public static void nk_textedit_click(nk_text_edit state, float x, float y, NkUserFont font, float row_height)
{
state.cursor = (int)(nk_textedit_locate_coord(state, (float)(x), (float)(y), font, (float)(row_height)));
state.select_start = (int)(state.cursor);
state.select_end = (int)(state.cursor);
state.has_preferred_x = (byte)(0);
}
public static void nk_textedit_layout_row(nk_text_edit_row *r, nk_text_edit edit, int line_start_id, float row_height,
NkUserFont font)
{
int glyphs = (int)(0);
char *remaining;
int len = (int)(edit._string_.Len);
fixed(char *str2 = edit._string_.Str)
{
char *end = str2 + len;
char * text = str2 + line_start_id;
NkVec2 size =
(NkVec2)
(nk_text_calculate_text_bounds(font, text, (int)(end - text), (float)(row_height), &remaining, null, &glyphs,
true));
r->x0 = (float)(0.0f);
r->x1 = (float)(size.x);
r->baseline_y_delta = (float)(size.y);
r->ymin = (float)(0.0f);
r->ymax = (float)(size.y);
r->num_chars = (int)(glyphs);
}
}
public static void nk_textedit_find_charpos(nk_text_find *find, nk_text_edit state, int n, int single_line,
NkUserFont font, float row_height)
{
nk_text_edit_row r = new nk_text_edit_row();
int prev_start = (int)(0);
int z = (int)(state._string_.Len);
int i = (int)(0);
int first;
nk_zero(&r, (ulong)(sizeof(nk_text_edit_row)));
if ((n) == (z))
{
nk_textedit_layout_row(&r, state, (int)(0), (float)(row_height), font);
if ((single_line) != 0)
{
find->first_char = (int)(0);
find->length = (int)(z);
}
else
{
while ((i) < (z))
{
prev_start = (int)(i);
i += (int)(r.num_chars);
nk_textedit_layout_row(&r, state, (int)(i), (float)(row_height), font);
}
find->first_char = (int)(i);
find->length = (int)(r.num_chars);
}
find->x = (float)(r.x1);
find->y = (float)(r.ymin);
find->height = (float)(r.ymax - r.ymin);
find->prev_first = (int)(prev_start);
return;
}
find->y = (float)(0);
for (; ;)
{
nk_textedit_layout_row(&r, state, (int)(i), (float)(row_height), font);
if ((n) < (i + r.num_chars))
{
break;
}
prev_start = (int)(i);
i += (int)(r.num_chars);
find->y += (float)(r.baseline_y_delta);
}
find->first_char = (int)(first = (int)(i));
find->length = (int)(r.num_chars);
find->height = (float)(r.ymax - r.ymin);
find->prev_first = (int)(prev_start);
find->x = (float)(r.x0);
for (i = (int)(0); (first + i) < (n); ++i)
{
find->x += (float)(nk_textedit_get_width(state, (int)(first), (int)(i), font));
}
}
public static void nk_textedit_drag(nk_text_edit state, float x, float y, NkUserFont font, float row_height)
{
int p = (int)(nk_textedit_locate_coord(state, (float)(x), (float)(y), font, (float)(row_height)));
if ((state.select_start) == (state.select_end))
{
state.select_start = (int)(state.cursor);
}
state.cursor = (int)(state.select_end = (int)(p));
}
public static int nk_textedit_locate_coord(nk_text_edit edit, float x, float y, NkUserFont font, float row_height)
{
nk_text_edit_row r = new nk_text_edit_row();
int n = (int)(edit._string_.Len);
float base_y = (float)(0);
float prev_x;
int i = (int)(0);
int k;
r.x0 = (float)(r.x1 = (float)(0));
r.ymin = (float)(r.ymax = (float)(0));
r.num_chars = (int)(0);
while ((i) < (n))
{
nk_textedit_layout_row(&r, edit, (int)(i), (float)(row_height), font);
if (r.num_chars <= 0)
{
return((int)(n));
}
if (((i) == (0)) && ((y) < (base_y + r.ymin)))
{
return((int)(0));
}
if ((y) < (base_y + r.ymax))
{
break;
}
i += (int)(r.num_chars);
base_y += (float)(r.baseline_y_delta);
}
if ((i) >= (n))
{
return((int)(n));
}
if ((x) < (r.x0))
{
return((int)(i));
}
if ((x) < (r.x1))
{
k = (int)(i);
prev_x = (float)(r.x0);
for (i = (int)(0); (i) < (r.num_chars); ++i)
{
float w = (float)(nk_textedit_get_width(edit, (int)(k), (int)(i), font));
if ((x) < (prev_x + w))
{
if ((x) < (prev_x + w / 2))
{
return((int)(k + i));
}
else
{
return((int)(k + i + 1));
}
}
prev_x += (float)(w);
}
}
if ((edit._string_[i + r.num_chars - 1] == ('\n')))
{
return((int)(i + r.num_chars - 1));
}
else
{
return((int)(i + r.num_chars));
}
}
public static float nk_textedit_get_width(nk_text_edit edit, int line_start, int char_id, NkUserFont font)
{
fixed(char *str2 = edit._string_.Str)
{
char *str = str2 + line_start + char_id;
return((float)(font.Width((NkHandle)(font.Userdata), (float)(font.Height), str, 1)));
}
}
public static void nk_textedit_key(nk_text_edit state, NkKeys key, int shift_mod, NkUserFont font, float row_height)
{
retry:
;
switch (key)
{
case NkKeys.NONE:
case NkKeys.CTRL:
case NkKeys.ENTER:
case NkKeys.SHIFT:
case NkKeys.TAB:
case NkKeys.COPY:
case NkKeys.CUT:
case NkKeys.PASTE:
case NkKeys.MAX:
default:
break;
case NkKeys.TEXT_UNDO:
nk_textedit_undo(state);
state.has_preferred_x = (byte)(0);
break;
case NkKeys.TEXT_REDO:
nk_textedit_redo(state);
state.has_preferred_x = (byte)(0);
break;
case NkKeys.TEXT_SELECT_ALL:
nk_textedit_select_all(state);
state.has_preferred_x = (byte)(0);
break;
case NkKeys.TEXT_INSERT_MODE:
if ((state.mode) == (NkTextEditMode.VIEW))
{
state.mode = (NkTextEditMode.INSERT);
}
break;
case NkKeys.TEXT_REPLACE_MODE:
if ((state.mode) == (NkTextEditMode.VIEW))
{
state.mode = (NkTextEditMode.REPLACE);
}
break;
case NkKeys.TEXT_RESET_MODE:
if (((state.mode) == (NkTextEditMode.INSERT)) || ((state.mode) == (NkTextEditMode.REPLACE)))
{
state.mode = (byte)(NkTextEditMode.VIEW);
}
break;
case NkKeys.LEFT:
if ((shift_mod) != 0)
{
nk_textedit_clamp(state);
nk_textedit_prep_selection_at_cursor(state);
if ((state.select_end) > (0))
{
--state.select_end;
}
state.cursor = (int)(state.select_end);
state.has_preferred_x = (byte)(0);
}
else
{
if (((state).select_start != (state).select_end))
{
nk_textedit_move_to_first(state);
}
else if ((state.cursor) > (0))
{
--state.cursor;
}
state.has_preferred_x = (byte)(0);
}
break;
case NkKeys.RIGHT:
if ((shift_mod) != 0)
{
nk_textedit_prep_selection_at_cursor(state);
++state.select_end;
nk_textedit_clamp(state);
state.cursor = (int)(state.select_end);
state.has_preferred_x = (byte)(0);
}
else
{
if (((state).select_start != (state).select_end))
{
nk_textedit_move_to_last(state);
}
else
{
++state.cursor;
}
nk_textedit_clamp(state);
state.has_preferred_x = (byte)(0);
}
break;
case NkKeys.TEXT_WORD_LEFT:
if ((shift_mod) != 0)
{
if (!((state).select_start != (state).select_end))
{
nk_textedit_prep_selection_at_cursor(state);
}
state.cursor = (int)(nk_textedit_move_to_word_previous(state));
state.select_end = (int)(state.cursor);
nk_textedit_clamp(state);
}
else
{
if (((state).select_start != (state).select_end))
{
nk_textedit_move_to_first(state);
}
else
{
state.cursor = (int)(nk_textedit_move_to_word_previous(state));
nk_textedit_clamp(state);
}
}
break;
case NkKeys.TEXT_WORD_RIGHT:
if ((shift_mod) != 0)
{
if (!((state).select_start != (state).select_end))
{
nk_textedit_prep_selection_at_cursor(state);
}
state.cursor = (int)(nk_textedit_move_to_word_next(state));
state.select_end = (int)(state.cursor);
nk_textedit_clamp(state);
}
else
{
if (((state).select_start != (state).select_end))
{
nk_textedit_move_to_last(state);
}
else
{
state.cursor = (int)(nk_textedit_move_to_word_next(state));
nk_textedit_clamp(state);
}
}
break;
case NkKeys.DOWN:
{
nk_text_find find = new nk_text_find();
nk_text_edit_row row = new nk_text_edit_row();
int i;
int sel = (int)(shift_mod);
if ((state.single_line) != 0)
{
key = (NkKeys.RIGHT);
goto retry;
}
if ((sel) != 0)
{
nk_textedit_prep_selection_at_cursor(state);
}
else if (((state).select_start != (state).select_end))
{
nk_textedit_move_to_last(state);
}
nk_textedit_clamp(state);
nk_textedit_find_charpos(&find, state, (int)(state.cursor), (int)(state.single_line), font, (float)(row_height));
if ((find.length) != 0)
{
float x;
float goal_x = (float)((state.has_preferred_x) != 0 ? state.preferred_x : find.x);
int start = (int)(find.first_char + find.length);
state.cursor = (int)(start);
nk_textedit_layout_row(&row, state, (int)(state.cursor), (float)(row_height), font);
x = (float)(row.x0);
for (i = (int)(0); ((i) < (row.num_chars)) && ((x) < (row.x1)); ++i)
{
float dx = (float)(nk_textedit_get_width(state, (int)(start), (int)(i), font));
x += (float)(dx);
if ((x) > (goal_x))
{
break;
}
++state.cursor;
}
nk_textedit_clamp(state);
state.has_preferred_x = (byte)(1);
state.preferred_x = (float)(goal_x);
if ((sel) != 0)
{
state.select_end = (int)(state.cursor);
}
}
}
break;
case NkKeys.UP:
{
nk_text_find find = new nk_text_find();
nk_text_edit_row row = new nk_text_edit_row();
int i;
int sel = (int)(shift_mod);
if ((state.single_line) != 0)
{
key = (NkKeys.LEFT);
goto retry;
}
if ((sel) != 0)
{
nk_textedit_prep_selection_at_cursor(state);
}
else if (((state).select_start != (state).select_end))
{
nk_textedit_move_to_first(state);
}
nk_textedit_clamp(state);
nk_textedit_find_charpos(&find, state, (int)(state.cursor), (int)(state.single_line), font, (float)(row_height));
if (find.prev_first != find.first_char)
{
float x;
float goal_x = (float)((state.has_preferred_x) != 0 ? state.preferred_x : find.x);
state.cursor = (int)(find.prev_first);
nk_textedit_layout_row(&row, state, (int)(state.cursor), (float)(row_height), font);
x = (float)(row.x0);
for (i = (int)(0); ((i) < (row.num_chars)) && ((x) < (row.x1)); ++i)
{
float dx = (float)(nk_textedit_get_width(state, (int)(find.prev_first), (int)(i), font));
x += (float)(dx);
if ((x) > (goal_x))
{
break;
}
++state.cursor;
}
nk_textedit_clamp(state);
state.has_preferred_x = (byte)(1);
state.preferred_x = (float)(goal_x);
if ((sel) != 0)
{
state.select_end = (int)(state.cursor);
}
}
}
break;
case NkKeys.DEL:
if ((state.mode) == (NkTextEditMode.VIEW))
{
break;
}
if (((state).select_start != (state).select_end))
{
nk_textedit_delete_selection(state);
}
else
{
int n = (int)(state._string_.Len);
if ((state.cursor) < (n))
{
nk_textedit_delete(state, (int)(state.cursor), (int)(1));
}
}
state.has_preferred_x = (byte)(0);
break;
case NkKeys.BACKSPACE:
if ((state.mode) == (NkTextEditMode.VIEW))
{
break;
}
if (((state).select_start != (state).select_end))
{
nk_textedit_delete_selection(state);
}
else
{
nk_textedit_clamp(state);
if ((state.cursor) > (0))
{
nk_textedit_delete(state, (int)(state.cursor - 1), (int)(1));
--state.cursor;
}
}
state.has_preferred_x = (byte)(0);
break;
case NkKeys.TEXT_START:
if ((shift_mod) != 0)
{
nk_textedit_prep_selection_at_cursor(state);
state.cursor = (int)(state.select_end = (int)(0));
state.has_preferred_x = (byte)(0);
}
else
{
state.cursor = (int)(state.select_start = (int)(state.select_end = (int)(0)));
state.has_preferred_x = (byte)(0);
}
break;
case NkKeys.TEXT_END:
if ((shift_mod) != 0)
{
nk_textedit_prep_selection_at_cursor(state);
state.cursor = (int)(state.select_end = (int)(state._string_.Len));
state.has_preferred_x = (byte)(0);
}
else
{
state.cursor = (int)(state._string_.Len);
state.select_start = (int)(state.select_end = (int)(0));
state.has_preferred_x = (byte)(0);
}
break;
case NkKeys.TEXT_LINE_START:
{
if ((shift_mod) != 0)
{
nk_text_find find = new nk_text_find();
nk_textedit_clamp(state);
nk_textedit_prep_selection_at_cursor(state);
if (((state._string_.Len) != 0) && ((state.cursor) == (state._string_.Len)))
{
--state.cursor;
}
nk_textedit_find_charpos(&find, state, (int)(state.cursor), (int)(state.single_line), font, (float)(row_height));
state.cursor = (int)(state.select_end = (int)(find.first_char));
state.has_preferred_x = (byte)(0);
}
else
{
nk_text_find find = new nk_text_find();
if (((state._string_.Len) != 0) && ((state.cursor) == (state._string_.Len)))
{
--state.cursor;
}
nk_textedit_clamp(state);
nk_textedit_move_to_first(state);
nk_textedit_find_charpos(&find, state, (int)(state.cursor), (int)(state.single_line), font, (float)(row_height));
state.cursor = (int)(find.first_char);
state.has_preferred_x = (byte)(0);
}
}
break;
case NkKeys.TEXT_LINE_END:
{
if ((shift_mod) != 0)
{
nk_text_find find = new nk_text_find();
nk_textedit_clamp(state);
nk_textedit_prep_selection_at_cursor(state);
nk_textedit_find_charpos(&find, state, (int)(state.cursor), (int)(state.single_line), font, (float)(row_height));
state.has_preferred_x = (byte)(0);
state.cursor = (int)(find.first_char + find.length);
if (((find.length) > (0)) && ((state._string_[(int)(state.cursor - 1)]) == ('\n')))
{
--state.cursor;
}
state.select_end = (int)(state.cursor);
}
else
{
nk_text_find find = new nk_text_find();
nk_textedit_clamp(state);
nk_textedit_move_to_first(state);
nk_textedit_find_charpos(&find, state, (int)(state.cursor), (int)(state.single_line), font, (float)(row_height));
state.has_preferred_x = (byte)(0);
state.cursor = (int)(find.first_char + find.length);
if (((find.length) > (0)) && ((state._string_[(int)(state.cursor - 1)]) == ('\n')))
{
--state.cursor;
}
}
}
break;
}
}
public bool StylePushFont(NkUserFont font)
{
return(Nk.nk_style_push_font(_ctx, font) != 0);
}
public void StyleSetFont(NkUserFont font)
{
Nk.nk_style_set_font(_ctx, font);
}
public void Setup(NkUserFont font)
{
Nk.nk_setup(_ctx, font);
}