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-rw-r--r--libdecor/src/plugins/common/libdecor-cairo-blur.c255
1 files changed, 0 insertions, 255 deletions
diff --git a/libdecor/src/plugins/common/libdecor-cairo-blur.c b/libdecor/src/plugins/common/libdecor-cairo-blur.c
deleted file mode 100644
index 2cddc7a23..000000000
--- a/libdecor/src/plugins/common/libdecor-cairo-blur.c
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- * Copyright © 2008 Kristian Høgsberg
- * Copyright © 2012 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial
- * portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-/*
- * functions 'blur_surface' and 'render_shadow' from weston project:
- * https://gitlab.freedesktop.org/wayland/weston/raw/master/shared/cairo-util.c
- */
-
-#include "libdecor-cairo-blur.h"
-#include <stdint.h>
-#include <stdlib.h>
-#include <math.h>
-
-/**
- * Compile-time computation of number of items in a hardcoded array.
- *
- * @param a the array being measured.
- * @return the number of items hardcoded into the array.
- */
-#ifndef ARRAY_LENGTH
-#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
-#endif
-
-int
-blur_surface(cairo_surface_t *surface, int margin)
-{
- int32_t width, height, stride, x, y, z, w;
- uint8_t *src, *dst;
- uint32_t *s, *d, a, p;
- int i, j, k, size, half;
- uint32_t kernel[71];
- double f;
-
- size = ARRAY_LENGTH(kernel);
- width = cairo_image_surface_get_width(surface);
- height = cairo_image_surface_get_height(surface);
- stride = cairo_image_surface_get_stride(surface);
- src = cairo_image_surface_get_data(surface);
-
- dst = malloc(height * stride);
- if (dst == NULL)
- return -1;
-
- half = size / 2;
- a = 0;
- for (i = 0; i < size; i++) {
- f = (i - half);
- kernel[i] = exp(- f * f / ARRAY_LENGTH(kernel)) * 10000;
- a += kernel[i];
- }
-
- for (i = 0; i < height; i++) {
- s = (uint32_t *) (src + i * stride);
- d = (uint32_t *) (dst + i * stride);
- for (j = 0; j < width; j++) {
- if (margin < j && j < width - margin) {
- d[j] = s[j];
- continue;
- }
-
- x = 0;
- y = 0;
- z = 0;
- w = 0;
- for (k = 0; k < size; k++) {
- if (j - half + k < 0 || j - half + k >= width)
- continue;
- p = s[j - half + k];
-
- x += (p >> 24) * kernel[k];
- y += ((p >> 16) & 0xff) * kernel[k];
- z += ((p >> 8) & 0xff) * kernel[k];
- w += (p & 0xff) * kernel[k];
- }
- d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
- }
- }
-
- for (i = 0; i < height; i++) {
- s = (uint32_t *) (dst + i * stride);
- d = (uint32_t *) (src + i * stride);
- for (j = 0; j < width; j++) {
- if (margin <= i && i < height - margin) {
- d[j] = s[j];
- continue;
- }
-
- x = 0;
- y = 0;
- z = 0;
- w = 0;
- for (k = 0; k < size; k++) {
- if (i - half + k < 0 || i - half + k >= height)
- continue;
- s = (uint32_t *) (dst + (i - half + k) * stride);
- p = s[j];
-
- x += (p >> 24) * kernel[k];
- y += ((p >> 16) & 0xff) * kernel[k];
- z += ((p >> 8) & 0xff) * kernel[k];
- w += (p & 0xff) * kernel[k];
- }
- d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
- }
- }
-
- free(dst);
- cairo_surface_mark_dirty(surface);
-
- return 0;
-}
-
-void
-render_shadow(cairo_t *cr, cairo_surface_t *surface,
- int x, int y, int width, int height, int margin, int top_margin)
-{
- cairo_pattern_t *pattern;
- cairo_matrix_t matrix;
- int i, fx, fy, shadow_height, shadow_width;
-
- cairo_set_source_rgba(cr, 0, 0, 0, 0.45);
- cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
- pattern = cairo_pattern_create_for_surface (surface);
- cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
-
- for (i = 0; i < 4; i++) {
- /* when fy is set, then we are working with lower corners,
- * when fx is set, then we are working with right corners
- *
- * 00 ------- 01
- * | |
- * | |
- * 10 ------- 11
- */
- fx = i & 1;
- fy = i >> 1;
-
- cairo_matrix_init_translate(&matrix,
- -x + fx * (128 - width),
- -y + fy * (128 - height));
- cairo_pattern_set_matrix(pattern, &matrix);
-
- shadow_width = margin;
- shadow_height = fy ? margin : top_margin;
-
- /* if the shadows together are greater than the surface, we need
- * to fix it - set the shadow size to the half of
- * the size of surface. Also handle the case when the size is
- * not divisible by 2. In that case we need one part of the
- * shadow to be one pixel greater. !fy or !fx, respectively,
- * will do the work.
- */
- if (height < 2 * shadow_height)
- shadow_height = (height + !fy) / 2;
-
- if (width < 2 * shadow_width)
- shadow_width = (width + !fx) / 2;
-
- cairo_reset_clip(cr);
- cairo_rectangle(cr,
- x + fx * (width - shadow_width),
- y + fy * (height - shadow_height),
- shadow_width, shadow_height);
- cairo_clip (cr);
- cairo_mask(cr, pattern);
- }
-
-
- shadow_width = width - 2 * margin;
- shadow_height = top_margin;
- if (height < 2 * shadow_height)
- shadow_height = height / 2;
-
- if (shadow_width > 0 && shadow_height) {
- /* Top stretch */
- cairo_matrix_init_translate(&matrix, 60, 0);
- cairo_matrix_scale(&matrix, 8.0 / width, 1);
- cairo_matrix_translate(&matrix, -x - width / 2, -y);
- cairo_pattern_set_matrix(pattern, &matrix);
- cairo_rectangle(cr, x + margin, y, shadow_width, shadow_height);
-
- cairo_reset_clip(cr);
- cairo_rectangle(cr,
- x + margin, y,
- shadow_width, shadow_height);
- cairo_clip (cr);
- cairo_mask(cr, pattern);
-
- /* Bottom stretch */
- cairo_matrix_translate(&matrix, 0, -height + 128);
- cairo_pattern_set_matrix(pattern, &matrix);
-
- cairo_reset_clip(cr);
- cairo_rectangle(cr, x + margin, y + height - margin,
- shadow_width, margin);
- cairo_clip (cr);
- cairo_mask(cr, pattern);
- }
-
- shadow_width = margin;
- if (width < 2 * shadow_width)
- shadow_width = width / 2;
-
- shadow_height = height - margin - top_margin;
-
- /* if height is smaller than sum of margins,
- * then the shadow is already done by the corners */
- if (shadow_height > 0 && shadow_width) {
- /* Left stretch */
- cairo_matrix_init_translate(&matrix, 0, 60);
- cairo_matrix_scale(&matrix, 1, 8.0 / height);
- cairo_matrix_translate(&matrix, -x, -y - height / 2);
- cairo_pattern_set_matrix(pattern, &matrix);
- cairo_reset_clip(cr);
- cairo_rectangle(cr, x, y + top_margin,
- shadow_width, shadow_height);
- cairo_clip (cr);
- cairo_mask(cr, pattern);
-
- /* Right stretch */
- cairo_matrix_translate(&matrix, -width + 128, 0);
- cairo_pattern_set_matrix(pattern, &matrix);
- cairo_rectangle(cr, x + width - shadow_width, y + top_margin,
- shadow_width, shadow_height);
- cairo_reset_clip(cr);
- cairo_clip (cr);
- cairo_mask(cr, pattern);
- }
-
- cairo_pattern_destroy(pattern);
- cairo_reset_clip(cr);
-}
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