tabs and tab overview

sixel.h

@@ -0,0 +1,50 @@
+#pragma once
+
+#include "terminal.h"
+
+#define SIXEL_MAX_COLORS 1024u
+#define SIXEL_MAX_WIDTH 10000u
+#define SIXEL_MAX_HEIGHT 10000u
+
+typedef void (*sixel_put)(struct terminal *term, uint8_t c);
+
+void sixel_fini(struct terminal *term);
+
+sixel_put sixel_init(struct terminal *term, int p1, int p2, int p3);
+void sixel_unhook(struct terminal *term);
+
+void sixel_destroy(struct sixel *sixel);
+void sixel_destroy_all(struct terminal *term);
+
+void sixel_scroll_up(struct terminal *term, int rows);
+void sixel_scroll_down(struct terminal *term, int rows);
+
+void sixel_cell_size_changed(struct terminal *term);
+void sixel_sync_cache(const struct terminal *term, struct sixel *sixel);
+
+void sixel_reflow_grid(struct terminal *term, struct grid *grid);
+
+/* Shortcut for sixel_reflow_grid(normal) + sixel_reflow_grid(alt) */
+void sixel_reflow(struct terminal *term);
+
+/*
+ * Remove sixel data from the specified location. Used when printing
+ * or erasing characters, and when emitting new sixel images, to
+ * remove sixel data that would otherwise be rendered on-top.
+ *
+ * Row numbers are relative to the current grid offset
+ */
+void sixel_overwrite_by_rectangle(
+    struct terminal *term, int row, int col, int height, int width);
+void sixel_overwrite_by_row(struct terminal *term, int row, int col, int width);
+void sixel_overwrite_at_cursor(struct terminal *term, int width);
+
+void sixel_colors_report_current(struct terminal *term);
+void sixel_colors_reset(struct terminal *term);
+void sixel_colors_set(struct terminal *term, unsigned count);
+void sixel_colors_report_max(struct terminal *term);
+
+void sixel_geometry_report_current(struct terminal *term);
+void sixel_geometry_reset(struct terminal *term);
+void sixel_geometry_set(struct terminal *term, unsigned width, unsigned height);
+void sixel_geometry_report_max(struct terminal *term);