Allow floating configuration to capture pointer (#66)

README.md

@@ -1234,11 +1234,11 @@ Rendering of borders and rounded corners is left up to the user. See the provide
 ### CLAY_FLOATING
 **Usage**
 
-`CLAY_FLOATING(Clay_ElementId id, Clay_LayoutConfig *layoutConfig, Clay_FloatingElementConfig *floatingConfig);`
+`CLAY(CLAY_FLOATING(...floating config)) {}`
 
 **Lifecycle**
 
-`Clay_BeginLayout()` -> `CLAY_FLOATING()` -> `Clay_EndLayout()` 
+`Clay_BeginLayout()` -> `CLAY(` -> `CLAY_FLOATING()` -> `)` -> `Clay_EndLayout()` 
 
 **Notes**
 
@@ -1272,6 +1272,10 @@ Clay_FloatingElementConfig {
         .element = CLAY_ATTACH_POINT_LEFT_TOP (default) | CLAY_ATTACH_POINT_LEFT_CENTER | CLAY_ATTACH_POINT_LEFT_BOTTOM | CLAY_ATTACH_POINT_CENTER_TOP | CLAY_ATTACH_POINT_CENTER_CENTER | CLAY_ATTACH_POINT_CENTER_BOTTOM | CLAY_ATTACH_POINT_RIGHT_TOP | CLAY_ATTACH_POINT_RIGHT_CENTER | CLAY_ATTACH_POINT_RIGHT_BOTTOM
         .parent = CLAY_ATTACH_POINT_LEFT_TOP (default) | CLAY_ATTACH_POINT_LEFT_CENTER | CLAY_ATTACH_POINT_LEFT_BOTTOM | CLAY_ATTACH_POINT_CENTER_TOP | CLAY_ATTACH_POINT_CENTER_CENTER | CLAY_ATTACH_POINT_CENTER_BOTTOM | CLAY_ATTACH_POINT_RIGHT_TOP | CLAY_ATTACH_POINT_RIGHT_CENTER | CLAY_ATTACH_POINT_RIGHT_BOTTOM
     };
+    Clay_PointerCaptureMode captureMode {
+        CLAY_POINTER_CAPTURE_MODE_CAPTURE (default),
+        CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH
+    };
 };
 ```
 
@@ -1393,6 +1397,12 @@ For example:
 
 ![Screenshot 2024-08-23 at 11 53 24 AM](https://github.com/user-attachments/assets/ebe75e0d-1904-46b0-982d-418f929d1516)
 
+**`.pointerCaptureMode`** - `Clay_PointerCaptureMode`
+
+`CLAY_FLOATING({ .pointerCaptureMode = CLAY_POINTER_CAPTURE_MODE_CAPTURE })`
+
+Controls whether pointer events like hover and click should pass through to content underneath this floating element, or whether the pointer should be "captured" by this floating element. Defaults to `CLAY_POINTER_CAPTURE_MODE_CAPTURE`. 
+
 **Examples**
 
 ```C

bindings/odin/clay-odin/clay.odin

@@ -154,12 +154,18 @@ FloatingAttachPoints :: struct {
     parent:  FloatingAttachPointType,
 }
 
+PointerCaptureMode :: enum EnumBackingType {
+    CAPTURE,
+    PASSTHROUGH,
+}
+
 FloatingElementConfig :: struct {
-    offset:     Vector2,
-    expand:     Dimensions,
-    zIndex:     u16,
-    parentId:   u32,
-    attachment: FloatingAttachPoints,
+    offset:             Vector2,
+    expand:             Dimensions,
+    zIndex:             u16,
+    parentId:           u32,
+    attachment:         FloatingAttachPoints,
+    pointerCaptureMode: PointerCaptureMode,
 }
 
 ElementConfigUnion :: struct #raw_union {

clay.h

@@ -314,6 +314,12 @@ typedef struct
     Clay_FloatingAttachPointType parent;
 } Clay_FloatingAttachPoints;
 
+typedef enum {
+    CLAY_POINTER_CAPTURE_MODE_CAPTURE,
+//    CLAY_POINTER_CAPTURE_MODE_PARENT, TODO pass pointer through to attached parent
+    CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH,
+} Clay_PointerCaptureMode;
+
 typedef struct
 {
     Clay_Vector2 offset;
@@ -321,6 +327,7 @@ typedef struct
     uint16_t zIndex;
     uint32_t parentId;
     Clay_FloatingAttachPoints attachment;
+    Clay_PointerCaptureMode pointerCaptureMode;
 } Clay_FloatingElementConfig;
 
 // Custom
@@ -3513,11 +3520,12 @@ void Clay_SetPointerState(Clay_Vector2 position, bool isPointerDown) {
     Clay__pointerInfo.position = position;
     Clay__pointerOverIds.length = 0;
     Clay__int32_tArray dfsBuffer = Clay__layoutElementChildrenBuffer;
-    for (int rootIndex = 0; rootIndex < Clay__layoutElementTreeRoots.length; ++rootIndex) {
+    for (int rootIndex = Clay__layoutElementTreeRoots.length - 1; rootIndex >= 0; --rootIndex) {
         dfsBuffer.length = 0;
         Clay__LayoutElementTreeRoot *root = Clay__LayoutElementTreeRootArray_Get(&Clay__layoutElementTreeRoots, rootIndex);
         Clay__int32_tArray_Add(&dfsBuffer, (int32_t)root->layoutElementIndex);
         Clay__treeNodeVisited.internalArray[0] = false;
+        bool found = false;
         while (dfsBuffer.length > 0) {
             if (Clay__treeNodeVisited.internalArray[dfsBuffer.length - 1]) {
                 dfsBuffer.length--;
@@ -3535,6 +3543,7 @@ void Clay_SetPointerState(Clay_Vector2 position, bool isPointerDown) {
                         mapItem->onHoverFunction(mapItem->elementId, Clay__pointerInfo, mapItem->hoverFunctionUserData);
                     }
                     Clay__ElementIdArray_Add(&Clay__pointerOverIds, mapItem->elementId);
+                    found = true;
                 }
                 if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT)) {
                     dfsBuffer.length--;
@@ -3548,6 +3557,12 @@ void Clay_SetPointerState(Clay_Vector2 position, bool isPointerDown) {
                 dfsBuffer.length--;
             }
         }
+
+        Clay_LayoutElement *rootElement = Clay_LayoutElementArray_Get(&Clay__layoutElements, root->layoutElementIndex);
+        if (found && Clay__ElementHasConfig(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING_CONTAINER) &&
+                Clay__FindElementConfigWithType(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING_CONTAINER).floatingElementConfig->pointerCaptureMode == CLAY_POINTER_CAPTURE_MODE_CAPTURE) {
+            break;
+        }
     }
 
     if (isPointerDown) {