scifont.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 SCI_GRAPHICS_SCIFONT_H
#define SCI_GRAPHICS_SCIFONT_H

#include "sci/resource/resource.h"
#include "sci/graphics/helpers.h"
#include "sci/util.h"

namespace Sci {

#ifdef ENABLE_SCI32
enum {
    kSci32SystemFont = -1
};
#endif

class GfxFont {
public:
    GfxFont() {}
    virtual ~GfxFont() {}

    virtual GuiResourceId getResourceId() { return 0; }
    virtual byte getHeight() { return 0; }
    virtual bool isDoubleByte(uint16 chr) { return false; }
    virtual byte getCharWidth(uint16 chr) { return 0; }
    virtual byte getCharHeight(uint16 chr) { return 0; }
    virtual void draw(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput) {}
    virtual void drawToBuffer(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput, byte *buffer, int16 width, int16 height) {}
};


class GfxFontFromResource : public GfxFont {
public:
    GfxFontFromResource(ResourceManager *resMan, GfxScreen *screen, GuiResourceId resourceId);
    ~GfxFontFromResource() override;

    GuiResourceId getResourceId() override;
    uint8 getHeight() override;
    uint8 getCharWidth(uint16 chr) override;
    void draw(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput) override;
#ifdef ENABLE_SCI32
    // SCI2/2.1 equivalent
    void drawToBuffer(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput, byte *buffer, int16 width, int16 height) override;
#endif

private:
    uint8 getCharHeight(uint16 chr) override;
    SciSpan<const byte> getCharData(uint16 chr);

    ResourceManager *_resMan;
    GfxScreen *_screen;

    Resource *_resource;
    SciSpan<const byte> _resourceData;
    GuiResourceId _resourceId;

    struct Charinfo {
        uint8 width, height;
        int16 offset;
    };

    uint8 _fontHeight;
    uint16 _numChars;
    Charinfo *_chars;
};

} // End of namespace Sci

#endif // SCI_GRAPHICS_SCIFONT_H