mirrors/weston
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
f00460771e
weston/shared/cairo-util.c
Daniel Stone c228e23b05 configure.ac: Enable AC_USE_SYSTEM_EXTENSIONS 
AC_USE_SYSTEM_EXTENSIONS enables _XOPEN_SOURCE, _GNU_SOURCE and similar
macros to expose the largest extent of functionality supported by the
underlying system.  This is required since these macros are often
limiting rather than merely additive, e.g. _XOPEN_SOURCE will actually
on some systems hide declarations which are not part of the X/Open spec.

Since this goes into config.h rather than the command line, ensure all
source is consistently including config.h before anything else,
including system libraries.  This doesn't need to be guarded by a
HAVE_CONFIG_H ifdef, which was only ever a hangover from the X.Org
modular transition.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>

[pq: rebased and converted more files]
2013-06-05 01:16:34 -04:00

485 lines
13 KiB
C
Raw Blame History

/*
* Copyright © 2008 Kristian Høgsberg
* Copyright © 2012 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include "config.h"
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <cairo.h>
#include "cairo-util.h"
#include "image-loader.h"
#include "config-parser.h"
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
void
surface_flush_device(cairo_surface_t *surface)
{
cairo_device_t *device;
device = cairo_surface_get_device(surface);
if (device)
cairo_device_flush(device);
}
void
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);
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);
}
void
tile_mask(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, vmargin;
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++) {
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);
if (fy)
vmargin = margin;
else
vmargin = top_margin;
cairo_reset_clip(cr);
cairo_rectangle(cr,
x + fx * (width - margin),
y + fy * (height - vmargin),
margin, vmargin);
cairo_clip (cr);
cairo_mask(cr, pattern);
}
/* 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, width - 2 * margin, margin);
cairo_reset_clip(cr);
cairo_rectangle(cr,
x + margin,
y,
width - 2 * margin, margin);
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,
width - 2 * margin, margin);
cairo_clip (cr);
cairo_mask(cr, pattern);
/* 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 + margin, margin, height - 2 * margin);
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 - margin, y + margin,
margin, height - 2 * margin);
cairo_reset_clip(cr);
cairo_clip (cr);
cairo_mask(cr, pattern);
cairo_pattern_destroy(pattern);
cairo_reset_clip(cr);
}
void
tile_source(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, vmargin;
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
pattern = cairo_pattern_create_for_surface (surface);
cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
cairo_set_source(cr, pattern);
cairo_pattern_destroy(pattern);
for (i = 0; i < 4; i++) {
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);
if (fy)
vmargin = margin;
else
vmargin = top_margin;
cairo_rectangle(cr,
x + fx * (width - margin),
y + fy * (height - vmargin),
margin, vmargin);
cairo_fill(cr);
}
/* Top stretch */
cairo_matrix_init_translate(&matrix, 60, 0);
cairo_matrix_scale(&matrix, 8.0 / (width - 2 * margin), 1);
cairo_matrix_translate(&matrix, -x - width / 2, -y);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_rectangle(cr, x + margin, y, width - 2 * margin, top_margin);
cairo_fill(cr);
/* Bottom stretch */
cairo_matrix_translate(&matrix, 0, -height + 128);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_rectangle(cr, x + margin, y + height - margin,
width - 2 * margin, margin);
cairo_fill(cr);
/* Left stretch */
cairo_matrix_init_translate(&matrix, 0, 60);
cairo_matrix_scale(&matrix, 1, 8.0 / (height - margin - top_margin));
cairo_matrix_translate(&matrix, -x, -y - height / 2);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_rectangle(cr, x, y + top_margin,
margin, height - margin - top_margin);
cairo_fill(cr);
/* Right stretch */
cairo_matrix_translate(&matrix, -width + 128, 0);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_rectangle(cr, x + width - margin, y + top_margin,
margin, height - margin - top_margin);
cairo_fill(cr);
}
void
rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
{
cairo_move_to(cr, x0, y0 + radius);
cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
cairo_line_to(cr, x1 - radius, y0);
cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
cairo_line_to(cr, x1, y1 - radius);
cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
cairo_line_to(cr, x0 + radius, y1);
cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
cairo_close_path(cr);
}
cairo_surface_t *
load_cairo_surface(const char *filename)
{
pixman_image_t *image;
int width, height, stride;
void *data;
image = load_image(filename);
if (image == NULL) {
return NULL;
}
data = pixman_image_get_data(image);
width = pixman_image_get_width(image);
height = pixman_image_get_height(image);
stride = pixman_image_get_stride(image);
return cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32,
width, height, stride);
}
struct theme *
theme_create(void)
{
struct theme *t;
cairo_t *cr;
cairo_pattern_t *pattern;
t = malloc(sizeof *t);
t->margin = 32;
t->width = 6;
t->titlebar_height = 27;
t->frame_radius = 3;
t->shadow = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
cr = cairo_create(t->shadow);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0, 0, 0, 1);
rounded_rect(cr, 32, 32, 96, 96, t->frame_radius);
cairo_fill(cr);
cairo_destroy(cr);
blur_surface(t->shadow, 64);
t->active_frame =
cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
cr = cairo_create(t->active_frame);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
pattern = cairo_pattern_create_linear(16, 16, 16, 112);
cairo_pattern_add_color_stop_rgb(pattern, 0.0, 1.0, 1.0, 1.0);
cairo_pattern_add_color_stop_rgb(pattern, 0.2, 0.8, 0.8, 0.8);
cairo_set_source(cr, pattern);
cairo_pattern_destroy(pattern);
rounded_rect(cr, 0, 0, 128, 128, t->frame_radius);
cairo_fill(cr);
cairo_destroy(cr);
t->inactive_frame =
cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
cr = cairo_create(t->inactive_frame);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0.75, 0.75, 0.75, 1);
rounded_rect(cr, 0, 0, 128, 128, t->frame_radius);
cairo_fill(cr);
cairo_destroy(cr);
return t;
}
void
theme_destroy(struct theme *t)
{
cairo_surface_destroy(t->active_frame);
cairo_surface_destroy(t->inactive_frame);
cairo_surface_destroy(t->shadow);
free(t);
}
void
theme_render_frame(struct theme *t,
cairo_t *cr, int width, int height,
const char *title, uint32_t flags)
{
cairo_text_extents_t extents;
cairo_font_extents_t font_extents;
cairo_surface_t *source;
int x, y, margin;
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 {
cairo_set_source_rgba(cr, 0, 0, 0, 0.45);
tile_mask(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;
tile_source(cr, source,
margin, margin,
width - margin * 2, height - margin * 2,
t->width, t->titlebar_height);
cairo_rectangle (cr, margin + t->width, margin,
width - (margin + t->width) * 2,
t->titlebar_height - t->width);
cairo_clip(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_select_font_face(cr, "sans",
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);
x = (width - extents.width) / 2;
y = margin +
(t->titlebar_height -
font_extents.ascent - font_extents.descent) / 2 +
font_extents.ascent;
if (flags & THEME_FRAME_ACTIVE) {
cairo_move_to(cr, x + 1, y + 1);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_show_text(cr, title);
cairo_move_to(cr, x, y);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_show_text(cr, title);
} else {
cairo_move_to(cr, x, y);
cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
cairo_show_text(cr, title);
}
}
enum theme_location
theme_get_location(struct theme *t, int x, int y,
int width, int height, int flags)
{
int vlocation, hlocation, location;
const int grip_size = 8;
int margin;
margin = (flags & THEME_FRAME_MAXIMIZED) ? 0 : t->margin;
if (x < margin)
hlocation = THEME_LOCATION_EXTERIOR;
else if (margin <= x && 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 (margin <= y && 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 + t->titlebar_height)
location = THEME_LOCATION_TITLEBAR;
else if (location == THEME_LOCATION_INTERIOR)
location = THEME_LOCATION_CLIENT_AREA;
return location;
}
Reference in New Issue View Git Blame Copy Permalink