| 1 | /* $Id: QILineEdit.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
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| 2 | /** @file
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| 3 | *
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| 4 | * VBox frontends: Qt GUI ("VirtualBox"):
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| 5 | * QILineEdit class implementation
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| 6 | */
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| 7 |
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| 8 | /*
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| 9 | * Copyright (C) 2008 Oracle Corporation
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| 10 | *
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| 11 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 12 | * available from http://www.virtualbox.org. This file is free software;
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| 13 | * you can redistribute it and/or modify it under the terms of the GNU
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| 14 | * General Public License (GPL) as published by the Free Software
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| 15 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 16 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 17 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 18 | */
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| 19 |
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| 20 | #include "QILineEdit.h"
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| 21 |
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| 22 | /* Qt includes */
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| 23 | #include <QStyleOptionFrame>
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| 24 |
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| 25 | #if defined (Q_WS_WIN32)
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| 26 | #include <QWindowsVistaStyle>
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| 27 | #include <QLibrary>
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| 28 | #endif
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| 29 |
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| 30 | void QILineEdit::setMinimumWidthByText (const QString &aText)
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| 31 | {
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| 32 | setMinimumWidth (featTextWidth (aText).width());
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| 33 | }
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| 34 |
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| 35 | void QILineEdit::setFixedWidthByText (const QString &aText)
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| 36 | {
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| 37 | setFixedWidth (featTextWidth (aText).width());
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| 38 | }
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| 39 |
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| 40 | QSize QILineEdit::featTextWidth (const QString &aText) const
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| 41 | {
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| 42 | QStyleOptionFrame sof;
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| 43 | sof.initFrom (this);
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| 44 | sof.rect = contentsRect();
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| 45 | sof.lineWidth = hasFrame() ? style()->pixelMetric (QStyle::PM_DefaultFrameWidth) : 0;
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| 46 | sof.midLineWidth = 0;
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| 47 | sof.state |= QStyle::State_Sunken;
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| 48 |
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| 49 | /* The margins are based on qlineedit.cpp of Qt. Maybe they where changed
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| 50 | * at some time in the future. */
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| 51 | QSize sc (fontMetrics().width (aText) + 2*2,
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| 52 | fontMetrics().xHeight() + 2*1);
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| 53 | QSize sa = style()->sizeFromContents (QStyle::CT_LineEdit, &sof, sc, this);
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| 54 |
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| 55 | #if defined (Q_WS_WIN32)
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| 56 | /* Vista l&f style has a bug where the last parameter of sizeFromContents
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| 57 | * function ('widget' what corresponds to 'this' in our class) is ignored.
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| 58 | * Due to it QLineEdit processed as QComboBox and size calculation includes
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| 59 | * non-existing combo-box button of 23 pix in width. So fixing it here: */
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| 60 | if (qobject_cast <QWindowsVistaStyle*> (style()))
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| 61 | {
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| 62 | /* Check if l&f style theme is really active else painting performed by
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| 63 | * Windows Classic theme and there is no such shifting error. */
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| 64 | typedef bool (*IsAppThemedFunction)();
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| 65 | IsAppThemedFunction isAppThemed =
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| 66 | (IsAppThemedFunction) QLibrary::resolve ("uxtheme", "IsAppThemed");
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| 67 | if (isAppThemed && isAppThemed()) sa -= QSize (23, 0);
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| 68 | }
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| 69 | #endif
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| 70 |
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| 71 | return sa;
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| 72 | }
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| 73 |
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