Merge pull request #296 from progandy/pixbuf

Support for more image formats for wallpapers with gdk-pixbuf (#282)
This commit is contained in:
Drew DeVault 2015-12-08 07:09:21 -05:00
commit 7ed204eb02
5 changed files with 169 additions and 1 deletions

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@ -18,6 +18,7 @@ arch:
- mesa
- pango
- cairo
- gdk-pixbuf2
script:
- "bash .ci/build.sh"

47
CMake/FindGdkPixbuf.cmake Normal file
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@ -0,0 +1,47 @@
# - Try to find the gdk-pixbuf-2.0 library
# Once done this will define
#
# GDK_PIXBUF_FOUND - system has gdk-pixbuf-2.0
# GDK_PIXBUF_INCLUDE_DIRS - the gdk-pixbuf-2.0 include directory
# GDK_PIXBUF_LIBRARIES - Link these to use gdk-pixbuf-2.0
#
# Define GDK_PIXBUF_MIN_VERSION for which version desired.
#
INCLUDE(FindPkgConfig)
IF(GdkPixbuf_FIND_REQUIRED)
SET(_pkgconfig_REQUIRED "REQUIRED")
ELSE(GdkPixbuf_FIND_REQUIRED)
SET(_pkgconfig_REQUIRED "")
ENDIF(GdkPixbuf_FIND_REQUIRED)
IF(GDK_PIXBUF_MIN_VERSION)
PKG_SEARCH_MODULE(GDK_PIXBUF ${_pkgconfig_REQUIRED} "gdk-pixbuf-2.0>=${GDK_PIXBUF_MIN_VERSION}")
ELSE(GDK_PIXBUF_MIN_VERSION)
PKG_SEARCH_MODULE(GDK_PIXBUF ${_pkgconfig_REQUIRED} "gdk-pixbuf-2.0")
ENDIF(GDK_PIXBUF_MIN_VERSION)
IF(NOT GDK_PIXBUF_FOUND AND NOT PKG_CONFIG_FOUND)
FIND_PATH(GDK_PIXBUF_INCLUDE_DIRS gdk-pixbuf/gdk-pixbuf.h)
FIND_LIBRARY(GDK_PIXBUF_LIBRARIES gdk_pixbuf-2.0)
# Report results
IF(GDK_PIXBUF_LIBRARIES AND GDK_PIXBUF_INCLUDE_DIRS)
SET(GDK_PIXBUF_FOUND 1)
IF(NOT GdkPixbuf_FIND_QUIETLY)
MESSAGE(STATUS "Found GdkPixbuf: ${GDK_PIXBUF_LIBRARIES}")
ENDIF(NOT GdkPixbuf_FIND_QUIETLY)
ELSE(GDK_PIXBUF_LIBRARIES AND GDK_PIXBUF_INCLUDE_DIRS)
IF(GdkPixbuf_FIND_REQUIRED)
MESSAGE(SEND_ERROR "Could not find GdkPixbuf")
ELSE(GdkPixbuf_FIND_REQUIRED)
IF(NOT GdkPixbuf_FIND_QUIETLY)
MESSAGE(STATUS "Could not find GdkPixbuf")
ENDIF(NOT GdkPixbuf_FIND_QUIETLY)
ENDIF(GdkPixbuf_FIND_REQUIRED)
ENDIF(GDK_PIXBUF_LIBRARIES AND GDK_PIXBUF_INCLUDE_DIRS)
ENDIF(NOT GDK_PIXBUF_FOUND AND NOT PKG_CONFIG_FOUND)
# Hide advanced variables from CMake GUIs
MARK_AS_ADVANCED(GDK_PIXBUF_LIBRARIES GDK_PIXBUF_INCLUDE_DIRS)

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@ -48,6 +48,7 @@ find_package(Pango REQUIRED)
find_package(WLC REQUIRED)
find_package(Wayland REQUIRED)
find_package(XKBCommon REQUIRED)
find_package(GdkPixbuf REQUIRED)
include(Manpage)

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@ -2,6 +2,7 @@ include_directories(
${PROTOCOLS_INCLUDE_DIRS}
${WAYLAND_CLIENT_INCLUDE_DIR}
${CAIRO_INCLUDE_DIRS}
${GDK_PIXBUF_INCLUDE_DIRS}
${PANGO_INCLUDE_DIRS}
)
@ -15,6 +16,7 @@ target_link_libraries(swaybg
${WAYLAND_CLIENT_LIBRARIES}
${WAYLAND_CURSOR_LIBRARIES}
${CAIRO_LIBRARIES}
${GDK_PIXBUF_LIBRARIES}
${PANGO_LIBRARIES}
m
)

View file

@ -4,6 +4,7 @@
#include <wayland-client.h>
#include <time.h>
#include <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "client/window.h"
#include "client/registry.h"
#include "log.h"
@ -21,6 +22,111 @@ enum scaling_mode {
SCALING_MODE_TILE,
};
#ifndef GDK_PIXBUF_CHECK_VERSION
#define GDK_PIXBUF_CHECK_VERSION(major,minor,micro) \
(GDK_PIXBUF_MAJOR > (major) || \
(GDK_PIXBUF_MAJOR == (major) && GDK_PIXBUF_MINOR > (minor)) || \
(GDK_PIXBUF_MAJOR == (major) && GDK_PIXBUF_MINOR == (minor) && \
GDK_PIXBUF_MICRO >= (micro)))
#endif
cairo_surface_t* __gdk_cairo_image_surface_create_from_pixbuf(const GdkPixbuf *gdkbuf)
{
int chan = gdk_pixbuf_get_n_channels(gdkbuf);
if (chan < 3) return NULL;
#if GDK_PIXBUF_CHECK_VERSION(2,32,0)
const guint8* gdkpix = gdk_pixbuf_read_pixels(gdkbuf);
#else
const guint8* gdkpix = gdk_pixbuf_get_pixels(gdkbuf);
#endif
if (!gdkpix) {
return NULL;
}
gint w = gdk_pixbuf_get_width(gdkbuf);
gint h = gdk_pixbuf_get_height(gdkbuf);
int stride = gdk_pixbuf_get_rowstride(gdkbuf);
cairo_format_t fmt = (chan == 3) ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32;
cairo_surface_t * cs = cairo_image_surface_create (fmt, w, h);
cairo_surface_flush (cs);
if ( !cs || cairo_surface_status(cs) != CAIRO_STATUS_SUCCESS) {
return NULL;
}
int cstride = cairo_image_surface_get_stride(cs);
unsigned char * cpix = cairo_image_surface_get_data(cs);
if (chan == 3) {
int i;
for (i = h; i; --i) {
const guint8 *gp = gdkpix;
unsigned char *cp = cpix;
const guint8* end = gp + 3*w;
while (gp < end) {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
cp[0] = gp[2];
cp[1] = gp[1];
cp[2] = gp[0];
#else
cp[1] = gp[0];
cp[2] = gp[1];
cp[3] = gp[2];
#endif
gp += 3;
cp += 4;
}
gdkpix += stride;
cpix += cstride;
}
} else {
/* premul-color = alpha/255 * color/255 * 255 = (alpha*color)/255
* (z/255) = z/256 * 256/255 = z/256 (1 + 1/255)
* = z/256 + (z/256)/255 = (z + z/255)/256
* # recurse once
* = (z + (z + z/255)/256)/256
* = (z + z/256 + z/256/255) / 256
* # only use 16bit uint operations, loose some precision,
* # result is floored.
* -> (z + z>>8)>>8
* # add 0x80/255 = 0.5 to convert floor to round
* => (z+0x80 + (z+0x80)>>8 ) >> 8
* ------
* tested as equal to lround(z/255.0) for uint z in [0..0xfe02]
*/
#define PREMUL_ALPHA(x,a,b,z) G_STMT_START { z = a * b + 0x80; x = (z + (z >> 8)) >> 8; } G_STMT_END
int i;
for (i = h; i; --i) {
const guint8 *gp = gdkpix;
unsigned char *cp = cpix;
const guint8* end = gp + 4*w;
guint z1, z2, z3;
while (gp < end) {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
PREMUL_ALPHA(cp[0], gp[2], gp[3], z1);
PREMUL_ALPHA(cp[1], gp[1], gp[3], z2);
PREMUL_ALPHA(cp[2], gp[0], gp[3], z3);
cp[3] = gp[3];
#else
PREMUL_ALPHA(cp[1], gp[0], gp[3], z1);
PREMUL_ALPHA(cp[2], gp[1], gp[3], z2);
PREMUL_ALPHA(cp[3], gp[2], gp[3], z3);
cp[0] = gp[3];
#endif
gp += 4;
cp += 4;
}
gdkpix += stride;
cpix += cstride;
}
#undef PREMUL_ALPHA
}
cairo_surface_mark_dirty(cs);
return cs;
}
void sway_terminate(void) {
int i;
for (i = 0; i < surfaces->length; ++i) {
@ -56,7 +162,16 @@ int main(int argc, const char **argv) {
desktop_shell_set_background(registry->desktop_shell, output->output, window->surface);
list_add(surfaces, window);
cairo_surface_t *image = cairo_image_surface_create_from_png(argv[2]);
GError *err=NULL;
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(argv[2],&err);
if (!pixbuf) {
sway_abort("Failed to load background image.");
}
cairo_surface_t *image=__gdk_cairo_image_surface_create_from_pixbuf(pixbuf);
g_object_unref(pixbuf);
if (!image) {
sway_abort("Failed to read background image.");
}
double width = cairo_image_surface_get_width(image);
double height = cairo_image_surface_get_height(image);
@ -148,6 +263,8 @@ int main(int argc, const char **argv) {
}
}
cairo_surface_destroy(image);
while (wl_display_dispatch(registry->display) != -1);
for (i = 0; i < surfaces->length; ++i) {