/// Инициализация координат - преобразование из координат графика (sx,sy) в экранные (x,y)
QPointF GraphicWidget::initXY(double sx, double sy)
{
    QRect rect(graphWidget -> rect());
    double dx, dy;

    /// Вычисление смещений вдоль осей
    dx = sx - settings.maxX;
    dy = sy - settings.minY;

    /// Вычисление экранных координат
    double x = rect.right() + (dx * (rect.width() - 1) / settings.spanX());
    double y = rect.bottom() - (dy * (rect.height() - 1) / settings.spanY());

    return QPointF(x, y);
}

    dx = sx - settings.minX;
    dy = sy - settings.minY;

Цитата(Гость @ 24.12.2009, 21:20)

class Ui_GraphicWidget

class Ui_GraphicWidgetClass

Цитата(Гость @ 24.12.2009, 21:20)

/********************************************************************************
** Form generated from reading ui file 'GraphicWidget.ui'
**
** Created: Thu 5. Mar 12:26:58 2009
**      by: Qt User Interface Compiler version 4.3.2
**
** WARNING! All changes made in this file will be lost when recompiling ui file!
********************************************************************************/

#ifndef UI_GRAPHICWIDGET_H
#define UI_GRAPHICWIDGET_H

#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QGridLayout>
#include <QtGui/QWidget>

class Ui_GraphicWidgetClass
{
public:
    QGridLayout *gridLayout;
    QWidget *graphWidget;

    void setupUi(QWidget *GraphicWidgetClass)
    {
    if (GraphicWidgetClass->objectName().isEmpty())
        GraphicWidgetClass->setObjectName(QString::fromUtf8("GraphicWidgetClass"));
    GraphicWidgetClass->resize(600, 400);
    QSizePolicy sizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    sizePolicy.setHorizontalStretch(0);
    sizePolicy.setVerticalStretch(0);
    sizePolicy.setHeightForWidth(GraphicWidgetClass->sizePolicy().hasHeightForWidth());
    GraphicWidgetClass->setSizePolicy(sizePolicy);
    gridLayout = new QGridLayout(GraphicWidgetClass);
    gridLayout->setSpacing(6);
    gridLayout->setMargin(11);
    gridLayout->setObjectName(QString::fromUtf8("gridLayout"));
    gridLayout->setHorizontalSpacing(1);
    gridLayout->setVerticalSpacing(3);
    gridLayout->setContentsMargins(3, 3, 1, 3);
    graphWidget = new QWidget(GraphicWidgetClass);
    graphWidget->setObjectName(QString::fromUtf8("graphWidget"));
    sizePolicy.setHeightForWidth(graphWidget->sizePolicy().hasHeightForWidth());
    graphWidget->setSizePolicy(sizePolicy);

    gridLayout->addWidget(graphWidget, 0, 0, 1, 1);


    retranslateUi(GraphicWidgetClass);

    QMetaObject::connectSlotsByName(GraphicWidgetClass);
    } // setupUi

    void retranslateUi(QWidget *GraphicWidgetClass)
    {
    GraphicWidgetClass->setWindowTitle(QApplication::translate("GraphicWidgetClass", "GraphicWidget", 0, QApplication::UnicodeUTF8));
    Q_UNUSED(GraphicWidgetClass);
    } // retranslateUi

};

namespace Ui {
    class GraphicWidgetClass: public Ui_GraphicWidgetClass {};
} // namespace Ui

#endif // UI_GRAPHICWIDGET_H

Цитата(++Norton++ @ 8.3.2009, 0:46)

Спасибо! Теперь все работает! Только лента не вырисовывается, а так масштабирование проходит нормально

rubber(new QRubberBand(QRubberBand::Rectangle, this))

rubber(new QRubberBand(QRubberBand::Rectangle, parent))