add way for adding/removing classes

1 files changed, 17 insertions, 0 deletions

diff --git a/include/llmr/style/style_layer.hpp b/include/llmr/style/style_layer.hpp
index fe5d3c3a6f..b45982b794 100644
--- a/include/llmr/style/style_layer.hpp
+++ b/include/llmr/style/style_layer.hpp
@@ -5,11 +5,13 @@
 #include <llmr/style/class_properties.hpp>
 #include <llmr/style/style_properties.hpp>
 #include <llmr/style/rasterize_properties.hpp>
+#include <llmr/style/applied_class_properties.hpp>
 
 #include <vector>
 #include <memory>
 #include <string>
 #include <map>
+#include <set>
 
 namespace llmr {
 
@@ -33,6 +35,15 @@ public:
 
     bool isBackground() const;
 
+    // Sets the list of classes and creates transitions to the currently applied values.
+    void setClasses(const std::vector<std::string> &class_names, timestamp now,
+                    const ClassPropertyTransition &defaultTransition);
+
+private:
+    // Applies all properties from a class, if they haven't been applied already.
+    void applyClassProperties(ClassID class_id, std::set<PropertyKey> &already_applied,
+                              timestamp now, const ClassPropertyTransition &defaultTransition);
+
 public:
     // The name of this layer.
     const std::string id;
@@ -44,6 +55,12 @@ public:
     // Contains all style classes that can be applied to this layer.
     const std::map<ClassID, ClassProperties> styles;
 
+private:
+    // For every property, stores a list of applied property values, with
+    // optional transition times.
+    std::map<PropertyKey, AppliedClassProperties> appliedStyle;
+
+public:
     // Stores the evaluated, and cascaded styling information, specific to this
     // layer's type.
     StyleProperties style;