1 files changed, 101 insertions, 0 deletions
diff --git a/dggui/pixelbuffer.h b/dggui/pixelbuffer.h
new file mode 100644
index 0000000..5c11d14
--- /dev/null
+++ b/dggui/pixelbuffer.h
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            pixelbuffer.h
+ *
+ *  Thu Nov 10 09:00:37 CET 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+#include "colour.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "guievent.h"
+
+namespace GUI
+{
+
+class PixelBuffer
+{
+public:
+	PixelBuffer(std::size_t width, std::size_t height);
+	~PixelBuffer();
+
+	void realloc(std::size_t width, std::size_t height);
+
+	void blendLine(std::size_t x, std::size_t y,
+	               const std::uint8_t* line, std::size_t len);
+
+	Rect updateBuffer(std::vector<class PixelBufferAlpha*>& pixel_buffers);
+
+	std::vector<std::uint8_t> buf_data;
+	std::uint8_t* buf{nullptr};
+	std::size_t width{0};
+	std::size_t height{0};
+};
+
+class PixelBufferAlpha
+{
+public:
+	PixelBufferAlpha() = default;
+	PixelBufferAlpha(std::size_t width, std::size_t height);
+	~PixelBufferAlpha();
+
+	void realloc(std::size_t width, std::size_t height);
+
+	void clear();
+
+	void setPixel(std::size_t x, std::size_t y, const Colour& c);
+
+	void writeLine(std::size_t x, std::size_t y,
+	               const std::uint8_t* line, std::size_t len);
+	void blendLine(std::size_t x, std::size_t y,
+	               const std::uint8_t* line, std::size_t len);
+
+	void addPixel(std::size_t x, std::size_t y, const Colour& c);
+
+	const Colour& pixel(std::size_t x, std::size_t y) const;
+
+	const std::uint8_t* getLine(std::size_t x, std::size_t y) const;
+
+	std::vector<std::uint8_t> buf_data;
+	std::uint8_t* buf{nullptr};
+	std::size_t width{0};
+	std::size_t height{0};
+	int x{0};
+	int y{0};
+	bool dirty{true};
+	bool visible{true};
+
+	// Add optional dirty rect that this pixelbuffer took up since it was last
+	// rendered. Make sure to update this list on resize and/or move.
+	std::size_t last_width{0};
+	std::size_t last_height{0};
+	int last_x{0};
+	int last_y{0};
+	bool has_last{false};
+};
+
+} // GUI::