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 DGDS_DIALOG_H
#define DGDS_DIALOG_H

#include "common/stream.h"
#include "common/array.h"
#include "common/error.h"
#include "common/rect.h"
#include "common/serializer.h"

#include "dgds/dgds_rect.h"

namespace Graphics {
class ManagedSurface;
}

namespace Dgds {

class DgdsFont;
class SceneOp;

enum DialogFlags {
    kDlgFlagNone     =         0,
    kDlgFlagFlatBg   =         1,
    kDlgFlagLeftJust =         2,
    kDlgFlagLo4      =         4,
    kDlgFlagLo8      =         8,
    kDlgFlagLo80     =      0x80,
    kDlgFlagHiFinished = 0x10000,
    kDlgFlagHi2      =   0x20000,
    kDlgFlagHi4      =   0x40000,
    kDlgFlagRedrawSelectedActionChanged      =   0x80000,
    kDlgFlagHi10     =  0x100000,
    kDlgFlagHi20     =  0x200000,
    kDlgFlagHi40     =  0x400000,
    kDlgFlagVisible  =  0x800000,
    kDlgFlagOpening  = 0x1000000,
};

enum DialogFrameType {
    kDlgFramePlain = 1,
    kDlgFrameBorder = 2,
    kDlgFrameThought = 3,
    kDlgFrameRounded = 4
};

enum DialogDrawStage {
    kDlgDrawStageForeground = 0,
    kDlgDrawStageBackground = 1,
    kDlgDrawFindSelectionPointXY = 2,
    kDlgDrawFindSelectionTxtOffset = 3,
};

struct DialogAction {
    // The game initializes str offsets to pointers, but let's be a bit nicer.
    uint16 strStart; 
    uint16 strEnd;   
    //byte unk[8]; /* Not initialized in loader */
    Common::Array<SceneOp> sceneOpList;  

    Common::String dump(const Common::String &indent) const;
};

class DialogState {
public:
    DialogState() : _hideTime(0), _lastMouseX(0), _lastMouseY(0), _charWidth(0),
            _charHeight(0), _strMouseLoc(0), _selectedAction(nullptr) {}
    uint _hideTime;
    DgdsRect _loc;
    int _lastMouseX;
    int _lastMouseY;
    uint16 _charWidth;
    uint16 _charHeight;
    int _strMouseLoc;
    struct DialogAction *_selectedAction;

    Common::String dump(const Common::String &indent) const;
    Common::Error syncState(Common::Serializer &s);
};

class Dialog {
public:
    Dialog();
    uint16 _num;
    uint16 _fileNum; // HOC onward
    DgdsRect _rect;
    uint16 _bgColor;
    uint16 _fontColor;
    uint16 _selectionBgCol;
    uint16 _selectonFontCol;
    uint16 _fontSize;
    DialogFlags _flags;
    DialogFrameType _frameType;
    uint16 _time;
    uint16 _nextDialogFileNum; // HOC onward, always set 0 in dragon.
    uint16 _nextDialogDlgNum;
    uint16 _talkDataNum; // Willy onward, always set 0 in dragon and HoC
    uint16 _talkDataHeadNum; // Willy onward, always set 0 in dragon and HoC
    Common::Array<DialogAction> _action;
    Common::String _str;

    Common::SharedPtr<DialogState> _state;

    void draw(Graphics::ManagedSurface *dst, DialogDrawStage stage);
    void setFlag(DialogFlags flg);
    void clearFlag(DialogFlags flg);
    void flipFlag(DialogFlags flg);
    bool hasFlag(DialogFlags flg) const;
    void updateSelectedAction(int delta);
    struct DialogAction *pickAction(bool isClosing, bool isForceClose);
    Common::String dump(const Common::String &indent) const;
    void clear();

    Common::Error syncState(Common::Serializer &s);

private:
    void drawType1(Graphics::ManagedSurface *dst, DialogDrawStage stage);
    void drawType2(Graphics::ManagedSurface *dst, DialogDrawStage stage);
    void drawType3(Graphics::ManagedSurface *dst, DialogDrawStage stage);
    void drawType4(Graphics::ManagedSurface *dst, DialogDrawStage stage);

    void drawType2BackgroundDragon(Graphics::ManagedSurface *dst, const Common::String &title);
    void drawType2BackgroundChina(Graphics::ManagedSurface *dst, const Common::String &title);
    void drawType2BackgroundBeamish(Graphics::ManagedSurface *dst, const Common::String &title);

    void drawFindSelectionXY();
    void drawFindSelectionTxtOffset();
    void drawForeground(Graphics::ManagedSurface *dst, uint16 fontcol, const Common::String &txt);

    const DgdsFont *getDlgTextFont() const;

    static int _lastSelectedDialogItemNum;
    static Dialog *_lastDialogSelectionChangedFor;
};



} // end namespace Dgds

#endif // DGDS_DIALOG_H