57 lines
2.4 KiB
C
57 lines
2.4 KiB
C
#ifndef _SWAY_MOSAIC_H
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#define _SWAY_MOSAIC_H
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#include <stdbool.h>
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#include "list.h"
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struct sway_container;
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// CONTRACT: children are ordered Sway tiling containers; scroll_x is a
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// logical canvas coordinate, independent of focus and rendered geometry.
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struct mosaic_row_state {
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double scroll_x;
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// STEP20B temporary sizing policy. Zero selects the current 640 px
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// minimum; this is not a stable Mosaic layout API.
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int minimum_cell_width;
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struct sway_container *focused;
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};
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struct mosaic_row {
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list_t *children;
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bool owns_children;
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struct mosaic_row_state state;
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};
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struct mosaic_workspace_state {
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list_t *rows; // struct mosaic_row; owns rows, never their containers.
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int active_row;
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};
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// The first row may borrow workspace->tiling. The caller keeps that list alive
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// until mosaic_state_destroy; later rows own only their lists, not children.
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// NULL input/allocation failure returns NULL. Destroy accepts NULL.
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struct mosaic_workspace_state *mosaic_state_create(list_t *first_children);
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void mosaic_state_destroy(struct mosaic_workspace_state *state);
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// Model operation only: wiring another row into Sway's tree and scene is later
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// work. NULL/allocation failure returns NULL; child ownership stays with Sway.
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struct mosaic_row *mosaic_state_add_row(struct mosaic_workspace_state *state);
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// Rejects an invalid row index without changing active_row.
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bool mosaic_state_select_row(struct mosaic_workspace_state *state, int index);
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// Insertion/removal must occur from a Sway tree mutation path, which also
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// maintains parent/workspace pointers, representation and transaction dirtiness.
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int mosaic_row_insertion_index(const struct mosaic_row *row);
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void mosaic_row_insert_after_focus(struct mosaic_row *row,
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struct sway_container *child);
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void mosaic_row_remove(struct mosaic_row *row, struct sway_container *child);
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// Rejects a child not present in this row, preserving the last valid focus.
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bool mosaic_row_focus(struct mosaic_row *row, struct sway_container *child);
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// Rejects negative/NaN/infinite logical positions without changing the row.
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bool mosaic_row_set_scroll(struct mosaic_row *row, double scroll_x);
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// Clamp the logical camera to the currently arranged canvas. The viewport and
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// row contents remain owned by Sway; this helper never mutates child order.
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int mosaic_row_max_scroll(const struct mosaic_row *row, int viewport_width,
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int gaps);
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void mosaic_row_clamp_scroll(struct mosaic_row *row, int viewport_width,
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int gaps);
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#endif
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