i = unitView->selectedItem(); if(!i) return; selected_unit = unitItems[i]; if(!selected_unit) return;
#define CHECK_IF_UNIT_STILL_THERE if(!CALCULATOR->stillHasUnit(selected_unit)) {KMessageBox::error(this, i18n("Unit does not exist anymore.")); emit unitsChanged(); return;}
void QalculateUnitsDialog::insertUnit() {
UPDATE_SELECTED_UNIT
CHECK_IF_UNIT_STILL_THERE
emit insertRequest(selected_unit);
}
void QalculateUnitsDialog::convertResult() {
UPDATE_SELECTED_UNIT
CHECK_IF_UNIT_STILL_THERE
emit convertRequest(selected_unit);
}
void QalculateUnitsDialog::deactivateUnit() {
UPDATE_SELECTED_UNIT
CHECK_IF_UNIT_STILL_THERE
selected_unit->setActive(!selected_unit->isActive());
emit unitsChanged();
}
void QalculateUnitsDialog::deleteUnit() {
UPDATE_SELECTED_UNIT
CHECK_IF_UNIT_STILL_THERE
if(selected_unit->isLocal()) {
if(selected_unit->isUsedByOtherUnits()) {
//do not delete units that are used by other units
KMessageBox::error(this, i18n("Cannot delete unit as it is needed by other units."));
return;
}
//ensure that all references are removed in Calculator
selected_unit->destroy();
//update menus and trees
emit unitsChanged();
}
}
void QalculateUnitsDialog::editUnit() {
UPDATE_SELECTED_UNIT
CHECK_IF_UNIT_STILL_THERE
if(!unit_edit_dialog) {
unit_edit_dialog = new QalculateEditUnitDialog(this);
}
Unit *u = unit_edit_dialog->editUnit(TQString::null, selected_unit);
if(u) {
selected_unit = u;
if(!u->isActive()) {
selected_category = i18n("Inactive");
} else if(u->category().empty()) {
selected_category = i18n("Uncategorized");
} else {
selected_category = "/";
selected_category += u->category().c_str();
}
emit unitsChanged();
}
}
void QalculateUnitsDialog::newUnit() {
if(!unit_edit_dialog) {
unit_edit_dialog = new QalculateEditUnitDialog(this);
}
Unit *u = NULL;
if(selected_category.isEmpty() || selected_category[0] != '/') {
u = unit_edit_dialog->editUnit();
} else {
TQString str = selected_category;
str.remove(0, 1);
u = unit_edit_dialog->editUnit(str);
}
if(u) {
selected_unit = u;
if(!u->isActive()) {
selected_category = i18n("Inactive");
} else if(u->category().empty()) {
selected_category = i18n("Uncategorized");
} else {
selected_category = "/";
selected_category += u->category().c_str();
}
emit unitsChanged();
}
}
void QalculateUnitsDialog::unitDoubleClicked(TQListViewItem*i) {
selected_unit = unitItems[i];
if(!selected_unit)
return;
CHECK_IF_UNIT_STILL_THERE
if(!unit_edit_dialog) {
unit_edit_dialog = new QalculateEditUnitDialog(this);
}
Unit *u = unit_edit_dialog->editUnit(TQString::null, selected_unit);
if(u) {
selected_unit = u;
if(!u->isActive()) {
selected_category = i18n("Inactive");
} else if(u->category().empty()) {
selected_category = i18n("Uncategorized");
} else {
selected_category = "/";
selected_category += u->category().c_str();
}
emit unitsChanged();
}
}
void QalculateUnitsDialog::unitSelected() {
TQListViewItem *selected = unitView->selectedItem();
if(selected) {
Unit *u = unitItems[selected];
if(!CALCULATOR->stillHasUnit(u)) {
KMessageBox::error(this, i18n("Unit does not exist anymore."));
selected_unit = NULL;
emit unitsChanged();
return;
}
//remember selection
selected_unit = u;
editButton->setEnabled(true);
insertButton->setEnabled(u->isActive());
convertResultButton->setEnabled(true);
deleteButton->setEnabled(u->isLocal());
deactivateButton->setEnabled(true);
convertGroup->setEnabled(true);
fromLabel->setText(u->print(true, printops.abbreviate_names, printops.use_unicode_signs, &can_display_unicode_string_function, (void*) fromLabel).c_str());
if(u->isActive())
deactivateButton->setText(i18n("Deactivate"));
else
deactivateButton->setText(i18n("Activate"));
} else {
editButton->setEnabled(false);
insertButton->setEnabled(false);
deleteButton->setEnabled(false);
deactivateButton->setEnabled(false);
convertResultButton->setEnabled(false);
convertGroup->setEnabled(false);
selected_unit = NULL;
}
if(!block_unit_convert) convert();
}
void QalculateUnitsDialog::addUnitTreeItem(Unit *u) {
TQString snames, sbase;
//display name, plural name and short name in the second column
AliasUnit *au;
for(size_t i = 1; i <= u->countNames(); i++) {
if(i > 1) snames += " / ";
snames += u->getName(i).name.c_str();
}
//depending on unit type display relation to base unit(s)
switch(u->subtype()) {
case SUBTYPE_COMPOSITE_UNIT: {
snames = "";
sbase = ((CompositeUnit*) u)->print(false, true, printops.use_unicode_signs, &can_display_unicode_string_function, (void*) unitView).c_str();
break;
}
case SUBTYPE_ALIAS_UNIT: {
au = (AliasUnit*) u;
sbase = au->firstBaseUnit()->preferredDisplayName(printops.abbreviate_names, printops.use_unicode_signs, false, false, &can_display_unicode_string_function, (void*) unitView).name.c_str();
if(au->firstBaseExponent() != 1) {
sbase += POWER;
sbase += TQString::number(au->firstBaseExponent());
}
break;
}
case SUBTYPE_BASE_UNIT: {
sbase = "";
break;
}
}
TQListViewItem *i = new TDEListViewItem(unitView, u->title(true).c_str(), snames, sbase);
unitItems[i] = u;
if(u == selected_unit) {
unitView->setSelected(i, true);
}
}
void QalculateUnitsDialog::categorySelected() {
block_unit_convert = true;
TQListViewItem *selected = categoryView->selectedItem();
bool no_cat = false, b_all = false, b_inactive = false;
unitView->clear();
unitItems.clear();
if(!selected) {
selected_category = "";
unitSelected();
return;
}
selected_category = categoryItems[selected];
if(selected_category == i18n("All")) {
b_all = true;
} else if(selected_category == i18n("Uncategorized")) {
no_cat = true;
} else if(selected_category == i18n("Inactive")) {
b_inactive = true;
}
if(!b_all && !no_cat && !b_inactive && selected_category[0] == '/') {
std::string str = selected_category.ascii();
str.erase(str.begin());
for(size_t i = 0; i < CALCULATOR->units.size(); i++) {
if(CALCULATOR->units[i]->isActive() && CALCULATOR->units[i]->category().substr(0, selected_category.length() - 1) == str) {
addUnitTreeItem(CALCULATOR->units[i]);
}
}
} else {
std::string str = selected_category.ascii();
for(size_t i = 0; i < CALCULATOR->units.size(); i++) {
if((b_inactive && !CALCULATOR->units[i]->isActive()) || (CALCULATOR->units[i]->isActive() && (b_all || (no_cat && CALCULATOR->units[i]->category().empty()) || (!b_inactive && CALCULATOR->units[i]->category() == str)))) {
addUnitTreeItem(CALCULATOR->units[i]);
}
}
}
if(!selected_unit || !unitView->selectedItem()) {
TQListViewItemIterator it(unitView);
if(it.current())
unitView->setSelected(it.current(), true);
}
//generate convert to menu
toCombo->blockSignals(true);
toCombo->clear();
comboItems.clear();
int i = 0, h = -1;
//add all units in units tree to menu
TQListViewItemIterator it(unitView);
Unit *u;
while(it.current()) {
u = unitItems[it.current()];
if(!selected_to_unit) {
selected_to_unit = u;
}
if(u) {
toCombo->insertItem(it.current()->text(0));
comboItems.push_back(u);
if(selected_to_unit == u)
h = i;
}
i++;
++it;
}
//if no items were added to the menu, reset selected unit
if(i == 0) {
selected_to_unit = NULL;
} else {
//if no menu item was selected, select the first
if(h < 0) {
h = 0;
TQListViewItemIterator it2(unitView);
if(it2.current()) {
selected_to_unit = unitItems[it2.current()];
} else {
selected_to_unit = NULL;
}
}
toCombo->setCurrentItem(h);
}
toCombo->blockSignals(false);
block_unit_convert = false;
//update conversion display
convert();
}
void QalculateUnitsDialog::toUnitSelected(int index) {
if(index < (int) comboItems.size()) {
selected_to_unit = comboItems[index];
convert();
}
}
void QalculateUnitsDialog::convertClicked() {
if(toEdit->hasFocus()) {
convertReversed();
} else {
convert();
}
}
void QalculateUnitsDialog::convert() {
if(selected_unit && selected_to_unit) {
//determine conversion direction
bool b = false;
if(selected_unit == selected_to_unit) {
toEdit->setText(fromEdit->text());
} else {
EvaluationOptions eo;
eo.approximation = APPROXIMATION_APPROXIMATE;
eo.parse_options.angle_unit = evalops.parse_options.angle_unit;
PrintOptions po;
po.is_approximate = &b;
po.number_fraction_format = FRACTION_DECIMAL;
MathStructure v_mstruct = CALCULATOR->convert(CALCULATOR->unlocalizeExpression(fromEdit->text().ascii(), evalops.parse_options), selected_unit, selected_to_unit, eo);
toEdit->setText(v_mstruct.print(po).c_str());
b = b || v_mstruct.isApproximate();
}
if(b && printops.use_unicode_signs && can_display_unicode_string_function(SIGN_ALMOST_EQUAL, (void*) equalsLabel)) {
equalsLabel->setText(SIGN_ALMOST_EQUAL);
} else {
equalsLabel->setText("=");
}
}
}
void QalculateUnitsDialog::convertReversed() {
if(selected_unit && selected_to_unit) {
bool b = false;
if(selected_unit == selected_to_unit) {
fromEdit->setText(toEdit->text());
} else {
EvaluationOptions eo;
eo.approximation = APPROXIMATION_APPROXIMATE;
eo.parse_options.angle_unit = evalops.parse_options.angle_unit;
PrintOptions po;
po.is_approximate = &b;
po.number_fraction_format = FRACTION_DECIMAL;
MathStructure v_mstruct = CALCULATOR->convert(CALCULATOR->unlocalizeExpression(toEdit->text().ascii(), evalops.parse_options), selected_to_unit, selected_unit, eo);
fromEdit->setText(v_mstruct.print(po).c_str());
b = b || v_mstruct.isApproximate();
}
if(b && printops.use_unicode_signs && can_display_unicode_string_function(SIGN_ALMOST_EQUAL, (void*) equalsLabel)) {
equalsLabel->setText(SIGN_ALMOST_EQUAL);
} else {
equalsLabel->setText("=");
}
}
}
void QalculateUnitsDialog::keyPressEvent(TQKeyEvent *e) {
if(e->key() == Key_Return) {
convertClicked();
e->accept();
return;
}
KDialog::keyPressEvent(e);
}
#include "qalculateunitsdialog.moc"
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