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f347a818e3
Our codebase for ssd scenes has grown with a lot of technical debts: - We needed to call `ssd_get_part()` everywhere to get the scene node of a ssd part. We then needed to cast it to `wlr_scene_rect` and `wlr_scene_buffer`. This bloated our codebase and even blocked duplicated button types in `<titlebar><layout>`. - `ssd_get_part_type()` was a dirty hack. It compared parent, grandparent and grandgrandparent of a node with each subtree in the ssd to get the part type of the node. To resolve this issues, this commit changes how ssd scenes are managed: - Access scene rects and scene buffers just as a member of `struct ssd`. - `ssd_part` is now a attachment to a scene node that can be accessed via node_descriptor->data, with a new node-descriptor type `LAB_NODE_DESC_SSD_PART`. `LAB_NODE_DESC_SSD_BUTTON` is unified into it. Now the scene graph under ssd->tree looks like below. The parentheses indicate the type of ssd_part attached to the node: ssd->tree (LAB_SSD_NONE) +--titlebar (LAB_SSD_PART_TITLEBAR) | +--inactive | | +--background bar | | +--left corner | | +--right corner | | +--title (LAB_SSD_PART_TITLE) | | +--iconify button (LAB_SSD_BUTTON_ICONIFY) | | | +--normal close icon image | | | +--hovered close icon image | | | +--... | | +--window icon (LAB_SSD_BUTTON_WINDOW_ICON) | | | +--window icon image | | +--... | +--active | +--... +--border | +--inactive | | +--top | | +--... | +--active | +--top | +--... +--shadow | +--inactive | | +--top | | +--... | +--active | +--top | +--... +--extents +--top +--... When hovering on SSD, `get_cursor_context()` traverses this scene node from the leaf. If it finds a `ssd_part` attached to the node, it returns `ssd_part_type` that represents the resizing direction, button types or `Title`/`Titlebar`.
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include "node.h"
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#include <assert.h>
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#include <stdlib.h>
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#include "common/mem.h"
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static void
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descriptor_destroy(struct node_descriptor *node_descriptor)
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{
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if (!node_descriptor) {
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return;
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}
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wl_list_remove(&node_descriptor->destroy.link);
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free(node_descriptor);
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}
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static void
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handle_node_destroy(struct wl_listener *listener, void *data)
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{
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struct node_descriptor *node_descriptor =
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wl_container_of(listener, node_descriptor, destroy);
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descriptor_destroy(node_descriptor);
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}
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void
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node_descriptor_create(struct wlr_scene_node *scene_node,
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enum node_descriptor_type type, void *data)
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{
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struct node_descriptor *node_descriptor = znew(*node_descriptor);
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node_descriptor->type = type;
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node_descriptor->data = data;
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node_descriptor->destroy.notify = handle_node_destroy;
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wl_signal_add(&scene_node->events.destroy, &node_descriptor->destroy);
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scene_node->data = node_descriptor;
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}
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struct view *
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node_view_from_node(struct wlr_scene_node *wlr_scene_node)
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{
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assert(wlr_scene_node->data);
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struct node_descriptor *node_descriptor = wlr_scene_node->data;
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assert(node_descriptor->type == LAB_NODE_DESC_VIEW
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|| node_descriptor->type == LAB_NODE_DESC_XDG_POPUP);
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return (struct view *)node_descriptor->data;
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}
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struct lab_layer_surface *
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node_layer_surface_from_node(struct wlr_scene_node *wlr_scene_node)
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{
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assert(wlr_scene_node->data);
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struct node_descriptor *node_descriptor = wlr_scene_node->data;
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assert(node_descriptor->type == LAB_NODE_DESC_LAYER_SURFACE);
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return (struct lab_layer_surface *)node_descriptor->data;
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}
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struct lab_layer_popup *
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node_layer_popup_from_node(struct wlr_scene_node *wlr_scene_node)
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{
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assert(wlr_scene_node->data);
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struct node_descriptor *node_descriptor = wlr_scene_node->data;
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assert(node_descriptor->type == LAB_NODE_DESC_LAYER_POPUP);
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return (struct lab_layer_popup *)node_descriptor->data;
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}
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struct menuitem *
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node_menuitem_from_node(struct wlr_scene_node *wlr_scene_node)
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{
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assert(wlr_scene_node->data);
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struct node_descriptor *node_descriptor = wlr_scene_node->data;
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assert(node_descriptor->type == LAB_NODE_DESC_MENUITEM);
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return (struct menuitem *)node_descriptor->data;
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}
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struct ssd_part *
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node_ssd_part_from_node(struct wlr_scene_node *wlr_scene_node)
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{
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assert(wlr_scene_node->data);
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struct node_descriptor *node_descriptor = wlr_scene_node->data;
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assert(node_descriptor->type == LAB_NODE_DESC_SSD_PART);
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return (struct ssd_part *)node_descriptor->data;
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}
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struct scaled_scene_buffer *
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node_scaled_scene_buffer_from_node(struct wlr_scene_node *wlr_scene_node)
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{
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assert(wlr_scene_node->data);
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struct node_descriptor *node_descriptor = wlr_scene_node->data;
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assert(node_descriptor->type == LAB_NODE_DESC_SCALED_SCENE_BUFFER);
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return (struct scaled_scene_buffer *)node_descriptor->data;
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}
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