| 1 | module renderer_module |
| 2 | use iso_fortran_env, only: int32, output_unit |
| 3 | use terminal_io_module |
| 4 | use text_buffer_module |
| 5 | use utf8_module |
| 6 | use editor_state_module, only: editor_state_t, cursor_t |
| 7 | use bracket_matching_module |
| 8 | use file_tree_module |
| 9 | use file_tree_renderer_module |
| 10 | use syntax_highlighter_module |
| 11 | use diagnostics_module, only: diagnostic_t, get_diagnostics_for_line, & |
| 12 | get_diagnostic_at_cursor, & |
| 13 | SEVERITY_ERROR, SEVERITY_WARNING, SEVERITY_INFO, SEVERITY_HINT |
| 14 | use diagnostics_panel_module, only: render_diagnostics_panel |
| 15 | use references_panel_module, only: render_references_panel |
| 16 | use code_actions_panel_module, only: render_code_actions_panel |
| 17 | use symbols_panel_module, only: render_symbols_panel |
| 18 | use unified_search_module, only: get_matches_on_line, search_mode_active |
| 19 | use lsp_server_installer_panel_module, only: render_lsp_server_installer_panel, & |
| 20 | is_lsp_server_installer_panel_visible |
| 21 | implicit none |
| 22 | private |
| 23 | |
| 24 | public :: render_screen, update_viewport, init_renderer, cleanup_renderer |
| 25 | public :: render_status_bar, render_cursor |
| 26 | public :: show_line_numbers, LINE_NUMBER_WIDTH |
| 27 | public :: render_screen_with_tree, render_screen_with_lsp_panel |
| 28 | public :: tree_state |
| 29 | public :: update_syntax_highlighter |
| 30 | public :: render_cursor_only ! Fast path for cursor-only updates |
| 31 | |
| 32 | ! Configuration |
| 33 | logical :: show_line_numbers = .true. |
| 34 | logical :: highlight_current_line = .true. |
| 35 | integer, parameter :: LINE_NUMBER_WIDTH = 5 ! Width for line number display |
| 36 | |
| 37 | ! Bracket matching state |
| 38 | integer :: bracket_line = 0 |
| 39 | integer :: bracket_col = 0 |
| 40 | integer :: matching_bracket_line = 0 |
| 41 | integer :: matching_bracket_col = 0 |
| 42 | |
| 43 | ! Screen buffer for double buffering |
| 44 | type :: screen_buffer_t |
| 45 | character(len=:), allocatable :: lines(:) |
| 46 | integer :: rows |
| 47 | integer :: cols |
| 48 | logical :: needs_full_redraw |
| 49 | end type screen_buffer_t |
| 50 | |
| 51 | type(screen_buffer_t) :: screen_buffer |
| 52 | |
| 53 | ! File tree state (for fuss mode) |
| 54 | type(tree_state_t) :: tree_state |
| 55 | |
| 56 | ! Syntax highlighting state |
| 57 | type(syntax_highlighter_t) :: syntax_highlighter |
| 58 | character(len=512) :: last_highlighted_filename = "" |
| 59 | |
| 60 | contains |
| 61 | |
| 62 | subroutine init_renderer(rows, cols, filename) |
| 63 | integer, intent(in) :: rows, cols |
| 64 | character(len=*), intent(in), optional :: filename |
| 65 | integer :: i |
| 66 | |
| 67 | screen_buffer%rows = rows |
| 68 | screen_buffer%cols = cols |
| 69 | screen_buffer%needs_full_redraw = .true. |
| 70 | |
| 71 | allocate(character(len=cols) :: screen_buffer%lines(rows)) |
| 72 | do i = 1, rows |
| 73 | screen_buffer%lines(i) = repeat(' ', cols) |
| 74 | end do |
| 75 | |
| 76 | ! Initialize syntax highlighter if filename provided |
| 77 | if (present(filename)) then |
| 78 | call init_highlighter(syntax_highlighter, filename) |
| 79 | last_highlighted_filename = trim(filename) |
| 80 | else |
| 81 | call init_highlighter(syntax_highlighter) |
| 82 | last_highlighted_filename = "" |
| 83 | end if |
| 84 | end subroutine init_renderer |
| 85 | |
| 86 | subroutine cleanup_renderer() |
| 87 | if (allocated(screen_buffer%lines)) deallocate(screen_buffer%lines) |
| 88 | call cleanup_highlighter(syntax_highlighter) |
| 89 | end subroutine cleanup_renderer |
| 90 | |
| 91 | ! Update syntax highlighter for a new filename/language |
| 92 | subroutine update_syntax_highlighter(filename) |
| 93 | character(len=*), intent(in) :: filename |
| 94 | |
| 95 | ! Only update if filename has changed |
| 96 | if (trim(filename) == trim(last_highlighted_filename)) return |
| 97 | |
| 98 | ! Cleanup old language definition and re-initialize |
| 99 | call cleanup_highlighter(syntax_highlighter) |
| 100 | call init_highlighter(syntax_highlighter, filename) |
| 101 | last_highlighted_filename = trim(filename) |
| 102 | end subroutine update_syntax_highlighter |
| 103 | |
| 104 | subroutine render_screen(buffer, editor, match_mode_active, match_case_sens) |
| 105 | type(buffer_t), intent(in) :: buffer |
| 106 | type(editor_state_t), intent(inout) :: editor |
| 107 | logical, intent(in), optional :: match_mode_active |
| 108 | logical, intent(in), optional :: match_case_sens |
| 109 | integer :: screen_row, buffer_line, line_count |
| 110 | character(len=:), allocatable :: line_content |
| 111 | character(len=1) :: cursor_char |
| 112 | integer :: content_width |
| 113 | integer :: start_row, row_offset_val |
| 114 | character(len=16) :: line_num_str |
| 115 | logical :: found_match |
| 116 | type(cursor_t) :: cursor |
| 117 | |
| 118 | ! Auto-update syntax highlighter if filename changed |
| 119 | if (allocated(editor%filename)) then |
| 120 | call update_syntax_highlighter(editor%filename) |
| 121 | end if |
| 122 | |
| 123 | call terminal_hide_cursor() |
| 124 | |
| 125 | ! Render tab bar if there are any tabs |
| 126 | call render_tab_bar(editor) |
| 127 | |
| 128 | ! Check if cursor is on a bracket and find its match |
| 129 | cursor = editor%cursors(editor%active_cursor) |
| 130 | line_content = buffer_get_line(buffer, cursor%line) |
| 131 | if (cursor%column >= 1 .and. cursor%column <= len(line_content)) then |
| 132 | cursor_char = line_content(cursor%column:cursor%column) |
| 133 | if (is_opening_bracket(cursor_char) .or. is_closing_bracket(cursor_char)) then |
| 134 | bracket_line = cursor%line |
| 135 | bracket_col = cursor%column |
| 136 | call find_matching_bracket(buffer, bracket_line, bracket_col, & |
| 137 | found_match, matching_bracket_line, matching_bracket_col) |
| 138 | if (.not. found_match) then |
| 139 | matching_bracket_line = 0 |
| 140 | matching_bracket_col = 0 |
| 141 | end if |
| 142 | else |
| 143 | bracket_line = 0 |
| 144 | bracket_col = 0 |
| 145 | matching_bracket_line = 0 |
| 146 | matching_bracket_col = 0 |
| 147 | end if |
| 148 | else |
| 149 | bracket_line = 0 |
| 150 | bracket_col = 0 |
| 151 | matching_bracket_line = 0 |
| 152 | matching_bracket_col = 0 |
| 153 | end if |
| 154 | if (allocated(line_content)) deallocate(line_content) |
| 155 | |
| 156 | ! Get total lines in buffer |
| 157 | line_count = buffer_get_line_count(buffer) |
| 158 | |
| 159 | ! Calculate content width (accounting for line numbers) |
| 160 | if (show_line_numbers) then |
| 161 | content_width = editor%screen_cols - LINE_NUMBER_WIDTH - 1 ! -1 for separator |
| 162 | else |
| 163 | content_width = editor%screen_cols |
| 164 | end if |
| 165 | |
| 166 | ! Determine starting row based on whether tabs exist |
| 167 | if (size(editor%tabs) > 0) then |
| 168 | start_row = 2 ! Tab bar at row 1 |
| 169 | row_offset_val = 2 |
| 170 | else |
| 171 | start_row = 1 ! No tab bar |
| 172 | row_offset_val = 1 |
| 173 | end if |
| 174 | |
| 175 | ! Render all panes for the active tab |
| 176 | if (size(editor%tabs) > 0 .and. editor%active_tab_index > 0 .and. & |
| 177 | editor%active_tab_index <= size(editor%tabs)) then |
| 178 | if (allocated(editor%tabs(editor%active_tab_index)%panes)) then |
| 179 | call render_all_panes(editor) |
| 180 | ! Render status bar after panes |
| 181 | call render_status_bar(editor, buffer, match_mode_active, match_case_sens) |
| 182 | |
| 183 | ! Render diagnostics panel if visible (for panes path) |
| 184 | if (allocated(editor%filename)) then |
| 185 | block |
| 186 | character(len=:), allocatable :: file_uri, cwd |
| 187 | character(len=1024) :: cwd_buffer |
| 188 | integer :: cwd_len |
| 189 | |
| 190 | ! Get absolute path for file URI |
| 191 | if (editor%filename(1:1) == '/') then |
| 192 | ! Already absolute |
| 193 | file_uri = 'file:///' // trim(editor%filename) |
| 194 | else |
| 195 | ! Relative path - get PWD from environment |
| 196 | call get_environment_variable("PWD", cwd_buffer, cwd_len) |
| 197 | |
| 198 | if (cwd_len > 0) then |
| 199 | cwd = cwd_buffer(1:cwd_len) |
| 200 | file_uri = 'file://' // trim(cwd) // '/' // trim(editor%filename) |
| 201 | else |
| 202 | file_uri = 'file:///' // trim(editor%filename) |
| 203 | end if |
| 204 | end if |
| 205 | |
| 206 | call render_diagnostics_panel(editor%diagnostics_panel, editor%diagnostics, & |
| 207 | file_uri, editor%screen_rows, editor%screen_cols) |
| 208 | end block |
| 209 | end if |
| 210 | |
| 211 | ! Render references panel if visible (for panes path) |
| 212 | call render_references_panel(editor%references_panel, 3) |
| 213 | |
| 214 | ! Render code actions menu if visible (for panes path) |
| 215 | call render_code_actions_panel(editor%code_actions_panel, editor%screen_rows, editor%screen_cols) |
| 216 | |
| 217 | ! Render symbols panel if visible (for panes path) |
| 218 | call render_symbols_panel(editor%symbols_panel, editor%screen_rows) |
| 219 | |
| 220 | ! Render LSP server installer panel if visible (for panes path) |
| 221 | if (is_lsp_server_installer_panel_visible(editor%lsp_installer_panel)) then |
| 222 | call render_lsp_server_installer_panel(editor%lsp_installer_panel, & |
| 223 | editor%screen_cols) |
| 224 | end if |
| 225 | |
| 226 | ! Position cursor for panes |
| 227 | call render_cursor_for_panes(editor) |
| 228 | return ! Exit after rendering panes |
| 229 | end if |
| 230 | end if |
| 231 | |
| 232 | ! Fallback to simple rendering if no tabs/panes |
| 233 | ! Clear and render each visible line |
| 234 | do screen_row = start_row, editor%screen_rows - 1 ! Last row for status bar |
| 235 | buffer_line = editor%viewport_line + screen_row - row_offset_val |
| 236 | |
| 237 | call terminal_move_cursor(screen_row, 1) |
| 238 | |
| 239 | ! Render line number if enabled |
| 240 | if (show_line_numbers) then |
| 241 | if (buffer_line <= line_count) then |
| 242 | ! Format line number, right-aligned |
| 243 | write(line_num_str, '(i5)') buffer_line |
| 244 | |
| 245 | if (buffer_line == editor%cursors(editor%active_cursor)%line) then |
| 246 | ! Highlight current line number |
| 247 | call terminal_write(char(27) // '[1;33m' // adjustl(line_num_str(1:LINE_NUMBER_WIDTH)) & |
| 248 | // char(27) // '[0m ') |
| 249 | else |
| 250 | call terminal_write(char(27) // '[90m' // adjustl(line_num_str(1:LINE_NUMBER_WIDTH)) & |
| 251 | // char(27) // '[0m ') |
| 252 | end if |
| 253 | else |
| 254 | ! Empty line number area for lines beyond file |
| 255 | call terminal_write(repeat(' ', LINE_NUMBER_WIDTH + 1)) |
| 256 | end if |
| 257 | end if |
| 258 | |
| 259 | if (buffer_line <= line_count) then |
| 260 | ! Render actual line content with selections |
| 261 | call render_line_with_selections(buffer, editor, buffer_line, & |
| 262 | editor%viewport_column, content_width) |
| 263 | else |
| 264 | ! Render empty line indicator |
| 265 | if (buffer_line == line_count + 1 .and. line_count == 0) then |
| 266 | ! Empty file |
| 267 | call terminal_write('~' // repeat(' ', content_width - 1)) |
| 268 | else |
| 269 | ! Beyond file content |
| 270 | call terminal_write('~' // repeat(' ', content_width - 1)) |
| 271 | end if |
| 272 | end if |
| 273 | end do |
| 274 | |
| 275 | ! Render status bar |
| 276 | call render_status_bar(editor, buffer, match_mode_active, match_case_sens) |
| 277 | |
| 278 | ! Render diagnostics panel if visible |
| 279 | if (allocated(editor%filename)) then |
| 280 | block |
| 281 | character(len=:), allocatable :: file_uri |
| 282 | file_uri = 'file://' // trim(editor%filename) |
| 283 | call render_diagnostics_panel(editor%diagnostics_panel, editor%diagnostics, & |
| 284 | file_uri, editor%screen_rows, editor%screen_cols) |
| 285 | end block |
| 286 | end if |
| 287 | |
| 288 | ! Render references panel if visible |
| 289 | call render_references_panel(editor%references_panel, 3) |
| 290 | |
| 291 | ! Render code actions menu if visible |
| 292 | call render_code_actions_panel(editor%code_actions_panel, editor%screen_rows, editor%screen_cols) |
| 293 | |
| 294 | ! Render symbols panel if visible |
| 295 | call render_symbols_panel(editor%symbols_panel, editor%screen_rows) |
| 296 | |
| 297 | ! Render LSP server installer panel if visible |
| 298 | if (is_lsp_server_installer_panel_visible(editor%lsp_installer_panel)) then |
| 299 | call render_lsp_server_installer_panel(editor%lsp_installer_panel, & |
| 300 | editor%screen_cols) |
| 301 | end if |
| 302 | |
| 303 | ! Position cursor for panes or regular view |
| 304 | if (size(editor%tabs) > 0 .and. editor%active_tab_index > 0 .and. & |
| 305 | editor%active_tab_index <= size(editor%tabs)) then |
| 306 | if (allocated(editor%tabs(editor%active_tab_index)%panes)) then |
| 307 | call render_cursor_for_panes(editor) |
| 308 | else |
| 309 | call render_cursor(editor, buffer) |
| 310 | end if |
| 311 | else |
| 312 | call render_cursor(editor, buffer) |
| 313 | end if |
| 314 | end subroutine render_screen |
| 315 | |
| 316 | subroutine render_line_with_selections(buffer, editor, line_num, start_col, width) |
| 317 | type(buffer_t), intent(in) :: buffer |
| 318 | type(editor_state_t), intent(in) :: editor |
| 319 | integer, intent(in) :: line_num, start_col, width |
| 320 | character(len=:), allocatable :: line, utf8_ch |
| 321 | integer :: i, char_idx, byte_pos, token_idx, char_count, display_col, char_width |
| 322 | integer :: sel_start_line, sel_start_col, sel_end_line, sel_end_col |
| 323 | logical :: in_selection, is_bracket_match, is_current_line, is_search_match |
| 324 | type(token_t), allocatable :: tokens(:) |
| 325 | character(len=:), allocatable :: token_color |
| 326 | integer :: search_matches(2, 50) ! Up to 50 matches per line (start, end pairs) |
| 327 | integer :: num_search_matches, match_idx |
| 328 | integer :: line_byte_len |
| 329 | |
| 330 | line = buffer_get_line(buffer, line_num) |
| 331 | line_byte_len = len(line) |
| 332 | char_count = utf8_char_count(line) |
| 333 | |
| 334 | ! Get all search matches on this line (these use byte indices) |
| 335 | if (search_mode_active) then |
| 336 | call get_matches_on_line(line, line_num, search_matches, num_search_matches) |
| 337 | else |
| 338 | num_search_matches = 0 |
| 339 | end if |
| 340 | |
| 341 | ! Get syntax tokens for this line (tokens use byte indices) |
| 342 | if (syntax_highlighter%enabled) then |
| 343 | call tokenize_line(syntax_highlighter, line, tokens) |
| 344 | else |
| 345 | allocate(tokens(1)) |
| 346 | tokens(1)%type = TOKEN_PLAIN |
| 347 | tokens(1)%start_col = 1 |
| 348 | tokens(1)%end_col = max(1, line_byte_len) |
| 349 | end if |
| 350 | |
| 351 | ! Check if this is the current line |
| 352 | is_current_line = (line_num == editor%cursors(editor%active_cursor)%line) .and. highlight_current_line |
| 353 | |
| 354 | ! Render each UTF-8 character with selection highlighting |
| 355 | ! char_idx = 1-based character index (for selection logic) |
| 356 | ! display_col = screen column position (for width tracking) |
| 357 | ! byte_pos = byte position in string (for token lookup) |
| 358 | display_col = 0 |
| 359 | char_idx = start_col |
| 360 | |
| 361 | do while (char_idx <= char_count .and. display_col < width) |
| 362 | in_selection = .false. |
| 363 | is_bracket_match = .false. |
| 364 | |
| 365 | ! Get the UTF-8 character at this position |
| 366 | utf8_ch = utf8_char_at(line, char_idx) |
| 367 | char_width = utf8_display_width(utf8_ch) |
| 368 | |
| 369 | ! Get byte position for token lookup |
| 370 | byte_pos = utf8_char_to_byte_index(line, char_idx) |
| 371 | |
| 372 | ! Check if this position is in any cursor's selection |
| 373 | ! (cursor positions are character indices, not byte indices) |
| 374 | do i = 1, size(editor%cursors) |
| 375 | if (editor%cursors(i)%has_selection) then |
| 376 | ! Determine selection bounds (handle both directions) |
| 377 | if (editor%cursors(i)%line < editor%cursors(i)%selection_start_line .or. & |
| 378 | (editor%cursors(i)%line == editor%cursors(i)%selection_start_line .and. & |
| 379 | editor%cursors(i)%column < editor%cursors(i)%selection_start_col)) then |
| 380 | ! Cursor is before selection start (selecting upward) |
| 381 | sel_start_line = editor%cursors(i)%line |
| 382 | sel_start_col = editor%cursors(i)%column |
| 383 | sel_end_line = editor%cursors(i)%selection_start_line |
| 384 | sel_end_col = editor%cursors(i)%selection_start_col |
| 385 | else |
| 386 | ! Cursor is after selection start (selecting downward) |
| 387 | sel_start_line = editor%cursors(i)%selection_start_line |
| 388 | sel_start_col = editor%cursors(i)%selection_start_col |
| 389 | sel_end_line = editor%cursors(i)%line |
| 390 | sel_end_col = editor%cursors(i)%column |
| 391 | end if |
| 392 | |
| 393 | ! Check if this position is selected (using char_idx) |
| 394 | if (line_num > sel_start_line .and. line_num < sel_end_line) then |
| 395 | ! Fully selected line (between start and end) |
| 396 | in_selection = .true. |
| 397 | exit |
| 398 | else if (line_num == sel_start_line .and. line_num == sel_end_line) then |
| 399 | ! Single-line selection |
| 400 | if (char_idx >= sel_start_col .and. char_idx < sel_end_col) then |
| 401 | in_selection = .true. |
| 402 | exit |
| 403 | end if |
| 404 | else if (line_num == sel_start_line .and. line_num < sel_end_line) then |
| 405 | ! First line of multi-line selection |
| 406 | if (char_idx >= sel_start_col) then |
| 407 | in_selection = .true. |
| 408 | exit |
| 409 | end if |
| 410 | else if (line_num == sel_end_line .and. line_num > sel_start_line) then |
| 411 | ! Last line of multi-line selection |
| 412 | if (char_idx < sel_end_col) then |
| 413 | in_selection = .true. |
| 414 | exit |
| 415 | end if |
| 416 | end if |
| 417 | end if |
| 418 | end do |
| 419 | |
| 420 | ! Check if this position is a bracket or its match (using char_idx) |
| 421 | if ((line_num == bracket_line .and. char_idx == bracket_col) .or. & |
| 422 | (line_num == matching_bracket_line .and. char_idx == matching_bracket_col)) then |
| 423 | is_bracket_match = .true. |
| 424 | end if |
| 425 | |
| 426 | ! Check if this position is part of a search match (search uses byte indices) |
| 427 | is_search_match = .false. |
| 428 | if (byte_pos > 0) then |
| 429 | do match_idx = 1, num_search_matches |
| 430 | if (byte_pos >= search_matches(1, match_idx) .and. byte_pos <= search_matches(2, match_idx)) then |
| 431 | is_search_match = .true. |
| 432 | exit |
| 433 | end if |
| 434 | end do |
| 435 | end if |
| 436 | |
| 437 | ! Find which token this column belongs to (tokens use byte indices) |
| 438 | token_color = "" |
| 439 | if (syntax_highlighter%enabled .and. byte_pos > 0) then |
| 440 | do token_idx = 1, size(tokens) |
| 441 | if (byte_pos >= tokens(token_idx)%start_col .and. byte_pos <= tokens(token_idx)%end_col) then |
| 442 | token_color = get_token_color(tokens(token_idx)%type) |
| 443 | exit |
| 444 | end if |
| 445 | end do |
| 446 | end if |
| 447 | |
| 448 | ! Render character with or without highlighting |
| 449 | if (in_selection) then |
| 450 | ! Highlight selected text with reverse video (highest priority) |
| 451 | call terminal_write(char(27) // '[7m' // utf8_ch // char(27) // '[0m') |
| 452 | else if (is_bracket_match) then |
| 453 | ! Highlight matching brackets with cyan background |
| 454 | call terminal_write(char(27) // '[46m' // utf8_ch // char(27) // '[0m') |
| 455 | else if (is_search_match) then |
| 456 | ! Highlight search matches with yellow background |
| 457 | if (len(token_color) > 0) then |
| 458 | call terminal_write(token_color // char(27) // '[43m' // utf8_ch // char(27) // '[0m') |
| 459 | else |
| 460 | call terminal_write(char(27) // '[43m' // utf8_ch // char(27) // '[0m') |
| 461 | end if |
| 462 | else if (is_current_line) then |
| 463 | ! Subtle background for current line with syntax color |
| 464 | if (len(token_color) > 0) then |
| 465 | call terminal_write(token_color // char(27) // '[48;5;236m' // utf8_ch // char(27) // '[0m') |
| 466 | else |
| 467 | call terminal_write(char(27) // '[48;5;236m' // utf8_ch // char(27) // '[0m') |
| 468 | end if |
| 469 | else if (len(token_color) > 0) then |
| 470 | ! Apply syntax highlighting |
| 471 | call terminal_write(token_color // utf8_ch // char(27) // '[0m') |
| 472 | else |
| 473 | call terminal_write(utf8_ch) |
| 474 | end if |
| 475 | |
| 476 | display_col = display_col + char_width |
| 477 | char_idx = char_idx + 1 |
| 478 | end do |
| 479 | |
| 480 | ! Fill remaining width with spaces |
| 481 | do while (display_col < width) |
| 482 | in_selection = .false. |
| 483 | |
| 484 | ! Check if end of line position is in selection |
| 485 | do i = 1, size(editor%cursors) |
| 486 | if (editor%cursors(i)%has_selection) then |
| 487 | ! Determine selection bounds (handle both directions) |
| 488 | if (editor%cursors(i)%line < editor%cursors(i)%selection_start_line .or. & |
| 489 | (editor%cursors(i)%line == editor%cursors(i)%selection_start_line .and. & |
| 490 | editor%cursors(i)%column < editor%cursors(i)%selection_start_col)) then |
| 491 | sel_start_line = editor%cursors(i)%line |
| 492 | sel_start_col = editor%cursors(i)%column |
| 493 | sel_end_line = editor%cursors(i)%selection_start_line |
| 494 | sel_end_col = editor%cursors(i)%selection_start_col |
| 495 | else |
| 496 | sel_start_line = editor%cursors(i)%selection_start_line |
| 497 | sel_start_col = editor%cursors(i)%selection_start_col |
| 498 | sel_end_line = editor%cursors(i)%line |
| 499 | sel_end_col = editor%cursors(i)%column |
| 500 | end if |
| 501 | |
| 502 | ! Check if this position is selected (multi-line aware) |
| 503 | ! Use char_idx which is now past end of line content |
| 504 | if (line_num > sel_start_line .and. line_num < sel_end_line) then |
| 505 | ! Fully selected line |
| 506 | in_selection = .true. |
| 507 | exit |
| 508 | else if (line_num == sel_start_line .and. line_num == sel_end_line) then |
| 509 | ! Single-line selection |
| 510 | if (char_idx >= sel_start_col .and. char_idx < sel_end_col) then |
| 511 | in_selection = .true. |
| 512 | exit |
| 513 | end if |
| 514 | else if (line_num == sel_start_line .and. line_num < sel_end_line) then |
| 515 | ! First line of multi-line selection |
| 516 | if (char_idx >= sel_start_col) then |
| 517 | in_selection = .true. |
| 518 | exit |
| 519 | end if |
| 520 | else if (line_num == sel_end_line .and. line_num > sel_start_line) then |
| 521 | ! Last line of multi-line selection |
| 522 | if (char_idx < sel_end_col) then |
| 523 | in_selection = .true. |
| 524 | exit |
| 525 | end if |
| 526 | end if |
| 527 | end if |
| 528 | end do |
| 529 | |
| 530 | if (in_selection) then |
| 531 | call terminal_write(char(27) // '[7m ' // char(27) // '[0m') |
| 532 | else if (is_current_line) then |
| 533 | call terminal_write(char(27) // '[48;5;236m ' // char(27) // '[0m') |
| 534 | else |
| 535 | call terminal_write(' ') |
| 536 | end if |
| 537 | display_col = display_col + 1 |
| 538 | char_idx = char_idx + 1 |
| 539 | end do |
| 540 | |
| 541 | if (allocated(line)) deallocate(line) |
| 542 | if (allocated(utf8_ch)) deallocate(utf8_ch) |
| 543 | end subroutine render_line_with_selections |
| 544 | |
| 545 | subroutine render_status_bar(editor, buffer, match_mode_active, match_case_sens) |
| 546 | type(editor_state_t), intent(in) :: editor |
| 547 | type(buffer_t), intent(in) :: buffer |
| 548 | logical, intent(in), optional :: match_mode_active |
| 549 | logical, intent(in), optional :: match_case_sens |
| 550 | character(len=256) :: status_left, status_center, status_right, status_bar |
| 551 | integer :: padding_len, left_pad, right_pad |
| 552 | type(cursor_t) :: cursor |
| 553 | logical :: show_match_hint |
| 554 | |
| 555 | cursor = editor%cursors(editor%active_cursor) |
| 556 | show_match_hint = .false. |
| 557 | if (present(match_mode_active)) show_match_hint = match_mode_active |
| 558 | |
| 559 | ! Move to status bar position |
| 560 | call terminal_move_cursor(editor%screen_rows, 1) |
| 561 | |
| 562 | ! Prepare status bar content |
| 563 | if (allocated(editor%filename)) then |
| 564 | write(status_left, '(a,a,a,a)') ' ctrl-b:fuss | ', trim(editor%filename), & |
| 565 | merge(' [modified]', ' ', buffer%modified), ' ' |
| 566 | else |
| 567 | write(status_left, '(a,a,a)') ' ctrl-b:fuss | [No Name]', & |
| 568 | merge(' [modified]', ' ', buffer%modified), ' ' |
| 569 | end if |
| 570 | |
| 571 | ! Add hint in center - show diagnostic, match mode hint, or help |
| 572 | block |
| 573 | type(diagnostic_t), allocatable :: line_diagnostics(:) |
| 574 | character(len=256) :: diag_msg |
| 575 | character(len=:), allocatable :: file_uri |
| 576 | |
| 577 | ! Check for diagnostics at cursor position |
| 578 | if (allocated(editor%filename)) then |
| 579 | file_uri = 'file://' // trim(editor%filename) |
| 580 | line_diagnostics = get_diagnostics_for_line(editor%diagnostics, file_uri, cursor%line) |
| 581 | end if |
| 582 | |
| 583 | if (allocated(line_diagnostics) .and. size(line_diagnostics) > 0) then |
| 584 | ! Show first diagnostic message (highest severity) |
| 585 | diag_msg = line_diagnostics(1)%message |
| 586 | ! Truncate if too long |
| 587 | if (len_trim(diag_msg) > 50) then |
| 588 | status_center = trim(diag_msg(1:47)) // '...' |
| 589 | else |
| 590 | status_center = trim(diag_msg) |
| 591 | end if |
| 592 | else if (show_match_hint .and. present(match_case_sens)) then |
| 593 | if (match_case_sens) then |
| 594 | status_center = '[Cc] alt-c:toggle' |
| 595 | else |
| 596 | status_center = '[cc] alt-c:toggle' |
| 597 | end if |
| 598 | else |
| 599 | status_center = 'ctrl-/:help' |
| 600 | end if |
| 601 | |
| 602 | if (allocated(line_diagnostics)) deallocate(line_diagnostics) |
| 603 | end block |
| 604 | |
| 605 | if (size(editor%cursors) > 1) then |
| 606 | write(status_right, '(a,i0,a,a,i0,a,i0,a)') '[', size(editor%cursors), ' cursors] ', & |
| 607 | 'Ln ', cursor%line, ', Col ', cursor%column, ' ' |
| 608 | else |
| 609 | write(status_right, '(a,i0,a,i0,a)') 'Ln ', cursor%line, ', Col ', cursor%column, ' ' |
| 610 | end if |
| 611 | |
| 612 | ! Create full status bar with center text |
| 613 | padding_len = editor%screen_cols - len_trim(status_left) - len_trim(status_center) - len_trim(status_right) |
| 614 | if (padding_len > 0) then |
| 615 | ! Distribute padding around center text |
| 616 | left_pad = padding_len / 2 |
| 617 | right_pad = padding_len - left_pad |
| 618 | status_bar = trim(status_left) // repeat(' ', left_pad) // & |
| 619 | trim(status_center) // repeat(' ', right_pad) // trim(status_right) |
| 620 | else |
| 621 | ! Not enough space for all three sections |
| 622 | ! If in match mode, prioritize showing the hint by reducing right side info |
| 623 | if (show_match_hint) then |
| 624 | ! Show: left + hint + minimal right (just line/col, no cursor count) |
| 625 | write(status_right, '(a,i0,a,i0,a)') 'Ln ', cursor%line, ',Col ', cursor%column, ' ' |
| 626 | padding_len = editor%screen_cols - len_trim(status_left) - len_trim(status_center) - len_trim(status_right) |
| 627 | if (padding_len > 0) then |
| 628 | left_pad = padding_len / 2 |
| 629 | right_pad = padding_len - left_pad |
| 630 | status_bar = trim(status_left) // repeat(' ', left_pad) // & |
| 631 | trim(status_center) // repeat(' ', right_pad) // trim(status_right) |
| 632 | else |
| 633 | ! Still not enough space, show hint + right only |
| 634 | padding_len = editor%screen_cols - len_trim(status_center) - len_trim(status_right) |
| 635 | if (padding_len > 0) then |
| 636 | status_bar = repeat(' ', padding_len / 2) // trim(status_center) // & |
| 637 | repeat(' ', padding_len - padding_len / 2) // trim(status_right) |
| 638 | else |
| 639 | ! Absolute minimum: just show the hint centered |
| 640 | padding_len = editor%screen_cols - len_trim(status_center) |
| 641 | if (padding_len > 0) then |
| 642 | left_pad = padding_len / 2 |
| 643 | status_bar = repeat(' ', left_pad) // trim(status_center) // & |
| 644 | repeat(' ', padding_len - left_pad) |
| 645 | else |
| 646 | status_bar = status_center(1:editor%screen_cols) |
| 647 | end if |
| 648 | end if |
| 649 | end if |
| 650 | else |
| 651 | ! Normal mode: just show left and right |
| 652 | padding_len = editor%screen_cols - len_trim(status_left) - len_trim(status_right) |
| 653 | if (padding_len > 0) then |
| 654 | status_bar = trim(status_left) // repeat(' ', padding_len) // trim(status_right) |
| 655 | else |
| 656 | status_bar = status_left(1:editor%screen_cols) |
| 657 | end if |
| 658 | end if |
| 659 | end if |
| 660 | |
| 661 | ! Render with inverse video |
| 662 | call terminal_write(char(27) // '[7m') ! Inverse video |
| 663 | call terminal_write(status_bar(1:editor%screen_cols)) |
| 664 | call terminal_write(char(27) // '[0m') ! Reset attributes |
| 665 | end subroutine render_status_bar |
| 666 | |
| 667 | subroutine render_cursor(editor, buffer) |
| 668 | type(editor_state_t), intent(in) :: editor |
| 669 | type(buffer_t), intent(in) :: buffer |
| 670 | type(cursor_t) :: cursor |
| 671 | integer :: screen_row, screen_col |
| 672 | integer :: i |
| 673 | integer :: col_offset, row_offset, min_row |
| 674 | character(len=:), allocatable :: line |
| 675 | character :: cursor_char |
| 676 | |
| 677 | ! Calculate column offset for line numbers |
| 678 | if (show_line_numbers) then |
| 679 | col_offset = LINE_NUMBER_WIDTH + 1 ! +1 for separator space |
| 680 | else |
| 681 | col_offset = 0 |
| 682 | end if |
| 683 | |
| 684 | ! Account for tab bar offset - when tabs exist, row 1 is tab bar, content starts at row 2 |
| 685 | if (size(editor%tabs) > 0) then |
| 686 | row_offset = 2 ! Tab bar takes row 1 |
| 687 | min_row = 2 ! Cursor cannot be in row 1 (tab bar) |
| 688 | else |
| 689 | row_offset = 1 ! No tab bar |
| 690 | min_row = 1 ! Cursor can be in row 1 |
| 691 | end if |
| 692 | |
| 693 | ! For multiple cursors, show them all with block cursor for inactive ones |
| 694 | if (size(editor%cursors) > 1) then |
| 695 | ! First draw all inactive cursors |
| 696 | do i = 1, size(editor%cursors) |
| 697 | if (i /= editor%active_cursor) then |
| 698 | cursor = editor%cursors(i) |
| 699 | |
| 700 | ! Calculate screen position from buffer position |
| 701 | screen_row = cursor%line - editor%viewport_line + row_offset |
| 702 | |
| 703 | ! Calculate screen column based on display width |
| 704 | line = buffer_get_line(buffer, cursor%line) |
| 705 | block |
| 706 | character(len=:), allocatable :: prefix |
| 707 | integer :: byte_pos |
| 708 | byte_pos = utf8_char_to_byte_index(line, cursor%column) |
| 709 | if (byte_pos > 1) then |
| 710 | prefix = line(1:byte_pos-1) |
| 711 | screen_col = utf8_display_width(prefix) - editor%viewport_column + 1 + col_offset |
| 712 | else |
| 713 | screen_col = 1 - editor%viewport_column + col_offset |
| 714 | end if |
| 715 | if (allocated(prefix)) deallocate(prefix) |
| 716 | end block |
| 717 | |
| 718 | ! Ensure cursor is within screen bounds and not in tab bar |
| 719 | if (screen_row >= min_row .and. screen_row < editor%screen_rows .and. & |
| 720 | screen_col >= 1 .and. screen_col <= editor%screen_cols) then |
| 721 | ! Get the character at this cursor position |
| 722 | if (cursor%column <= utf8_char_count(line)) then |
| 723 | cursor_char = utf8_char_at(line, cursor%column) |
| 724 | else |
| 725 | cursor_char = ' ' ! End of line |
| 726 | end if |
| 727 | |
| 728 | ! Inactive cursor - draw character with reverse video |
| 729 | call terminal_move_cursor(screen_row, screen_col) |
| 730 | call terminal_write(char(27) // '[7m' // cursor_char) ! Inverse video |
| 731 | call terminal_write(char(27) // '[0m') ! Reset |
| 732 | end if |
| 733 | end if |
| 734 | end do |
| 735 | |
| 736 | ! Then position terminal cursor at active cursor location |
| 737 | cursor = editor%cursors(editor%active_cursor) |
| 738 | screen_row = cursor%line - editor%viewport_line + row_offset |
| 739 | |
| 740 | ! Calculate screen column based on display width |
| 741 | line = buffer_get_line(buffer, cursor%line) |
| 742 | block |
| 743 | character(len=:), allocatable :: prefix2 |
| 744 | integer :: byte_pos2 |
| 745 | byte_pos2 = utf8_char_to_byte_index(line, cursor%column) |
| 746 | if (byte_pos2 > 1) then |
| 747 | prefix2 = line(1:byte_pos2-1) |
| 748 | screen_col = utf8_display_width(prefix2) - editor%viewport_column + 1 + col_offset |
| 749 | else |
| 750 | screen_col = 1 - editor%viewport_column + col_offset |
| 751 | end if |
| 752 | if (allocated(prefix2)) deallocate(prefix2) |
| 753 | end block |
| 754 | |
| 755 | if (screen_row >= min_row .and. screen_row < editor%screen_rows .and. & |
| 756 | screen_col >= 1 .and. screen_col <= editor%screen_cols) then |
| 757 | call terminal_move_cursor(screen_row, screen_col) |
| 758 | call terminal_show_cursor() |
| 759 | end if |
| 760 | else |
| 761 | ! Single cursor mode |
| 762 | cursor = editor%cursors(editor%active_cursor) |
| 763 | |
| 764 | ! Calculate screen position from buffer position |
| 765 | screen_row = cursor%line - editor%viewport_line + row_offset |
| 766 | screen_col = cursor%column - editor%viewport_column + 1 + col_offset |
| 767 | |
| 768 | ! Ensure cursor is within screen bounds and not in tab bar |
| 769 | if (screen_row >= min_row .and. screen_row < editor%screen_rows .and. & |
| 770 | screen_col >= 1 .and. screen_col <= editor%screen_cols) then |
| 771 | call terminal_move_cursor(screen_row, screen_col) |
| 772 | call terminal_show_cursor() |
| 773 | end if |
| 774 | end if |
| 775 | end subroutine render_cursor |
| 776 | |
| 777 | ! Fast path for cursor-only updates - just update cursor and status bar |
| 778 | ! Use this when only cursor position changed, not buffer content |
| 779 | subroutine render_cursor_only(buffer, editor, match_mode_active, match_case_sens) |
| 780 | type(buffer_t), intent(in) :: buffer |
| 781 | type(editor_state_t), intent(inout) :: editor |
| 782 | logical, intent(in), optional :: match_mode_active |
| 783 | logical, intent(in), optional :: match_case_sens |
| 784 | |
| 785 | ! Just render the status bar and position cursor |
| 786 | call render_status_bar(editor, buffer, match_mode_active, match_case_sens) |
| 787 | |
| 788 | ! Handle panes vs single buffer |
| 789 | if (size(editor%tabs) > 0 .and. editor%active_tab_index > 0 .and. & |
| 790 | editor%active_tab_index <= size(editor%tabs)) then |
| 791 | if (allocated(editor%tabs(editor%active_tab_index)%panes)) then |
| 792 | if (editor%fuss_mode_active) then |
| 793 | call render_cursor_for_panes_with_tree(editor, 31, editor%screen_cols - 30) |
| 794 | else |
| 795 | call render_cursor_for_panes(editor) |
| 796 | end if |
| 797 | return |
| 798 | end if |
| 799 | end if |
| 800 | |
| 801 | ! Single buffer mode |
| 802 | if (editor%fuss_mode_active) then |
| 803 | call render_cursor_in_pane(editor, 31, editor%screen_cols - 30) |
| 804 | else |
| 805 | call render_cursor(editor, buffer) |
| 806 | end if |
| 807 | end subroutine render_cursor_only |
| 808 | |
| 809 | subroutine update_viewport(editor) |
| 810 | use editor_state_module, only: pane_t |
| 811 | type(editor_state_t), intent(inout) :: editor |
| 812 | type(cursor_t) :: cursor |
| 813 | integer :: margin = 3 ! Lines to keep visible above/below cursor |
| 814 | integer :: tab_idx, pane_idx |
| 815 | integer :: pane_height, pane_width |
| 816 | integer :: screen_width, screen_height |
| 817 | |
| 818 | ! If we have panes, update the active pane's viewport |
| 819 | if (size(editor%tabs) > 0 .and. editor%active_tab_index > 0) then |
| 820 | tab_idx = editor%active_tab_index |
| 821 | if (allocated(editor%tabs(tab_idx)%panes)) then |
| 822 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 823 | if (pane_idx > 0 .and. pane_idx <= size(editor%tabs(tab_idx)%panes)) then |
| 824 | |
| 825 | if (allocated(editor%tabs(tab_idx)%panes(pane_idx)%cursors) .and. & |
| 826 | editor%tabs(tab_idx)%panes(pane_idx)%active_cursor > 0) then |
| 827 | cursor = editor%tabs(tab_idx)%panes(pane_idx)%cursors(& |
| 828 | editor%tabs(tab_idx)%panes(pane_idx)%active_cursor) |
| 829 | |
| 830 | ! Calculate pane dimensions (account for fuss mode) |
| 831 | if (editor%fuss_mode_active) then |
| 832 | ! Fuss mode: editor takes ~70% of screen |
| 833 | screen_width = editor%screen_cols * 70 / 100 |
| 834 | else |
| 835 | screen_width = editor%screen_cols |
| 836 | end if |
| 837 | screen_height = editor%screen_rows - 2 |
| 838 | pane_height = int((editor%tabs(tab_idx)%panes(pane_idx)%y_end - & |
| 839 | editor%tabs(tab_idx)%panes(pane_idx)%y_start) * real(screen_height)) |
| 840 | pane_width = int((editor%tabs(tab_idx)%panes(pane_idx)%x_end - & |
| 841 | editor%tabs(tab_idx)%panes(pane_idx)%x_start) * real(screen_width)) |
| 842 | |
| 843 | ! Account for line numbers in pane width |
| 844 | if (show_line_numbers) then |
| 845 | pane_width = pane_width - LINE_NUMBER_WIDTH - 1 |
| 846 | end if |
| 847 | |
| 848 | ! Vertical scrolling for pane |
| 849 | if (cursor%line < editor%tabs(tab_idx)%panes(pane_idx)%viewport_line + margin) then |
| 850 | editor%tabs(tab_idx)%panes(pane_idx)%viewport_line = max(1, cursor%line - margin) |
| 851 | else if (cursor%line > editor%tabs(tab_idx)%panes(pane_idx)%viewport_line + pane_height - margin - 1) then |
| 852 | editor%tabs(tab_idx)%panes(pane_idx)%viewport_line = cursor%line - pane_height + margin + 1 |
| 853 | end if |
| 854 | |
| 855 | ! Horizontal scrolling for pane |
| 856 | if (cursor%column < editor%tabs(tab_idx)%panes(pane_idx)%viewport_column + margin) then |
| 857 | editor%tabs(tab_idx)%panes(pane_idx)%viewport_column = max(1, cursor%column - margin) |
| 858 | else if (cursor%column > editor%tabs(tab_idx)%panes(pane_idx)%viewport_column + pane_width - margin) then |
| 859 | editor%tabs(tab_idx)%panes(pane_idx)%viewport_column = cursor%column - pane_width + margin |
| 860 | end if |
| 861 | |
| 862 | ! Also update legacy editor viewport for compatibility |
| 863 | editor%viewport_line = editor%tabs(tab_idx)%panes(pane_idx)%viewport_line |
| 864 | editor%viewport_column = editor%tabs(tab_idx)%panes(pane_idx)%viewport_column |
| 865 | end if |
| 866 | return |
| 867 | end if |
| 868 | end if |
| 869 | end if |
| 870 | |
| 871 | ! Fallback to original behavior if no panes |
| 872 | cursor = editor%cursors(editor%active_cursor) |
| 873 | |
| 874 | ! Vertical scrolling |
| 875 | if (cursor%line < editor%viewport_line + margin) then |
| 876 | editor%viewport_line = max(1, cursor%line - margin) |
| 877 | else if (cursor%line > editor%viewport_line + editor%screen_rows - margin - 2) then |
| 878 | ! -2 for status bar and margin |
| 879 | editor%viewport_line = cursor%line - editor%screen_rows + margin + 2 |
| 880 | end if |
| 881 | |
| 882 | ! Horizontal scrolling (account for fuss mode and line numbers) |
| 883 | if (editor%fuss_mode_active) then |
| 884 | screen_width = editor%screen_cols * 70 / 100 |
| 885 | else |
| 886 | screen_width = editor%screen_cols |
| 887 | end if |
| 888 | |
| 889 | ! Account for line numbers |
| 890 | if (show_line_numbers) then |
| 891 | screen_width = screen_width - LINE_NUMBER_WIDTH - 1 |
| 892 | end if |
| 893 | |
| 894 | if (cursor%column < editor%viewport_column + margin) then |
| 895 | editor%viewport_column = max(1, cursor%column - margin) |
| 896 | else if (cursor%column > editor%viewport_column + screen_width - margin) then |
| 897 | editor%viewport_column = cursor%column - screen_width + margin |
| 898 | end if |
| 899 | end subroutine update_viewport |
| 900 | |
| 901 | ! Render screen with split panes (tree on left, editor on right) |
| 902 | subroutine render_screen_with_tree(buffer, editor, match_mode_active, match_case_sens) |
| 903 | type(buffer_t), intent(in) :: buffer |
| 904 | type(editor_state_t), intent(inout) :: editor |
| 905 | logical, intent(in), optional :: match_mode_active |
| 906 | logical, intent(in), optional :: match_case_sens |
| 907 | integer :: tree_width, editor_start_col, editor_width |
| 908 | integer :: separator_col |
| 909 | integer :: row |
| 910 | |
| 911 | call terminal_hide_cursor() |
| 912 | |
| 913 | ! Clear screen first to avoid artifacts |
| 914 | do row = 1, editor%screen_rows |
| 915 | call terminal_move_cursor(row, 1) |
| 916 | call terminal_write(repeat(' ', editor%screen_cols)) |
| 917 | end do |
| 918 | |
| 919 | ! Calculate split: 30% for tree, 70% for editor |
| 920 | tree_width = editor%screen_cols * 30 / 100 |
| 921 | separator_col = tree_width + 1 |
| 922 | editor_start_col = tree_width + 2 |
| 923 | editor_width = editor%screen_cols - editor_start_col + 1 |
| 924 | |
| 925 | ! Render tab bar if there are any tabs (positioned in editor pane area) |
| 926 | call render_tab_bar(editor, editor_start_col, editor_width) |
| 927 | |
| 928 | ! Render file tree in left pane (start at row 2 for tab bar) |
| 929 | call render_file_tree(tree_state, 2, editor%screen_rows - 1, 2, tree_width - 2, editor%fuss_hints_expanded) |
| 930 | |
| 931 | ! Render vertical separator (start at row 2 for tab bar) |
| 932 | call render_vertical_separator(separator_col, 2, editor%screen_rows - 1) |
| 933 | |
| 934 | ! Render editor in right pane (check for multiple panes) |
| 935 | call render_editor_area_with_tree(editor, editor_start_col, editor_width) |
| 936 | |
| 937 | ! Render status bar (full width) |
| 938 | call render_status_bar(editor, buffer, match_mode_active, match_case_sens) |
| 939 | |
| 940 | ! Render diagnostics panel if visible |
| 941 | if (allocated(editor%filename)) then |
| 942 | block |
| 943 | character(len=:), allocatable :: file_uri |
| 944 | file_uri = 'file://' // trim(editor%filename) |
| 945 | call render_diagnostics_panel(editor%diagnostics_panel, editor%diagnostics, & |
| 946 | file_uri, editor%screen_rows, editor%screen_cols) |
| 947 | end block |
| 948 | end if |
| 949 | |
| 950 | ! Render references panel if visible |
| 951 | call render_references_panel(editor%references_panel, 3) |
| 952 | |
| 953 | ! Render code actions menu if visible |
| 954 | call render_code_actions_panel(editor%code_actions_panel, editor%screen_rows, editor%screen_cols) |
| 955 | |
| 956 | ! Render symbols panel if visible |
| 957 | call render_symbols_panel(editor%symbols_panel, editor%screen_rows) |
| 958 | |
| 959 | ! Render LSP server installer panel if visible |
| 960 | if (is_lsp_server_installer_panel_visible(editor%lsp_installer_panel)) then |
| 961 | call render_lsp_server_installer_panel(editor%lsp_installer_panel, & |
| 962 | editor%screen_cols) |
| 963 | end if |
| 964 | |
| 965 | ! Position cursor in editor pane (use appropriate method based on pane count) |
| 966 | if (size(editor%tabs(editor%active_tab_index)%panes) > 1) then |
| 967 | ! Multiple panes: use pane-aware cursor rendering with tree offset |
| 968 | call render_cursor_for_panes_with_tree(editor, editor_start_col, editor_width) |
| 969 | else |
| 970 | ! Single pane: use simple cursor rendering |
| 971 | call render_cursor_in_pane(editor, editor_start_col, editor_width) |
| 972 | end if |
| 973 | |
| 974 | call terminal_show_cursor() |
| 975 | end subroutine render_screen_with_tree |
| 976 | |
| 977 | subroutine render_vertical_separator(col, start_row, end_row) |
| 978 | integer, intent(in) :: col, start_row, end_row |
| 979 | integer :: row |
| 980 | |
| 981 | do row = start_row, end_row |
| 982 | call terminal_move_cursor(row, col) |
| 983 | call terminal_write(char(27) // '[90m│' // char(27) // '[0m') ! Gray vertical line |
| 984 | end do |
| 985 | end subroutine render_vertical_separator |
| 986 | |
| 987 | subroutine render_editor_area_with_tree(editor, start_col, width) |
| 988 | use editor_state_module, only: pane_t |
| 989 | type(editor_state_t), intent(inout) :: editor |
| 990 | integer, intent(in) :: start_col, width |
| 991 | type(pane_t) :: pane |
| 992 | integer :: i, tab_idx, n_panes |
| 993 | integer :: pane_col, pane_row, pane_width, pane_height |
| 994 | integer :: screen_height |
| 995 | |
| 996 | ! Get active tab |
| 997 | tab_idx = editor%active_tab_index |
| 998 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) then |
| 999 | ! No valid tab, render empty |
| 1000 | return |
| 1001 | end if |
| 1002 | |
| 1003 | if (.not. allocated(editor%tabs(tab_idx)%panes)) then |
| 1004 | ! No panes, render empty |
| 1005 | return |
| 1006 | end if |
| 1007 | |
| 1008 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 1009 | if (n_panes == 0) return |
| 1010 | |
| 1011 | screen_height = editor%screen_rows - 2 ! Account for tab bar and status bar |
| 1012 | |
| 1013 | ! If only one pane, use simple rendering |
| 1014 | if (n_panes == 1) then |
| 1015 | ! Use the pane's buffer, not the passed buffer parameter |
| 1016 | call render_editor_pane(editor%tabs(tab_idx)%panes(1)%buffer, editor, start_col, width) |
| 1017 | return |
| 1018 | end if |
| 1019 | |
| 1020 | ! Multiple panes: render each with adjusted coordinates for tree view |
| 1021 | ! Clear the editor area first |
| 1022 | do i = 2, editor%screen_rows - 1 |
| 1023 | call terminal_move_cursor(i, start_col) |
| 1024 | call terminal_write(repeat(' ', width)) |
| 1025 | end do |
| 1026 | |
| 1027 | ! Render each pane with coordinates adjusted for tree offset |
| 1028 | do i = 1, n_panes |
| 1029 | pane = editor%tabs(tab_idx)%panes(i) |
| 1030 | |
| 1031 | ! Calculate pane position relative to editor area (not full screen) |
| 1032 | pane_col = start_col + int(pane%x_start * real(width)) |
| 1033 | if (i < n_panes) then |
| 1034 | pane_width = int((pane%x_end - pane%x_start) * real(width)) - 1 |
| 1035 | else |
| 1036 | pane_width = int((pane%x_end - pane%x_start) * real(width)) |
| 1037 | end if |
| 1038 | pane_row = 2 + int(pane%y_start * real(screen_height)) |
| 1039 | pane_height = int((pane%y_end - pane%y_start) * real(screen_height)) |
| 1040 | |
| 1041 | ! Store the calculated screen coordinates in the pane |
| 1042 | editor%tabs(tab_idx)%panes(i)%screen_col = pane_col |
| 1043 | editor%tabs(tab_idx)%panes(i)%screen_row = pane_row |
| 1044 | editor%tabs(tab_idx)%panes(i)%screen_width = pane_width |
| 1045 | editor%tabs(tab_idx)%panes(i)%screen_height = pane_height |
| 1046 | |
| 1047 | ! Render the pane content |
| 1048 | call render_single_pane(editor, i, pane_col, pane_row, pane_width, pane_height) |
| 1049 | |
| 1050 | ! Draw vertical separator between panes |
| 1051 | if (i < n_panes) then |
| 1052 | call render_pane_separator(pane_col + pane_width, pane_row, pane_height) |
| 1053 | end if |
| 1054 | end do |
| 1055 | end subroutine render_editor_area_with_tree |
| 1056 | |
| 1057 | subroutine render_editor_pane(buffer, editor, start_col, width) |
| 1058 | type(buffer_t), intent(in) :: buffer |
| 1059 | type(editor_state_t), intent(in) :: editor |
| 1060 | integer, intent(in) :: start_col, width |
| 1061 | integer :: screen_row, buffer_line, line_count |
| 1062 | integer :: adjusted_width, line_num_width |
| 1063 | integer :: start_row |
| 1064 | character(len=16) :: line_num_str |
| 1065 | character(len=:), allocatable :: padding |
| 1066 | |
| 1067 | line_count = buffer_get_line_count(buffer) |
| 1068 | |
| 1069 | ! Calculate content width (accounting for line numbers if enabled) |
| 1070 | if (show_line_numbers) then |
| 1071 | line_num_width = LINE_NUMBER_WIDTH + 1 |
| 1072 | adjusted_width = width - line_num_width |
| 1073 | else |
| 1074 | line_num_width = 0 |
| 1075 | adjusted_width = width |
| 1076 | end if |
| 1077 | |
| 1078 | ! Determine starting row (account for tab bar) |
| 1079 | if (size(editor%tabs) > 0) then |
| 1080 | start_row = 2 ! Tab bar at row 1 |
| 1081 | else |
| 1082 | start_row = 1 ! No tab bar |
| 1083 | end if |
| 1084 | |
| 1085 | ! Render each visible line in the editor pane |
| 1086 | do screen_row = start_row, editor%screen_rows - 1 |
| 1087 | buffer_line = editor%viewport_line + screen_row - start_row |
| 1088 | |
| 1089 | ! Position cursor at start of this line in the pane |
| 1090 | call terminal_move_cursor(screen_row, start_col) |
| 1091 | |
| 1092 | ! Render line number if enabled |
| 1093 | if (show_line_numbers) then |
| 1094 | if (buffer_line <= line_count) then |
| 1095 | write(line_num_str, '(i5)') buffer_line |
| 1096 | if (buffer_line == editor%cursors(editor%active_cursor)%line) then |
| 1097 | call terminal_write(char(27) // '[1;33m' // adjustl(line_num_str(1:LINE_NUMBER_WIDTH)) & |
| 1098 | // char(27) // '[0m ') |
| 1099 | else |
| 1100 | call terminal_write(char(27) // '[90m' // adjustl(line_num_str(1:LINE_NUMBER_WIDTH)) & |
| 1101 | // char(27) // '[0m ') |
| 1102 | end if |
| 1103 | else |
| 1104 | call terminal_write(repeat(' ', line_num_width)) |
| 1105 | end if |
| 1106 | end if |
| 1107 | |
| 1108 | ! Render content (render_line_with_selections will write exactly adjusted_width chars) |
| 1109 | if (buffer_line <= line_count) then |
| 1110 | call render_line_with_selections(buffer, editor, buffer_line, & |
| 1111 | editor%viewport_column, adjusted_width) |
| 1112 | else |
| 1113 | ! Empty line beyond file content |
| 1114 | padding = '~' // repeat(' ', adjusted_width - 1) |
| 1115 | call terminal_write(padding) |
| 1116 | end if |
| 1117 | end do |
| 1118 | end subroutine render_editor_pane |
| 1119 | |
| 1120 | subroutine render_all_panes(editor) |
| 1121 | use editor_state_module, only: pane_t |
| 1122 | type(editor_state_t), intent(inout) :: editor |
| 1123 | type(pane_t) :: pane |
| 1124 | integer :: i, tab_idx, n_panes, active_pane_idx |
| 1125 | integer :: pane_col, pane_row, pane_width, pane_height |
| 1126 | integer :: screen_width, screen_height |
| 1127 | character(len=:), allocatable :: line_content |
| 1128 | character(len=1) :: cursor_char |
| 1129 | logical :: found_match |
| 1130 | type(cursor_t) :: active_cursor |
| 1131 | |
| 1132 | ! Get active tab |
| 1133 | tab_idx = editor%active_tab_index |
| 1134 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1135 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1136 | |
| 1137 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 1138 | if (n_panes == 0) return |
| 1139 | |
| 1140 | active_pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 1141 | |
| 1142 | ! Calculate bracket matching for the active pane's cursor |
| 1143 | bracket_line = 0 |
| 1144 | bracket_col = 0 |
| 1145 | matching_bracket_line = 0 |
| 1146 | matching_bracket_col = 0 |
| 1147 | |
| 1148 | if (active_pane_idx > 0 .and. active_pane_idx <= n_panes) then |
| 1149 | pane = editor%tabs(tab_idx)%panes(active_pane_idx) |
| 1150 | if (allocated(pane%cursors) .and. size(pane%cursors) > 0) then |
| 1151 | active_cursor = pane%cursors(1) ! Use first cursor for bracket matching |
| 1152 | line_content = buffer_get_line(pane%buffer, active_cursor%line) |
| 1153 | if (active_cursor%column >= 1 .and. active_cursor%column <= len(line_content)) then |
| 1154 | cursor_char = line_content(active_cursor%column:active_cursor%column) |
| 1155 | if (is_opening_bracket(cursor_char) .or. is_closing_bracket(cursor_char)) then |
| 1156 | bracket_line = active_cursor%line |
| 1157 | bracket_col = active_cursor%column |
| 1158 | call find_matching_bracket(pane%buffer, bracket_line, bracket_col, & |
| 1159 | found_match, matching_bracket_line, matching_bracket_col) |
| 1160 | if (.not. found_match) then |
| 1161 | matching_bracket_line = 0 |
| 1162 | matching_bracket_col = 0 |
| 1163 | end if |
| 1164 | end if |
| 1165 | end if |
| 1166 | if (allocated(line_content)) deallocate(line_content) |
| 1167 | end if |
| 1168 | end if |
| 1169 | |
| 1170 | ! Get screen dimensions |
| 1171 | screen_width = editor%screen_cols |
| 1172 | screen_height = editor%screen_rows - 2 ! Account for tab bar (row 1) and status bar (last row) |
| 1173 | |
| 1174 | ! Reduce width if diagnostics panel is visible |
| 1175 | if (editor%diagnostics_panel%visible) then |
| 1176 | screen_width = screen_width - editor%diagnostics_panel%width |
| 1177 | end if |
| 1178 | |
| 1179 | ! Reduce width if references panel is visible |
| 1180 | if (editor%references_panel%visible) then |
| 1181 | screen_width = screen_width - editor%references_panel%width |
| 1182 | end if |
| 1183 | |
| 1184 | ! If only one pane, render full screen |
| 1185 | if (n_panes == 1) then |
| 1186 | ! Set screen coordinates for the single pane |
| 1187 | editor%tabs(tab_idx)%panes(1)%screen_col = 1 |
| 1188 | editor%tabs(tab_idx)%panes(1)%screen_row = 2 ! After tab bar |
| 1189 | editor%tabs(tab_idx)%panes(1)%screen_width = screen_width |
| 1190 | editor%tabs(tab_idx)%panes(1)%screen_height = screen_height |
| 1191 | |
| 1192 | ! Use the pane's buffer, not the passed buffer parameter |
| 1193 | call render_editor_pane(editor%tabs(tab_idx)%panes(1)%buffer, editor, 1, screen_width) |
| 1194 | return |
| 1195 | end if |
| 1196 | |
| 1197 | ! Clear the editor area first with background |
| 1198 | do i = 2, editor%screen_rows - 1 |
| 1199 | call terminal_move_cursor(i, 1) |
| 1200 | call terminal_write(repeat(' ', screen_width)) |
| 1201 | end do |
| 1202 | |
| 1203 | ! Render each pane with gaps |
| 1204 | do i = 1, n_panes |
| 1205 | pane = editor%tabs(tab_idx)%panes(i) |
| 1206 | |
| 1207 | ! Calculate actual screen coordinates with gap consideration |
| 1208 | ! Add 1 column gap on right side of each pane except the last |
| 1209 | pane_col = 1 + int(pane%x_start * real(screen_width)) |
| 1210 | if (i < n_panes) then |
| 1211 | ! Reserve 1 column for the border/gap |
| 1212 | pane_width = int((pane%x_end - pane%x_start) * real(screen_width)) - 1 |
| 1213 | else |
| 1214 | ! Last pane uses full width |
| 1215 | pane_width = int((pane%x_end - pane%x_start) * real(screen_width)) |
| 1216 | end if |
| 1217 | pane_row = 2 + int(pane%y_start * real(screen_height)) |
| 1218 | pane_height = int((pane%y_end - pane%y_start) * real(screen_height)) |
| 1219 | |
| 1220 | ! Store the calculated screen coordinates in the pane |
| 1221 | editor%tabs(tab_idx)%panes(i)%screen_col = pane_col |
| 1222 | editor%tabs(tab_idx)%panes(i)%screen_row = pane_row |
| 1223 | editor%tabs(tab_idx)%panes(i)%screen_width = pane_width |
| 1224 | editor%tabs(tab_idx)%panes(i)%screen_height = pane_height |
| 1225 | |
| 1226 | ! Render the pane content |
| 1227 | call render_single_pane(editor, i, pane_col, pane_row, pane_width, pane_height) |
| 1228 | |
| 1229 | ! Draw vertical separator between panes |
| 1230 | if (i < n_panes) then |
| 1231 | call render_pane_separator(pane_col + pane_width, pane_row, pane_height) |
| 1232 | end if |
| 1233 | end do |
| 1234 | end subroutine render_all_panes |
| 1235 | |
| 1236 | subroutine render_single_pane(editor, pane_idx, col, row, width, height) |
| 1237 | use editor_state_module, only: pane_t |
| 1238 | type(editor_state_t), intent(in) :: editor |
| 1239 | integer, intent(in) :: pane_idx, col, row, width, height |
| 1240 | type(pane_t) :: pane |
| 1241 | integer :: screen_row, buffer_line, content_start_row, content_height |
| 1242 | integer :: tab_idx |
| 1243 | |
| 1244 | tab_idx = editor%active_tab_index |
| 1245 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1246 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1247 | |
| 1248 | pane = editor%tabs(tab_idx)%panes(pane_idx) |
| 1249 | |
| 1250 | ! Draw pane header with filename (if more than one pane exists) |
| 1251 | if (size(editor%tabs(tab_idx)%panes) > 1) then |
| 1252 | call render_pane_header(pane, col, row, width) |
| 1253 | content_start_row = row + 1 |
| 1254 | content_height = height - 1 |
| 1255 | else |
| 1256 | content_start_row = row |
| 1257 | content_height = height |
| 1258 | end if |
| 1259 | |
| 1260 | ! Clear the pane area with subtle background for inactive panes |
| 1261 | do screen_row = content_start_row, content_start_row + content_height - 1 |
| 1262 | call terminal_move_cursor(screen_row, col) |
| 1263 | if (.not. pane%is_active) then |
| 1264 | ! Subtle dark background for inactive panes |
| 1265 | call terminal_write(char(27) // '[48;5;234m') ! Very dark gray |
| 1266 | end if |
| 1267 | call terminal_write(repeat(' ', width)) |
| 1268 | call terminal_write(char(27) // '[0m') |
| 1269 | end do |
| 1270 | |
| 1271 | ! Render buffer content with pane's viewport (use pane's own buffer) |
| 1272 | do screen_row = content_start_row, content_start_row + content_height - 1 |
| 1273 | buffer_line = pane%viewport_line + (screen_row - content_start_row) |
| 1274 | if (buffer_line > 0 .and. buffer_line <= buffer_get_line_count(pane%buffer)) then |
| 1275 | call render_buffer_line_in_pane(pane%buffer, editor, pane_idx, buffer_line, & |
| 1276 | screen_row, col, width) |
| 1277 | else |
| 1278 | ! Render empty line indicator for lines beyond file |
| 1279 | call terminal_move_cursor(screen_row, col) |
| 1280 | |
| 1281 | ! Render empty line number area if line numbers are enabled |
| 1282 | if (show_line_numbers) then |
| 1283 | if (.not. pane%is_active) then |
| 1284 | call terminal_write(char(27) // '[48;5;234m') ! Dark gray for inactive |
| 1285 | end if |
| 1286 | call terminal_write(repeat(' ', LINE_NUMBER_WIDTH + 1)) |
| 1287 | end if |
| 1288 | |
| 1289 | ! Render the ~ indicator |
| 1290 | if (.not. pane%is_active) then |
| 1291 | call terminal_write(char(27) // '[48;5;234m') ! Dark gray for inactive |
| 1292 | end if |
| 1293 | call terminal_write('~') |
| 1294 | |
| 1295 | ! Calculate remaining width accounting for line numbers |
| 1296 | if (show_line_numbers) then |
| 1297 | if (width > LINE_NUMBER_WIDTH + 2) then |
| 1298 | call terminal_write(repeat(' ', width - LINE_NUMBER_WIDTH - 2)) |
| 1299 | end if |
| 1300 | else |
| 1301 | if (width > 1) then |
| 1302 | call terminal_write(repeat(' ', width - 1)) |
| 1303 | end if |
| 1304 | end if |
| 1305 | call terminal_write(char(27) // '[0m') |
| 1306 | end if |
| 1307 | end do |
| 1308 | end subroutine render_single_pane |
| 1309 | |
| 1310 | subroutine render_pane_header(pane, col, row, width) |
| 1311 | use editor_state_module, only: pane_t |
| 1312 | type(pane_t), intent(in) :: pane |
| 1313 | integer, intent(in) :: col, row, width |
| 1314 | character(len=:), allocatable :: filename_display, filename_only |
| 1315 | character(len=256) :: temp_display |
| 1316 | integer :: slash_pos, display_len, padding_left, padding_right |
| 1317 | |
| 1318 | ! Move to header position |
| 1319 | call terminal_move_cursor(row, col) |
| 1320 | |
| 1321 | ! Extract filename from path |
| 1322 | if (allocated(pane%filename)) then |
| 1323 | ! Find last slash to get just the filename |
| 1324 | slash_pos = index(pane%filename, '/', back=.true.) |
| 1325 | if (slash_pos > 0) then |
| 1326 | filename_only = pane%filename(slash_pos+1:) |
| 1327 | else |
| 1328 | filename_only = pane%filename |
| 1329 | end if |
| 1330 | |
| 1331 | ! Build display string with brackets |
| 1332 | write(temp_display, '(A,A,A)') ' [', trim(filename_only), '] ' |
| 1333 | filename_display = trim(temp_display) |
| 1334 | else |
| 1335 | filename_display = ' [untitled] ' |
| 1336 | end if |
| 1337 | |
| 1338 | ! Calculate padding |
| 1339 | display_len = len(filename_display) |
| 1340 | if (display_len < width) then |
| 1341 | padding_left = (width - display_len) / 2 |
| 1342 | padding_right = width - display_len - padding_left |
| 1343 | else |
| 1344 | ! Truncate if too long |
| 1345 | filename_display = filename_display(1:width) |
| 1346 | padding_left = 0 |
| 1347 | padding_right = 0 |
| 1348 | end if |
| 1349 | |
| 1350 | ! Draw header with reverse video (like tab bar) |
| 1351 | if (pane%is_active) then |
| 1352 | ! Active pane: bright reverse video |
| 1353 | call terminal_write(char(27) // '[7m') ! Reverse video |
| 1354 | else |
| 1355 | ! Inactive pane: dimmed reverse video |
| 1356 | call terminal_write(char(27) // '[2;7m') ! Dim + reverse video |
| 1357 | end if |
| 1358 | |
| 1359 | ! Draw the header line |
| 1360 | call terminal_write(repeat('─', padding_left)) |
| 1361 | call terminal_write(filename_display) |
| 1362 | call terminal_write(repeat('─', padding_right)) |
| 1363 | |
| 1364 | ! Reset attributes |
| 1365 | call terminal_write(char(27) // '[0m') |
| 1366 | end subroutine render_pane_header |
| 1367 | |
| 1368 | subroutine render_buffer_line_in_pane(buffer, editor, pane_idx, line_num, screen_row, col, width) |
| 1369 | use editor_state_module, only: pane_t |
| 1370 | type(buffer_t), intent(in) :: buffer |
| 1371 | type(editor_state_t), intent(in) :: editor |
| 1372 | integer, intent(in) :: pane_idx, line_num, screen_row, col, width |
| 1373 | character(len=:), allocatable :: line, utf8_ch |
| 1374 | type(pane_t) :: pane |
| 1375 | integer :: tab_idx, i, char_idx, char_count, display_col, char_width |
| 1376 | integer :: content_width, content_col |
| 1377 | character(len=5) :: line_num_str |
| 1378 | logical :: is_current_line, in_selection, is_bracket_match |
| 1379 | integer :: sel_start_line, sel_start_col, sel_end_line, sel_end_col |
| 1380 | |
| 1381 | tab_idx = editor%active_tab_index |
| 1382 | pane = editor%tabs(tab_idx)%panes(pane_idx) |
| 1383 | |
| 1384 | ! Move to position |
| 1385 | call terminal_move_cursor(screen_row, col) |
| 1386 | |
| 1387 | ! Render line number if enabled |
| 1388 | if (show_line_numbers) then |
| 1389 | write(line_num_str, '(i5)') line_num |
| 1390 | ! Check if this line has any cursor |
| 1391 | is_current_line = .false. |
| 1392 | if (allocated(pane%cursors)) then |
| 1393 | do i = 1, size(pane%cursors) |
| 1394 | if (pane%cursors(i)%line == line_num) then |
| 1395 | is_current_line = .true. |
| 1396 | exit |
| 1397 | end if |
| 1398 | end do |
| 1399 | end if |
| 1400 | |
| 1401 | ! Apply pane background for inactive panes |
| 1402 | if (.not. pane%is_active) then |
| 1403 | call terminal_write(char(27) // '[48;5;234m') ! Dark gray background |
| 1404 | end if |
| 1405 | |
| 1406 | if (is_current_line .and. pane%is_active) then |
| 1407 | call terminal_write(char(27) // '[1;33m' // adjustl(line_num_str(1:LINE_NUMBER_WIDTH)) & |
| 1408 | // char(27) // '[0m ') |
| 1409 | else |
| 1410 | call terminal_write(char(27) // '[90m' // adjustl(line_num_str(1:LINE_NUMBER_WIDTH)) & |
| 1411 | // char(27) // '[0m ') |
| 1412 | end if |
| 1413 | |
| 1414 | ! Continue with pane background for content |
| 1415 | if (.not. pane%is_active) then |
| 1416 | call terminal_write(char(27) // '[48;5;234m') ! Dark gray background |
| 1417 | end if |
| 1418 | |
| 1419 | content_width = width - LINE_NUMBER_WIDTH - 1 |
| 1420 | content_col = col + LINE_NUMBER_WIDTH + 1 |
| 1421 | else |
| 1422 | content_width = width |
| 1423 | content_col = col |
| 1424 | end if |
| 1425 | |
| 1426 | ! Get the line content |
| 1427 | line = buffer_get_line(buffer, line_num) |
| 1428 | if (.not. allocated(line)) return |
| 1429 | |
| 1430 | ! Get character count for UTF-8 iteration |
| 1431 | char_count = utf8_char_count(line) |
| 1432 | |
| 1433 | ! Check if this is the current line with a cursor |
| 1434 | is_current_line = .false. |
| 1435 | if (allocated(pane%cursors)) then |
| 1436 | do i = 1, size(pane%cursors) |
| 1437 | if (pane%cursors(i)%line == line_num) then |
| 1438 | is_current_line = .true. |
| 1439 | exit |
| 1440 | end if |
| 1441 | end do |
| 1442 | end if |
| 1443 | |
| 1444 | ! Render the line character by character with selection highlighting |
| 1445 | ! Using UTF-8 aware iteration |
| 1446 | display_col = 0 |
| 1447 | char_idx = pane%viewport_column ! Start from viewport column (character index) |
| 1448 | |
| 1449 | do while (char_idx <= char_count .and. display_col < content_width) |
| 1450 | in_selection = .false. |
| 1451 | |
| 1452 | ! Get the UTF-8 character at this position |
| 1453 | utf8_ch = utf8_char_at(line, char_idx) |
| 1454 | char_width = utf8_display_width(utf8_ch) |
| 1455 | |
| 1456 | ! Check if this position is in any cursor's selection (use pane's cursors) |
| 1457 | if (allocated(pane%cursors)) then |
| 1458 | do i = 1, size(pane%cursors) |
| 1459 | if (pane%cursors(i)%has_selection) then |
| 1460 | ! Determine selection bounds (handle both directions) |
| 1461 | if (pane%cursors(i)%line < pane%cursors(i)%selection_start_line .or. & |
| 1462 | (pane%cursors(i)%line == pane%cursors(i)%selection_start_line .and. & |
| 1463 | pane%cursors(i)%column < pane%cursors(i)%selection_start_col)) then |
| 1464 | ! Cursor is before selection start (selecting upward) |
| 1465 | sel_start_line = pane%cursors(i)%line |
| 1466 | sel_start_col = pane%cursors(i)%column |
| 1467 | sel_end_line = pane%cursors(i)%selection_start_line |
| 1468 | sel_end_col = pane%cursors(i)%selection_start_col |
| 1469 | else |
| 1470 | ! Cursor is after selection start (selecting downward) |
| 1471 | sel_start_line = pane%cursors(i)%selection_start_line |
| 1472 | sel_start_col = pane%cursors(i)%selection_start_col |
| 1473 | sel_end_line = pane%cursors(i)%line |
| 1474 | sel_end_col = pane%cursors(i)%column |
| 1475 | end if |
| 1476 | |
| 1477 | ! Check if this position is selected (using char_idx) |
| 1478 | if (line_num > sel_start_line .and. line_num < sel_end_line) then |
| 1479 | ! Fully selected line (between start and end) |
| 1480 | in_selection = .true. |
| 1481 | exit |
| 1482 | else if (line_num == sel_start_line .and. line_num == sel_end_line) then |
| 1483 | ! Single-line selection |
| 1484 | if (char_idx >= sel_start_col .and. char_idx < sel_end_col) then |
| 1485 | in_selection = .true. |
| 1486 | exit |
| 1487 | end if |
| 1488 | else if (line_num == sel_start_line .and. line_num < sel_end_line) then |
| 1489 | ! First line of multi-line selection |
| 1490 | if (char_idx >= sel_start_col) then |
| 1491 | in_selection = .true. |
| 1492 | exit |
| 1493 | end if |
| 1494 | else if (line_num == sel_end_line .and. line_num > sel_start_line) then |
| 1495 | ! Last line of multi-line selection |
| 1496 | if (char_idx < sel_end_col) then |
| 1497 | in_selection = .true. |
| 1498 | exit |
| 1499 | end if |
| 1500 | end if |
| 1501 | end if |
| 1502 | end do |
| 1503 | end if |
| 1504 | |
| 1505 | ! Check if this position is a bracket or its match (only for active pane) |
| 1506 | is_bracket_match = .false. |
| 1507 | if (pane%is_active) then |
| 1508 | if ((line_num == bracket_line .and. char_idx == bracket_col) .or. & |
| 1509 | (line_num == matching_bracket_line .and. char_idx == matching_bracket_col)) then |
| 1510 | is_bracket_match = .true. |
| 1511 | end if |
| 1512 | end if |
| 1513 | |
| 1514 | ! Render the character with appropriate highlighting |
| 1515 | if (in_selection) then |
| 1516 | ! Highlight selected text with reverse video |
| 1517 | call terminal_write(char(27) // '[7m' // utf8_ch // char(27) // '[0m') |
| 1518 | else if (is_bracket_match) then |
| 1519 | ! Highlight matching brackets with cyan background |
| 1520 | call terminal_write(char(27) // '[46m' // utf8_ch // char(27) // '[0m') |
| 1521 | else if (pane%is_active .and. is_current_line) then |
| 1522 | ! Subtle background for current line in active pane |
| 1523 | call terminal_write(char(27) // '[48;5;237m' // utf8_ch // char(27) // '[0m') |
| 1524 | else if (.not. pane%is_active) then |
| 1525 | ! Inactive pane background |
| 1526 | call terminal_write(char(27) // '[48;5;234m' // utf8_ch // char(27) // '[0m') |
| 1527 | else |
| 1528 | ! Normal text |
| 1529 | call terminal_write(utf8_ch) |
| 1530 | end if |
| 1531 | |
| 1532 | display_col = display_col + char_width |
| 1533 | char_idx = char_idx + 1 |
| 1534 | end do |
| 1535 | |
| 1536 | ! Fill remaining width with spaces |
| 1537 | do while (display_col < content_width) |
| 1538 | if (.not. pane%is_active) then |
| 1539 | call terminal_write(char(27) // '[48;5;234m ' // char(27) // '[0m') |
| 1540 | else if (is_current_line) then |
| 1541 | call terminal_write(char(27) // '[48;5;237m ' // char(27) // '[0m') |
| 1542 | else |
| 1543 | call terminal_write(' ') |
| 1544 | end if |
| 1545 | display_col = display_col + 1 |
| 1546 | end do |
| 1547 | |
| 1548 | ! Reset attributes |
| 1549 | call terminal_write(char(27) // '[0m') |
| 1550 | |
| 1551 | if (allocated(utf8_ch)) deallocate(utf8_ch) |
| 1552 | end subroutine render_buffer_line_in_pane |
| 1553 | |
| 1554 | subroutine render_pane_separator(col, start_row, height) |
| 1555 | integer, intent(in) :: col, start_row, height |
| 1556 | integer :: row |
| 1557 | |
| 1558 | ! Draw vertical separator with distinct visual |
| 1559 | do row = start_row, start_row + height - 1 |
| 1560 | call terminal_move_cursor(row, col) |
| 1561 | ! Use reverse video for a solid separator |
| 1562 | call terminal_write(char(27) // '[7m ') ! Reverse video space |
| 1563 | call terminal_write(char(27) // '[0m') ! Reset |
| 1564 | end do |
| 1565 | end subroutine render_pane_separator |
| 1566 | |
| 1567 | subroutine render_cursor_for_panes(editor) |
| 1568 | use editor_state_module, only: pane_t |
| 1569 | type(editor_state_t), intent(in) :: editor |
| 1570 | type(pane_t) :: pane |
| 1571 | type(cursor_t) :: cursor |
| 1572 | integer :: tab_idx, pane_idx, i |
| 1573 | integer :: pane_col, pane_row, pane_width, pane_height |
| 1574 | integer :: screen_row, screen_col |
| 1575 | integer :: screen_width, screen_height |
| 1576 | integer :: col_offset |
| 1577 | character(len=:), allocatable :: line |
| 1578 | character :: cursor_char |
| 1579 | |
| 1580 | tab_idx = editor%active_tab_index |
| 1581 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1582 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1583 | |
| 1584 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 1585 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1586 | |
| 1587 | pane = editor%tabs(tab_idx)%panes(pane_idx) |
| 1588 | if (.not. allocated(pane%cursors)) return |
| 1589 | if (pane%active_cursor < 1 .or. pane%active_cursor > size(pane%cursors)) return |
| 1590 | |
| 1591 | ! Calculate column offset for line numbers |
| 1592 | if (show_line_numbers) then |
| 1593 | col_offset = LINE_NUMBER_WIDTH + 1 ! +1 for separator space |
| 1594 | else |
| 1595 | col_offset = 0 |
| 1596 | end if |
| 1597 | |
| 1598 | ! Calculate pane screen coordinates |
| 1599 | screen_width = editor%screen_cols |
| 1600 | screen_height = editor%screen_rows - 2 ! Account for tab bar (row 1) and status bar (last row) |
| 1601 | |
| 1602 | ! Reduce width if diagnostics panel is visible |
| 1603 | if (editor%diagnostics_panel%visible) then |
| 1604 | screen_width = screen_width - editor%diagnostics_panel%width |
| 1605 | end if |
| 1606 | |
| 1607 | ! Reduce width if references panel is visible |
| 1608 | if (editor%references_panel%visible) then |
| 1609 | screen_width = screen_width - editor%references_panel%width |
| 1610 | end if |
| 1611 | |
| 1612 | pane_col = 1 + int(pane%x_start * real(screen_width)) |
| 1613 | pane_width = int((pane%x_end - pane%x_start) * real(screen_width)) |
| 1614 | if (pane_idx < size(editor%tabs(tab_idx)%panes)) then |
| 1615 | pane_width = pane_width - 1 ! Reserve space for separator |
| 1616 | end if |
| 1617 | pane_row = 2 + int(pane%y_start * real(screen_height)) |
| 1618 | pane_height = int((pane%y_end - pane%y_start) * real(screen_height)) |
| 1619 | |
| 1620 | ! Account for pane header when multiple panes exist |
| 1621 | if (size(editor%tabs(tab_idx)%panes) > 1) then |
| 1622 | pane_row = pane_row + 1 ! Content starts after header |
| 1623 | pane_height = pane_height - 1 ! Height reduced by header |
| 1624 | end if |
| 1625 | |
| 1626 | ! For multiple cursors, render all inactive ones first |
| 1627 | if (size(pane%cursors) > 1) then |
| 1628 | do i = 1, size(pane%cursors) |
| 1629 | if (i /= pane%active_cursor) then |
| 1630 | cursor = pane%cursors(i) |
| 1631 | |
| 1632 | ! Calculate cursor position within the pane |
| 1633 | screen_row = pane_row + (cursor%line - pane%viewport_line) |
| 1634 | screen_col = pane_col + col_offset + (cursor%column - pane%viewport_column) |
| 1635 | |
| 1636 | ! Ensure cursor is within pane boundaries |
| 1637 | if (screen_row >= pane_row .and. screen_row < pane_row + pane_height .and. & |
| 1638 | screen_col >= pane_col + col_offset .and. screen_col < pane_col + pane_width) then |
| 1639 | ! Get the character at this cursor position |
| 1640 | line = buffer_get_line(pane%buffer, cursor%line) |
| 1641 | if (cursor%column <= len(line)) then |
| 1642 | cursor_char = line(cursor%column:cursor%column) |
| 1643 | else |
| 1644 | cursor_char = ' ' ! End of line |
| 1645 | end if |
| 1646 | |
| 1647 | ! Inactive cursor - draw character with reverse video |
| 1648 | call terminal_move_cursor(screen_row, screen_col) |
| 1649 | call terminal_write(char(27) // '[7m' // cursor_char) ! Inverse video |
| 1650 | call terminal_write(char(27) // '[0m') ! Reset |
| 1651 | end if |
| 1652 | end if |
| 1653 | end do |
| 1654 | end if |
| 1655 | |
| 1656 | ! Now render the active cursor |
| 1657 | cursor = pane%cursors(pane%active_cursor) |
| 1658 | |
| 1659 | ! Calculate cursor position within the pane, accounting for line numbers |
| 1660 | screen_row = pane_row + (cursor%line - pane%viewport_line) |
| 1661 | screen_col = pane_col + col_offset + (cursor%column - pane%viewport_column) |
| 1662 | |
| 1663 | ! Ensure cursor is within pane boundaries |
| 1664 | if (screen_row >= pane_row .and. screen_row < pane_row + pane_height .and. & |
| 1665 | screen_col >= pane_col + col_offset .and. screen_col < pane_col + pane_width) then |
| 1666 | call terminal_move_cursor(screen_row, screen_col) |
| 1667 | else |
| 1668 | ! Cursor is out of view, position at top-left of pane content area |
| 1669 | call terminal_move_cursor(pane_row, pane_col + col_offset) |
| 1670 | end if |
| 1671 | |
| 1672 | ! Always show cursor |
| 1673 | call terminal_show_cursor() |
| 1674 | end subroutine render_cursor_for_panes |
| 1675 | |
| 1676 | subroutine render_cursor_for_panes_with_tree(editor, tree_offset, editor_width) |
| 1677 | use editor_state_module, only: pane_t |
| 1678 | type(editor_state_t), intent(in) :: editor |
| 1679 | integer, intent(in) :: tree_offset, editor_width |
| 1680 | type(pane_t) :: pane |
| 1681 | type(cursor_t) :: cursor |
| 1682 | integer :: tab_idx, pane_idx |
| 1683 | integer :: pane_col, pane_row, pane_width, pane_height |
| 1684 | integer :: screen_row, screen_col, col_offset |
| 1685 | integer :: screen_height |
| 1686 | |
| 1687 | tab_idx = editor%active_tab_index |
| 1688 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1689 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1690 | |
| 1691 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 1692 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1693 | |
| 1694 | pane = editor%tabs(tab_idx)%panes(pane_idx) |
| 1695 | if (.not. allocated(pane%cursors)) return |
| 1696 | if (pane%active_cursor < 1 .or. pane%active_cursor > size(pane%cursors)) return |
| 1697 | |
| 1698 | cursor = pane%cursors(pane%active_cursor) |
| 1699 | |
| 1700 | ! Calculate column offset for line numbers |
| 1701 | if (show_line_numbers) then |
| 1702 | col_offset = LINE_NUMBER_WIDTH + 1 |
| 1703 | else |
| 1704 | col_offset = 0 |
| 1705 | end if |
| 1706 | |
| 1707 | ! Calculate pane coordinates (adjusted for tree) |
| 1708 | screen_height = editor%screen_rows - 2 |
| 1709 | pane_col = tree_offset + int(pane%x_start * real(editor_width)) |
| 1710 | pane_width = int((pane%x_end - pane%x_start) * real(editor_width)) |
| 1711 | if (pane_idx < size(editor%tabs(tab_idx)%panes)) then |
| 1712 | pane_width = pane_width - 1 |
| 1713 | end if |
| 1714 | pane_row = 2 + int(pane%y_start * real(screen_height)) |
| 1715 | pane_height = int((pane%y_end - pane%y_start) * real(screen_height)) |
| 1716 | |
| 1717 | ! Account for pane header |
| 1718 | if (size(editor%tabs(tab_idx)%panes) > 1) then |
| 1719 | pane_row = pane_row + 1 |
| 1720 | pane_height = pane_height - 1 |
| 1721 | end if |
| 1722 | |
| 1723 | ! Calculate cursor screen position |
| 1724 | screen_row = pane_row + (cursor%line - pane%viewport_line) |
| 1725 | screen_col = pane_col + col_offset + (cursor%column - pane%viewport_column) |
| 1726 | |
| 1727 | ! Ensure cursor is within pane boundaries |
| 1728 | if (screen_row >= pane_row .and. screen_row < pane_row + pane_height .and. & |
| 1729 | screen_col >= pane_col + col_offset .and. screen_col < pane_col + pane_width) then |
| 1730 | call terminal_move_cursor(screen_row, screen_col) |
| 1731 | else |
| 1732 | ! Cursor out of view, position at top-left of pane |
| 1733 | call terminal_move_cursor(pane_row, pane_col + col_offset) |
| 1734 | end if |
| 1735 | |
| 1736 | call terminal_show_cursor() |
| 1737 | end subroutine render_cursor_for_panes_with_tree |
| 1738 | |
| 1739 | subroutine render_cursor_in_pane(editor, pane_start_col, pane_width) |
| 1740 | type(editor_state_t), intent(in) :: editor |
| 1741 | integer, intent(in) :: pane_start_col, pane_width |
| 1742 | type(cursor_t) :: cursor |
| 1743 | integer :: screen_row, screen_col, col_offset, row_offset, min_row |
| 1744 | |
| 1745 | ! Calculate column offset for line numbers |
| 1746 | if (show_line_numbers) then |
| 1747 | col_offset = LINE_NUMBER_WIDTH + 1 |
| 1748 | else |
| 1749 | col_offset = 0 |
| 1750 | end if |
| 1751 | |
| 1752 | ! Account for tab bar offset - when tabs exist, row 1 is tab bar, content starts at row 2 |
| 1753 | if (size(editor%tabs) > 0) then |
| 1754 | row_offset = 2 ! Tab bar takes row 1 |
| 1755 | min_row = 2 ! Cursor cannot be in row 1 (tab bar) |
| 1756 | else |
| 1757 | row_offset = 1 ! No tab bar |
| 1758 | min_row = 1 ! Cursor can be in row 1 |
| 1759 | end if |
| 1760 | |
| 1761 | cursor = editor%cursors(editor%active_cursor) |
| 1762 | |
| 1763 | ! Calculate screen position within the editor pane |
| 1764 | screen_row = cursor%line - editor%viewport_line + row_offset |
| 1765 | screen_col = pane_start_col + col_offset + cursor%column - editor%viewport_column |
| 1766 | |
| 1767 | ! Ensure cursor is within pane bounds and not in tab bar |
| 1768 | if (screen_row >= min_row .and. screen_row < editor%screen_rows .and. & |
| 1769 | screen_col >= pane_start_col .and. screen_col <= pane_start_col + pane_width) then |
| 1770 | call terminal_move_cursor(screen_row, screen_col) |
| 1771 | call terminal_show_cursor() |
| 1772 | end if |
| 1773 | end subroutine render_cursor_in_pane |
| 1774 | |
| 1775 | ! Render tab bar at top of screen |
| 1776 | ! Optional start_col and width parameters for positioning in split view |
| 1777 | subroutine render_tab_bar(editor, start_col, width) |
| 1778 | type(editor_state_t), intent(in) :: editor |
| 1779 | integer, intent(in), optional :: start_col, width |
| 1780 | integer :: i, col, tab_count |
| 1781 | character(len=:), allocatable :: tab_label, filename_only |
| 1782 | character(len=256) :: temp_label |
| 1783 | integer :: slash_pos, last_slash |
| 1784 | character(len=1) :: modified_marker |
| 1785 | integer :: start_column, max_width |
| 1786 | |
| 1787 | tab_count = size(editor%tabs) |
| 1788 | if (tab_count == 0) return ! No tabs to display |
| 1789 | |
| 1790 | ! Use provided start_col and width, or default to full screen |
| 1791 | if (present(start_col)) then |
| 1792 | start_column = start_col |
| 1793 | else |
| 1794 | start_column = 1 |
| 1795 | end if |
| 1796 | |
| 1797 | if (present(width)) then |
| 1798 | max_width = width |
| 1799 | else |
| 1800 | max_width = editor%screen_cols |
| 1801 | end if |
| 1802 | |
| 1803 | ! Move to top row at starting column and clear the tab bar area |
| 1804 | call terminal_move_cursor(1, start_column) |
| 1805 | call terminal_write(repeat(' ', max_width)) |
| 1806 | |
| 1807 | ! Render each tab |
| 1808 | col = start_column |
| 1809 | do i = 1, tab_count |
| 1810 | ! Extract filename from full path |
| 1811 | filename_only = editor%tabs(i)%filename |
| 1812 | last_slash = 0 |
| 1813 | do slash_pos = len(editor%tabs(i)%filename), 1, -1 |
| 1814 | if (editor%tabs(i)%filename(slash_pos:slash_pos) == '/') then |
| 1815 | last_slash = slash_pos |
| 1816 | exit |
| 1817 | end if |
| 1818 | end do |
| 1819 | if (last_slash > 0 .and. last_slash < len(editor%tabs(i)%filename)) then |
| 1820 | filename_only = editor%tabs(i)%filename(last_slash+1:) |
| 1821 | end if |
| 1822 | |
| 1823 | ! Add modified marker |
| 1824 | if (editor%tabs(i)%modified) then |
| 1825 | modified_marker = '*' |
| 1826 | else |
| 1827 | modified_marker = ' ' |
| 1828 | end if |
| 1829 | |
| 1830 | ! Build tab label: [1: file.txt*] |
| 1831 | write(temp_label, '(A,I0,A,A,A,A)') '[', i, ': ', trim(filename_only), modified_marker, ']' |
| 1832 | tab_label = trim(temp_label) |
| 1833 | |
| 1834 | ! Check if we have room for this tab |
| 1835 | if (col + len(tab_label) > start_column + max_width) exit |
| 1836 | |
| 1837 | ! Position cursor |
| 1838 | call terminal_move_cursor(1, col) |
| 1839 | |
| 1840 | ! Apply orphan tab styling (gray foreground) |
| 1841 | if (editor%tabs(i)%is_orphan) then |
| 1842 | call terminal_write(char(27) // '[90m') ! Bright black/gray |
| 1843 | end if |
| 1844 | |
| 1845 | ! Highlight active tab |
| 1846 | if (i == editor%active_tab_index) then |
| 1847 | call terminal_write(char(27) // '[7m') ! Reverse video |
| 1848 | end if |
| 1849 | |
| 1850 | call terminal_write(tab_label) |
| 1851 | |
| 1852 | ! Reset if we applied any styling |
| 1853 | if (i == editor%active_tab_index .or. editor%tabs(i)%is_orphan) then |
| 1854 | call terminal_write(char(27) // '[0m') ! Reset |
| 1855 | end if |
| 1856 | |
| 1857 | col = col + len(tab_label) + 1 ! +1 for space between tabs |
| 1858 | end do |
| 1859 | end subroutine render_tab_bar |
| 1860 | |
| 1861 | ! UNUSED: Get diagnostic marker and color for a line |
| 1862 | ! Kept for potential future use |
| 1863 | ! subroutine get_diagnostic_marker(diagnostics, marker, color) |
| 1864 | ! type(diagnostic_t), intent(in) :: diagnostics(:) |
| 1865 | ! character(len=3), intent(out) :: marker ! UTF-8 characters can be up to 3 bytes |
| 1866 | ! character(len=:), allocatable, intent(out) :: color |
| 1867 | ! integer :: i, max_severity |
| 1868 | ! |
| 1869 | ! marker = ' ' |
| 1870 | ! color = '' |
| 1871 | ! |
| 1872 | ! if (size(diagnostics) == 0) return |
| 1873 | ! |
| 1874 | ! ! Find highest severity diagnostic |
| 1875 | ! max_severity = SEVERITY_HINT |
| 1876 | ! do i = 1, size(diagnostics) |
| 1877 | ! if (diagnostics(i)%severity < max_severity) then |
| 1878 | ! max_severity = diagnostics(i)%severity |
| 1879 | ! end if |
| 1880 | ! end do |
| 1881 | ! |
| 1882 | ! ! Set marker and color based on severity |
| 1883 | ! select case(max_severity) |
| 1884 | ! case(SEVERITY_ERROR) |
| 1885 | ! marker = '●' ! Filled circle for errors |
| 1886 | ! color = char(27) // '[31m' ! Red |
| 1887 | ! case(SEVERITY_WARNING) |
| 1888 | ! marker = '▲' ! Triangle for warnings |
| 1889 | ! color = char(27) // '[33m' ! Yellow |
| 1890 | ! case(SEVERITY_INFO) |
| 1891 | ! marker = '◆' ! Diamond for info |
| 1892 | ! color = char(27) // '[36m' ! Cyan |
| 1893 | ! case(SEVERITY_HINT) |
| 1894 | ! marker = '○' ! Empty circle for hints |
| 1895 | ! color = char(27) // '[90m' ! Gray |
| 1896 | ! end select |
| 1897 | ! end subroutine get_diagnostic_marker |
| 1898 | |
| 1899 | ! Render screen with LSP panel on the right (similar to render_screen_with_tree but for right side) |
| 1900 | subroutine render_screen_with_lsp_panel(buffer, editor, panel_type, match_mode_active, match_case_sens) |
| 1901 | use references_panel_module, only: references_panel_t, is_references_panel_visible |
| 1902 | use symbols_panel_module, only: symbols_panel_t, is_symbols_panel_visible |
| 1903 | use workspace_symbols_panel_module, only: workspace_symbols_panel_t, is_workspace_symbols_panel_visible |
| 1904 | type(buffer_t), intent(in) :: buffer |
| 1905 | type(editor_state_t), intent(inout) :: editor |
| 1906 | character(len=*), intent(in) :: panel_type ! "references", "symbols", or "workspace_symbols" |
| 1907 | logical, intent(in), optional :: match_mode_active |
| 1908 | logical, intent(in), optional :: match_case_sens |
| 1909 | integer :: panel_width, editor_end_col, editor_width |
| 1910 | integer :: separator_col, panel_start_col |
| 1911 | integer :: row |
| 1912 | |
| 1913 | call terminal_hide_cursor() |
| 1914 | |
| 1915 | ! Clear screen first to avoid artifacts |
| 1916 | do row = 1, editor%screen_rows |
| 1917 | call terminal_move_cursor(row, 1) |
| 1918 | call terminal_write(repeat(' ', editor%screen_cols)) |
| 1919 | end do |
| 1920 | |
| 1921 | ! Calculate split: 60% for editor, 40% for LSP panel |
| 1922 | panel_width = editor%screen_cols * 40 / 100 |
| 1923 | editor_width = editor%screen_cols - panel_width - 1 ! -1 for separator |
| 1924 | editor_end_col = editor_width |
| 1925 | separator_col = editor_width + 1 |
| 1926 | panel_start_col = separator_col + 1 |
| 1927 | |
| 1928 | ! Render tab bar if there are any tabs (positioned in editor pane area) |
| 1929 | call render_tab_bar(editor, 1, editor_width) |
| 1930 | |
| 1931 | ! Render editor in left pane (check for multiple panes) |
| 1932 | call render_editor_area_for_lsp_panel(editor, 1, editor_width) |
| 1933 | |
| 1934 | ! Render status bar (full width) |
| 1935 | call render_status_bar(editor, buffer, match_mode_active, match_case_sens) |
| 1936 | |
| 1937 | ! Render vertical separator (start at row 2 for tab bar) |
| 1938 | call render_vertical_separator(separator_col, 2, editor%screen_rows - 1) |
| 1939 | |
| 1940 | ! Render appropriate LSP panel on the right |
| 1941 | select case (panel_type) |
| 1942 | case ("references") |
| 1943 | if (is_references_panel_visible(editor%references_panel)) then |
| 1944 | call render_lsp_references_panel(editor%references_panel, panel_start_col, panel_width, & |
| 1945 | 2, editor%screen_rows - 1) |
| 1946 | end if |
| 1947 | case ("symbols") |
| 1948 | if (is_symbols_panel_visible(editor%symbols_panel)) then |
| 1949 | call render_lsp_symbols_panel(editor%symbols_panel, editor%screen_rows - 1) |
| 1950 | end if |
| 1951 | case ("workspace_symbols") |
| 1952 | if (is_workspace_symbols_panel_visible(editor%workspace_symbols_panel)) then |
| 1953 | call render_lsp_workspace_symbols_panel(editor%workspace_symbols_panel, editor%screen_rows - 1) |
| 1954 | end if |
| 1955 | end select |
| 1956 | |
| 1957 | ! Render cursor |
| 1958 | call render_cursor_for_lsp_panel(editor, 1, editor_width) |
| 1959 | |
| 1960 | call terminal_show_cursor() |
| 1961 | end subroutine render_screen_with_lsp_panel |
| 1962 | |
| 1963 | ! Helper to render editor area when LSP panel is on right |
| 1964 | subroutine render_editor_area_for_lsp_panel(editor, start_col, width) |
| 1965 | use editor_state_module, only: pane_t |
| 1966 | type(editor_state_t), intent(inout) :: editor |
| 1967 | integer, intent(in) :: start_col, width |
| 1968 | type(pane_t) :: pane |
| 1969 | integer :: i, tab_idx, n_panes |
| 1970 | integer :: pane_col, pane_row, pane_width, pane_height |
| 1971 | integer :: screen_height |
| 1972 | |
| 1973 | ! Get active tab |
| 1974 | tab_idx = editor%active_tab_index |
| 1975 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) then |
| 1976 | return |
| 1977 | end if |
| 1978 | |
| 1979 | if (.not. allocated(editor%tabs(tab_idx)%panes)) then |
| 1980 | return |
| 1981 | end if |
| 1982 | |
| 1983 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 1984 | if (n_panes == 0) return |
| 1985 | |
| 1986 | screen_height = editor%screen_rows - 2 ! Account for tab bar and status bar |
| 1987 | |
| 1988 | ! If only one pane, use simple rendering |
| 1989 | if (n_panes == 1) then |
| 1990 | call render_editor_pane(editor%tabs(tab_idx)%panes(1)%buffer, editor, start_col, width) |
| 1991 | return |
| 1992 | end if |
| 1993 | |
| 1994 | ! Multiple panes: render each with adjusted coordinates |
| 1995 | do i = 2, editor%screen_rows - 1 |
| 1996 | call terminal_move_cursor(i, start_col) |
| 1997 | call terminal_write(repeat(' ', width)) |
| 1998 | end do |
| 1999 | |
| 2000 | do i = 1, n_panes |
| 2001 | pane = editor%tabs(tab_idx)%panes(i) |
| 2002 | |
| 2003 | pane_col = start_col + int(pane%x_start * real(width)) |
| 2004 | if (i < n_panes) then |
| 2005 | pane_width = int((pane%x_end - pane%x_start) * real(width)) - 1 |
| 2006 | else |
| 2007 | pane_width = int((pane%x_end - pane%x_start) * real(width)) |
| 2008 | end if |
| 2009 | pane_row = 2 + int(pane%y_start * real(screen_height)) |
| 2010 | pane_height = int((pane%y_end - pane%y_start) * real(screen_height)) |
| 2011 | |
| 2012 | editor%tabs(tab_idx)%panes(i)%screen_col = pane_col |
| 2013 | editor%tabs(tab_idx)%panes(i)%screen_row = pane_row |
| 2014 | editor%tabs(tab_idx)%panes(i)%screen_width = pane_width |
| 2015 | editor%tabs(tab_idx)%panes(i)%screen_height = pane_height |
| 2016 | |
| 2017 | call render_single_pane(editor, i, pane_col, pane_row, pane_width, pane_height) |
| 2018 | |
| 2019 | if (i < n_panes) then |
| 2020 | call render_pane_separator(pane_col + pane_width, pane_row, pane_height) |
| 2021 | end if |
| 2022 | end do |
| 2023 | end subroutine render_editor_area_for_lsp_panel |
| 2024 | |
| 2025 | ! Helper to render cursor when LSP panel is visible |
| 2026 | subroutine render_cursor_for_lsp_panel(editor, start_col, width) |
| 2027 | type(editor_state_t), intent(inout) :: editor |
| 2028 | integer, intent(in) :: start_col, width |
| 2029 | integer :: tab_idx, n_panes |
| 2030 | |
| 2031 | tab_idx = editor%active_tab_index |
| 2032 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 2033 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 2034 | |
| 2035 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 2036 | if (n_panes == 0) return |
| 2037 | |
| 2038 | if (n_panes > 1) then |
| 2039 | call render_cursor_for_panes_in_lsp_view(editor) |
| 2040 | else |
| 2041 | call render_cursor_in_pane(editor, start_col, width) |
| 2042 | end if |
| 2043 | end subroutine render_cursor_for_lsp_panel |
| 2044 | |
| 2045 | ! Helper to render cursor for multiple panes when LSP panel is visible |
| 2046 | subroutine render_cursor_for_panes_in_lsp_view(editor) |
| 2047 | use editor_state_module, only: pane_t |
| 2048 | type(editor_state_t), intent(inout) :: editor |
| 2049 | integer :: tab_idx, active_pane |
| 2050 | type(pane_t) :: pane |
| 2051 | integer :: screen_row, screen_col |
| 2052 | |
| 2053 | tab_idx = editor%active_tab_index |
| 2054 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 2055 | |
| 2056 | active_pane = editor%tabs(tab_idx)%active_pane_index |
| 2057 | if (active_pane < 1 .or. active_pane > size(editor%tabs(tab_idx)%panes)) return |
| 2058 | |
| 2059 | pane = editor%tabs(tab_idx)%panes(active_pane) |
| 2060 | |
| 2061 | ! Calculate cursor position relative to pane |
| 2062 | screen_row = pane%screen_row + (editor%cursors(editor%active_cursor)%line - pane%viewport_line) |
| 2063 | screen_col = pane%screen_col + (editor%cursors(editor%active_cursor)%column - 1) |
| 2064 | |
| 2065 | if (screen_row >= pane%screen_row .and. & |
| 2066 | screen_row < pane%screen_row + pane%screen_height .and. & |
| 2067 | screen_col >= pane%screen_col .and. & |
| 2068 | screen_col < pane%screen_col + pane%screen_width) then |
| 2069 | call terminal_move_cursor(screen_row, screen_col) |
| 2070 | end if |
| 2071 | end subroutine render_cursor_for_panes_in_lsp_view |
| 2072 | |
| 2073 | ! Render references panel in offcanvas mode (right side, full height) |
| 2074 | subroutine render_lsp_references_panel(panel, start_col, width, start_row, end_row) |
| 2075 | use references_panel_module, only: references_panel_t |
| 2076 | type(references_panel_t), intent(in) :: panel |
| 2077 | integer, intent(in) :: start_col, width, start_row, end_row |
| 2078 | integer :: row, i, visible_index, max_visible |
| 2079 | character(len=256) :: line |
| 2080 | character(len=100) :: header, location_str |
| 2081 | character(len=:), allocatable :: display_text, filename_display |
| 2082 | character(len=1), parameter :: ESC = achar(27) |
| 2083 | |
| 2084 | ! Clear panel area |
| 2085 | do row = start_row, end_row |
| 2086 | call terminal_move_cursor(row, start_col) |
| 2087 | call terminal_write(repeat(' ', width)) |
| 2088 | end do |
| 2089 | |
| 2090 | row = start_row |
| 2091 | |
| 2092 | ! Header with symbol name |
| 2093 | call terminal_move_cursor(row, start_col) |
| 2094 | call terminal_write(ESC // '[48;5;237m') ! Dark background |
| 2095 | |
| 2096 | if (allocated(panel%symbol_name)) then |
| 2097 | write(header, '(A,A,A,I0,A)') " References: ", trim(panel%symbol_name), & |
| 2098 | " (", panel%num_references, ") " |
| 2099 | else |
| 2100 | write(header, '(A,I0,A)') " References (", panel%num_references, ") " |
| 2101 | end if |
| 2102 | |
| 2103 | ! Truncate header if too long |
| 2104 | if (len_trim(header) > width) then |
| 2105 | header = header(1:width-3) // "..." |
| 2106 | end if |
| 2107 | |
| 2108 | call terminal_write(ESC // '[1m' // trim(header)) |
| 2109 | ! Pad rest of header line |
| 2110 | if (len_trim(header) < width) then |
| 2111 | call terminal_write(repeat(' ', width - len_trim(header))) |
| 2112 | end if |
| 2113 | call terminal_write(ESC // '[0m') |
| 2114 | row = row + 1 |
| 2115 | |
| 2116 | ! Separator |
| 2117 | call terminal_move_cursor(row, start_col) |
| 2118 | call terminal_write(ESC // '[48;5;237m' // repeat("─", width) // ESC // '[0m') |
| 2119 | row = row + 1 |
| 2120 | |
| 2121 | ! Legend |
| 2122 | call terminal_move_cursor(row, start_col) |
| 2123 | call terminal_write(ESC // '[90mj/k:nav enter:jump esc:close' // ESC // '[0m') |
| 2124 | row = row + 1 |
| 2125 | |
| 2126 | ! Separator |
| 2127 | call terminal_move_cursor(row, start_col) |
| 2128 | call terminal_write(ESC // '[90m' // repeat("─", width) // ESC // '[0m') |
| 2129 | row = row + 1 |
| 2130 | |
| 2131 | ! Calculate max visible items |
| 2132 | max_visible = end_row - row + 1 |
| 2133 | |
| 2134 | ! Display references |
| 2135 | if (panel%num_references == 0) then |
| 2136 | call terminal_move_cursor(row, start_col) |
| 2137 | call terminal_write(ESC // '[48;5;235m' // ESC // '[90m') |
| 2138 | call terminal_write(" No references found") |
| 2139 | if (20 < width) then |
| 2140 | call terminal_write(repeat(' ', width - 20)) |
| 2141 | end if |
| 2142 | call terminal_write(ESC // '[0m') |
| 2143 | else |
| 2144 | do i = 1, min(max_visible, panel%num_references - panel%scroll_offset) |
| 2145 | visible_index = panel%scroll_offset + i |
| 2146 | if (visible_index > panel%num_references) exit |
| 2147 | |
| 2148 | call terminal_move_cursor(row, start_col) |
| 2149 | |
| 2150 | ! Highlight selected item |
| 2151 | if (visible_index == panel%selected_index) then |
| 2152 | call terminal_write(ESC // '[48;5;240m') ! Highlight background |
| 2153 | else |
| 2154 | call terminal_write(ESC // '[48;5;235m') ! Normal background |
| 2155 | end if |
| 2156 | |
| 2157 | ! Format location string |
| 2158 | if (allocated(panel%references(visible_index)%filename)) then |
| 2159 | ! Extract just the filename from full path |
| 2160 | filename_display = get_basename_str(panel%references(visible_index)%filename) |
| 2161 | write(location_str, '(A,A,I0,A,I0)') & |
| 2162 | trim(filename_display), & |
| 2163 | ":", panel%references(visible_index)%line, & |
| 2164 | ":", panel%references(visible_index)%column |
| 2165 | else |
| 2166 | write(location_str, '(I0,A,I0)') & |
| 2167 | panel%references(visible_index)%line, & |
| 2168 | ":", panel%references(visible_index)%column |
| 2169 | end if |
| 2170 | |
| 2171 | ! Build line with location and preview |
| 2172 | line = " " // trim(adjustl(location_str)) |
| 2173 | |
| 2174 | ! Add preview text if available |
| 2175 | if (allocated(panel%references(visible_index)%preview_text)) then |
| 2176 | display_text = trim(panel%references(visible_index)%preview_text) |
| 2177 | if (len(line) + len(display_text) + 2 < width) then |
| 2178 | line = trim(line) // " " // display_text |
| 2179 | else if (len(line) + 5 < width) then |
| 2180 | line = trim(line) // " " // display_text(1:width-len(line)-4) // "..." |
| 2181 | end if |
| 2182 | end if |
| 2183 | |
| 2184 | ! Write line and pad to width |
| 2185 | call terminal_write(trim(line)) |
| 2186 | if (len_trim(line) < width) then |
| 2187 | call terminal_write(repeat(' ', width - len_trim(line))) |
| 2188 | end if |
| 2189 | call terminal_write(ESC // '[0m') |
| 2190 | |
| 2191 | row = row + 1 |
| 2192 | if (row > end_row) exit |
| 2193 | end do |
| 2194 | end if |
| 2195 | end subroutine render_lsp_references_panel |
| 2196 | |
| 2197 | ! Render symbols panel in offcanvas mode (right side, full height) |
| 2198 | subroutine render_lsp_symbols_panel(panel, screen_height) |
| 2199 | use symbols_panel_module, only: symbols_panel_t, render_symbols_panel |
| 2200 | type(symbols_panel_t), intent(in) :: panel |
| 2201 | integer, intent(in) :: screen_height |
| 2202 | |
| 2203 | ! Delegate to the real symbols panel renderer |
| 2204 | ! The panel manages its own positioning via panel_start_col and panel_width |
| 2205 | call render_symbols_panel(panel, screen_height) |
| 2206 | end subroutine render_lsp_symbols_panel |
| 2207 | |
| 2208 | ! Render workspace symbols panel in offcanvas mode (right side, full height) |
| 2209 | subroutine render_lsp_workspace_symbols_panel(panel, screen_height) |
| 2210 | use workspace_symbols_panel_module, only: workspace_symbols_panel_t, render_workspace_symbols_panel |
| 2211 | type(workspace_symbols_panel_t), intent(in) :: panel |
| 2212 | integer, intent(in) :: screen_height |
| 2213 | |
| 2214 | ! Delegate to the real workspace symbols panel renderer |
| 2215 | ! The panel manages its own positioning via panel_start_col and panel_width |
| 2216 | call render_workspace_symbols_panel(panel, screen_height) |
| 2217 | end subroutine render_lsp_workspace_symbols_panel |
| 2218 | |
| 2219 | ! Helper function to extract basename from path |
| 2220 | function get_basename_str(path) result(basename) |
| 2221 | character(len=*), intent(in) :: path |
| 2222 | character(len=:), allocatable :: basename |
| 2223 | integer :: i, last_slash |
| 2224 | |
| 2225 | last_slash = 0 |
| 2226 | do i = len(path), 1, -1 |
| 2227 | if (path(i:i) == '/' .or. path(i:i) == '\') then |
| 2228 | last_slash = i |
| 2229 | exit |
| 2230 | end if |
| 2231 | end do |
| 2232 | |
| 2233 | if (last_slash > 0 .and. last_slash < len(path)) then |
| 2234 | basename = path(last_slash+1:len(path)) |
| 2235 | else |
| 2236 | basename = path |
| 2237 | end if |
| 2238 | end function get_basename_str |
| 2239 | |
| 2240 | end module renderer_module |