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4coder_fleury_pos_context_tooltips.cpp
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4coder_fleury_pos_context_tooltips.cpp
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internal Vec2_f32
_F4_PosContext_RenderDefinitionTokens(Application_Links *app, Face_ID face,
String_Const_u8 backing_string,
Token_Array tokens, b32 do_render,
int highlight_arg, Vec2_f32 text_position,
f32 max_x)
{
Scratch_Block scratch(app);
Vec2_f32 starting_text_pos = text_position;
Face_Metrics metrics = get_face_metrics(app, face);
Token_Iterator_Array it = token_iterator_pos(0, &tokens, 0);
b32 found_first_open_paren = 0;
for(int arg_idx = 0;;)
{
Token *token = token_it_read(&it);
if(token == 0) { break; }
if(token->kind == TokenBaseKind_Whitespace)
{
text_position.x += get_string_advance(app, face, string_u8_litexpr(" "));
}
else
{
ARGB_Color color = finalize_color(defcolor_text_default, 0);
if(token->kind == TokenBaseKind_StatementClose)
{
String_Const_u8 str = string_substring(backing_string, Ii64(token));
if(string_match(str, S8Lit(",")))
{
arg_idx += 1;
}
}
else if(token->kind == TokenBaseKind_ParentheticalOpen)
{
found_first_open_paren = 1;
}
// NOTE(rjf): Highlight
b32 highlight = 0;
if(found_first_open_paren && arg_idx == highlight_arg &&
(token->kind == TokenBaseKind_Identifier ||
token->kind == TokenBaseKind_Operator ||
token->kind == TokenBaseKind_Keyword))
{
color = finalize_color(fleury_color_token_highlight, 0);
highlight = 1;
}
Vec2_f32 start_pos = text_position;
String_Const_u8 token_string = string_substring(backing_string,
Ii64(token->pos, token->pos+token->size));
f32 string_advance = get_string_advance(app, face, token_string);
if(text_position.x + string_advance >= max_x)
{
text_position.x = starting_text_pos.x;
text_position.y += metrics.line_height;
}
if(do_render)
{
draw_string(app, face, token_string, text_position, color);
}
text_position.x += string_advance;
if(highlight)
{
if(do_render)
{
draw_rectangle(app, Rf32(start_pos.x, start_pos.y + metrics.line_height,
text_position.x, start_pos.y + metrics.line_height + 2.f),
1.f, color);
}
}
}
if(token_it_inc_all(&it) == 0)
{
break;
}
}
return text_position;
}
internal void
F4_PosContext_Render(Application_Links *app, View_ID view, Buffer_ID buffer,
Text_Layout_ID text_layout_id, i64 pos)
{
if(def_get_config_b32(vars_save_string_lit("f4_disable_poscontext")))
{
return;
}
ProfileScope(app, "[F4] Pos Context Rendering");
Scratch_Block scratch(app);
Rect_f32 cursor_rect = text_layout_character_on_screen(app, text_layout_id, pos);
Rect_f32 view_rect = view_get_screen_rect(app, view);
Face_ID face = global_small_code_face;
Face_Metrics metrics = get_face_metrics(app, face);
F4_Language *language = F4_LanguageFromBuffer(app, buffer);
f32 padding = 4.f;
if(language != 0)
{
b32 render_at_cursor = 1;
if(def_get_config_b32(vars_save_string_lit("f4_poscontext_draw_at_bottom_of_buffer")))
{
render_at_cursor = 0;
}
Vec2_f32 tooltip_position =
{
global_cursor_rect.x0,
global_cursor_rect.y1,
};
F4_Language_PosContextData *ctx_list = language->PosContext(app, scratch, buffer, pos);
if(render_at_cursor == 0)
{
f32 height = 0;
for(F4_Language_PosContextData *ctx = ctx_list; ctx; ctx = ctx->next)
{
height += metrics.line_height + 2*padding;
}
tooltip_position = V2f32(view_rect.x0, view_rect.y1 - height);
}
for(F4_Language_PosContextData *ctx = ctx_list; ctx; ctx = ctx->next)
{
F4_Index_Note *note = ctx->relevant_note;
if(note != 0 && note->file != 0)
{
//~ NOTE(rjf): Function arguments.
if(note->kind == F4_Index_NoteKind_Function ||
note->kind == F4_Index_NoteKind_Macro)
{
// NOTE(rjf): Find range of definition + params
Range_i64 definition_range = note->range;
{
Token_Array defbuffer_tokens = get_token_array_from_buffer(app, note->file->buffer);
Token_Iterator_Array it = token_iterator_pos(0, &defbuffer_tokens, note->range.min);
int paren_nest = 0;
for(;token_it_inc_all(&it);)
{
Token *token = token_it_read(&it);
if(token)
{
if(token->kind == TokenBaseKind_ParentheticalOpen)
{
paren_nest += 1;
}
if(token->kind == TokenBaseKind_ParentheticalClose)
{
paren_nest -= 1;
if(paren_nest == 0)
{
definition_range.max = token->pos + token->size;
break;
}
}
}
}
}
String_Const_u8 definition_string = push_buffer_range(app, scratch, note->file->buffer, definition_range);
Token_Array definition_tokens = token_array_from_text(app, scratch, definition_string);
// NOTE(rjf): Calculate needed size for this tooltip.
f32 max_x = view_rect.x1-view_rect.x0;
Vec2_f32 end_draw_position = _F4_PosContext_RenderDefinitionTokens(app, face, definition_string, definition_tokens,
false, 0, V2f32(0, 0), max_x);
Vec2_f32 needed_size =
{
(end_draw_position.y > 0) ? max_x : end_draw_position.x,
end_draw_position.y,
};
Rect_f32 draw_rect =
{
tooltip_position.x,
tooltip_position.y,
tooltip_position.x + needed_size.x + 2*padding,
tooltip_position.y + needed_size.y + metrics.line_height + 2*padding,
};
if(draw_rect.x1 > view_rect.x1)
{
f32 width = rect_width(draw_rect);
draw_rect.x0 = (f32)(int)(view_rect.x1 - width);
draw_rect.x1 = view_rect.x1;
}
if(draw_rect.y1 > view_rect.y1)
{
f32 height = rect_height(draw_rect);
draw_rect.y0 = (f32)(int)(view_rect.y1 - height);
draw_rect.y1 = view_rect.y1;
}
F4_DrawTooltipRect(app, draw_rect);
// NOTE(rjf): Render tokens of definition
{
Vec2_f32 text_position =
{
draw_rect.x0 + padding,
draw_rect.y0 + padding,
};
_F4_PosContext_RenderDefinitionTokens(app, face, definition_string, definition_tokens,
true, ctx->argument_index,
text_position,
view_rect.x1);
}
f32 advance = draw_rect.y1 - draw_rect.y0;
tooltip_position.y += advance;
}
else if(note->kind == F4_Index_NoteKind_Type)
{
Token_Array defbuffer_tokens = get_token_array_from_buffer(app, note->file->buffer);
for(F4_Index_Note *member = note->first_child; member; member = member->next_sibling)
{
Range_i64 member_range = member->range;
Token_Iterator_Array it = token_iterator_pos(0, &defbuffer_tokens, member->range.min);
for(;;)
{
Token *token = token_it_read(&it);
if(token)
{
if(token->kind == TokenBaseKind_StatementClose)
{
member_range.max = token->pos;
break;
}
}
else { break; }
if(!token_it_inc_non_whitespace(&it))
{
break;
}
}
String_Const_u8 member_string = push_buffer_range(app, scratch, note->file->buffer, member_range);
Vec2_f32 needed_size = { get_string_advance(app, face, member_string), 0, };
Rect_f32 draw_rect =
{
tooltip_position.x,
tooltip_position.y,
tooltip_position.x + needed_size.x + 2*padding,
tooltip_position.y + needed_size.y + metrics.line_height + 2*padding,
};
F4_DrawTooltipRect(app, draw_rect);
draw_string(app, face, member_string, V2f32(draw_rect.x0 + padding, draw_rect.y0 + padding), finalize_color(defcolor_text_default, 0));
f32 advance = draw_rect.y1 - draw_rect.y0;
tooltip_position.y += advance;
}
}
}
}
}
}