Add screen.c and stb_image

source/ui.h

@@ -1,15 +1,60 @@
-#pragma once
+#ifndef UI_H
+#define UI_H
 
-struct rgbColor
-{
-	char rC;
-	char gC;
-	char bC;
-};
+#include <errno.h>
+#include <malloc.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
 
-typedef struct rgbColor Color;
+#include <3ds.h>
+#include <citro3d.h>
 
-Color makeColor(char r, char g, char b);
-s8 drawPixel(u32 x, u32 y, Color c, u8* screen);
-s8 drawLine(u32 x1, u32 y1, u32 x2, u32 y2, Color c, u8* screen);
-s8 drawRect(u32 x1, u32 y1, u32 x2, u32 y2, Color c, u8* screen);
+#define TOP_SCREEN_WIDTH 			400
+#define TOP_SCREEN_HEIGHT 			240
+
+#define BOTTOM_SCREEN_WIDTH 		320
+#define BOTTOM_SCREEN_HEIGHT 		240
+
+#define MAX_TEXTURES 				1024
+
+#define TEXTURE_BOTTOM_SCREEN_BG 	0
+#define TEXTURE_TOP_SCREEN_BG 		1
+#define TEXTURE_ICON 				2
+#define TEXTURE_DRIVE_ICON 			3
+
+#define RGBA8(r, g, b, a) 			((((a)&0xFF)<<24) | (((b)&0xFF)<<16) | (((g)&0xFF)<<8) | (((r)&0xFF)<<0))
+
+#define COLOUR_MAINMENU 			RGBA8(78, 74, 67, 255)
+#define COLOUR_MAINMENU_HIGHLIGHT 	RGBA8(250, 237, 227, 255)
+#define COLOUR_MENU 				RGBA8(0, 0, 0, 255)
+#define COLOUR_SUBJECT 				RGBA8(120, 118, 115, 255)
+#define COLOUR_VALUE 				RGBA8(67, 72, 66, 255)
+#define CLEAR_COLOR 				0x000000FF
+
+void screen_init(void);
+void screen_exit(void);
+void screen_set_base_alpha(u8 alpha);
+u32 screen_allocate_free_texture(void);
+void screen_load_texture_untiled(u32 id, void* data, u32 size, u32 width, u32 height, GPU_TEXCOLOR format, bool linearFilter);
+void screen_load_texture_file(u32 id, const char* path, bool linearFilter);
+void screen_load_texture_tiled(u32 id, void* data, u32 size, u32 width, u32 height, GPU_TEXCOLOR format, bool linearFilter);
+void screen_unload_texture(u32 id);
+void screen_get_texture_size(u32* width, u32* height, u32 id);
+void screen_begin_frame(void);
+void screen_end_frame(void);
+void screen_select(gfxScreen_t screen);
+void screen_draw_texture(u32 id, float x, float y) ;
+void screen_draw_texture_crop(u32 id, float x, float y, float width, float height);
+int screen_get_texture_width(u32 id);
+int screen_get_texture_height(u32 id);
+void screen_get_string_size(float* width, float* height, const char* text, float scaleX, float scaleY);
+void screen_get_string_size_wrap(float* width, float* height, const char* text, float scaleX, float scaleY, float wrapWidth);
+float screen_get_string_width(const char * text, float scaleX, float scaleY);
+float screen_get_string_height(const char * text, float scaleX, float scaleY);
+void screen_draw_string(float x, float y, float scaleX, float scaleY, u32 color, const char * text);
+void screen_draw_stringf(float x, float y, float scaleX, float scaleY, u32 color, const char * text, ...);
+void screen_draw_string_wrap(float x, float y, float scaleX, float scaleY, u32 color, float wrapX, const char * text);
+void screen_draw_rect(float x, float y, float width, float height, u32 color);
+
+#endif