bool BLI_rcti_isect_segment(const rcti *rect, const int s1[2], const int s2[2])
{
/* first do outside-bounds check for both points of the segment */
if (s1[0] < rect->xmin && s2[0] < rect->xmin) return false;
if (s1[0] > rect->xmax && s2[0] > rect->xmax) return false;
if (s1[1] < rect->ymin && s2[1] < rect->ymin) return false;
if (s1[1] > rect->ymax && s2[1] > rect->ymax) return false;
/* if either points intersect then we definetly intersect */
if (BLI_rcti_isect_pt_v(rect, s1) || BLI_rcti_isect_pt_v(rect, s2)) {
return true;
}
else {
/* both points are outside but may insersect the rect */
int tvec1[2];
int tvec2[2];
/* diagonal: [/] */
tvec1[0] = rect->xmin; tvec1[1] = rect->ymin;
tvec2[0] = rect->xmin; tvec2[1] = rect->ymax;
if (isect_segments_i(s1, s2, tvec1, tvec2)) {
return true;
}
/* diagonal: [\] */
tvec1[0] = rect->xmin; tvec1[1] = rect->ymax;
tvec2[0] = rect->xmax; tvec2[1] = rect->ymin;
if (isect_segments_i(s1, s2, tvec1, tvec2)) {
return true;
}
/* no intersection */
return false;
}
}
bool ED_region_panel_category_gutter_isect_xy(const ARegion *ar, const int event_xy[2])
{
rcti ar_gutter;
if (ED_region_panel_category_gutter_calc_rect(ar, &ar_gutter)) {
return BLI_rcti_isect_pt_v(&ar_gutter, event_xy);
}
return false;
}
static ARegion *region_event_inside_for_screen(bContext *C, const int xy[2])
{
bScreen *sc = CTX_wm_screen(C);
if (sc) {
for (ARegion *ar = sc->regionbase.first; ar; ar = ar->next) {
if (BLI_rcti_isect_pt_v(&ar->winrct, xy)) {
return ar;
}
}
}
return NULL;
}
bool ED_region_contains_xy(const ARegion *ar, const int event_xy[2])
{
/* Only use the margin when inside the region. */
if (BLI_rcti_isect_pt_v(&ar->winrct, event_xy)) {
if (ar->overlap) {
const int overlap_margin = UI_REGION_OVERLAP_MARGIN;
/* Note the View2D.tot isn't reliable for headers with spacers otherwise
* we'd check #ED_region_overlap_isect_xy_with_margin for both bases. */
if (ar->v2d.keeptot == V2D_KEEPTOT_STRICT) {
/* Header. */
rcti rect;
BLI_rcti_init_pt_radius(&rect, event_xy, overlap_margin);
if (UI_region_but_find_rect_over(ar, &rect) == NULL) {
return false;
}
}
else {
/* Side-bar & any other kind of overlapping region. */
/* Check alignment to avoid region tabs being clipped out
* by only clipping a single axis for aligned regions. */
if (ELEM(ar->alignment, RGN_ALIGN_TOP, RGN_ALIGN_BOTTOM)) {
if (!ED_region_overlap_isect_x_with_margin(ar, event_xy[0], overlap_margin)) {
return false;
}
}
else if (ELEM(ar->alignment, RGN_ALIGN_LEFT, RGN_ALIGN_RIGHT)) {
if (ED_region_panel_category_gutter_isect_xy(ar, event_xy)) {
/* pass */
}
else if (!ED_region_overlap_isect_y_with_margin(ar, event_xy[1], overlap_margin)) {
return false;
}
}
else {
/* No panel categories for horizontal regions currently. */
if (!ED_region_overlap_isect_xy_with_margin(ar, event_xy, overlap_margin)) {
return false;
}
}
}
}
return true;
}
return false;
}
static int view3d_ruler_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
bool do_draw = false;
int exit_code = OPERATOR_RUNNING_MODAL;
RulerInfo *ruler_info = op->customdata;
ScrArea *sa = ruler_info->sa;
ARegion *ar = ruler_info->ar;
RegionView3D *rv3d = ar->regiondata;
/* its possible to change spaces while running the operator [#34894] */
if (UNLIKELY(ar != CTX_wm_region(C))) {
exit_code = OPERATOR_FINISHED;
goto exit;
}
switch (event->type) {
case LEFTMOUSE:
if (event->val == KM_RELEASE) {
if (ruler_info->state == RULER_STATE_DRAG) {
/* rubber-band angle removal */
RulerItem *ruler_item = ruler_item_active_get(ruler_info);
if (ruler_item && (ruler_item->co_index == 1) && (ruler_item->flag & RULERITEM_USE_ANGLE)) {
if (!BLI_rcti_isect_pt_v(&ar->winrct, &event->x)) {
ruler_item->flag &= ~RULERITEM_USE_ANGLE;
do_draw = true;
}
}
if (ruler_info->snap_flag & RULER_SNAP_OK) {
ruler_info->snap_flag &= ~RULER_SNAP_OK;
do_draw = true;
}
ruler_info->state = RULER_STATE_NORMAL;
}
}
else {
if (ruler_info->state == RULER_STATE_NORMAL) {
if (event->ctrl ||
/* weak - but user friendly */
BLI_listbase_is_empty(&ruler_info->items))
{
View3D *v3d = CTX_wm_view3d(C);
const bool use_depth = (v3d->drawtype >= OB_SOLID);
/* Create new line */
RulerItem *ruler_item_prev = ruler_item_active_get(ruler_info);
RulerItem *ruler_item;
/* check if we want to drag an existing point or add a new one */
ruler_info->state = RULER_STATE_DRAG;
ruler_item = ruler_item_add(ruler_info);
ruler_item_active_set(ruler_info, ruler_item);
if (use_depth) {
/* snap the first point added, not essential but handy */
ruler_item->co_index = 0;
view3d_ruler_item_mousemove(C, ruler_info, event->mval, false, true);
copy_v3_v3(ruler_info->drag_start_co, ruler_item->co[ruler_item->co_index]);
}
else {
/* initial depth either previous ruler, view offset */
if (ruler_item_prev) {
copy_v3_v3(ruler_info->drag_start_co, ruler_item_prev->co[ruler_item_prev->co_index]);
}
else {
negate_v3_v3(ruler_info->drag_start_co, rv3d->ofs);
}
copy_v3_v3(ruler_item->co[0], ruler_info->drag_start_co);
view3d_ruler_item_project(ruler_info, ruler_item->co[0], event->mval);
}
copy_v3_v3(ruler_item->co[2], ruler_item->co[0]);
ruler_item->co_index = 2;
do_draw = true;
}
else {
float mval_fl[2] = {UNPACK2(event->mval)};
RulerItem *ruler_item_pick;
int co_index;
/* select and drag */
if (view3d_ruler_pick(ruler_info, mval_fl, &ruler_item_pick, &co_index)) {
if (co_index == -1) {
if ((ruler_item_pick->flag & RULERITEM_USE_ANGLE) == 0) {
/* Add Center Point */
ruler_item_active_set(ruler_info, ruler_item_pick);
ruler_item_pick->flag |= RULERITEM_USE_ANGLE;
ruler_item_pick->co_index = 1;
ruler_info->state = RULER_STATE_DRAG;
/* find the factor */
{
float co_ss[2][2];
float fac;
ED_view3d_project_float_global(ar, ruler_item_pick->co[0], co_ss[0], V3D_PROJ_TEST_NOP);
ED_view3d_project_float_global(ar, ruler_item_pick->co[2], co_ss[1], V3D_PROJ_TEST_NOP);
fac = line_point_factor_v2(mval_fl, co_ss[0], co_ss[1]);
CLAMP(fac, 0.0f, 1.0f);
interp_v3_v3v3(ruler_item_pick->co[1],
ruler_item_pick->co[0],
ruler_item_pick->co[2], fac);
}
/* update the new location */
view3d_ruler_item_mousemove(C, ruler_info, event->mval,
event->shift != 0, event->ctrl != 0);
do_draw = true;
}
}
else {
ruler_item_active_set(ruler_info, ruler_item_pick);
ruler_item_pick->co_index = co_index;
ruler_info->state = RULER_STATE_DRAG;
/* store the initial depth */
copy_v3_v3(ruler_info->drag_start_co, ruler_item_pick->co[ruler_item_pick->co_index]);
do_draw = true;
}
}
else {
exit_code = OPERATOR_PASS_THROUGH;
}
}
}
}
break;
case CKEY:
{
if (event->ctrl) {
RulerItem *ruler_item = ruler_item_active_get(ruler_info);
if (ruler_item) {
const int prec = 8;
char numstr[256];
Scene *scene = CTX_data_scene(C);
UnitSettings *unit = &scene->unit;
ruler_item_as_string(ruler_item, unit, numstr, sizeof(numstr), prec);
WM_clipboard_text_set((void *) numstr, false);
}
}
break;
}
case RIGHTCTRLKEY:
case LEFTCTRLKEY:
{
WM_event_add_mousemove(C);
break;
}
case MOUSEMOVE:
{
if (ruler_info->state == RULER_STATE_DRAG) {
if (view3d_ruler_item_mousemove(C, ruler_info, event->mval,
event->shift != 0, event->ctrl != 0))
{
do_draw = true;
}
}
break;
}
case ESCKEY:
{
do_draw = true;
exit_code = OPERATOR_CANCELLED;
break;
}
case RETKEY:
{
view3d_ruler_to_gpencil(C, ruler_info);
do_draw = true;
exit_code = OPERATOR_FINISHED;
break;
}
case DELKEY:
{
if (event->val == KM_PRESS) {
if (ruler_info->state == RULER_STATE_NORMAL) {
RulerItem *ruler_item = ruler_item_active_get(ruler_info);
if (ruler_item) {
RulerItem *ruler_item_other = ruler_item->prev ? ruler_item->prev : ruler_item->next;
ruler_item_remove(ruler_info, ruler_item);
ruler_item_active_set(ruler_info, ruler_item_other);
do_draw = true;
}
}
}
break;
}
default:
exit_code = OPERATOR_PASS_THROUGH;
break;
}
if (do_draw) {
view3d_ruler_header_update(sa);
/* all 3d views draw rulers */
WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, NULL);
}
exit:
if (ELEM(exit_code, OPERATOR_FINISHED, OPERATOR_CANCELLED)) {
WM_cursor_modal_restore(ruler_info->win);
view3d_ruler_end(C, ruler_info);
view3d_ruler_free(ruler_info);
op->customdata = NULL;
ED_area_headerprint(sa, NULL);
}
return exit_code;
}