UI core boiler plate

engine/breeze/ui/ui.c

@@ -0,0 +1,67 @@
+#include "ui.h"
+#include "../memory/memory.h"
+#include "../util/object_pool.h"
+#include "../util/string.h"
+
+#include <stb_ds.h>
+
+typedef struct BzUI {
+    struct {
+        BzUIKey     key;
+        BzUIWidget *value;
+    } *widgetMap;
+    BzObjectPool *widgets;
+    BzUIWidget  **widgetStack;
+    BzUIWidget  *root;
+} BzUI;
+
+BzUIKey bzUIKeyNull() {
+    return 0;
+}
+BzUIKey bzUIKeyFromString(const char *str) {
+    return bzStringDefaultHash(str);
+}
+
+BzUI *bzUICreate() {
+    BzUI *ui = bzAlloc(sizeof(*ui));
+
+    ui->widgetMap = NULL;
+    ui->widgetStack = NULL;
+
+    ui->widgets = bzObjectPoolCreate(&(BzObjectPoolDesc) {
+        .objectsPerPage=128,
+        .objectSize=sizeof(BzUIWidget),
+    });
+
+    ui->root = bzObjectPool(ui->widgets);
+    bzMemSet(ui->root, 0, sizeof(*ui->root));
+    hmput(ui->widgetMap, bzUIKeyFromString("##root"), ui->root);
+    return ui;
+}
+void bzUIDestroy(BzUI *ui) {
+    hmfree(ui->widgetMap);
+    ui->widgetMap = NULL;
+    arrfree(ui->widgetStack);
+    ui->widgetStack = NULL;
+    bzObjectPoolDestroy(ui->widgets);
+    ui->widgets = NULL;
+    bzFree(ui);
+}
+
+void bzUIBegin(BzUI *ui, i32 width, i32 height) {
+    arrsetlen(ui->widgetStack, 0);
+    arrpush(ui->widgetStack, ui->root);
+
+    ui->root->semanticSize[BZ_UI_AXIS_X] = (BzUISize){
+        .kind = BZ_UI_SIZE_PIXELS,
+        .value = width
+    };
+    ui->root->semanticSize[BZ_UI_AXIS_Y] = (BzUISize) {
+        .kind = BZ_UI_SIZE_PIXELS,
+        .value = height
+    };
+
+}
+void bzUIEnd(BzUI *ui) {
+
+}