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Code Issues Activity Actions

VisualBuilder: Allow resizing widgets using their grabbers.

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This commit is contained in:
Andreas Kling 2019-04-11 02:35:30 +02:00
parent 3c8e53ef2b
commit d73f79a2d2
4 changed files with 94 additions and 2 deletions
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82
Applications/VisualBuilder/VBForm.cpp
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@ -52,8 +52,20 @@ VBWidget* VBForm::widget_at(const Point& position)
return nullptr;
}
void VBForm::grabber_mousedown_event(GMouseEvent& event, VBWidget& widget, Direction grabber)
{
m_transform_event_origin = event.position();
m_transform_widget_origin_rect = widget.rect();
m_resize_direction = grabber;
}
void VBForm::mousedown_event(GMouseEvent& event)
{
if (m_selected_widget && m_resize_direction == Direction::None) {
auto grabber = m_selected_widget->grabber_at(event.position());
if (grabber != Direction::None)
return grabber_mousedown_event(event, *m_selected_widget, grabber);
}
auto* widget = widget_at(event.position());
if (!widget) {
if (m_selected_widget) {
@ -73,10 +85,75 @@ void VBForm::mousedown_event(GMouseEvent& event)
void VBForm::mousemove_event(GMouseEvent& event)
{
if (event.buttons() & GMouseButton::Left && m_selected_widget) {
auto delta = event.position() - m_transform_event_origin;
auto new_rect = m_transform_widget_origin_rect.translated(delta);
if (m_resize_direction == Direction::None) {
auto delta = event.position() - m_transform_event_origin;
auto new_rect = m_transform_widget_origin_rect.translated(delta);
new_rect.set_x(new_rect.x() - (new_rect.x() % m_grid_size));
new_rect.set_y(new_rect.y() - (new_rect.y() % m_grid_size));
m_selected_widget->set_rect(new_rect);
update();
return;
}
int diff_x = event.x() - m_transform_event_origin.x();
int diff_y = event.y() - m_transform_event_origin.y();
int change_x = 0;
int change_y = 0;
int change_w = 0;
int change_h = 0;
switch (m_resize_direction) {
case Direction::DownRight:
change_w = diff_x;
change_h = diff_y;
break;
case Direction::Right:
change_w = diff_x;
break;
case Direction::UpRight:
change_w = diff_x;
change_y = diff_y;
change_h = -diff_y;
break;
case Direction::Up:
change_y = diff_y;
change_h = -diff_y;
break;
case Direction::UpLeft:
change_x = diff_x;
change_w = -diff_x;
change_y = diff_y;
change_h = -diff_y;
break;
case Direction::Left:
change_x = diff_x;
change_w = -diff_x;
break;
case Direction::DownLeft:
change_x = diff_x;
change_w = -diff_x;
change_h = diff_y;
break;
case Direction::Down:
change_h = diff_y;
break;
default:
ASSERT_NOT_REACHED();
}
auto new_rect = m_transform_widget_origin_rect;
Size minimum_size { 5, 5 };
new_rect.set_x(new_rect.x() + change_x);
new_rect.set_y(new_rect.y() + change_y);
new_rect.set_width(max(minimum_size.width(), new_rect.width() + change_w));
new_rect.set_height(max(minimum_size.height(), new_rect.height() + change_h));
new_rect.set_x(new_rect.x() - (new_rect.x() % m_grid_size));
new_rect.set_y(new_rect.y() - (new_rect.y() % m_grid_size));
new_rect.set_width(new_rect.width() - (new_rect.width() % m_grid_size));
new_rect.set_height(new_rect.height() - (new_rect.height() % m_grid_size));
m_selected_widget->set_rect(new_rect);
update();
}
@ -87,5 +164,6 @@ void VBForm::mouseup_event(GMouseEvent& event)
if (event.button() == GMouseButton::Left) {
m_transform_event_origin = { };
m_transform_widget_origin_rect = { };
m_resize_direction = Direction::None;
}
}