(svn r22288) -Codechange: Deduplicate Blitter_8bppBase::DrawLine() and Blitter_32bppBase::DrawLine() into Blitter::DrawLine().

6 files changed, 75 insertions, 114 deletions

diff --git a/src/blitter/32bpp_base.cpp b/src/blitter/32bpp_base.cpp
index 23b42fa63..0499f5712 100644
--- a/src/blitter/32bpp_base.cpp
+++ b/src/blitter/32bpp_base.cpp
@@ -36,56 +36,6 @@ void Blitter_32bppBase::DrawRect(void *video, int width, int height, uint8 colou
 	} while (--height);
 }
 
-void Blitter_32bppBase::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour)
-{
-	int dy;
-	int dx;
-	int stepx;
-	int stepy;
-	int frac;
-
-	dy = (y2 - y) * 2;
-	if (dy < 0) {
-		dy = -dy;
-		stepy = -1;
-	} else {
-		stepy = 1;
-	}
-
-	dx = (x2 - x) * 2;
-	if (dx < 0) {
-		dx = -dx;
-		stepx = -1;
-	} else {
-		stepx = 1;
-	}
-
-	if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
-	if (dx > dy) {
-		frac = dy - (dx / 2);
-		while (x != x2) {
-			if (frac >= 0) {
-				y += stepy;
-				frac -= dx;
-			}
-			x += stepx;
-			frac += dy;
-			if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
-		}
-	} else {
-		frac = dx - (dy / 2);
-		while (y != y2) {
-			if (frac >= 0) {
-				x += stepx;
-				frac -= dy;
-			}
-			y += stepy;
-			frac += dx;
-			if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
-		}
-	}
-}
-
 void Blitter_32bppBase::CopyFromBuffer(void *video, const void *src, int width, int height)
 {
 	uint32 *dst = (uint32 *)video;
diff --git a/src/blitter/32bpp_base.hpp b/src/blitter/32bpp_base.hpp
index 79d097e80..8312b00a5 100644
--- a/src/blitter/32bpp_base.hpp
+++ b/src/blitter/32bpp_base.hpp
@@ -25,7 +25,6 @@ public:
 	/* virtual */ void *MoveTo(const void *video, int x, int y);
 	/* virtual */ void SetPixel(void *video, int x, int y, uint8 colour);
 	/* virtual */ void DrawRect(void *video, int width, int height, uint8 colour);
-	/* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour);
 	/* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height);
 	/* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height);
 	/* virtual */ void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch);
diff --git a/src/blitter/8bpp_base.cpp b/src/blitter/8bpp_base.cpp
index 423b0604e..6371e3a8d 100644
--- a/src/blitter/8bpp_base.cpp
+++ b/src/blitter/8bpp_base.cpp
@@ -41,56 +41,6 @@ void Blitter_8bppBase::DrawRect(void *video, int width, int height, uint8 colour
 	} while (--height);
 }
 
-void Blitter_8bppBase::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour)
-{
-	int dy;
-	int dx;
-	int stepx;
-	int stepy;
-	int frac;
-
-	dy = (y2 - y) * 2;
-	if (dy < 0) {
-		dy = -dy;
-		stepy = -1;
-	} else {
-		stepy = 1;
-	}
-
-	dx = (x2 - x) * 2;
-	if (dx < 0) {
-		dx = -dx;
-		stepx = -1;
-	} else {
-		stepx = 1;
-	}
-
-	if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
-	if (dx > dy) {
-		frac = dy - (dx / 2);
-		while (x != x2) {
-			if (frac >= 0) {
-				y += stepy;
-				frac -= dx;
-			}
-			x += stepx;
-			frac += dy;
-			if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
-		}
-	} else {
-		frac = dx - (dy / 2);
-		while (y != y2) {
-			if (frac >= 0) {
-				x += stepx;
-				frac -= dy;
-			}
-			y += stepy;
-			frac += dx;
-			if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
-		}
-	}
-}
-
 void Blitter_8bppBase::CopyFromBuffer(void *video, const void *src, int width, int height)
 {
 	uint8 *dst = (uint8 *)video;
diff --git a/src/blitter/8bpp_base.hpp b/src/blitter/8bpp_base.hpp
index 926d61739..c1e484679 100644
--- a/src/blitter/8bpp_base.hpp
+++ b/src/blitter/8bpp_base.hpp
@@ -23,7 +23,6 @@ public:
 	/* virtual */ void *MoveTo(const void *video, int x, int y);
 	/* virtual */ void SetPixel(void *video, int x, int y, uint8 colour);
 	/* virtual */ void DrawRect(void *video, int width, int height, uint8 colour);
-	/* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour);
 	/* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height);
 	/* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height);
 	/* virtual */ void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch);
diff --git a/src/blitter/base.cpp b/src/blitter/base.cpp
new file mode 100644
index 000000000..b18e9c87a
--- /dev/null
+++ b/src/blitter/base.cpp
@@ -0,0 +1,74 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD 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, version 2.
+ * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file base.cpp Implementation of the base for all blitters. */
+
+#include "../stdafx.h"
+#include "base.hpp"
+
+/**
+ * Draw a line with a given colour.
+ * @param video The destination pointer (video-buffer).
+ * @param x The x coordinate from where the line starts.
+ * @param y The y coordinate from where the line starts.
+ * @param x2 The x coordinate to where the line goes.
+ * @param y2 The y coordinate to where the lines goes.
+ * @param screen_width The width of the screen you are drawing in (to avoid buffer-overflows).
+ * @param screen_height The height of the screen you are drawing in (to avoid buffer-overflows).
+ * @param colour A 8bpp mapping colour.
+ */
+void Blitter::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour)
+{
+	int dy;
+	int dx;
+	int stepx;
+	int stepy;
+	int frac;
+
+	dy = (y2 - y) * 2;
+	if (dy < 0) {
+		dy = -dy;
+		stepy = -1;
+	} else {
+		stepy = 1;
+	}
+
+	dx = (x2 - x) * 2;
+	if (dx < 0) {
+		dx = -dx;
+		stepx = -1;
+	} else {
+		stepx = 1;
+	}
+
+	if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
+	if (dx > dy) {
+		frac = dy - (dx / 2);
+		while (x != x2) {
+			if (frac >= 0) {
+				y += stepy;
+				frac -= dx;
+			}
+			x += stepx;
+			frac += dy;
+			if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
+		}
+	} else {
+		frac = dx - (dy / 2);
+		while (y != y2) {
+			if (frac >= 0) {
+				x += stepx;
+				frac -= dy;
+			}
+			y += stepy;
+			frac += dx;
+			if (x >= 0 && y >= 0 && x < screen_width && y < screen_height) this->SetPixel(video, x, y, colour);
+		}
+	}
+}
diff --git a/src/blitter/base.hpp b/src/blitter/base.hpp
index 03898582c..3af376a15 100644
--- a/src/blitter/base.hpp
+++ b/src/blitter/base.hpp
@@ -101,18 +101,7 @@ public:
 	 */
 	virtual void DrawRect(void *video, int width, int height, uint8 colour) = 0;
 
-	/**
-	 * Draw a line with a given colour.
-	 * @param video The destination pointer (video-buffer).
-	 * @param x The x coordinate from where the line starts.
-	 * @param y The y coordinate from where the line starts.
-	 * @param x2 The x coordinate to where the line goes.
-	 * @param y2 The y coordinate to where the lines goes.
-	 * @param screen_width The width of the screen you are drawing in (to avoid buffer-overflows).
-	 * @param screen_height The height of the screen you are drawing in (to avoid buffer-overflows).
-	 * @param colour A 8bpp mapping colour.
-	 */
-	virtual void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour) = 0;
+	void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour);
 
 	/**
 	 * Copy from a buffer to the screen.