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f129571779
struct ssd_part and struct node_descriptor seem to have essentially the same purpose: tag a wlr_scene_node with some extra data indicating what we're using it for. Also, as with enum ssd_part_type (now lab_node_type), ssd_part is used for several types of nodes that are not part of SSD. So instead of the current chaining (node_descriptor -> ssd_part), let's flatten/unify the two structs. In detail: - First, merge node_descriptor_type into lab_node_type. - Add a separate view pointer in node_descriptor, since in the case of SSD buttons we need separate view and button data pointers. - Rename ssd_part_button to simply ssd_button. It no longer contains an ssd_part as base. - Add node_try_ssd_button_from_node() which replaces node_ssd_part_from_node() + button_try_from_ssd_part(). - Factor out ssd_button_free() to be called in node descriptor destroy. - Finally, get_cursor_context() needs a little reorganization to handle the unified structs. Overall, this simplifies the code a bit, and in my opinion makes it easier to understand. No functional change intended.
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <assert.h>
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#include "config/rcxml.h"
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#include "common/list.h"
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#include "common/mem.h"
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#include "node.h"
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#include "scaled-buffer/scaled-icon-buffer.h"
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#include "scaled-buffer/scaled-img-buffer.h"
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#include "ssd.h"
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#include "ssd-internal.h"
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/* Internal API */
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struct ssd_button *
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attach_ssd_button(struct wl_list *button_parts, enum lab_node_type type,
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struct wlr_scene_tree *parent,
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struct lab_img *imgs[LAB_BS_ALL + 1],
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int x, int y, struct view *view)
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{
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struct wlr_scene_tree *root = wlr_scene_tree_create(parent);
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wlr_scene_node_set_position(&root->node, x, y);
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assert(node_type_contains(LAB_NODE_BUTTON, type));
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struct ssd_button *button = znew(*button);
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button->node = &root->node;
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button->type = type;
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node_descriptor_create(&root->node, type, view, button);
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wl_list_append(button_parts, &button->link);
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/* Hitbox */
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float invisible[4] = { 0, 0, 0, 0 };
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wlr_scene_rect_create(root, rc.theme->window_button_width,
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rc.theme->window_button_height, invisible);
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/* Icons */
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int button_width = rc.theme->window_button_width;
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int button_height = rc.theme->window_button_height;
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/*
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* Ensure a small amount of horizontal padding within the button
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* area (2px on each side with the default 26px button width).
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* A new theme setting could be added to configure this. Using
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* an existing setting (padding.width or window.button.spacing)
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* was considered, but these settings have distinct purposes
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* already and are zero by default.
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*/
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int icon_padding = button_width / 10;
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if (type == LAB_NODE_BUTTON_WINDOW_ICON) {
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struct scaled_icon_buffer *icon_buffer =
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scaled_icon_buffer_create(root, view->server,
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button_width - 2 * icon_padding, button_height);
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assert(icon_buffer);
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struct wlr_scene_node *icon_node = &icon_buffer->scene_buffer->node;
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scaled_icon_buffer_set_view(icon_buffer, view);
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wlr_scene_node_set_position(icon_node, icon_padding, 0);
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button->window_icon = icon_buffer;
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} else {
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for (uint8_t state_set = LAB_BS_DEFAULT;
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state_set <= LAB_BS_ALL; state_set++) {
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if (!imgs[state_set]) {
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continue;
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}
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struct scaled_img_buffer *img_buffer = scaled_img_buffer_create(
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root, imgs[state_set], rc.theme->window_button_width,
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rc.theme->window_button_height);
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assert(img_buffer);
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struct wlr_scene_node *icon_node = &img_buffer->scene_buffer->node;
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wlr_scene_node_set_enabled(icon_node, false);
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button->img_buffers[state_set] = img_buffer;
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}
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/* Initially show non-hover, non-toggled, unrounded variant */
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wlr_scene_node_set_enabled(
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&button->img_buffers[LAB_BS_DEFAULT]->scene_buffer->node, true);
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}
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return button;
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}
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/* called from node descriptor destroy */
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void ssd_button_free(struct ssd_button *button)
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{
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wl_list_remove(&button->link);
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free(button);
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}
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