693 lines
23 KiB
C++
693 lines
23 KiB
C++
/*
|
|
4coder_layout_rule.cpp - Built in layout rules and layout rule helpers.
|
|
*/
|
|
|
|
// TOP
|
|
|
|
function i64
|
|
layout_index_from_ptr(u8 *ptr, u8 *string_base, i64 index_base){
|
|
return((i64)(ptr - string_base) + index_base);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
get_empty_item_list(Range_i64 input_range){
|
|
Layout_Item_List list = {};
|
|
list.input_index_range = input_range;
|
|
list.manifested_index_range = Ii64_neg_inf;
|
|
return(list);
|
|
}
|
|
|
|
function void
|
|
layout_item_list_finish(Layout_Item_List *list, f32 bottom_padding){
|
|
list->bottom_padding = bottom_padding;
|
|
list->height += bottom_padding;
|
|
}
|
|
|
|
function void
|
|
layout_write(Arena *arena, Layout_Item_List *list,
|
|
i64 index, u32 codepoint, Layout_Item_Flag flags, Rect_f32 rect){
|
|
Temp_Memory restore_point = begin_temp(arena);
|
|
Layout_Item *item = push_array(arena, Layout_Item, 1);
|
|
|
|
Layout_Item_Block *block = list->first;
|
|
if (block != 0){
|
|
if (block->items + block->count == item){
|
|
block->count += 1;
|
|
}
|
|
else{
|
|
block = 0;
|
|
}
|
|
}
|
|
if (block == 0){
|
|
end_temp(restore_point);
|
|
block = push_array(arena, Layout_Item_Block, 1);
|
|
item = push_array(arena, Layout_Item, 1);
|
|
sll_queue_push(list->first, list->last, block);
|
|
list->node_count += 1;
|
|
block->items = item;
|
|
block->count = 1;
|
|
}
|
|
list->total_count += 1;
|
|
|
|
if (index < list->manifested_index_range.min){
|
|
list->manifested_index_range.min = index;
|
|
}
|
|
if (index > list->manifested_index_range.max){
|
|
block->character_count += 1;
|
|
list->character_count += 1;
|
|
list->manifested_index_range.max = index;
|
|
}
|
|
|
|
item->index = index;
|
|
item->codepoint = codepoint;
|
|
item->flags = flags;
|
|
item->rect = rect;
|
|
list->height = max(list->height, rect.y1);
|
|
}
|
|
|
|
////
|
|
|
|
function Newline_Layout_Vars
|
|
get_newline_layout_vars(void){
|
|
Newline_Layout_Vars result = {};
|
|
result.newline_character_index = -1;
|
|
return(result);
|
|
}
|
|
|
|
function void
|
|
newline_layout_consume_CR(Newline_Layout_Vars *vars, i64 index){
|
|
if (!vars->consuming_newline_characters){
|
|
vars->consuming_newline_characters = true;
|
|
vars->newline_character_index = index;
|
|
}
|
|
vars->prev_did_emit_newline = false;
|
|
}
|
|
|
|
function i64
|
|
newline_layout_consume_LF(Newline_Layout_Vars *vars, i64 index){
|
|
if (!vars->consuming_newline_characters){
|
|
vars->newline_character_index = index;
|
|
}
|
|
vars->prev_did_emit_newline = true;
|
|
vars->consuming_newline_characters = false;
|
|
return(vars->newline_character_index);
|
|
}
|
|
|
|
function void
|
|
newline_layout_consume_default(Newline_Layout_Vars *vars){
|
|
vars->consuming_newline_characters = false;
|
|
vars->prev_did_emit_newline = false;
|
|
}
|
|
|
|
function b32
|
|
newline_layout_consume_finish(Newline_Layout_Vars *vars){
|
|
return((!vars->prev_did_emit_newline));
|
|
}
|
|
|
|
////
|
|
|
|
function LefRig_TopBot_Layout_Vars
|
|
get_lr_tb_layout_vars(Face_Advance_Map *advance_map, Face_Metrics *metrics, f32 width){
|
|
f32 text_height = metrics->text_height;
|
|
f32 line_height = metrics->line_height;
|
|
|
|
LefRig_TopBot_Layout_Vars result = {};
|
|
result.advance_map = advance_map;
|
|
result.metrics = metrics;
|
|
result.line_to_text_shift = text_height - line_height;
|
|
|
|
result.blank_dim = V2f32(metrics->space_advance, text_height);
|
|
|
|
result.line_y = line_height;
|
|
result.text_y = text_height;
|
|
result.width = width;
|
|
return(result);
|
|
}
|
|
|
|
function b32
|
|
lr_tb_crosses_width(LefRig_TopBot_Layout_Vars *vars, f32 advance, f32 width){
|
|
return(vars->p.x + advance > width);
|
|
}
|
|
|
|
function b32
|
|
lr_tb_crosses_width(LefRig_TopBot_Layout_Vars *vars, f32 advance){
|
|
return(vars->p.x + advance > vars->width);
|
|
}
|
|
|
|
function f32
|
|
lr_tb_advance(LefRig_TopBot_Layout_Vars *vars, u32 codepoint){
|
|
return(font_get_glyph_advance(vars->advance_map, vars->metrics, codepoint));
|
|
}
|
|
|
|
function void
|
|
lr_tb_write_with_advance(LefRig_TopBot_Layout_Vars *vars, f32 advance,
|
|
Arena *arena, Layout_Item_List *list, i64 index, u32 codepoint){
|
|
if (codepoint == '\t'){
|
|
codepoint = ' ';
|
|
}
|
|
vars->p.x = f32_ceil32(vars->p.x);
|
|
f32 next_x = vars->p.x + advance;
|
|
layout_write(arena, list, index, codepoint, 0,
|
|
Rf32(vars->p, V2f32(next_x, vars->text_y)));
|
|
vars->p.x = next_x;
|
|
}
|
|
|
|
function void
|
|
lr_tb_write(LefRig_TopBot_Layout_Vars *vars,
|
|
Arena *arena, Layout_Item_List *list, i64 index, u32 codepoint){
|
|
f32 advance = lr_tb_advance(vars, codepoint);
|
|
lr_tb_write_with_advance(vars, advance, arena, list, index, codepoint);
|
|
}
|
|
|
|
function f32
|
|
lr_tb_advance_byte(LefRig_TopBot_Layout_Vars *vars){
|
|
return(vars->metrics->byte_advance);
|
|
}
|
|
|
|
function void
|
|
lr_tb_write_byte_with_advance(LefRig_TopBot_Layout_Vars *vars, f32 advance,
|
|
Arena *arena, Layout_Item_List *list, i64 index, u8 byte){
|
|
Face_Metrics *metrics = vars->metrics;
|
|
|
|
f32 final_next_x = vars->p.x + advance;
|
|
u32 lo = ((u32)byte)&0xF;
|
|
u32 hi = ((u32)byte >> 4)&0xF;
|
|
|
|
Vec2_f32 p = vars->p;
|
|
p.x = f32_ceil32(p.x);
|
|
f32 next_x = p.x + metrics->byte_sub_advances[0];
|
|
f32 text_y = vars->text_y;
|
|
|
|
layout_write(arena, list, index, '\\', 0,
|
|
Rf32(p, V2f32(next_x, text_y)));
|
|
p.x = next_x;
|
|
next_x += metrics->byte_sub_advances[1];
|
|
layout_write(arena, list, index, integer_symbols[hi], 0,
|
|
Rf32(p, V2f32(next_x, text_y)));
|
|
p.x = next_x;
|
|
next_x += metrics->byte_sub_advances[2];
|
|
layout_write(arena, list, index, integer_symbols[lo], 0,
|
|
Rf32(p, V2f32(next_x, text_y)));
|
|
|
|
vars->p.x = final_next_x;
|
|
}
|
|
|
|
function void
|
|
lr_tb_write_byte(LefRig_TopBot_Layout_Vars *vars,
|
|
Arena *arena, Layout_Item_List *list, i64 index, u8 byte){
|
|
lr_tb_write_byte_with_advance(vars, vars->metrics->byte_advance,
|
|
arena, list, index, byte);
|
|
}
|
|
|
|
function void
|
|
lr_tb_write_blank_dim(LefRig_TopBot_Layout_Vars *vars, Vec2_f32 dim,
|
|
Arena *arena, Layout_Item_List *list, i64 index){
|
|
layout_write(arena, list, index, ' ', 0, Rf32_xy_wh(vars->p, dim));
|
|
vars->p.x += dim.x;
|
|
}
|
|
|
|
function void
|
|
lr_tb_write_blank(LefRig_TopBot_Layout_Vars *vars,
|
|
Arena *arena, Layout_Item_List *list, i64 index){
|
|
lr_tb_write_blank_dim(vars, vars->blank_dim, arena, list, index);
|
|
}
|
|
|
|
function void
|
|
lr_tb_next_line(LefRig_TopBot_Layout_Vars *vars){
|
|
vars->p.x = 0.f;
|
|
vars->p.y = vars->line_y;
|
|
vars->line_y += vars->metrics->line_height;
|
|
vars->text_y = vars->line_y + vars->line_to_text_shift;
|
|
}
|
|
|
|
function void
|
|
lr_tb_next_line_padded(LefRig_TopBot_Layout_Vars *vars, f32 top, f32 bot){
|
|
vars->p.x = 0.f;
|
|
vars->p.y = vars->line_y + top;
|
|
vars->line_y += top + vars->metrics->line_height;
|
|
vars->text_y = vars->line_y + vars->line_to_text_shift;
|
|
vars->line_y += bot;
|
|
}
|
|
|
|
function void
|
|
lr_tb_advance_x_without_item(LefRig_TopBot_Layout_Vars *vars, f32 advance){
|
|
vars->p.x += advance;
|
|
}
|
|
|
|
////////////////////////////////
|
|
|
|
function Layout_Item_List
|
|
layout_unwrapped_small_blank_lines(Application_Links *app, Arena *arena,
|
|
Buffer_ID buffer, Range_i64 range, Face_ID face,
|
|
f32 width){
|
|
Layout_Item_List list = get_empty_item_list(range);
|
|
|
|
Scratch_Block scratch(app);
|
|
String_Const_u8 text = push_buffer_range(app, scratch, buffer, range);
|
|
|
|
Face_Advance_Map advance_map = get_face_advance_map(app, face);
|
|
Face_Metrics metrics = get_face_metrics(app, face);
|
|
LefRig_TopBot_Layout_Vars pos_vars = get_lr_tb_layout_vars(&advance_map, &metrics, width);
|
|
|
|
pos_vars.blank_dim = V2f32(metrics.space_advance, metrics.text_height*0.5f);
|
|
|
|
if (text.size == 0){
|
|
lr_tb_write_blank(&pos_vars, arena, &list, range.start);
|
|
}
|
|
else{
|
|
Newline_Layout_Vars newline_vars = get_newline_layout_vars();
|
|
|
|
b32 all_whitespace = true;
|
|
for (umem i = 0; i < text.size; i += 1){
|
|
if (!character_is_whitespace(text.str[i])){
|
|
all_whitespace = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!all_whitespace){
|
|
pos_vars.blank_dim.y = metrics.text_height;
|
|
}
|
|
|
|
u8 *ptr = text.str;
|
|
u8 *end_ptr = ptr + text.size;
|
|
for (;ptr < end_ptr;){
|
|
Character_Consume_Result consume = utf8_consume(ptr, (umem)(end_ptr - ptr));
|
|
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
switch (consume.codepoint){
|
|
case '\t':
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
Vec2_f32 dim = pos_vars.blank_dim;
|
|
dim.x = lr_tb_advance(&pos_vars, '\t');
|
|
lr_tb_write_blank_dim(&pos_vars, dim,
|
|
arena, &list, index);
|
|
}break;
|
|
|
|
case ' ':
|
|
case '\f':
|
|
case '\v':
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}break;
|
|
|
|
default:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write(&pos_vars, arena, &list, index, consume.codepoint);
|
|
}break;
|
|
|
|
case '\r':
|
|
{
|
|
newline_layout_consume_CR(&newline_vars, index);
|
|
}break;
|
|
|
|
case '\n':
|
|
{
|
|
i64 newline_index = newline_layout_consume_LF(&newline_vars, index);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, newline_index);
|
|
lr_tb_next_line(&pos_vars);
|
|
}break;
|
|
|
|
case max_u32:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write_byte(&pos_vars, arena, &list, index, *ptr);
|
|
}break;
|
|
}
|
|
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
if (newline_layout_consume_finish(&newline_vars)){
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}
|
|
}
|
|
|
|
layout_item_list_finish(&list, -pos_vars.line_to_text_shift);
|
|
|
|
return(list);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
layout_unwrapped(Application_Links *app, Arena *arena, Buffer_ID buffer,
|
|
Range_i64 range, Face_ID face, f32 width){
|
|
Layout_Item_List list = get_empty_item_list(range);
|
|
|
|
Scratch_Block scratch(app);
|
|
String_Const_u8 text = push_buffer_range(app, scratch, buffer, range);
|
|
|
|
Face_Advance_Map advance_map = get_face_advance_map(app, face);
|
|
Face_Metrics metrics = get_face_metrics(app, face);
|
|
LefRig_TopBot_Layout_Vars pos_vars = get_lr_tb_layout_vars(&advance_map, &metrics, width);
|
|
|
|
if (text.size == 0){
|
|
lr_tb_write_blank(&pos_vars, arena, &list, range.first);
|
|
}
|
|
else{
|
|
Newline_Layout_Vars newline_vars = get_newline_layout_vars();
|
|
|
|
u8 *ptr = text.str;
|
|
u8 *end_ptr = ptr + text.size;
|
|
for (;ptr < end_ptr;){
|
|
Character_Consume_Result consume = utf8_consume(ptr, (umem)(end_ptr - ptr));
|
|
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
switch (consume.codepoint){
|
|
default:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write(&pos_vars, arena, &list, index, consume.codepoint);
|
|
}break;
|
|
|
|
case '\r':
|
|
{
|
|
newline_layout_consume_CR(&newline_vars, index);
|
|
}break;
|
|
|
|
case '\n':
|
|
{
|
|
i64 newline_index = newline_layout_consume_LF(&newline_vars, index);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, newline_index);
|
|
lr_tb_next_line(&pos_vars);
|
|
}break;
|
|
|
|
case max_u32:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write_byte(&pos_vars, arena, &list, index, *ptr);
|
|
}break;
|
|
}
|
|
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
if (newline_layout_consume_finish(&newline_vars)){
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}
|
|
}
|
|
|
|
layout_item_list_finish(&list, -pos_vars.line_to_text_shift);
|
|
|
|
return(list);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
layout_wrap_anywhere(Application_Links *app, Arena *arena, Buffer_ID buffer,
|
|
Range_i64 range, Face_ID face, f32 width){
|
|
Scratch_Block scratch(app);
|
|
|
|
Layout_Item_List list = get_empty_item_list(range);
|
|
|
|
String_Const_u8 text = push_buffer_range(app, scratch, buffer, range);
|
|
|
|
Face_Advance_Map advance_map = get_face_advance_map(app, face);
|
|
Face_Metrics metrics = get_face_metrics(app, face);
|
|
LefRig_TopBot_Layout_Vars pos_vars = get_lr_tb_layout_vars(&advance_map, &metrics, width);
|
|
|
|
if (text.size == 0){
|
|
lr_tb_write_blank(&pos_vars, arena, &list, range.first);
|
|
}
|
|
else{
|
|
b32 first_of_the_line = true;
|
|
Newline_Layout_Vars newline_vars = get_newline_layout_vars();
|
|
|
|
u8 *ptr = text.str;
|
|
u8 *end_ptr = ptr + text.size;
|
|
for (;ptr < end_ptr;){
|
|
Character_Consume_Result consume = utf8_consume(ptr, (umem)(end_ptr - ptr));
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
switch (consume.codepoint){
|
|
default:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
f32 advance = lr_tb_advance(&pos_vars, consume.codepoint);
|
|
if (!first_of_the_line && lr_tb_crosses_width(&pos_vars, advance)){
|
|
lr_tb_next_line(&pos_vars);
|
|
}
|
|
lr_tb_write_with_advance(&pos_vars, advance,
|
|
arena, &list, index, consume.codepoint);
|
|
first_of_the_line = false;
|
|
}break;
|
|
|
|
case '\r':
|
|
{
|
|
newline_layout_consume_CR(&newline_vars, index);
|
|
}break;
|
|
|
|
case '\n':
|
|
{
|
|
i64 newline_index = newline_layout_consume_LF(&newline_vars, index);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, newline_index);
|
|
lr_tb_next_line(&pos_vars);
|
|
first_of_the_line = true;
|
|
}break;
|
|
|
|
case max_u32:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
f32 advance = lr_tb_advance_byte(&pos_vars);
|
|
if (!first_of_the_line && lr_tb_crosses_width(&pos_vars, advance)){
|
|
lr_tb_next_line(&pos_vars);
|
|
}
|
|
lr_tb_write_byte_with_advance(&pos_vars, advance,
|
|
arena, &list, index, *ptr);
|
|
first_of_the_line = false;
|
|
}break;
|
|
}
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
if (newline_layout_consume_finish(&newline_vars)){
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}
|
|
}
|
|
|
|
layout_item_list_finish(&list, -pos_vars.line_to_text_shift);
|
|
|
|
return(list);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
layout_wrap_whitespace(Application_Links *app, Arena *arena, Buffer_ID buffer,
|
|
Range_i64 range, Face_ID face, f32 width){
|
|
Scratch_Block scratch(app);
|
|
|
|
Layout_Item_List list = get_empty_item_list(range);
|
|
|
|
String_Const_u8 text = push_buffer_range(app, scratch, buffer, range);
|
|
|
|
Face_Advance_Map advance_map = get_face_advance_map(app, face);
|
|
Face_Metrics metrics = get_face_metrics(app, face);
|
|
LefRig_TopBot_Layout_Vars pos_vars = get_lr_tb_layout_vars(&advance_map, &metrics, width);
|
|
|
|
if (text.size == 0){
|
|
lr_tb_write_blank(&pos_vars, arena, &list, range.first);
|
|
}
|
|
else{
|
|
b32 first_of_the_line = true;
|
|
Newline_Layout_Vars newline_vars = get_newline_layout_vars();
|
|
|
|
u8 *ptr = text.str;
|
|
u8 *end_ptr = ptr + text.size;
|
|
u8 *word_ptr = ptr;
|
|
|
|
if (character_is_whitespace(*ptr)){
|
|
goto consuming_whitespace;
|
|
}
|
|
|
|
consuming_non_whitespace:
|
|
for (;ptr <= end_ptr; ptr += 1){
|
|
if (ptr == end_ptr || character_is_whitespace(*ptr)){
|
|
break;
|
|
}
|
|
}
|
|
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
|
|
String_Const_u8 word = SCu8(word_ptr, ptr);
|
|
u8 *word_end = ptr;
|
|
|
|
if (!first_of_the_line){
|
|
f32 total_advance = 0.f;
|
|
ptr = word.str;
|
|
for (; ptr < word_end;){
|
|
Character_Consume_Result consume =
|
|
utf8_consume(ptr, (umem)(word_end - ptr));
|
|
if (consume.codepoint != max_u32){
|
|
total_advance += lr_tb_advance(&pos_vars, consume.codepoint);
|
|
}
|
|
else{
|
|
total_advance += lr_tb_advance_byte(&pos_vars);
|
|
}
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
if (lr_tb_crosses_width(&pos_vars, total_advance)){
|
|
lr_tb_next_line(&pos_vars);
|
|
}
|
|
}
|
|
|
|
ptr = word.str;
|
|
|
|
for (; ptr < word_end;){
|
|
Character_Consume_Result consume =
|
|
utf8_consume(ptr, (umem)(word_end - ptr));
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
|
|
if (consume.codepoint != max_u32){
|
|
lr_tb_write(&pos_vars, arena, &list, index, consume.codepoint);
|
|
}
|
|
else{
|
|
lr_tb_write_byte(&pos_vars, arena, &list, index, *ptr);
|
|
}
|
|
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
first_of_the_line = false;
|
|
}
|
|
|
|
consuming_whitespace:
|
|
for (; ptr < end_ptr; ptr += 1){
|
|
if (!character_is_whitespace(*ptr)){
|
|
word_ptr = ptr;
|
|
goto consuming_non_whitespace;
|
|
}
|
|
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
switch (*ptr){
|
|
default:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
f32 advance = lr_tb_advance(&pos_vars, *ptr);
|
|
if (!first_of_the_line && lr_tb_crosses_width(&pos_vars, advance)){
|
|
lr_tb_next_line(&pos_vars);
|
|
}
|
|
lr_tb_write_with_advance(&pos_vars, advance,
|
|
arena, &list, index, *ptr);
|
|
first_of_the_line = false;
|
|
}break;
|
|
|
|
case '\r':
|
|
{
|
|
newline_layout_consume_CR(&newline_vars, index);
|
|
}break;
|
|
|
|
case '\n':
|
|
{
|
|
u64 newline_index = newline_layout_consume_LF(&newline_vars, index);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, newline_index);
|
|
lr_tb_next_line(&pos_vars);
|
|
first_of_the_line = true;
|
|
}break;
|
|
}
|
|
}
|
|
|
|
if (newline_layout_consume_finish(&newline_vars)){
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}
|
|
}
|
|
|
|
layout_item_list_finish(&list, -pos_vars.line_to_text_shift);
|
|
|
|
return(list);
|
|
}
|
|
|
|
function Layout_Item_List
|
|
layout_virt_indent_unwrapped(Application_Links *app, Arena *arena,
|
|
Buffer_ID buffer, Range_i64 range, Face_ID face,
|
|
f32 width){
|
|
Scratch_Block scratch(app);
|
|
|
|
Layout_Item_List list = get_empty_item_list(range);
|
|
|
|
String_Const_u8 text = push_buffer_range(app, scratch, buffer, range);
|
|
|
|
Face_Advance_Map advance_map = get_face_advance_map(app, face);
|
|
Face_Metrics metrics = get_face_metrics(app, face);
|
|
LefRig_TopBot_Layout_Vars pos_vars = get_lr_tb_layout_vars(&advance_map, &metrics, width);
|
|
|
|
if (text.size == 0){
|
|
lr_tb_write_blank(&pos_vars, arena, &list, range.start);
|
|
}
|
|
else{
|
|
b32 skipping_leading_whitespace = true;
|
|
Newline_Layout_Vars newline_vars = get_newline_layout_vars();
|
|
|
|
u8 *ptr = text.str;
|
|
u8 *end_ptr = ptr + text.size;
|
|
for (;ptr < end_ptr;){
|
|
Character_Consume_Result consume = utf8_consume(ptr, (umem)(end_ptr - ptr));
|
|
|
|
if (consume.codepoint != ' ' &&
|
|
consume.codepoint != '\t'){
|
|
skipping_leading_whitespace = false;
|
|
}
|
|
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
switch (consume.codepoint){
|
|
case '\t':
|
|
case ' ':
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
f32 advance = lr_tb_advance(&pos_vars, consume.codepoint);
|
|
if (!skipping_leading_whitespace){
|
|
lr_tb_write_with_advance(&pos_vars, advance,
|
|
arena, &list, index,
|
|
consume.codepoint);
|
|
}
|
|
else{
|
|
lr_tb_advance_x_without_item(&pos_vars, advance);
|
|
}
|
|
}break;
|
|
|
|
default:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write(&pos_vars, arena, &list, index, consume.codepoint);
|
|
}break;
|
|
|
|
case '\r':
|
|
{
|
|
newline_layout_consume_CR(&newline_vars, index);
|
|
}break;
|
|
|
|
case '\n':
|
|
{
|
|
i64 newline_index = newline_layout_consume_LF(&newline_vars, index);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, newline_index);
|
|
lr_tb_next_line(&pos_vars);
|
|
}break;
|
|
|
|
case max_u32:
|
|
{
|
|
newline_layout_consume_default(&newline_vars);
|
|
lr_tb_write_byte(&pos_vars, arena, &list, index, *ptr);
|
|
}break;
|
|
}
|
|
|
|
ptr += consume.inc;
|
|
}
|
|
|
|
if (newline_layout_consume_finish(&newline_vars)){
|
|
i64 index = layout_index_from_ptr(ptr, text.str, range.first);
|
|
lr_tb_write_blank(&pos_vars, arena, &list, index);
|
|
}
|
|
}
|
|
|
|
layout_item_list_finish(&list, -pos_vars.line_to_text_shift);
|
|
|
|
return(list);
|
|
}
|
|
|
|
// BOTTOM
|
|
|