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Diffstat (limited to 'src/popupmenu.h')
| -rw-r--r-- | src/popupmenu.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/popupmenu.h b/src/popupmenu.h new file mode 100644 index 0000000..fa92f39 --- /dev/null +++ b/src/popupmenu.h @@ -0,0 +1,123 @@ +/*************************************************************************** + * Copyright (C) 2003 by Sébastien Laoût * + * slaout@linux62.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., * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * + ***************************************************************************/ + +#ifndef POPUPMENU_H +#define POPUPMENU_H + +class QPopupMenu; +class QRect; + +/** QPopupMenu/KPopupMenu doesn't provide metod to exec a menu + * at a given rectangle ! + * eg, popup at bottom of a rectangle, and at top if not possible... + * @author Sébastien Laoût + */ +namespace PopupMenu +{ + /** Show the popup menu centered into rect. + */ + void execAtRectCenter(QPopupMenu &menu, const QRect &rect); + + /** Show the popup menu at left-bottom of rect, or at right-bottom + * if not possible (not enought place). + * If it isn't possible to show it at bottom, it will be shown on + * top of rect (top-left if possible, if not it will be top-right). + * If center is true, it will try to horizontaly center the popup with + * rect, so it will try two positions : bottom center and then top center. + */ + void execAtRectBottom(QPopupMenu &menu, const QRect &rect, bool centered = false); + + /** Idem execAtRectBottom but on the right or left sides, + * prior aligned with the top of the rect, and at the bottom + * if not possible. + * If center is true, it will try to vertically center the popup with + * rect, so it will try two positions : right center and then left center. + */ + void execAtRectRight(QPopupMenu &menu, const QRect &rect, bool centered = false); +} + +/** Test window of PopupMenu methods. + * Just include popupmenu.h in a main Qt application and call + * new PopupMenuTest(); + * Click the window for more explications. + * Resize it to test particular cases. + * (Comment the class, if it isn't done yet to do not compile it :-) ). + * @author Sébastien Laoût + */ + +/***** + +#include <qwidget.h> +#include <qpopupmenu.h> +#include <qpainter.h> +#include <qpen.h> + +c l a s s P o p u p M e n u T e s t : p u b l i c Q W i d g e t +{ + Q _ O B J E C T + p u b l i c: + PopupMenuTest() + : QWidget(0) + { + setCaption("Click to test!"); + show(); + } + + void mousePressEvent(QMouseEvent *event) + { + QPopupMenu menu; + QRect rect( mapToGlobal(QPoint(0,0)), size() ); + + menu.insertItem("A test of popup menu!"); + menu.insertItem("This menu contain some items"); + menu.insertItem("Resize the window as you want and:"); + menu.insertItem("- click : execAtRectCenter"); + menu.insertItem("- right click : execAtRectBottom"); + menu.insertItem("- middle click : execAtRectRight"); + menu.insertItem("- Shift + right click : execAtRectBottom centered"); + menu.insertItem("- Shift + middle click : execAtRectRight centered"); + + if (event->button() & Qt::LeftButton) + PopupMenu::execAtRectCenter(menu, rect); + else if ((event->button() & Qt::RightButton) && (event->state() & Qt::ShiftButton)) + PopupMenu::execAtRectBottom(menu, rect, true); + else if (event->button() & Qt::RightButton) + PopupMenu::execAtRectBottom(menu, rect); + else if ((event->button() & Qt::MidButton) && (event->state() & Qt::ShiftButton)) + PopupMenu::execAtRectRight(menu, rect, true); + else if (event->button() & Qt::MidButton) + PopupMenu::execAtRectRight(menu, rect); + } + + void paintEvent(QPaintEvent*) + { + QPainter paint(this); + paint.setPen(paletteBackgroundColor()); + paint.drawRect(rect()); + paint.drawWinFocusRect(rect()); + paint.setPen( QPen(Qt::black, 1) ); + paint.drawLine( rect().topLeft(), rect().bottomRight() ); + paint.drawLine( rect().topRight(), rect().bottomLeft() ); + } +}; + +*****/ + +#endif // POPUPMENU_H |