get/set clipboard, color hex value

src/node_dialog_picker.cpp

@@ -84,6 +84,30 @@ void NodeColorPicker::init_controls()
     m_color_old = find<NodeBorder>("color-old");
     m_color_old1 = find<NodeBorder>("color-old1");
     m_color_old2 = find<NodeBorder>("color-old2");
+    m_btn_copy = find<NodeButton>("btn-hex-copy");
+    m_btn_paste = find<NodeButton>("btn-hex-paste");
+    m_txt_hex = find<NodeText>("txt-hex");
+
+    m_btn_paste->on_click = [this](Node*)
+    {
+        std::string s = clipboard_get_text();
+        std::regex r("#([\\dabcdefABCDEF]{6})");
+        std::smatch m;
+        if (std::regex_search(s, m, r))
+        {
+            unsigned long ul = std::stoul(m[1].str(), nullptr, 16);
+            uint8_t b = (ul >>  0) & 0xFF;
+            uint8_t g = (ul >>  8) & 0xFF;
+            uint8_t r = (ul >> 16) & 0xFF;
+            auto rgb = glm::vec3(r, g, b) / 255.f;
+            set_color(rgb);
+        }
+    };
+
+    m_btn_copy->on_click = [this](Node*)
+    {
+        clipboard_set_text(m_txt_hex->m_text);
+    };
 
     m_wheel->on_value_changed = [this](Node*, glm::vec3 hsv)
     {
@@ -98,6 +122,7 @@ void NodeColorPicker::init_controls()
         if (on_color_change)
             on_color_change(this, rgb);
         m_interacted = true;
+        update_hex(rgb);
     };
     auto hsv_setter = [this](Node* target, float v)
     {
@@ -111,6 +136,7 @@ void NodeColorPicker::init_controls()
         if (on_color_change)
             on_color_change(this, rgb);
         m_interacted = true;
+        update_hex(rgb);
     };
     m_slider_h->on_value_changed = hsv_setter;
     m_slider_s->on_value_changed = hsv_setter;
@@ -128,12 +154,20 @@ void NodeColorPicker::init_controls()
         if (on_color_change)
             on_color_change(this, rgb);
         m_interacted = true;
+        update_hex(rgb);
     };
     m_slider_r->on_value_changed = rgb_setter;
     m_slider_g->on_value_changed = rgb_setter;
     m_slider_b->on_value_changed = rgb_setter;
 }
 
+void NodeColorPicker::update_hex(glm::vec3 rgb)
+{
+    char tmp[32];
+    ultoa(convert_rgb_long(rgb), tmp, 16);
+    m_txt_hex->set_text_format("#%s", tmp);
+}
+
 void NodeColorPicker::set_color(glm::vec3 rgb)
 {
     auto hsv = convert_rgb2hsv(rgb);
@@ -146,6 +180,7 @@ void NodeColorPicker::set_color(glm::vec3 rgb)
     m_wheel->m_hsv = hsv;
     m_color_cur->m_color = { rgb, 1 };
     m_color_old->m_color = { rgb, 1 };
+    update_hex(rgb);
 }
 
 glm::vec3 NodeColorPicker::get_hsv() const