mirror of
https://github.com/JorjBauer/aiie.git
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92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
#include "sdl-printer.h"
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#define WINDOWNAME "printer"
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inline void putpixel(SDL_Renderer *renderer, int x, int y, uint8_t d)
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{
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uint8_t v = (d ? 0xFF : 0x00);
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SDL_SetRenderDrawColor(renderer, v, v, v, 255);
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SDL_RenderDrawPoint(renderer, x, y);
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}
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SDLPrinter::SDLPrinter()
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{
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ypos = 0;
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isDirty = false;
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memset((void *)_hackyBitmap, 0, sizeof(_hackyBitmap));
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window = NULL;
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renderer = NULL;
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}
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SDLPrinter::~SDLPrinter()
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{
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}
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void SDLPrinter::update()
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{
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if (isDirty) {
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isDirty = false; // set early in case there's a race
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if (!window) {
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window = SDL_CreateWindow(WINDOWNAME,
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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WIDTH, HEIGHT,
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SDL_WINDOW_SHOWN);
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renderer = SDL_CreateRenderer(window, -1, 0);
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}
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for (int y=0; y<HEIGHT; y++) {
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for (int x=0; x<WIDTH; x++) {
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if (_hackyBitmap[y*WIDTH+x]) {
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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} else {
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SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
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}
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SDL_RenderDrawPoint(renderer, x, y);
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}
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}
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SDL_RenderPresent(renderer);
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}
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}
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void SDLPrinter::addLine(uint8_t *rowOfBits)
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{
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for (int yoff=0; yoff<9; yoff++) {
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// 960 pixels == 120 bytes -- FIXME
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for (int i=0; i<(NATIVEWIDTH/8); i++) {
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uint8_t bv = rowOfBits[yoff*120+i];
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for (int xoff=0; xoff<8; xoff++) {
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// scale X from "actual FX80" coordinates to "real printer" coordinates
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uint16_t actualX = (uint16_t)(((float)(i*8+xoff) * (float)WIDTH) / (float)NATIVEWIDTH);
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uint8_t pixelColor = (bv & (1 << (7-xoff))) ? 0xFF : 0x00;
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// Make sure to preserve any pixels we've already drawn b/c scaling & overstrike...
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_hackyBitmap[actualX + ((ypos+yoff)%HEIGHT) * WIDTH] |= pixelColor;
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}
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}
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}
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if (ypos >= HEIGHT) {
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ypos = 0;
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}
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isDirty = true;
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}
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void SDLPrinter::moveDownPixels(uint8_t p)
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{
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ypos+= p;
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if (ypos >= HEIGHT) {
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// clear page & restart
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SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
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SDL_RenderClear(renderer);
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isDirty = true;
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ypos = 0;
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}
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}
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