1 files changed, 56 insertions, 150 deletions

diff --git a/src/ui/render/RenderObject.cpp b/src/ui/render/RenderObject.cpp
index 00488425..67bbae12 100644
--- a/src/ui/render/RenderObject.cpp
+++ b/src/ui/render/RenderObject.cpp
@@ -1,66 +1,15 @@
 #include "cru/ui/render/RenderObject.h"
 
 #include "cru/common/Logger.h"
-#include "cru/platform/GraphicsBase.h"
-#include "cru/platform/graphics/util/Painter.h"
-#include "cru/ui/Base.h"
 #include "cru/ui/DebugFlags.h"
+#include "cru/ui/controls/Control.h"
 #include "cru/ui/host/WindowHost.h"
 
-#include <algorithm>
-#include <string>
-#include <string_view>
-#include <vector>
-
 namespace cru::ui::render {
 void RenderObject::SetAttachedControl(controls::Control* new_control) {
+  auto old_control = control_;
   control_ = new_control;
-  OnAttachedControlChanged(new_control);
-}
-
-void RenderObject::AddChild(RenderObject* render_object, const Index position) {
-  Expects(child_mode_ != ChildMode::None);
-  Expects(!(child_mode_ == ChildMode::Single && children_.size() > 0));
-
-  Expects(render_object->GetParent() ==
-          nullptr);        // Render object already has a parent.
-  Expects(position >= 0);  // Position index is less than 0.
-  Expects(
-      position <=
-      static_cast<Index>(children_.size()));  // Position index is out of bound.
-
-  children_.insert(children_.cbegin() + position, render_object);
-  render_object->SetParent(this);
-  render_object->SetWindowHostRecursive(GetWindowHost());
-  OnAddChild(render_object, position);
-}
-
-void RenderObject::RemoveChild(const Index position) {
-  Expects(position >= 0);  // Position index is less than 0.
-  Expects(position < static_cast<Index>(
-                         children_.size()));  // Position index is out of bound.
-
-  const auto i = children_.cbegin() + position;
-  const auto removed_child = *i;
-  children_.erase(i);
-  removed_child->SetParent(nullptr);
-  removed_child->SetWindowHostRecursive(nullptr);
-  OnRemoveChild(removed_child, position);
-}
-
-RenderObject* RenderObject::GetFirstChild() const {
-  const auto& children = GetChildren();
-  if (children.empty()) {
-    return nullptr;
-  } else {
-    return children.front();
-  }
-}
-
-void RenderObject::TraverseDescendants(
-    const std::function<void(RenderObject*)>& action) {
-  action(this);
-  for (auto child : children_) child->TraverseDescendants(action);
+  OnAttachedControlChanged(old_control, new_control);
 }
 
 Point RenderObject::GetTotalOffset() const {
@@ -84,6 +33,31 @@ Point RenderObject::FromRootToContent(const Point& point) const {
                point.y - (offset.y + rect.top)};
 }
 
+void RenderObject::SetMargin(const Thickness& margin) {
+  margin_ = margin;
+  InvalidateLayout();
+}
+
+void RenderObject::SetPadding(const Thickness& padding) {
+  padding_ = padding;
+  InvalidateLayout();
+}
+
+void RenderObject::SetPreferredSize(const MeasureSize& preferred_size) {
+  preferred_size_ = preferred_size;
+  InvalidateLayout();
+}
+
+void RenderObject::SetMinSize(const MeasureSize& min_size) {
+  custom_measure_requirement_.min = min_size;
+  InvalidateLayout();
+}
+
+void RenderObject::SetMaxSize(const MeasureSize& max_size) {
+  custom_measure_requirement_.max = max_size;
+  InvalidateLayout();
+}
+
 void RenderObject::Measure(const MeasureRequirement& requirement,
                            const MeasureSize& preferred_size) {
   MeasureRequirement merged_requirement =
@@ -98,23 +72,27 @@ void RenderObject::Measure(const MeasureRequirement& requirement,
                preferred_size.ToDebugString());
   }
 
-  size_ = OnMeasureCore(merged_requirement, merged_preferred_size);
+  desired_size_ = OnMeasureCore(merged_requirement, merged_preferred_size);
 
   if constexpr (cru::ui::debug_flags::layout) {
     log::Debug(u"{} Measure ends :\nresult size: {}",
-               this->GetDebugPathInTree(), size_);
+               this->GetDebugPathInTree(), desired_size_);
   }
 
-  Ensures(size_.width >= 0);
-  Ensures(size_.height >= 0);
+  Ensures(desired_size_.width >= 0);
+  Ensures(desired_size_.height >= 0);
 }
 
 void RenderObject::Layout(const Point& offset) {
   if constexpr (cru::ui::debug_flags::layout) {
     log::Debug(u"{} Layout :\noffset: {} size: {}", this->GetDebugPathInTree(),
-               offset, GetSize());
+               offset, desired_size_);
   }
   offset_ = offset;
+  size_ = desired_size_;
+
+  OnResize(size_);
+
   OnLayoutCore();
 }
 
@@ -122,67 +100,6 @@ Thickness RenderObject::GetOuterSpaceThickness() const {
   return margin_ + padding_;
 }
 
-void RenderObject::Draw(platform::graphics::IPainter* painter) {
-  OnDrawCore(painter);
-}
-
-RenderObject* RenderObject::GetSingleChild() const {
-  Expects(child_mode_ == ChildMode::Single);
-  const auto& children = GetChildren();
-  if (children.empty())
-    return nullptr;
-  else
-    return children.front();
-}
-
-void RenderObject::OnParentChanged(RenderObject* old_parent,
-                                   RenderObject* new_parent) {
-  CRU_UNUSED(old_parent)
-  CRU_UNUSED(new_parent)
-}
-
-void RenderObject::OnAddChild(RenderObject* new_child, Index position) {
-  CRU_UNUSED(new_child)
-  CRU_UNUSED(position)
-
-  InvalidateLayout();
-  InvalidatePaint();
-}
-
-void RenderObject::OnRemoveChild(RenderObject* removed_child, Index position) {
-  CRU_UNUSED(removed_child)
-  CRU_UNUSED(position)
-
-  InvalidateLayout();
-  InvalidatePaint();
-}
-
-void RenderObject::DefaultDrawChildren(platform::graphics::IPainter* painter) {
-  for (const auto child : GetChildren()) {
-    auto offset = child->GetOffset();
-    platform::graphics::util::WithTransform(
-        painter, platform::Matrix::Translation(offset.x, offset.y),
-        [child](auto p) { child->Draw(p); });
-  }
-}
-
-void RenderObject::DefaultDrawContent(platform::graphics::IPainter* painter) {
-  const auto content_rect = GetContentRect();
-
-  platform::graphics::util::WithTransform(
-      painter, Matrix::Translation(content_rect.left, content_rect.top),
-      [this](auto p) { this->OnDrawContent(p); });
-}
-
-void RenderObject::OnDrawCore(platform::graphics::IPainter* painter) {
-  DefaultDrawContent(painter);
-  DefaultDrawChildren(painter);
-}
-
-void RenderObject::OnDrawContent(platform::graphics::IPainter* painter) {
-  CRU_UNUSED(painter);
-}
-
 Size RenderObject::OnMeasureCore(const MeasureRequirement& requirement,
                                  const MeasureSize& preferred_size) {
   const Thickness outer_space = GetOuterSpaceThickness();
@@ -204,7 +121,7 @@ Size RenderObject::OnMeasureCore(const MeasureRequirement& requirement,
 }
 
 void RenderObject::OnLayoutCore() {
-  Size total_size = GetSize();
+  Size total_size = GetDesiredSize();
   const Thickness outer_space = GetOuterSpaceThickness();
   const Size space_size{outer_space.GetHorizontalTotal(),
                         outer_space.GetVerticalTotal()};
@@ -231,10 +148,8 @@ void RenderObject::OnLayoutCore() {
   OnLayoutContent(content_rect);
 }
 
-void RenderObject::OnAfterLayout() {}
-
 Rect RenderObject::GetPaddingRect() const {
-  const auto size = GetSize();
+  const auto size = GetDesiredSize();
   Rect rect{Point{}, size};
   rect = rect.Shrink(GetMargin());
   rect.left = std::min(rect.left, size.width);
@@ -245,7 +160,7 @@ Rect RenderObject::GetPaddingRect() const {
 }
 
 Rect RenderObject::GetContentRect() const {
-  const auto size = GetSize();
+  const auto size = GetDesiredSize();
   Rect rect{Point{}, size};
   rect = rect.Shrink(GetMargin());
   rect = rect.Shrink(GetPadding());
@@ -256,33 +171,37 @@ Rect RenderObject::GetContentRect() const {
   return rect;
 }
 
-void RenderObject::SetParent(RenderObject* new_parent) {
-  const auto old_parent = parent_;
-  parent_ = new_parent;
-  OnParentChanged(old_parent, new_parent);
+host::WindowHost* RenderObject::GetWindowHost() {
+  if (control_) {
+    return control_->GetWindowHost();
+  }
+  return nullptr;
 }
 
 void RenderObject::InvalidateLayout() {
-  if (window_host_ != nullptr) window_host_->InvalidateLayout();
+  if (auto window_host = GetWindowHost()) {
+    window_host->InvalidateLayout();
+  }
 }
 
 void RenderObject::InvalidatePaint() {
-  if (window_host_ != nullptr) window_host_->InvalidatePaint();
+  if (auto window_host = GetWindowHost()) {
+    window_host->InvalidatePaint();
+  }
 }
 
-constexpr std::u16string_view kUnamedName(u"UNNAMED");
-
-std::u16string_view RenderObject::GetName() const { return kUnamedName; }
+String kUnamedName(u"UNNAMED");
+String RenderObject::GetName() const { return kUnamedName; }
 
-std::u16string RenderObject::GetDebugPathInTree() const {
-  std::vector<std::u16string_view> chain;
+String RenderObject::GetDebugPathInTree() const {
+  std::vector<String> chain;
   const RenderObject* parent = this;
   while (parent != nullptr) {
     chain.push_back(parent->GetName());
     parent = parent->GetParent();
   }
 
-  std::u16string result(chain.back());
+  String result(chain.back());
   for (auto iter = chain.crbegin() + 1; iter != chain.crend(); ++iter) {
     result += u" -> ";
     result += *iter;
@@ -290,17 +209,4 @@ std::u16string RenderObject::GetDebugPathInTree() const {
 
   return result;
 }
-
-void RenderObject::SetWindowHostRecursive(host::WindowHost* host) {
-  if (window_host_ != nullptr) {
-    detach_from_host_event_.Raise(nullptr);
-  }
-  window_host_ = host;
-  if (host != nullptr) {
-    attach_to_host_event_.Raise(nullptr);
-  }
-  for (const auto child : GetChildren()) {
-    child->SetWindowHostRecursive(host);
-  }
-}
 }  // namespace cru::ui::render