Import of the watch repository from Pebble

src/fw/applib/graphics/text_render.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "applib/fonts/codepoint.h"
+#include "applib/fonts/fonts_private.h"
+#include "applib/graphics/gtypes.h"
+
+#include "gtypes.h"
+
+#include <inttypes.h>
+
+typedef struct GContext GContext;
+
+typedef void (*SpecialCodepointHandlerCb)(GContext *ctx, Codepoint codepoint, GRect cursor,
+              void *context);
+
+void render_glyph(GContext* const ctx, const uint32_t codepoint, FontInfo* const font,
+                  const GRect cursor);
+
+// This function sets a handler callback for handling special codepoints encountered during text
+// rendering. This allows special draw operations at the cursor position that the codepoint occurs.
+// This must be set to NULL when the window using it goes out of focus.
+void text_render_set_special_codepoint_cb(SpecialCodepointHandlerCb handler, void *context);