graphics.h

[詳解]

/** @file
    @brief      グラフィックライブラリ

    @date       2007.03.20
    @author     Takashi SHUDO
*/

#ifndef GRAPHICS_H
#define GRAPHICS_H

#include "sysconfig.h"
#include "device.h"

#define MAX_FRAMEBUF    2       ///< 最大フレームバッファ数

#ifdef GSC_GRAPHICS_COLOR_16BIT ///< $gsc グラフィックデバイスは16ビットカラー
typedef unsigned short  PIXEL_DATA;
#endif
#ifdef GSC_GRAPHICS_COLOR_24BIT ///< $gsc グラフィックデバイスは24ビットカラー
typedef unsigned int    PIXEL_DATA;
#endif
#ifdef GSC_GRAPHICS_COLOR_32BIT ///< $gsc グラフィックデバイスは32ビットカラー
typedef unsigned int    PIXEL_DATA;
#endif

// 16bitカラー変換
#define RGB16(r,g,b)    (unsigned int)(((b) >> 3) | (((g) >> 2) << 5) | (((r) >> 3) << 11))

// 24bitカラー変換
#define RGB24(r,g,b)    (unsigned int)((b) | ((g) << 8) | ((r) << 16))
#define RGB24_TO_R(c)   (unsigned char)(((c) >> 16) & 0xff)
#define RGB24_TO_G(c)   (unsigned char)(((c) >>  8) & 0xff)
#define RGB24_TO_B(c)   (unsigned char)(((c) >>  0) & 0xff)

// 32bitカラー変換(ARGB)
#define RGB32(r,g,b)    (unsigned int)(0xff000000 | (b) | ((g) << 8) | ((r) << 16))
#define RGB32_TO_R(c)   (unsigned char)(((c) >> 16) & 0xff)
#define RGB32_TO_G(c)   (unsigned char)(((c) >>  8) & 0xff)
#define RGB32_TO_B(c)   (unsigned char)(((c) >>  0) & 0xff)

// 色変換
#if defined(GSC_GRAPHICS_COLOR_16BIT)
#define RGB RGB16
#elif defined(GSC_GRAPHICS_COLOR_24BIT)
#define RGB RGB24
#define RGB_TO_R        RGB24_TO_R
#define RGB_TO_G        RGB24_TO_G
#define RGB_TO_B        RGB24_TO_B
#elif defined(GSC_GRAPHICS_COLOR_32BIT)
#define RGB RGB32
#define RGB_TO_R        RGB32_TO_R
#define RGB_TO_G        RGB32_TO_G
#define RGB_TO_B        RGB32_TO_B
#endif

// set_draw_mode(mode)
/*
  "fore color" & "back color"
 */
#define GRP_DRAWMODE_NORMAL     0       ///< Draw the foreground with fore color. Draw the background with back color.
#define GRP_DRAWMODE_REVERSE    1       ///< Draw the foreground with back color. Draw the background with fore color.
#define GRP_DRAWMODE_FOREONLY   2       ///< Draw the foreground with back color. No draw the background.

struct st_rect {
        short left;     ///< 左上頂点のX座標
        short top;      ///< 左上頂点のY座標
        short right;    ///< 右下頂点のX座標
        short bottom;   ///< 右下頂点のY座標
};      ///< 矩形

struct st_position {
        short x;        ///< X座標
        short y;        ///< Y座標
};      ///< 位置

struct st_surface {
        short width;    ///< 幅
        short height;   ///< 高さ
};      ///< 面

struct st_box {
        struct st_position pos; ///< 左上頂点の位置
        struct st_surface sur;  ///< 面の大きさ
};      ///< 長(正)方形

struct st_bitmap {
        short width;    ///< 幅
        short height;   ///< 高さ
        unsigned char *data;    ///< ビットマップデータポインタ
};      ///< ビットマップグラフィックデータ

struct st_graphics_context {
        struct st_device *fb_dev;
        short screen_width;
        short screen_height;
        unsigned short color_depth;
        unsigned short frame_num;
        unsigned char *frame_buf_ptr[MAX_FRAMEBUF];
        unsigned int mem_size;
        unsigned int pen_color;
        unsigned int back_color;
        unsigned char pen_mode;
        struct st_rect i_clip_rect;
        struct st_rect clip_rect;
        unsigned char pen_pat[8];
};      ///< [TODO] 複数グラフィックデバイスに対応したい

extern int register_graphics_dev(struct st_device *dev);
extern int init_graphics(char *devname);

extern int get_frame_num(void);
extern int set_display_frame(int fnum);
extern int get_display_frame(void);
extern int set_draw_frame(int fnum);
extern int get_draw_frame(void);
extern void get_screen_info(short *width, short *height);

extern void clear_screen(void);
extern void set_forecolor(unsigned int color);
extern unsigned int get_forecolor(void);
extern void set_backcolor(unsigned int color);
extern unsigned int get_backcolor(void);
extern void set_draw_mode(unsigned char mode);
extern unsigned char get_draw_mode(void);

extern void and_rect(struct st_rect *a, struct st_rect *s1, struct st_rect *s2);
extern short empty_rect(struct st_rect *r);
extern void correct_rect(struct st_rect *rect);
extern void clear_clip_rect(void);
extern void set_clip_rect(struct st_rect *rect);
extern void set_clip_box(struct st_box *box);
extern void get_clip_rect(struct st_rect *rect);

extern void draw_point(short x, short y);
extern void draw_h_line(short x, short y, short width);
extern void draw_v_line(short x, short y, short height);
extern void draw_line(short x, short y, short xe, short ye);
extern void draw_rect(struct st_rect *rect);
extern void draw_fill_rect(struct st_rect *rect);
extern void draw_bitdata(short px, short py, short width, short height, unsigned char *data, short dw);

extern void draw_enlarged_bitdata(short px, short py, short width, short height, unsigned char *data, short dw, int rate);
extern void draw_bitmap(short px, short py, struct st_bitmap *bitmap);
extern void draw_enlarged_bitmap(short px, short py, struct st_bitmap *bitmap, int rate);

extern void draw_circle(short x0, short y0, short r);
extern void draw_fill_circle(short x0, short y0, short r);
extern void draw_ellipse(short xc, short yc, short rx, short ry);
extern void draw_fill_ellipse(short xc, short yc, short rx, short ry);
#if 0
extern void scroll_screen(short x, short y);
#endif

extern void draw_box(struct st_box *box);
extern void draw_round_box(struct st_box *box, short r);
extern void draw_fill_box(struct st_box *box);
extern void draw_round_fill_box(struct st_box *box, short r);
extern void draw_vertex4_region(short x0, short y0, short x1, short y1, short x2, short y2, short x3, short y3);

extern void draw_round_rect(struct st_rect *rect, short r);
extern void draw_round_fill_rect(struct st_rect *rect, short r);
extern void draw_quarter_circle(short x0, short y0, short r, char q);
extern void draw_sector(short x, short y, short er, short ir, char q);

extern int is_point_in_rect(short x, short y, struct st_rect *rect);
extern int is_point_in_box(short x, short y, struct st_box *box);

extern void box2rect(struct st_rect *rect, struct st_box *box);

extern void draw_image(short px, short py, short width, short height, void *image, short dw);

extern void scroll_rect_v(struct st_rect *rect, short pixcel);

extern void resize_image(void *dst_image, short dwidth, short dheight,
                         void *src_image, short swidth, short sheight);

#endif // GRAPHICS_H