add 2in13b_V4 code

Arduino/epd2in13b_V4/epdpaint.h

@@ -0,0 +1,75 @@
+/**
+ *  @filename   :   epdpaint.h
+ *  @brief      :   Header file for epdpaint.cpp
+ *  @author     :   Yehui from Waveshare
+ *  
+ *  Copyright (C) Waveshare     July 28 2017
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documnetation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to  whom the Software is
+ * furished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef EPDPAINT_H
+#define EPDPAINT_H
+
+// Display orientation
+#define ROTATE_0            0
+#define ROTATE_90           1
+#define ROTATE_180          2
+#define ROTATE_270          3
+
+// Color inverse. 1 or 0 = set or reset a bit if set a colored pixel
+#define IF_INVERT_COLOR     1
+
+#include "fonts.h"
+
+class Paint {
+public:
+    Paint(unsigned char* image, int width, int height);
+    ~Paint();
+    void Clear(int colored);
+    int  GetWidth(void);
+    void SetWidth(int width);
+    int  GetHeight(void);
+    void SetHeight(int height);
+    int  GetRotate(void);
+    void SetRotate(int rotate);
+    unsigned char* GetImage(void);
+    void DrawAbsolutePixel(int x, int y, int colored);
+    void DrawPixel(int x, int y, int colored);
+    void DrawCharAt(int x, int y, char ascii_char, sFONT* font, int colored);
+    void DrawStringAt(int x, int y, const char* text, sFONT* font, int colored);
+    void DrawLine(int x0, int y0, int x1, int y1, int colored);
+    void DrawHorizontalLine(int x, int y, int width, int colored);
+    void DrawVerticalLine(int x, int y, int height, int colored);
+    void DrawRectangle(int x0, int y0, int x1, int y1, int colored);
+    void DrawFilledRectangle(int x0, int y0, int x1, int y1, int colored);
+    void DrawCircle(int x, int y, int radius, int colored);
+    void DrawFilledCircle(int x, int y, int radius, int colored);
+
+private:
+    unsigned char* image;
+    int width;
+    int height;
+    int rotate;
+};
+
+#endif
+
+/* END OF FILE */
+