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Add gesture to ViewPanner and simplify a bit its API

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This commit is contained in:
Gilles Roudière 2023-01-19 17:50:51 +01:00
parent 9937915ad7
commit a3b431b09d
16 changed files with 139 additions and 201 deletions
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56
editor/plugins/canvas_item_editor_plugin.cpp
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@ -1259,57 +1259,25 @@ bool CanvasItemEditor::_gui_input_zoom_or_pan(const Ref<InputEvent> &p_event, bo
}
}
Ref<InputEventMagnifyGesture> magnify_gesture = p_event;
if (magnify_gesture.is_valid() && !p_already_accepted) {
// Zoom gesture
_zoom_on_position(zoom * magnify_gesture->get_factor(), magnify_gesture->get_position());
return true;
}
Ref<InputEventPanGesture> pan_gesture = p_event;
if (pan_gesture.is_valid() && !p_already_accepted) {
// If ctrl key pressed, then zoom instead of pan.
if (pan_gesture->is_ctrl_pressed()) {
const real_t factor = pan_gesture->get_delta().y;
zoom_widget->set_zoom_by_increments(1);
if (factor != 1.f) {
zoom_widget->set_zoom(zoom * ((zoom_widget->get_zoom() / zoom - 1.f) * factor + 1.f));
}
_zoom_on_position(zoom_widget->get_zoom(), pan_gesture->get_position());
return true;
}
// Pan gesture
const Vector2 delta = (pan_speed / zoom) * pan_gesture->get_delta();
view_offset.x += delta.x;
view_offset.y += delta.y;
update_viewport();
return true;
}
return false;
}
void CanvasItemEditor::_scroll_callback(Vector2 p_scroll_vec, bool p_alt) {
_pan_callback(-p_scroll_vec * pan_speed);
}
void CanvasItemEditor::_pan_callback(Vector2 p_scroll_vec) {
void CanvasItemEditor::_pan_callback(Vector2 p_scroll_vec, Ref<InputEvent> p_event) {
view_offset.x -= p_scroll_vec.x / zoom;
view_offset.y -= p_scroll_vec.y / zoom;
update_viewport();
}
void CanvasItemEditor::_zoom_callback(Vector2 p_scroll_vec, Vector2 p_origin, bool p_alt) {
int scroll_sign = (int)SIGN(p_scroll_vec.y);
// Inverted so that scrolling up (-1) zooms in, scrolling down (+1) zooms out.
zoom_widget->set_zoom_by_increments(-scroll_sign, p_alt);
if (!Math::is_equal_approx(ABS(p_scroll_vec.y), (real_t)1.0)) {
// Handle high-precision (analog) scrolling.
zoom_widget->set_zoom(zoom * ((zoom_widget->get_zoom() / zoom - 1.f) * ABS(p_scroll_vec.y) + 1.f));
void CanvasItemEditor::_zoom_callback(float p_zoom_factor, Vector2 p_origin, Ref<InputEvent> p_event) {
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid()) {
// Special behvior for scroll events, as the zoom_by_increment method can smartly end up on powers of two.
int increment = p_zoom_factor > 1.0 ? 1 : -1;
zoom_widget->set_zoom_by_increments(increment, mb->is_alt_pressed());
} else {
zoom_widget->set_zoom(zoom_widget->get_zoom() * p_zoom_factor);
}
_zoom_on_position(zoom_widget->get_zoom(), p_origin);
}
@ -3868,7 +3836,7 @@ void CanvasItemEditor::_update_editor_settings() {
context_menu_panel->add_theme_style_override("panel", get_theme_stylebox(SNAME("ContextualToolbar"), SNAME("EditorStyles")));
panner->setup((ViewPanner::ControlScheme)EDITOR_GET("editors/panning/2d_editor_panning_scheme").operator int(), ED_GET_SHORTCUT("canvas_item_editor/pan_view"), bool(EDITOR_GET("editors/panning/simple_panning")));
pan_speed = int(EDITOR_GET("editors/panning/2d_editor_pan_speed"));
panner->set_scroll_speed(EDITOR_GET("editors/panning/2d_editor_pan_speed"));
warped_panning = bool(EDITOR_GET("editors/panning/warped_mouse_panning"));
}
@ -5059,7 +5027,7 @@ CanvasItemEditor::CanvasItemEditor() {
zoom_widget->connect("zoom_changed", callable_mp(this, &CanvasItemEditor::_update_zoom));
panner.instantiate();
panner->set_callbacks(callable_mp(this, &CanvasItemEditor::_scroll_callback), callable_mp(this, &CanvasItemEditor::_pan_callback), callable_mp(this, &CanvasItemEditor::_zoom_callback));
panner->set_callbacks(callable_mp(this, &CanvasItemEditor::_pan_callback), callable_mp(this, &CanvasItemEditor::_zoom_callback));
viewport = memnew(CanvasItemEditorViewport(this));
viewport_scrollable->add_child(viewport);