dialog.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 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 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 GUI_DIALOG_H
#define GUI_DIALOG_H

#include "common/scummsys.h"
#include "common/str.h"
#include "common/keyboard.h"

#include "gui/object.h"
#include "gui/ThemeEngine.h"

namespace Common {
struct Event;
}

namespace GUI {

class EventRecorder;

class Widget;

// Some "common" commands sent to handleCommand()
enum {
    kCloseWithResultCmd  = 'clsr',
    kCloseCmd            = 'clos',
    kOKCmd               = 'ok  '
};

class Dialog : public GuiObject {
    friend class GuiManager;
    friend class EventRecorder;
    friend class Tooltip;
protected:
    Widget  *_mouseWidget;
    Widget  *_focusedWidget;
    Widget  *_dragWidget;
    Widget  *_dragHookWidget;
    Widget  *_tickleWidget;
    bool    _visible;

    ThemeEngine::DialogBackground _backgroundType;

private:
    int     _result;
    bool    _handlingMouseWheel;

public:
    Dialog(int x, int y, int w, int h, bool scale = false);
    Dialog(const Common::String &name);

    virtual int runModal();

    bool    isVisible() const override  { return _visible; }

    void    releaseFocus() override;
    void    setFocusWidget(Widget *widget);
    Widget *getFocusWidget() { return _focusedWidget; }

    bool isDragging() const { return _dragWidget != nullptr; }

    void reflowLayout() override;
    virtual void lostFocus();
    virtual void receivedFocus(int x = -1, int y = -1) { if (x >= 0 && y >= 0) handleMouseMoved(x, y, 0); }

    virtual void open();
    virtual void close();

    Widget *findWidget(uint32 type);

protected:
    void markWidgetsAsDirty();

    Common::Rect getMaxDirtyRect() const;

    virtual void drawDialog(DrawLayer layerToDraw, bool resetClipping = true);
    void drawWidgets();

    virtual void handleTickle(); // Called periodically (in every guiloop() )
    virtual void handleMouseDown(int x, int y, int button, int clickCount);
    virtual void handleMouseUp(int x, int y, int button, int clickCount);
    virtual void handleMouseWheel(int x, int y, int direction) override;
    virtual void handleKeyDown(Common::KeyState state);
    virtual void handleKeyUp(Common::KeyState state);
    virtual void handleMouseMoved(int x, int y, int button);
    virtual void handleMouseLeft(int button) {}
    virtual void handleOtherEvent(const Common::Event &evt);
    void handleCommand(CommandSender *sender, uint32 cmd, uint32 data) override;

    Widget *findWidget(int x, int y); // Find the widget at pos x,y if any
    Widget *findWidget(const char *name);
    void removeWidget(Widget *widget) override;

    void setDefaultFocusedWidget();

    void registerTickleWidget(Widget *widget) override;
    void unregisterTickleWidget(Widget *widget) override;

    void setResult(int result) { _result = result; }
    int getResult() const { return _result; }
};

} // End of namespace GUI

#endif