1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
|
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2009 Blender Foundation.
* All rights reserved.
*/
/** \file blender/editors/interface/interface_eyedropper_color.c
* \ingroup edinterface
*
* Eyedropper (RGB Color)
*
* Defines:
* - #UI_OT_eyedropper_color
*/
#include "MEM_guardedalloc.h"
#include "DNA_space_types.h"
#include "DNA_screen_types.h"
#include "BLI_math_vector.h"
#include "BLI_string.h"
#include "BKE_context.h"
#include "BKE_main.h"
#include "BKE_screen.h"
#include "RNA_access.h"
#include "BIF_gl.h"
#include "UI_interface.h"
#include "IMB_colormanagement.h"
#include "WM_api.h"
#include "WM_types.h"
#include "interface_intern.h"
#include "ED_image.h"
#include "ED_node.h"
#include "ED_clip.h"
#include "interface_eyedropper_intern.h"
typedef struct Eyedropper {
struct ColorManagedDisplay *display;
PointerRNA ptr;
PropertyRNA *prop;
int index;
float init_col[3]; /* for resetting on cancel */
bool accum_start; /* has mouse been pressed */
float accum_col[3];
int accum_tot;
bool accumulate; /* Color picking for cryptomatte, without accumulation. */
} Eyedropper;
static bool eyedropper_init(bContext *C, wmOperator *op)
{
Scene *scene = CTX_data_scene(C);
Eyedropper *eye;
op->customdata = eye = MEM_callocN(sizeof(Eyedropper), "Eyedropper");
eye->accumulate = !STREQ(op->type->idname, "UI_OT_eyedropper_color_crypto");
UI_context_active_but_prop_get(C, &eye->ptr, &eye->prop, &eye->index);
if ((eye->ptr.data == NULL) ||
(eye->prop == NULL) ||
(RNA_property_editable(&eye->ptr, eye->prop) == false) ||
(RNA_property_array_length(&eye->ptr, eye->prop) < 3) ||
(RNA_property_type(eye->prop) != PROP_FLOAT))
{
return false;
}
if (RNA_property_subtype(eye->prop) != PROP_COLOR) {
const char *display_device;
float col[4];
display_device = scene->display_settings.display_device;
eye->display = IMB_colormanagement_display_get_named(display_device);
/* store initial color */
RNA_property_float_get_array(&eye->ptr, eye->prop, col);
if (eye->display) {
IMB_colormanagement_display_to_scene_linear_v3(col, eye->display);
}
copy_v3_v3(eye->init_col, col);
}
return true;
}
static void eyedropper_exit(bContext *C, wmOperator *op)
{
WM_cursor_modal_restore(CTX_wm_window(C));
if (op->customdata) {
MEM_freeN(op->customdata);
op->customdata = NULL;
}
}
/* *** eyedropper_color_ helper functions *** */
/**
* \brief get the color from the screen.
*
* Special check for image or nodes where we MAY have HDR pixels which don't display.
*
* \note Exposed by 'interface_eyedropper_intern.h' for use with color band picking.
*/
void eyedropper_color_sample_fl(bContext *C, int mx, int my, float r_col[3])
{
/* we could use some clever */
Main *bmain = CTX_data_main(C);
wmWindow *win = CTX_wm_window(C);
ScrArea *sa = BKE_screen_find_area_xy(win->screen, SPACE_TYPE_ANY, mx, my);
const char *display_device = CTX_data_scene(C)->display_settings.display_device;
struct ColorManagedDisplay *display = IMB_colormanagement_display_get_named(display_device);
if (sa) {
if (sa->spacetype == SPACE_IMAGE) {
ARegion *ar = BKE_area_find_region_xy(sa, RGN_TYPE_WINDOW, mx, my);
if (ar) {
SpaceImage *sima = sa->spacedata.first;
int mval[2] = {mx - ar->winrct.xmin,
my - ar->winrct.ymin};
if (ED_space_image_color_sample(sima, ar, mval, r_col)) {
return;
}
}
}
else if (sa->spacetype == SPACE_NODE) {
ARegion *ar = BKE_area_find_region_xy(sa, RGN_TYPE_WINDOW, mx, my);
if (ar) {
SpaceNode *snode = sa->spacedata.first;
int mval[2] = {mx - ar->winrct.xmin,
my - ar->winrct.ymin};
if (ED_space_node_color_sample(bmain, snode, ar, mval, r_col)) {
return;
}
}
}
else if (sa->spacetype == SPACE_CLIP) {
ARegion *ar = BKE_area_find_region_xy(sa, RGN_TYPE_WINDOW, mx, my);
if (ar) {
SpaceClip *sc = sa->spacedata.first;
int mval[2] = {mx - ar->winrct.xmin,
my - ar->winrct.ymin};
if (ED_space_clip_color_sample(sc, ar, mval, r_col)) {
return;
}
}
}
}
/* fallback to simple opengl picker */
glReadBuffer(GL_FRONT);
glReadPixels(mx, my, 1, 1, GL_RGB, GL_FLOAT, r_col);
glReadBuffer(GL_BACK);
IMB_colormanagement_display_to_scene_linear_v3(r_col, display);
}
/* sets the sample color RGB, maintaining A */
static void eyedropper_color_set(bContext *C, Eyedropper *eye, const float col[3])
{
float col_conv[4];
/* to maintain alpha */
RNA_property_float_get_array(&eye->ptr, eye->prop, col_conv);
/* convert from linear rgb space to display space */
if (eye->display) {
copy_v3_v3(col_conv, col);
IMB_colormanagement_scene_linear_to_display_v3(col_conv, eye->display);
}
else {
copy_v3_v3(col_conv, col);
}
RNA_property_float_set_array(&eye->ptr, eye->prop, col_conv);
RNA_property_update(C, &eye->ptr, eye->prop);
}
static void eyedropper_color_sample(bContext *C, Eyedropper *eye, int mx, int my)
{
/* Accumulate color. */
float col[3];
eyedropper_color_sample_fl(C, mx, my, col);
if (eye->accumulate) {
add_v3_v3(eye->accum_col, col);
eye->accum_tot++;
}
else {
copy_v3_v3(eye->accum_col, col);
eye->accum_tot = 1;
}
/* Apply to property. */
float accum_col[3];
if (eye->accum_tot > 1) {
mul_v3_v3fl(accum_col, eye->accum_col, 1.0f / (float)eye->accum_tot);
}
else {
copy_v3_v3(accum_col, eye->accum_col);
}
eyedropper_color_set(C, eye, accum_col);
}
static void eyedropper_cancel(bContext *C, wmOperator *op)
{
Eyedropper *eye = op->customdata;
eyedropper_color_set(C, eye, eye->init_col);
eyedropper_exit(C, op);
}
/* main modal status check */
static int eyedropper_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
Eyedropper *eye = (Eyedropper *)op->customdata;
/* handle modal keymap */
if (event->type == EVT_MODAL_MAP) {
switch (event->val) {
case EYE_MODAL_CANCEL:
eyedropper_cancel(C, op);
return OPERATOR_CANCELLED;
case EYE_MODAL_SAMPLE_CONFIRM:
if (eye->accum_tot == 0) {
eyedropper_color_sample(C, eye, event->x, event->y);
}
eyedropper_exit(C, op);
return OPERATOR_FINISHED;
case EYE_MODAL_SAMPLE_BEGIN:
/* enable accum and make first sample */
eye->accum_start = true;
eyedropper_color_sample(C, eye, event->x, event->y);
break;
case EYE_MODAL_SAMPLE_RESET:
eye->accum_tot = 0;
zero_v3(eye->accum_col);
eyedropper_color_sample(C, eye, event->x, event->y);
break;
}
}
else if (ELEM(event->type, MOUSEMOVE, INBETWEEN_MOUSEMOVE)) {
if (eye->accum_start) {
/* button is pressed so keep sampling */
eyedropper_color_sample(C, eye, event->x, event->y);
}
}
return OPERATOR_RUNNING_MODAL;
}
/* Modal Operator init */
static int eyedropper_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
/* init */
if (eyedropper_init(C, op)) {
WM_cursor_modal_set(CTX_wm_window(C), BC_EYEDROPPER_CURSOR);
/* add temp handler */
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
else {
eyedropper_exit(C, op);
return OPERATOR_PASS_THROUGH;
}
}
/* Repeat operator */
static int eyedropper_exec(bContext *C, wmOperator *op)
{
/* init */
if (eyedropper_init(C, op)) {
/* do something */
/* cleanup */
eyedropper_exit(C, op);
return OPERATOR_FINISHED;
}
else {
return OPERATOR_PASS_THROUGH;
}
}
static bool eyedropper_poll(bContext *C)
{
/* Actual test for active button happens later, since we don't
* know which one is active until mouse over. */
return (CTX_wm_window(C) != NULL);
}
void UI_OT_eyedropper_color(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Eyedropper";
ot->idname = "UI_OT_eyedropper_color";
ot->description = "Sample a color from the Blender Window to store in a property";
/* api callbacks */
ot->invoke = eyedropper_invoke;
ot->modal = eyedropper_modal;
ot->cancel = eyedropper_cancel;
ot->exec = eyedropper_exec;
ot->poll = eyedropper_poll;
/* flags */
ot->flag = OPTYPE_BLOCKING | OPTYPE_INTERNAL;
}
void UI_OT_eyedropper_color_crypto(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Cryptomatte Eyedropper";
ot->idname = "UI_OT_eyedropper_color_crypto";
ot->description = "Pick a color from Cryptomatte node Pick output image";
/* api callbacks */
ot->invoke = eyedropper_invoke;
ot->modal = eyedropper_modal;
ot->cancel = eyedropper_cancel;
ot->exec = eyedropper_exec;
ot->poll = eyedropper_poll;
/* flags */
ot->flag = OPTYPE_BLOCKING | OPTYPE_INTERNAL;
}
|