sway/common/cairo.c

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2018-03-27 19:25:25 +00:00
#include <stdint.h>
#include <cairo.h>
#include "cairo_util.h"
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void cairo_set_source_u32(cairo_t *cairo, uint32_t color) {
cairo_set_source_rgba(cairo,
(color >> (3*8) & 0xFF) / 255.0,
(color >> (2*8) & 0xFF) / 255.0,
(color >> (1*8) & 0xFF) / 255.0,
(color >> (0*8) & 0xFF) / 255.0);
}
cairo_subpixel_order_t to_cairo_subpixel_order(enum wl_output_subpixel subpixel) {
switch (subpixel) {
case WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB:
return CAIRO_SUBPIXEL_ORDER_RGB;
case WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR:
return CAIRO_SUBPIXEL_ORDER_BGR;
case WL_OUTPUT_SUBPIXEL_VERTICAL_RGB:
return CAIRO_SUBPIXEL_ORDER_VRGB;
case WL_OUTPUT_SUBPIXEL_VERTICAL_BGR:
return CAIRO_SUBPIXEL_ORDER_VBGR;
default:
return CAIRO_SUBPIXEL_ORDER_DEFAULT;
}
return CAIRO_SUBPIXEL_ORDER_DEFAULT;
}
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cairo_surface_t *cairo_image_surface_scale(cairo_surface_t *image,
int width, int height) {
int image_width = cairo_image_surface_get_width(image);
int image_height = cairo_image_surface_get_height(image);
cairo_surface_t *new =
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_t *cairo = cairo_create(new);
cairo_scale(cairo, (double)width / image_width,
(double)height / image_height);
cairo_set_source_surface(cairo, image, 0, 0);
cairo_paint(cairo);
cairo_destroy(cairo);
return new;
}