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sdrangel/sdrgui/gui/featurelayout.h

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C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2022 Jon Beniston, M7RCE <jon@beniston.com> //
// Copyright (C) 2016 The Qt Company Ltd. //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef SDRGUI_GUI_FEATURELAYOUT_H
#define SDRGUI_GUI_FEATURELAYOUT_H
#include <QLayout>
#include <QRect>
#include <QStyle>
// A QLayout specifically for the Features window, that tries to make the most
// of available space, while allowing the user to resize some elements, on the
// assumption that there are two types of Feature UI
// - Fixed size widgets like Rotator Controller
// - Expanding widgets like Map
// The Feature window is split in to two parts (when horizontal orientation):
// - Left hand side for fixed widgets which are stacked in vertical columns
// to fit available height
// - Right hand side is for expanding widgets inside a Splitter which allows
// a user to manually set how much space is used for each Feature
// When vertical orientation, the fixed widgets are in columns at the top, with
// the expanding widgets underneath (this isn't quite as nice, as the widget
// heights vary more than the widths)
class FeatureLayout : public QLayout
{
public:
explicit FeatureLayout(QWidget *parent, int margin = -1, int hSpacing = -1, int vSpacing = -1);
explicit FeatureLayout(int margin = -1, int hSpacing = -1, int vSpacing = -1);
~FeatureLayout();
void addItem(QLayoutItem *item) override;
int horizontalSpacing() const;
int verticalSpacing() const;
Qt::Orientations expandingDirections() const override;
bool hasHeightForWidth() const override;
int heightForWidth(int) const override;
int count() const override;
QLayoutItem *itemAt(int index) const override;
QSize minimumSize() const override;
void setGeometry(const QRect &rect) override;
QSize sizeHint() const override;
QLayoutItem *takeAt(int index) override;
void setOrientation(Qt::Orientation);
private:
QSize doLayoutVertically(const QRect &rect, bool testOnly) const;
QSize doLayoutHorizontally(const QRect &rect, bool testOnly) const;
int smartSpacing(QStyle::PixelMetric pm) const;
QList<QLayoutItem *> itemList;
int m_hSpace;
int m_vSpace;
Qt::Orientation m_orientation;
QRect m_prevGeometry;
};
#endif // SDRGUI_GUI_FEATURELAYOUT_H