view layer/ImageLayer.h @ 1447:8afea53332f3 single-point

Add option to make pane sizes auto-resize-only (i.e. remove user control via a splitter); also place alignment views above panes instead of below, meaning the extra bit of space that we currently have for the pane without one at least goes to the primary pane

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006-2007 Chris Cannam and QMUL.
    
    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; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef SV_IMAGE_LAYER_H
#define SV_IMAGE_LAYER_H

#include "Layer.h"
#include "data/model/ImageModel.h"

#include <QObject>
#include <QColor>
#include <QImage>
#include <QMutex>

#include <map>

class View;
class QPainter;
class FileSource;

class ImageLayer : public Layer
{
    Q_OBJECT

public:
    ImageLayer();
    virtual ~ImageLayer();

    void paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const override;

    QString getFeatureDescription(LayerGeometryProvider *v, QPoint &) const override;

    bool snapToFeatureFrame(LayerGeometryProvider *v, sv_frame_t &frame,
                                    int &resolution,
                                    SnapType snap) const override;

    void drawStart(LayerGeometryProvider *v, QMouseEvent *) override;
    void drawDrag(LayerGeometryProvider *v, QMouseEvent *) override;
    void drawEnd(LayerGeometryProvider *v, QMouseEvent *) override;

    void editStart(LayerGeometryProvider *v, QMouseEvent *) override;
    void editDrag(LayerGeometryProvider *v, QMouseEvent *) override;
    void editEnd(LayerGeometryProvider *v, QMouseEvent *) override;

    void moveSelection(Selection s, sv_frame_t newStartFrame) override;
    void resizeSelection(Selection s, Selection newSize) override;
    void deleteSelection(Selection s) override;

    void copy(LayerGeometryProvider *v, Selection s, Clipboard &to) override;
    bool paste(LayerGeometryProvider *v, const Clipboard &from, sv_frame_t frameOffset,
                       bool interactive) override;

    bool editOpen(LayerGeometryProvider *, QMouseEvent *) override; // on double-click

    const Model *getModel() const override { return m_model; }
    void setModel(ImageModel *model);

    PropertyList getProperties() const override;
    QString getPropertyLabel(const PropertyName &) const override;
    PropertyType getPropertyType(const PropertyName &) const override;
    int getPropertyRangeAndValue(const PropertyName &,
                                         int *min, int *max, int *deflt) const override;
    QString getPropertyValueLabel(const PropertyName &,
                                          int value) const override;
    void setProperty(const PropertyName &, int value) override;

    ColourSignificance getLayerColourSignificance() const override {
        return ColourAbsent;
    }

    bool isLayerScrollable(const LayerGeometryProvider *v) const override;

    bool isLayerEditable() const override { return true; }

    int getCompletion(LayerGeometryProvider *) const override { return m_model->getCompletion(); }

    bool getValueExtents(double &min, double &max,
                                 bool &logarithmic, QString &unit) const override;

    void toXml(QTextStream &stream, QString indent = "",
                       QString extraAttributes = "") const override;

    int getVerticalScaleWidth(LayerGeometryProvider *, bool, QPainter &) const override { return 0; }

    void setLayerDormant(const LayerGeometryProvider *v, bool dormant) override;

    void setProperties(const QXmlAttributes &attributes) override;

    virtual bool addImage(sv_frame_t frame, QString url); // using a command

protected slots:
    void checkAddSources();
    void fileSourceReady();

protected:
    EventVector getLocalPoints(LayerGeometryProvider *v, int x, int y) const;

    bool getImageOriginalSize(QString name, QSize &size) const;
    QImage getImage(LayerGeometryProvider *v, QString name, QSize maxSize) const;

    void drawImage(LayerGeometryProvider *v, QPainter &paint, const Event &p,
                   int x, int nx) const;

    //!!! how to reap no-longer-used images?

    typedef std::map<QString, QImage> ImageMap;
    typedef std::map<const LayerGeometryProvider *, ImageMap> ViewImageMap;
    typedef std::map<QString, FileSource *> FileSourceMap;

    static ImageMap m_images;
    static QMutex m_imageMapMutex;
    mutable ViewImageMap m_scaled;
    mutable FileSourceMap m_fileSources;

    QString getLocalFilename(QString img) const;
    void checkAddSource(QString img) const;

    ImageModel *m_model;
    bool m_editing;
    QPoint m_editOrigin;
    Event m_originalPoint;
    Event m_editingPoint;
    ChangeEventsCommand *m_editingCommand;

    void finish(ChangeEventsCommand *command) {
        Command *c = command->finish();
        if (c) CommandHistory::getInstance()->addCommand(c, false);
    }
};

#endif