[all] Rationalize style::Image

A style has a collection of images, just as it has collections of sources and layers.

* Name things appropriately
* Use std::unique_ptr

1 files changed, 22 insertions, 0 deletions

diff --git a/src/mbgl/style/image.cpp b/src/mbgl/style/image.cpp
new file mode 100644
index 0000000000..4c0c6a859b
--- /dev/null
+++ b/src/mbgl/style/image.cpp
@@ -0,0 +1,22 @@
+#include <mbgl/style/image.hpp>
+#include <mbgl/util/exception.hpp>
+
+namespace mbgl {
+namespace style {
+
+Image::Image(PremultipliedImage&& image_,
+             const float pixelRatio_,
+             bool sdf_)
+    : image(std::move(image_)),
+      pixelRatio(pixelRatio_),
+      sdf(sdf_) {
+
+    if (!image.valid()) {
+        throw util::SpriteImageException("Sprite image dimensions may not be zero");
+    } else if (pixelRatio <= 0) {
+        throw util::SpriteImageException("Sprite pixelRatio may not be <= 0");
+    }
+}
+
+} // namespace style
+} // namespace mbgl