polygon node: early crude implementation

app/widget/viewer/viewerdisplay.cpp

@@ -30,6 +30,7 @@
 #include <QPainter>
 
 #include "common/define.h"
+#include "gizmotraverser.h"
 #include "render/backend/opengl/openglrenderfunctions.h"
 #include "render/backend/opengl/openglshader.h"
 #include "render/pixelformat.h"
@@ -44,7 +45,8 @@ ViewerDisplayWidget::ViewerDisplayWidget(QWidget *parent) :
   ManagedDisplayWidget(parent),
   has_image_(false),
   signal_cursor_color_(false),
-  gizmos_(nullptr)
+  gizmos_(nullptr),
+  gizmo_click_(false)
 {
 }
 
@@ -169,8 +171,33 @@ void ViewerDisplayWidget::SetGizmos(Node *node)
   update();
 }
 
+void ViewerDisplayWidget::SetVideoParams(const VideoRenderingParams &params)
+{
+  gizmo_params_ = params;
+
+  if (gizmos_) {
+    update();
+  }
+}
+
+void ViewerDisplayWidget::SetTime(const rational &time)
+{
+  time_ = time;
+
+  if (gizmos_) {
+    update();
+  }
+}
+
 void ViewerDisplayWidget::mousePressEvent(QMouseEvent *event)
 {
+  if (gizmos_) {
+    if (gizmos_->GizmoPress(GetTexturePosition(event->pos()))) {
+      gizmo_click_ = true;
+      return;
+    }
+  }
+
   QOpenGLWidget::mousePressEvent(event);
 
   emit DragStarted();
@@ -178,6 +205,11 @@ void ViewerDisplayWidget::mousePressEvent(QMouseEvent *event)
 
 void ViewerDisplayWidget::mouseMoveEvent(QMouseEvent *event)
 {
+  if (gizmo_click_) {
+    gizmos_->GizmoMove(GetTexturePosition(event->pos()));
+    return;
+  }
+
   QOpenGLWidget::mouseMoveEvent(event);
 
   if (signal_cursor_color_) {
@@ -201,6 +233,18 @@ void ViewerDisplayWidget::mouseMoveEvent(QMouseEvent *event)
   }
 }
 
+void ViewerDisplayWidget::mouseReleaseEvent(QMouseEvent *event)
+{
+  if (gizmo_click_) {
+    gizmos_->GizmoRelease(GetTexturePosition(event->pos()));
+    gizmo_click_ = false;
+
+    return;
+  }
+
+  QOpenGLWidget::mouseReleaseEvent(event);
+}
+
 void ViewerDisplayWidget::initializeGL()
 {
   ManagedDisplayWidget::initializeGL();
@@ -233,7 +277,7 @@ void ViewerDisplayWidget::paintGL()
   f->glClear(GL_COLOR_BUFFER_BIT);
 
   // We only draw if we have a pipeline
-  if (has_image_ && color_service() && texture_.IsCreated()) {
+  if (has_image_ && color_service()) {
 
     // Bind retrieved texture
     f->glBindTexture(GL_TEXTURE_2D, texture_.texture());
@@ -248,8 +292,19 @@ void ViewerDisplayWidget::paintGL()
 
   // Draw gizmos if we have any
   if (gizmos_) {
+    GizmoTraverser gt;
+
+    rational node_time = GetAdjustedTime(GetTimeTarget(), gizmos_, time_, NodeParam::kInput);
+
+    NodeValueDatabase db = gt.GenerateDatabase(gizmos_, TimeRange(node_time, node_time));
+
     QPainter p(this);
-    gizmos_->DrawGizmos(&p, rect());
+
+    // Scale so that gizmos can just draw on the buffer
+    QPointF tex_point = GetTexturePosition(size());
+    p.scale(tex_point.x(), tex_point.y());
+
+    gizmos_->DrawGizmos(db, &p);
   }
 
   // Draw action/title safe areas
@@ -285,6 +340,22 @@ void ViewerDisplayWidget::paintGL()
   }
 }
 
+QPointF ViewerDisplayWidget::GetTexturePosition(const QPoint &screen_pos)
+{
+  return GetTexturePosition(screen_pos.x(), screen_pos.y());
+}
+
+QPointF ViewerDisplayWidget::GetTexturePosition(const QSize &size)
+{
+  return GetTexturePosition(size.width(), size.height());
+}
+
+QPointF ViewerDisplayWidget::GetTexturePosition(const double &x, const double &y)
+{
+  return QPointF(x / gizmo_params_.width(),
+                 y / gizmo_params_.height());
+}
+
 #ifdef Q_OS_LINUX
 void ViewerDisplayWidget::ShowNouveauWarning()
 {