source: abuse/trunk/src/imlib/image.h @ 515 Tweet

/*
 *  Abuse - dark 2D side-scrolling platform game
 *  Copyright (c) 1995 Crack dot Com
 *  Copyright (c) 2005-2011 Sam Hocevar <sam@hocevar.net>
 *
 *  This software was released into the Public Domain. As with most public
 *  domain software, no warranty is made or implied by Crack dot Com or
 *  Jonathan Clark.
 */

#ifndef _IMAGE_HPP_
#define _IMAGE_HPP_

#include <stdlib.h>
#include "linked.h"
#include "palette.h"
#include "system.h"
#include "specs.h"
#define MAX_DIRTY 200

extern char const *imerr_messages[];  // correspond to imERRORS
#define imREAD_ERROR            1
#define imINCORRECT_FILETYPE   2
#define imFILE_CORRUPTED       3
#define imFILE_NOT_FOUND       4
#define imMEMORY_ERROR         5
#define imNOT_SUPPORTED        6
#define imWRITE_ERROR          7
#define imMAX_ERROR            7

int16_t current_error();
void clear_errors();
void set_error(int16_t x);
int16_t last_error();
void image_init();
void image_uninit();
extern linked_list image_list;

typedef struct image_color_t
{
    uint16_t r;
    uint16_t g;
    uint16_t b;
} image_color;

class filter;


class dirty_rect : public linked_node
{
public :
  int16_t dx1,dy1,dx2,dy2;
  dirty_rect(int16_t x1, int16_t y1, int16_t x2, int16_t y2)
  { dx1=x1; dy1=y1; dx2=x2; dy2=y2;
    if(x2<x1 || y2<y1)
      printf("add incorrect dirty\n");
  }
  virtual int16_t compare(void *n1, int16_t field)
  { return((dirty_rect *)n1)->dy1>dy1; }
} ;

class image_descriptor
{
private:
    int16_t l, h;
    int16_t clipx1, clipy1, clipx2, clipy2;

public:
    uint8_t keep_dirt,
            static_mem; // if set, don't free memory on exit

    linked_list dirties;
    void *extended_descriptor;

    image_descriptor(vec2i size, int keep_dirties = 1, int static_memory = 0);
    int16_t bound_x1(int16_t x1)  { return x1 < clipx1 ? clipx1 : x1; }
    int16_t bound_y1(int16_t y1)  { return y1 < clipy1 ? clipy1 : y1; }
    int16_t bound_x2(int16_t x2)  { return x2 > clipx2 ? clipx2 : x2; }
    int16_t bound_y2(int16_t y2)  { return y2 > clipy2 ? clipy2 : y2; }
    int16_t x1_clip() { return clipx1; }
    int16_t y1_clip() { return clipy1; }
    int16_t x2_clip() { return clipx2; }
    int16_t y2_clip() { return clipy2; }
    void dirty_area(int16_t x1, int16_t y1, int16_t x2, int16_t y2) { ; }
    void clean_area(int16_t x1, int16_t y1, int16_t x2, int16_t y2) { ; }
    void clear_dirties();
    int16_t get_dirty_area(int16_t &x1, int16_t &y1, int16_t &x2, int16_t &y2)
    {
        return 0;
    }
    void get_clip(int16_t &x1, int16_t &y1, int16_t &x2, int16_t &y2)
    {
        x1 = clipx1; y1 = clipy1; x2 = clipx2; y2 = clipy2;
    }
    void set_clip(int16_t x1, int16_t y1, int16_t x2, int16_t y2)
    {
        if(x2 < x1) x2 = x1;
        if(y2 < y1) y2 = y1;
        if(x1 < 0) clipx1 = 0; else clipx1 = x1;
        if(y1 < 0) clipy1 = 0; else clipy1 = y1;
        if(x2 >= l) clipx2 = l - 1; else clipx2 = x2;
        if(y2 >= h) clipy2 = h - 1; else clipy2 = y2;
    }
    void reduce_dirties();
    void add_dirty(int x1, int y1, int x2, int y2);
    void delete_dirty(int x1, int y1, int x2, int y2);
    void resize(int16_t length, int16_t height)
    {
        l = length; h = height;
        clipx1 = 0; clipy1 = 0; clipx2 = l - 1; clipy2 = h - 1;
    }
};

class image : public linked_node
{
private:
    uint8_t *m_data;
    vec2i m_size;
    bool m_locked;

    void MakePage(vec2i size, uint8_t *page_buffer);
    void DeletePage();

public:
    image_descriptor *m_special;

    image(spec_entry *e, bFILE *fp);
    image(bFILE *fp);
    image(vec2i size, uint8_t *page_buffer = NULL, int create_descriptor = 0);
    ~image();

    void Lock();
    void Unlock();

    uint8_t Pixel(vec2i pos);
    void PutPixel(vec2i pos, uint8_t color);

    inline uint8_t *scan_line(int16_t y)
    {
        return m_data + y * m_size.x;
    }
    inline uint8_t *next_line(int16_t lasty, uint8_t *last_scan)
    {
        return last_scan + m_size.x;
    }
    int32_t total_pixels(uint8_t background=0);
    image *copy(); // makes a copy of an image
    void clear(int16_t color = -1); // -1 is background color
    void to_24bit(palette &pal);

    vec2i Size() const { return m_size; }

    void scroll(int16_t x1, int16_t y1, int16_t x2, int16_t y2,
                int16_t xd, int16_t yd);
    void fill_image(image *screen, int16_t x1, int16_t y1,
                    int16_t x2, int16_t y2, int16_t align = 1);
    void put_image(image *screen, int16_t x, int16_t y, char transparent = 0);
    void put_part(image *screen, int16_t x, int16_t y, int16_t x1, int16_t y1,
                  int16_t x2, int16_t y2, char transparent = 0);
    void put_part_xrev(image *screen, int16_t x, int16_t y,
                       int16_t x1, int16_t y1, int16_t x2, int16_t y2,
                       char transparent = 0);
    void put_part_masked(image *screen, image *mask, int16_t x, int16_t y,
                         int16_t maskx, int16_t masky, int16_t x1, int16_t y1,
                         int16_t x2, int16_t y2);
    image *copy_part_dithered(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
    void bar(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint8_t color);
    void xor_bar(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint8_t color);
    void widget_bar(int16_t x1, int16_t y1, int16_t x2, int16_t y2,
                    uint8_t light, uint8_t med, uint8_t dark);
    void line(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint8_t color);
    void rectangle(int16_t x1, int16_t y1, int16_t x2, int16_t y2,
                   uint8_t color);
    void burn_led(int16_t x, int16_t y, int32_t num, int16_t color,
                  int16_t scale = 1);
    void set_clip(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
    void get_clip(int16_t &x1,int16_t &y1,int16_t &x2,int16_t &y2);
    void in_clip(int16_t x1, int16_t y1, int16_t x2, int16_t y2);

    void dirt_off()
    {
        if(m_special && m_special->keep_dirt) m_special->keep_dirt = 0;
    }
    void dirt_on()
    {
        if(m_special) m_special->keep_dirt = 1;
    }

    void add_dirty(int x1, int y1, int x2, int y2)
    {
        if(m_special) m_special->add_dirty(x1, y1, x2, y2);
    }
    void delete_dirty(int x1, int y1, int x2, int y2)
    {
        if(m_special) m_special->delete_dirty(x1, y1, x2, y2);
    }
    void clear_dirties()
    {
        if(m_special) m_special->clear_dirties();
    }
    void dither(palette *pal); // use a b&w palette!
    void Scale(vec2i size);
    void SetSize(vec2i size, uint8_t *page = NULL);
    void flood_fill(int16_t x, int16_t y, uint8_t color);
    image *create_smooth(int16_t smoothness = 1); // 0 no smoothness
    void unpack_scanline(int16_t line, char bitsperpixel = 1);
    uint8_t brightest_color(palette *pal);
    void flip_x();
    void flip_y();
    void make_color(uint8_t color);
    uint8_t darkest_color(palette *pal, int16_t noblack = 0);
};

class image_controller
{
public:
    image_controller()
    {
        image_init();
    }
    ~image_controller()
    {
        image_uninit();
    }
};

#endif /* _IMAGE_HPP_ */