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/****************************************************************************
Xplanet 0.94 - render an image of a planet into an X window
Copyright (C) 2002 Hari Nair <hari@alumni.caltech.edu>
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.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
****************************************************************************/
#ifndef DISPLAYBASE_H
#define DISPLAYBASE_H
#include <map>
#include <string>
using namespace std;
#include "checkfuncs.h"
#ifdef HAVE_LIBFREETYPE
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
class Marker;
class ProjectionBase;
class DisplayBase
{
public:
static int getType();
virtual ~DisplayBase();
int getHeight();
int getWidth();
// routines which must be defined in derived classes
virtual const char *identifyMe() = 0;
virtual void render(ProjectionBase *image) = 0;
// routines to be optionally overridden by derived classes
virtual void initialize();
virtual void drawMarker(Marker &m);
virtual int getFontAscent();
virtual int getFontDescent();
virtual void getRGB(string color, unsigned char *RGB);
virtual string getTempdir();
virtual int getTextHeight(const string text);
virtual int getTextWidth(const string text);
virtual void setFont(string fontname);
virtual void setFontSize(const int size);
protected:
int window_width, window_height;
int window_area;
unsigned char *png_alpha;
unsigned char *rgb_data;
unsigned char bg[3]; // background color for annotation
unsigned char fg[3]; // foreground color for annotation
void createLabel();
void doAnnotation(ProjectionBase *image);
void loadRGB();
void setAlpha(unsigned char *c);
void setImage(unsigned char *c);
// routines to be optionally overridden by derived classes
virtual int fontExists(string &filename);
virtual void drawCircle(const int x, const int y, const int r);
virtual void drawImage(Marker &m);
virtual void drawLabel(const string body_label, const string date_label,
const string illum_label, const string obs_label,
const string rotate_label, const string sun_label);
virtual void drawOutlinedString(const int x, const int y,
const string text);
virtual void printError(const string error);
virtual void setColor(string color);
virtual void setForeground(unsigned char *color);
virtual void setPixel(const int x, const int y);
virtual void setPixel(const int x, const int y, double opacity);
virtual int getTextHeight();
private:
#ifdef HAVE_LIBFREETYPE
FT_Library library;
FT_Face face;
int fontsize;
#endif
unsigned char current_color[3];
map<string, unsigned int> RGBColors;
void drawText(const int x, const int y, const string text);
};
#endif
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