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Calculate the mouse focus inverse transform only when needed #49158
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I have resolved the merge-conflict of this PR and it seems to work in current master: diff --git a/scene/main/viewport.cpp b/scene/main/viewport.cpp
index 43a2c9473e..9374cdebe2 100644
--- a/scene/main/viewport.cpp
+++ b/scene/main/viewport.cpp
@@ -1395,7 +1395,7 @@ Control *Viewport::gui_find_control(const Point2 &p_global) {
xform = sw->get_canvas_transform();
}
- Control *ret = _gui_find_control_at_pos(sw, p_global, xform, gui.focus_inv_xform);
+ Control *ret = _gui_find_control_at_pos(sw, p_global, xform);
if (ret) {
return ret;
}
@@ -1404,7 +1404,7 @@ Control *Viewport::gui_find_control(const Point2 &p_global) {
return nullptr;
}
-Control *Viewport::_gui_find_control_at_pos(CanvasItem *p_node, const Point2 &p_global, const Transform2D &p_xform, Transform2D &r_inv_xform) {
+Control *Viewport::_gui_find_control_at_pos(CanvasItem *p_node, const Point2 &p_global, const Transform2D &p_xform) {
if (!p_node->is_visible()) {
return nullptr; // Canvas item hidden, discard.
}
@@ -1424,7 +1424,7 @@ Control *Viewport::_gui_find_control_at_pos(CanvasItem *p_node, const Point2 &p_
continue;
}
- Control *ret = _gui_find_control_at_pos(ci, p_global, matrix, r_inv_xform);
+ Control *ret = _gui_find_control_at_pos(ci, p_global, matrix);
if (ret) {
return ret;
}
@@ -1442,7 +1442,6 @@ Control *Viewport::_gui_find_control_at_pos(CanvasItem *p_node, const Point2 &p_
Control *drag_preview = _gui_get_drag_preview();
if (!drag_preview || (c != drag_preview && !drag_preview->is_ancestor_of(c))) {
- r_inv_xform = matrix;
return c;
}
@@ -1489,12 +1488,11 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
Point2 mpos = mb->get_position();
if (mb->is_pressed()) {
- Size2 pos = mpos;
if (gui.mouse_focus_mask != MouseButton::NONE) {
// Do not steal mouse focus and stuff while a focus mask exists.
gui.mouse_focus_mask |= mouse_button_to_mask(mb->get_button_index());
} else {
- gui.mouse_focus = gui_find_control(pos);
+ gui.mouse_focus = gui_find_control(mpos);
gui.last_mouse_focus = gui.mouse_focus;
if (!gui.mouse_focus) {
@@ -1512,10 +1510,7 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
mb = mb->xformed_by(Transform2D()); // Make a copy of the event.
- mb->set_global_position(pos);
-
- pos = gui.focus_inv_xform.xform(pos);
-
+ Point2 pos = gui.mouse_focus->get_global_transform_with_canvas().affine_inverse().xform(mpos);
mb->set_position(pos);
#ifdef DEBUG_ENABLED
@@ -1579,11 +1574,8 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
return;
}
- Size2 pos = mpos;
-
mb = mb->xformed_by(Transform2D()); // Make a copy.
- mb->set_global_position(pos);
- pos = gui.focus_inv_xform.xform(pos);
+ Point2 pos = gui.mouse_focus->get_global_transform_with_canvas().affine_inverse().xform(mpos);
mb->set_position(pos);
Control *mouse_focus = gui.mouse_focus;
@@ -1874,18 +1866,14 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
Ref<InputEventScreenTouch> touch_event = p_event;
if (touch_event.is_valid()) {
- Size2 pos = touch_event->get_position();
+ Point2 pos = touch_event->get_position();
if (touch_event->is_pressed()) {
Control *over = gui_find_control(pos);
if (over) {
bool stopped = false;
if (over->can_process()) {
touch_event = touch_event->xformed_by(Transform2D()); // Make a copy.
- if (over == gui.mouse_focus) {
- pos = gui.focus_inv_xform.xform(pos);
- } else {
- pos = over->get_global_transform_with_canvas().affine_inverse().xform(pos);
- }
+ pos = over->get_global_transform_with_canvas().affine_inverse().xform(pos);
touch_event->set_position(pos);
stopped = _gui_call_input(over, touch_event);
}
@@ -1898,7 +1886,8 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
bool stopped = false;
if (gui.last_mouse_focus->can_process()) {
touch_event = touch_event->xformed_by(Transform2D()); // Make a copy.
- touch_event->set_position(gui.focus_inv_xform.xform(pos));
+ pos = gui.last_mouse_focus->get_global_transform_with_canvas().affine_inverse().xform(pos);
+ touch_event->set_position(pos);
stopped = _gui_call_input(gui.last_mouse_focus, touch_event);
}
@@ -1922,11 +1911,7 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
bool stopped = false;
if (over->can_process()) {
gesture_event = gesture_event->xformed_by(Transform2D()); // Make a copy.
- if (over == gui.mouse_focus) {
- pos = gui.focus_inv_xform.xform(pos);
- } else {
- pos = over->get_global_transform_with_canvas().affine_inverse().xform(pos);
- }
+ pos = over->get_global_transform_with_canvas().affine_inverse().xform(pos);
gesture_event->set_position(pos);
stopped = _gui_call_input(over, gesture_event);
}
@@ -2371,7 +2356,6 @@ void Viewport::_post_gui_grab_click_focus() {
}
gui.mouse_focus = focus_grabber;
- gui.focus_inv_xform = gui.mouse_focus->get_global_transform_with_canvas().affine_inverse();
click = gui.mouse_focus->get_global_transform_with_canvas().affine_inverse().xform(gui.last_mouse_pos);
for (int i = 0; i < 3; i++) {
diff --git a/scene/main/viewport.h b/scene/main/viewport.h
index dc69ec24d8..7cadfc7541 100644
--- a/scene/main/viewport.h
+++ b/scene/main/viewport.h
@@ -373,7 +373,6 @@ private:
ObjectID drag_preview_id;
Ref<SceneTreeTimer> tooltip_timer;
double tooltip_delay = 0.0;
- Transform2D focus_inv_xform;
bool roots_order_dirty = false;
List<Control *> roots;
int canvas_sort_index = 0; //for sorting items with canvas as root
@@ -402,7 +401,7 @@ private:
void _gui_call_notification(Control *p_control, int p_what);
void _gui_sort_roots();
- Control *_gui_find_control_at_pos(CanvasItem *p_node, const Point2 &p_global, const Transform2D &p_xform, Transform2D &r_inv_xform);
+ Control *_gui_find_control_at_pos(CanvasItem *p_node, const Point2 &p_global, const Transform2D &p_xform);
void _gui_input_event(Ref<InputEvent> p_event);
void _perform_drop(Control *p_control = nullptr, Point2 p_pos = Point2()); |
Sauermann
added a commit
to Sauermann/godot
that referenced
this pull request
Jan 9, 2023
Revival of godotengine#49158 Co-authored-by: Marcel Admiraal <madmiraal@users.noreply.github.com>
Superseded by #69598. |
Streq
pushed a commit
to Streq/godot
that referenced
this pull request
Feb 9, 2023
Revival of godotengine#49158 Co-authored-by: Marcel Admiraal <madmiraal@users.noreply.github.com>
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Currently,
gui.focus_inv_xform
is used to determine the location of an event within aControl
.Viewport::_gui_find_control()
has the side-effect of updatinggui.focus_inv_xform
. This would be fine if_gui_find_control()
was just used to assigngui.mouse_focus
, but it's not. The result is, when a mouse button release event happens, sometimesgui.focus_inv_xform
does not provide the location of the event inside theControl
where the mouse button press event happened.Instead of calculating the
mouse_focus
'sControl
's inverse transform every time_gui_find_control()
is called and storing the result for later use, this PR calculates the required inverse transform only when it is needed. This will not only prevent the wrong inverse transform sometimes being used, but should result in better performance too.Fixes #41585.