/**
* \brief get the ID from the screen.
*/
static void depthdropper_depth_sample_pt(
bContext *C, DepthDropper *ddr, int mx, int my, float *r_depth)
{
/* we could use some clever */
bScreen *screen = CTX_wm_screen(C);
ScrArea *sa = BKE_screen_find_area_xy(screen, SPACE_TYPE_ANY, mx, my);
Scene *scene = CTX_data_scene(C);
ScrArea *area_prev = CTX_wm_area(C);
ARegion *ar_prev = CTX_wm_region(C);
ddr->name[0] = '\0';
if (sa) {
if (sa->spacetype == SPACE_VIEW3D) {
ARegion *ar = BKE_area_find_region_xy(sa, RGN_TYPE_WINDOW, mx, my);
if (ar) {
struct Depsgraph *depsgraph = CTX_data_depsgraph(C);
View3D *v3d = sa->spacedata.first;
RegionView3D *rv3d = ar->regiondata;
/* weak, we could pass in some reference point */
const float *view_co = v3d->camera ? v3d->camera->obmat[3] : rv3d->viewinv[3];
const int mval[2] = {mx - ar->winrct.xmin, my - ar->winrct.ymin};
float co[3];
CTX_wm_area_set(C, sa);
CTX_wm_region_set(C, ar);
/* grr, always draw else we leave stale text */
ED_region_tag_redraw(ar);
view3d_operator_needs_opengl(C);
if (ED_view3d_autodist(depsgraph, ar, v3d, mval, co, true, NULL)) {
const float mval_center_fl[2] = {(float)ar->winx / 2, (float)ar->winy / 2};
float co_align[3];
/* quick way to get view-center aligned point */
ED_view3d_win_to_3d(v3d, ar, co, mval_center_fl, co_align);
*r_depth = len_v3v3(view_co, co_align);
bUnit_AsString2(ddr->name,
sizeof(ddr->name),
(double)*r_depth,
4,
B_UNIT_LENGTH,
&scene->unit,
false);
}
else {
BLI_strncpy(ddr->name, "Nothing under cursor", sizeof(ddr->name));
}
}
}
}
CTX_wm_area_set(C, area_prev);
CTX_wm_region_set(C, ar_prev);
}
/**
* \brief get the ID from the screen.
*
*/
static void datadropper_id_sample_pt(bContext *C, DataDropper *ddr, int mx, int my, ID **r_id)
{
/* we could use some clever */
wmWindow *win = CTX_wm_window(C);
ScrArea *sa = BKE_screen_find_area_xy(win->screen, -1, mx, my);
ScrArea *area_prev = CTX_wm_area(C);
ARegion *ar_prev = CTX_wm_region(C);
ddr->name[0] = '\0';
if (sa) {
if (sa->spacetype == SPACE_VIEW3D) {
ARegion *ar = BKE_area_find_region_xy(sa, RGN_TYPE_WINDOW, mx, my);
if (ar) {
const int mval[2] = {
mx - ar->winrct.xmin,
my - ar->winrct.ymin};
Base *base;
CTX_wm_area_set(C, sa);
CTX_wm_region_set(C, ar);
/* grr, always draw else we leave stale text */
ED_region_tag_redraw(ar);
base = ED_view3d_give_base_under_cursor(C, mval);
if (base) {
Object *ob = base->object;
ID *id = NULL;
if (ddr->idcode == ID_OB) {
id = (ID *)ob;
}
else if (ob->data) {
if (GS(((ID *)ob->data)->name) == ddr->idcode) {
id = (ID *)ob->data;
}
else {
BLI_snprintf(ddr->name, sizeof(ddr->name), "Incompatible, expected a %s",
ddr->idcode_name);
}
}
if (id) {
BLI_snprintf(ddr->name, sizeof(ddr->name), "%s: %s",
ddr->idcode_name, id->name + 2);
*r_id = id;
}
}
}
}
}
CTX_wm_area_set(C, area_prev);
CTX_wm_region_set(C, ar_prev);
}
/**
* \brief get the color from the screen.
*
* Special check for image or nodes where we MAY have HDR pixels which don't display.
*/
static void eyedropper_color_sample_fl(bContext *C, Eyedropper *UNUSED(eye), int mx, int my, float r_col[3])
{
/* we could use some clever */
wmWindow *win = CTX_wm_window(C);
ScrArea *sa = BKE_screen_find_area_xy(win->screen, SPACE_TYPE_ANY, mx, my);
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(CTX_data_scene(C), 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(CTX_data_scene(C), 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(CTX_data_scene(C), 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);
}
/**
* Utility to retrieve a button representing a RNA property that is currently under the cursor.
*
* This is to be used by any eyedroppers which fetch properties (e.g. UI_OT_eyedropper_driver).
* Especially during modal operations (e.g. as with the eyedroppers), context cannot be relied
* upon to provide this information, as it is not updated until the operator finishes.
*
* \return A button under the mouse which relates to some RNA Property, or NULL
*/
static uiBut *eyedropper_get_property_button_under_mouse(bContext *C, const wmEvent *event)
{
wmWindow *win = CTX_wm_window(C);
ScrArea *sa = BKE_screen_find_area_xy(win->screen, SPACE_TYPE_ANY, event->x, event->y);
ARegion *ar = BKE_area_find_region_xy(sa, RGN_TYPE_ANY, event->x, event->y);
uiBut *but = ui_but_find_mouse_over(ar, event);
if (ELEM(NULL, but, but->rnapoin.data, but->rnaprop)) {
return NULL;
}
else {
return but;
}
}
