Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/rdtk/librdtk/rdtk_label.c

@@ -0,0 +1,103 @@
+/**
+ * RdTk: Remote Desktop Toolkit
+ *
+ * Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ *
+ * 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.
+ */
+
+#include <winpr/assert.h>
+
+#include <rdtk/config.h>
+
+#include "rdtk_font.h"
+
+#include "rdtk_label.h"
+
+int rdtk_label_draw(rdtkSurface* surface, uint16_t nXDst, uint16_t nYDst, uint16_t nWidth,
+                    uint16_t nHeight, WINPR_ATTR_UNUSED rdtkLabel* label, const char* text,
+                    WINPR_ATTR_UNUSED uint16_t hAlign, WINPR_ATTR_UNUSED uint16_t vAlign)
+{
+	uint16_t offsetX = 0;
+	uint16_t offsetY = 0;
+	uint16_t textWidth = 0;
+	uint16_t textHeight = 0;
+
+	WINPR_ASSERT(surface);
+
+	rdtkEngine* engine = surface->engine;
+	rdtkFont* font = engine->font;
+
+	const int rc1 = rdtk_font_text_draw_size(font, &textWidth, &textHeight, text);
+	if (rc1 < 0)
+		return rc1;
+
+	if ((textWidth > 0) && (textHeight > 0))
+	{
+		offsetX = 0;
+		offsetY = 0;
+
+		if (textWidth < nWidth)
+			offsetX = ((nWidth - textWidth) / 2);
+
+		if (textHeight < nHeight)
+			offsetY = ((nHeight - textHeight) / 2);
+
+		const int rc2 = rdtk_font_draw_text(surface, nXDst + offsetX, nYDst + offsetY, font, text);
+		if (rc2 < 0)
+			return rc2;
+	}
+
+	return 1;
+}
+
+rdtkLabel* rdtk_label_new(rdtkEngine* engine)
+{
+	WINPR_ASSERT(engine);
+	rdtkLabel* label = (rdtkLabel*)calloc(1, sizeof(rdtkLabel));
+
+	if (!label)
+		return nullptr;
+
+	label->engine = engine;
+
+	return label;
+}
+
+void rdtk_label_free(rdtkLabel* label)
+{
+	free(label);
+}
+
+int rdtk_label_engine_init(rdtkEngine* engine)
+{
+	WINPR_ASSERT(engine);
+	if (!engine->label)
+	{
+		engine->label = rdtk_label_new(engine);
+	}
+
+	return 1;
+}
+
+int rdtk_label_engine_uninit(rdtkEngine* engine)
+{
+	WINPR_ASSERT(engine);
+	if (engine->label)
+	{
+		rdtk_label_free(engine->label);
+		engine->label = nullptr;
+	}
+
+	return 1;
+}