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cairo: replace cairo with pixman in decos, particles and modules

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All decoration, particle and module interfaces now takes a
pixman_image_t parameter, and all drawing is done using pixman APIs.

The wayland/xcb backends implement a new interface functions,
get_pixman_image(), that should return a pixman image instance that is
suitable for rendering.

In the wayland backend, the image uses the same backing data as the
cairo surface.

In the XCB backend, we create a new image each time, and then blit it
to the cairo surface at commit time.
This commit is contained in:
Daniel Eklöf 2019-09-22 01:56:58 +02:00
parent 95385863ae
commit c11fee4ce3
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GPG key ID: 5BBD4992C116573F
24 changed files with 162 additions and 141 deletions
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40
config.c
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@ -13,6 +13,10 @@
#include "module.h"
#include "plugin.h"
#define LOG_MODULE "config"
#define LOG_ENABLE_DBG 0
#include "log.h"
static uint8_t
hex_nibble(char hex)
{
@ -36,7 +40,7 @@ hex_byte(const char hex[2])
return upper << 4 | lower;
}
struct rgba
pixman_color_t
conf_to_color(const struct yml_node *node)
{
const char *hex = yml_value_as_string(node);
@ -44,30 +48,26 @@ conf_to_color(const struct yml_node *node)
assert(hex != NULL);
assert(strlen(hex) == 8);
uint8_t red = hex_byte(&hex[0]);
uint8_t green = hex_byte(&hex[2]);
uint8_t blue = hex_byte(&hex[4]);
uint8_t alpha = hex_byte(&hex[6]);
uint16_t red = hex_byte(&hex[0]);
uint16_t green = hex_byte(&hex[2]);
uint16_t blue = hex_byte(&hex[4]);
uint16_t alpha = hex_byte(&hex[6]);
struct rgba rgba = {
(double)red / 255.0,
(double)green / 255.0,
(double)blue / 255.0,
(double)alpha / 255.0
alpha |= alpha << 8;
int alpha_div = 0xffff / alpha;
return (pixman_color_t){
.red = (red << 8 | red) / alpha_div,
.green = (green << 8 | green) / alpha_div,
.blue = (blue << 8 | blue) / alpha_div,
.alpha = alpha,
};
assert(rgba.red >= 0.0 && rgba.red <= 1.0);
assert(rgba.green >= 0.0 && rgba.green <= 1.0);
assert(rgba.blue >= 0.0 && rgba.blue <= 1.0);
assert(rgba.alpha >= 0.0 && rgba.alpha <= 1.0);
return rgba;
}
struct font *
conf_to_font(const struct yml_node *node)
{
return font_from_name(yml_value_as_string(node));;
return font_from_name(yml_value_as_string(node));
}
struct deco *
@ -155,7 +155,7 @@ conf_to_particle(const struct yml_node *node, struct conf_inherit inherited)
*/
struct font *font = font_node != NULL
? conf_to_font(font_node) : font_clone(inherited.font);
struct rgba foreground = foreground_node != NULL
pixman_color_t foreground = foreground_node != NULL
? conf_to_color(foreground_node) : inherited.foreground;
/* Instantiate base/common particle */
@ -264,7 +264,7 @@ conf_to_bar(const struct yml_node *bar, enum bar_backend backend)
* foreground color at top-level.
*/
struct font *font = font_from_name("sans");
struct rgba foreground = (struct rgba){1.0, 1.0, 1.0, 1.0}; /* White */
pixman_color_t foreground = {0xffff, 0xffff, 0xffff, 0xffff}; /* White */
const struct yml_node *font_node = yml_get_value(bar, "font");
if (font_node != NULL) {