356 lines
11 KiB
C
356 lines
11 KiB
C
|
/* LIBPIKA - The PIKA Library
|
||
|
|
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
|
||
|
|
*
|
||
|
|
* pikapickbutton.c
|
||
|
|
* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
|
||
|
|
*
|
||
|
|
* based on gtk+/gtk/gtkcolorsel.c
|
||
|
|
*
|
||
|
|
* This library is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Library General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with this library. If not, see
|
||
|
|
* <https://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "config.h"
|
||
|
|
|
||
|
|
#include <gegl.h>
|
||
|
|
#include <gtk/gtk.h>
|
||
|
|
#include <gdk/gdkkeysyms.h>
|
||
|
|
|
||
|
|
#ifdef G_OS_WIN32
|
||
|
|
#define WIN32_LEAN_AND_MEAN
|
||
|
|
#include <windows.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "libpikacolor/pikacolor.h"
|
||
|
|
|
||
|
|
#include "pikawidgetstypes.h"
|
||
|
|
|
||
|
|
#include "pikacairo-utils.h"
|
||
|
|
#include "pikahelpui.h"
|
||
|
|
#include "pikaicons.h"
|
||
|
|
#include "pikapickbutton.h"
|
||
|
|
#include "pikapickbutton-default.h"
|
||
|
|
#include "pikapickbutton-private.h"
|
||
|
|
#include "pikawidgetsutils.h"
|
||
|
|
|
||
|
|
#include "libpika/libpika-intl.h"
|
||
|
|
|
||
|
|
|
||
|
|
static gboolean pika_pick_button_mouse_press (GtkWidget *invisible,
|
||
|
|
GdkEventButton *event,
|
||
|
|
PikaPickButton *button);
|
||
|
|
static gboolean pika_pick_button_key_press (GtkWidget *invisible,
|
||
|
|
GdkEventKey *event,
|
||
|
|
PikaPickButton *button);
|
||
|
|
static gboolean pika_pick_button_mouse_motion (GtkWidget *invisible,
|
||
|
|
GdkEventMotion *event,
|
||
|
|
PikaPickButton *button);
|
||
|
|
static gboolean pika_pick_button_mouse_release (GtkWidget *invisible,
|
||
|
|
GdkEventButton *event,
|
||
|
|
PikaPickButton *button);
|
||
|
|
static void pika_pick_button_shutdown (PikaPickButton *button);
|
||
|
|
static void pika_pick_button_pick (PikaPickButton *button,
|
||
|
|
GdkEvent *event);
|
||
|
|
|
||
|
|
|
||
|
|
static GdkCursor *
|
||
|
|
make_cursor (GdkDisplay *display)
|
||
|
|
{
|
||
|
|
GdkPixbuf *pixbuf;
|
||
|
|
GError *error = NULL;
|
||
|
|
|
||
|
|
pixbuf = gdk_pixbuf_new_from_resource ("/technology.heckin/color-picker-cursors/cursor-color-picker.png",
|
||
|
|
&error);
|
||
|
|
|
||
|
|
if (pixbuf)
|
||
|
|
{
|
||
|
|
GdkCursor *cursor = gdk_cursor_new_from_pixbuf (display, pixbuf, 1, 30);
|
||
|
|
|
||
|
|
g_object_unref (pixbuf);
|
||
|
|
|
||
|
|
return cursor;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
g_critical ("Failed to create cursor image: %s", error->message);
|
||
|
|
g_clear_error (&error);
|
||
|
|
}
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_pick_button_mouse_press (GtkWidget *invisible,
|
||
|
|
GdkEventButton *event,
|
||
|
|
PikaPickButton *button)
|
||
|
|
{
|
||
|
|
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
|
||
|
|
{
|
||
|
|
g_signal_connect (invisible, "motion-notify-event",
|
||
|
|
G_CALLBACK (pika_pick_button_mouse_motion),
|
||
|
|
button);
|
||
|
|
g_signal_connect (invisible, "button-release-event",
|
||
|
|
G_CALLBACK (pika_pick_button_mouse_release),
|
||
|
|
button);
|
||
|
|
|
||
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
||
|
|
pika_pick_button_mouse_press,
|
||
|
|
button);
|
||
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
||
|
|
pika_pick_button_key_press,
|
||
|
|
button);
|
||
|
|
|
||
|
|
pika_pick_button_pick (button, (GdkEvent *) event);
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_pick_button_key_press (GtkWidget *invisible,
|
||
|
|
GdkEventKey *event,
|
||
|
|
PikaPickButton *button)
|
||
|
|
{
|
||
|
|
if (event->keyval == GDK_KEY_Escape)
|
||
|
|
{
|
||
|
|
pika_pick_button_shutdown (button);
|
||
|
|
|
||
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
||
|
|
pika_pick_button_mouse_press,
|
||
|
|
button);
|
||
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
||
|
|
pika_pick_button_key_press,
|
||
|
|
button);
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_pick_button_mouse_motion (GtkWidget *invisible,
|
||
|
|
GdkEventMotion *event,
|
||
|
|
PikaPickButton *button)
|
||
|
|
{
|
||
|
|
pika_pick_button_pick (button, (GdkEvent *) event);
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_pick_button_mouse_release (GtkWidget *invisible,
|
||
|
|
GdkEventButton *event,
|
||
|
|
PikaPickButton *button)
|
||
|
|
{
|
||
|
|
if (event->button != 1)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
pika_pick_button_pick (button, (GdkEvent *) event);
|
||
|
|
|
||
|
|
pika_pick_button_shutdown (button);
|
||
|
|
|
||
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
||
|
|
pika_pick_button_mouse_motion,
|
||
|
|
button);
|
||
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
||
|
|
pika_pick_button_mouse_release,
|
||
|
|
button);
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_pick_button_shutdown (PikaPickButton *button)
|
||
|
|
{
|
||
|
|
GdkDisplay *display = gtk_widget_get_display (button->priv->grab_widget);
|
||
|
|
|
||
|
|
gtk_grab_remove (button->priv->grab_widget);
|
||
|
|
|
||
|
|
gdk_seat_ungrab (gdk_display_get_default_seat (display));
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_pick_button_pick (PikaPickButton *button,
|
||
|
|
GdkEvent *event)
|
||
|
|
{
|
||
|
|
GdkScreen *screen = gdk_event_get_screen (event);
|
||
|
|
PikaColorProfile *monitor_profile;
|
||
|
|
GdkMonitor *monitor;
|
||
|
|
PikaRGB rgb;
|
||
|
|
gint x_root;
|
||
|
|
gint y_root;
|
||
|
|
gdouble x_win;
|
||
|
|
gdouble y_win;
|
||
|
|
|
||
|
|
gdk_window_get_origin (gdk_event_get_window (event), &x_root, &y_root);
|
||
|
|
gdk_event_get_coords (event, &x_win, &y_win);
|
||
|
|
x_root += x_win;
|
||
|
|
y_root += y_win;
|
||
|
|
|
||
|
|
#ifdef G_OS_WIN32
|
||
|
|
|
||
|
|
{
|
||
|
|
HDC hdc;
|
||
|
|
RECT rect;
|
||
|
|
COLORREF win32_color;
|
||
|
|
|
||
|
|
/* For MS Windows, use native GDI functions to get the pixel, as
|
||
|
|
* cairo does not handle the case where you have multiple monitors
|
||
|
|
* with a monitor on the left or above the primary monitor. That
|
||
|
|
* scenario create a cairo primary surface with negative extent,
|
||
|
|
* which is not handled properly (bug 740634).
|
||
|
|
*/
|
||
|
|
|
||
|
|
hdc = GetDC (HWND_DESKTOP);
|
||
|
|
GetClipBox (hdc, &rect);
|
||
|
|
win32_color = GetPixel (hdc, x_root + rect.left, y_root + rect.top);
|
||
|
|
ReleaseDC (HWND_DESKTOP, hdc);
|
||
|
|
|
||
|
|
pika_rgba_set_uchar (&rgb,
|
||
|
|
GetRValue (win32_color),
|
||
|
|
GetGValue (win32_color),
|
||
|
|
GetBValue (win32_color),
|
||
|
|
255);
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
{
|
||
|
|
GdkWindow *window;
|
||
|
|
gint x_window;
|
||
|
|
gint y_window;
|
||
|
|
cairo_surface_t *image;
|
||
|
|
cairo_t *cr;
|
||
|
|
guchar *data;
|
||
|
|
guchar color[3];
|
||
|
|
|
||
|
|
/* we try to pick from the local window under the cursor, and fall
|
||
|
|
* back to picking from the root window if this fails (i.e., if
|
||
|
|
* the cursor is not under a local window). on wayland, picking
|
||
|
|
* from the root window is not supported, so this at least allows
|
||
|
|
* us to pick from local windows. see bug #780375.
|
||
|
|
*/
|
||
|
|
window = gdk_device_get_window_at_position (gdk_event_get_device (event),
|
||
|
|
&x_window, &y_window);
|
||
|
|
if (! window)
|
||
|
|
{
|
||
|
|
window = gdk_screen_get_root_window (screen);
|
||
|
|
x_window = x_root;
|
||
|
|
y_window = y_root;
|
||
|
|
}
|
||
|
|
|
||
|
|
image = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 1, 1);
|
||
|
|
|
||
|
|
cr = cairo_create (image);
|
||
|
|
|
||
|
|
gdk_cairo_set_source_window (cr, window, -x_window, -y_window);
|
||
|
|
cairo_paint (cr);
|
||
|
|
|
||
|
|
cairo_destroy (cr);
|
||
|
|
|
||
|
|
data = cairo_image_surface_get_data (image);
|
||
|
|
PIKA_CAIRO_RGB24_GET_PIXEL (data, color[0], color[1], color[2]);
|
||
|
|
|
||
|
|
cairo_surface_destroy (image);
|
||
|
|
|
||
|
|
pika_rgba_set_uchar (&rgb, color[0], color[1], color[2], 255);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
monitor = gdk_display_get_monitor_at_point (gdk_screen_get_display (screen),
|
||
|
|
x_root, y_root);
|
||
|
|
monitor_profile = pika_monitor_get_color_profile (monitor);
|
||
|
|
|
||
|
|
if (monitor_profile)
|
||
|
|
{
|
||
|
|
PikaColorProfile *srgb_profile;
|
||
|
|
PikaColorTransform *transform;
|
||
|
|
const Babl *format;
|
||
|
|
PikaColorTransformFlags flags = 0;
|
||
|
|
|
||
|
|
format = babl_format ("R'G'B'A double");
|
||
|
|
|
||
|
|
flags |= PIKA_COLOR_TRANSFORM_FLAGS_NOOPTIMIZE;
|
||
|
|
flags |= PIKA_COLOR_TRANSFORM_FLAGS_BLACK_POINT_COMPENSATION;
|
||
|
|
|
||
|
|
srgb_profile = pika_color_profile_new_rgb_srgb ();
|
||
|
|
transform = pika_color_transform_new (monitor_profile, format,
|
||
|
|
srgb_profile, format,
|
||
|
|
PIKA_COLOR_RENDERING_INTENT_PERCEPTUAL,
|
||
|
|
flags);
|
||
|
|
g_object_unref (srgb_profile);
|
||
|
|
|
||
|
|
if (transform)
|
||
|
|
{
|
||
|
|
pika_color_transform_process_pixels (transform,
|
||
|
|
format, &rgb,
|
||
|
|
format, &rgb,
|
||
|
|
1);
|
||
|
|
pika_rgb_clamp (&rgb);
|
||
|
|
|
||
|
|
g_object_unref (transform);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
g_signal_emit_by_name (button, "color-picked", &rgb);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* entry point to this file, called from pikapickbutton.c */
|
||
|
|
void
|
||
|
|
_pika_pick_button_default_pick (PikaPickButton *button)
|
||
|
|
{
|
||
|
|
GdkDisplay *display;
|
||
|
|
GtkWidget *widget;
|
||
|
|
|
||
|
|
if (! button->priv->cursor)
|
||
|
|
button->priv->cursor =
|
||
|
|
make_cursor (gtk_widget_get_display (GTK_WIDGET (button)));
|
||
|
|
|
||
|
|
if (! button->priv->grab_widget)
|
||
|
|
{
|
||
|
|
button->priv->grab_widget = gtk_invisible_new ();
|
||
|
|
|
||
|
|
gtk_widget_add_events (button->priv->grab_widget,
|
||
|
|
GDK_BUTTON_PRESS_MASK |
|
||
|
|
GDK_BUTTON_RELEASE_MASK |
|
||
|
|
GDK_BUTTON1_MOTION_MASK);
|
||
|
|
|
||
|
|
gtk_widget_show (button->priv->grab_widget);
|
||
|
|
}
|
||
|
|
|
||
|
|
widget = button->priv->grab_widget;
|
||
|
|
|
||
|
|
display = gtk_widget_get_display (widget);
|
||
|
|
|
||
|
|
if (gdk_seat_grab (gdk_display_get_default_seat (display),
|
||
|
|
gtk_widget_get_window (widget),
|
||
|
|
GDK_SEAT_CAPABILITY_ALL,
|
||
|
|
FALSE,
|
||
|
|
button->priv->cursor,
|
||
|
|
NULL,
|
||
|
|
NULL, NULL) != GDK_GRAB_SUCCESS)
|
||
|
|
{
|
||
|
|
g_warning ("Failed to grab seat to do eyedropper");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
gtk_grab_add (widget);
|
||
|
|
|
||
|
|
g_signal_connect (widget, "button-press-event",
|
||
|
|
G_CALLBACK (pika_pick_button_mouse_press),
|
||
|
|
button);
|
||
|
|
g_signal_connect (widget, "key-press-event",
|
||
|
|
G_CALLBACK (pika_pick_button_key_press),
|
||
|
|
button);
|
||
|
|
}
|
