// SPDX-License-Identifier: GPL-2.0-only #include #include #include #include "common/scene-helpers.h" #include "labwc.h" #include "menu/menu.h" #include "ssd.h" #include "view.h" #include "workspaces.h" #define LAB_MIN_VIEW_WIDTH 100 #define LAB_MIN_VIEW_HEIGHT 60 #define LAB_FALLBACK_WIDTH 640 #define LAB_FALLBACK_HEIGHT 480 #define MAX(a, b) (((a) > (b)) ? (a) : (b)) /** * All view_apply_xxx_geometry() functions must *not* modify * any state besides repositioning or resizing the view. * * They may be called repeatably during output layout changes. */ enum view_edge { VIEW_EDGE_INVALID = 0, VIEW_EDGE_LEFT, VIEW_EDGE_RIGHT, VIEW_EDGE_UP, VIEW_EDGE_DOWN, VIEW_EDGE_CENTER, }; static enum view_edge view_edge_invert(enum view_edge edge) { switch (edge) { case VIEW_EDGE_LEFT: return VIEW_EDGE_RIGHT; case VIEW_EDGE_RIGHT: return VIEW_EDGE_LEFT; case VIEW_EDGE_UP: return VIEW_EDGE_DOWN; case VIEW_EDGE_DOWN: return VIEW_EDGE_UP; case VIEW_EDGE_CENTER: case VIEW_EDGE_INVALID: default: return VIEW_EDGE_INVALID; } } static struct wlr_box view_get_edge_snap_box(struct view *view, struct output *output, enum view_edge edge) { struct wlr_box usable = output_usable_area_in_layout_coords(output); if (usable.height == output->wlr_output->height && output->wlr_output->scale != 1) { usable.height /= output->wlr_output->scale; } if (usable.width == output->wlr_output->width && output->wlr_output->scale != 1) { usable.width /= output->wlr_output->scale; } int x_offset = edge == VIEW_EDGE_RIGHT ? (usable.width + rc.gap) / 2 : rc.gap; int y_offset = edge == VIEW_EDGE_DOWN ? (usable.height + rc.gap) / 2 : rc.gap; int base_width, base_height; switch (edge) { case VIEW_EDGE_LEFT: case VIEW_EDGE_RIGHT: base_width = (usable.width - 3 * rc.gap) / 2; base_height = usable.height - 2 * rc.gap; break; case VIEW_EDGE_UP: case VIEW_EDGE_DOWN: base_width = usable.width - 2 * rc.gap; base_height = (usable.height - 3 * rc.gap) / 2; break; default: case VIEW_EDGE_CENTER: base_width = usable.width - 2 * rc.gap; base_height = usable.height - 2 * rc.gap; break; } struct border margin = ssd_get_margin(view->ssd); struct wlr_box dst = { .x = x_offset + usable.x + margin.left, .y = y_offset + usable.y + margin.top, .width = base_width - margin.left - margin.right, .height = base_height - margin.top - margin.bottom, }; return dst; } static void _view_set_activated(struct view *view, bool activated) { ssd_set_active(view->ssd, activated); if (view->impl->set_activated) { view->impl->set_activated(view, activated); } if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_set_activated( view->toplevel_handle, activated); } } void view_set_activated(struct view *view) { assert(view); struct view *last = view->server->focused_view; if (last == view) { return; } if (last) { _view_set_activated(last, false); } _view_set_activated(view, true); view->server->focused_view = view; } void view_close(struct view *view) { assert(view); if (view->impl->close) { view->impl->close(view); } } void view_move(struct view *view, int x, int y) { assert(view); if (view->impl->move) { view->impl->move(view, x, y); } } void view_moved(struct view *view) { assert(view); wlr_scene_node_set_position(&view->scene_tree->node, view->x, view->y); view_discover_output(view); ssd_update_geometry(view->ssd); cursor_update_focus(view->server); } /* N.B. Use view_move() if not resizing. */ void view_move_resize(struct view *view, struct wlr_box geo) { assert(view); if (view->impl->configure) { view->impl->configure(view, geo); } } void view_adjust_size(struct view *view, int *w, int *h) { assert(view); #if HAVE_XWAYLAND if (xwayland_apply_size_hints(view, w, h)) { /* We don't want to cap the size to keep the aspect ratio */ return; } #endif *w = MAX(*w, LAB_MIN_VIEW_WIDTH); *h = MAX(*h, LAB_MIN_VIEW_HEIGHT); } void view_minimize(struct view *view, bool minimized) { assert(view); if (view->minimized == minimized) { return; } if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_set_minimized( view->toplevel_handle, minimized); } view->minimized = minimized; if (minimized) { view->impl->unmap(view); desktop_move_to_back(view); _view_set_activated(view, false); if (view == view->server->focused_view) { /* * Prevents clearing the active view when * we don't actually have keyboard focus. * * This may happen when using a custom mouse * focus configuration or by using the foreign * toplevel protocol via some panel. */ view->server->focused_view = NULL; } } else { view->impl->map(view); } } /* view_wlr_output - return the output that a view is mostly on */ struct wlr_output * view_wlr_output(struct view *view) { assert(view); double closest_x, closest_y; struct wlr_output *wlr_output = NULL; wlr_output_layout_closest_point(view->server->output_layout, wlr_output, view->x + view->w / 2, view->y + view->h / 2, &closest_x, &closest_y); wlr_output = wlr_output_layout_output_at(view->server->output_layout, closest_x, closest_y); return wlr_output; } static struct output * view_output(struct view *view) { struct wlr_output *wlr_output = view_wlr_output(view); return output_from_wlr_output(view->server, wlr_output); } bool view_compute_centered_position(struct view *view, int w, int h, int *x, int *y) { struct output *output = view_output(view); if (!output) { return false; } struct wlr_output *wlr_output = output->wlr_output; if (!wlr_output) { return false; } struct border margin = ssd_get_margin(view->ssd); struct wlr_box usable = output_usable_area_in_layout_coords(output); int width = w + margin.left + margin.right; int height = h + margin.top + margin.bottom; *x = usable.x + (usable.width - width) / 2; *y = usable.y + (usable.height - height) / 2; /* If view is bigger than usable area, just top/left align it */ if (*x < 0) { *x = 0; } if (*y < 0) { *y = 0; } #if HAVE_XWAYLAND /* TODO: refactor xwayland.c functions to get rid of this */ if (view->type == LAB_XWAYLAND_VIEW) { *x += margin.left; *y += margin.top; } #endif return true; } static void set_fallback_geometry(struct view *view) { view->natural_geometry.width = LAB_FALLBACK_WIDTH; view->natural_geometry.height = LAB_FALLBACK_HEIGHT; view_compute_centered_position(view, view->natural_geometry.width, view->natural_geometry.height, &view->natural_geometry.x, &view->natural_geometry.y); } #undef LAB_FALLBACK_WIDTH #undef LAB_FALLBACK_HEIGHT void view_store_natural_geometry(struct view *view) { assert(view); if (view->maximized || view->tiled) { /* Do not overwrite the stored geometry with special cases */ return; } /** * If an application was started maximized or fullscreened, its * natural_geometry width/height may still be zero in which case we set * some fallback values. This is the case with foot and Qt applications. */ if (!view->w || !view->h) { set_fallback_geometry(view); } else { view->natural_geometry.x = view->x; view->natural_geometry.y = view->y; view->natural_geometry.width = view->w; view->natural_geometry.height = view->h; } } void view_center(struct view *view) { assert(view); int x, y; if (view_compute_centered_position(view, view->w, view->h, &x, &y)) { view_move(view, x, y); } } static void view_apply_natural_geometry(struct view *view) { struct wlr_output_layout *layout = view->server->output_layout; if (wlr_output_layout_intersects(layout, NULL, &view->natural_geometry) || wl_list_empty(&layout->outputs)) { /* restore to original geometry */ view_move_resize(view, view->natural_geometry); } else { /* reposition if original geometry is offscreen */ struct wlr_box box = view->natural_geometry; if (view_compute_centered_position(view, box.width, box.height, &box.x, &box.y)) { view_move_resize(view, box); } } } static void view_apply_tiled_geometry(struct view *view, struct output *output) { assert(view->tiled); if (!output) { output = view_output(view); } if (!output) { wlr_log(WLR_ERROR, "Can't tile: no output"); return; } struct wlr_box dst = view_get_edge_snap_box(view, output, view->tiled); if (view->w == dst.width && view->h == dst.height) { /* move horizontally/vertically without changing size */ view_move(view, dst.x, dst.y); } else { view_move_resize(view, dst); } } static void view_apply_fullscreen_geometry(struct view *view, struct wlr_output *wlr_output) { assert(wlr_output); struct output *output = output_from_wlr_output(view->server, wlr_output); struct wlr_box box = { 0 }; wlr_output_effective_resolution(wlr_output, &box.width, &box.height); double ox = 0, oy = 0; wlr_output_layout_output_coords(output->server->output_layout, output->wlr_output, &ox, &oy); box.x -= ox; box.y -= oy; view_move_resize(view, box); } static void view_apply_maximized_geometry(struct view *view) { /* * The same code handles both initial maximize and re-maximize * to account for layout changes. In either case, view_output() * gives the output closest to the current geometry (which may * be different from the output originally maximized onto). * view_output() can return NULL if all outputs are disabled. */ struct output *output = view_output(view); if (!output) { return; } struct wlr_box box = output_usable_area_in_layout_coords(output); if (box.height == output->wlr_output->height && output->wlr_output->scale != 1) { box.height /= output->wlr_output->scale; } if (box.width == output->wlr_output->width && output->wlr_output->scale != 1) { box.width /= output->wlr_output->scale; } if (view->ssd_enabled) { struct border border = ssd_thickness(view); box.x += border.left; box.y += border.top; box.width -= border.right + border.left; box.height -= border.top + border.bottom; } view_move_resize(view, box); } static bool view_apply_special_geometry(struct view *view) { if (view->maximized) { view_apply_maximized_geometry(view); } else if (view->tiled) { view_apply_tiled_geometry(view, NULL); } else { return false; } return true; } static void set_maximized(struct view *view, bool maximized) { if (view->impl->maximize) { view->impl->maximize(view, maximized); } if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_set_maximized( view->toplevel_handle, maximized); } view->maximized = maximized; } /* * Un-maximize view and move it to specific geometry. Does not reset * tiled state (use view_set_untiled() if you want that). */ void view_restore_to(struct view *view, struct wlr_box geometry) { assert(view); if (view->fullscreen) { return; } if (view->maximized) { set_maximized(view, false); } view_move_resize(view, geometry); } /* Reset tiled state of view without changing geometry */ void view_set_untiled(struct view *view) { assert(view); view->tiled = VIEW_EDGE_INVALID; } void view_maximize(struct view *view, bool maximize, bool store_natural_geometry) { assert(view); if (view->maximized == maximize) { return; } if (view->fullscreen) { return; } if (maximize) { /* * Maximize via keybind or client request cancels * interactive move/resize since we can't move/resize * a maximized view. */ interactive_cancel(view); if (store_natural_geometry) { view_store_natural_geometry(view); } } set_maximized(view, maximize); if (!view_apply_special_geometry(view)) { view_apply_natural_geometry(view); } } void view_toggle_maximize(struct view *view) { assert(view); view_maximize(view, !view->maximized, /*store_natural_geometry*/ true); } void view_toggle_decorations(struct view *view) { assert(view); view_set_decorations(view, !view->ssd_enabled); } bool view_is_always_on_top(struct view *view) { assert(view); return view->scene_tree->node.parent == view->server->view_tree_always_on_top; } void view_toggle_always_on_top(struct view *view) { assert(view); if (view_is_always_on_top(view)) { view->workspace = view->server->workspace_current; wlr_scene_node_reparent(&view->scene_tree->node, view->workspace->tree); } else { wlr_scene_node_reparent(&view->scene_tree->node, view->server->view_tree_always_on_top); } } void view_move_to_workspace(struct view *view, struct workspace *workspace) { assert(view); assert(workspace); if (view->workspace != workspace) { view->workspace = workspace; wlr_scene_node_reparent(&view->scene_tree->node, workspace->tree); } } static void decorate(struct view *view) { if (!view->ssd) { view->ssd = ssd_create(view, view == view->server->focused_view); } } static void undecorate(struct view *view) { ssd_destroy(view->ssd); view->ssd = NULL; } void view_set_decorations(struct view *view, bool decorations) { assert(view); if (view->ssd_enabled != decorations && !view->fullscreen) { /* * Set view->ssd_enabled first since it is referenced * within the call tree of ssd_create() */ view->ssd_enabled = decorations; if (decorations) { decorate(view); } else { undecorate(view); } view_apply_special_geometry(view); } } void view_toggle_fullscreen(struct view *view) { assert(view); view_set_fullscreen(view, !view->fullscreen, NULL); } void view_set_fullscreen(struct view *view, bool fullscreen, struct wlr_output *wlr_output) { assert(view); if (fullscreen != !view->fullscreen) { return; } if (!wlr_output) { wlr_output = view_wlr_output(view); if (!wlr_output && fullscreen) { /* Prevent fullscreen with no available outputs */ return; } } if (view->impl->set_fullscreen) { view->impl->set_fullscreen(view, fullscreen); } if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_set_fullscreen( view->toplevel_handle, fullscreen); } if (fullscreen) { /* * Fullscreen via keybind or client request cancels * interactive move/resize since we can't move/resize * a fullscreen view. */ interactive_cancel(view); view_store_natural_geometry(view); /* Hide decorations when going fullscreen */ if (view->ssd_enabled) { undecorate(view); } view->fullscreen = wlr_output; view_apply_fullscreen_geometry(view, view->fullscreen); } else { view->fullscreen = false; /* Re-show decorations when no longer fullscreen */ if (view->ssd_enabled) { decorate(view); } /* Restore non-fullscreen geometry */ if (!view_apply_special_geometry(view)) { view_apply_natural_geometry(view); } } /* Show fullscreen views above top-layer */ struct output *output = output_from_wlr_output(view->server, wlr_output); if (!output) { return; } uint32_t top = ZWLR_LAYER_SHELL_V1_LAYER_TOP; wlr_scene_node_set_enabled(&output->layer_tree[top]->node, !fullscreen); } void view_adjust_for_layout_change(struct view *view) { assert(view); struct wlr_output_layout *layout = view->server->output_layout; if (view->fullscreen) { if (wlr_output_layout_get(layout, view->fullscreen)) { /* recompute fullscreen geometry */ view_apply_fullscreen_geometry(view, view->fullscreen); } else { /* output is gone, exit fullscreen */ view_set_fullscreen(view, false, NULL); } } else if (!view_apply_special_geometry(view)) { /* reposition view if it's offscreen */ struct wlr_box box = { view->x, view->y, view->w, view->h }; if (!wlr_output_layout_intersects(layout, NULL, &box)) { view_center(view); } } } static void view_output_enter(struct view *view, struct wlr_output *wlr_output) { if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_output_enter( view->toplevel_handle, wlr_output); } } static void view_output_leave(struct view *view, struct wlr_output *wlr_output) { if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_output_leave( view->toplevel_handle, wlr_output); } } /* * At present, a view can only 'enter' one output at a time, although the view * may span multiple outputs. Ideally we would handle multiple outputs, but * this method is the simplest form of what we want. */ void view_discover_output(struct view *view) { assert(view); struct output *old_output = view->output; struct output *new_output = view_output(view); if (old_output != new_output) { view->output = new_output; if (new_output) { view_output_enter(view, new_output->wlr_output); } if (old_output) { view_output_leave(view, old_output->wlr_output); } } } void view_on_output_destroy(struct view *view) { assert(view); view_output_leave(view, view->output->wlr_output); view->output = NULL; } void view_move_to_edge(struct view *view, const char *direction) { assert(view); struct output *output = view_output(view); if (!output) { wlr_log(WLR_ERROR, "no output"); return; } if (!direction) { wlr_log(WLR_ERROR, "invalid edge"); return; } struct border margin = ssd_get_margin(view->ssd); struct wlr_box usable = output_usable_area_in_layout_coords(output); if (usable.height == output->wlr_output->height && output->wlr_output->scale != 1) { usable.height /= output->wlr_output->scale; } if (usable.width == output->wlr_output->width && output->wlr_output->scale != 1) { usable.width /= output->wlr_output->scale; } int x = 0, y = 0; if (!strcasecmp(direction, "left")) { x = usable.x + margin.left + rc.gap; y = view->y; } else if (!strcasecmp(direction, "up")) { x = view->x; y = usable.y + margin.top + rc.gap; } else if (!strcasecmp(direction, "right")) { x = usable.x + usable.width - view->w - margin.right - rc.gap; y = view->y; } else if (!strcasecmp(direction, "down")) { x = view->x; y = usable.y + usable.height - view->h - margin.bottom - rc.gap; } else { wlr_log(WLR_ERROR, "invalid edge"); return; } view_move(view, x, y); } static enum view_edge view_edge_parse(const char *direction) { if (!direction) { return VIEW_EDGE_INVALID; } if (!strcasecmp(direction, "left")) { return VIEW_EDGE_LEFT; } else if (!strcasecmp(direction, "up")) { return VIEW_EDGE_UP; } else if (!strcasecmp(direction, "right")) { return VIEW_EDGE_RIGHT; } else if (!strcasecmp(direction, "down")) { return VIEW_EDGE_DOWN; } else if (!strcasecmp(direction, "center")) { return VIEW_EDGE_CENTER; } else { return VIEW_EDGE_INVALID; } } void view_snap_to_edge(struct view *view, const char *direction, bool store_natural_geometry) { assert(view); if (view->fullscreen) { return; } struct output *output = view_output(view); if (!output) { wlr_log(WLR_ERROR, "no output"); return; } enum view_edge edge = view_edge_parse(direction); if (edge == VIEW_EDGE_INVALID) { wlr_log(WLR_ERROR, "invalid edge"); return; } if (view->tiled == edge && !view->maximized) { /* We are already tiled for this edge and thus should switch outputs */ struct wlr_output *new_output = NULL; struct wlr_output *current_output = output->wlr_output; struct wlr_output_layout *layout = view->server->output_layout; switch (edge) { case VIEW_EDGE_LEFT: new_output = wlr_output_layout_adjacent_output( layout, WLR_DIRECTION_LEFT, current_output, 1, 0); break; case VIEW_EDGE_RIGHT: new_output = wlr_output_layout_adjacent_output( layout, WLR_DIRECTION_RIGHT, current_output, 1, 0); break; case VIEW_EDGE_UP: new_output = wlr_output_layout_adjacent_output( layout, WLR_DIRECTION_UP, current_output, 0, 1); break; case VIEW_EDGE_DOWN: new_output = wlr_output_layout_adjacent_output( layout, WLR_DIRECTION_DOWN, current_output, 0, 1); break; default: break; } if (new_output && new_output != current_output) { /* Move to next output */ edge = view_edge_invert(edge); output = output_from_wlr_output(view->server, new_output); } else { /* * No more output to move to * * We re-apply the tiled geometry without changing any * state because the window might have been moved away * (and thus got untiled) and then snapped back to the * original edge. * * TODO: The described pattern will cause another bug * in multi monitor setups: it will snap the * window to the inverted edge of the nearest * output. This is the desired behavior when * caused by a keybind but doesn't make sense * when caused by mouse movement. */ view_apply_tiled_geometry(view, output); return; } } if (view->maximized) { /* Unmaximize + keep using existing natural_geometry */ view_maximize(view, false, /*store_natural_geometry*/ false); } else if (store_natural_geometry) { /* store current geometry as new natural_geometry */ view_store_natural_geometry(view); } view_set_untiled(view); view->tiled = edge; view_apply_tiled_geometry(view, output); } const char * view_get_string_prop(struct view *view, const char *prop) { assert(view); assert(prop); if (view->impl->get_string_prop) { return view->impl->get_string_prop(view, prop); } return ""; } void view_update_title(struct view *view) { assert(view); const char *title = view_get_string_prop(view, "title"); if (!view->toplevel_handle || !title) { return; } ssd_update_title(view->ssd); wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle, title); } void view_update_app_id(struct view *view) { assert(view); const char *app_id = view_get_string_prop(view, "app_id"); if (!view->toplevel_handle || !app_id) { return; } wlr_foreign_toplevel_handle_v1_set_app_id( view->toplevel_handle, app_id); } void view_reload_ssd(struct view *view) { assert(view); if (view->ssd_enabled && !view->fullscreen) { undecorate(view); decorate(view); } } void view_destroy(struct view *view) { assert(view); struct server *server = view->server; bool need_cursor_update = false; if (view->toplevel_handle) { wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle); } if (server->grabbed_view == view) { /* Application got killed while moving around */ server->input_mode = LAB_INPUT_STATE_PASSTHROUGH; server->grabbed_view = NULL; need_cursor_update = true; } if (server->focused_view == view) { server->focused_view = NULL; need_cursor_update = true; } if (server->seat.pressed.view == view) { seat_reset_pressed(&server->seat); } osd_on_view_destroy(view); undecorate(view); if (view->scene_tree) { wlr_scene_node_destroy(&view->scene_tree->node); view->scene_tree = NULL; } /* * The layer-shell top-layer is disabled when an application is running * in fullscreen mode, so if that's the case, we have to re-enable it * here. */ if (view->fullscreen) { struct output *output = output_from_wlr_output(server, view->fullscreen); uint32_t top = ZWLR_LAYER_SHELL_V1_LAYER_TOP; wlr_scene_node_set_enabled(&output->layer_tree[top]->node, true); } /* If we spawned a window menu, close it */ if (server->menu_current && server->menu_current->triggered_by_view == view) { menu_close_root(server); } /* Remove view from server->views */ wl_list_remove(&view->link); free(view); if (need_cursor_update) { cursor_update_focus(server); } }