lyx_mirror/src/frontends/qt4/GuiGraphics.cpp

/**
 * \file GuiGraphics.cpp
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Angus Leeming
 * \author John Levon
 * \author Edwin Leuven
 * \author Herbert Vo<EFBFBD>
 * \author Richard Heck
 *
 * Full author contact details are available in file CREDITS.
 */

#include <config.h>

#include "GuiGraphics.h"

#include "LengthCombo.h"
#include "Length.h"
#include "LyXRC.h"
#include "qt_helpers.h"
#include "Validator.h"

#include "FuncRequest.h"

#include "graphics/GraphicsCache.h"
#include "graphics/GraphicsCacheItem.h"
#include "graphics/GraphicsImage.h"

#include "insets/InsetGraphicsParams.h"

#include "support/convert.h"
#include "support/debug.h"
#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/os.h"
#include "support/Package.h"
#include "support/types.h"

#include <QCheckBox>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QValidator>

#include <cmath>
#include <utility>

using namespace std;
using namespace lyx::support;

namespace {

// These are the strings that are stored in the LyX file and which
// correspond to the LaTeX identifiers shown in the comments at the
// end of each line.
char const * const rorigin_lyx_strs[] = {
	// the LaTeX default is leftBaseline
	"",
	"leftTop",  "leftBottom", "leftBaseline", // lt lb lB
	"center", "centerTop", "centerBottom", "centerBaseline", // c ct cb cB
	"rightTop", "rightBottom", "rightBaseline" }; // rt rb rB

// These are the strings, corresponding to the above, that the GUI should
// use. Note that they can/should be translated.
char const * const rorigin_gui_strs[] = {
	N_("Default"),
	N_("Top left"), N_("Bottom left"), N_("Baseline left"),
	N_("Center"), N_("Top center"), N_("Bottom center"), N_("Baseline center"),
	N_("Top right"), N_("Bottom right"), N_("Baseline right") };

size_t const rorigin_size = sizeof(rorigin_lyx_strs) / sizeof(char *);

} // namespace anon


namespace lyx {
namespace frontend {

//FIXME setAutoTextCB should really take an argument, as indicated, that
//determines what text is to be written for "auto". But making
//that work involves more extensive revisions than we now want
//to make, since "auto" also appears in updateContents() (see
//GuiGraphics.cpp).
//The right way to do this, I think, would be to define a class
//checkedLengthSet (and a partnering labeledLengthSete) that encapsulated
//the checkbox, line edit, and length combo together, and then made e.g.
//lengthToWidgets, widgetsToLength, etc, all public methods of that class.
//Perhaps even the validator could be exposed through it.
/**
 * sets a checkbox-line edit-length combo group, using "text" if the
 * checkbox is unchecked and clearing the line edit if it previously
 * said "text".
*/
static void setAutoTextCB(QCheckBox * checkBox, QLineEdit * lineEdit,
	LengthCombo * lengthCombo/*, string text = "auto"*/)
{
	if (!checkBox->isChecked())
		lengthToWidgets(lineEdit, lengthCombo,
				"auto", lengthCombo->currentLengthItem());
	else if (lineEdit->text() == "auto")
		lengthToWidgets(lineEdit, lengthCombo, string(),
				lengthCombo->currentLengthItem());
}


template<class Pair>
vector<typename Pair::first_type> getFirst(vector<Pair> const & pr)
{
	size_t const n = pr.size();
	vector<typename Pair::first_type> tmp(n);
	for (size_t i = 0; i != n; ++i)
		tmp[i] = pr[i].first;
	return tmp;
}


///
template<class Pair>
vector<typename Pair::second_type> getSecond(vector<Pair> const & pr)
{
	size_t const n = pr.size();
	vector<typename Pair::second_type> tmp(n);
	for (size_t i = 0; i != n; ++i)
		tmp[i] = pr[i].second;
	return tmp;
}


/// The (tranlated) GUI string and it's LaTeX equivalent.
typedef pair<docstring, string> RotationOriginPair;
///
vector<RotationOriginPair> getRotationOriginData()
{
	static vector<RotationOriginPair> data;
	if (!data.empty())
		return data;

	data.resize(rorigin_size);
	for (size_type i = 0; i < rorigin_size; ++i) {
		data[i] = make_pair(_(rorigin_gui_strs[i]),
				    rorigin_lyx_strs[i]);
	}

	return data;
}



GuiGraphics::GuiGraphics(GuiView & lv)
	: GuiDialog(lv, "graphics", qt_("Graphics"))
{
	setupUi(this);
	
	//main buttons
	connect(okPB, SIGNAL(clicked()), this, SLOT(slotOK()));
	connect(applyPB, SIGNAL(clicked()), this, SLOT(slotApply()));
	connect(closePB, SIGNAL(clicked()), this, SLOT(slotClose()));
	connect(restorePB, SIGNAL(clicked()), this, SLOT(slotRestore()));

	//graphics pane
	connect(filename, SIGNAL(textChanged(const QString &)),
		this, SLOT(change_adaptor()));
	connect(WidthCB, SIGNAL( clicked()),
		this, SLOT(change_adaptor()));
	connect(HeightCB, SIGNAL( clicked()),
		this, SLOT(change_adaptor()));
	connect(Width, SIGNAL(textChanged(const QString &)),
		this, SLOT(change_adaptor()));
	connect(Height, SIGNAL(textChanged(const QString &)),
		this, SLOT(change_adaptor()));
	connect(heightUnit, SIGNAL(selectionChanged(lyx::Length::UNIT)),
		this, SLOT(change_adaptor()));
	connect(widthUnit, SIGNAL(selectionChanged(lyx::Length::UNIT)),
		this, SLOT(change_adaptor()));
	connect(aspectratio, SIGNAL(stateChanged(int)),
		this, SLOT(change_adaptor()));
	connect(angle, SIGNAL(textChanged(const QString &)),
		this, SLOT(change_adaptor()));
	connect(origin, SIGNAL(activated(int)),
		this, SLOT(change_adaptor()));
	connect(scaleCB, SIGNAL(clicked()),
		this, SLOT(change_adaptor()));
	connect(Scale, SIGNAL(textChanged(const QString &)),
		this, SLOT(change_adaptor()));
	connect(rotateOrderCB, SIGNAL(clicked()),
		this, SLOT(change_adaptor()));

	filename->setValidator(new PathValidator(true, filename));
	setFocusProxy(filename);

	QDoubleValidator * scaleValidator = new DoubleAutoValidator(Scale);
	scaleValidator->setBottom(0);
	scaleValidator->setDecimals(256); //I guess that will do
	Scale->setValidator(scaleValidator);
	Height->setValidator(unsignedLengthAutoValidator(Height));
	Width->setValidator(unsignedLengthAutoValidator(Width));
	angle->setValidator(new QDoubleValidator(-360, 360, 2, angle));

	//clipping pane
	connect(clip, SIGNAL(stateChanged(int)),
		this, SLOT(change_adaptor()));
	connect(lbY, SIGNAL(textChanged(const QString&)),
		this, SLOT(change_bb()));
	connect(lbYunit, SIGNAL(activated(int)),
		this, SLOT(change_bb()));
	connect(rtY, SIGNAL(textChanged(const QString&)),
		this, SLOT(change_bb()));
	connect(rtYunit, SIGNAL(activated(int)),
		this, SLOT(change_bb()));
	connect(lbX, SIGNAL(textChanged(const QString&)),
		this, SLOT(change_bb()));
	connect(lbXunit, SIGNAL(activated(int)),
		this, SLOT(change_bb()));
	connect(rtX, SIGNAL(textChanged(const QString&)),
		this, SLOT(change_bb()));
	connect(rtXunit, SIGNAL(activated(int)),
		this, SLOT(change_bb()));
	connect(getPB, SIGNAL(clicked()),
		this, SLOT(change_adaptor()));

	lbX->setValidator(new QDoubleValidator(lbX));
	lbY->setValidator(new QDoubleValidator(lbY));
	rtX->setValidator(new QDoubleValidator(rtX));
	rtY->setValidator(new QDoubleValidator(rtY));

	//extra options pane
	connect(latexoptions, SIGNAL(textChanged(const QString&)),
		this, SLOT(change_adaptor()));
	connect(draftCB, SIGNAL(stateChanged(int)),
		this, SLOT(change_adaptor()));
	connect(unzipCB, SIGNAL(stateChanged(int)),
		this, SLOT(change_adaptor()));
	// FIXME: we should connect to clicked() when we move to Qt 4.2	because
	// the toggled(bool) signal is also trigged when we update the widgets
	// (rgh-4/07) this isn't as much or a problem as it was, because we're now
	// using blockSignals() to keep from triggering that signal when we call
	// setChecked(). Note, too, that clicked() would get called whenever it
	// is clicked, even right clicked (I think), not just whenever it is
	// toggled.
	connect(displayGB, SIGNAL(toggled(bool)),
		this, SLOT(change_adaptor()));
	connect(showCB, SIGNAL(currentIndexChanged(int)),
		this, SLOT(change_adaptor()));
	connect(displayscale, SIGNAL(textChanged(const QString&)),
		this, SLOT(change_adaptor()));
	displayscale->setValidator(new QIntValidator(displayscale));

	bc().setPolicy(ButtonPolicy::NoRepeatedApplyReadOnlyPolicy);
	bc().setOK(okPB);
	bc().setApply(applyPB);
	bc().setRestore(restorePB);
	bc().setCancel(closePB);

	bc().addReadOnly(latexoptions);
	bc().addReadOnly(filenameL);
	bc().addReadOnly(filename);
	bc().addReadOnly(browsePB);
	bc().addReadOnly(unzipCB);
	bc().addReadOnly(bbFrame);
	bc().addReadOnly(draftCB);
	bc().addReadOnly(clip);
	bc().addReadOnly(unzipCB);
	bc().addReadOnly(displayGB);
	bc().addReadOnly(sizeGB);
	bc().addReadOnly(rotationGB);
	bc().addReadOnly(latexoptions);
	bc().addReadOnly(getPB);
	bc().addReadOnly(rotateOrderCB);

	// initialize the length validator
	bc().addCheckedLineEdit(Scale, scaleCB);
	bc().addCheckedLineEdit(Width, WidthCB);
	bc().addCheckedLineEdit(Height, HeightCB);
	bc().addCheckedLineEdit(displayscale, scaleLA);
	bc().addCheckedLineEdit(angle, angleL);
	bc().addCheckedLineEdit(lbX, xL);
	bc().addCheckedLineEdit(lbY, yL);
	bc().addCheckedLineEdit(rtX, xL_2);
	bc().addCheckedLineEdit(rtY, yL_2);
	bc().addCheckedLineEdit(filename, filenameL);
}


void GuiGraphics::change_adaptor()
{
	changed();
}


void GuiGraphics::change_bb()
{
	bbChanged = true;
	LYXERR(Debug::GRAPHICS, "[bb_Changed set to true]");
	changed();
}


void GuiGraphics::on_browsePB_clicked()
{
	QString const str = browse(filename->text());
	if (!str.isEmpty()) {
		filename->setText(str);
		changed();
	}
}


void GuiGraphics::on_getPB_clicked()
{
	getBB();
}


void GuiGraphics::setAutoText()
{
	if (scaleCB->isChecked())
		return;
	if (!Scale->isEnabled() && Scale->text() != "100")
		Scale->setText(QString("auto"));

	setAutoTextCB(WidthCB, Width, widthUnit);
	setAutoTextCB(HeightCB, Height, heightUnit);
}


void GuiGraphics::on_scaleCB_toggled(bool setScale)
{
	Scale->setEnabled(setScale);
	if (setScale) {
		Scale->setText("100");
		Scale->setFocus(Qt::OtherFocusReason);
	}

	WidthCB->setDisabled(setScale);
	WidthCB->blockSignals(true);
	WidthCB->setChecked(false);
	WidthCB->blockSignals(false);
	Width->setEnabled(false);
	widthUnit->setEnabled(false);

	HeightCB->setDisabled(setScale);
	HeightCB->blockSignals(true);
	HeightCB->setChecked(false);
	HeightCB->blockSignals(false);
	Height->setEnabled(false);
	heightUnit->setEnabled(false);

	aspectratio->setDisabled(true);
	aspectratio->setChecked(true);

	rotateOrderCB->setEnabled((WidthCB->isChecked() ||
				 HeightCB->isChecked() ||
				 scaleCB->isChecked()) &&
				 (angle->text() != "0"));

	setAutoText();
}


void GuiGraphics::on_WidthCB_toggled(bool setWidth)
{
	Width->setEnabled(setWidth);
	widthUnit->setEnabled(setWidth);
	if (setWidth)
		Width->setFocus(Qt::OtherFocusReason);

	bool const setHeight = HeightCB->isChecked();
	aspectratio->setEnabled(setWidth && setHeight);
	aspectratio->blockSignals(true);
	aspectratio->setChecked(!(setWidth && setHeight));
	aspectratio->blockSignals(false);

	scaleCB->setEnabled(!setWidth && !setHeight);
	//already will be unchecked, so don't need to do that
	Scale->setEnabled((!setWidth && !setHeight) //=scaleCB->isEnabled()
			&& scaleCB->isChecked()); //should be false, but let's check
	rotateOrderCB->setEnabled((setWidth || setHeight ||
				 scaleCB->isChecked()) &&
				 (angle->text() != "0"));

	setAutoText();
}


void GuiGraphics::on_HeightCB_toggled(bool setHeight)
{
	Height->setEnabled(setHeight);
	heightUnit->setEnabled(setHeight);
	if (setHeight)
		Height->setFocus(Qt::OtherFocusReason);

	bool const setWidth = WidthCB->isChecked();
	aspectratio->setEnabled(setWidth && setHeight);
	aspectratio->blockSignals(true);
	aspectratio->setChecked(!(setWidth && setHeight));
	aspectratio->blockSignals(false);

	scaleCB->setEnabled(!setWidth && !setHeight);
	//already unchecked
	Scale->setEnabled((!setWidth && !setHeight) //=scaleCB->isEnabled()
		&& scaleCB->isChecked()); //should be false
	rotateOrderCB->setEnabled((setWidth || setHeight ||
				 scaleCB->isChecked()) &&
				 (angle->text() != "0"));

	setAutoText();
}


void GuiGraphics::on_angle_textChanged(const QString & filename)
{
	rotateOrderCB->setEnabled((WidthCB->isChecked() ||
				 HeightCB->isChecked() ||
				 scaleCB->isChecked()) &&
				 (filename != "0"));
}

// returns the number of the string s in the vector v
static int itemNumber(const vector<string> & v, string const & s)
{
	vector<string>::const_iterator cit =
		    find(v.begin(), v.end(), s);
	return (cit != v.end()) ? int(cit - v.begin()) : 0;
}


void GuiGraphics::updateContents()
{
	static char const * const bb_units[] = { "bp", "cm", "mm", "in" };
	size_t const bb_size = sizeof(bb_units) / sizeof(bb_units[0]);

	vector<string> const units = vector<string>(bb_units, bb_units + bb_size);
	lbXunit->clear();
	lbYunit->clear();
	rtXunit->clear();
	rtYunit->clear();
	for (vector<string>::const_iterator it = units.begin();
	    it != units.end(); ++it) {
		lbXunit->addItem(toqstr(*it));
		lbYunit->addItem(toqstr(*it));
		rtXunit->addItem(toqstr(*it));
		rtYunit->addItem(toqstr(*it));
	}

	InsetGraphicsParams & igp = params_;

	// set the right default unit
	Length::UNIT unitDefault = Length::CM;
	switch (lyxrc.default_papersize) {
		case PAPER_USLETTER:
		case PAPER_USLEGAL:
		case PAPER_USEXECUTIVE:
			unitDefault = Length::IN;
			break;
		default:
			break;
	}

	lyxerr << bufferFilepath();
	string const name =
		igp.filename.outputFilename(fromqstr(bufferFilepath()));
	filename->setText(toqstr(name));

	// set the bounding box values
	if (igp.bb.empty()) {
		string const bb = readBoundingBox(igp.filename.absFilename());
		// the values from the file always have the bigpoint-unit bp
		lbX->setText(toqstr(token(bb, ' ', 0)));
		lbY->setText(toqstr(token(bb, ' ', 1)));
		rtX->setText(toqstr(token(bb, ' ', 2)));
		rtY->setText(toqstr(token(bb, ' ', 3)));
		lbXunit->setCurrentIndex(0);
		lbYunit->setCurrentIndex(0);
		rtXunit->setCurrentIndex(0);
		rtYunit->setCurrentIndex(0);
		bbChanged = false;
	} else {
		// get the values from the inset
		Length anyLength;
		string const xl = token(igp.bb, ' ', 0);
		string const yl = token(igp.bb, ' ', 1);
		string const xr = token(igp.bb, ' ', 2);
		string const yr = token(igp.bb, ' ', 3);
		if (isValidLength(xl, &anyLength)) {
			lbX->setText(toqstr(convert<string>(anyLength.value())));
			string const unit = unit_name[anyLength.unit()];
			lbXunit->setCurrentIndex(itemNumber(units, unit));
		} else {
			lbX->setText(toqstr(xl));
		}
		if (isValidLength(yl, &anyLength)) {
			lbY->setText(toqstr(convert<string>(anyLength.value())));
			string const unit = unit_name[anyLength.unit()];
			lbYunit->setCurrentIndex(itemNumber(units, unit));
		} else {
			lbY->setText(toqstr(xl));
		}
		if (isValidLength(xr, &anyLength)) {
			rtX->setText(toqstr(convert<string>(anyLength.value())));
			string const unit = unit_name[anyLength.unit()];
			rtXunit->setCurrentIndex(itemNumber(units, unit));
		} else {
			rtX->setText(toqstr(xl));
		}
		if (isValidLength(yr, &anyLength)) {
			rtY->setText(toqstr(convert<string>(anyLength.value())));
			string const unit = unit_name[anyLength.unit()];
			rtYunit->setCurrentIndex(itemNumber(units, unit));
		} else {
			rtY->setText(toqstr(xl));
		}
		bbChanged = true;
	}

	// Update the draft and clip mode
	draftCB->setChecked(igp.draft);
	clip->setChecked(igp.clip);
	unzipCB->setChecked(igp.noUnzip);

	int item = 0;
	switch (igp.display) {
		case graphics::DefaultDisplay: item = 0; break;
		case graphics::MonochromeDisplay: item = 1; break;
		case graphics::GrayscaleDisplay: item = 2; break;
		case graphics::ColorDisplay: item = 3; break;
		case graphics::NoDisplay: item = 0; break;
	}
	showCB->setCurrentIndex(item);
	displayscale->setText(toqstr(convert<string>(igp.lyxscale)));
	displayGB->setChecked(igp.display != graphics::NoDisplay);

	// the output section (width/height)

	Scale->setText(toqstr(igp.scale));
	//igp.scale defaults to 100, so we treat it as empty
	bool const scaleChecked = !igp.scale.empty() && igp.scale != "100";
	scaleCB->blockSignals(true);
	scaleCB->setChecked(scaleChecked);
	scaleCB->blockSignals(false);
	Scale->setEnabled(scaleChecked);

	lengthAutoToWidgets(Width, widthUnit, igp.width,
		unitDefault);
	bool const widthChecked = !Width->text().isEmpty() &&
		Width->text() != "auto";
	WidthCB->blockSignals(true);
	WidthCB->setChecked(widthChecked);
	WidthCB->blockSignals(false);
	Width->setEnabled(widthChecked);
	widthUnit->setEnabled(widthChecked);

	lengthAutoToWidgets(Height, heightUnit, igp.height,
		unitDefault);
	bool const heightChecked = !Height->text().isEmpty()
		&& Height->text() != "auto";
	HeightCB->blockSignals(true);
	HeightCB->setChecked(heightChecked);
	HeightCB->blockSignals(false);
	Height->setEnabled(heightChecked);
	heightUnit->setEnabled(heightChecked);

	scaleCB->setEnabled(!widthChecked && !heightChecked);
	WidthCB->setEnabled(!scaleChecked);
	HeightCB->setEnabled(!scaleChecked);
	aspectratio->setEnabled(widthChecked && heightChecked);

	setAutoText();

	angle->setText(toqstr(igp.rotateAngle));
	rotateOrderCB->setChecked(igp.scaleBeforeRotation);

	rotateOrderCB->setEnabled( (widthChecked || heightChecked || scaleChecked)
		&& igp.rotateAngle != "0");

	origin->clear();

	vector<RotationOriginPair> origindata = getRotationOriginData();
	vector<docstring> const origin_lang = getFirst(origindata);
	origin_ltx = getSecond(origindata);

	for (vector<docstring>::const_iterator it = origin_lang.begin();
	    it != origin_lang.end(); ++it)
		origin->addItem(toqstr(*it));

	if (!igp.rotateOrigin.empty())
		origin->setCurrentIndex(itemNumber(origin_ltx, igp.rotateOrigin));
	else
		origin->setCurrentIndex(0);

	// latex section
	latexoptions->setText(toqstr(igp.special));
}


void GuiGraphics::applyView()
{
	InsetGraphicsParams & igp = params_;

	igp.filename.set(fromqstr(filename->text()), fromqstr(bufferFilepath()));

	// the bb section
	igp.bb.erase();
	if (bbChanged) {
		string bb;
		string lbXs = fromqstr(lbX->text());
		string lbYs = fromqstr(lbY->text());
		string rtXs = fromqstr(rtX->text());
		string rtYs = fromqstr(rtY->text());
		int bb_sum =
			convert<int>(lbXs) + convert<int>(lbYs) +
			convert<int>(rtXs) + convert<int>(rtXs);
		if (bb_sum) {
			if (lbXs.empty())
				bb = "0 ";
			else
				bb = lbXs + fromqstr(lbXunit->currentText()) + ' ';
			if (lbYs.empty())
				bb += "0 ";
			else
				bb += (lbYs + fromqstr(lbYunit->currentText()) + ' ');
			if (rtXs.empty())
				bb += "0 ";
			else
				bb += (rtXs + fromqstr(rtXunit->currentText()) + ' ');
			if (rtYs.empty())
				bb += '0';
			else
				bb += (rtYs + fromqstr(rtYunit->currentText()));
			igp.bb = bb;
		}
	}

	igp.draft = draftCB->isChecked();
	igp.clip = clip->isChecked();

	switch (showCB->currentIndex()) {
		case 0: igp.display = graphics::DefaultDisplay; break;
		case 1: igp.display = graphics::MonochromeDisplay; break;
		case 2: igp.display = graphics::GrayscaleDisplay; break;
		case 3: igp.display = graphics::ColorDisplay; break;
		default:;
	}

	if (!displayGB->isChecked())
		igp.display = graphics::NoDisplay;

	//the graphics section
	if (scaleCB->isChecked() && !Scale->text().isEmpty()) {
		igp.scale = fromqstr(Scale->text());
		igp.width = Length("0pt");
		igp.height = Length("0pt");
		igp.keepAspectRatio = false;
	} else {
		igp.scale = string();
		igp.width = WidthCB->isChecked() ?
			//Note that this works even if Width is "auto", since in
			//that case we get "0pt".
			Length(widgetsToLength(Width, widthUnit)):
			Length("0pt");
		igp.height = HeightCB->isChecked() ?
			Length(widgetsToLength(Height, heightUnit)) :
			Length("0pt");
		igp.keepAspectRatio = aspectratio->isEnabled() &&
			aspectratio->isChecked() &&
			igp.width.value() > 0 && igp.height.value() > 0;
	}

	igp.noUnzip = unzipCB->isChecked();
	igp.lyxscale = displayscale->text().toInt();
	igp.rotateAngle = fromqstr(angle->text());

	double rotAngle = convert<double>(igp.rotateAngle);
	if (abs(rotAngle) > 360.0) {
		rotAngle -= 360.0 * floor(rotAngle / 360.0);
		igp.rotateAngle = convert<string>(rotAngle);
	}

	// save the latex name for the origin. If it is the default
	// then origin_ltx returns ""
	igp.rotateOrigin = origin_ltx[origin->currentIndex()];
	igp.scaleBeforeRotation = rotateOrderCB->isChecked();

	// more latex options
	igp.special = fromqstr(latexoptions->text());
}


void GuiGraphics::getBB()
{
	string const fn = fromqstr(filename->text());
	if (fn.empty())
		return;
	string const bb = readBoundingBox(fn);
	bbChanged = false;
	if (bb.empty())
		return;
	lbX->setText(toqstr(token(bb, ' ', 0)));
	lbY->setText(toqstr(token(bb, ' ', 1)));
	rtX->setText(toqstr(token(bb, ' ', 2)));
	rtY->setText(toqstr(token(bb, ' ', 3)));
	// the default units for the bb values when reading
	// it from the file
	lbXunit->setCurrentIndex(0);
	lbYunit->setCurrentIndex(0);
	rtXunit->setCurrentIndex(0);
	rtYunit->setCurrentIndex(0);
}


bool GuiGraphics::isValid()
{
	return !filename->text().isEmpty();
}


bool GuiGraphics::initialiseParams(string const & data)
{
	InsetGraphics::string2params(data, buffer(), params_);
	return true;
}


void GuiGraphics::clearParams()
{
	params_ = InsetGraphicsParams();
}


void GuiGraphics::dispatchParams()
{
	InsetGraphicsParams tmp_params(params_);
	string const lfun = InsetGraphics::params2string(tmp_params, buffer());
	dispatch(FuncRequest(getLfun(), lfun));
}


QString GuiGraphics::browse(QString const & in_name) const
{
	QString const title = qt_("Select graphics file");

	// Does user clipart directory exist?
	string clipdir = addName(package().user_support().absFilename(), "clipart");
	FileName clip(clipdir);

	// bail out to system clipart directory
	if (!clip.isDirectory())
		clipdir = addName(package().system_support().absFilename(), "clipart");

	return browseRelFile(in_name, bufferFilepath(),
		title, fileFilters(QString()), false, 
		qt_("Clipart|#C#c"), toqstr(clipdir),
		qt_("Documents|#o#O"), toqstr(lyxrc.document_path));
}


string GuiGraphics::readBoundingBox(string const & file)
{
	FileName const abs_file = support::makeAbsPath(file, fromqstr(bufferFilepath()));

	// try to get it from the file, if possible. Zipped files are
	// unzipped in the readBB_from_PSFile-Function
	string const bb = readBB_from_PSFile(abs_file);
	if (!bb.empty())
		return bb;

	// we don't, so ask the Graphics Cache if it has loaded the file
	int width = 0;
	int height = 0;

	graphics::Cache & gc = graphics::Cache::get();
	if (gc.inCache(abs_file)) {
		graphics::Image const * image = gc.item(abs_file)->image();

		if (image) {
			width  = image->width();
			height = image->height();
		}
	}

	return ("0 0 " + convert<string>(width) + ' ' + convert<string>(height));
}


bool GuiGraphics::isFileNameValid(string const & fname) const
{
	// It may be that the filename is relative.
	return support::makeAbsPath(fname, fromqstr(bufferFilepath())).isReadableFile();
}


Dialog * createGuiGraphics(GuiView & lv) { return new GuiGraphics(lv); }


} // namespace frontend
} // namespace lyx

#include "GuiGraphics_moc.cpp"