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/***************************************************************************
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* Copyright (C) 2003 by S<>astien Laot *
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* slaout@linux62.org *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#include "colorpicker.h"
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#include "tqtimer.h"
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#include <kcolordialog.h>
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/// ///
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/** DektopColorPicker */
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/* From TQt documentation:
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* " Note that only visible widgets can grab mouse input.
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* If isVisible() returns FALSE for a widget, that widget cannot call grabMouse(). "
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* So, we should use an always visible widget to be able to pick a color from screen,
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* even by first hidding the main window (user seldomly want to grab a color from BasKet!)
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* or use a global shortcut (main window can be hidden when hitting that shortcut).
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*/
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DesktopColorPicker::DesktopColorPicker()
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: TQDesktopWidget()
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{
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this->setName("DesktopColorPicker");
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m_gettingColorFromScreen = false;
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}
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DesktopColorPicker::~DesktopColorPicker()
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{
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}
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void DesktopColorPicker::pickColor()
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{
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m_gettingColorFromScreen = true;
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// Global::mainContainer->setActive(false);
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TQTimer::singleShot( 50, this, TQ_SLOT(slotDelayedPick()) );
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}
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/* When firered from basket context menu, and not from menu, grabMouse doesn't work!
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* It's perhapse because context menu call slotColorFromScreen() and then
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* ungrab the mouse (since menus grab the mouse).
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* But why isn't there such bug with normal menus?...
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* By calling this method with a TQTimer::singleShot, we are sure context menu code is
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* finished and we can grab the mouse without loosing the grab:
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*/
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void DesktopColorPicker::slotDelayedPick()
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{
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grabKeyboard();
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grabMouse(crossCursor);
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}
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/* Validate the color
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*/
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void DesktopColorPicker::mouseReleaseEvent(TQMouseEvent *event)
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{
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if (m_gettingColorFromScreen) {
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m_gettingColorFromScreen = false;
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releaseMouse();
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releaseKeyboard();
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TQColor color = KColorDialog::grabColor(event->globalPos());
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emit pickedColor(color);
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} else
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TQDesktopWidget::mouseReleaseEvent(event);
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}
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/* Cancel the mode
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*/
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void DesktopColorPicker::keyPressEvent(TQKeyEvent *event)
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{
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if (m_gettingColorFromScreen)
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if (event->key() == TQt::Key_Escape) {
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m_gettingColorFromScreen = false;
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releaseMouse();
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releaseKeyboard();
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emit canceledPick();
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}
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TQDesktopWidget::keyPressEvent(event);
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}
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#include "colorpicker.moc"
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