/* -*- C++ -*-
 *
 *  This file is part of RawTherapee.
 *
 *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
 *
 *  RawTherapee 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  RawTherapee 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 for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
 */
#pragma once

#include "cropguilistener.h"
#include "cropwindow.h"
#include "edit.h"
#include "editenums.h"
#include "imageareapanel.h"
#include "imageareatoollistener.h"
#include "indclippedpanel.h"
#include "previewhandler.h"
#include "previewmodepanel.h"
#include "toolbar.h"
#include "zoompanel.h"
#include <gtkmm.h>

class ToolShortcutManager;

class ImageAreaPanel;
class ImageArea: public Gtk::DrawingArea,
                 public CropWindowListener,
                 public EditDataProvider,
                 public LockablePickerToolListener {

    friend class ZoomPanel;

protected:
    Glib::ustring infotext;
    Glib::RefPtr<Pango::Layout> deglayout;
    BackBuffer iBackBuffer;
    bool showClippedH, showClippedS;

    ImageAreaPanel *parent;

    std::list<CropWindow *> cropWins;
    PreviewHandler *previewHandler;
    std::shared_ptr<rtengine::StagedImageProcessor> ipc;

    bool dirty;
    CropWindow *focusGrabber;
    CropGUIListener *cropgl;
    PointerMotionListener *pmlistener;
    PointerMotionListener *pmhlistener;
    ImageAreaToolListener *listener;

    ToolShortcutManager *shortcut_mgr_;

    CropWindow *getCropWindow(int x, int y);
    Gtk::SizeRequestMode get_request_mode_vfunc() const override;
    void get_preferred_height_vfunc(int &minimum_height,
                                    int &natural_height) const override;
    void get_preferred_width_vfunc(int &minimum_width,
                                   int &natural_width) const override;
    void
    get_preferred_height_for_width_vfunc(int width, int &minimum_height,
                                         int &natural_height) const override;
    void
    get_preferred_width_for_height_vfunc(int height, int &minimum_width,
                                         int &natural_width) const override;

    int fullImageWidth, fullImageHeight;
    AreaDrawListenerProvider *alp_;

public:
    CropWindow *mainCropWindow;
    CropWindow *flawnOverWindow;
    ZoomPanel *zoomPanel;
    IndicateClippedPanel *indClippedPanel;
    PreviewModePanel *previewModePanel;
    ImageArea
        *iLinkedImageArea; // used to set a reference to the Before image area,
                           // which is set when before/after view is enabled

    explicit ImageArea(ImageAreaPanel *p);
    ~ImageArea() override;

    std::shared_ptr<rtengine::StagedImageProcessor>
    getImProcCoordinator() const;
    void
    setImProcCoordinator(std::shared_ptr<rtengine::StagedImageProcessor> ipc_);
    void setPreviewModePanel(PreviewModePanel *previewModePanel_)
    {
        previewModePanel = previewModePanel_;
    };
    void setIndicateClippedPanel(IndicateClippedPanel *indClippedPanel_)
    {
        indClippedPanel = indClippedPanel_;
    };

    void getScrollImageSize(int &w, int &h);
    void getScrollPosition(int &x, int &y);
    void setScrollPosition(int x, int y); // called by the imageareapanel when
                                          // the scrollbars have been changed

    // enabling and setting text of info area
    void setInfoText(Glib::ustring text);
    void infoEnabled(bool e);

    // widget base events
    void on_realize() override;
    bool on_draw(const ::Cairo::RefPtr<Cairo::Context> &cr) override;
    bool on_motion_notify_event(GdkEventMotion *event) override;
    bool on_button_press_event(GdkEventButton *event) override;
    bool on_button_release_event(GdkEventButton *event) override;
    bool on_scroll_event(GdkEventScroll *event) override;
    bool on_leave_notify_event(GdkEventCrossing *event) override;
    void on_resized(Gtk::Allocation &req);
    void on_style_updated() override;
    void syncBeforeAfterViews();

    void setCropGUIListener(CropGUIListener *l);
    void setPointerMotionListener(PointerMotionListener *pml);
    void setPointerMotionHListener(PointerMotionListener *pml);
    void setImageAreaToolListener(ImageAreaToolListener *l) { listener = l; }
    void setPreviewHandler(PreviewHandler *ph);
    PreviewHandler *getPreviewHandler() { return previewHandler; }

    void grabFocus(CropWindow *cw);
    void unGrabFocus();
    void addCropWindow();
    void cropWindowSelected(CropWindow *cw);
    void cropWindowClosed(CropWindow *cw);
    ToolMode getToolMode();
    bool showColorPickers();
    void setToolHand();
    void straightenReady(double rotDeg);
    void spotWBSelected(int x, int y);
    void sharpMaskSelected(bool sharpMask);
    int getSpotWBRectSize();
    void redraw();

    void zoomFit();
    double getZoom();
    void setZoom(double zoom);

    // EditDataProvider interface
    void subscribe(EditSubscriber *subscriber) override;
    void unsubscribe() override;
    void getImageSize(int &w, int &h) override;

    // CropWindowListener interface
    void cropPositionChanged(CropWindow *cw) override;
    void cropWindowSizeChanged(CropWindow *cw) override;
    void cropZoomChanged(CropWindow *cw) override;
    void initialImageArrived() override;

    // LockablePickerToolListener interface
    void switchPickerVisibility(bool isVisible) override;

    CropWindow *getMainCropWindow() { return mainCropWindow; }

    void setAreaDrawListenerProvider(AreaDrawListenerProvider *ap);

    void setToolShortcutManager(ToolShortcutManager *mgr);

    void setHiDPI(bool yes);    
};
