VisualBuilder: Make it possible to insert widgets from the toolbox.

Applications/VisualBuilder/VBForm.cpp

@@ -2,10 +2,17 @@
 #include "VBWidget.h"
 #include <LibGUI/GPainter.h>
 
+static VBForm* s_current;
+VBForm* VBForm::current()
+{
+    return s_current;
+}
+
 VBForm::VBForm(const String& name, GWidget* parent)
     : GWidget(parent)
     , m_name(name)
 {
+    s_current = this;
     set_fill_with_background_color(true);
     set_background_color(Color::LightGray);
     set_greedy_for_hits(true);
@@ -23,6 +30,14 @@ VBForm::VBForm(const String& name, GWidget* parent)
     m_widgets.append(move(button1));
 }
 
+void VBForm::insert_widget(WidgetType type)
+{
+    auto widget = VBWidget::create(type, *this);
+    widget->set_rect({ m_next_insertion_position, { m_grid_size * 10 + 1, m_grid_size * 5 + 1 } });
+    m_next_insertion_position.move_by(m_grid_size, m_grid_size);
+    m_widgets.append(move(widget));
+}
+
 VBForm::~VBForm()
 {
 }

Applications/VisualBuilder/VBForm.h

@@ -9,6 +9,8 @@ public:
     explicit VBForm(const String& name, GWidget* parent = nullptr);
     virtual ~VBForm() override;
 
+    static VBForm* current();
+
     String name() const { return m_name; }
     void set_name(const String& name) { m_name = name; }
 
@@ -18,6 +20,8 @@ public:
     void set_should_snap_to_grip(bool snap) { m_should_snap_to_grid = snap; }
     bool should_snap_to_grid() const { return m_should_snap_to_grid; }
 
+    void insert_widget(WidgetType);
+
 protected:
     virtual void paint_event(GPaintEvent&) override;
     virtual void second_paint_event(GPaintEvent&) override;
@@ -35,5 +39,6 @@ private:
     WeakPtr<VBWidget> m_selected_widget;
     Point m_transform_event_origin;
     Rect m_transform_widget_origin_rect;
+    Point m_next_insertion_position;
     Direction m_resize_direction { Direction::None };
 };

Applications/VisualBuilder/main.cpp

@@ -2,14 +2,9 @@
 #include <LibGUI/GWidget.h>
 #include <LibGUI/GBoxLayout.h>
 #include <LibGUI/GApplication.h>
-#include <LibGUI/GStatusBar.h>
-#include <LibGUI/GToolBar.h>
 #include <LibGUI/GMenuBar.h>
-#include <LibGUI/GTextEditor.h>
 #include <LibGUI/GAction.h>
-#include <LibGUI/GFontDatabase.h>
+#include <LibGUI/GButton.h>
-#include <LibCore/CFile.h>
-#include <AK/StringBuilder.h>
 #include "VBForm.h"
 #include "VBWidget.h"
 #include <unistd.h>
@@ -68,6 +63,26 @@ GWindow* make_toolbox_window()
 
     auto* widget = new GWidget;
     widget->set_fill_with_background_color(true);
+    widget->set_layout(make<GBoxLayout>(Orientation::Vertical));
     window->set_main_widget(widget);
+
+    auto* button_button = new GButton(widget);
+    button_button->set_caption("Button");
+    button_button->on_click = [] (GButton&) {
+        if (auto* form = VBForm::current())
+            form->insert_widget(WidgetType::GButton);
+    };
+    auto* spinbox_button = new GButton(widget);
+    spinbox_button->set_caption("SpinBox");
+    spinbox_button->on_click = [] (GButton&) {
+        if (auto* form = VBForm::current())
+            form->insert_widget(WidgetType::GSpinBox);
+    };
+    auto* editor_button = new GButton(widget);
+    editor_button->set_caption("TextEditor");
+    editor_button->on_click = [] (GButton&) {
+        if (auto* form = VBForm::current())
+            form->insert_widget(WidgetType::GTextEditor);
+    };
     return window;
 }