Route stroke panel view through app core

src/app_core/brush_ui.h

@@ -6,6 +6,8 @@
 #include <cmath>
 #include <string>
 #include <string_view>
+#include <utility>
+#include <vector>
 
 namespace pp::app {
 
@@ -175,6 +177,41 @@ struct BrushStrokeControlPlan {
     bool notifies_stroke_change = false;
 };
 
+struct BrushStrokeFloatValue {
+    BrushStrokeFloatSetting setting = BrushStrokeFloatSetting::tip_size;
+    float value = 0.0F;
+};
+
+struct BrushStrokeBoolValue {
+    BrushStrokeBoolSetting setting = BrushStrokeBoolSetting::tip_angle_init;
+    bool value = false;
+};
+
+struct BrushStrokeBlendValue {
+    BrushStrokeBlendSetting setting = BrushStrokeBlendSetting::tip;
+    int blend_mode = 0;
+};
+
+struct BrushStrokePanelInput {
+    std::vector<BrushStrokeFloatValue> float_values;
+    std::vector<BrushStrokeBoolValue> bool_values;
+    std::vector<BrushStrokeBlendValue> blend_values;
+    std::string tip_thumbnail_path;
+    std::string dual_thumbnail_path;
+    std::string pattern_thumbnail_path;
+};
+
+struct BrushStrokePanelView {
+    std::vector<BrushStrokeFloatValue> float_values;
+    std::vector<BrushStrokeBoolValue> bool_values;
+    std::vector<BrushStrokeBlendValue> blend_values;
+    std::string tip_thumbnail_path;
+    std::string dual_thumbnail_path;
+    std::string pattern_thumbnail_path;
+    bool updates_preview = true;
+    bool updates_thumbnails = true;
+};
+
 class BrushUiServices {
 public:
     virtual ~BrushUiServices() = default;
@@ -278,6 +315,33 @@ public:
     return pp::foundation::Status::success();
 }
 
+[[nodiscard]] inline pp::foundation::Result<BrushStrokePanelView> plan_brush_stroke_panel_view(
+    BrushStrokePanelInput input)
+{
+    for (const auto& value : input.float_values) {
+        const auto status = validate_brush_stroke_float(value.value);
+        if (!status.ok()) {
+            return pp::foundation::Result<BrushStrokePanelView>::failure(status);
+        }
+    }
+
+    for (const auto& value : input.blend_values) {
+        const auto status = validate_brush_stroke_blend_mode(value.blend_mode);
+        if (!status.ok()) {
+            return pp::foundation::Result<BrushStrokePanelView>::failure(status);
+        }
+    }
+
+    BrushStrokePanelView view;
+    view.float_values = std::move(input.float_values);
+    view.bool_values = std::move(input.bool_values);
+    view.blend_values = std::move(input.blend_values);
+    view.tip_thumbnail_path = std::move(input.tip_thumbnail_path);
+    view.dual_thumbnail_path = std::move(input.dual_thumbnail_path);
+    view.pattern_thumbnail_path = std::move(input.pattern_thumbnail_path);
+    return pp::foundation::Result<BrushStrokePanelView>::success(std::move(view));
+}
+
 [[nodiscard]] inline pp::foundation::Result<BrushUiPlan> plan_brush_ui_color(
     float r,
     float g,