PaintBrush: Make it possible to switch colors using the PaletteWidget.

2 files changed, 79 insertions, 9 deletions

diff --git a/Applications/PaintBrush/PaletteWidget.cpp b/Applications/PaintBrush/PaletteWidget.cpp
index 9c83a4cd3d..171f3b34a1 100644
--- a/Applications/PaintBrush/PaletteWidget.cpp
+++ b/Applications/PaintBrush/PaletteWidget.cpp
@@ -1,8 +1,36 @@
 #include "PaletteWidget.h"
 #include "PaintableWidget.h"
+#include <LibGUI/GBoxLayout.h>
+
+class ColorWidget : public GWidget {
+public:
+    explicit ColorWidget(Color color, PaletteWidget& palette_widget, GWidget* parent)
+        : GWidget(parent)
+        , m_palette_widget(palette_widget)
+        , m_color(color)
+    {
+    }
+
+    virtual ~ColorWidget() override
+    {
+    }
+
+    virtual void mousedown_event(GMouseEvent& event) override
+    {
+        if (event.button() == GMouseButton::Left)
+            m_palette_widget.set_primary_color(m_color);
+        else if (event.button() == GMouseButton::Right)
+            m_palette_widget.set_secondary_color(m_color);
+    }
+
+private:
+    PaletteWidget& m_palette_widget;
+    Color m_color;
+};
 
 PaletteWidget::PaletteWidget(PaintableWidget& paintable_widget, GWidget* parent)
     : GFrame(parent)
+    , m_paintable_widget(paintable_widget)
 {
     set_frame_shape(FrameShape::Panel);
     set_frame_shadow(FrameShadow::Raised);
@@ -13,19 +41,53 @@ PaletteWidget::PaletteWidget(PaintableWidget& paintable_widget, GWidget* parent)
     set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
     set_preferred_size({ 0, 32 });
 
-    auto* secondary_color_widget = new GWidget(this);
-    secondary_color_widget->set_relative_rect({ 2, 2, 60, 28 });
-    secondary_color_widget->set_fill_with_background_color(true);
-    secondary_color_widget->set_background_color(paintable_widget.secondary_color());
+    m_secondary_color_widget = new GWidget(this);
+    m_secondary_color_widget->set_relative_rect({ 2, 2, 60, 28 });
+    m_secondary_color_widget->set_fill_with_background_color(true);
+    set_secondary_color(paintable_widget.secondary_color());
 
-    auto* primary_color_widget = new GWidget(this);
+    m_primary_color_widget = new GWidget(this);
     Rect rect { 0, 0, 38, 14 };
-    rect.center_within(secondary_color_widget->relative_rect());
-    primary_color_widget->set_relative_rect(rect);
-    primary_color_widget->set_fill_with_background_color(true);
-    primary_color_widget->set_background_color(paintable_widget.primary_color());
+    rect.center_within(m_secondary_color_widget->relative_rect());
+    m_primary_color_widget->set_relative_rect(rect);
+    m_primary_color_widget->set_fill_with_background_color(true);
+    set_primary_color(paintable_widget.primary_color());
+
+    auto* color_container = new GWidget(this);
+    color_container->set_relative_rect(m_secondary_color_widget->relative_rect().right() + 2, 2, 500, 28);
+    color_container->set_layout(make<GBoxLayout>(Orientation::Horizontal));
+    color_container->layout()->set_spacing(0);
+
+    auto add_color_widget = [&] (Color color) {
+        auto* color_widget = new ColorWidget(color, *this, color_container);
+        color_widget->set_fill_with_background_color(true);
+        color_widget->set_background_color(color);
+    };
+
+    add_color_widget(Color::Black);
+    add_color_widget(Color::White);
+    add_color_widget(Color::Red);
+    add_color_widget(Color::Green);
+    add_color_widget(Color::Blue);
+    add_color_widget(Color::Cyan);
+    add_color_widget(Color::Magenta);
+    add_color_widget(Color::Yellow);
 }
 
 PaletteWidget::~PaletteWidget()
 {
 }
+
+void PaletteWidget::set_primary_color(Color color)
+{
+    m_paintable_widget.set_primary_color(color);
+    m_primary_color_widget->set_background_color(color);
+    m_primary_color_widget->update();
+}
+
+void PaletteWidget::set_secondary_color(Color color)
+{
+    m_paintable_widget.set_secondary_color(color);
+    m_secondary_color_widget->set_background_color(color);
+    m_secondary_color_widget->update();
+}
diff --git a/Applications/PaintBrush/PaletteWidget.h b/Applications/PaintBrush/PaletteWidget.h
index 3a7d7758ff..e4e867a334 100644
--- a/Applications/PaintBrush/PaletteWidget.h
+++ b/Applications/PaintBrush/PaletteWidget.h
@@ -10,4 +10,12 @@ public:
     virtual ~PaletteWidget() override;
 
     virtual const char* class_name() const override { return "PaletteWidget"; }
+
+    void set_primary_color(Color);
+    void set_secondary_color(Color);
+
+private:
+    PaintableWidget& m_paintable_widget;
+    GWidget* m_primary_color_widget { nullptr };
+    GWidget* m_secondary_color_widget { nullptr };
 };