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example of basic word level wrapping

master
Allen Webster 2016-09-29 15:39:47 -04:00
parent 40d9aebd64
commit 5dee37296c
2 changed files with 60 additions and 6 deletions
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54
4ed_file_view.cpp
View File

@ -9,7 +9,7 @@
// TOP
#define VWHITE 1
#define VWHITE 0
internal i32
get_or_add_map_index(Models *models, i32 mapid){
@ -998,6 +998,7 @@ file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv
file_allocate_indents_as_needed(&models->mem.general, file, file->state.buffer.line_count);
file_allocate_wrap_positions_as_needed(&models->mem.general, file, file->state.buffer.line_count);
Buffer_Measure_Wrap_Params params;
params.buffer = &file->state.buffer;
params.wrap_line_index = file->state.wrap_line_index;
@ -1005,6 +1006,8 @@ file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv
params.width = (f32)file->settings.display_width;
params.virtual_white = VWHITE;
i32 size = buffer_size(params.buffer);
Buffer_Measure_Wrap_State state = {0};
Buffer_Layout_Stop stop = {0};
@ -1026,6 +1029,52 @@ file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv
switch (stop.status){
case BLStatus_NeedWrapDetermination:
{
Buffer_Stream_Type stream = {0};
i32 stage = 0;
i32 i = stop.pos;
f32 x = stop.x;
if (buffer_stringify_loop(&stream, params.buffer, i, size)){
b32 still_looping = 0;
do{
for (; i < stream.end; ++i){
char ch = stream.data[i];
switch (stage){
case 0:
{
if (char_is_whitespace(ch)){
stage = 1;
}
}break;
case 1:
{
if (!char_is_whitespace(ch)){
goto doublebreak;
}
}break;
}
x += params.adv[ch];
}
still_looping = buffer_stringify_next(&stream);
}while(still_looping);
}
doublebreak:;
wrap_unit_end = i;
if (x > params.width){
do_wrap = 1;
file_allocate_wrap_positions_as_needed(&models->mem.general, file, wrap_position_index);
file->state.wrap_positions[wrap_position_index++] = stop.pos;
}
else{
do_wrap = 0;
}
#if 0
i32 rounded_pos = stop.pos - (stop.pos%11);
if ((rounded_pos % 2) == 1){
do_wrap = 1;
@ -1036,6 +1085,7 @@ file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv
do_wrap = 0;
}
wrap_unit_end = rounded_pos + 11;
#endif
}break;
case BLStatus_NeedWrapLineShift:
@ -1060,7 +1110,7 @@ file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv
++file->state.wrap_line_count;
file_allocate_wrap_positions_as_needed(&models->mem.general, file, wrap_position_index);
file->state.wrap_positions[wrap_position_index++] = buffer_size(&file->state.buffer);
file->state.wrap_positions[wrap_position_index++] = size;
file->state.wrap_position_count = wrap_position_index;
file_update_cursor_positions(models, file);

12
buffer/4coder_buffer_abstract.cpp
View File

@ -673,10 +673,14 @@ buffer_partial_from_line_character(Buffer_Type *buffer, i32 line, i32 character)
Partial_Cursor result = {0};
i32 line_index = line - 1;
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
if (line_index < 0) line_index = 0;
if (line_index >= buffer->line_count){
line_index = buffer->line_count - 1;
}
if (line_index < 0){
line_index = 0;
}
int32_t size = buffer_size(buffer);
i32 size = buffer_size(buffer);
i32 this_start = buffer->line_starts[line_index];
i32 max_character = (size-this_start) + 1;
if (line_index+1 < buffer->line_count){
@ -692,7 +696,7 @@ buffer_partial_from_line_character(Buffer_Type *buffer, i32 line, i32 character)
}
result.pos = this_start + character - 1;
result.line = line_index+1;
result.line = line_index + 1;
result.character = character;
return(result);