104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
|
|
* vim:ts=4:sw=4:expandtab
|
|
*
|
|
* © 2015 Ingo Bürk and contributors (see also: LICENSE)
|
|
*
|
|
* draw.h: Utility for drawing.
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
#ifdef CAIRO_SUPPORT
|
|
#include <cairo/cairo-xcb.h>
|
|
#endif
|
|
|
|
#ifdef CAIRO_SUPPORT
|
|
/* We need to flush cairo surfaces twice to avoid an assertion bug. See #1989
|
|
* and https://bugs.freedesktop.org/show_bug.cgi?id=92455. */
|
|
#define CAIRO_SURFACE_FLUSH(surface) \
|
|
do { \
|
|
cairo_surface_flush(surface); \
|
|
cairo_surface_flush(surface); \
|
|
} while (0)
|
|
#endif
|
|
|
|
/* Represents a color split by color channel. */
|
|
typedef struct color_t {
|
|
double red;
|
|
double green;
|
|
double blue;
|
|
|
|
/* For compatibility, we also store the colorpixel for now. */
|
|
uint32_t colorpixel;
|
|
} color_t;
|
|
|
|
/* A wrapper grouping an XCB drawable and both a graphics context
|
|
* and the corresponding cairo objects representing it. */
|
|
typedef struct surface_t {
|
|
/* The drawable which is being represented. */
|
|
xcb_drawable_t id;
|
|
|
|
/* A classic XCB graphics context. */
|
|
xcb_gcontext_t gc;
|
|
|
|
int width;
|
|
int height;
|
|
|
|
#ifdef CAIRO_SUPPORT
|
|
/* A cairo surface representing the drawable. */
|
|
cairo_surface_t *surface;
|
|
|
|
/* The cairo object representing the drawale. In general,
|
|
* this is what one should use for any drawing operation. */
|
|
cairo_t *cr;
|
|
#endif
|
|
} surface_t;
|
|
|
|
/**
|
|
* Initialize the surface to represent the given drawable.
|
|
*
|
|
*/
|
|
void draw_util_surface_init(surface_t *surface, xcb_drawable_t drawable, int width, int height);
|
|
|
|
/**
|
|
* Destroys the surface.
|
|
*
|
|
*/
|
|
void draw_util_surface_free(surface_t *surface);
|
|
|
|
/**
|
|
* Parses the given color in hex format to an internal color representation.
|
|
* Note that the input must begin with a hash sign, e.g., "#3fbc59".
|
|
*
|
|
*/
|
|
color_t draw_util_hex_to_color(const char *color);
|
|
|
|
/**
|
|
* Draw the given text using libi3.
|
|
* This function also marks the surface dirty which is needed if other means of
|
|
* drawing are used. This will be the case when using XCB to draw text.
|
|
*
|
|
*/
|
|
void draw_util_text(i3String *text, surface_t *surface, color_t fg_color, color_t bg_color, int x, int y, int max_width);
|
|
|
|
/**
|
|
* Draws a filled rectangle.
|
|
* This function is a convenience wrapper and takes care of flushing the
|
|
* surface as well as restoring the cairo state.
|
|
*
|
|
*/
|
|
void draw_util_rectangle(surface_t *surface, color_t color, double x, double y, double w, double h);
|
|
|
|
/**
|
|
* Clears a surface with the given color.
|
|
*
|
|
*/
|
|
void draw_util_clear_surface(surface_t *surface, color_t color);
|
|
|
|
/**
|
|
* Copies a surface onto another surface.
|
|
*
|
|
*/
|
|
void draw_util_copy_surface(surface_t *src, surface_t *dest, double src_x, double src_y,
|
|
double dest_x, double dest_y, double width, double height);
|