implementing color wheel and new color picker

engine/node_dialog_picker.cpp

@@ -0,0 +1,55 @@
+#include "pch.h"
+#include "log.h"
+#include "util.h"
+#include "canvas.h"
+#include "node_dialog_picker.h"
+
+Node* NodeColorPicker::clone_instantiate() const
+{
+    return new NodeColorPicker;
+}
+
+void NodeColorPicker::clone_finalize(Node* dest) const
+{
+    auto n = static_cast<NodeColorPicker*>(dest);
+    n->init_controls();
+}
+
+void NodeColorPicker::init()
+{
+    auto n = (NodeColorPicker*)init_template("color-picker");
+    n->clone_copy(this);
+    init_controls();
+}
+
+void NodeColorPicker::draw()
+{
+    NodeBorder::draw();
+    glm::vec3 rgb = glm::vec3(ui::Canvas::I->m_current_brush.m_tip_color);
+    glm::vec3 hsv = convert_rgb2hsv(rgb);
+    m_slider_h->set_value(hsv.x);
+    m_slider_s->set_value(hsv.y);
+    m_slider_v->set_value(hsv.z);
+    m_slider_r->set_value(rgb.x);
+    m_slider_g->set_value(rgb.y);
+    m_slider_b->set_value(rgb.z);
+}
+
+void NodeColorPicker::init_controls()
+{
+    m_slider_h = find<NodeSliderH>("hsv-h");
+    m_slider_s = find<NodeSliderH>("hsv-s");
+    m_slider_v = find<NodeSliderH>("hsv-v");
+    m_slider_r = find<NodeSliderH>("rgb-r");
+    m_slider_g = find<NodeSliderH>("rgb-g");
+    m_slider_b = find<NodeSliderH>("rgb-b");
+    m_wheel = find<NodeColorWheel>("wheel");
+}
+
+glm::vec4 NodeColorPicker::get_hsv() const
+{
+    float h = m_slider_h->get_value();
+    float s = m_slider_s->get_value();
+    float v = m_slider_v->get_value();
+    return glm::vec4(h, s, v, 1.f);
+}