diff options
Diffstat (limited to 'box.c')
| -rw-r--r-- | box.c | 48 |
1 files changed, 41 insertions, 7 deletions
@@ -14,7 +14,7 @@ #include <locale.h> #ifdef DEBUG -#define Assert(expr) if (!expr) \ +#define Assert(expr) if (!(expr)) \ { \ tb_shutdown(); \ *(u8*)0 = 0; \ @@ -101,6 +101,38 @@ IsInRect(rect Rect, u32 X, u32 Y) return False; } +void +ScrollLeft(rect Text, u32 *TextOffset, u32 Left) +{ + u32 TextSurface = Text.H * Text.W; + + if (global.cursor_x - Left >= Text.X) + { + global.cursor_x -= Left; + } + else + { + global.cursor_x += Text.W - 1; + + if (global.cursor_y > Text.Y) + { + global.cursor_y--; + } + else + { + global.cursor_y = Text.Y + Text.H - 1; + if (*TextOffset < TextSurface) + { + *TextOffset = 0; + } + else + { + *TextOffset -= TextSurface; + } + } + } +} + int main(void) { @@ -112,7 +144,7 @@ main(void) u32 InputLen = 0; wchar_t Input[MAX_INPUT_LEN] = {0}; -#if 0 +#if 1 wchar_t *t = L"This is some text that no one would want to know, but you could."; u32 Len = wcslen(t); for (u32 At = 0; At < Len; At++) Input[At] = t[At]; @@ -193,7 +225,10 @@ main(void) if (InputPos == 0) break; Delete(Input, InputPos - 1); InputLen--; - global.cursor_x--; + // TODO: scrolling + + ScrollLeft(Text, &TextOffset, 1); + } break; // Delete character forwards case TB_KEY_CTRL_D: @@ -285,15 +320,14 @@ main(void) } } - // Insert new character in Input at InputPos else if (ev.ch && InputLen < MAX_INPUT_LEN) { if (InputPos < InputLen) { - memmove(Input + InputPos + 1, - Input + InputPos, - (InputLen - InputPos - 1) * sizeof(*Input)); + memmove(Input + InputPos, + Input + InputPos - 1, + (InputLen - InputPos + 1) * sizeof(*Input)); } Input[InputPos] = ev.ch; InputLen++; |