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Code Issues Activity Actions

VisualBuilder: Work on selecting a widget and moving it around.

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This commit is contained in:
Andreas Kling 2019-04-11 01:59:07 +02:00
parent 77a77b5bf7
commit 3c8e53ef2b
6 changed files with 167 additions and 5 deletions
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66
Applications/VisualBuilder/VBForm.cpp
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@ -1,4 +1,5 @@
#include "VBForm.h"
#include "VBWidget.h"
#include <LibGUI/GPainter.h>
VBForm::VBForm(const String& name, GWidget* parent)
@ -6,6 +7,14 @@ VBForm::VBForm(const String& name, GWidget* parent)
{
set_fill_with_background_color(true);
set_background_color(Color::LightGray);
auto box1 = VBWidget::create(*this);
box1->set_rect({ 10, 10, 61, 41 });
m_widgets.append(move(box1));
auto box2 = VBWidget::create(*this);
box2->set_rect({ 100, 100, 161, 141 });
m_widgets.append(move(box2));
}
VBForm::~VBForm()
@ -22,4 +31,61 @@ void VBForm::paint_event(GPaintEvent& event)
painter.set_pixel({ x, y }, Color::Black);
}
}
for (auto& widget : m_widgets) {
widget->paint(painter);
}
}
bool VBForm::is_selected(const VBWidget& widget) const
{
return &widget == m_selected_widget.ptr();
}
VBWidget* VBForm::widget_at(const Point& position)
{
for (int i = m_widgets.size() - 1; i >= 0; --i) {
auto& widget = *m_widgets[i];
if (widget.rect().contains(position))
return &widget;
}
return nullptr;
}
void VBForm::mousedown_event(GMouseEvent& event)
{
auto* widget = widget_at(event.position());
if (!widget) {
if (m_selected_widget) {
m_selected_widget = nullptr;
update();
}
return;
}
if (event.button() == GMouseButton::Left) {
m_selected_widget = widget->make_weak_ptr();
m_transform_event_origin = event.position();
m_transform_widget_origin_rect = widget->rect();
update();
}
}
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);
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();
}
}
void VBForm::mouseup_event(GMouseEvent& event)
{
if (event.button() == GMouseButton::Left) {
m_transform_event_origin = { };
m_transform_widget_origin_rect = { };
}
}