Initial commit

engines/m4/graphics/gr_draw.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 "m4/graphics/gr_draw.h"
+#include "m4/graphics/gr_line.h"
+#include "m4/graphics/gr_pal.h"
+
+namespace M4 {
+
+void buffer_put_pixel(Buffer *buf, int32 x, int32 y, byte c) {
+	*(buf->data + x + (y * buf->stride)) = (uint8)c;
+}
+
+byte buffer_get_pixel(Buffer *buf, int32 x, int32 y) {
+	return *(buf->data + x + (y * buf->stride));
+}
+
+void buffer_draw_box(Buffer *buf, int32 x1, int32 y1, int32 x2, int32 y2, byte color) {
+	gr_color_set(color);
+	gr_hline(buf, x1, x2, y1);
+	gr_hline(buf, x1, x2, y2);
+	gr_vline(buf, x1, y1, y2);
+	gr_vline(buf, x2, y1, y2);
+}
+
+void buffer_draw_box_xor(Buffer *buf, int32 x1, int32 y1, int32 x2, int32 y2) {
+	gr_hline_xor(buf, x1, x2, y1);
+	gr_hline_xor(buf, x1, x2, y2);
+	gr_vline_xor(buf, x1, y1 + 1, y2 - 1);
+	gr_vline_xor(buf, x2, y1 + 1, y2 - 1);
+}
+
+int32 buffer_fill(Buffer *target, byte value) {
+	if (!target)
+		return false;
+	if (!target->data)
+		return false;
+
+	memset(target->data, value, target->stride * target->h);
+	return true;
+}
+
+} // namespace M4