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Diffstat (limited to 'src/popupmenu.cpp')
| -rw-r--r-- | src/popupmenu.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/src/popupmenu.cpp b/src/popupmenu.cpp new file mode 100644 index 0000000..a73aa65 --- /dev/null +++ b/src/popupmenu.cpp @@ -0,0 +1,151 @@ +/*************************************************************************** + * 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. * + ***************************************************************************/ + +#include <kapplication.h> +#include <qdesktopwidget.h> +#include <qpopupmenu.h> +#include <qrect.h> + +#include "popupmenu.h" + +#if KDE_IS_VERSION( 3, 2, 90 ) // KDE 3.3.x + #define MENU_Y_OFFSET 1 +#else + #define MENU_Y_OFFSET 2 +#endif + +/** NOTE 1 : This implementation forget BIDI support (eg RightToLeft languages + * expect to try to popup the menu first at bottom-right + * and not at bottom-left. + * NOTE 2 : This implementation do not support virtual desktop with more than + * one screen. Pehrapse QPopupMenu solve it by itself but I can't + * try : I have only one screen. + * => Have those methods directly in Qt (or KDE) would be a great benefits ! + */ + +void PopupMenu::execAtRectCenter(QPopupMenu &menu, const QRect &rect) +{ + // Compute point where to popup the menu that should be centered : + QSize menuSize = menu.sizeHint(); + QSize menuHalfSize = menuSize / 2; + QPoint point = rect.center() - QPoint(menuHalfSize.width(), menuHalfSize.height()); + + // Very strange : menu.exec(point) do that clipping (but not when exec() by mouse !!! ) : + // If menu is partially out of the screen, move it : +/* int desktopWidth = kapp->desktop()->width(); + int desktopHeight = kapp->desktop()->height(); + if (point.x() + menuSize.width() > desktopWidth) point.setX(desktopWidth - menuSize.width()); + if (point.y() + menuSize.height() - 2 > desktopHeight) point.setY(desktopHeight - menuSize.height() + 2); + if (point.x() < 0) point.setX(0); + if (point.y() < 0) point.setY(0);*/ + + // And show the menu : + menu.exec( point + QPoint(0, MENU_Y_OFFSET) ); // Stupid offset (Qt bug ?) : we should show the menus 2 pixels more bottom ! +} + +// Needed on debug to draw the passed global rectangle : +//#include <qpainter.h> +//#include <qpen.h> + +void PopupMenu::execAtRectBottom(QPopupMenu &menu, const QRect &rect, bool centered) +{ + QSize menuSize = menu.sizeHint() - QSize(1, 1); // A size is [1..n] => We want two lengths that are [0..(n-1)] + int desktopWidth = kapp->desktop()->width(); // to be compared/added/substracted with QRects/QPoints... + int desktopHeight = kapp->desktop()->height(); + + /** Paint the rect on the screen (desktop). + * For test purpose only (to be sure the passed rectangle is right). + * Comment this (and the qpainter and qpen includes) for a non-debug version. + */ + /*QPainter paint(kapp->desktop(), kapp->desktop(), true); + paint.setPen( QPen(Qt::black, 1) ); + paint.drawRect(rect); + paint.end();*/ + + // rect.bottomLeft() and rect.bottomRight() must be VISIBLE : + // show the menu 1 pixel more BOTTOM (add 1 in Y) : + QPoint point = rect.bottomLeft() + QPoint(0, 1); + if (point.y() + menuSize.height() < desktopHeight) { // First try at bottom + if (centered) + point = QPoint( rect.center().x() - menuSize.width() / 2, point.y() ); + else if (point.x() + menuSize.width() < desktopWidth) // Then, try at bottom-left + /*point is already set*/; + else // Overwise, at bottom-right + point = rect.bottomRight() - QPoint(menuSize.width(), - 1); + // Idem : rect.topLeft() and rect.topRight() must be VISIBLE : + // show the menu 1 pixel more TOP (substract 1 in Y) : + } else { // Overwize, try at top + if (centered) + point = QPoint( rect.center().x() - menuSize.width() / 2, rect.top() - menuSize.height() - 1 ); + else if (point.x() + menuSize.width() < desktopWidth) // Then, try at top-left + point = rect.topLeft() - QPoint(0, menuSize.height() + 1); + else // Overwise, at top-right + point = rect.topRight() - QPoint(menuSize.width(), menuSize.height() + 1); + } + + // No need to clip : it will be done by menu.exec(...) + + // And show the menu : + menu.exec( point + QPoint(0, MENU_Y_OFFSET) ); // Stupid offset (Qt bug ?) : we should show the menus 2 pixels more bottom ! +} + +void PopupMenu::execAtRectRight(QPopupMenu &menu, const QRect &rect, bool centered) +{ + QSize menuSize = menu.sizeHint() - QSize(1, 1); // A size is [1..n] => We want two lengths that are [0..(n-1)] + int desktopWidth = kapp->desktop()->width(); // to be compared/added/substracted with QRects/QPoints... + int desktopHeight = kapp->desktop()->height(); + + /** Paint the rect on the screen (desktop). + * For test purpose only (to be sure the passed rectangle is right). + * Comment this (and the qpainter and qpen includes) for a non-debug version. + */ + /*QPainter paint(kapp->desktop(), kapp->desktop(), true); + paint.setPen( QPen(Qt::black, 1) ); + paint.drawRect(rect); + paint.end();*/ + + // rect.topRight() and rect.topLeft() must be VISIBLE : + // show the menu 1 pixel more RIGHT (add 1 in X) : + QPoint point = rect.topRight() + QPoint(1, 0); + if (point.x() + menuSize.width() < desktopWidth) { // First try at right + if (centered) + point = QPoint( point.x(), rect.center().y() - menuSize.height() / 2 ); + else if (point.y() + menuSize.height() < desktopHeight) // Then, try at top-right + /*point is already set*/; + else // Overwise, at top-left + point = rect.bottomRight() - QPoint(-1, menuSize.height()); + // Idem : rect.topLeft() and rect.bottomLeft() must be VISIBLE : + // show the menu 1 pixel more LEFT (substract 1 in X) : + } else { // Overwize, try at top + if (centered) + point = QPoint( rect.left() - menuSize.width() - 1, rect.center().y() - menuSize.height() / 2 ); + else if (point.y() + menuSize.height() < desktopHeight) // Then, try at top-left + point = rect.topLeft() - QPoint(menuSize.width() + 1, 0); + else // Overwise, at bottom-left + point = rect.bottomLeft() - QPoint(menuSize.width() + 1, menuSize.height()); + } + + // No need to clip : it will be done by menu.exec(...) + + // And show the menu : + menu.exec( point + QPoint(0, MENU_Y_OFFSET) ); // Stupid offset (Qt bug ?) : we should show the menus 2 pixels more bottom ! +} + +// # i n c l u d e " p o p u p m e n u . m o c " // Comment this if you don't compile PopupMenuTest class |