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common: Drop unused render_background_image

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And the associated background_mode enum.
This commit is contained in:
Manuel Stoeckl 2023-11-23 07:54:23 -05:00 committed by Simon Ser
parent 47e6a1164c
commit 39b9c0d6ba
2 changed files with 3 additions and 100 deletions
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88
common/background-image.c
View file

@ -1,29 +1,12 @@
#include <assert.h>
#include "background-image.h"
#include "cairo_util.h"
#include "config.h"
#include "log.h"
#if HAVE_GDK_PIXBUF
#include <gdk-pixbuf/gdk-pixbuf.h>
#endif
enum background_mode parse_background_mode(const char *mode) {
if (strcmp(mode, "stretch") == 0) {
return BACKGROUND_MODE_STRETCH;
} else if (strcmp(mode, "fill") == 0) {
return BACKGROUND_MODE_FILL;
} else if (strcmp(mode, "fit") == 0) {
return BACKGROUND_MODE_FIT;
} else if (strcmp(mode, "center") == 0) {
return BACKGROUND_MODE_CENTER;
} else if (strcmp(mode, "tile") == 0) {
return BACKGROUND_MODE_TILE;
} else if (strcmp(mode, "solid_color") == 0) {
return BACKGROUND_MODE_SOLID_COLOR;
}
sway_log(SWAY_ERROR, "Unsupported background mode: %s", mode);
return BACKGROUND_MODE_INVALID;
}
#if HAVE_GDK_PIXBUF
static cairo_surface_t* gdk_cairo_image_surface_create_from_pixbuf(
const GdkPixbuf *gdkbuf) {
@ -151,70 +134,3 @@ cairo_surface_t *load_background_image(const char *path) {
}
return image;
}
void render_background_image(cairo_t *cairo, cairo_surface_t *image,
enum background_mode mode, int buffer_width, int buffer_height) {
double width = cairo_image_surface_get_width(image);
double height = cairo_image_surface_get_height(image);
cairo_save(cairo);
switch (mode) {
case BACKGROUND_MODE_STRETCH:
cairo_scale(cairo,
(double)buffer_width / width,
(double)buffer_height / height);
cairo_set_source_surface(cairo, image, 0, 0);
break;
case BACKGROUND_MODE_FILL: {
double window_ratio = (double)buffer_width / buffer_height;
double bg_ratio = width / height;
if (window_ratio > bg_ratio) {
double scale = (double)buffer_width / width;
cairo_scale(cairo, scale, scale);
cairo_set_source_surface(cairo, image,
0, (double)buffer_height / 2 / scale - height / 2);
} else {
double scale = (double)buffer_height / height;
cairo_scale(cairo, scale, scale);
cairo_set_source_surface(cairo, image,
(double)buffer_width / 2 / scale - width / 2, 0);
}
break;
}
case BACKGROUND_MODE_FIT: {
double window_ratio = (double)buffer_width / buffer_height;
double bg_ratio = width / height;
if (window_ratio > bg_ratio) {
double scale = (double)buffer_height / height;
cairo_scale(cairo, scale, scale);
cairo_set_source_surface(cairo, image,
(double)buffer_width / 2 / scale - width / 2, 0);
} else {
double scale = (double)buffer_width / width;
cairo_scale(cairo, scale, scale);
cairo_set_source_surface(cairo, image,
0, (double)buffer_height / 2 / scale - height / 2);
}
break;
}
case BACKGROUND_MODE_CENTER:
cairo_set_source_surface(cairo, image,
(double)buffer_width / 2 - width / 2,
(double)buffer_height / 2 - height / 2);
break;
case BACKGROUND_MODE_TILE: {
cairo_pattern_t *pattern = cairo_pattern_create_for_surface(image);
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
cairo_set_source(cairo, pattern);
break;
}
case BACKGROUND_MODE_SOLID_COLOR:
case BACKGROUND_MODE_INVALID:
assert(0);
break;
}
cairo_paint(cairo);
cairo_restore(cairo);
}

15
include/background-image.h
View file

@ -1,20 +1,7 @@
#ifndef _SWAY_BACKGROUND_IMAGE_H
#define _SWAY_BACKGROUND_IMAGE_H
#include "cairo_util.h"
#include <cairo.h>
enum background_mode {
BACKGROUND_MODE_STRETCH,
BACKGROUND_MODE_FILL,
BACKGROUND_MODE_FIT,
BACKGROUND_MODE_CENTER,
BACKGROUND_MODE_TILE,
BACKGROUND_MODE_SOLID_COLOR,
BACKGROUND_MODE_INVALID,
};
enum background_mode parse_background_mode(const char *mode);
cairo_surface_t *load_background_image(const char *path);
void render_background_image(cairo_t *cairo, cairo_surface_t *image,
enum background_mode mode, int buffer_width, int buffer_height);
#endif