LibGUI: Add a ToolBarContainer widget and put most ToolBars in one

This mimics the Explorer toolbar container from Windows 2000 and looks
pretty neat! :^)

Libraries/LibGUI/Makefile

@@ -65,6 +65,7 @@ OBJS = \
     TextDocument.o \
     TextEditor.o \
     ToolBar.o \
+    ToolBarContainer.o \
     TreeView.o \
     UndoStack.o \
     Variant.o \

Libraries/LibGUI/StatusBar.cpp

@@ -39,7 +39,7 @@ StatusBar::StatusBar(int label_count)
     set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
     set_preferred_size(0, 20);
     set_layout<HorizontalBoxLayout>();
-    layout()->set_margins({ 0, 3, 0, 0 });
+    layout()->set_margins({ 0, 0, 0, 0 });
     layout()->set_spacing(2);
 
     if (label_count < 1)

Libraries/LibGUI/ToolBar.cpp

@@ -39,10 +39,10 @@ ToolBar::ToolBar(Orientation orientation, int button_size)
 {
     if (orientation == Orientation::Horizontal) {
         set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
-        set_preferred_size(0, button_size + 10);
+        set_preferred_size(0, button_size + 8);
     } else {
         set_size_policy(SizePolicy::Fixed, SizePolicy::Fill);
-        set_preferred_size(button_size + 10, 0);
+        set_preferred_size(button_size + 8, 0);
     }
     set_layout<BoxLayout>(orientation);
     layout()->set_spacing(0);
@@ -111,9 +111,9 @@ void ToolBar::paint_event(PaintEvent& event)
     Painter painter(*this);
     painter.add_clip_rect(event.rect());
 
-    if (m_has_frame)
-        Gfx::StylePainter::paint_surface(painter, rect(), palette(), x() != 0, y() != 0);
-    else
+    //if (m_has_frame)
+//        Gfx::StylePainter::paint_surface(painter, rect(), palette(), x() != 0, y() != 0);
+//    else
         painter.fill_rect(event.rect(), palette().button());
 }
 

Libraries/LibGUI/ToolBarContainer.cpp

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Painter.h>
+#include <LibGUI/ToolBarContainer.h>
+#include <LibGfx/Palette.h>
+#include <LibGfx/StylePainter.h>
+
+namespace GUI {
+
+void ToolBarContainer::did_add_toolbar(Widget& toolbar)
+{
+    m_toolbars.append(toolbar);
+    int preferred_size = 4 + (m_toolbars.size() - 1) * 2;
+
+    for (auto& toolbar : m_toolbars) {
+        if (m_orientation == Gfx::Orientation::Horizontal)
+            preferred_size += toolbar.preferred_size().height();
+        else
+            preferred_size += toolbar.preferred_size().width();
+    }
+
+    if (m_orientation == Gfx::Orientation::Horizontal)
+        set_preferred_size(0, preferred_size);
+    else
+        set_preferred_size(preferred_size, 0);
+}
+
+ToolBarContainer::ToolBarContainer(Gfx::Orientation orientation)
+    : m_orientation(orientation)
+{
+    set_fill_with_background_color(true);
+
+    set_frame_thickness(2);
+    set_frame_shape(Gfx::FrameShape::Box);
+    set_frame_shadow(Gfx::FrameShadow::Sunken);
+
+    if (m_orientation == Gfx::Orientation::Horizontal)
+        set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
+    else
+        set_size_policy(SizePolicy::Fixed, SizePolicy::Fill);
+
+    auto& layout = set_layout<VerticalBoxLayout>();
+    layout.set_spacing(2);
+    layout.set_margins({ 2, 2, 2, 2 });
+}
+
+void ToolBarContainer::paint_event(GUI::PaintEvent& event)
+{
+    Painter painter(*this);
+    painter.add_clip_rect(event.rect());
+
+    for (auto& toolbar : m_toolbars) {
+        auto rect = toolbar.relative_rect();
+        painter.draw_line(rect.top_left().translated(0, -1), rect.top_right().translated(0, -1), palette().threed_highlight());
+        painter.draw_line(rect.bottom_left().translated(0, 1), rect.bottom_right().translated(0, 1), palette().threed_shadow1());
+    }
+
+    Frame::paint_event(event);
+}
+
+}

Libraries/LibGUI/ToolBarContainer.h

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibGUI/Frame.h>
+#include <LibGUI/ToolBar.h>
+
+namespace GUI {
+
+class ToolBarContainer : public Frame {
+    C_OBJECT(ToolBarContainer);
+
+public:
+    template<class T, class... Args>
+    inline T& add(Args&&... args)
+    {
+        auto& child = Frame::add<T>(forward<Args>(args)...);
+        did_add_toolbar(child);
+        return child;
+    }
+
+private:
+    explicit ToolBarContainer(Gfx::Orientation = Gfx::Orientation::Horizontal);
+
+    virtual void paint_event(GUI::PaintEvent&) override;
+
+    void did_add_toolbar(Widget&);
+
+    Gfx::Orientation m_orientation { Gfx::Orientation::Horizontal };
+
+    NonnullRefPtrVector<Widget> m_toolbars;
+};
+
+}