mirror of
https://github.com/JorjBauer/aiie.git
synced 2024-11-22 15:31:41 +00:00
293 lines
8.7 KiB
C++
293 lines
8.7 KiB
C++
#include <ctype.h> // isgraph
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#include "sdl-display.h"
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#include "bios-font.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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#define SCREENINSET_X (18*SDLDISPLAY_SCALE)
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#define SCREENINSET_Y (13*SDLDISPLAY_SCALE)
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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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{ 195, 0, 48 }, // magenta
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{ 0, 0, 130 }, // dark blue
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{ 166, 52, 170 }, // purple
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{ 0, 146, 0 }, // dark green
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{ 105, 105, 105 }, // drak grey
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{ 24, 113, 255 }, // medium blue
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{ 12, 190, 235 }, // light blue
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{ 150, 85, 40 }, // brown
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{ 255, 24, 44 }, // orange
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{ 150, 170, 170 }, // light gray
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{ 255, 158, 150 }, // pink
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{ 0, 255, 0 }, // green
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{ 255, 255, 0 }, // yellow
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{ 130, 255, 130 }, // aqua
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{ 255, 255, 255 } // white
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};
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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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SDLDISPLAY_WIDTH, SDLDISPLAY_HEIGHT,
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SDL_WINDOW_SHOWN);
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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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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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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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printf("redraw background\n");
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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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// drawImageOfSizeAt will horizontally scale out the image b/c the
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// images themselves aren't aware of the double resolution. This is an
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// inconsistency that probably should be addressed. FIXME?
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void SDLDisplay::drawImageOfSizeAt(const uint8_t *img,
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uint16_t sizex, uint8_t sizey,
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uint16_t wherex, uint8_t wherey)
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{
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for (uint8_t y=0; y<sizey; y++) {
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for (uint16_t x=0; x<sizex; x++) {
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const uint8_t *p = &img[(y * sizex + x)*3];
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p = &img[(y * sizex + x)*3];
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drawPixel((x+wherex)*SDLDISPLAY_SCALE, y+wherey, p[0], p[1], p[2]);
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drawPixel((x+wherex)*SDLDISPLAY_SCALE+1, y+wherey, p[0], p[1], p[2]);
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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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// Whole-screen blit - unimplemented here
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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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// The dimensions here are the dimensions of the variable screen --
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// not the border. We don't support updating the border *except* by
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// drawing directly to the screen device...
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for (uint16_t y=r.top*SDLDISPLAY_SCALE; y<r.bottom*SDLDISPLAY_SCALE; y++) {
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for (uint16_t x=r.left*SDLDISPLAY_SCALE; x<r.right*SDLDISPLAY_SCALE; x++) {
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uint8_t colorIdx = videoBuffer[y*SDLDISPLAY_WIDTH+x];
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uint8_t r, g, b;
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r = loresPixelColors[colorIdx][0];
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g = loresPixelColors[colorIdx][1];
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b = loresPixelColors[colorIdx][2];
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if (g_displayType == m_monochrome) {
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float fv = 0.2125 * r + 0.7154 * g + 0.0721 * b;
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r = b = 0;
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g = fv;
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}
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else if (g_displayType == m_blackAndWhite) {
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float fv = 0.2125 * r + 0.7154 * g + 0.0721 * b;
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r = g = b = fv;
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}
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SDL_SetRenderDrawColor(renderer, r, g, b, 255);
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SDL_RenderDrawPoint(renderer, x+SCREENINSET_X, y+SCREENINSET_Y);
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}
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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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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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drawPixel(x*SDLDISPLAY_SCALE, y, 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 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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}
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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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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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}
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void SDLDisplay::drawCharacter(uint8_t mode, uint16_t x, uint8_t y, char c)
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{
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int8_t xsize = 8,
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ysize = 0x0C,
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offset = 0x20;
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uint16_t temp;
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c -= offset;// font starts with a space
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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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}
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temp=(c*ysize);
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for (int8_t y_off = 0; y_off <= ysize; y_off++) {
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uint8_t ch = BiosFont[temp];
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for (int8_t x_off = 0; x_off <= xsize; x_off++) {
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if (ch & (1 << (7-x_off))) {
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drawPixel(x + x_off, y + y_off, onPixel);
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} else {
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drawPixel(x + x_off, y + y_off, offPixel);
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}
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}
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temp++;
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}
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}
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void SDLDisplay::drawString(uint8_t mode, uint16_t x, uint8_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; // fixme: any inter-char spacing?
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}
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}
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void SDLDisplay::clrScr()
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{
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 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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// This was called with the expectation that it can draw every one of
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// the 560x192 pixels that could be addressed. The SDLDISPLAY_SCALE is
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// basically half the X scale - so a 320-pixel-wide screen can show 40
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// columns fine, which means that we need to be creative for 80 columns,
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// which need to be alpha-blended...
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void SDLDisplay::cachePixel(uint16_t x, uint16_t y, uint8_t color)
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{
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if (SDLDISPLAY_SCALE == 1) {
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// we need to alpha blend the X because there aren't enough screen pixels.
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// This takes advantage of the fact that we always call this linearly
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// for the 80-column text -- we never (?) do partial screen blits, but
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// always wind up redrawing the entirety. So we can look at the pixel in
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// the "shared" cell of RAM, and come up with a color between the two.
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if (x&1) {
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uint8_t origColor = videoBuffer[(y*SDLDISPLAY_SCALE)*SDLDISPLAY_WIDTH+(x>>1)*SDLDISPLAY_SCALE];
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uint8_t newColor = (uint16_t) (origColor + color) / 2;
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cacheDoubleWidePixel(x>>1,y,newColor);
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// Else if it's black, we leave whatever was in the other pixel.
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} else {
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// The even pixels always draw.
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cacheDoubleWidePixel(x>>1,y,color);
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}
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} else {
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// we have enough resolution to show all the pixels, so just do it
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x = (x * SDLDISPLAY_SCALE)/2;
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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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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)*SDLDISPLAY_WIDTH+x+xoff] = color;
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}
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}
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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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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)*SDLDISPLAY_WIDTH+x*SDLDISPLAY_SCALE+xoff] = color;
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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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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)*SDLDISPLAY_WIDTH+x*SDLDISPLAY_SCALE+2*xoff] = colorA;
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)*SDLDISPLAY_WIDTH+x*SDLDISPLAY_SCALE+1+2*xoff] = colorB;
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}
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}
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}
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