respect style background color

include/llmr/style/properties.hpp

@@ -113,9 +113,15 @@ struct FillProperties {
 };
 
 struct BackgroundClass {
-    Color fill_color = {{ 0, 0, 0, 0 }};
+    Color color = {{ 1, 1, 1, 1 }};
 };
 
+
+struct BackgroundProperties {
+    Color color = {{ 1, 1, 1, 1 }};
+};
+
+
 }
 
 #endif

include/llmr/style/style.hpp

@@ -52,6 +52,7 @@ public:
     // This are applied settings.
     std::set<std::string> appliedClasses;
     struct {
+        BackgroundProperties background;
         std::map<std::string, FillProperties> fills;
         std::map<std::string, LineProperties> lines;
         std::map<std::string, PointProperties> points;

src/renderer/painter.cpp

@@ -114,10 +114,8 @@ void Painter::prepareClippingMask() {
 }
 
 void Painter::drawClippingMask(const mat4& matrix, uint8_t clip_id) {
-    Color fill_color = {{ 1, 1, 1, 1 }};
-
     plainShader->setMatrix(matrix);
-    plainShader->setColor(fill_color);
+    plainShader->setColor(style.computed.background.color);
 
     glStencilFunc(GL_ALWAYS, clip_id, 0xFF);
     glDrawArrays(GL_TRIANGLES, 0, (GLsizei)tileStencilBuffer.index());

src/style/style.cpp

@@ -74,6 +74,9 @@ void Style::cascade(float z) {
             point.opacity = layer.opacity(z);
             point.image = layer.image;
         }
+
+        // Cascade background
+        computed.background.color = sheetClass.background.color;
     }
 }
 
@@ -562,7 +565,7 @@ BackgroundClass loadBackgroundClassJSON(const rapidjson::Value& value) {
     BackgroundClass klass;
 
     if (value.HasMember("color")) {
-        klass.fill_color = parseColor(value["color"]);
+        klass.color = parseColor(value["color"]);
     }
 
     return klass;