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engines/ultima/shared/gfx/bitmap.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ultima/shared/gfx/bitmap.h"
+#include "ultima/shared/core/file.h"
+#include "common/memstream.h"
+#include "graphics/managed_surface.h"
+
+namespace Ultima {
+namespace Shared {
+namespace Gfx {
+
+void Bitmap::load(const Common::Path &filename) {
+	File srcFile(filename);
+	Common::MemoryWriteStreamDynamic decompressedFile(DisposeAfterUse::YES);
+	decompress(&srcFile, &decompressedFile);
+
+	// Set the bitmap size
+	Common::MemoryReadStream f(decompressedFile.getData(), decompressedFile.size());
+	int16 xs = f.readSint16LE();
+	int16 ys = f.readSint16LE();
+	create(xs, ys);
+	assert(f.size() == (xs * ys + 4));
+
+	Graphics::Surface s = getSubArea(Common::Rect(0, 0, xs, ys));
+
+	// Read in the lines
+	for (int y = 0; y < ys; ++y) {
+		byte *dest = (byte *)s.getBasePtr(0, y);
+		f.read(dest, xs);
+	}
+}
+
+void Bitmap::flipHorizontally() {
+	Graphics::Surface s = getSubArea(Common::Rect(0, 0, this->w, this->h));
+
+	for (int y = 0; y < h; ++y) {
+		byte *lineStart = (byte *)s.getBasePtr(0, y);
+		byte *lineEnd = (byte *)s.getBasePtr(this->w - 1, y);
+
+		for (int x = 0; x < (this->w - 1) / 2; ++x, ++lineStart, --lineEnd)
+			SWAP(*lineStart, *lineEnd);
+	}
+}
+
+} // End of namespace Gfx
+} // End of namespace Shared
+} // End of namespace Ultima