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#define TB_IMPL
#include "external/termbox2.h"
#undef TB_IMPL
#define MAX_INPUT_LEN 255
#define DEBUG
#define CHATTY_IMPL
#include "ui.h"
#undef Assert
#define Assert(expr) \
if (!(expr)) \
{ \
tb_shutdown(); \
raise(SIGTRAP); \
}
void
Right(rect TextR, s32 *TextOffset)
{
if (global.cursor_x == TextR.X + TextR.W - 1)
{
if (global.cursor_y == TextR.Y + TextR.H - 1)
{
*TextOffset += TextR.W;
}
else
{
global.cursor_y++;
}
global.cursor_x = TextR.X;
}
else
{
global.cursor_x++;
}
}
void
Left(rect TextR, s32 *TextOffset)
{
if (global.cursor_x == TextR.X)
{
if (global.cursor_y == TextR.Y)
{
*TextOffset -= TextR.W;
}
else
{
global.cursor_y--;
}
global.cursor_x = TextR.X + TextR.W - 1;
}
else
{
global.cursor_x--;
}
}
void
PrintString(s32 X, s32 Y, s32 FG, s32 BG, wchar_t *Text, s32 TextLen)
{
for (s32 At = 0;
At < TextLen;
At++)
{
#ifdef DEBUG
tb_set_cell(X + At, Y, Text[At], TB_BLACK, TB_CYAN);
tb_present();
#else
tb_set_cell(X + At, Y, Text[At], FG, BG);
#endif
}
}
int
main(int Argc, char* Argv[])
{
wchar_t Text[MAX_INPUT_LEN] = {0};
s32 TextLen = 0;
s32 TextPos = 0;
s32 TextOffset = 0;
rect BoxR = {0, 0, 24, 4};
rect TextR = TEXTBOXFROMBOX(BoxR);
struct tb_event ev = {0};
Assert(setlocale(LC_ALL, ""));
tb_init();
bytebuf_puts(&global.out, global.caps[TB_CAP_SHOW_CURSOR]);
global.cursor_x = TextR.X;
global.cursor_y = TextR.Y;
#if 0
{
wchar_t DummyText[] = L"This is some dummy text m"
"eant to be wrapped sever"
"al times so I can try ou"
"t how scrolling works";
s32 Len = wcslen(DummyText);
wcsncpy(Text, DummyText, Len);
TextLen = Len;
}
#endif
while (ev.key != TB_KEY_CTRL_C)
{
tb_clear();
DrawBox(BoxR, 0);
#if 1
{
s32 SearchIndex = TextR.W;
s32 PrevIndex = 0;
s32 BreakOffset = 0;
s32 YOffset = 0;
if (TextLen - TextOffset <= TextR.W)
{
PrintString(TextR.X, TextR.Y, 0, 0, Text + TextOffset, TextLen);
}
else
{
while (SearchIndex < TextLen - TextOffset)
{
while (Text[SearchIndex] != ' ')
{
SearchIndex--;
if (SearchIndex == PrevIndex)
{
SearchIndex += TextR.W;
break;
}
}
BreakOffset = (PrevIndex == SearchIndex) ? TextR.W : SearchIndex - PrevIndex;
PrintString(TextR.X, TextR.Y + YOffset, 0, 0,
Text + TextOffset + PrevIndex, BreakOffset);
YOffset++;
if (YOffset == TextR.H)
{
break;
}
PrevIndex = SearchIndex;
SearchIndex += TextR.W;
}
if (YOffset < TextR.H)
{
PrintString(TextR.X, TextR.Y + YOffset, 0, 0,
Text + TextOffset + PrevIndex,
TextLen - TextOffset - PrevIndex);
}
}
}
#endif
tb_printf(BoxR.X, BoxR.Y, 0, 0,
"#%d/%d +%d",
TextPos, TextLen,
TextOffset);
tb_printf(BoxR.X, BoxR.Y + BoxR.H, 0, 0,
"'%lc'/'%lc'",
ev.ch ? ev.ch : L'|', Text[TextPos] ? ev.ch : L'|');
tb_present();
tb_poll_event(&ev);
switch (ev.key)
{
case TB_KEY_ARROW_RIGHT:
{
if (TextPos == TextLen) break;
TextPos++;
Right(TextR, &TextOffset);
continue;
} break;
case TB_KEY_ARROW_LEFT:
{
if (TextPos == 0) break;
TextPos--;
Left(TextR, &TextOffset);
continue;
} break;
case TB_KEY_CTRL_8:
{
if (TextPos == 0) break;
TextPos--;
TextLen--;
memmove(Text + TextPos,
Text + TextPos + 1,
(MAX_INPUT_LEN - TextPos - 1)*sizeof(*Text));
Left(TextR, &TextOffset);
continue;
} break;
}
if (!ev.mod && ev.ch && TextLen < MAX_INPUT_LEN)
{
if (TextPos < TextLen)
{
memmove(Text + TextPos + 1,
Text + TextPos,
(MAX_INPUT_LEN - TextPos - 1)*sizeof(*Text));
}
Text[TextPos] = ev.ch;
TextPos++;
TextLen++;
// Advance more if wrapping will happen
if (global.cursor_x == TextR.X + TextR.W - 1 &&
Text)
Right(TextR, &TextOffset);
}
}
tb_shutdown();
return 0;
}
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