forked from AbleOS/ableos
133 lines
4 KiB
Plaintext
133 lines
4 KiB
Plaintext
.{memory, log, string} := @use("../../../../libraries/stn/src/lib.hb")
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render := @use("../../../../libraries/render/src/lib.hb")
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/* expected result: almost-not-trash notepad app
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very jank
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-----------------
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features:
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- basic keys
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- holding support with DAS
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- visible cursor
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- shift key support
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*/
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psf := @embed("../../../../consolefonts/tamsyn/10x20r.psf")
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handle_char := fn(char: u8, cursor: ^u8, buf: ^u8): ^u8 {
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if char == 0 {
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return cursor
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}
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if char != 0x8 {
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*cursor = char
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return cursor + 1
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} else if char == 0xA {
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*cursor = 32
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cursor += 1;
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*cursor = 92
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return cursor + 1
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} else if cursor > buf {
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cursor -= 1;
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*cursor = 32
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return cursor
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}
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return cursor
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}
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example := fn(): void {
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screen := render.init(true)
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window := render.new_surface(480, 340)
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font := render.text.font_from_psf2(@bitcast(&psf), true)
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msg := "ableboard (tm) (patent pending):\n\0"
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msg_len := string.length(msg)
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buf := memory.alloc(u8, 4096)
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@inline(memory.copy, u8, msg, buf, msg_len)
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cursor := buf + msg_len
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if font == null {
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return
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};
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*cursor = 95
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draw(screen, window, font, buf);
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*cursor = 0
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memory.outb(96, 238)
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memory.outb(96, 238)
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memory.outb(96, 244)
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prev_input := @as(u8, 0xFF)
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current_key := @as(u8, 0)
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holding_timer := @as(u32, 0)
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is_shift_pressed := @as(bool, false)
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initial_delay := @as(u32, 50)
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repeat_delay := @as(u32, 7)
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loop {
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input := memory.inb(96)
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is_release := (input & 0x80) != 0
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key_code := input & 0x7F
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if input != prev_input {
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if is_release {
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if key_code == current_key {
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current_key = 0
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holding_timer = 0
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} else if input == 0xAA | input == 0xB6 {
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is_shift_pressed = false
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}
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} else {
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if input == 0x2A | input == 0x36 {
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is_shift_pressed = true
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} else {
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current_key = input
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holding_timer = 1
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cursor = handle_char(map_keys(current_key, is_shift_pressed), cursor, buf)
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}
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}
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prev_input = input
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}
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if current_key != 0 & holding_timer > 0 {
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holding_timer += 1
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if holding_timer >= initial_delay {
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cursor = handle_char(map_keys(current_key, is_shift_pressed), cursor, buf)
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holding_timer = initial_delay - repeat_delay
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}
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};
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*cursor = 95
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draw(screen, window, font, buf);
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*cursor = 0
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if holding_timer > 0 & current_key != 0 {
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if (memory.inb(96) & 0x80) != 0 {
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current_key = 0
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holding_timer = 0
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}
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}
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}
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return
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}
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draw := fn(screen: render.Surface, window: render.Surface, font: render.text.Font, buf: ^u8): void {
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render.clear(screen, render.black)
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render.clear(window, render.black)
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render.put_rect(window, .(0, 0), .(window.width - 1, window.height - 1), render.white)
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render.put_text(window, font, .(7, 7), render.gray, buf)
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render.put_surface(screen, window, .(100, 100), false)
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render.sync(screen)
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}
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ps2_table := [u8].(0x0, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x8, 0x9, 0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69, 0x6F, 0x70, 0x5B, 0x5D, 0xA, 0x0, 0x61, 0x73, 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B, 0x27, 0x60, 0x0, 0x5C, 0x7A, 0x78, 0x63, 0x76, 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x0, 0x2A, 0x0, 0x20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E, 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x8, 0x9, 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49, 0x4F, 0x50, 0x7B, 0x7D, 0xA, 0x0, 0x41, 0x53, 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A, 0x22, 0x7E, 0x0, 0x7C, 0x5A, 0x58, 0x43, 0x56, 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x0, 0x0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
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map_keys := fn(scancode: u8, shift: bool): u8 {
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if shift {
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return ps2_table[scancode + 0x40]
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}
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return ps2_table[scancode]
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} |