callisto-debian/gimp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

libgimpwidgets: port GimpPickButton color picking to cairo

Browse Source
This commit is contained in:
Michael Natterer
2010-08-08 16:10:14 +02:00
parent 789cc05baf
commit 10574e8f22
1 changed files with 20 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
libgimpwidgets/gimppickbutton.c
View File

@ -25,6 +25,7 @@
#include "gimpwidgetstypes.h" #include "gimpwidgetstypes.h"
#include "gimpcairo-utils.h"
#include "gimphelpui.h" #include "gimphelpui.h"
#include "gimppickbutton.h" #include "gimppickbutton.h"
#include "gimpstock.h" #include "gimpstock.h"
@ -387,25 +388,28 @@ gimp_pick_button_pick (GdkScreen *screen,
gint y_root, gint y_root,
GimpPickButton *button) GimpPickButton *button)
{ {
GdkColormap *colormap = gdk_screen_get_system_colormap (screen); GdkWindow *root_window = gdk_screen_get_root_window (screen);
GdkWindow *root_window = gdk_screen_get_root_window (screen); cairo_surface_t *image;
GdkImage *image; cairo_t *cr;
guint32 pixel; guchar *data;
GdkColor color; guchar color[3];
GimpRGB rgb; GimpRGB rgb;
image = gdk_drawable_get_image (GDK_DRAWABLE (root_window), image = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 1, 1);
x_root, y_root, 1, 1);
pixel = gdk_image_get_pixel (image, 0, 0);
g_object_unref (image);
gdk_colormap_query_color (colormap, pixel, &color); cr = cairo_create (image);
gimp_rgba_set (&rgb, gdk_cairo_set_source_pixmap (cr, root_window, -x_root, -y_root);
color.red / 65535.0, cairo_paint (cr);
color.green / 65535.0,
color.blue / 65535.0, cairo_destroy (cr);
1.0);
data = cairo_image_surface_get_data (image);
GIMP_CAIRO_RGB24_GET_PIXEL (data, color[0], color[1], color[2]);
cairo_surface_destroy (image);
gimp_rgba_set_uchar (&rgb, color[0], color[1], color[2], 1.0);
g_signal_emit (button, pick_button_signals[COLOR_PICKED], 0, &rgb); g_signal_emit (button, pick_button_signals[COLOR_PICKED], 0, &rgb);
} }