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tdeaddons/kicker-applets/kolourpicker/kolourpicker.cpp

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/* This file is part of KolourPicker
Copyright (c) 2001 Malte Starostik <malte@kde.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; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
$Id$
*/
#include <tqfile.h>
#include <tqtextstream.h>
#include <tqlayout.h>
#include <tqimage.h>
#include <tqclipboard.h>
#include <tqregexp.h>
#include <tqbitmap.h>
#include <tqpainter.h>
#include <tqtooltip.h>
#include <tqcursor.h>
#include <tdeglobal.h>
#include <tdelocale.h>
#include <kiconloader.h>
#include <kinstance.h>
#include <tdeconfig.h>
#include <tdeaboutdata.h>
#include <tdeaboutapplication.h>
#include <tdemessagebox.h>
#include <tdepopupmenu.h>
#include "kolourpicker.h"
#include "kolourpicker.moc"
#include <X11/Xlib.h>
// Applet initialization function
extern "C"
{
KDE_EXPORT KPanelApplet* init(TQWidget *parent, const TQString& configFile)
{
TDEGlobal::locale()->insertCatalogue("kolourpicker");
return new KolourPicker(configFile, KPanelApplet::Normal,
KPanelApplet::About,
parent, "kolourpicker");
}
}
KolourPicker::KolourPicker(const TQString& configFile, Type type,
int actions, TQWidget *parent, const char *name)
: KPanelApplet(configFile, type, actions, parent, name),
m_picking(0)
{
TDEAboutData *about = new TDEAboutData("kolourpicker",
I18N_NOOP("Color Picker"),
"v0.1",
I18N_NOOP("An applet to pick color values from anywhere on the screen"),
TDEAboutData::License_GPL_V2,
"(c) 2001 Malte Starostik");
about->addAuthor("Malte Starostik", I18N_NOOP("Original Author"), "malte@kde.org");
m_instance = new TDEInstance(about);
TDEConfig *conf = config();
conf->setGroup("General");
TQStringList history = conf->readListEntry("History");
for (TQStringList::ConstIterator it = history.begin(); it != history.end(); ++it)
m_history.append(TQColor(*it));
setBackgroundOrigin(AncestorOrigin);
m_colourButton = new SimpleButton(this);
m_colourButton->setPixmap(SmallIcon("colorpicker"));
m_colourButton->setFixedSize(20, 20);
TQToolTip::add(m_colourButton, i18n("Pick a color"));
connect(m_colourButton, TQT_SIGNAL(clicked()), TQT_SLOT(slotPick()));
m_historyButton = new SimpleButton(this);
m_historyButton->setFixedSize(20, 20);
if (m_history.count())
m_historyButton->setPixmap(colorPixmap(m_history.last()));
else
{
m_historyButton->setPixmap(colorPixmap(TQColor()));
m_historyButton->setEnabled(false);
}
TQToolTip::add(m_historyButton, i18n("History"));
connect(m_historyButton, TQT_SIGNAL(clicked()), TQT_SLOT(slotHistory()));
}
KolourPicker::~KolourPicker()
{
TDEGlobal::locale()->removeCatalogue("kolourpicker");
}
int KolourPicker::heightForWidth(int width) const
{
return (width > 40) ? 22 : 44;
}
int KolourPicker::widthForHeight(int height) const
{
return (height > 40) ? 22 : 44;
}
void KolourPicker::about()
{
TDEAboutApplication dlg(m_instance->aboutData());
dlg.exec();
}
void KolourPicker::slotPick()
{
m_picking = true;
grabMouse(crossCursor);
grabKeyboard();
}
void KolourPicker::slotHistory()
{
TDEPopupMenu popup;
popup.insertTitle(SmallIcon("colorize"), i18n("History"));
TQPtrList<TQPopupMenu> subMenus;
subMenus.setAutoDelete(true);
for (TQValueList<TQColor>::ConstIterator it = m_history.fromLast();
it != m_history.end();
--it)
{
TQPopupMenu *sub = copyPopup(*it, false);
subMenus.append(sub);
popup.insertItem(colorPixmap(*it),
TQString("%1, %2, %3").arg((*it).red()).arg((*it).green()).arg((*it).blue()),
sub);
}
popup.insertSeparator();
int clear = popup.insertItem(SmallIcon("history_clear"), i18n("&Clear History"));
int id = popup.exec(TQCursor::pos());
if (id == clear)
{
m_history.clear();
m_historyButton->setEnabled(false);
arrangeButtons();
TDEConfig *conf = config();
conf->setGroup("General");
conf->writeEntry("History", TQStringList());
conf->sync();
}
else if (id != -1)
setClipboard(popup.findItem(id)->text());
}
void KolourPicker::mouseReleaseEvent(TQMouseEvent *e)
{
if (m_picking)
{
m_picking = false;
releaseMouse();
releaseKeyboard();
TQWidget *desktop = TQApplication::desktop();
TQPixmap pm = TQPixmap::grabWindow(desktop->winId(),
e->globalPos().x(), e->globalPos().y(), 1, 1);
TQImage img = pm.convertToImage();
TQColor color(img.pixel(0, 0));
// eventually remove a dupe
TQValueListIterator<TQColor> dupe = m_history.find(color);
if (dupe != m_history.end())
m_history.remove(dupe);
m_history.append(color);
while (m_history.count() >= 10)
m_history.remove(m_history.begin());
m_historyButton->setEnabled(true);
arrangeButtons();
TQStringList history;
for (TQValueList<TQColor>::ConstIterator it = m_history.begin();
it != m_history.end();
++it)
{
history.append((*it).name());
}
TDEConfig *conf = config();
conf->setGroup("General");
conf->writeEntry("History", history);
conf->sync();
m_historyButton->setPixmap(colorPixmap(color));
TQPopupMenu *popup = copyPopup(color, true);
int id = popup->exec(e->globalPos());
if (id != -1)
setClipboard( popup->findItem(id)->text() );
delete popup;
}
else
KPanelApplet::mouseReleaseEvent(e);
}
// set both clipboard and selection
void KolourPicker::setClipboard(const TQString& text)
{
TQClipboard *clip = TQApplication::clipboard();
bool oldMode = clip->selectionModeEnabled();
clip->setSelectionMode(true);
clip->setText(text);
clip->setSelectionMode(false);
clip->setText(text);
clip->setSelectionMode( oldMode );
}
void KolourPicker::keyPressEvent(TQKeyEvent *e)
{
if (m_picking)
{
if (e->key() == Key_Escape)
{
m_picking = false;
releaseMouse();
releaseKeyboard();
}
e->accept();
return;
}
KPanelApplet::keyPressEvent(e);
}
void KolourPicker::resizeEvent(TQResizeEvent *)
{
arrangeButtons();
}
void KolourPicker::arrangeButtons()
{
int h, w, p;
if (orientation() ==TQt::Horizontal)
{
h = height();
if (h > 40)
{
// vertical layout
p = (h - 40)/3;
m_colourButton->setGeometry(2, p, 20, 20);
m_historyButton->setGeometry(2, 2*p+20, 20, 20);
}
else
{
// horizontal layout
p = (h - 20)/2;
m_colourButton->setGeometry(2, p, 20, 20);
m_historyButton->setGeometry(24, p, 20, 20);
}
}
else
{
w = width();
if (w > 40)
{
// horizontal layout
p = (w - 40)/3;
m_colourButton->setGeometry(p, 2, 20, 20);
m_historyButton->setGeometry(2*p+20, 2, 20, 20);
}
else
{
// vertical layout
p = (w - 20)/2;
m_colourButton->setGeometry(p, 2, 20, 20);
m_historyButton->setGeometry(p, 24, 20, 20);
}
}
updateGeometry();
}
TQPopupMenu *KolourPicker::copyPopup(const TQColor &c, bool title) const
{
TDEPopupMenu *popup = new TDEPopupMenu;
if (title)
popup->insertTitle(colorPixmap(c), i18n("Copy Color Value"));
TQString value;
// r, g, b
value.sprintf("%u, %u, %u", c.red(), c.green(), c.blue());
popup->insertItem(SmallIcon("text"), value);
// HTML, lower case hex chars
value.sprintf("#%.2x%.2x%.2x", c.red(), c.green(), c.blue());
popup->insertItem(SmallIcon("text-html"), value);
if (value.find(TQRegExp("[a-f]")) >= 0)
{
// HTML, upper case hex chars
value.sprintf("#%.2X%.2X%.2X", c.red(), c.green(), c.blue());
popup->insertItem(SmallIcon("text-html"), value);
}
// lower case hex chars
value.sprintf( "%.2x%.2x%.2x", c.red(), c.green(), c.blue() );
popup->insertItem( SmallIcon( "text-html" ), value );
if ( value.find( TQRegExp( "[a-f]" ) ) >= 0 )
{
// upper case hex chars
value.sprintf( "%.2X%.2X%.2X", c.red(), c.green(), c.blue() );
popup->insertItem( SmallIcon( "text-html" ), value );
}
// Color name
TQStringList names = colorNames(c.red(), c.green(), c.blue());
for (TQStringList::ConstIterator it = names.begin(); it != names.end(); ++it)
popup->insertItem(SmallIcon("text"), *it);
return popup;
}
#define AAFACTOR 4
TQPixmap KolourPicker::colorPixmap(const TQColor &c) const
{
int x, y, dx, dy, d;
TQImage img(16 * AAFACTOR, 16 * AAFACTOR, 32);
img.setAlphaBuffer(true);
img.fill(0);
for (x = 0; x < img.width(); x++)
for (y = 0; y < img.height(); y++)
{
dx = 1 + x - 15 * AAFACTOR / 2;
dy = 1 + y - 15 * AAFACTOR / 2;
d = dx * dx + dy * dy;
if (d < (36 * AAFACTOR * AAFACTOR))
img.setPixel(x, y, c.pixel());
else if (d < (56.25 * AAFACTOR * AAFACTOR))
img.setPixel(x, y, tqRgba(128, 128, 128, 255));
}
TQBitmap mask(16, 16);
mask.fill(TQt::color0);
TQPainter p(&mask);
p.setPen(TQt::NoPen);
p.setBrush(TQt::color1);
p.drawEllipse(0, 0, 15, 15);
p.end();
TQPixmap pm = TQPixmap(img.smoothScale(16, 16));
pm.setMask(mask);
return pm;
}
const TQStringList &KolourPicker::colorNames(int r, int g, int b) const
{
static TQStringList NullList;
if (m_colorNames.isEmpty())
{
TQFile f("/usr/lib/X11/rgb.txt");
if (!f.open(IO_ReadOnly))
return NullList;
TQTextStream str(&f);
TQString red, green, blue;
while (!str.atEnd())
{
str >> red;
if (red.simplifyWhiteSpace()[0].latin1() == '!')
{
str.readLine();
continue;
}
str >> green >> blue;
const_cast<KolourPicker *>(this)->m_colorNames[(red.toInt() << 16) + (green.toInt() << 8) + blue.toInt()]
.append(str.readLine().simplifyWhiteSpace());
}
}
return m_colorNames[(r << 16) + (g << 8) + b];
}