Added some graphic primitives

svn-id: r15885

graphics/module.mk

@@ -3,8 +3,9 @@ MODULE := graphics
 MODULE_OBJS := \
 	graphics/animation.o \
 	graphics/font.o \
+	graphics/newfont.o \
 	graphics/scummfont.o \
-	graphics/newfont.o
+	graphics/surface.o
 
 MODULE_DIRS += \
 	graphics

graphics/surface.cpp

@@ -0,0 +1,124 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2004 The ScummVM project
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ */
+
+#include "common/stdafx.h"
+#include "common/util.h"
+#include "graphics/surface.h"
+
+namespace Graphics {
+
+void Surface::hLine(int x, int y, int x2, uint32 color) const {
+	// Clipping
+	if (y < 0 || y >= h)
+		return;
+
+	if (x2 < x)
+		SWAP(x2, x);
+	
+	if (x < 0)
+		x = 0;
+	if (x2 >= w)
+		x2 = w - 1;
+	
+	if (bytesPerPixel == 1) {
+		byte *ptr = (byte *)getBasePtr(x, y);
+		while (x++ <= x2) {
+			*ptr++ = (byte)color;
+		}
+	} else if (bytesPerPixel == 2) {
+		uint16 *ptr = (uint16 *)getBasePtr(x, y);
+		while (x++ <= x2) {
+			*ptr++ = (uint16)color;
+		}
+	} else {
+		error("Surface::hLine: bytesPerPixel must be 1 or 2");
+	}
+}
+
+void Surface::vLine(int x, int y, int y2, uint32 color) const {
+	// Clipping
+	if (x < 0 || x >= w)
+		return;
+
+	if (y2 < y)
+		SWAP(y2, y);
+	
+	if (y < 0)
+		y = 0;
+	if (y2 >= h)
+		y2 = h - 1;
+	
+	if (bytesPerPixel == 1) {
+		byte *ptr = (byte *)getBasePtr(x, y);
+		while (y++ <= y2) {
+			*ptr = (byte)color;
+			ptr += pitch;
+		}
+	} else if (bytesPerPixel == 2) {
+		uint16 *ptr = (uint16 *)getBasePtr(x, y);
+		while (y++ <= y2) {
+			*ptr = (uint16)color;
+			ptr += pitch/2;
+		}
+	} else {
+		error("Surface::vLine: bytesPerPixel must be 1 or 2");
+	}
+}
+
+void Surface::fillRect(const Common::Rect &rOld, uint32 color) const {
+	Common::Rect r(rOld);
+	r.clip(w, h);
+	
+	if (!r.isValidRect())
+		return;
+
+	int width = r.width();
+	int height = r.height();
+	int i;
+
+	if (bytesPerPixel == 1) {
+		byte *ptr = (byte *)getBasePtr(r.left, r.top);
+		while (height--) {
+			for (i = 0; i < width; i++) {
+				ptr[i] = (byte)color;
+			}
+			ptr += pitch;
+		}
+	} else if (bytesPerPixel == 2) {
+		uint16 *ptr = (uint16 *)getBasePtr(r.left, r.top);
+		while (height--) {
+			for (i = 0; i < width; i++) {
+				ptr[i] = (uint16)color;
+			}
+			ptr += pitch/2;
+		}
+	} else {
+		error("Surface::vLine: bytesPerPixel must be 1 or 2");
+	}
+}
+
+void Surface::frameRect(const Common::Rect &r, uint32 color) const {
+	hLine(r.left, r.top, r.right-1, color);
+	hLine(r.left, r.bottom-1, r.right-1, color);
+	vLine(r.left, r.top, r.bottom-1, color);
+	vLine(r.right-1, r.top, r.bottom-1, color);
+}
+
+} // End of namespace Graphics

graphics/surface.h

@@ -22,6 +22,7 @@
 #define GRAPHICS_SURFACE_H
 
 #include "common/scummsys.h"
+#include "common/rect.h"
 
 namespace Graphics {
 
@@ -37,6 +38,15 @@ struct Surface {
 	uint16 pitch;
 	uint8 bytesPerPixel;
 	Surface() : pixels(0), w(0), h(0), pitch(0), bytesPerPixel(0) {}
+
+	inline void *getBasePtr(int x, int y) const {
+		return (void *)((byte *)pixels + y * pitch + x * bytesPerPixel);
+	}
+	
+	void hLine(int x, int y, int x2, uint32 color) const;
+	void vLine(int x, int y, int y2, uint32 color) const;
+	void fillRect(const Common::Rect &r, uint32 color) const;
+	void frameRect(const Common::Rect &r, uint32 color) const;
 };