/* * Mr. 4th Dimention - Allen Webster * * 31.03.2019 * * Text layout representation * */ // TOP internal void text_layout_init(Thread_Context *tctx, Text_Layout_Container *container){ block_zero_struct(container); container->node_arena = reserve_arena(tctx); container->table = make_table_u64_u64(tctx->allocator, 20); } internal Text_Layout* text_layout_new__alloc_layout(Text_Layout_Container *container){ Text_Layout *node = container->free_nodes; if (node == 0){ node = push_array(container->node_arena, Text_Layout, 1); } else{ sll_stack_pop(container->free_nodes); } return(node); } internal void text_layout_release(Thread_Context *tctx, Models *models, Text_Layout_Container *container, Text_Layout *layout){ release_arena(tctx, layout->arena); sll_stack_push(container->free_nodes, layout); } internal Text_Layout_ID text_layout_new(Text_Layout_Container *container, Arena *arena, Buffer_ID buffer_id, Buffer_Point point, Range_i64 visible_range, Interval_i64 visible_line_number_range, Rect_f32 rect, FColor *item_colors, Layout_Function *layout_func){ Text_Layout *new_layout_data = text_layout_new__alloc_layout(container); new_layout_data->arena = arena; new_layout_data->buffer_id = buffer_id; new_layout_data->point = point; new_layout_data->visible_range = visible_range; new_layout_data->visible_line_number_range = visible_line_number_range; new_layout_data->rect = rect; new_layout_data->item_colors = item_colors; new_layout_data->layout_func = layout_func; Text_Layout_ID new_id = ++container->id_counter; table_insert(&container->table, new_id, (u64)PtrAsInt(new_layout_data)); return(new_id); } internal Text_Layout* text_layout_get(Text_Layout_Container *container, Text_Layout_ID id){ Text_Layout *result = 0; Table_Lookup lookup = table_lookup(&container->table, id); if (lookup.found_match){ u64 ptr_val = 0; table_read(&container->table, lookup, &ptr_val); result = (Text_Layout*)IntAsPtr(ptr_val); } return(result); } internal b32 text_layout_erase(Thread_Context *tctx, Models *models, Text_Layout_Container *container, Text_Layout_ID id){ b32 result = false; Table_Lookup lookup = table_lookup(&container->table, id); if (lookup.found_match){ u64 ptr_val = 0; table_read(&container->table, lookup, &ptr_val); Text_Layout *ptr = (Text_Layout*)IntAsPtr(ptr_val); text_layout_release(tctx, models, container, ptr); table_erase(&container->table, lookup); result = true; } return(result); } //////////////////////////////// internal void text_layout_render(Thread_Context *tctx, Models *models, Text_Layout *layout){ Editing_File *file = imp_get_file(models, layout->buffer_id); if (file != 0){ Render_Target *target = models->target; Color_Table color_table = models->color_table; Face *face = file_get_face(models, file); f32 width = rect_width(layout->rect); ARGB_Color special_color = color_table.vals[Stag_Special_Character]; ARGB_Color ghost_color = color_table.vals[Stag_Ghost_Character]; Vec2_f32 shift_p = layout->rect.p0 - layout->point.pixel_shift; i64 first_index = layout->visible_range.first; i64 line_number = layout->visible_line_number_range.min; i64 line_number_last = layout->visible_line_number_range.max; Layout_Function *layout_func = layout->layout_func; for (;line_number <= line_number_last; line_number += 1){ Layout_Item_List line = file_get_line_layout(tctx, models, file, layout_func, width, face, line_number); for (Layout_Item_Block *block = line.first; block != 0; block = block->next){ Layout_Item *item = block->items; i64 count = block->count; FColor *item_colors = layout->item_colors; for (i32 i = 0; i < count; i += 1, item += 1){ if (item->codepoint != 0){ ARGB_Color color = 0; if (HasFlag(item->flags, LayoutItemFlag_Special_Character)){ color = special_color; } else if (HasFlag(item->flags, LayoutItemFlag_Ghost_Character)){ color = ghost_color; } else{ FColor fcolor = item_colors[item->index - first_index]; color = finalize_color(color_table, fcolor); } Vec2_f32 p = item->rect.p0 + shift_p; draw_font_glyph(target, face, item->codepoint, p, color, GlyphFlag_None); } } } shift_p.y += line.height; } } } // BOTTOM