snark13
737c974400
- Split tests/ (libc feature tests) and examples/ (real apps); shared
app.mk in repo root, was examples/example.mk
- libc/io/* split into libc/{conio,env,errno,file,mouse,string,sys,
time,video}/ — clearer module boundaries
- New examples/mdview/: markdown viewer (Phases 1-5 + light nested
lists). Headers (H1-H4), HR, ulist/olist/quote with nesting via
leading spaces, fenced code blocks, inline emphasis (bold/italic/
underscore/code), wrap/unwrap mode with soft wrap (F2), horizontal
pan (← →) with '>' truncation indicator
- libc additions: scroll() in conio (ESTEX SCROLL), strlwr/strupr,
gets() test
- Makefile updates across tests/ for the new shared app.mk path
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
114 lines
3.9 KiB
C
114 lines
3.9 KiB
C
/*
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* gfx_text_demo — bitmap-font text rendering test.
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*
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* Stages (press a key to advance):
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* 1. 320×256×256 mode — text in multiple colors using BIOS default font.
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* 2. 640×256×16 mode — same text with the 16-color palette.
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* Verifies the same font renders correctly in both pixel formats.
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*/
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#include <stdio.h>
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#include <conio.h>
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#include <gfx.h>
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#include <stdint.h>
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static uint8_t pal256[256 * 4];
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static uint8_t pal16[16 * 4];
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static void wait_key(void)
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{
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__asm
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ld c, #0x30
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rst #0x10
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__endasm;
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}
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int main(void)
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{
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/* Grey ramp for 256-color mode. */
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for (int i = 0; i < 256; i++) {
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pal256[i * 4 + 0] = (uint8_t)i;
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pal256[i * 4 + 1] = (uint8_t)i;
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pal256[i * 4 + 2] = (uint8_t)i;
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pal256[i * 4 + 3] = 0;
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}
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/* Simple 16-color palette: 0=black, 1=red, 2=green, ..., 7=white,
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* 8..15 = dimmed variants. */
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static const uint8_t bgr16[16][3] = {
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{0x00,0x00,0x00}, {0x00,0x00,0xFF}, {0x00,0xFF,0x00}, {0xFF,0x00,0x00},
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{0x00,0xFF,0xFF}, {0xFF,0x00,0xFF}, {0xFF,0xFF,0x00}, {0xFF,0xFF,0xFF},
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{0x40,0x40,0x40}, {0x40,0x40,0xFF}, {0x40,0xFF,0x40}, {0xFF,0x40,0x40},
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{0x40,0xFF,0xFF}, {0xFF,0x40,0xFF}, {0xFF,0xFF,0x40}, {0xA0,0xA0,0xA0},
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};
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for (int i = 0; i < 16; i++) {
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pal16[i*4+0] = bgr16[i][0];
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pal16[i*4+1] = bgr16[i][1];
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pal16[i*4+2] = bgr16[i][2];
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pal16[i*4+3] = 0;
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}
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/* --- Stage 1: text in 320×256×256 ----------------------------- */
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uint8_t prev = gfx_init(GFX_MODE_320x256x256, 0);
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gfx_pal_load(0, 0, 0, pal256);
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gfx_clear256(0x20);
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gfx_text256(8, 8, "Hello from Sprinter!", 0xFF, 0x20);
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gfx_text256(8, 24, "320x256x256 mode", 0xC0, 0x20);
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gfx_text256(8, 40, "Bitmap font from BIOS WIN_GET_ZG", 0x80, 0x20);
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/* Color showcase — same string in 8 different greys. */
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for (int i = 0; i < 8; i++) {
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char buf[16] = "Color ramp test";
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gfx_text256(8, 64 + i * 12, buf, (uint8_t)(0x40 + i * 24), 0x20);
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}
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/* Adjacent FG/BG variants. */
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gfx_text256(8, 176, "FG=white BG=red", 0xFF, 0x30);
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gfx_text256(8, 192, "FG=black BG=white", 0x00, 0xFF);
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gfx_text256(8, 208, "Negative space:", 0xFF, 0x20);
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/* Large block to test grid-aligned text. */
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for (int row = 0; row < 3; row++)
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for (int col = 0; col < 8; col++) {
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char ch[2] = { (char)('A' + row * 8 + col), 0 };
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gfx_text256(176 + col * 16, 176 + row * 16, ch, 0xFF, 0x20);
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}
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wait_key();
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/* --- Stage 2: text in 640×256×16 ------------------------------ */
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gfx_done(prev);
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prev = gfx_init(GFX_MODE_640x256x16, 0);
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gfx_pal_load(0, 0, 16, pal16);
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gfx_clear16(0);
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gfx_text16(8, 8, "Hello from Sprinter!", 7, 0);
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gfx_text16(8, 24, "640x256x16 mode (16 colours)", 6, 0);
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gfx_text16(8, 40, "Same font, packed two pixels/byte", 4, 0);
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/* Color demo: each line in a different palette index. */
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for (int i = 1; i < 16; i++) {
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char buf[20];
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/* Simple manual itoa to avoid stdio bloat. */
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buf[0] = 'C'; buf[1] = 'o'; buf[2] = 'l'; buf[3] = 'o'; buf[4] = 'r';
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buf[5] = ' '; buf[6] = (char)('0' + (i / 10));
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buf[7] = (char)('0' + (i % 10));
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buf[8] = 0;
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gfx_text16(8, 64 + (i - 1) * 12, buf, (uint8_t)i, 0);
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}
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/* Show on right side — paragraph in white-on-black, then inverted. */
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gfx_text16(280, 64, "ABCDEFGHIJKLMNOP", 7, 0);
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gfx_text16(280, 76, "QRSTUVWXYZ", 7, 0);
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gfx_text16(280, 92, "abcdefghijklmnop", 7, 0);
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gfx_text16(280, 104, "qrstuvwxyz", 7, 0);
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gfx_text16(280, 120, "0123456789", 7, 0);
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gfx_text16(280, 132, "!@#$%^&*()_+-=", 7, 0);
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gfx_text16(280, 148, "Inverted text", 0, 7);
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gfx_text16(280, 164, "FG=red BG=cyan", 1, 6);
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wait_key();
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gfx_done(prev);
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puts("done");
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return 0;
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}
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