Add Polar chart support

This commit also heavily refactors things as polar chart needs
separate implementation of various classes that previously
only needed one, such as ChartAxis and ChartLayout.

Task-number: QTRD-1757
Change-Id: I3d3db23920314987ceef3ae92879960b833b7136
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/src/layout/abstractchartlayout_p.h b/src/layout/abstractchartlayout_p.h
new file mode 100644
index 00000000..d28af3d2
--- /dev/null
+++ b/src/layout/abstractchartlayout_p.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtCommercial Chart API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef ABSTRACTCHARTLAYOUT_H
+#define ABSTRACTCHARTLAYOUT_H
+
+#include <QGraphicsLayout>
+#include <QMargins>
+#include "qchartglobal.h"
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+class ChartTitle;
+class ChartAxisElement;
+class ChartPresenter;
+class QLegend;
+class ChartBackground;
+
+class AbstractChartLayout : public QGraphicsLayout
+{
+public:
+    AbstractChartLayout(ChartPresenter *presenter);
+    virtual ~AbstractChartLayout();
+
+    virtual void setMargins(const QMargins &margins);
+    virtual QMargins margins() const;
+    virtual void setGeometry(const QRectF &rect);
+
+protected:
+    virtual QRectF calculateBackgroundGeometry(const QRectF &geometry, ChartBackground *background) const;
+    virtual QRectF calculateBackgroundMinimum(const QRectF &minimum) const;
+    virtual QRectF calculateContentGeometry(const QRectF &geometry) const;
+    virtual QRectF calculateContentMinimum(const QRectF &minimum) const;
+    virtual QRectF calculateTitleGeometry(const QRectF &geometry, ChartTitle *title) const;
+    virtual QRectF calculateTitleMinimum(const QRectF &minimum, ChartTitle *title) const;
+    virtual QRectF calculateLegendGeometry(const QRectF &geometry, QLegend *legend) const;
+    virtual QRectF calculateLegendMinimum(const QRectF &minimum, QLegend *legend) const;
+
+    virtual QRectF calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxisElement *>& axes) const = 0;
+    virtual QRectF calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxisElement *>& axes) const = 0;
+
+    // from QGraphicsLayout
+    QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
+    int count() const { return 0; }
+    QGraphicsLayoutItem *itemAt(int) const { return 0; };
+    void removeAt(int) {};
+
+    ChartPresenter *m_presenter;
+    QMargins m_margins;
+    QRectF m_minChartRect;
+    QRectF m_minAxisRect;
+};
+
+QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif // ABSTRACTCHARTLAYOUT_H