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wip: initial input handling

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Daniel Eklöf 2019-06-19 10:04:47 +02:00
parent 3bd77bceb1
commit 71dde121e6
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GPG key ID: 5BBD4992C116573F
9 changed files with 484 additions and 51 deletions
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48
grid.c
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@ -53,42 +53,26 @@ void
grid_cursor_left(struct grid *grid, int count)
{
int move_amount = min(grid->cursor.col, count);
int new_linear = grid->linear_cursor - move_amount;
int new_col = grid->cursor.col - move_amount;
assert(new_linear >= 0);
assert(new_linear < grid->rows * grid->cols);
assert(new_col >= 0);
assert(new_col < grid->cols);
grid->cells[grid->linear_cursor].dirty = true;
grid->cells[new_linear].dirty = true;
grid->linear_cursor = new_linear;
grid->cursor.col = new_col;
grid->dirty = true;
grid->print_needs_wrap = false;
grid_cursor_to(grid, grid->cursor.row, grid->cursor.col - move_amount);
}
void
grid_cursor_right(struct grid *grid, int count)
{
int move_amount = min(grid->cols - grid->cursor.col - 1, count);
int new_linear = grid->linear_cursor + move_amount;
int new_col = grid->cursor.col + move_amount;
assert(new_linear >= 0);
assert(new_linear < grid->rows * grid->cols);
assert(new_col >= 0);
assert(new_col < grid->cols);
grid->cells[grid->linear_cursor].dirty = true;
grid->cells[new_linear].dirty = true;
grid->linear_cursor = new_linear;
grid->cursor.col = new_col;
grid->dirty = true;
grid->print_needs_wrap = false;
grid_cursor_to(grid, grid->cursor.row, grid->cursor.col + move_amount);
}
void
grid_cursor_up(struct grid *grid, int count)
{
int move_amount = min(grid->cursor.row, count);
grid_cursor_to(grid, grid->cursor.row - move_amount, grid->cursor.col);
}
void
grid_cursor_down(struct grid *grid, int count)
{
int move_amount = min(grid->rows - grid->cursor.row - 1, count);
grid_cursor_to(grid, grid->cursor.row + move_amount, grid->cursor.col);
}