Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/rdtk/librdtk/rdtk_button.c

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+/**
+ * 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 <winpr/cast.h>
+
+#include <rdtk/config.h>
+
+#include "rdtk_font.h"
+
+#include "rdtk_button.h"
+
+int rdtk_button_draw(rdtkSurface* surface, uint16_t nXDst, uint16_t nYDst, uint16_t nWidth,
+                     uint16_t nHeight, rdtkButton* button, const char* text)
+{
+	uint16_t textWidth = 0;
+	uint16_t textHeight = 0;
+
+	WINPR_ASSERT(surface);
+	WINPR_ASSERT(button);
+	WINPR_ASSERT(text);
+
+	rdtkEngine* engine = surface->engine;
+	rdtkFont* font = engine->font;
+	rdtkNinePatch* ninePatch = button->ninePatch;
+
+	const int rc1 = rdtk_font_text_draw_size(font, &textWidth, &textHeight, text);
+	if (rc1 < 0)
+		return rc1;
+
+	const int rc2 = rdtk_nine_patch_draw(surface, nXDst, nYDst, nWidth, nHeight, ninePatch);
+	if (rc2 < 0)
+		return rc2;
+
+	if ((textWidth > 0) && (textHeight > 0))
+	{
+		const int wd = (ninePatch->width - ninePatch->fillWidth);
+		const int hd = (ninePatch->height - ninePatch->fillHeight);
+
+		const uint16_t fillWidth = nWidth - WINPR_ASSERTING_INT_CAST(uint16_t, wd);
+		const uint16_t fillHeight = nHeight - WINPR_ASSERTING_INT_CAST(uint16_t, hd);
+		uint16_t offsetX = WINPR_ASSERTING_INT_CAST(UINT16, ninePatch->fillLeft);
+		uint16_t offsetY = WINPR_ASSERTING_INT_CAST(UINT16, ninePatch->fillTop);
+
+		if (textWidth < fillWidth)
+		{
+			const int twd = ((fillWidth - textWidth) / 2) + ninePatch->fillLeft;
+			offsetX = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
+		}
+		else if (textWidth < ninePatch->width)
+		{
+			const int twd = ((ninePatch->width - textWidth) / 2);
+			offsetX = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
+		}
+
+		if (textHeight < fillHeight)
+		{
+			const int twd = ((fillHeight - textHeight) / 2) + ninePatch->fillTop;
+			offsetY = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
+		}
+		else if (textHeight < ninePatch->height)
+		{
+			const int twd = ((ninePatch->height - textHeight) / 2);
+			offsetY = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
+		}
+
+		return rdtk_font_draw_text(surface, nXDst + offsetX, nYDst + offsetY, font, text);
+	}
+
+	return 1;
+}
+
+rdtkButton* rdtk_button_new(rdtkEngine* engine, rdtkNinePatch* ninePatch)
+{
+	WINPR_ASSERT(engine);
+	WINPR_ASSERT(ninePatch);
+
+	rdtkButton* button = (rdtkButton*)calloc(1, sizeof(rdtkButton));
+
+	if (!button)
+		return nullptr;
+
+	button->engine = engine;
+	button->ninePatch = ninePatch;
+
+	return button;
+}
+
+void rdtk_button_free(rdtkButton* button)
+{
+	free(button);
+}
+
+int rdtk_button_engine_init(rdtkEngine* engine)
+{
+	WINPR_ASSERT(engine);
+
+	if (!engine->button)
+	{
+		engine->button = rdtk_button_new(engine, engine->button9patch);
+		if (!engine->button)
+			return -1;
+	}
+
+	return 1;
+}
+
+int rdtk_button_engine_uninit(rdtkEngine* engine)
+{
+	WINPR_ASSERT(engine);
+
+	if (engine->button)
+	{
+		rdtk_button_free(engine->button);
+		engine->button = nullptr;
+	}
+
+	return 1;
+}