29c3422e05
Rework PangoCairo context initialisation, so we don't leak either the Pango layout, or any of the derived objects it creates. Signed-off-by: Daniel Stone <daniels@collabora.com>
684 lines
18 KiB
C
684 lines
18 KiB
C
/*
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* Copyright © 2008 Kristian Høgsberg
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* Copyright © 2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <wayland-util.h>
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#include <cairo.h>
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#include "cairo-util.h"
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#include "shared/helpers.h"
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#include "image-loader.h"
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#include <libweston/config-parser.h>
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#ifdef HAVE_PANGO
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#include <pango/pangocairo.h>
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#endif
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void
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surface_flush_device(cairo_surface_t *surface)
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{
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cairo_device_t *device;
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device = cairo_surface_get_device(surface);
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if (device)
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cairo_device_flush(device);
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}
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static int
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blur_surface(cairo_surface_t *surface, int margin)
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{
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int32_t width, height, stride, x, y, z, w;
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uint8_t *src, *dst;
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uint32_t *s, *d, a, p;
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int i, j, k, size, half;
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uint32_t kernel[71];
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double f;
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size = ARRAY_LENGTH(kernel);
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width = cairo_image_surface_get_width(surface);
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height = cairo_image_surface_get_height(surface);
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stride = cairo_image_surface_get_stride(surface);
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src = cairo_image_surface_get_data(surface);
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dst = malloc(height * stride);
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if (dst == NULL)
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return -1;
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half = size / 2;
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a = 0;
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for (i = 0; i < size; i++) {
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f = (i - half);
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kernel[i] = exp(- f * f / ARRAY_LENGTH(kernel)) * 10000;
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a += kernel[i];
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}
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for (i = 0; i < height; i++) {
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s = (uint32_t *) (src + i * stride);
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d = (uint32_t *) (dst + i * stride);
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for (j = 0; j < width; j++) {
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if (margin < j && j < width - margin) {
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d[j] = s[j];
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continue;
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}
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x = 0;
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y = 0;
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z = 0;
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w = 0;
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for (k = 0; k < size; k++) {
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if (j - half + k < 0 || j - half + k >= width)
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continue;
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p = s[j - half + k];
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x += (p >> 24) * kernel[k];
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y += ((p >> 16) & 0xff) * kernel[k];
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z += ((p >> 8) & 0xff) * kernel[k];
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w += (p & 0xff) * kernel[k];
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}
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d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
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}
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}
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for (i = 0; i < height; i++) {
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s = (uint32_t *) (dst + i * stride);
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d = (uint32_t *) (src + i * stride);
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for (j = 0; j < width; j++) {
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if (margin <= i && i < height - margin) {
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d[j] = s[j];
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continue;
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}
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x = 0;
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y = 0;
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z = 0;
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w = 0;
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for (k = 0; k < size; k++) {
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if (i - half + k < 0 || i - half + k >= height)
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continue;
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s = (uint32_t *) (dst + (i - half + k) * stride);
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p = s[j];
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x += (p >> 24) * kernel[k];
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y += ((p >> 16) & 0xff) * kernel[k];
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z += ((p >> 8) & 0xff) * kernel[k];
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w += (p & 0xff) * kernel[k];
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}
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d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
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}
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}
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free(dst);
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cairo_surface_mark_dirty(surface);
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return 0;
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}
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void
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render_shadow(cairo_t *cr, cairo_surface_t *surface,
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int x, int y, int width, int height, int margin, int top_margin)
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{
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cairo_pattern_t *pattern;
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cairo_matrix_t matrix;
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int i, fx, fy, shadow_height, shadow_width;
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cairo_set_source_rgba(cr, 0, 0, 0, 0.45);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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pattern = cairo_pattern_create_for_surface (surface);
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cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
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for (i = 0; i < 4; i++) {
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/* when fy is set, then we are working with lower corners,
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* when fx is set, then we are working with right corners
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*
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* 00 ------- 01
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* | |
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* | |
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* 10 ------- 11
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*/
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fx = i & 1;
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fy = i >> 1;
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cairo_matrix_init_translate(&matrix,
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-x + fx * (128 - width),
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-y + fy * (128 - height));
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cairo_pattern_set_matrix(pattern, &matrix);
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shadow_width = margin;
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shadow_height = fy ? margin : top_margin;
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/* if the shadows together are greater than the surface, we need
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* to fix it - set the shadow size to the half of
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* the size of surface. Also handle the case when the size is
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* not divisible by 2. In that case we need one part of the
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* shadow to be one pixel greater. !fy or !fx, respectively,
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* will do the work.
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*/
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if (height < 2 * shadow_height)
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shadow_height = (height + !fy) / 2;
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if (width < 2 * shadow_width)
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shadow_width = (width + !fx) / 2;
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cairo_reset_clip(cr);
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cairo_rectangle(cr,
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x + fx * (width - shadow_width),
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y + fy * (height - shadow_height),
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shadow_width, shadow_height);
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cairo_clip (cr);
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cairo_mask(cr, pattern);
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}
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shadow_width = width - 2 * margin;
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shadow_height = top_margin;
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if (height < 2 * shadow_height)
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shadow_height = height / 2;
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if (shadow_width > 0 && shadow_height) {
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/* Top stretch */
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cairo_matrix_init_translate(&matrix, 60, 0);
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cairo_matrix_scale(&matrix, 8.0 / width, 1);
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cairo_matrix_translate(&matrix, -x - width / 2, -y);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_rectangle(cr, x + margin, y, shadow_width, shadow_height);
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cairo_reset_clip(cr);
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cairo_rectangle(cr,
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x + margin, y,
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shadow_width, shadow_height);
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cairo_clip (cr);
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cairo_mask(cr, pattern);
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/* Bottom stretch */
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cairo_matrix_translate(&matrix, 0, -height + 128);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_reset_clip(cr);
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cairo_rectangle(cr, x + margin, y + height - margin,
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shadow_width, margin);
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cairo_clip (cr);
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cairo_mask(cr, pattern);
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}
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shadow_width = margin;
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if (width < 2 * shadow_width)
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shadow_width = width / 2;
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shadow_height = height - margin - top_margin;
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/* if height is smaller than sum of margins,
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* then the shadow is already done by the corners */
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if (shadow_height > 0 && shadow_width) {
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/* Left stretch */
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cairo_matrix_init_translate(&matrix, 0, 60);
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cairo_matrix_scale(&matrix, 1, 8.0 / height);
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cairo_matrix_translate(&matrix, -x, -y - height / 2);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_reset_clip(cr);
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cairo_rectangle(cr, x, y + top_margin,
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shadow_width, shadow_height);
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cairo_clip (cr);
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cairo_mask(cr, pattern);
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/* Right stretch */
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cairo_matrix_translate(&matrix, -width + 128, 0);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_rectangle(cr, x + width - shadow_width, y + top_margin,
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shadow_width, shadow_height);
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cairo_reset_clip(cr);
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cairo_clip (cr);
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cairo_mask(cr, pattern);
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}
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cairo_pattern_destroy(pattern);
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cairo_reset_clip(cr);
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}
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void
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tile_source(cairo_t *cr, cairo_surface_t *surface,
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int x, int y, int width, int height, int margin, int top_margin)
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{
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cairo_pattern_t *pattern;
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cairo_matrix_t matrix;
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int i, fx, fy, vmargin;
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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pattern = cairo_pattern_create_for_surface (surface);
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cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
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cairo_set_source(cr, pattern);
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for (i = 0; i < 4; i++) {
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fx = i & 1;
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fy = i >> 1;
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cairo_matrix_init_translate(&matrix,
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-x + fx * (128 - width),
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-y + fy * (128 - height));
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cairo_pattern_set_matrix(pattern, &matrix);
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if (fy)
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vmargin = margin;
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else
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vmargin = top_margin;
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cairo_rectangle(cr,
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x + fx * (width - margin),
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y + fy * (height - vmargin),
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margin, vmargin);
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cairo_fill(cr);
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}
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/* Top stretch */
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cairo_matrix_init_translate(&matrix, 60, 0);
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cairo_matrix_scale(&matrix, 8.0 / (width - 2 * margin), 1);
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cairo_matrix_translate(&matrix, -x - width / 2, -y);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_rectangle(cr, x + margin, y, width - 2 * margin, top_margin);
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cairo_fill(cr);
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/* Bottom stretch */
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cairo_matrix_translate(&matrix, 0, -height + 128);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_rectangle(cr, x + margin, y + height - margin,
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width - 2 * margin, margin);
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cairo_fill(cr);
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/* Left stretch */
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cairo_matrix_init_translate(&matrix, 0, 60);
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cairo_matrix_scale(&matrix, 1, 8.0 / (height - margin - top_margin));
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cairo_matrix_translate(&matrix, -x, -y - height / 2);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_rectangle(cr, x, y + top_margin,
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margin, height - margin - top_margin);
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cairo_fill(cr);
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/* Right stretch */
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cairo_matrix_translate(&matrix, -width + 128, 0);
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cairo_pattern_set_matrix(pattern, &matrix);
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cairo_rectangle(cr, x + width - margin, y + top_margin,
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margin, height - margin - top_margin);
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cairo_fill(cr);
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cairo_pattern_destroy(pattern);
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cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
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}
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void
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rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
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{
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cairo_move_to(cr, x0, y0 + radius);
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cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
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cairo_line_to(cr, x1 - radius, y0);
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cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
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cairo_line_to(cr, x1, y1 - radius);
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cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
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cairo_line_to(cr, x0 + radius, y1);
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cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
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cairo_close_path(cr);
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}
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static void
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loaded_cairo_surface_destructor(void *data)
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{
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pixman_image_t *image = data;
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pixman_image_unref(image);
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}
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static const cairo_user_data_key_t weston_cairo_util_load_cairo_surface_key;
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cairo_surface_t *
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load_cairo_surface(const char *filename)
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{
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cairo_surface_t *surface;
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cairo_status_t ret;
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pixman_image_t *image;
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int width, height, stride;
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void *data;
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image = load_image(filename);
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if (image == NULL) {
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return NULL;
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}
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data = pixman_image_get_data(image);
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width = pixman_image_get_width(image);
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height = pixman_image_get_height(image);
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stride = pixman_image_get_stride(image);
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surface = cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
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width, height, stride);
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ret = cairo_surface_status(surface);
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if (ret != CAIRO_STATUS_SUCCESS)
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goto fail;
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ret = cairo_surface_set_user_data(surface,
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&weston_cairo_util_load_cairo_surface_key,
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image,
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loaded_cairo_surface_destructor);
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if (ret != CAIRO_STATUS_SUCCESS)
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goto fail;
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return surface;
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fail:
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cairo_surface_destroy(surface);
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pixman_image_unref(image);
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return NULL;
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}
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void
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theme_set_background_source(struct theme *t, cairo_t *cr, uint32_t flags)
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{
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cairo_pattern_t *pattern;
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if (flags & THEME_FRAME_ACTIVE) {
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pattern = cairo_pattern_create_linear(16, 16, 16, 112);
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cairo_pattern_add_color_stop_rgb(pattern, 0.0, 1.0, 1.0, 1.0);
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cairo_pattern_add_color_stop_rgb(pattern, 0.2, 0.8, 0.8, 0.8);
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cairo_set_source(cr, pattern);
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cairo_pattern_destroy(pattern);
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} else {
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cairo_set_source_rgba(cr, 0.75, 0.75, 0.75, 1);
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}
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}
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struct theme *
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theme_create(void)
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{
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struct theme *t;
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cairo_t *cr;
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t = malloc(sizeof *t);
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if (t == NULL)
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return NULL;
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t->margin = 32;
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t->width = 6;
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t->titlebar_height = 27;
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t->frame_radius = 3;
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t->shadow = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
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cr = cairo_create(t->shadow);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_set_source_rgba(cr, 0, 0, 0, 1);
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rounded_rect(cr, 32, 32, 96, 96, t->frame_radius);
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cairo_fill(cr);
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if (cairo_status (cr) != CAIRO_STATUS_SUCCESS)
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goto err_shadow;
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cairo_destroy(cr);
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if (blur_surface(t->shadow, 64) == -1)
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goto err_shadow;
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t->active_frame =
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cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
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cr = cairo_create(t->active_frame);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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theme_set_background_source(t, cr, THEME_FRAME_ACTIVE);
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rounded_rect(cr, 0, 0, 128, 128, t->frame_radius);
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cairo_fill(cr);
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if (cairo_status(cr) != CAIRO_STATUS_SUCCESS)
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goto err_active_frame;
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cairo_destroy(cr);
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t->inactive_frame =
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cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
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cr = cairo_create(t->inactive_frame);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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theme_set_background_source(t, cr, 0);
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rounded_rect(cr, 0, 0, 128, 128, t->frame_radius);
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cairo_fill(cr);
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if (cairo_status (cr) != CAIRO_STATUS_SUCCESS)
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goto err_inactive_frame;
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cairo_destroy(cr);
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return t;
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err_inactive_frame:
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cairo_surface_destroy(t->inactive_frame);
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err_active_frame:
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cairo_surface_destroy(t->active_frame);
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err_shadow:
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cairo_surface_destroy(t->shadow);
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free(t);
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return NULL;
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}
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void
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theme_destroy(struct theme *t)
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{
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cairo_surface_destroy(t->active_frame);
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cairo_surface_destroy(t->inactive_frame);
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cairo_surface_destroy(t->shadow);
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free(t);
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}
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#ifdef HAVE_PANGO
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static PangoLayout *
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create_layout(cairo_t *cr, const char *title)
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{
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PangoFontMap *fontmap;
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PangoContext *context;
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PangoLayout *layout;
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PangoFontDescription *desc;
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|
|
fontmap = pango_cairo_font_map_new();
|
|
context = pango_font_map_create_context(fontmap);
|
|
g_object_unref(fontmap);
|
|
pango_cairo_font_map_set_default(NULL);
|
|
pango_cairo_update_context(cr, context);
|
|
layout = pango_layout_new(context);
|
|
g_object_unref(context);
|
|
|
|
if (title) {
|
|
pango_layout_set_text(layout, title, -1);
|
|
desc = pango_font_description_from_string("sans-serif Bold 10");
|
|
pango_layout_set_font_description(layout, desc);
|
|
pango_font_description_free(desc);
|
|
}
|
|
|
|
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
|
|
pango_layout_set_alignment(layout, PANGO_ALIGN_LEFT);
|
|
pango_layout_set_auto_dir (layout, FALSE);
|
|
pango_layout_set_single_paragraph_mode (layout, TRUE);
|
|
pango_layout_set_width (layout, -1);
|
|
|
|
return layout;
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PANGO
|
|
#define SHOW_TEXT(cr) \
|
|
pango_cairo_show_layout(cr, title_layout)
|
|
#else
|
|
#define SHOW_TEXT(cr) \
|
|
cairo_show_text(cr, title)
|
|
#endif
|
|
|
|
void
|
|
theme_render_frame(struct theme *t,
|
|
cairo_t *cr, int width, int height,
|
|
const char *title, cairo_rectangle_int_t *title_rect,
|
|
struct wl_list *buttons, uint32_t flags)
|
|
{
|
|
cairo_surface_t *source;
|
|
int x, y, margin, top_margin;
|
|
int text_width, text_height;
|
|
|
|
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
|
|
cairo_set_source_rgba(cr, 0, 0, 0, 0);
|
|
cairo_paint(cr);
|
|
|
|
if (flags & THEME_FRAME_MAXIMIZED)
|
|
margin = 0;
|
|
else {
|
|
render_shadow(cr, t->shadow,
|
|
2, 2, width + 8, height + 8,
|
|
64, 64);
|
|
margin = t->margin;
|
|
}
|
|
|
|
if (flags & THEME_FRAME_ACTIVE)
|
|
source = t->active_frame;
|
|
else
|
|
source = t->inactive_frame;
|
|
|
|
if (title || !wl_list_empty(buttons))
|
|
top_margin = t->titlebar_height;
|
|
else
|
|
top_margin = t->width;
|
|
|
|
tile_source(cr, source,
|
|
margin, margin,
|
|
width - margin * 2, height - margin * 2,
|
|
t->width, top_margin);
|
|
|
|
if (title || !wl_list_empty(buttons)) {
|
|
|
|
cairo_rectangle (cr, title_rect->x, title_rect->y,
|
|
title_rect->width, title_rect->height);
|
|
cairo_clip(cr);
|
|
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
|
|
|
|
#ifdef HAVE_PANGO
|
|
PangoLayout *title_layout;
|
|
PangoRectangle logical;
|
|
|
|
cairo_save(cr);
|
|
|
|
title_layout = create_layout(cr, title);
|
|
|
|
pango_layout_get_pixel_extents (title_layout, NULL, &logical);
|
|
text_width = MIN(title_rect->width, logical.width);
|
|
text_height = logical.height;
|
|
if (text_width < logical.width)
|
|
pango_layout_set_width (title_layout, text_width * PANGO_SCALE);
|
|
|
|
#else
|
|
cairo_text_extents_t extents;
|
|
cairo_font_extents_t font_extents;
|
|
|
|
cairo_select_font_face(cr, "sans-serif",
|
|
CAIRO_FONT_SLANT_NORMAL,
|
|
CAIRO_FONT_WEIGHT_BOLD);
|
|
cairo_set_font_size(cr, 14);
|
|
cairo_text_extents(cr, title, &extents);
|
|
cairo_font_extents (cr, &font_extents);
|
|
text_width = extents.width;
|
|
text_height = font_extents.descent - font_extents.ascent;
|
|
#endif
|
|
|
|
x = (width - text_width) / 2;
|
|
y = margin + (t->titlebar_height - text_height) / 2;
|
|
if (x < title_rect->x)
|
|
x = title_rect->x;
|
|
else if (x + text_width > (title_rect->x + title_rect->width))
|
|
x = (title_rect->x + title_rect->width) - text_width;
|
|
|
|
if (flags & THEME_FRAME_ACTIVE) {
|
|
cairo_move_to(cr, x + 1, y + 1);
|
|
cairo_set_source_rgb(cr, 1, 1, 1);
|
|
SHOW_TEXT(cr);
|
|
cairo_move_to(cr, x, y);
|
|
cairo_set_source_rgb(cr, 0, 0, 0);
|
|
SHOW_TEXT(cr);
|
|
} else {
|
|
cairo_move_to(cr, x, y);
|
|
cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
|
|
SHOW_TEXT(cr);
|
|
}
|
|
|
|
#ifdef HAVE_PANGO
|
|
cairo_restore(cr);
|
|
g_object_unref(title_layout);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
enum theme_location
|
|
theme_get_location(struct theme *t, int x, int y,
|
|
int width, int height, int flags)
|
|
{
|
|
int vlocation, hlocation, location;
|
|
int margin, top_margin, grip_size;
|
|
|
|
if (flags & THEME_FRAME_MAXIMIZED) {
|
|
margin = 0;
|
|
grip_size = 0;
|
|
} else {
|
|
margin = t->margin;
|
|
grip_size = 8;
|
|
}
|
|
|
|
if (flags & THEME_FRAME_NO_TITLE)
|
|
top_margin = t->width;
|
|
else
|
|
top_margin = t->titlebar_height;
|
|
|
|
if (x < margin)
|
|
hlocation = THEME_LOCATION_EXTERIOR;
|
|
else if (x < margin + grip_size)
|
|
hlocation = THEME_LOCATION_RESIZING_LEFT;
|
|
else if (x < width - margin - grip_size)
|
|
hlocation = THEME_LOCATION_INTERIOR;
|
|
else if (x < width - margin)
|
|
hlocation = THEME_LOCATION_RESIZING_RIGHT;
|
|
else
|
|
hlocation = THEME_LOCATION_EXTERIOR;
|
|
|
|
if (y < margin)
|
|
vlocation = THEME_LOCATION_EXTERIOR;
|
|
else if (y < margin + grip_size)
|
|
vlocation = THEME_LOCATION_RESIZING_TOP;
|
|
else if (y < height - margin - grip_size)
|
|
vlocation = THEME_LOCATION_INTERIOR;
|
|
else if (y < height - margin)
|
|
vlocation = THEME_LOCATION_RESIZING_BOTTOM;
|
|
else
|
|
vlocation = THEME_LOCATION_EXTERIOR;
|
|
|
|
location = vlocation | hlocation;
|
|
if (location & THEME_LOCATION_EXTERIOR)
|
|
location = THEME_LOCATION_EXTERIOR;
|
|
if (location == THEME_LOCATION_INTERIOR &&
|
|
y < margin + top_margin)
|
|
location = THEME_LOCATION_TITLEBAR;
|
|
else if (location == THEME_LOCATION_INTERIOR)
|
|
location = THEME_LOCATION_CLIENT_AREA;
|
|
|
|
return location;
|
|
}
|