| 1 | module window_mod |
| 2 | use, intrinsic :: iso_c_binding |
| 3 | use types |
| 4 | use glfw_bindings |
| 5 | use gl_bindings |
| 6 | use pty_mod |
| 7 | use terminal_mod |
| 8 | use selection_mod |
| 9 | implicit none |
| 10 | private |
| 11 | |
| 12 | public :: window_t, selection_t |
| 13 | public :: window_create, window_destroy |
| 14 | public :: window_should_close, window_swap_buffers, window_poll_events |
| 15 | public :: window_get_size, window_set_pty, window_set_terminal |
| 16 | public :: window_set_title, window_set_cell_size, window_set_blur |
| 17 | public :: window_get_selection, window_clipboard_set, window_clipboard_get |
| 18 | public :: window_get_font_delta, window_clear_font_delta, window_set_font_size |
| 19 | public :: window_set_render_callback, window_is_resizing |
| 20 | public :: window_get_tab_action, window_clear_tab_action |
| 21 | public :: window_get_pane_action, window_clear_pane_action |
| 22 | |
| 23 | ! Tab action constants |
| 24 | integer, parameter, public :: TAB_ACTION_NONE = 0 |
| 25 | integer, parameter, public :: TAB_ACTION_NEW = 1 |
| 26 | integer, parameter, public :: TAB_ACTION_CLOSE = 2 |
| 27 | integer, parameter, public :: TAB_ACTION_NEXT = 3 |
| 28 | integer, parameter, public :: TAB_ACTION_PREV = 4 |
| 29 | ! TAB_ACTION_GOTO_1 through TAB_ACTION_GOTO_9 are 10-18 |
| 30 | |
| 31 | ! Pane action constants |
| 32 | integer, parameter, public :: PANE_ACTION_NONE = 0 |
| 33 | integer, parameter, public :: PANE_ACTION_SPLIT_V = 1 |
| 34 | integer, parameter, public :: PANE_ACTION_SPLIT_H = 2 |
| 35 | integer, parameter, public :: PANE_ACTION_NAV_LEFT = 3 |
| 36 | integer, parameter, public :: PANE_ACTION_NAV_RIGHT = 4 |
| 37 | integer, parameter, public :: PANE_ACTION_NAV_UP = 5 |
| 38 | integer, parameter, public :: PANE_ACTION_NAV_DOWN = 6 |
| 39 | |
| 40 | type :: window_t |
| 41 | type(c_ptr) :: handle = c_null_ptr |
| 42 | integer :: width = 0 |
| 43 | integer :: height = 0 |
| 44 | integer :: fb_width = 0 |
| 45 | integer :: fb_height = 0 |
| 46 | end type window_t |
| 47 | |
| 48 | ! Module-level window pointer for callbacks |
| 49 | type(c_ptr), save :: current_window = c_null_ptr |
| 50 | |
| 51 | ! Module-level PTY pointer for keyboard input |
| 52 | type(pty_t), pointer, save :: active_pty => null() |
| 53 | |
| 54 | ! Module-level terminal pointer for scrollback |
| 55 | type(terminal_t), pointer, save :: active_term => null() |
| 56 | |
| 57 | ! Selection state for mouse-based text selection |
| 58 | type(selection_t), save :: active_selection |
| 59 | |
| 60 | ! Cell dimensions for mouse coordinate conversion |
| 61 | integer, save :: cell_width = 10 |
| 62 | integer, save :: cell_height = 18 |
| 63 | |
| 64 | ! Font size adjustment state |
| 65 | integer, save :: pending_font_delta = 0 ! +2, -2, or -999 for reset |
| 66 | integer, save :: current_font_size = 16 ! Track current size |
| 67 | |
| 68 | ! Tab action state |
| 69 | integer, save :: pending_tab_action = 0 ! 0=none, 1=new, 2=close, 3=next, 4=prev, 10-18=goto |
| 70 | |
| 71 | ! Pane action state |
| 72 | integer, save :: pending_pane_action = 0 ! 0=none, 1=split_v, 2=split_h, 3-6=nav |
| 73 | |
| 74 | ! Live resize rendering support |
| 75 | logical, save :: is_resizing = .false. |
| 76 | procedure(render_callback_interface), pointer, save :: render_callback => null() |
| 77 | |
| 78 | ! Abstract interface for render callback |
| 79 | abstract interface |
| 80 | subroutine render_callback_interface() |
| 81 | end subroutine render_callback_interface |
| 82 | end interface |
| 83 | |
| 84 | ! Interface to C helper for loading OpenGL |
| 85 | interface |
| 86 | integer(c_int) function fortty_load_gl() bind(C, name="fortty_load_gl") |
| 87 | import :: c_int |
| 88 | end function fortty_load_gl |
| 89 | |
| 90 | ! macOS window blur (no-op on other platforms) |
| 91 | subroutine fortty_set_window_blur_c(window, enable) bind(C, name="fortty_set_window_blur") |
| 92 | import :: c_ptr, c_int |
| 93 | type(c_ptr), value :: window |
| 94 | integer(c_int), value :: enable |
| 95 | end subroutine fortty_set_window_blur_c |
| 96 | end interface |
| 97 | |
| 98 | contains |
| 99 | |
| 100 | function window_create(width, height, title, transparent) result(win) |
| 101 | integer, intent(in) :: width, height |
| 102 | character(len=*), intent(in) :: title |
| 103 | logical, intent(in), optional :: transparent |
| 104 | type(window_t) :: win |
| 105 | type(c_funptr) :: dummy |
| 106 | integer(c_int) :: gl_loaded |
| 107 | character(len=256) :: c_title |
| 108 | |
| 109 | ! Initialize GLFW |
| 110 | if (glfwInit() == GLFW_FALSE) then |
| 111 | print *, "Error: Failed to initialize GLFW" |
| 112 | stop 1 |
| 113 | end if |
| 114 | |
| 115 | ! Set error callback |
| 116 | dummy = glfwSetErrorCallback(c_funloc(error_callback)) |
| 117 | |
| 118 | ! Request OpenGL 3.3 Core Profile |
| 119 | call glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3) |
| 120 | call glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3) |
| 121 | call glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE) |
| 122 | call glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE) |
| 123 | |
| 124 | ! Enable transparent framebuffer if requested (for window opacity) |
| 125 | if (present(transparent)) then |
| 126 | if (transparent) then |
| 127 | call glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE) |
| 128 | end if |
| 129 | end if |
| 130 | |
| 131 | ! Create window |
| 132 | c_title = trim(title) // c_null_char |
| 133 | win%handle = glfwCreateWindow(width, height, c_title, c_null_ptr, c_null_ptr) |
| 134 | |
| 135 | if (.not. c_associated(win%handle)) then |
| 136 | print *, "Error: Failed to create GLFW window" |
| 137 | call glfwTerminate() |
| 138 | stop 1 |
| 139 | end if |
| 140 | |
| 141 | win%width = width |
| 142 | win%height = height |
| 143 | current_window = win%handle |
| 144 | |
| 145 | ! Make context current |
| 146 | call glfwMakeContextCurrent(win%handle) |
| 147 | |
| 148 | ! Load OpenGL functions via GLAD |
| 149 | gl_loaded = fortty_load_gl() |
| 150 | if (gl_loaded == 0) then |
| 151 | print *, "Error: Failed to load OpenGL functions" |
| 152 | call glfwDestroyWindow(win%handle) |
| 153 | call glfwTerminate() |
| 154 | stop 1 |
| 155 | end if |
| 156 | |
| 157 | ! Get actual framebuffer size (may differ on HiDPI) |
| 158 | call glfwGetFramebufferSize(win%handle, win%fb_width, win%fb_height) |
| 159 | |
| 160 | ! Set initial viewport |
| 161 | call glViewport(0, 0, win%fb_width, win%fb_height) |
| 162 | |
| 163 | ! Register callbacks |
| 164 | dummy = glfwSetFramebufferSizeCallback(win%handle, c_funloc(framebuffer_size_callback)) |
| 165 | dummy = glfwSetWindowRefreshCallback(win%handle, c_funloc(window_refresh_callback)) |
| 166 | dummy = glfwSetKeyCallback(win%handle, c_funloc(key_callback)) |
| 167 | dummy = glfwSetCharCallback(win%handle, c_funloc(char_callback)) |
| 168 | dummy = glfwSetScrollCallback(win%handle, c_funloc(scroll_callback)) |
| 169 | dummy = glfwSetMouseButtonCallback(win%handle, c_funloc(mouse_button_callback)) |
| 170 | dummy = glfwSetCursorPosCallback(win%handle, c_funloc(cursor_pos_callback)) |
| 171 | |
| 172 | end function window_create |
| 173 | |
| 174 | subroutine window_destroy(win) |
| 175 | type(window_t), intent(inout) :: win |
| 176 | |
| 177 | if (c_associated(win%handle)) then |
| 178 | call glfwDestroyWindow(win%handle) |
| 179 | win%handle = c_null_ptr |
| 180 | end if |
| 181 | |
| 182 | call glfwTerminate() |
| 183 | end subroutine window_destroy |
| 184 | |
| 185 | function window_should_close(win) result(should) |
| 186 | type(window_t), intent(in) :: win |
| 187 | logical :: should |
| 188 | |
| 189 | should = glfwWindowShouldClose(win%handle) /= GLFW_FALSE |
| 190 | end function window_should_close |
| 191 | |
| 192 | subroutine window_swap_buffers(win) |
| 193 | type(window_t), intent(in) :: win |
| 194 | |
| 195 | call glfwSwapBuffers(win%handle) |
| 196 | end subroutine window_swap_buffers |
| 197 | |
| 198 | subroutine window_poll_events() |
| 199 | ! Use WaitEventsTimeout instead of PollEvents for Wayland compatibility |
| 200 | ! This allows the compositor to send ping-pong messages to verify the app |
| 201 | ! is responsive, even when on an inactive workspace. 10ms timeout provides |
| 202 | ! ~100Hz max update rate while allowing proper event processing. |
| 203 | call glfwWaitEventsTimeout(0.01d0) |
| 204 | end subroutine window_poll_events |
| 205 | |
| 206 | ! Get current framebuffer size |
| 207 | subroutine window_get_size(win, width, height) |
| 208 | type(window_t), intent(in) :: win |
| 209 | integer, intent(out) :: width, height |
| 210 | integer(c_int) :: w, h |
| 211 | |
| 212 | ! Use window size (points) not framebuffer size (pixels) |
| 213 | ! This ensures projection and cell math work correctly on HiDPI displays |
| 214 | call glfwGetWindowSize(win%handle, w, h) |
| 215 | width = int(w) |
| 216 | height = int(h) |
| 217 | end subroutine window_get_size |
| 218 | |
| 219 | ! Callback: handle window resize |
| 220 | subroutine framebuffer_size_callback(window, width, height) bind(C) |
| 221 | type(c_ptr), value :: window |
| 222 | integer(c_int), value :: width, height |
| 223 | |
| 224 | call glViewport(0, 0, width, height) |
| 225 | |
| 226 | ! Mark that we're in a resize operation and trigger a redraw |
| 227 | ! This ensures smooth rendering during live resize on macOS |
| 228 | is_resizing = .true. |
| 229 | if (associated(render_callback)) then |
| 230 | call render_callback() |
| 231 | end if |
| 232 | end subroutine framebuffer_size_callback |
| 233 | |
| 234 | ! Callback: handle window refresh (called when window needs redrawing) |
| 235 | subroutine window_refresh_callback(window) bind(C) |
| 236 | type(c_ptr), value :: window |
| 237 | |
| 238 | ! Trigger a redraw via the render callback |
| 239 | if (associated(render_callback)) then |
| 240 | call render_callback() |
| 241 | end if |
| 242 | end subroutine window_refresh_callback |
| 243 | |
| 244 | ! Set PTY for keyboard input |
| 245 | subroutine window_set_pty(p) |
| 246 | type(pty_t), target, intent(in) :: p |
| 247 | |
| 248 | active_pty => p |
| 249 | end subroutine window_set_pty |
| 250 | |
| 251 | ! Set terminal for scrollback control |
| 252 | subroutine window_set_terminal(t) |
| 253 | type(terminal_t), target, intent(in) :: t |
| 254 | |
| 255 | active_term => t |
| 256 | end subroutine window_set_terminal |
| 257 | |
| 258 | ! Callback: handle key presses (special keys and Ctrl combinations) |
| 259 | subroutine key_callback(window, key, scancode, action, mods) bind(C) |
| 260 | type(c_ptr), value :: window |
| 261 | integer(c_int), value :: key, scancode, action, mods |
| 262 | character(len=16) :: seq |
| 263 | integer :: seq_len |
| 264 | |
| 265 | ! Only process press and repeat events |
| 266 | if (action == GLFW_RELEASE) return |
| 267 | |
| 268 | ! Check if PTY is active |
| 269 | if (.not. associated(active_pty)) return |
| 270 | |
| 271 | ! Close window on Escape (keep this for development) |
| 272 | if (key == GLFW_KEY_ESCAPE .and. action == GLFW_PRESS) then |
| 273 | call glfwSetWindowShouldClose(window, GLFW_TRUE) |
| 274 | return |
| 275 | end if |
| 276 | |
| 277 | ! Handle Shift+PageUp/Down for scrollback (before resetting scroll) |
| 278 | if (associated(active_term) .and. iand(mods, GLFW_MOD_SHIFT) /= 0) then |
| 279 | if (key == GLFW_KEY_PAGE_UP) then |
| 280 | call terminal_scroll_view(active_term, active_term%rows) |
| 281 | return |
| 282 | else if (key == GLFW_KEY_PAGE_DOWN) then |
| 283 | call terminal_scroll_view(active_term, -active_term%rows) |
| 284 | return |
| 285 | end if |
| 286 | end if |
| 287 | |
| 288 | ! Reset scroll view on any other key input (return to live view) |
| 289 | if (associated(active_term)) then |
| 290 | call terminal_reset_scroll_view(active_term) |
| 291 | end if |
| 292 | |
| 293 | ! Handle Ctrl+Shift+V for paste |
| 294 | if (iand(mods, GLFW_MOD_CONTROL) /= 0 .and. iand(mods, GLFW_MOD_SHIFT) /= 0) then |
| 295 | if (key == GLFW_KEY_V) then |
| 296 | call handle_paste(window) |
| 297 | return |
| 298 | end if |
| 299 | end if |
| 300 | |
| 301 | ! Handle font size adjustment: Ctrl/Cmd + Plus/Minus/0 |
| 302 | if (iand(mods, GLFW_MOD_CONTROL) /= 0 .or. iand(mods, GLFW_MOD_SUPER) /= 0) then |
| 303 | if (key == GLFW_KEY_EQUAL .or. key == GLFW_KEY_KP_ADD) then |
| 304 | ! Ctrl/Cmd + = or numpad + (increase font size) |
| 305 | pending_font_delta = 2 |
| 306 | return |
| 307 | else if (key == GLFW_KEY_MINUS .or. key == GLFW_KEY_KP_SUBTRACT) then |
| 308 | ! Ctrl/Cmd + - (decrease font size) |
| 309 | pending_font_delta = -2 |
| 310 | return |
| 311 | else if (key == GLFW_KEY_0) then |
| 312 | ! Ctrl/Cmd + 0 (reset font size) |
| 313 | pending_font_delta = -999 |
| 314 | return |
| 315 | end if |
| 316 | end if |
| 317 | |
| 318 | ! Handle tab management: Ctrl/Cmd + T/W/[/]/1-9 |
| 319 | if (iand(mods, GLFW_MOD_CONTROL) /= 0 .or. iand(mods, GLFW_MOD_SUPER) /= 0) then |
| 320 | select case (key) |
| 321 | case (GLFW_KEY_T) |
| 322 | ! New tab |
| 323 | pending_tab_action = TAB_ACTION_NEW |
| 324 | return |
| 325 | case (GLFW_KEY_W) |
| 326 | ! Close tab |
| 327 | pending_tab_action = TAB_ACTION_CLOSE |
| 328 | return |
| 329 | case (GLFW_KEY_RIGHT_BRACKET) |
| 330 | ! Next tab (Cmd+]) |
| 331 | pending_tab_action = TAB_ACTION_NEXT |
| 332 | return |
| 333 | case (GLFW_KEY_LEFT_BRACKET) |
| 334 | ! Previous tab (Cmd+[) |
| 335 | pending_tab_action = TAB_ACTION_PREV |
| 336 | return |
| 337 | case (GLFW_KEY_1) |
| 338 | pending_tab_action = 10 |
| 339 | return |
| 340 | case (GLFW_KEY_2) |
| 341 | pending_tab_action = 11 |
| 342 | return |
| 343 | case (GLFW_KEY_3) |
| 344 | pending_tab_action = 12 |
| 345 | return |
| 346 | case (GLFW_KEY_4) |
| 347 | pending_tab_action = 13 |
| 348 | return |
| 349 | case (GLFW_KEY_5) |
| 350 | pending_tab_action = 14 |
| 351 | return |
| 352 | case (GLFW_KEY_6) |
| 353 | pending_tab_action = 15 |
| 354 | return |
| 355 | case (GLFW_KEY_7) |
| 356 | pending_tab_action = 16 |
| 357 | return |
| 358 | case (GLFW_KEY_8) |
| 359 | pending_tab_action = 17 |
| 360 | return |
| 361 | case (GLFW_KEY_9) |
| 362 | pending_tab_action = 18 |
| 363 | return |
| 364 | |
| 365 | ! Pane splitting: Cmd/Ctrl + \ (vertical), Cmd/Ctrl + Shift + \ (horizontal) |
| 366 | case (GLFW_KEY_BACKSLASH) |
| 367 | if (iand(mods, GLFW_MOD_SHIFT) /= 0) then |
| 368 | pending_pane_action = PANE_ACTION_SPLIT_H |
| 369 | else |
| 370 | pending_pane_action = PANE_ACTION_SPLIT_V |
| 371 | end if |
| 372 | return |
| 373 | |
| 374 | ! Pane navigation with arrow keys: Cmd/Ctrl + Arrow |
| 375 | case (GLFW_KEY_LEFT) |
| 376 | pending_pane_action = PANE_ACTION_NAV_LEFT |
| 377 | return |
| 378 | case (GLFW_KEY_RIGHT) |
| 379 | pending_pane_action = PANE_ACTION_NAV_RIGHT |
| 380 | return |
| 381 | case (GLFW_KEY_UP) |
| 382 | pending_pane_action = PANE_ACTION_NAV_UP |
| 383 | return |
| 384 | case (GLFW_KEY_DOWN) |
| 385 | pending_pane_action = PANE_ACTION_NAV_DOWN |
| 386 | return |
| 387 | |
| 388 | end select |
| 389 | end if |
| 390 | |
| 391 | ! Pane navigation with vim keys: Super/Cmd + hjkl only (not Ctrl) |
| 392 | ! This allows Ctrl+L (clear), Ctrl+H, etc. to pass through to the shell |
| 393 | if (iand(mods, GLFW_MOD_SUPER) /= 0 .and. iand(mods, GLFW_MOD_CONTROL) == 0) then |
| 394 | select case (key) |
| 395 | case (GLFW_KEY_H) |
| 396 | pending_pane_action = PANE_ACTION_NAV_LEFT |
| 397 | return |
| 398 | case (GLFW_KEY_L) |
| 399 | pending_pane_action = PANE_ACTION_NAV_RIGHT |
| 400 | return |
| 401 | case (GLFW_KEY_K) |
| 402 | pending_pane_action = PANE_ACTION_NAV_UP |
| 403 | return |
| 404 | case (GLFW_KEY_J) |
| 405 | pending_pane_action = PANE_ACTION_NAV_DOWN |
| 406 | return |
| 407 | end select |
| 408 | end if |
| 409 | |
| 410 | ! Handle Ctrl combinations (these don't trigger char_callback) |
| 411 | if (iand(mods, GLFW_MOD_CONTROL) /= 0) then |
| 412 | if (key >= GLFW_KEY_A .and. key <= GLFW_KEY_Z) then |
| 413 | ! Ctrl+A through Ctrl+Z = 0x01-0x1A |
| 414 | seq(1:1) = char(key - GLFW_KEY_A + 1) |
| 415 | call pty_write(active_pty, seq, 1) |
| 416 | return |
| 417 | end if |
| 418 | end if |
| 419 | |
| 420 | ! Handle special keys |
| 421 | seq_len = 0 |
| 422 | select case (key) |
| 423 | case (GLFW_KEY_ENTER) |
| 424 | seq(1:1) = char(13) ! CR |
| 425 | seq_len = 1 |
| 426 | |
| 427 | case (GLFW_KEY_TAB) |
| 428 | if (iand(mods, GLFW_MOD_SHIFT) /= 0) then |
| 429 | ! Shift+Tab = CSI Z |
| 430 | seq = char(27) // '[Z' |
| 431 | seq_len = 3 |
| 432 | else |
| 433 | seq(1:1) = char(9) ! Tab |
| 434 | seq_len = 1 |
| 435 | end if |
| 436 | |
| 437 | case (GLFW_KEY_BACKSPACE) |
| 438 | seq(1:1) = char(127) ! DEL (most terminals expect this) |
| 439 | seq_len = 1 |
| 440 | |
| 441 | case (GLFW_KEY_UP) |
| 442 | call build_arrow_seq(seq, seq_len, 'A', mods) |
| 443 | |
| 444 | case (GLFW_KEY_DOWN) |
| 445 | call build_arrow_seq(seq, seq_len, 'B', mods) |
| 446 | |
| 447 | case (GLFW_KEY_RIGHT) |
| 448 | call build_arrow_seq(seq, seq_len, 'C', mods) |
| 449 | |
| 450 | case (GLFW_KEY_LEFT) |
| 451 | call build_arrow_seq(seq, seq_len, 'D', mods) |
| 452 | |
| 453 | case (GLFW_KEY_HOME) |
| 454 | call build_tilde_seq(seq, seq_len, 1, mods) |
| 455 | |
| 456 | case (GLFW_KEY_END) |
| 457 | call build_tilde_seq(seq, seq_len, 4, mods) |
| 458 | |
| 459 | case (GLFW_KEY_INSERT) |
| 460 | call build_tilde_seq(seq, seq_len, 2, mods) |
| 461 | |
| 462 | case (GLFW_KEY_DELETE) |
| 463 | call build_tilde_seq(seq, seq_len, 3, mods) |
| 464 | |
| 465 | case (GLFW_KEY_PAGE_UP) |
| 466 | call build_tilde_seq(seq, seq_len, 5, mods) |
| 467 | |
| 468 | case (GLFW_KEY_PAGE_DOWN) |
| 469 | call build_tilde_seq(seq, seq_len, 6, mods) |
| 470 | |
| 471 | case (GLFW_KEY_F1) |
| 472 | call build_fkey_seq(seq, seq_len, 11, mods) |
| 473 | case (GLFW_KEY_F2) |
| 474 | call build_fkey_seq(seq, seq_len, 12, mods) |
| 475 | case (GLFW_KEY_F3) |
| 476 | call build_fkey_seq(seq, seq_len, 13, mods) |
| 477 | case (GLFW_KEY_F4) |
| 478 | call build_fkey_seq(seq, seq_len, 14, mods) |
| 479 | case (GLFW_KEY_F5) |
| 480 | call build_fkey_seq(seq, seq_len, 15, mods) |
| 481 | case (GLFW_KEY_F6) |
| 482 | call build_fkey_seq(seq, seq_len, 17, mods) |
| 483 | case (GLFW_KEY_F7) |
| 484 | call build_fkey_seq(seq, seq_len, 18, mods) |
| 485 | case (GLFW_KEY_F8) |
| 486 | call build_fkey_seq(seq, seq_len, 19, mods) |
| 487 | case (GLFW_KEY_F9) |
| 488 | call build_fkey_seq(seq, seq_len, 20, mods) |
| 489 | case (GLFW_KEY_F10) |
| 490 | call build_fkey_seq(seq, seq_len, 21, mods) |
| 491 | case (GLFW_KEY_F11) |
| 492 | call build_fkey_seq(seq, seq_len, 23, mods) |
| 493 | case (GLFW_KEY_F12) |
| 494 | call build_fkey_seq(seq, seq_len, 24, mods) |
| 495 | end select |
| 496 | |
| 497 | if (seq_len > 0) then |
| 498 | call pty_write(active_pty, seq, seq_len) |
| 499 | end if |
| 500 | end subroutine key_callback |
| 501 | |
| 502 | ! Callback: handle character input (regular text) |
| 503 | subroutine char_callback(window, codepoint) bind(C) |
| 504 | type(c_ptr), value :: window |
| 505 | integer(c_int), value :: codepoint |
| 506 | character(len=4) :: utf8 |
| 507 | integer :: utf8_len |
| 508 | |
| 509 | if (.not. associated(active_pty)) return |
| 510 | |
| 511 | ! Convert Unicode codepoint to UTF-8 |
| 512 | call codepoint_to_utf8(codepoint, utf8, utf8_len) |
| 513 | |
| 514 | if (utf8_len > 0) then |
| 515 | call pty_write(active_pty, utf8, utf8_len) |
| 516 | end if |
| 517 | end subroutine char_callback |
| 518 | |
| 519 | ! Build arrow key escape sequence |
| 520 | subroutine build_arrow_seq(seq, seq_len, letter, mods) |
| 521 | character(len=*), intent(out) :: seq |
| 522 | integer, intent(out) :: seq_len |
| 523 | character(len=1), intent(in) :: letter |
| 524 | integer(c_int), intent(in) :: mods |
| 525 | integer :: mod_num |
| 526 | |
| 527 | mod_num = get_modifier_num(mods) |
| 528 | |
| 529 | if (mod_num == 0) then |
| 530 | ! ESC [ <letter> |
| 531 | seq = char(27) // '[' // letter |
| 532 | seq_len = 3 |
| 533 | else |
| 534 | ! ESC [ 1 ; <mod> <letter> |
| 535 | seq = char(27) // '[1;' // char(mod_num + ichar('0')) // letter |
| 536 | seq_len = 6 |
| 537 | end if |
| 538 | end subroutine build_arrow_seq |
| 539 | |
| 540 | ! Build tilde-terminated escape sequence (Home, End, Insert, Delete, PgUp, PgDn) |
| 541 | subroutine build_tilde_seq(seq, seq_len, code, mods) |
| 542 | character(len=*), intent(out) :: seq |
| 543 | integer, intent(out) :: seq_len |
| 544 | integer, intent(in) :: code |
| 545 | integer(c_int), intent(in) :: mods |
| 546 | integer :: mod_num |
| 547 | character(len=2) :: code_str |
| 548 | |
| 549 | mod_num = get_modifier_num(mods) |
| 550 | write(code_str, '(I1)') code |
| 551 | |
| 552 | if (mod_num == 0) then |
| 553 | ! ESC [ <code> ~ |
| 554 | seq = char(27) // '[' // trim(code_str) // '~' |
| 555 | seq_len = 4 |
| 556 | else |
| 557 | ! ESC [ <code> ; <mod> ~ |
| 558 | seq = char(27) // '[' // trim(code_str) // ';' // char(mod_num + ichar('0')) // '~' |
| 559 | seq_len = 6 |
| 560 | end if |
| 561 | end subroutine build_tilde_seq |
| 562 | |
| 563 | ! Build function key escape sequence |
| 564 | subroutine build_fkey_seq(seq, seq_len, code, mods) |
| 565 | character(len=*), intent(out) :: seq |
| 566 | integer, intent(out) :: seq_len |
| 567 | integer, intent(in) :: code |
| 568 | integer(c_int), intent(in) :: mods |
| 569 | integer :: mod_num |
| 570 | character(len=2) :: code_str |
| 571 | |
| 572 | mod_num = get_modifier_num(mods) |
| 573 | write(code_str, '(I2)') code |
| 574 | |
| 575 | if (mod_num == 0) then |
| 576 | ! ESC [ <code> ~ |
| 577 | seq = char(27) // '[' // trim(code_str) // '~' |
| 578 | seq_len = 5 |
| 579 | else |
| 580 | ! ESC [ <code> ; <mod> ~ |
| 581 | seq = char(27) // '[' // trim(code_str) // ';' // char(mod_num + ichar('0')) // '~' |
| 582 | seq_len = 7 |
| 583 | end if |
| 584 | end subroutine build_fkey_seq |
| 585 | |
| 586 | ! Convert GLFW modifier bits to xterm modifier number |
| 587 | function get_modifier_num(mods) result(mod_num) |
| 588 | integer(c_int), intent(in) :: mods |
| 589 | integer :: mod_num |
| 590 | |
| 591 | mod_num = 0 |
| 592 | if (iand(mods, GLFW_MOD_SHIFT) /= 0) mod_num = mod_num + 1 |
| 593 | if (iand(mods, GLFW_MOD_ALT) /= 0) mod_num = mod_num + 2 |
| 594 | if (iand(mods, GLFW_MOD_CONTROL) /= 0) mod_num = mod_num + 4 |
| 595 | |
| 596 | ! xterm encoding: modifier = 1 + shift + alt*2 + ctrl*4 |
| 597 | if (mod_num > 0) mod_num = mod_num + 1 |
| 598 | end function get_modifier_num |
| 599 | |
| 600 | ! Convert Unicode codepoint to UTF-8 bytes |
| 601 | subroutine codepoint_to_utf8(cp, utf8, length) |
| 602 | integer(c_int), intent(in) :: cp |
| 603 | character(len=*), intent(out) :: utf8 |
| 604 | integer, intent(out) :: length |
| 605 | |
| 606 | if (cp < 128) then |
| 607 | ! ASCII |
| 608 | utf8(1:1) = char(cp) |
| 609 | length = 1 |
| 610 | else if (cp < 2048) then |
| 611 | ! 2-byte UTF-8 |
| 612 | utf8(1:1) = char(ior(192, ishft(cp, -6))) |
| 613 | utf8(2:2) = char(ior(128, iand(cp, 63))) |
| 614 | length = 2 |
| 615 | else if (cp < 65536) then |
| 616 | ! 3-byte UTF-8 |
| 617 | utf8(1:1) = char(ior(224, ishft(cp, -12))) |
| 618 | utf8(2:2) = char(ior(128, iand(ishft(cp, -6), 63))) |
| 619 | utf8(3:3) = char(ior(128, iand(cp, 63))) |
| 620 | length = 3 |
| 621 | else if (cp < 1114112) then |
| 622 | ! 4-byte UTF-8 |
| 623 | utf8(1:1) = char(ior(240, ishft(cp, -18))) |
| 624 | utf8(2:2) = char(ior(128, iand(ishft(cp, -12), 63))) |
| 625 | utf8(3:3) = char(ior(128, iand(ishft(cp, -6), 63))) |
| 626 | utf8(4:4) = char(ior(128, iand(cp, 63))) |
| 627 | length = 4 |
| 628 | else |
| 629 | ! Invalid codepoint |
| 630 | length = 0 |
| 631 | end if |
| 632 | end subroutine codepoint_to_utf8 |
| 633 | |
| 634 | ! Callback: handle GLFW errors |
| 635 | subroutine error_callback(error_code, description) bind(C) |
| 636 | integer(c_int), value :: error_code |
| 637 | type(c_ptr), value :: description |
| 638 | |
| 639 | print *, "GLFW Error ", error_code |
| 640 | end subroutine error_callback |
| 641 | |
| 642 | ! Callback: handle mouse scroll wheel |
| 643 | subroutine scroll_callback(window, xoffset, yoffset) bind(C) |
| 644 | type(c_ptr), value :: window |
| 645 | real(c_double), value :: xoffset, yoffset |
| 646 | integer :: scroll_lines |
| 647 | |
| 648 | if (.not. associated(active_term)) return |
| 649 | |
| 650 | ! Convert scroll amount to lines (typically 3 lines per notch) |
| 651 | scroll_lines = nint(yoffset * 3.0d0) |
| 652 | |
| 653 | ! Positive yoffset = scroll up (back in history) |
| 654 | call terminal_scroll_view(active_term, scroll_lines) |
| 655 | end subroutine scroll_callback |
| 656 | |
| 657 | ! Set window title |
| 658 | subroutine window_set_title(win, title) |
| 659 | type(window_t), intent(in) :: win |
| 660 | character(len=*), intent(in) :: title |
| 661 | character(len=257) :: c_title |
| 662 | |
| 663 | if (.not. c_associated(win%handle)) return |
| 664 | |
| 665 | c_title = trim(title) // c_null_char |
| 666 | call glfwSetWindowTitle(win%handle, c_title) |
| 667 | end subroutine window_set_title |
| 668 | |
| 669 | ! Enable background blur (macOS only, no-op on other platforms) |
| 670 | subroutine window_set_blur(win, enable) |
| 671 | type(window_t), intent(in) :: win |
| 672 | logical, intent(in) :: enable |
| 673 | |
| 674 | if (.not. c_associated(win%handle)) return |
| 675 | |
| 676 | if (enable) then |
| 677 | call fortty_set_window_blur_c(win%handle, 1_c_int) |
| 678 | else |
| 679 | call fortty_set_window_blur_c(win%handle, 0_c_int) |
| 680 | end if |
| 681 | end subroutine window_set_blur |
| 682 | |
| 683 | ! Set cell dimensions for mouse coordinate conversion |
| 684 | subroutine window_set_cell_size(w, h) |
| 685 | integer, intent(in) :: w, h |
| 686 | |
| 687 | cell_width = w |
| 688 | cell_height = h |
| 689 | end subroutine window_set_cell_size |
| 690 | |
| 691 | ! Get selection state (for rendering) |
| 692 | function window_get_selection() result(sel) |
| 693 | type(selection_t) :: sel |
| 694 | |
| 695 | sel = active_selection |
| 696 | end function window_get_selection |
| 697 | |
| 698 | ! Set clipboard content |
| 699 | subroutine window_clipboard_set(win, text) |
| 700 | type(window_t), intent(in) :: win |
| 701 | character(len=*), intent(in) :: text |
| 702 | character(len=4097) :: c_text |
| 703 | |
| 704 | if (.not. c_associated(win%handle)) return |
| 705 | if (len_trim(text) == 0) return |
| 706 | |
| 707 | c_text = trim(text) // c_null_char |
| 708 | call glfwSetClipboardString(win%handle, c_text) |
| 709 | end subroutine window_clipboard_set |
| 710 | |
| 711 | ! Get clipboard content |
| 712 | function window_clipboard_get(win) result(text) |
| 713 | type(window_t), intent(in) :: win |
| 714 | character(len=4096) :: text |
| 715 | type(c_ptr) :: clip_ptr |
| 716 | character(len=1), pointer :: chars(:) |
| 717 | integer :: i, length |
| 718 | |
| 719 | text = '' |
| 720 | if (.not. c_associated(win%handle)) return |
| 721 | |
| 722 | clip_ptr = glfwGetClipboardString(win%handle) |
| 723 | if (.not. c_associated(clip_ptr)) return |
| 724 | |
| 725 | ! Convert C string to Fortran string |
| 726 | call c_f_pointer(clip_ptr, chars, [4096]) |
| 727 | length = 0 |
| 728 | do i = 1, 4096 |
| 729 | if (chars(i) == c_null_char) exit |
| 730 | length = i |
| 731 | end do |
| 732 | |
| 733 | do i = 1, min(length, 4096) |
| 734 | text(i:i) = chars(i) |
| 735 | end do |
| 736 | end function window_clipboard_get |
| 737 | |
| 738 | ! Callback: handle mouse button events |
| 739 | subroutine mouse_button_callback(window, button, action, mods) bind(C) |
| 740 | type(c_ptr), value :: window |
| 741 | integer(c_int), value :: button, action, mods |
| 742 | real(c_double) :: xpos, ypos |
| 743 | integer :: col, row |
| 744 | |
| 745 | ! Only handle left mouse button for selection |
| 746 | if (button /= GLFW_MOUSE_BUTTON_LEFT) return |
| 747 | |
| 748 | call glfwGetCursorPos(window, xpos, ypos) |
| 749 | |
| 750 | ! Convert pixel position to terminal cell coordinates (1-based) |
| 751 | col = int(xpos / cell_width) + 1 |
| 752 | row = int(ypos / cell_height) + 1 |
| 753 | |
| 754 | ! Clamp to valid range |
| 755 | if (associated(active_term)) then |
| 756 | if (col < 1) col = 1 |
| 757 | if (col > active_term%cols) col = active_term%cols |
| 758 | if (row < 1) row = 1 |
| 759 | if (row > active_term%rows) row = active_term%rows |
| 760 | end if |
| 761 | |
| 762 | if (action == GLFW_PRESS) then |
| 763 | call selection_start(active_selection, row, col) |
| 764 | else if (action == GLFW_RELEASE) then |
| 765 | call selection_end(active_selection) |
| 766 | ! Copy selection to clipboard if active |
| 767 | if (selection_is_active(active_selection)) then |
| 768 | call copy_selection_to_clipboard(window) |
| 769 | end if |
| 770 | end if |
| 771 | end subroutine mouse_button_callback |
| 772 | |
| 773 | ! Callback: handle cursor position changes |
| 774 | subroutine cursor_pos_callback(window, xpos, ypos) bind(C) |
| 775 | type(c_ptr), value :: window |
| 776 | real(c_double), value :: xpos, ypos |
| 777 | integer :: col, row |
| 778 | |
| 779 | ! Only update if actively selecting |
| 780 | if (.not. active_selection%selecting) return |
| 781 | |
| 782 | ! Convert pixel position to terminal cell coordinates (1-based) |
| 783 | col = int(xpos / cell_width) + 1 |
| 784 | row = int(ypos / cell_height) + 1 |
| 785 | |
| 786 | ! Clamp to valid range |
| 787 | if (associated(active_term)) then |
| 788 | if (col < 1) col = 1 |
| 789 | if (col > active_term%cols) col = active_term%cols |
| 790 | if (row < 1) row = 1 |
| 791 | if (row > active_term%rows) row = active_term%rows |
| 792 | end if |
| 793 | |
| 794 | call selection_update(active_selection, row, col) |
| 795 | end subroutine cursor_pos_callback |
| 796 | |
| 797 | ! Copy selection to clipboard |
| 798 | subroutine copy_selection_to_clipboard(window) |
| 799 | use screen_mod |
| 800 | use cell_mod |
| 801 | type(c_ptr), intent(in) :: window |
| 802 | type(screen_t), pointer :: scr |
| 803 | type(cell_t) :: cell |
| 804 | character(len=4096) :: text |
| 805 | character(len=4) :: utf8 |
| 806 | integer :: r1, c1, r2, c2, row, col, pos, utf8_len |
| 807 | |
| 808 | if (.not. associated(active_term)) return |
| 809 | if (.not. selection_is_active(active_selection)) return |
| 810 | |
| 811 | scr => terminal_active_screen(active_term) |
| 812 | call selection_get_bounds(active_selection, r1, c1, r2, c2) |
| 813 | |
| 814 | text = '' |
| 815 | pos = 1 |
| 816 | |
| 817 | do row = r1, r2 |
| 818 | do col = 1, scr%cols |
| 819 | ! Check if this cell is in selection |
| 820 | if (.not. selection_contains(active_selection, row, col)) cycle |
| 821 | |
| 822 | cell = screen_get_cell(scr, row, col) |
| 823 | |
| 824 | ! Convert codepoint to UTF-8 |
| 825 | if (cell%codepoint >= 32 .and. cell%codepoint < 1114112) then |
| 826 | call codepoint_to_utf8(cell%codepoint, utf8, utf8_len) |
| 827 | if (pos + utf8_len - 1 <= 4096) then |
| 828 | text(pos:pos+utf8_len-1) = utf8(1:utf8_len) |
| 829 | pos = pos + utf8_len |
| 830 | end if |
| 831 | end if |
| 832 | end do |
| 833 | |
| 834 | ! Add newline between rows (except last row) |
| 835 | if (row < r2 .and. pos < 4096) then |
| 836 | text(pos:pos) = char(10) |
| 837 | pos = pos + 1 |
| 838 | end if |
| 839 | end do |
| 840 | |
| 841 | ! Set clipboard |
| 842 | if (pos > 1) then |
| 843 | call glfwSetClipboardString(window, trim(text(1:pos-1)) // c_null_char) |
| 844 | end if |
| 845 | end subroutine copy_selection_to_clipboard |
| 846 | |
| 847 | ! Handle paste from clipboard |
| 848 | subroutine handle_paste(window) |
| 849 | type(c_ptr), intent(in) :: window |
| 850 | type(c_ptr) :: clip_ptr |
| 851 | character(len=1), pointer :: chars(:) |
| 852 | integer :: i, length |
| 853 | |
| 854 | if (.not. associated(active_pty)) return |
| 855 | |
| 856 | clip_ptr = glfwGetClipboardString(window) |
| 857 | if (.not. c_associated(clip_ptr)) return |
| 858 | |
| 859 | ! Find length of C string |
| 860 | call c_f_pointer(clip_ptr, chars, [4096]) |
| 861 | length = 0 |
| 862 | do i = 1, 4096 |
| 863 | if (chars(i) == c_null_char) exit |
| 864 | length = i |
| 865 | end do |
| 866 | |
| 867 | ! Write to PTY |
| 868 | if (length > 0) then |
| 869 | block |
| 870 | character(len=4096) :: paste_text |
| 871 | integer :: j |
| 872 | paste_text = '' |
| 873 | do j = 1, length |
| 874 | paste_text(j:j) = chars(j) |
| 875 | end do |
| 876 | call pty_write(active_pty, paste_text, length) |
| 877 | end block |
| 878 | end if |
| 879 | end subroutine handle_paste |
| 880 | |
| 881 | ! Get pending font size delta (returns 0 if none) |
| 882 | function window_get_font_delta() result(delta) |
| 883 | integer :: delta |
| 884 | delta = pending_font_delta |
| 885 | end function window_get_font_delta |
| 886 | |
| 887 | ! Clear pending font size delta |
| 888 | subroutine window_clear_font_delta() |
| 889 | pending_font_delta = 0 |
| 890 | end subroutine window_clear_font_delta |
| 891 | |
| 892 | ! Set current font size (for tracking) |
| 893 | subroutine window_set_font_size(size) |
| 894 | integer, intent(in) :: size |
| 895 | current_font_size = size |
| 896 | end subroutine window_set_font_size |
| 897 | |
| 898 | ! Set the render callback for live resize support |
| 899 | subroutine window_set_render_callback(callback) |
| 900 | procedure(render_callback_interface) :: callback |
| 901 | |
| 902 | render_callback => callback |
| 903 | end subroutine window_set_render_callback |
| 904 | |
| 905 | ! Check if window is currently resizing (for main loop optimization) |
| 906 | function window_is_resizing() result(resizing) |
| 907 | logical :: resizing |
| 908 | resizing = is_resizing |
| 909 | is_resizing = .false. ! Clear the flag after reading |
| 910 | end function window_is_resizing |
| 911 | |
| 912 | ! Get pending tab action (returns 0 if none) |
| 913 | function window_get_tab_action() result(action) |
| 914 | integer :: action |
| 915 | action = pending_tab_action |
| 916 | end function window_get_tab_action |
| 917 | |
| 918 | ! Clear pending tab action |
| 919 | subroutine window_clear_tab_action() |
| 920 | pending_tab_action = TAB_ACTION_NONE |
| 921 | end subroutine window_clear_tab_action |
| 922 | |
| 923 | ! Get pending pane action (returns 0 if none) |
| 924 | function window_get_pane_action() result(action) |
| 925 | integer :: action |
| 926 | action = pending_pane_action |
| 927 | end function window_get_pane_action |
| 928 | |
| 929 | ! Clear pending pane action |
| 930 | subroutine window_clear_pane_action() |
| 931 | pending_pane_action = PANE_ACTION_NONE |
| 932 | end subroutine window_clear_pane_action |
| 933 | |
| 934 | end module window_mod |
| 935 |