mirror of https://github.com/JorjBauer/aiie.git
321 lines
8.9 KiB
C++
321 lines
8.9 KiB
C++
#include <ctype.h> // isgraph
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#include "sdl-display.h"
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#include "images.h"
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#include "globals.h"
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#include "applevm.h"
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#include "apple/appleui.h"
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// FIXME should be able to omit this include and rely on the xterns, which
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// would prove it's linking properly
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#include "apple/font.h"
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extern const unsigned char ucase_glyphs[512];
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extern const unsigned char lcase_glyphs[256];
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extern const unsigned char mousetext_glyphs[256];
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extern const unsigned char interface_glyphs[256];
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// ***
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#define SCREENINSET_X (120)
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#define SCREENINSET_Y (10)
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// RGB map of each of the lowres colors
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const uint8_t loresPixelColors[16][3] = { { 0, 0, 0 }, // black
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{ 0xAC, 0x12, 0x4C }, // magenta
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{ 0x00, 0x07, 0x83 }, // dark blue
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{ 0xAA, 0x1A, 0xD1 }, // purple
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{ 0x00, 0x83, 0x2F }, // dark green
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{ 0x9F, 0x97, 0x7E }, // drak grey
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{ 0x00, 0x8A, 0xB5 }, // medium blue
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{ 0x9F, 0x9E, 0xFF }, // light blue
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{ 0x7A, 0x5F, 0x00 }, // brown
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{ 0xFF, 0x72, 0x47 }, // orange
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{ 0x78, 0x68, 0x7F }, // light gray
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{ 0xFF, 0x7A, 0xCF }, // pink
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{ 0x6F, 0xE6, 0x2C }, // green
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{ 0xFF, 0xF6, 0x7B }, // yellow
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{ 0x6C, 0xEE, 0xB2 }, // aqua
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{ 0xFF, 0xFF, 0xFF } // white
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};
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#define color16To32(x) ( (((x) & 0xF800) << 8) | (((x) & 0x07E0) << 5) | (((x) & 0x001F)<<3) )
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#define packColor32(x) ( (x[0] << 16) | (x[1] << 8) | (x[2]) )
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#define unpackRed(x) ( ((x) & 0xFF0000) >> 16 )
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#define unpackGreen(x) ( ((x) & 0xFF00) >> 8 )
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#define unpackBlue(x) ( ((x) & 0xFF) )
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// FIXME this blend could be optimized - and it's a dumb blend that
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// just averages RGB values individually, rather than trying to find a
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// sane blend of 2 pixels. Needs thought.
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#define blendPackedColor(x,y) ( (((unpackRed(x) + unpackRed(y))/2) << 16) + (((unpackGreen(x) + unpackGreen(y))/2) << 8) + ((unpackBlue(x) + unpackBlue(y))/2) )
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#define luminanceFromRGB(r,g,b) ( ((r)*0.2126) + ((g)*0.7152) + ((b)*0.0722) )
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SDLDisplay::SDLDisplay()
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{
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memset(videoBuffer, 0, sizeof(videoBuffer));
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// FIXME: abstract constants
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screen = SDL_CreateWindow("Aiie!",
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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800, 480,
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SDL_WINDOW_SHOWN|SDL_WINDOW_RESIZABLE);
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// SDL_RENDERER_SOFTWARE because, at least on my Mac, this has some
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// serious issues with hardware accelerated drawing (flashing and crashing).
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renderer = SDL_CreateRenderer(screen, -1, SDL_RENDERER_SOFTWARE);
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SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255); // set to white
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SDL_RenderClear(renderer); // clear it to the selected color
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SDL_RenderPresent(renderer); // perform the render
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// ***
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buffer = SDL_CreateTexture(renderer,
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SDL_PIXELFORMAT_RGB888,
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SDL_TEXTUREACCESS_STREAMING,
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800,
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480);
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}
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SDLDisplay::~SDLDisplay()
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{
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SDL_Quit();
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}
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void SDLDisplay::flush()
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{
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blit();
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SDL_RenderPresent(renderer);
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}
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void SDLDisplay::redraw()
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{
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// primarily for the device, where it's in and out of the
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// bios. Draws the background image.
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g_ui->drawStaticUIElement(UIeOverlay);
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if (g_vm && g_ui) {
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// determine whether or not a disk is inserted & redraw each drive
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g_ui->drawOnOffUIElement(UIeDisk1_state, ((AppleVM *)g_vm)->DiskName(0)[0] == '\0');
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g_ui->drawOnOffUIElement(UIeDisk2_state, ((AppleVM *)g_vm)->DiskName(1)[0] == '\0');
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}
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}
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void SDLDisplay::drawImageOfSizeAt(const uint8_t *img,
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uint16_t sizex, uint16_t sizey,
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uint16_t wherex, uint16_t wherey)
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{
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for (uint16_t y=0; y<sizey; y++) {
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const uint8_t *p = &img[(y * sizex)*3];
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for (uint16_t x=0; x<sizex; x++) {
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videoBuffer[(y+wherey)][(x+wherex)] = packColor32(p);
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p += 3;
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}
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}
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}
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void SDLDisplay::blit()
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{
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uint32_t *pixels = NULL;
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int pitch = 0;
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SDL_LockTexture(buffer,
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NULL, // NULL means the *whole texture* here.
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(void **)&pixels,
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&pitch);
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// FIXME what if pitch isn't as expected? Should be width*4
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memcpy(pixels, videoBuffer, sizeof(videoBuffer));
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SDL_UnlockTexture(buffer);
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SDL_RenderCopy(renderer, buffer, NULL, NULL);
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SDL_RenderPresent(renderer);
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}
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// Blit the videoBuffer to the display device, in the rect given
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void SDLDisplay::blit(AiieRect r)
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{
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blit();
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/*
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if (overlayMessage[0]) {
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drawString(M_SELECTDISABLED, 1, 240 - 16 - 12, overlayMessage);
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}
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SDL_RenderPresent(renderer);
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*/
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}
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inline void putpixel(SDL_Renderer *renderer, int x, int y, uint8_t r, uint8_t g, uint8_t b)
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{
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SDL_SetRenderDrawColor(renderer, r, g, b, 255);
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SDL_RenderDrawPoint(renderer, x, y);
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}
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void SDLDisplay::drawUIPixel(uint16_t x, uint16_t y, uint16_t color)
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{
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// ***
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if (x >= 800 || y >= 480) return; // make sure it's onscreen
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videoBuffer[y][x] = color16To32(color);
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}
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void SDLDisplay::drawPixel(uint16_t x, uint16_t y, uint16_t color)
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{
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uint8_t
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r = (color & 0xF800) >> 8,
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g = (color & 0x7E0) >> 3,
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b = (color & 0x1F) << 3;
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// Pixel-doubling vertically and horizontally, based on scale
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// for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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// putpixel(renderer, x+xoff, yoff+y*SDLDISPLAY_SCALE, r, g, b);
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// }
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// }
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for (int yoff=0; yoff<2; yoff++) {
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putpixel(renderer, x, (y*2)+yoff, r, g, b);
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}
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}
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void SDLDisplay::drawPixel(uint16_t x, uint16_t y, uint8_t r, uint8_t g, uint8_t b)
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{
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// Pixel-doubling horizontally and vertically, based on scale
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// ***
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// for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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// for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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// putpixel(renderer, x+xoff, yoff+y*SDLDISPLAY_SCALE, r, g, b);
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// }
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// }
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for (int yoff=0; yoff<2; yoff++) {
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putpixel(renderer, x, (y*2)+yoff, r, g, b);
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}
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}
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void SDLDisplay::drawCharacter(uint8_t mode, uint16_t x, uint16_t y, char c)
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{
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int8_t xsize = 8,
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ysize = 0x07;
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uint16_t offPixel, onPixel;
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switch (mode) {
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case M_NORMAL:
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onPixel = 0xFFFF;
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offPixel = 0x0010;
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break;
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case M_SELECTED:
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onPixel = 0x0000;
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offPixel = 0xFFFF;
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break;
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case M_DISABLED:
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default:
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onPixel = 0x7BEF;
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offPixel = 0x0000;
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break;
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case M_SELECTDISABLED:
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onPixel = 0x7BEF;
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offPixel = 0xFFE0;
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break;
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case M_PLAIN:
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onPixel = 0xFFFF;
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offPixel = 0x0000;
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break;
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}
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// scale up the font
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const unsigned char *ch = asciiToAppleGlyph(c);
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for (int8_t y_off = 0; y_off <= ysize; y_off++) {
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for (int8_t x_off = 0; x_off <= xsize; x_off++) {
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if (*ch & (1 << (x_off))) {
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for (int8_t ys=0; ys<2; ys++) {
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for (int8_t xs=0; xs<2; xs++) {
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drawUIPixel((x + x_off)*2+xs, (y+y_off)*2 + ys, onPixel);
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}
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}
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} else {
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for (int8_t ys=0; ys<2; ys++) {
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for (int8_t xs=0; xs<2; xs++) {
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drawUIPixel((x + x_off)*2+xs, (y+y_off)*2 + ys, offPixel);
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}
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}
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}
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}
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ch++;
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}
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}
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void SDLDisplay::drawString(uint8_t mode, uint16_t x, uint16_t y, const char *str)
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{
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int8_t xsize = 8; // width of a char in this font
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for (int8_t i=0; i<strlen(str); i++) {
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drawCharacter(mode, x, y, str[i]);
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x += xsize;
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}
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}
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void SDLDisplay::clrScr(uint8_t coloridx)
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{
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const uint8_t *rgbptr = &loresPixelColors[0][0];
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if (coloridx <= 16)
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rgbptr = loresPixelColors[coloridx];
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uint32_t packedColor = packColor32(loresPixelColors[coloridx]);
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for (uint16_t y=0; y<480; y++) {
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for (uint16_t x=0; x<800; x++) {
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videoBuffer[y][x] = packedColor;
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}
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}
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}
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void SDLDisplay::cachePixel(uint16_t x, uint16_t y, uint8_t color)
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{
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// ***
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for (int yoff=0; yoff<2; yoff++) {
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videoBuffer[(y*2)+SCREENINSET_Y+yoff][x+SCREENINSET_X] = packColor32(loresPixelColors[color]);
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}
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}
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// "DoubleWide" means "please double the X because I'm in low-res width mode"
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void SDLDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint8_t color)
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{
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// ***
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for (int yoff=0; yoff<2; yoff++) {
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for (int xoff=0; xoff<2; xoff++) {
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videoBuffer[(y*2)+SCREENINSET_Y+yoff][(x*2)+SCREENINSET_X+xoff] = packColor32(loresPixelColors[color]);
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}
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}
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}
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void SDLDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint32_t packedColor)
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{
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// ***
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for (int yoff=0; yoff<2; yoff++) {
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for (int xoff=0; xoff<2; xoff++) {
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videoBuffer[(y*2)+SCREENINSET_Y+yoff][(x*2)+SCREENINSET_X+xoff] = packedColor;
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}
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}
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}
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void SDLDisplay::cache2DoubleWidePixels(uint16_t x, uint16_t y, uint8_t colorB, uint8_t colorA)
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{
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// ***
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for (int yoff=0; yoff<2; yoff++) {
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for (int xoff=0; xoff<2; xoff++) {
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videoBuffer[(y*2)+SCREENINSET_Y+yoff][(x*2)+SCREENINSET_X+xoff] = packColor32(loresPixelColors[colorA]);
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videoBuffer[(y*2)+SCREENINSET_Y+yoff][(x+1)*2+SCREENINSET_X+xoff] = packColor32(loresPixelColors[colorB]);
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}
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}
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}
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void SDLDisplay::windowResized(uint32_t w, uint32_t h)
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{
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// Preserve the aspect ratio
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float aspectRatio = (float)w/(float)h;
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if (aspectRatio != 800.0/480.0) {
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if (aspectRatio > 800.0/480.0) {
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h = ((1.f * 480.0) / 800.0) * w;
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} else {
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w = (800.0/480.0) * h;
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}
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}
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SDL_SetWindowSize(screen, w, h);
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}
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