things

ugui.h

@@ -0,0 +1,63 @@
+#ifndef _UGUI_H
+#define _UGUI_H
+
+#include <stdint.h>
+
+typedef struct {
+	int32_t x, y, w, h;
+} UgRect;
+
+typedef struct {
+	int32_t x, y;
+} UgPoint;
+
+typedef struct {
+	uint8_t r, g, b, a;
+} UgColor;
+
+typedef enum {
+	ETYPE_NONE = 0,
+	ETYPE_BUTTON,
+	ETYPE_TEXT,
+	ETYPE_SCROLL,
+	ETYPE_SLIDER,
+} UgElemType;
+
+typedef struct {
+	uint64_t id;
+	UgRect rec;
+	union {
+		uint32_t type_int;
+		UgElemType type;
+	};
+} UgElem;
+
+// TODO: add a packed flag
+// TODO: add a fill index to skip some searching for free spots
+
+typedef struct {
+	int size, elements;
+	uint32_t *vector; // vector of element ids
+	int *refs, *ordered_refs;
+} UgTree;
+
+typedef struct {
+	UgTree tree;
+} UgCtx;
+
+// tree implementation
+int ug_tree_init(UgTree *tree, unsigned int size); 
+int ug_tree_pack(UgTree *tree);
+int ug_tree_resize(UgTree *tree, unsigned int newsize);
+int ug_tree_add(UgTree *tree, uint32_t elem, int parent);
+int ug_tree_prune(UgTree *tree, int ref);
+int ug_tree_subtree_size(UgTree *tree, int ref);
+int ug_tree_children_it(UgTree *tree, int parent, int *cursor);
+int ug_tree_level_order_it(UgTree *tree, int ref, int *cursor);
+int ug_tree_destroy(UgTree *tree);
+
+int ug_init(UgCtx *ctx);
+int ug_destroy(UgCtx *ctx);
+
+#endif // _UGUI_H
+