qdesigner_propertycommand.cpp

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#include "qdesigner_propertycommand_p.h"
#include "qdesigner_utils_p.h"
#include "dynamicpropertysheet.h"
#include "qdesigner_propertyeditor_p.h"
#include "qdesigner_integration_p.h"

#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormWindowCursorInterface>
#include <QtDesigner/QDesignerDynamicPropertySheetExtension>
#include <QtDesigner/QDesignerPropertySheetExtension>
#include <QtDesigner/QDesignerPropertyEditorInterface>
#include <QtDesigner/QDesignerObjectInspectorInterface>
#include <QtDesigner/QDesignerIntegrationInterface>
#include <QtDesigner/QDesignerWidgetDataBaseInterface>
#include <QtDesigner/QExtensionManager>

#include <QtCore/QSize>
#include <QtCore/QTextStream>
#include <QtGui/QWidget>
#include <QtGui/QApplication>
#include <QtGui/QAction>
#include <QtGui/QDialog>
#include <QtGui/QPushButton>
#include <qdebug.h>

namespace  {
enum { debugPropertyCommands = 0 };


QSize checkSize(const QSize &size)
{
    return size.boundedTo(QSize(0xFFFFFF, 0xFFFFFF));
}

QSize diffSize(QDesignerFormWindowInterface *fw)
{
    const QWidget *container = fw->core()->integration()->containerWindow(fw);
    if (!container)
        return QSize();

    const QSize diff = container->size() - fw->size(); // decoration offset of container window
    return diff;
}

void checkSizes(QDesignerFormWindowInterface *fw, const QSize &size, QSize *formSize, QSize *containerSize)
{
    const QWidget *container = fw->core()->integration()->containerWindow(fw);
    if (!container)
        return;

    const  QSize diff = diffSize(fw); // decoration offset of container window

    QSize newFormSize = checkSize(size).expandedTo(fw->mainContainer()->minimumSizeHint()); // don't try to resize to smaller size than minimumSizeHint
    QSize newContainerSize = newFormSize + diff;

    newContainerSize = newContainerSize.expandedTo(container->minimumSizeHint());
    newContainerSize = newContainerSize.expandedTo(container->minimumSize());

    newFormSize = newContainerSize - diff;

    newContainerSize = checkSize(newContainerSize);

    if (formSize)
        *formSize = newFormSize;
    if (containerSize)
        *containerSize = newContainerSize;
}

/* SubProperties: When applying a changed property to a multiselection, it sometimes makes
 * sense to apply only parts (subproperties) of the property.
 * For example, if someone changes the x-value of a geometry in the property editor
 * and applies it to a multi-selection, y should not be applied as this would cause all
 * the widgets to overlap.
 * The following routines can be used to find out the changed subproperties of a property,
 * which are represented as a mask, and to apply them while leaving the others intact. */

enum RectSubPropertyMask {  SubPropertyX=1, SubPropertyY = 2, SubPropertyWidth = 4, SubPropertyHeight = 8 };
enum SizePolicySubPropertyMask { SubPropertyHSizePolicy = 1, SubPropertyHStretch = 2, SubPropertyVSizePolicy =4, SubPropertyVStretch = 8 };
enum FontSubPropertyMask { SubPropertyFamily=1, SubPropertyPointSize=2, SubPropertyBold=4,  SubPropertyItalic=8,
                           SubPropertyUnderline=16, SubPropertyStrikeOut=32, SubPropertyKerning=64, SubPropertyStyleStrategy=128};
enum AlignmentSubPropertyMask { SubPropertyHorizontalAlignment=1, SubPropertyVerticalAlignment=2 };

enum CommonSubPropertyMask { SubPropertyAll = 0xFFFFFFFF };

// Set the mask flag in mask if the properties do not match.
#define COMPARE_SUBPROPERTY(object1, object2, getter, mask, maskFlag) if (object1.getter() != object2.getter()) mask |= maskFlag;

// find changed subproperties of a rectangle
unsigned compareSubProperties(const QRect & r1, const QRect & r2)
{
    unsigned rc = 0;
    COMPARE_SUBPROPERTY(r1, r2, x, rc, SubPropertyX)
    COMPARE_SUBPROPERTY(r1, r2, y, rc, SubPropertyY)
    COMPARE_SUBPROPERTY(r1, r2, width, rc, SubPropertyWidth)
    COMPARE_SUBPROPERTY(r1, r2, height, rc, SubPropertyHeight)
    return rc;
}

// find changed subproperties of a QSize
unsigned compareSubProperties(const QSize & r1, const QSize & r2)
{
    unsigned rc = 0;
    COMPARE_SUBPROPERTY(r1, r2, width,  rc, SubPropertyWidth)
    COMPARE_SUBPROPERTY(r1, r2, height, rc, SubPropertyHeight)
    return rc;
}
// find changed subproperties of a QSizePolicy
unsigned compareSubProperties(const QSizePolicy & sp1, const QSizePolicy & sp2)
{
    unsigned rc = 0;
    COMPARE_SUBPROPERTY(sp1, sp2, horizontalPolicy,  rc, SubPropertyHSizePolicy)
    COMPARE_SUBPROPERTY(sp1, sp2, horizontalStretch, rc, SubPropertyHStretch)
    COMPARE_SUBPROPERTY(sp1, sp2, verticalPolicy,    rc, SubPropertyVSizePolicy)
    COMPARE_SUBPROPERTY(sp1, sp2, verticalStretch,   rc, SubPropertyVStretch)
    return rc;
}

// find changed subproperties of a QFont
unsigned compareSubProperties(const QFont & f1, const QFont & f2)
{
    unsigned rc = 0;
    COMPARE_SUBPROPERTY(f1, f2, family,        rc, SubPropertyFamily)
    COMPARE_SUBPROPERTY(f1, f2, pointSize,     rc, SubPropertyPointSize)
    COMPARE_SUBPROPERTY(f1, f2, bold,          rc, SubPropertyBold)
    COMPARE_SUBPROPERTY(f1, f2, italic,        rc, SubPropertyItalic)
    COMPARE_SUBPROPERTY(f1, f2, underline,     rc, SubPropertyUnderline)
    COMPARE_SUBPROPERTY(f1, f2, strikeOut,     rc, SubPropertyStrikeOut)
    COMPARE_SUBPROPERTY(f1, f2, kerning,       rc, SubPropertyKerning)
    COMPARE_SUBPROPERTY(f1, f2, styleStrategy, rc, SubPropertyStyleStrategy)
    return rc;
}

// Compare colors of a role
bool roleColorChanged(const QPalette & p1, const QPalette & p2, QPalette::ColorRole role)
{
    for (int group = QPalette::Active; group < QPalette::NColorGroups;  group++) {
        const QPalette::ColorGroup pgroup = static_cast<QPalette::ColorGroup>(group);
        if (p1.color(pgroup, role) != p2.color(pgroup, role))
            return true;
    }
    return false;
}
// find changed subproperties of a QPalette
unsigned compareSubProperties(const QPalette & p1, const QPalette & p2)
{
    unsigned rc = 0;
    unsigned maskBit = 1u;
    // generate a mask for each role
    const unsigned p1Changed = p1.resolve();
    const unsigned p2Changed = p2.resolve();
    for (int role = QPalette::WindowText;  role < QPalette::NColorRoles; role++, maskBit <<= 1u) {
        const bool p1RoleChanged = p1Changed & maskBit;
        const bool p2RoleChanged = p2Changed & maskBit;
        // Role has been set/reset in editor
        if (p1RoleChanged != p2RoleChanged) {
            rc |= maskBit;
        } else {
            // Was modified in both palettes: Compare values.
            if (p1RoleChanged && p2RoleChanged && roleColorChanged(p1, p2, static_cast<QPalette::ColorRole>(role)))
                rc |= maskBit;
        }
    }
    return rc;
}

// find changed subproperties of a QAlignment which is a flag combination of vertical and horizontal

unsigned compareSubProperties(Qt::Alignment a1, Qt::Alignment a2)
{
    unsigned rc = 0;
    if ((a1 & Qt::AlignHorizontal_Mask) != (a2 & Qt::AlignHorizontal_Mask))
        rc |= SubPropertyHorizontalAlignment;
    if ((a1 & Qt::AlignVertical_Mask) != (a2 & Qt::AlignVertical_Mask))
        rc |= SubPropertyVerticalAlignment;
    return rc;
}

Qt::Alignment variantToAlignment(const QVariant & q)
{
    return Qt::Alignment(qdesigner_internal::Utils::valueOf(q));
}
// find changed subproperties of a variant
unsigned compareSubProperties(const QVariant & q1, const QVariant & q2, qdesigner_internal::SpecialProperty specialProperty)
{
    switch (q1.type()) {
    case QVariant::Rect:
        return compareSubProperties(q1.toRect(), q2.toRect());
    case QVariant::Size:
        return compareSubProperties(q1.toSize(), q2.toSize());
    case QVariant::SizePolicy:
        return compareSubProperties(qvariant_cast<QSizePolicy>(q1), qvariant_cast<QSizePolicy>(q2));
    case QVariant::Font:
        return compareSubProperties(qvariant_cast<QFont>(q1), qvariant_cast<QFont>(q2));
    case QVariant::Palette:
        return compareSubProperties(qvariant_cast<QPalette>(q1), qvariant_cast<QPalette>(q2));
    default:
        // Enumerations, flags
        switch (specialProperty) {
        case qdesigner_internal::SP_Alignment:
            return compareSubProperties(variantToAlignment(q1), variantToAlignment(q2));
        default:
        break;
        }
        break;
    }
    return SubPropertyAll;
}

// Apply  the sub property if mask flag is set in mask
#define SET_SUBPROPERTY(rc, newValue, getter, setter, mask, maskFlag) if (mask & maskFlag) rc.setter(newValue.getter());

// apply changed subproperties to a rectangle
QRect applyRectSubProperty(const QRect &oldValue, const QRect &newValue, unsigned mask)
{
    QRect rc = oldValue;
    SET_SUBPROPERTY(rc, newValue, x,      moveLeft,  mask, SubPropertyX)
    SET_SUBPROPERTY(rc, newValue, y,      moveTop,   mask, SubPropertyY)
    SET_SUBPROPERTY(rc, newValue, width,  setWidth,  mask, SubPropertyWidth)
    SET_SUBPROPERTY(rc, newValue, height, setHeight, mask, SubPropertyHeight)
    return rc;
}


// apply changed subproperties to a rectangle QSize
QSize applySizeSubProperty(const QSize &oldValue, const QSize &newValue, unsigned mask)
{
    QSize rc = oldValue;
    SET_SUBPROPERTY(rc, newValue, width,  setWidth,  mask, SubPropertyWidth)
    SET_SUBPROPERTY(rc, newValue, height, setHeight, mask, SubPropertyHeight)
    return rc;
}


// apply changed subproperties to a SizePolicy
QSizePolicy applySizePolicySubProperty(const QSizePolicy &oldValue, const QSizePolicy &newValue, unsigned mask)
{
    QSizePolicy rc = oldValue;
    SET_SUBPROPERTY(rc, newValue, horizontalPolicy,  setHorizontalPolicy,  mask, SubPropertyHSizePolicy)
    SET_SUBPROPERTY(rc, newValue, horizontalStretch, setHorizontalStretch, mask, SubPropertyHStretch)
    SET_SUBPROPERTY(rc, newValue, verticalPolicy,    setVerticalPolicy,    mask, SubPropertyVSizePolicy)
    SET_SUBPROPERTY(rc, newValue, verticalStretch,   setVerticalStretch,   mask, SubPropertyVStretch)
    return rc;
}

// apply changed subproperties to a QFont
QFont applyFontSubProperty(const QFont &oldValue, const QFont &newValue, unsigned mask)
{
    QFont  rc = oldValue;
    SET_SUBPROPERTY(rc, newValue, family,        setFamily,        mask, SubPropertyFamily)
    SET_SUBPROPERTY(rc, newValue, pointSize,     setPointSize,     mask, SubPropertyPointSize)
    SET_SUBPROPERTY(rc, newValue, bold,          setBold,          mask, SubPropertyBold)
    SET_SUBPROPERTY(rc, newValue, italic,        setItalic,        mask, SubPropertyItalic)
    SET_SUBPROPERTY(rc, newValue, underline,     setUnderline,     mask, SubPropertyUnderline)
    SET_SUBPROPERTY(rc, newValue, strikeOut,     setStrikeOut,     mask, SubPropertyStrikeOut)
    SET_SUBPROPERTY(rc, newValue, kerning,       setKerning,       mask, SubPropertyKerning)
    SET_SUBPROPERTY(rc, newValue, styleStrategy, setStyleStrategy, mask, SubPropertyStyleStrategy)
    return rc;
}

// apply changed subproperties to a QPalette
QPalette applyPaletteSubProperty(const QPalette &oldValue, const QPalette &newValue, unsigned mask)
{
    QPalette rc = oldValue;
    // apply a mask for each role
    unsigned maskBit = 1u;
    for (int role = QPalette::WindowText;  role < QPalette::NColorRoles; role++, maskBit <<= 1u) {