source: trunk/src/qt3support/widgets/q3groupbox.cpp@ 616

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#include "q3groupbox.h"

#include "qlayout.h"
#include "qpainter.h"
#include "qbitmap.h"
#include "q3accel.h"
#include "qradiobutton.h"
#include "qdrawutil.h"
#include "qapplication.h"
#include "qstyle.h"
#include "qcheckbox.h"
#include "qaccessible.h"
#include "qstyleoption.h"
#include "qdebug.h"

QT_BEGIN_NAMESPACE

/*!
    \class Q3GroupBox
    \brief The Q3GroupBox widget provides a group box frame with a title.

    \compat

    A group box provides a frame, a title and a keyboard shortcut, and
    displays various other widgets inside itself. The title is on top,
    the keyboard shortcut moves keyboard focus to one of the group
    box's child widgets, and the child widgets are usually laid out
    horizontally (or vertically) inside the frame.

    The simplest way to use it is to create a group box with the
    desired number of columns (or rows) and orientation, and then just
    create widgets with the group box as parent.

    It is also possible to change the orientation() and number of
    columns() after construction, or to ignore all the automatic
    layout support and manage the layout yourself. You can add 'empty'
    spaces to the group box with addSpace().

    Q3GroupBox also lets you set the title() (normally set in the
    constructor) and the title's alignment().

    You can change the spacing used by the group box with
    setInsideMargin() and setInsideSpacing(). To minimize space
    consumption, you can remove the right, left and bottom edges of
    the frame with setFlat().

    \sa QButtonGroup
*/

class QCheckBox;

class Q3GroupBoxPrivate
{
public:
    Q3GroupBoxPrivate(Q3GroupBox *w):
      q(w), vbox(0), grid(0), row(0), col(0), nRows(0), nCols(0), dir(Qt::Horizontal),
        spac(5), marg(11),
        checkbox(0),
        frameStyle(Q3GroupBox::GroupBoxPanel | Q3GroupBox::Sunken),
        lineWidth(1), midLineWidth(0), frameWidth(0),
        leftFrameWidth(0), rightFrameWidth(0),
        topFrameWidth(0), bottomFrameWidth(0) {}

    void updateFrameWidth();
    void updateStyledFrameWidths();

    Q3GroupBox *q;
    QVBoxLayout *vbox;
    QGridLayout *grid;
    int row;
    int col;
    int nRows, nCols;
    Qt::Orientation dir;
    int spac, marg;

    QCheckBox *checkbox;

    int frameStyle;
    int oldFrameStyle;
    short lineWidth, //line width
        midLineWidth; //midline width
    int frameWidth;
    short leftFrameWidth, rightFrameWidth, 
      topFrameWidth, bottomFrameWidth;
};

/*!
  \internal
  Updates the frame widths from the style.
*/
void Q3GroupBoxPrivate::updateStyledFrameWidths()
{
    QStyleOptionFrameV2 opt;
    opt.initFrom(q);
    QRect cr = q->style()->subElementRect(QStyle::SE_FrameContents, &opt, q);
    leftFrameWidth = cr.left() - opt.rect.left();