simple_graphics.h

This SPI-mode SD Card controller is a free SOPC Builder component that can be used in any SOPC Build

#ifndef __SIMPLE_GRAPHICS_H__
#define __SIMPLE_GRAPHICS_H__

// JCJB:  Adding inclusion of the graphics driver header
#include "alt_video_display.h"
#include "fonts.h"  // modify this file to add/remove fonts

// use this background colour when you don't want a filled in box behind the alpha blended text
#define CLEAR_BACKGROUND -1

#define TAB_SPACING 2

#define RGB 1 // set to 0 if you need BGR instead

#define DO_FILL 1
#define DO_NOT_FILL 0

#define BLACK_8 0x00

#define FONT_10PT_ROW 11
#define FONT_10PT_COLUMN 8

typedef struct {
  int hbegin;
  int vbegin;
  int hend;
  int f_color;
  int b_color;
  char* string;
  char* font;
  int ms_delay;
  int ticks_at_last_move;
  int text_scroll_index;
  char text_scroll_started;
  int window_width;
  int length_of_string;
  int scroll_points;
  int string_points;
} vid_text_scroll_struct;


typedef struct {
	int   vertex_x[3];
	int   vertex_y[3];
//  int   ax, ay;
//  int   bx, by;
//  int   cx, cy;
  int   spans_needed;
  int   max_span;
  int   top_y;
  int   bottom_y;
  int   col;
  int   fill;
  int   center_z;
  int   *span_array;
} triangle_struct;

/* color conversion macro */
#define vid_color_convert24_16_m( x ) (unsigned short)(((*(x + 2) & 0xF8) >> 3) | ((*(x + 1) & 0xFC) << 3) | ((*(x + 0) & 0xF8) << 8))


extern char* cour10_font;

int vid_merge_colors(int red, int green, int blue);

unsigned short vid_color_convert24_16(char* color24);

int vid_color_convert16_24(unsigned short color16, char* color24);

int vid_copy_line_to_frame_buffer( int x, int y, char* buffer, int num_pixels, int source_color_depth, alt_video_display* display );

int vid_print_string(int horiz_offset, int vert_offset, int color, char *font, alt_video_display* display, char string[]);

int vid_scroll_string(vid_text_scroll_struct* scroll, alt_video_display* display);

vid_text_scroll_struct* vid_scroll_string_init(int hbegin, int vbegin, int hend, int f_color, int b_color, char* font, int ms_delay, char *string);

void vid_scroll_string_quit(vid_text_scroll_struct* scroll);

int vid_move_block(int xbegin, int ybegin, int xend, int yend, int x_distance, int y_distance, int backfill_color, alt_video_display* display);

int vid_print_char (int horiz_offset, int vert_offset, int color, char character, char *font, alt_video_display* display);

void vid_draw_line(int horiz_start, int vert_start, int horiz_end, int vert_end, int width, int color, alt_video_display* display);

void vid_set_pixel(int horiz, int vert, unsigned int color, alt_video_display* display);

short vid_get_pixel(int horiz, int vert, alt_video_display* display);

int vid_draw_circle(int Hcenter, int Vcenter, int radius, int color, char fill, alt_video_display* display);

void vid_round_corner_points( int cx, int cy, int x, int y, 
                              int straight_width, int straight_height, int color, 
                              char fill, alt_video_display* display);
                              
int vid_draw_round_corner_box ( int horiz_start, int vert_start, int horiz_end, int vert_end, 
                                int radius, int color, int fill, alt_video_display* display);


int vid_draw_box (int horiz_start, int vert_start, int horiz_end, int vert_end, int color, int fill, alt_video_display* display);

void vid_paint_block (int Hstart, int Vstart, int Hend, int Vend, int color, alt_video_display* display);

void vid_draw_horiz_line (short Hstart, short Hend, int V, int color, alt_video_display* display);


inline int max3( int a, int b, int c );

inline int min3( int a, int b, int c );

int max_diff3(int a, int b, int c);

inline void vid_put_pixel_in_span_map( int x, int y, int *span_array );

void vid_bres_scan_edges( int x1, int y1, int x2, int y2, int *span_array);

void vid_draw_triangle(triangle_struct* tri, alt_video_display* display);

void vid_draw_horiz_line (short Hstart, short Hend, int V, int color, alt_video_display* display);

void vid_draw_sloped_line( unsigned short horiz_start, 
                           unsigned short vert_start, 
                           unsigned short horiz_end, 
                           unsigned short vert_end, 
                           unsigned short width, 
                           int color, 
                           alt_video_display* display);
                           
void CopyImage16( short * __restrict__ source_buffer, 
                  short * __restrict__ dest_buffer, 
                  short source_width, short source_height,
                  short dest_width, short dest_height );

void CropImage16( short * __restrict__ source_buffer, 
                  short * __restrict__ dest_buffer, 
                  short source_width, short source_height,
                  short crop_left, short crop_right,
                  short crop_top, short crop_bottom,
                  short dest_width, short dest_height );

// alpha blending text function
int vid_print_string_alpha( int horiz_offset,
                            int vert_offset,
                            int color,
                            int background_color,
                            struct abc_font_struct font[],
                            alt_video_display * display,
                            char string[]);

// functions used by vid_print_string_alpha
__inline__ int seperate_color_channels( int color_depth,
                                        unsigned char * color,
                                        unsigned char * red,
                                        unsigned char * green,
                                        unsigned char * blue);

__inline__ int merge_color_channels(int color_depth,
                                    unsigned char red,
                                    unsigned char green,
                                    unsigned char blue,
                                    unsigned char * color);

__inline__ int read_from_frame (int horiz,
                                int vert,
                                unsigned char *red,
                                unsigned char *green,
                                unsigned char *blue,
                                alt_video_display * display);

__inline__ int alpha_blending ( int horiz_offset,
                                int vert_offset,
                                int background_color,
                                unsigned char alpha,
                                unsigned char *red,
                                unsigned char *green,
                                unsigned char *blue,
                                alt_video_display * display);

int vid_print_char_alpha (int horiz_offset,
                          int vert_offset,
                          int color,
                          char character,
                          int background_color,
                          struct abc_font_struct font[],
                          alt_video_display * display);

int vid_string_pixel_length_alpha( struct abc_font_struct font[], char string[] );                              
                          


  //Color Definitions
  #if(RGB == 1)  // Use these colours when in RGB format, otherwise BGR will be used instead
    #define ALICEBLUE_16  0xFFDE
    #define ANTIQUEWHITE_16 0xD75F
    #define AQUA_16 0xFFC0
    #define AQUAMARINE_16 0xD7CF
    #define AZURE_16  0xFFDE
    #define BEIGE_16  0xDF9E
    #define BISQUE_16 0xC71F
    #define BLACK_16  0x0000
    #define BLANCHEDALMOND_16 0xCF5F
    #define BLUE_16 0xF800
    #define BLUEVIOLET_16 0xE151
    #define BROWN_16  0x2954
    #define BURLYWOOD_16  0x85DB
    #define CADETBLUE_16  0xA4CB
    #define CHARTREUSE_16 0x07CF
    #define CHOCOLATE_16  0x1B5A
    #define CORAL_16  0x53DF
    #define CORNFLOWERBLUE_16 0xEC8C
    #define CORNSILK_16 0xDFDF
    #define CRIMSON_16  0x389B
    #define CYAN_16 0xFFC0
    #define DARKBLUE_16 0x8800
    #define DARKCYAN_16 0x8C40
    #define DARKGOLDENROD_16  0xC17
    #define DARKGRAY_16 0xAD55
    #define DARKGREEN_16  0x300
    #define DARKKHAKI_16  0x6D97
    #define DARKMAGENTA_16  0x8811
    #define DARKOLIVEGREEN_16 0x2B4A
    #define DARKORANGE_16 0x045F
    #define DARKORCHID_16 0xC993
    #define DARKRED_16  0x0011
    #define DARKSALMON_16 0x7C9D
    #define DARKSEAGREEN_16 0x8DD1
    #define DARKSLATEBLUE_16  0x89C9
    #define DARKSLATEGRAY_16  0x4A45
    #define DARKTURQUOISE_16  0xD640
    #define DARKVIOLET_16 0xD012
    #define DEEPPINK_16 0x909F
    #define DEEPSKYBLUE_16  0xFDC0
    #define DIMGRAY_16  0x6B4D
    #define DODGERBLUE_16 0xFC83
    #define FELDSPAR_16 0x749A
    #define FIREBRICK_16  0x2116
    #define FLORALWHITE_16  0xF7DF
    #define FORESTGREEN_16  0x2444
    #define FUCHSIA_16  0xF81F
    #define GAINSBORO_16  0xDEDB
    #define GHOSTWHITE_16 0xFFDF
    #define GOLD_16 0x069F
    #define GOLDENROD_16  0x251B
    #define GRAY_16 0x8410
    #define GRAY25_16 0x4208
    #define GRAY50_16 0x7BCF
    #define GRAY75_16 0xC618
    #define GREEN_16  0x0400
    #define GREENYELLOW_16  0x2FD5
    #define HONEYDEW_16 0xF7DE
    #define HOTPINK_16  0xB35F
    #define INDIANRED_16  0x5AD9
    #define INDIGO_16 0x8009
    #define IVORY_16  0xF7DF
    #define KHAKI_16  0x8F1E
    #define LAVENDER_16 0xFF1C
    #define LAVENDERBLUSH_16  0xF79F
    #define LAWNGREEN_16  0x07CF
    #define LEMONCHIFFON_16 0xCFDF
    #define LIGHTBLUE_16  0xE6D5
    #define LIGHTCORAL_16 0x841E
    #define LIGHTCYAN_16  0xFFDC
    #define LIGHTGOLDENRODYELLOW_16 0xD7DF
    #define LIGHTGREEN_16 0x9752
    #define LIGHTGREY_16  0xD69A
    #define LIGHTPINK_16  0xC59F
    #define LIGHTSALMON_16  0x7D1F
    #define LIGHTSEAGREEN_16  0xAD84
    #define LIGHTSKYBLUE_16 0xFE50
    #define LIGHTSLATEBLUE_16 0xFB90
    #define LIGHTSLATEGRAY_16 0x9C4E
    #define LIGHTSTEELBLUE_16 0xDE16
    #define LIGHTYELLOW_16  0xE7DF
    #define LIME_16 0x7C0
    #define LIMEGREEN_16  0x3646
    #define LINEN_16  0xE79F
    #define MAGENTA_16  0xF81F
    #define MAROON_16 0x0010
    #define MEDIUMAQUAMARINE_16 0xAE4C
    #define MEDIUMBLUE_16 0xC800
    #define MEDIUMORCHID_16 0xD297
    #define MEDIUMPURPLE_16 0xDB92
    #define MEDIUMSEAGREEN_16 0x7587
    #define MEDIUMSLATEBLUE_16  0xEB4F
    #define MEDIUMSPRINGGREEN_16  0x9FC0
    #define MEDIUMTURQUOISE_16  0xCE89
    #define MEDIUMVIOLETRED_16  0x8098
    #define MIDNIGHTBLUE_16 0x70C3
    #define MINTCREAM_16  0xFFDE
    #define MISTYROSE_16  0xE71F
    #define MOCCASIN_16 0xB71F
    #define NAVAJOWHITE_16  0xAEDF
    #define NAVY_16 0x8000
    #define OLDLACE_16  0xE79F
    #define OLIVE_16  0x0410
    #define OLIVEDRAB_16  0x244D
    #define ORANGE_16 0x051F
    #define ORANGERED_16  0x021F
    #define ORCHID_16 0xD39B
    #define PALEGOLDENROD_16  0xAF5D
    #define PALEGREEN_16  0x9FD3
    #define PALETURQUOISE_16  0xEF55
    #define PALEVIOLETRED_16  0x939B
    #define PAPAYAWHIP_16 0xD75F
    #define PEACHPUFF_16  0xBEDF
    #define PERU_16 0x3C19
    #define PINK_16 0xCE1F
    #define PLUM_16 0xDD1B
    #define POWDERBLUE_16 0xE716
    #define PURPLE_16 0x8010
    #define RED_16  0x001F
    #define ROSYBROWN_16  0x8C57
    #define ROYALBLUE_16  0x9080
    #define SADDLEBROWN_16  0x1211
    #define SALMON_16 0x741F
    #define SANDYBROWN_16 0x651E
    #define SEAGREEN_16 0x5445
    #define SEASHELL_16 0xEF9F
    #define SIENNA_16 0x2A94
    #define SILVER_16 0xC618
    #define SKYBLUE_16  0xEE50
    #define SLATEBLUE_16  0xCACD
    #define SLATEGRAY_16  0x940E
    #define SNOW_16 0xFFDF
    #define SPRINGGREEN_16  0x7FC0
    #define STEELBLUE_16  0xB408
    #define TAN_16  0x8D9A
    #define TEAL_16 0x8400
    #define THISTLE_16  0xDDDB
    #define TOMATO_16 0x431F
    #define TURQUOISE_16  0xD708
    #define VIOLET_16 0xEC1D
    #define VIOLETRED_16  0x911A
    #define WHEAT_16  0xB6DE
    #define WHITE_16  0xFFDF
    #define WHITESMOKE_16 0xF79E
    #define YELLOW_16 0x07DF
    #define YELLOWGREEN_16  0x3653
  
    #define ALICEBLUE_24    0xF0F8FF   
    #define ANTIQUEWHITE_24   0xFAEBD7   
    #define AQUA_24   0x00FFFF   
    #define AQUAMARINE_24   0x7FFFD4   
    #define AZURE_24    0xF0FFFF   
    #define BEIGE_24    0xF5F5DC   
    #define BISQUE_24   0xFFE4C4   
    #define BLACK_24    0x000000   
    #define BLANCHEDALMOND_24   0xFFEBCD   
    #define BLUE_24   0x0000FF   
    #define BLUEVIOLET_24   0x8A2BE2   
    #define BROWN_24    0xA52A2A   
    #define BURLYWOOD_24    0xDEB887   
    #define CADETBLUE_24    0x5F9EA0   
    #define CHARTREUSE_24   0x7FFF00   
    #define CHOCOLATE_24    0xD2691E   
    #define CORAL_24    0xFF7F50   
    #define CORNFLOWERBLUE_24   0x6495ED   
    #define CORNSILK_24   0xFFF8DC   
    #define CRIMSON_24    0xDC143C   
    #define CYAN_24   0x00FFFF   
    #define DARKBLUE_24   0x00008B   
    #define DARKCYAN_24   0x008B8B   
    #define DARKGOLDENROD_24    0xB8860B   
    #define DARKGRAY_24   0xA9A9A9   
    #define DARKGREY_24   0xA9A9A9   
    #define DARKGREEN_24    0x006400   
    #define DARKKHAKI_24    0xBDB76B   
    #define DARKMAGENTA_24    0x8B008B   
    #define DARKOLIVEGREEN_24   0x556B2F   
    #define DARKORANGE_24   0xFF8C00   
    #define DARKORCHID_24   0x9932CC   
    #define DARKRED_24    0x8B0000   
    #define DARKSALMON_24   0xE9967A   
    #define DARKSEAGREEN_24   0x8FBC8F   
    #define DARKSLATEBLUE_24    0x483D8B   
    #define DARKSLATEGRAY_24    0x2F4F4F   
    #define DARKSLATEGREY_24    0x2F4F4F   
    #define DARKTURQUOISE_24    0x00CED1   
    #define DARKVIOLET_24   0x9400D3   
    #define DEEPPINK_24   0xFF1493   
    #define DEEPSKYBLUE_24    0x00BFFF   
    #define DIMGRAY_24    0x696969   
    #define DIMGREY_24    0x696969   
    #define DODGERBLUE_24   0x1E90FF   
    #define FIREBRICK_24    0xB22222   
    #define FLORALWHITE_24    0xFFFAF0   
    #define FORESTGREEN_24    0x228B22   
    #define FUCHSIA_24  0xFF00FF   
    #define GAINSBORO_24    0xDCDCDC   
    #define GHOSTWHITE_24   0xF8F8FF   
    #define GOLD_24   0xFFD700