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#ifndef _OVERLAYS_H
#define _OVERLAYS_H
#include <X11/Xlib.h>
#include <X11/extensions/Xrender.h>
typedef struct _vwm_t vwm_t;
typedef struct _vwm_xwindow_t vwm_xwindow_t;
/* everything needed by the per-window overlay's context */
typedef struct _vwm_overlay_t {
Pixmap text_pixmap; /* pixmap for overlayed text (kept around for XDrawText usage) */
Picture text_picture; /* picture representation of text_pixmap */
Picture shadow_picture; /* text shadow layer */
Picture grapha_picture; /* graph A layer */
Picture graphb_picture; /* graph B layer */
Picture tmp_picture; /* 1 row worth of temporary picture space */
Picture picture; /* overlay picture derived from the pixmap, for render compositing */
int width; /* current width of the overlay */
int height; /* current height of the overlay */
int phase; /* current position within the (horizontally scrolling) graphs */
int heirarchy_end; /* row where the process heirarchy currently ends */
int snowflakes_cnt; /* count of snowflaked rows (reset to zero to truncate snowflakes display) */
int gen_last_composed; /* the last composed vmon generation */
int redraw_needed; /* if a redraw is required (like when the window is resized...) */
} vwm_overlay_t;
typedef struct _vwm_overlays_t vwm_overlays_t;
int vwm_overlay_xwin_composed_height(vwm_t *vwm, vwm_xwindow_t *xwin);
void vwm_overlay_xwin_reset_snowflakes(vwm_t *vwm, vwm_xwindow_t *xwin);
void vwm_overlay_xwin_create(vwm_t *vwm, vwm_xwindow_t *xwin);
void vwm_overlay_xwin_destroy(vwm_t *vwm, vwm_xwindow_t *xwin);
void vwm_overlay_xwin_compose(vwm_t *vwm, vwm_xwindow_t *xwin);
vwm_overlays_t * vwm_overlays_create(vwm_t *vwm);
void vwm_overlays_destroy(vwm_overlays_t *overlays);
void vwm_overlays_rate_increase(vwm_overlays_t *overlays);
void vwm_overlays_rate_decrease(vwm_overlays_t *overlays);
int vwm_overlays_update(vwm_overlays_t *overlays, int *desired_delay);
#endif
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