99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
#include "draw.h"
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#include <cstdlib>
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#include <cstdio>
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#include <cstring>
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#include <3ds.h>
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#include "font.h"
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Rect GetScreenSize(gfxScreen_t screen)
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{
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return { (screen == GFX_TOP) ? 400 : 320, 240 };
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}
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// This code is not meant to be readable -- Smea
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int DrawCharacter(u8* fb, font_s* font, char c, s16 x, s16 y, u16 w, u16 h)
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{
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Glyph* cd = &font->desc[(int)c];
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if (!cd->data)
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return 0;
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x += cd->xo; y += font->height - cd->yo - cd->h;
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if (x < 0 || x + cd->w >= w || y < -cd->h || y >= h + cd->h)
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return 0;
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u8* charData = cd->data;
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s16 cy = y, ch = cd->h, cyo = 0;
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if (y < 0) {
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cy = 0;
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cyo = -y;
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ch = cd->h-cyo;
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} else if (y + ch > h) {
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ch = h - y;
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}
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fb += (x * h + cy) * 3;
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const u8 r = font->color[0];
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const u8 g = font->color[1];
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const u8 b = font->color[2];
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for (int i = 0; i < cd->w; i++) {
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charData += cyo;
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for (int j = 0; j < ch; j++) {
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u8 v = *(charData++);
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if (v) {
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fb[0] = (fb[0] * (0xFF - v) + (b * v)) >> 8;
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fb[1] = (fb[1] * (0xFF - v) + (g * v)) >> 8;
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fb[2] = (fb[2] * (0xFF - v) + (r * v)) >> 8;
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}
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fb += 3;
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}
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charData += (cd->h - (cyo + ch));
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fb += (h - ch) * 3;
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}
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return cd->xa;
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}
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void DrawString(u8* fb, font_s* f, const std::string& str, s16 x, s16 y, u16 w, u16 h)
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{
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if (!f || !fb)
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return;
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int dx = 0, dy = 0;
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for (const char& c : str)
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{
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dx += DrawCharacter(fb, f, c, x + dx, y + dy, w, h);
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if (c == '\n') {
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dx = 0;
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dy -= f->height;
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}
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}
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}
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void DrawText(gfxScreen_t screen, gfx3dSide_t side, font_s* font, const std::string& str, s16 x, s16 y)
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{
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if (!font)
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font = &fontDefault;
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u16 fbWidth, fbHeight;
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u8* fbAdr = gfxGetFramebuffer(screen, side, &fbWidth, &fbHeight);
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DrawString(fbAdr, font, str, y, x, fbHeight, fbWidth);
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}
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void FillScreen(gfxScreen_t screen, u8 bg_r, u8 bg_g, u8 bg_b)
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{
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Rect screen_size = GetScreenSize(screen);
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u8* fb_addr = gfxGetFramebuffer(screen, GFX_LEFT, nullptr, nullptr);
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for (int i = 0; i < screen_size.w * screen_size.h * 3; i += 3) {
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fb_addr[i] = bg_b;
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fb_addr[i+1] = bg_g;
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fb_addr[i+2] = bg_r;
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}
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}
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