Blitter: Add method to draw rectangle at x, y offset

src/blitter/32bpp_anim.cpp

@@ -508,6 +508,11 @@ void Blitter_32bppAnim::DrawRect(void *video, int width, int height, uint8 colou
 	} while (--height);
 }
 
+void Blitter_32bppAnim::DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour)
+{
+	this->Blitter_32bppAnim::DrawRect((Colour *)video + x + y * _screen.pitch, width, height, colour);
+}
+
 void Blitter_32bppAnim::CopyFromBuffer(void *video, const void *src, int width, int height)
 {
 	assert(!_screen_disable_anim);

src/blitter/32bpp_anim.hpp

@@ -43,6 +43,7 @@ public:
 	void SetRect(void *video, int x, int y, const uint8 *colours, uint lines, uint width, uint pitch) override;
 	void SetRect32(void *video, int x, int y, const uint32 *colours, uint lines, uint width, uint pitch) override;
 	void DrawRect(void *video, int width, int height, uint8 colour) override;
+	void DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour) override;
 	void CopyFromBuffer(void *video, const void *src, int width, int height) override;
 	void CopyToBuffer(const void *video, void *dst, int width, int height) override;
 	void ScrollBuffer(void *video, int left, int top, int width, int height, int scroll_x, int scroll_y) override;

src/blitter/32bpp_base.cpp

@@ -75,6 +75,11 @@ void Blitter_32bppBase::DrawRect(void *video, int width, int height, uint8 colou
 	} while (--height);
 }
 
+void Blitter_32bppBase::DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour)
+{
+	this->Blitter_32bppBase::DrawRect((Colour *)video + x + y * _screen.pitch, width, height, colour);
+}
+
 void Blitter_32bppBase::CopyFromBuffer(void *video, const void *src, int width, int height)
 {
 	uint32 *dst = (uint32 *)video;

src/blitter/32bpp_base.hpp

@@ -26,6 +26,7 @@ public:
 	void SetRect(void *video, int x, int y, const uint8 *colours, uint lines, uint width, uint pitch) override;
 	void SetRect32(void *video, int x, int y, const uint32 *colours, uint lines, uint width, uint pitch) override;
 	void DrawRect(void *video, int width, int height, uint8 colour) override;
+	void DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour) override;
 	void CopyFromBuffer(void *video, const void *src, int width, int height) override;
 	void CopyToBuffer(const void *video, void *dst, int width, int height) override;
 	void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) override;

src/blitter/40bpp_anim.cpp

@@ -109,6 +109,11 @@ void Blitter_40bppAnim::DrawRect(void *video, int width, int height, uint8 colou
 	} while (--height);
 }
 
+void Blitter_40bppAnim::DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour)
+{
+	this->Blitter_40bppAnim::DrawRect((Colour *)video + x + y * _screen.pitch, width, height, colour);
+}
+
 void Blitter_40bppAnim::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash)
 {
 	if (_screen_disable_anim) {

src/blitter/40bpp_anim.hpp

@@ -24,6 +24,7 @@ public:
 	void SetRect(void *video, int x, int y, const uint8 *colours, uint lines, uint width, uint pitch) override;
 	void SetRect32(void *video, int x, int y, const uint32 *colours, uint lines, uint width, uint pitch) override;
 	void DrawRect(void *video, int width, int height, uint8 colour) override;
+	void DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour) override;
 	void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) override;
 	void CopyFromBuffer(void *video, const void *src, int width, int height) override;
 	void CopyToBuffer(const void *video, void *dst, int width, int height) override;

src/blitter/8bpp_base.cpp

@@ -64,6 +64,11 @@ void Blitter_8bppBase::DrawRect(void *video, int width, int height, uint8 colour
 	} while (--height);
 }
 
+void Blitter_8bppBase::DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour)
+{
+	this->Blitter_8bppBase::DrawRect((uint8 *)video + x + y * _screen.pitch, width, height, colour);
+}
+
 void Blitter_8bppBase::CopyFromBuffer(void *video, const void *src, int width, int height)
 {
 	uint8 *dst = (uint8 *)video;

src/blitter/8bpp_base.hpp

@@ -23,6 +23,7 @@ public:
 	void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) override;
 	void SetRect(void *video, int x, int y, const uint8 *colours, uint lines, uint width, uint pitch) override;
 	void DrawRect(void *video, int width, int height, uint8 colour) override;
+	void DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour) override;
 	void CopyFromBuffer(void *video, const void *src, int width, int height) override;
 	void CopyToBuffer(const void *video, void *dst, int width, int height) override;
 	void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) override;

src/blitter/base.hpp

@@ -161,6 +161,17 @@ public:
 	 */
 	virtual void DrawRect(void *video, int width, int height, uint8 colour) = 0;
 
+	/**
+	 * Make a single horizontal line in a single colour on the video-buffer.
+	 * @param video The destination pointer (video-buffer).
+	 * @param x The x position within video-buffer.
+	 * @param y The y position within video-buffer.
+	 * @param width The length of the line.
+	 * @param height The height of the line.
+	 * @param colour A 8bpp mapping colour.
+	 */
+	virtual void DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour) = 0;
+
 	/**
 	 * Draw a line with a given colour.
 	 * @param video The destination pointer (video-buffer).

src/blitter/null.hpp

@@ -23,6 +23,7 @@ public:
 	void SetPixel(void *video, int x, int y, uint8 colour) override {};
 	void SetPixel32(void *video, int x, int y, uint8 colour, uint32 colour32) override {};
 	void DrawRect(void *video, int width, int height, uint8 colour) override {};
+	void DrawRectAt(void *video, int x, int y, int width, int height, uint8 colour) override {};
 	void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) override {};
 	void SetRect(void *video, int x, int y, const uint8 *colours, uint lines, uint width, uint pitch) override {};
 	void SetRect32(void *video, int x, int y, const uint32 *colours, uint lines, uint width, uint pitch) override {};