| 1 | /* /////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: win_gtk.c |
| 3 | // Purpose: Native GTK+ widget for wxWindows, based on GtkLayout and |
| 4 | // GtkFixed. It makes use of the gravity window property and |
| 5 | // therefore does not work with GTK 1.0. |
| 6 | // Author: Robert Roebling |
| 7 | // Id: $Id$ |
| 8 | // Copyright: (c) 1998 Robert Roebling |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////// */ |
| 11 | |
| 12 | #ifdef VMS |
| 13 | #define XCheckIfEvent XCHECKIFEVENT |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/setup.h" |
| 17 | #include "wx/gtk/win_gtk.h" |
| 18 | #include "gtk/gtksignal.h" |
| 19 | #include "gtk/gtkprivate.h" |
| 20 | #include "gdk/gdkx.h" |
| 21 | |
| 22 | #ifdef __cplusplus |
| 23 | extern "C" { |
| 24 | #endif /* __cplusplus */ |
| 25 | |
| 26 | #include <X11/Xlib.h> |
| 27 | #include <X11/Xutil.h> |
| 28 | #include <X11/Xatom.h> |
| 29 | |
| 30 | #define IS_ONSCREEN(x,y) ((x >= G_MINSHORT) && (x <= G_MAXSHORT) && \ |
| 31 | (y >= G_MINSHORT) && (y <= G_MAXSHORT)) |
| 32 | |
| 33 | typedef struct _GtkPizzaAdjData GtkPizzaAdjData; |
| 34 | |
| 35 | struct _GtkPizzaAdjData |
| 36 | { |
| 37 | gint dx; |
| 38 | gint dy; |
| 39 | }; |
| 40 | |
| 41 | static void gtk_pizza_class_init (GtkPizzaClass *klass); |
| 42 | static void gtk_pizza_init (GtkPizza *pizza); |
| 43 | |
| 44 | static void gtk_pizza_realize (GtkWidget *widget); |
| 45 | static void gtk_pizza_unrealize (GtkWidget *widget); |
| 46 | |
| 47 | static void gtk_pizza_map (GtkWidget *widget); |
| 48 | |
| 49 | static void gtk_pizza_size_request (GtkWidget *widget, |
| 50 | GtkRequisition *requisition); |
| 51 | static void gtk_pizza_size_allocate (GtkWidget *widget, |
| 52 | GtkAllocation *allocation); |
| 53 | static void gtk_pizza_draw (GtkWidget *widget, |
| 54 | GdkRectangle *area); |
| 55 | static gint gtk_pizza_expose (GtkWidget *widget, |
| 56 | GdkEventExpose *event); |
| 57 | static void gtk_pizza_add (GtkContainer *container, |
| 58 | GtkWidget *widget); |
| 59 | static void gtk_pizza_remove (GtkContainer *container, |
| 60 | GtkWidget *widget); |
| 61 | static void gtk_pizza_forall (GtkContainer *container, |
| 62 | gboolean include_internals, |
| 63 | GtkCallback callback, |
| 64 | gpointer callback_data); |
| 65 | |
| 66 | static void gtk_pizza_position_child (GtkPizza *pizza, |
| 67 | GtkPizzaChild *child); |
| 68 | static void gtk_pizza_allocate_child (GtkPizza *pizza, |
| 69 | GtkPizzaChild *child); |
| 70 | static void gtk_pizza_position_children (GtkPizza *pizza); |
| 71 | |
| 72 | static void gtk_pizza_adjust_allocations_recurse (GtkWidget *widget, |
| 73 | gpointer cb_data); |
| 74 | static void gtk_pizza_adjust_allocations (GtkPizza *pizza, |
| 75 | gint dx, |
| 76 | gint dy); |
| 77 | |
| 78 | |
| 79 | /* unused */ |
| 80 | #if 0 |
| 81 | static void gtk_pizza_expose_area (GtkPizza *pizza, |
| 82 | gint x, |
| 83 | gint y, |
| 84 | gint width, |
| 85 | gint height); |
| 86 | static void gtk_pizza_adjustment_changed (GtkAdjustment *adjustment, |
| 87 | GtkPizza *pizza); |
| 88 | #endif |
| 89 | |
| 90 | static GdkFilterReturn gtk_pizza_filter (GdkXEvent *gdk_xevent, |
| 91 | GdkEvent *event, |
| 92 | gpointer data); |
| 93 | static GdkFilterReturn gtk_pizza_main_filter (GdkXEvent *gdk_xevent, |
| 94 | GdkEvent *event, |
| 95 | gpointer data); |
| 96 | |
| 97 | |
| 98 | static GtkType gtk_pizza_child_type (GtkContainer *container); |
| 99 | |
| 100 | static void gtk_pizza_scroll_set_adjustments (GtkPizza *pizza, |
| 101 | GtkAdjustment *hadj, |
| 102 | GtkAdjustment *vadj); |
| 103 | |
| 104 | |
| 105 | static GtkContainerClass *parent_class = NULL; |
| 106 | static gboolean gravity_works; |
| 107 | |
| 108 | guint |
| 109 | gtk_pizza_get_type () |
| 110 | { |
| 111 | static guint pizza_type = 0; |
| 112 | |
| 113 | if (!pizza_type) |
| 114 | { |
| 115 | GtkTypeInfo pizza_info = |
| 116 | { |
| 117 | "GtkPizza", |
| 118 | sizeof (GtkPizza), |
| 119 | sizeof (GtkPizzaClass), |
| 120 | (GtkClassInitFunc) gtk_pizza_class_init, |
| 121 | (GtkObjectInitFunc) gtk_pizza_init, |
| 122 | /* reserved_1 */ NULL, |
| 123 | /* reserved_2 */ NULL, |
| 124 | (GtkClassInitFunc) NULL, |
| 125 | }; |
| 126 | pizza_type = gtk_type_unique (gtk_container_get_type (), &pizza_info); |
| 127 | } |
| 128 | |
| 129 | return pizza_type; |
| 130 | } |
| 131 | |
| 132 | static void |
| 133 | gtk_pizza_class_init (GtkPizzaClass *klass) |
| 134 | { |
| 135 | GtkObjectClass *object_class; |
| 136 | GtkWidgetClass *widget_class; |
| 137 | GtkContainerClass *container_class; |
| 138 | |
| 139 | object_class = (GtkObjectClass*) klass; |
| 140 | widget_class = (GtkWidgetClass*) klass; |
| 141 | container_class = (GtkContainerClass*) klass; |
| 142 | parent_class = gtk_type_class (GTK_TYPE_CONTAINER); |
| 143 | |
| 144 | widget_class->map = gtk_pizza_map; |
| 145 | widget_class->realize = gtk_pizza_realize; |
| 146 | widget_class->unrealize = gtk_pizza_unrealize; |
| 147 | widget_class->size_request = gtk_pizza_size_request; |
| 148 | widget_class->size_allocate = gtk_pizza_size_allocate; |
| 149 | widget_class->draw = gtk_pizza_draw; |
| 150 | widget_class->expose_event = gtk_pizza_expose; |
| 151 | |
| 152 | container_class->add = gtk_pizza_add; |
| 153 | container_class->remove = gtk_pizza_remove; |
| 154 | container_class->forall = gtk_pizza_forall; |
| 155 | |
| 156 | container_class->child_type = gtk_pizza_child_type; |
| 157 | |
| 158 | klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments; |
| 159 | |
| 160 | widget_class->set_scroll_adjustments_signal = |
| 161 | gtk_signal_new ("set_scroll_adjustments", |
| 162 | GTK_RUN_LAST, |
| 163 | |
| 164 | #ifdef __WXGTK20__ |
| 165 | GTK_CLASS_TYPE(object_class), |
| 166 | #else |
| 167 | object_class->type, |
| 168 | #endif |
| 169 | GTK_SIGNAL_OFFSET (GtkPizzaClass, set_scroll_adjustments), |
| 170 | gtk_marshal_NONE__POINTER_POINTER, |
| 171 | GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); |
| 172 | } |
| 173 | |
| 174 | static GtkType |
| 175 | gtk_pizza_child_type (GtkContainer *container) |
| 176 | { |
| 177 | return GTK_TYPE_WIDGET; |
| 178 | } |
| 179 | |
| 180 | static void |
| 181 | gtk_pizza_init (GtkPizza *pizza) |
| 182 | { |
| 183 | GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW); |
| 184 | |
| 185 | pizza->shadow_type = GTK_MYSHADOW_NONE; |
| 186 | |
| 187 | pizza->children = NULL; |
| 188 | |
| 189 | pizza->width = 20; |
| 190 | pizza->height = 20; |
| 191 | |
| 192 | pizza->bin_window = NULL; |
| 193 | |
| 194 | pizza->xoffset = 0; |
| 195 | pizza->yoffset = 0; |
| 196 | |
| 197 | pizza->configure_serial = 0; |
| 198 | pizza->scroll_x = 0; |
| 199 | pizza->scroll_y = 0; |
| 200 | pizza->visibility = GDK_VISIBILITY_PARTIAL; |
| 201 | |
| 202 | pizza->clear_on_draw = TRUE; |
| 203 | pizza->use_filter = TRUE; |
| 204 | pizza->external_expose = FALSE; |
| 205 | } |
| 206 | |
| 207 | GtkWidget* |
| 208 | gtk_pizza_new () |
| 209 | { |
| 210 | GtkPizza *pizza; |
| 211 | |
| 212 | pizza = gtk_type_new (gtk_pizza_get_type ()); |
| 213 | |
| 214 | return GTK_WIDGET (pizza); |
| 215 | } |
| 216 | |
| 217 | static void |
| 218 | gtk_pizza_scroll_set_adjustments (GtkPizza *pizza, |
| 219 | GtkAdjustment *hadj, |
| 220 | GtkAdjustment *vadj) |
| 221 | { |
| 222 | /* We handle scrolling in the wxScrolledWindow, not here. */ |
| 223 | } |
| 224 | |
| 225 | void |
| 226 | gtk_pizza_set_shadow_type (GtkPizza *pizza, |
| 227 | GtkMyShadowType type) |
| 228 | { |
| 229 | g_return_if_fail (pizza != NULL); |
| 230 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 231 | |
| 232 | if ((GtkMyShadowType) pizza->shadow_type != type) |
| 233 | { |
| 234 | pizza->shadow_type = type; |
| 235 | |
| 236 | if (GTK_WIDGET_VISIBLE (pizza)) |
| 237 | { |
| 238 | gtk_widget_size_allocate (GTK_WIDGET (pizza), &(GTK_WIDGET (pizza)->allocation)); |
| 239 | gtk_widget_queue_draw (GTK_WIDGET (pizza)); |
| 240 | } |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | void |
| 245 | gtk_pizza_set_clear (GtkPizza *pizza, |
| 246 | gboolean clear) |
| 247 | { |
| 248 | g_return_if_fail (pizza != NULL); |
| 249 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 250 | |
| 251 | pizza->clear_on_draw = clear; |
| 252 | } |
| 253 | |
| 254 | void |
| 255 | gtk_pizza_set_filter (GtkPizza *pizza, |
| 256 | gboolean use) |
| 257 | { |
| 258 | g_return_if_fail (pizza != NULL); |
| 259 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 260 | |
| 261 | pizza->use_filter = use; |
| 262 | } |
| 263 | |
| 264 | void |
| 265 | gtk_pizza_set_external (GtkPizza *pizza, |
| 266 | gboolean expose) |
| 267 | { |
| 268 | g_return_if_fail (pizza != NULL); |
| 269 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 270 | |
| 271 | pizza->external_expose = expose; |
| 272 | } |
| 273 | |
| 274 | void |
| 275 | gtk_pizza_put (GtkPizza *pizza, |
| 276 | GtkWidget *widget, |
| 277 | gint x, |
| 278 | gint y, |
| 279 | gint width, |
| 280 | gint height) |
| 281 | { |
| 282 | GtkPizzaChild *child_info; |
| 283 | |
| 284 | g_return_if_fail (pizza != NULL); |
| 285 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 286 | g_return_if_fail (widget != NULL); |
| 287 | |
| 288 | child_info = g_new (GtkPizzaChild, 1); |
| 289 | |
| 290 | child_info->widget = widget; |
| 291 | child_info->x = x; |
| 292 | child_info->y = y; |
| 293 | child_info->width = width; |
| 294 | child_info->height = height; |
| 295 | |
| 296 | pizza->children = g_list_append (pizza->children, child_info); |
| 297 | |
| 298 | gtk_widget_set_parent (widget, GTK_WIDGET (pizza)); |
| 299 | |
| 300 | if (GTK_WIDGET_REALIZED (pizza)) |
| 301 | gtk_widget_set_parent_window (widget, pizza->bin_window); |
| 302 | |
| 303 | #ifndef __WXGTK20__ /* FIXME? */ |
| 304 | if (!IS_ONSCREEN (x, y)) |
| 305 | GTK_PRIVATE_SET_FLAG (widget, GTK_IS_OFFSCREEN); |
| 306 | #endif |
| 307 | |
| 308 | /* |
| 309 | if (GTK_WIDGET_REALIZED (pizza)) |
| 310 | gtk_widget_realize (widget); |
| 311 | */ |
| 312 | |
| 313 | gtk_widget_set_usize (widget, width, height); |
| 314 | |
| 315 | /* |
| 316 | if (GTK_WIDGET_VISIBLE (pizza) && GTK_WIDGET_VISIBLE (widget)) |
| 317 | { |
| 318 | if (GTK_WIDGET_MAPPED (pizza)) |
| 319 | gtk_widget_map (widget); |
| 320 | |
| 321 | gtk_widget_queue_resize (widget); |
| 322 | } |
| 323 | */ |
| 324 | } |
| 325 | |
| 326 | void |
| 327 | gtk_pizza_move (GtkPizza *pizza, |
| 328 | GtkWidget *widget, |
| 329 | gint x, |
| 330 | gint y) |
| 331 | { |
| 332 | GtkPizzaChild *child; |
| 333 | GList *children; |
| 334 | |
| 335 | g_return_if_fail (pizza != NULL); |
| 336 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 337 | g_return_if_fail (widget != NULL); |
| 338 | |
| 339 | children = pizza->children; |
| 340 | while (children) |
| 341 | { |
| 342 | child = children->data; |
| 343 | children = children->next; |
| 344 | |
| 345 | if (child->widget == widget) |
| 346 | { |
| 347 | if ((child->x == x) && (child->y == y)) |
| 348 | break; |
| 349 | |
| 350 | child->x = x; |
| 351 | child->y = y; |
| 352 | |
| 353 | if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza)) |
| 354 | gtk_widget_queue_resize (widget); |
| 355 | break; |
| 356 | } |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | void |
| 361 | gtk_pizza_resize (GtkPizza *pizza, |
| 362 | GtkWidget *widget, |
| 363 | gint width, |
| 364 | gint height) |
| 365 | { |
| 366 | GtkPizzaChild *child; |
| 367 | GList *children; |
| 368 | |
| 369 | g_return_if_fail (pizza != NULL); |
| 370 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 371 | g_return_if_fail (widget != NULL); |
| 372 | |
| 373 | children = pizza->children; |
| 374 | while (children) |
| 375 | { |
| 376 | child = children->data; |
| 377 | children = children->next; |
| 378 | |
| 379 | if (child->widget == widget) |
| 380 | { |
| 381 | if ((child->width == width) && (child->height == height)) |
| 382 | break; |
| 383 | |
| 384 | child->width = width; |
| 385 | child->height = height; |
| 386 | |
| 387 | gtk_widget_set_usize (widget, width, height); |
| 388 | |
| 389 | if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza)) |
| 390 | gtk_widget_queue_resize (widget); |
| 391 | break; |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | void |
| 397 | gtk_pizza_set_size (GtkPizza *pizza, |
| 398 | GtkWidget *widget, |
| 399 | gint x, |
| 400 | gint y, |
| 401 | gint width, |
| 402 | gint height) |
| 403 | { |
| 404 | GtkPizzaChild *child; |
| 405 | GList *children; |
| 406 | |
| 407 | g_return_if_fail (pizza != NULL); |
| 408 | g_return_if_fail (GTK_IS_PIZZA (pizza)); |
| 409 | g_return_if_fail (widget != NULL); |
| 410 | |
| 411 | children = pizza->children; |
| 412 | while (children) |
| 413 | { |
| 414 | child = children->data; |
| 415 | children = children->next; |
| 416 | |
| 417 | if (child->widget == widget) |
| 418 | { |
| 419 | if ((child->x == x) && |
| 420 | (child->y == y) && |
| 421 | (child->width == width) && |
| 422 | (child->height == height)) return; |
| 423 | |
| 424 | child->x = x; |
| 425 | child->y = y; |
| 426 | child->width = width; |
| 427 | child->height = height; |
| 428 | |
| 429 | gtk_widget_set_usize (widget, width, height); |
| 430 | |
| 431 | if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza)) |
| 432 | gtk_widget_queue_resize (widget); |
| 433 | |
| 434 | return; |
| 435 | } |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | gint |
| 440 | gtk_pizza_child_resized (GtkPizza *pizza, |
| 441 | GtkWidget *widget) |
| 442 | { |
| 443 | GtkPizzaChild *child; |
| 444 | GList *children; |
| 445 | |
| 446 | g_return_val_if_fail (pizza != NULL, FALSE); |
| 447 | g_return_val_if_fail (GTK_IS_PIZZA (pizza), FALSE); |
| 448 | g_return_val_if_fail (widget != NULL, FALSE); |
| 449 | |
| 450 | children = pizza->children; |
| 451 | while (children) |
| 452 | { |
| 453 | child = children->data; |
| 454 | children = children->next; |
| 455 | |
| 456 | if (child->widget == widget) |
| 457 | { |
| 458 | return ((child->width == widget->allocation.width) && |
| 459 | (child->height == widget->allocation.height)); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | return FALSE; |
| 464 | } |
| 465 | |
| 466 | static void |
| 467 | gtk_pizza_map (GtkWidget *widget) |
| 468 | { |
| 469 | GtkPizza *pizza; |
| 470 | GtkPizzaChild *child; |
| 471 | GList *children; |
| 472 | |
| 473 | g_return_if_fail (widget != NULL); |
| 474 | g_return_if_fail (GTK_IS_PIZZA (widget)); |
| 475 | |
| 476 | GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED); |
| 477 | pizza = GTK_PIZZA (widget); |
| 478 | |
| 479 | children = pizza->children; |
| 480 | while (children) |
| 481 | { |
| 482 | child = children->data; |
| 483 | children = children->next; |
| 484 | |
| 485 | if ( GTK_WIDGET_VISIBLE (child->widget) && |
| 486 | !GTK_WIDGET_MAPPED (child->widget) && |
| 487 | #ifdef __WXGTK20__ |
| 488 | TRUE) |
| 489 | #else |
| 490 | !GTK_WIDGET_IS_OFFSCREEN (child->widget)) |
| 491 | #endif |
| 492 | { |
| 493 | gtk_widget_map (child->widget); |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | gdk_window_show (widget->window); |
| 498 | gdk_window_show (pizza->bin_window); |
| 499 | } |
| 500 | |
| 501 | static void |
| 502 | gtk_pizza_realize (GtkWidget *widget) |
| 503 | { |
| 504 | GtkPizza *pizza; |
| 505 | GdkWindowAttr attributes; |
| 506 | gint attributes_mask; |
| 507 | GtkPizzaChild *child; |
| 508 | GList *children; |
| 509 | |
| 510 | g_return_if_fail (widget != NULL); |
| 511 | g_return_if_fail (GTK_IS_PIZZA (widget)); |
| 512 | |
| 513 | pizza = GTK_PIZZA (widget); |
| 514 | |
| 515 | GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); |
| 516 | |
| 517 | attributes.window_type = GDK_WINDOW_CHILD; |
| 518 | |
| 519 | attributes.x = widget->allocation.x; |
| 520 | attributes.y = widget->allocation.y; |
| 521 | attributes.width = widget->allocation.width; |
| 522 | attributes.height = widget->allocation.height; |
| 523 | |
| 524 | if (pizza->shadow_type == GTK_MYSHADOW_NONE) |
| 525 | { |
| 526 | /* no border, no changes to sizes */ |
| 527 | } else |
| 528 | if (pizza->shadow_type == GTK_MYSHADOW_THIN) |
| 529 | { |
| 530 | /* GTK_MYSHADOW_THIN == wxSIMPLE_BORDER */ |
| 531 | attributes.x += 1; |
| 532 | attributes.y += 1; |
| 533 | attributes.width -= 2; |
| 534 | attributes.height -= 2; |
| 535 | } else |
| 536 | { |
| 537 | /* GTK_MYSHADOW_IN == wxSUNKEN_BORDER */ |
| 538 | /* GTK_MYSHADOW_OUT == wxRAISED_BORDER */ |
| 539 | attributes.x += 2; |
| 540 | attributes.y += 2; |
| 541 | attributes.width -= 4; |
| 542 | attributes.height -= 4; |
| 543 | } |
| 544 | |
| 545 | /* minimal size */ |
| 546 | if (attributes.width < 2) attributes.width = 2; |
| 547 | if (attributes.height < 2) attributes.height = 2; |
| 548 | |
| 549 | attributes.wclass = GDK_INPUT_OUTPUT; |
| 550 | attributes.visual = gtk_widget_get_visual (widget); |
| 551 | attributes.colormap = gtk_widget_get_colormap (widget); |
| 552 | attributes.event_mask = |
| 553 | GDK_VISIBILITY_NOTIFY_MASK; |
| 554 | attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; |
| 555 | |
| 556 | widget->window = gdk_window_new(gtk_widget_get_parent_window (widget), |
| 557 | &attributes, attributes_mask); |
| 558 | gdk_window_set_user_data (widget->window, widget); |
| 559 | |
| 560 | attributes.x = 0; |
| 561 | attributes.y = 0; |
| 562 | |
| 563 | attributes.event_mask = gtk_widget_get_events (widget); |
| 564 | attributes.event_mask |= |
| 565 | GDK_EXPOSURE_MASK | |
| 566 | GDK_POINTER_MOTION_MASK | |
| 567 | GDK_POINTER_MOTION_HINT_MASK | |
| 568 | GDK_BUTTON_MOTION_MASK | |
| 569 | GDK_BUTTON1_MOTION_MASK | |
| 570 | GDK_BUTTON2_MOTION_MASK | |
| 571 | GDK_BUTTON3_MOTION_MASK | |
| 572 | GDK_BUTTON_PRESS_MASK | |
| 573 | GDK_BUTTON_RELEASE_MASK | |
| 574 | GDK_KEY_PRESS_MASK | |
| 575 | GDK_KEY_RELEASE_MASK | |
| 576 | GDK_ENTER_NOTIFY_MASK | |
| 577 | GDK_LEAVE_NOTIFY_MASK | |
| 578 | GDK_FOCUS_CHANGE_MASK; |
| 579 | |
| 580 | pizza->bin_window = gdk_window_new(widget->window, |
| 581 | &attributes, attributes_mask); |
| 582 | gdk_window_set_user_data (pizza->bin_window, widget); |
| 583 | |
| 584 | widget->style = gtk_style_attach (widget->style, widget->window); |
| 585 | gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL); |
| 586 | gtk_style_set_background (widget->style, pizza->bin_window, GTK_STATE_NORMAL ); |
| 587 | |
| 588 | /* add filters for intercepting visibility and expose events */ |
| 589 | gdk_window_add_filter (widget->window, gtk_pizza_main_filter, pizza); |
| 590 | gdk_window_add_filter (pizza->bin_window, gtk_pizza_filter, pizza); |
| 591 | |
| 592 | /* we NEED gravity or we'll give up */ |
| 593 | gravity_works = gdk_window_set_static_gravities (pizza->bin_window, TRUE); |
| 594 | |
| 595 | /* cannot be done before realisation */ |
| 596 | children = pizza->children; |
| 597 | while (children) |
| 598 | { |
| 599 | child = children->data; |
| 600 | children = children->next; |
| 601 | |
| 602 | gtk_widget_set_parent_window (child->widget, pizza->bin_window); |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | static void |
| 607 | gtk_pizza_unrealize (GtkWidget *widget) |
| 608 | { |
| 609 | GtkPizza *pizza; |
| 610 | |
| 611 | g_return_if_fail (widget != NULL); |
| 612 | g_return_if_fail (GTK_IS_PIZZA (widget)); |
| 613 | |
| 614 | pizza = GTK_PIZZA (widget); |
| 615 | |
| 616 | gdk_window_set_user_data (pizza->bin_window, NULL); |
| 617 | gdk_window_destroy (pizza->bin_window); |
| 618 | pizza->bin_window = NULL; |
| 619 | |
| 620 | if (GTK_WIDGET_CLASS (parent_class)->unrealize) |
| 621 | (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); |
| 622 | } |
| 623 | |
| 624 | static void |
| 625 | gtk_pizza_size_request (GtkWidget *widget, |
| 626 | GtkRequisition *requisition) |
| 627 | { |
| 628 | GtkPizza *pizza; |
| 629 | GtkPizzaChild *child; |
| 630 | GList *children; |
| 631 | GtkRequisition child_requisition; |
| 632 | |
| 633 | g_return_if_fail (widget != NULL); |
| 634 | g_return_if_fail (GTK_IS_PIZZA (widget)); |
| 635 | g_return_if_fail (requisition != NULL); |
| 636 | |
| 637 | pizza = GTK_PIZZA (widget); |
| 638 | |
| 639 | children = pizza->children; |
| 640 | while (children) |
| 641 | { |
| 642 | child = children->data; |
| 643 | children = children->next; |
| 644 | |
| 645 | if (GTK_WIDGET_VISIBLE (child->widget)) |
| 646 | { |
| 647 | gtk_widget_size_request (child->widget, &child_requisition); |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | /* request very little, I'm not sure if requesting nothing |
| 652 | will always have positive effects on stability... */ |
| 653 | requisition->width = 2; |
| 654 | requisition->height = 2; |
| 655 | } |
| 656 | |
| 657 | static void |
| 658 | gtk_pizza_size_allocate (GtkWidget *widget, |
| 659 | GtkAllocation *allocation) |
| 660 | { |
| 661 | GtkPizza *pizza; |
| 662 | gint border; |
| 663 | gint x,y,w,h; |
| 664 | GtkPizzaChild *child; |
| 665 | GList *children; |
| 666 | |
| 667 | g_return_if_fail (widget != NULL); |
| 668 | g_return_if_fail (GTK_IS_PIZZA(widget)); |
| 669 | g_return_if_fail (allocation != NULL); |
| 670 | |
| 671 | pizza = GTK_PIZZA (widget); |
| 672 | |
| 673 | widget->allocation = *allocation; |
| 674 | |
| 675 | if (pizza->shadow_type == GTK_MYSHADOW_NONE) |
| 676 | border = 0; |
| 677 | else |
| 678 | if (pizza->shadow_type == GTK_MYSHADOW_THIN) |
| 679 | border = 1; |
| 680 | else |
| 681 | border = 2; |
| 682 | |
| 683 | x = allocation->x + border; |
| 684 | y = allocation->y + border; |
| 685 | w = allocation->width - border*2; |
| 686 | h = allocation->height - border*2; |
| 687 | |
| 688 | if (GTK_WIDGET_REALIZED (widget)) |
| 689 | { |
| 690 | gdk_window_move_resize( widget->window, x, y, w, h ); |
| 691 | gdk_window_move_resize( pizza->bin_window, 0, 0, w, h ); |
| 692 | } |
| 693 | |
| 694 | children = pizza->children; |
| 695 | while (children) |
| 696 | { |
| 697 | child = children->data; |
| 698 | children = children->next; |
| 699 | |
| 700 | gtk_pizza_position_child (pizza, child); |
| 701 | gtk_pizza_allocate_child (pizza, child); |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | static void |
| 706 | gtk_pizza_draw (GtkWidget *widget, |
| 707 | GdkRectangle *area) |
| 708 | { |
| 709 | GtkPizza *pizza; |
| 710 | GtkPizzaChild *child; |
| 711 | GdkRectangle child_area; |
| 712 | GList *children; |
| 713 | |
| 714 | g_return_if_fail (widget != NULL); |
| 715 | g_return_if_fail (GTK_IS_PIZZA (widget)); |
| 716 | |
| 717 | pizza = GTK_PIZZA (widget); |
| 718 | |
| 719 | /* Sometimes, We handle all expose events in window.cpp now. */ |
| 720 | if (pizza->external_expose) |
| 721 | return; |
| 722 | |
| 723 | children = pizza->children; |
| 724 | if ( !(GTK_WIDGET_APP_PAINTABLE (widget)) && |
| 725 | (pizza->clear_on_draw)) |
| 726 | { |
| 727 | gdk_window_clear_area( pizza->bin_window, |
| 728 | area->x, area->y, area->width, area->height); |
| 729 | } |
| 730 | |
| 731 | while (children) |
| 732 | { |
| 733 | child = children->data; |
| 734 | children = children->next; |
| 735 | |
| 736 | if (gtk_widget_intersect (child->widget, area, &child_area)) |
| 737 | gtk_widget_draw (child->widget, &child_area); |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | static gint |
| 742 | gtk_pizza_expose (GtkWidget *widget, |
| 743 | GdkEventExpose *event) |
| 744 | { |
| 745 | GtkPizza *pizza; |
| 746 | GtkPizzaChild *child; |
| 747 | GdkEventExpose child_event; |
| 748 | GList *children; |
| 749 | |
| 750 | g_return_val_if_fail (widget != NULL, FALSE); |
| 751 | g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE); |
| 752 | g_return_val_if_fail (event != NULL, FALSE); |
| 753 | |
| 754 | pizza = GTK_PIZZA (widget); |
| 755 | |
| 756 | /* Sometimes, We handle all expose events in window.cpp now. */ |
| 757 | if (pizza->external_expose) |
| 758 | return FALSE; |
| 759 | |
| 760 | if (event->window != pizza->bin_window) |
| 761 | return FALSE; |
| 762 | |
| 763 | children = pizza->children; |
| 764 | while (children) |
| 765 | { |
| 766 | child = children->data; |
| 767 | children = children->next; |
| 768 | |
| 769 | child_event = *event; |
| 770 | |
| 771 | if (GTK_WIDGET_NO_WINDOW (child->widget) && |
| 772 | GTK_WIDGET_DRAWABLE (child->widget) && |
| 773 | gtk_widget_intersect (child->widget, &event->area, &child_event.area)) |
| 774 | { |
| 775 | gtk_widget_event (child->widget, (GdkEvent*) &child_event); |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | return TRUE; |
| 780 | } |
| 781 | |
| 782 | static void |
| 783 | gtk_pizza_add (GtkContainer *container, |
| 784 | GtkWidget *widget) |
| 785 | { |
| 786 | g_return_if_fail (container != NULL); |
| 787 | g_return_if_fail (GTK_IS_PIZZA (container)); |
| 788 | g_return_if_fail (widget != NULL); |
| 789 | |
| 790 | gtk_pizza_put (GTK_PIZZA (container), widget, 0, 0, 20, 20 ); |
| 791 | } |
| 792 | |
| 793 | static void |
| 794 | gtk_pizza_remove (GtkContainer *container, |
| 795 | GtkWidget *widget) |
| 796 | { |
| 797 | GtkPizza *pizza; |
| 798 | GtkPizzaChild *child; |
| 799 | GList *children; |
| 800 | |
| 801 | g_return_if_fail (container != NULL); |
| 802 | g_return_if_fail (GTK_IS_PIZZA (container)); |
| 803 | g_return_if_fail (widget != NULL); |
| 804 | |
| 805 | pizza = GTK_PIZZA (container); |
| 806 | |
| 807 | children = pizza->children; |
| 808 | while (children) |
| 809 | { |
| 810 | child = children->data; |
| 811 | |
| 812 | if (child->widget == widget) |
| 813 | { |
| 814 | gtk_widget_unparent (widget); |
| 815 | |
| 816 | /* security checks */ |
| 817 | g_return_if_fail (GTK_IS_WIDGET (widget)); |
| 818 | |
| 819 | pizza->children = g_list_remove_link (pizza->children, children); |
| 820 | g_list_free (children); |
| 821 | g_free (child); |
| 822 | |
| 823 | /* security checks */ |
| 824 | g_return_if_fail (GTK_IS_WIDGET (widget)); |
| 825 | |
| 826 | #ifndef __WXGTK20__ |
| 827 | GTK_PRIVATE_UNSET_FLAG (widget, GTK_IS_OFFSCREEN); |
| 828 | #endif |
| 829 | |
| 830 | break; |
| 831 | } |
| 832 | |
| 833 | children = children->next; |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | static void |
| 838 | gtk_pizza_forall (GtkContainer *container, |
| 839 | gboolean include_internals, |
| 840 | GtkCallback callback, |
| 841 | gpointer callback_data) |
| 842 | { |
| 843 | GtkPizza *pizza; |
| 844 | GtkPizzaChild *child; |
| 845 | GList *children; |
| 846 | |
| 847 | g_return_if_fail (container != NULL); |
| 848 | g_return_if_fail (GTK_IS_PIZZA (container)); |
| 849 | g_return_if_fail (callback != NULL); |
| 850 | |
| 851 | pizza = GTK_PIZZA (container); |
| 852 | |
| 853 | children = pizza->children; |
| 854 | while (children) |
| 855 | { |
| 856 | child = children->data; |
| 857 | children = children->next; |
| 858 | |
| 859 | (* callback) (child->widget, callback_data); |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | |
| 864 | /* Operations on children |
| 865 | */ |
| 866 | |
| 867 | static void |
| 868 | gtk_pizza_position_child (GtkPizza *pizza, |
| 869 | GtkPizzaChild *child) |
| 870 | { |
| 871 | gint x; |
| 872 | gint y; |
| 873 | |
| 874 | x = child->x - pizza->xoffset; |
| 875 | y = child->y - pizza->yoffset; |
| 876 | |
| 877 | if (IS_ONSCREEN (x,y)) |
| 878 | { |
| 879 | if (GTK_WIDGET_MAPPED (pizza) && |
| 880 | GTK_WIDGET_VISIBLE (child->widget)) |
| 881 | { |
| 882 | if (!GTK_WIDGET_MAPPED (child->widget)) |
| 883 | gtk_widget_map (child->widget); |
| 884 | } |
| 885 | |
| 886 | #ifndef __WXGTK20__ |
| 887 | if (GTK_WIDGET_IS_OFFSCREEN (child->widget)) |
| 888 | GTK_PRIVATE_UNSET_FLAG (child->widget, GTK_IS_OFFSCREEN); |
| 889 | #endif |
| 890 | } |
| 891 | else |
| 892 | { |
| 893 | #ifndef __WXGTK20__ |
| 894 | if (!GTK_WIDGET_IS_OFFSCREEN (child->widget)) |
| 895 | GTK_PRIVATE_SET_FLAG (child->widget, GTK_IS_OFFSCREEN); |
| 896 | #endif |
| 897 | |
| 898 | if (GTK_WIDGET_MAPPED (child->widget)) |
| 899 | gtk_widget_unmap (child->widget); |
| 900 | } |
| 901 | } |
| 902 | |
| 903 | static void |
| 904 | gtk_pizza_allocate_child (GtkPizza *pizza, |
| 905 | GtkPizzaChild *child) |
| 906 | { |
| 907 | GtkAllocation allocation; |
| 908 | GtkRequisition requisition; |
| 909 | |
| 910 | allocation.x = child->x - pizza->xoffset; |
| 911 | allocation.y = child->y - pizza->yoffset; |
| 912 | gtk_widget_get_child_requisition (child->widget, &requisition); |
| 913 | allocation.width = requisition.width; |
| 914 | allocation.height = requisition.height; |
| 915 | |
| 916 | gtk_widget_size_allocate (child->widget, &allocation); |
| 917 | } |
| 918 | |
| 919 | static void |
| 920 | gtk_pizza_position_children (GtkPizza *pizza) |
| 921 | { |
| 922 | GList *tmp_list; |
| 923 | |
| 924 | tmp_list = pizza->children; |
| 925 | while (tmp_list) |
| 926 | { |
| 927 | GtkPizzaChild *child = tmp_list->data; |
| 928 | tmp_list = tmp_list->next; |
| 929 | |
| 930 | gtk_pizza_position_child (pizza, child); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | static void |
| 935 | gtk_pizza_adjust_allocations_recurse (GtkWidget *widget, |
| 936 | gpointer cb_data) |
| 937 | { |
| 938 | GtkPizzaAdjData *data = cb_data; |
| 939 | |
| 940 | widget->allocation.x += data->dx; |
| 941 | widget->allocation.y += data->dy; |
| 942 | |
| 943 | if (GTK_WIDGET_NO_WINDOW (widget) && GTK_IS_CONTAINER (widget)) |
| 944 | { |
| 945 | gtk_container_forall (GTK_CONTAINER (widget), |
| 946 | gtk_pizza_adjust_allocations_recurse, |
| 947 | cb_data); |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | static void |
| 952 | gtk_pizza_adjust_allocations (GtkPizza *pizza, |
| 953 | gint dx, |
| 954 | gint dy) |
| 955 | { |
| 956 | GList *tmp_list; |
| 957 | GtkPizzaAdjData data; |
| 958 | |
| 959 | data.dx = dx; |
| 960 | data.dy = dy; |
| 961 | |
| 962 | tmp_list = pizza->children; |
| 963 | while (tmp_list) |
| 964 | { |
| 965 | GtkPizzaChild *child = tmp_list->data; |
| 966 | tmp_list = tmp_list->next; |
| 967 | |
| 968 | child->widget->allocation.x += dx; |
| 969 | child->widget->allocation.y += dy; |
| 970 | |
| 971 | if (GTK_WIDGET_NO_WINDOW (child->widget) && |
| 972 | GTK_IS_CONTAINER (child->widget)) |
| 973 | { |
| 974 | gtk_container_forall (GTK_CONTAINER (child->widget), |
| 975 | gtk_pizza_adjust_allocations_recurse, |
| 976 | &data); |
| 977 | } |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | /* Callbacks */ |
| 982 | |
| 983 | /* unused */ |
| 984 | #if 0 |
| 985 | /* Send a synthetic expose event to the widget |
| 986 | */ |
| 987 | static void |
| 988 | gtk_pizza_expose_area (GtkPizza *pizza, |
| 989 | gint x, gint y, gint width, gint height) |
| 990 | { |
| 991 | if (pizza->visibility == GDK_VISIBILITY_UNOBSCURED) |
| 992 | { |
| 993 | GdkEventExpose event; |
| 994 | |
| 995 | event.type = GDK_EXPOSE; |
| 996 | event.send_event = TRUE; |
| 997 | event.window = pizza->bin_window; |
| 998 | event.count = 0; |
| 999 | |
| 1000 | event.area.x = x; |
| 1001 | event.area.y = y; |
| 1002 | event.area.width = width; |
| 1003 | event.area.height = height; |
| 1004 | |
| 1005 | gdk_window_ref (event.window); |
| 1006 | gtk_widget_event (GTK_WIDGET (pizza), (GdkEvent *)&event); |
| 1007 | gdk_window_unref (event.window); |
| 1008 | } |
| 1009 | } |
| 1010 | #endif /* unused */ |
| 1011 | |
| 1012 | /* This function is used to find events to process while scrolling |
| 1013 | */ |
| 1014 | |
| 1015 | static Bool |
| 1016 | gtk_pizza_expose_predicate (Display *display, |
| 1017 | XEvent *xevent, |
| 1018 | XPointer arg) |
| 1019 | { |
| 1020 | if ((xevent->type == Expose) || |
| 1021 | ((xevent->xany.window == *(Window *)arg) && |
| 1022 | (xevent->type == ConfigureNotify))) |
| 1023 | return True; |
| 1024 | else |
| 1025 | return False; |
| 1026 | } |
| 1027 | |
| 1028 | /* This is the main routine to do the scrolling. Scrolling is |
| 1029 | * done by "Guffaw" scrolling, as in the Mozilla XFE, with |
| 1030 | * a few modifications. |
| 1031 | * |
| 1032 | * The main improvement is that we keep track of whether we |
| 1033 | * are obscured or not. If not, we ignore the generated expose |
| 1034 | * events and instead do the exposes ourself, without having |
| 1035 | * to wait for a roundtrip to the server. This also provides |
| 1036 | * a limited form of expose-event compression, since we do |
| 1037 | * the affected area as one big chunk. |
| 1038 | */ |
| 1039 | |
| 1040 | void |
| 1041 | gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy) |
| 1042 | { |
| 1043 | GtkWidget *widget; |
| 1044 | XEvent xevent; |
| 1045 | |
| 1046 | gint x,y,w,h,border; |
| 1047 | |
| 1048 | widget = GTK_WIDGET (pizza); |
| 1049 | |
| 1050 | pizza->xoffset += dx; |
| 1051 | pizza->yoffset += dy; |
| 1052 | |
| 1053 | if (!GTK_WIDGET_MAPPED (pizza)) |
| 1054 | { |
| 1055 | gtk_pizza_position_children (pizza); |
| 1056 | return; |
| 1057 | } |
| 1058 | |
| 1059 | gtk_pizza_adjust_allocations (pizza, -dx, -dy); |
| 1060 | |
| 1061 | if (pizza->shadow_type == GTK_MYSHADOW_NONE) |
| 1062 | border = 0; |
| 1063 | else |
| 1064 | if (pizza->shadow_type == GTK_MYSHADOW_THIN) |
| 1065 | border = 1; |
| 1066 | else |
| 1067 | border = 2; |
| 1068 | |
| 1069 | x = 0; |
| 1070 | y = 0; |
| 1071 | w = widget->allocation.width - 2*border; |
| 1072 | h = widget->allocation.height - 2*border; |
| 1073 | |
| 1074 | if (dx > 0) |
| 1075 | { |
| 1076 | if (gravity_works) |
| 1077 | { |
| 1078 | gdk_window_resize (pizza->bin_window, |
| 1079 | w + dx, |
| 1080 | h); |
| 1081 | gdk_window_move (pizza->bin_window, x-dx, y); |
| 1082 | gdk_window_move_resize (pizza->bin_window, x, y, w, h ); |
| 1083 | } |
| 1084 | else |
| 1085 | { |
| 1086 | /* FIXME */ |
| 1087 | } |
| 1088 | } |
| 1089 | else if (dx < 0) |
| 1090 | { |
| 1091 | if (gravity_works) |
| 1092 | { |
| 1093 | gdk_window_move_resize (pizza->bin_window, |
| 1094 | x + dx, |
| 1095 | y, |
| 1096 | w - dx, |
| 1097 | h); |
| 1098 | gdk_window_move (pizza->bin_window, x, y); |
| 1099 | gdk_window_resize (pizza->bin_window, w, h ); |
| 1100 | } |
| 1101 | else |
| 1102 | { |
| 1103 | /* FIXME */ |
| 1104 | } |
| 1105 | } |
| 1106 | |
| 1107 | if (dy > 0) |
| 1108 | { |
| 1109 | if (gravity_works) |
| 1110 | { |
| 1111 | gdk_window_resize (pizza->bin_window, w, h + dy); |
| 1112 | gdk_window_move (pizza->bin_window, x, y-dy); |
| 1113 | gdk_window_move_resize (pizza->bin_window, |
| 1114 | x, y, w, h ); |
| 1115 | } |
| 1116 | else |
| 1117 | { |
| 1118 | /* FIXME */ |
| 1119 | } |
| 1120 | } |
| 1121 | else if (dy < 0) |
| 1122 | { |
| 1123 | if (gravity_works) |
| 1124 | { |
| 1125 | gdk_window_move_resize (pizza->bin_window, |
| 1126 | x, y+dy, w, h - dy ); |
| 1127 | gdk_window_move (pizza->bin_window, x, y); |
| 1128 | gdk_window_resize (pizza->bin_window, w, h ); |
| 1129 | } |
| 1130 | else |
| 1131 | { |
| 1132 | /* FIXME */ |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | gtk_pizza_position_children (pizza); |
| 1137 | |
| 1138 | gdk_flush(); |
| 1139 | while (XCheckIfEvent(GDK_WINDOW_XDISPLAY (pizza->bin_window), |
| 1140 | &xevent, |
| 1141 | gtk_pizza_expose_predicate, |
| 1142 | (XPointer)&GDK_WINDOW_XWINDOW (pizza->bin_window))) |
| 1143 | { |
| 1144 | GdkEvent event; |
| 1145 | GtkWidget *event_widget; |
| 1146 | |
| 1147 | if ((xevent.xany.window == GDK_WINDOW_XWINDOW (pizza->bin_window)) ) |
| 1148 | gtk_pizza_filter (&xevent, &event, pizza); |
| 1149 | |
| 1150 | if (xevent.type == Expose) |
| 1151 | { |
| 1152 | event.expose.window = gdk_window_lookup (xevent.xany.window); |
| 1153 | gdk_window_get_user_data (event.expose.window, |
| 1154 | (gpointer *)&event_widget); |
| 1155 | |
| 1156 | if (event_widget) |
| 1157 | { |
| 1158 | event.expose.type = GDK_EXPOSE; |
| 1159 | event.expose.area.x = xevent.xexpose.x; |
| 1160 | event.expose.area.y = xevent.xexpose.y; |
| 1161 | event.expose.area.width = xevent.xexpose.width; |
| 1162 | event.expose.area.height = xevent.xexpose.height; |
| 1163 | event.expose.count = xevent.xexpose.count; |
| 1164 | |
| 1165 | gdk_window_ref (event.expose.window); |
| 1166 | gtk_widget_event (event_widget, &event); |
| 1167 | gdk_window_unref (event.expose.window); |
| 1168 | } |
| 1169 | } |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | /* The main event filter. Actually, we probably don't really need |
| 1174 | * to install this as a filter at all, since we are calling it |
| 1175 | * directly above in the expose-handling hack. But in case scrollbars |
| 1176 | * are fixed up in some manner... |
| 1177 | * |
| 1178 | * This routine identifies expose events that are generated when |
| 1179 | * we've temporarily moved the bin_window_origin, and translates |
| 1180 | * them or discards them, depending on whether we are obscured |
| 1181 | * or not. |
| 1182 | */ |
| 1183 | static GdkFilterReturn |
| 1184 | gtk_pizza_filter (GdkXEvent *gdk_xevent, |
| 1185 | GdkEvent *event, |
| 1186 | gpointer data) |
| 1187 | { |
| 1188 | XEvent *xevent; |
| 1189 | GtkPizza *pizza; |
| 1190 | |
| 1191 | xevent = (XEvent *)gdk_xevent; |
| 1192 | |
| 1193 | pizza = GTK_PIZZA (data); |
| 1194 | |
| 1195 | if (!pizza->use_filter) |
| 1196 | return GDK_FILTER_CONTINUE; |
| 1197 | |
| 1198 | switch (xevent->type) |
| 1199 | { |
| 1200 | case Expose: |
| 1201 | if (xevent->xexpose.serial == pizza->configure_serial) |
| 1202 | { |
| 1203 | xevent->xexpose.x += pizza->scroll_x; |
| 1204 | xevent->xexpose.y += pizza->scroll_y; |
| 1205 | } |
| 1206 | break; |
| 1207 | |
| 1208 | case ConfigureNotify: |
| 1209 | { |
| 1210 | pizza->configure_serial = xevent->xconfigure.serial; |
| 1211 | pizza->scroll_x = xevent->xconfigure.x; |
| 1212 | pizza->scroll_y = xevent->xconfigure.y; |
| 1213 | } |
| 1214 | break; |
| 1215 | } |
| 1216 | |
| 1217 | return GDK_FILTER_CONTINUE; |
| 1218 | } |
| 1219 | |
| 1220 | /* Although GDK does have a GDK_VISIBILITY_NOTIFY event, |
| 1221 | * there is no corresponding event in GTK, so we have |
| 1222 | * to get the events from a filter |
| 1223 | */ |
| 1224 | static GdkFilterReturn |
| 1225 | gtk_pizza_main_filter (GdkXEvent *gdk_xevent, |
| 1226 | GdkEvent *event, |
| 1227 | gpointer data) |
| 1228 | { |
| 1229 | XEvent *xevent; |
| 1230 | GtkPizza *pizza; |
| 1231 | |
| 1232 | xevent = (XEvent *)gdk_xevent; |
| 1233 | pizza = GTK_PIZZA (data); |
| 1234 | |
| 1235 | if (!pizza->use_filter) |
| 1236 | return GDK_FILTER_CONTINUE; |
| 1237 | |
| 1238 | if (xevent->type == VisibilityNotify) |
| 1239 | { |
| 1240 | switch (xevent->xvisibility.state) |
| 1241 | { |
| 1242 | case VisibilityFullyObscured: |
| 1243 | pizza->visibility = GDK_VISIBILITY_FULLY_OBSCURED; |
| 1244 | break; |
| 1245 | |
| 1246 | case VisibilityPartiallyObscured: |
| 1247 | pizza->visibility = GDK_VISIBILITY_PARTIAL; |
| 1248 | break; |
| 1249 | |
| 1250 | case VisibilityUnobscured: |
| 1251 | pizza->visibility = GDK_VISIBILITY_UNOBSCURED; |
| 1252 | break; |
| 1253 | } |
| 1254 | |
| 1255 | return GDK_FILTER_REMOVE; |
| 1256 | } |
| 1257 | |
| 1258 | return GDK_FILTER_CONTINUE; |
| 1259 | } |
| 1260 | |
| 1261 | |
| 1262 | #ifdef __cplusplus |
| 1263 | } |
| 1264 | #endif /* __cplusplus */ |
| 1265 | |