lib/unigraphic/GraphicsDisplay.h

Mon, 11 Mar 2024 15:35:36 +0100

author
David Douard <david.douard@sdf3.org>
date
Mon, 11 Mar 2024 15:35:36 +0100
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1 /* mbed GraphicsDisplay Display Library Base Class
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2 * Copyright (c) 2007-2009 sford
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3 * Released under the MIT License: http://mbed.org/license/mit
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4 *
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5 * A library for providing a common base class for Graphics displays
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6 * To port a new display, derive from this class and implement
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7 * the constructor (setup the display), pixel (put a pixel
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8 * at a location), width and height functions. Everything else
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9 * (locate, printf, putc, cls, window, putp, fill, blit, blitbit)
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10 * will come for free. You can also provide a specialised implementation
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11 * of window and putp to speed up the results
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12 */
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13
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14 #ifndef MBED_GRAPHICSDISPLAY_H
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15 #define MBED_GRAPHICSDISPLAY_H
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16
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17 #include "TextDisplay.h"
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18 #include "Terminal6x8.h"
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19
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21
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22 /* some RGB color definitions */
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23 #define Black 0x0000 /* 0, 0, 0 */
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24 #define Navy 0x000F /* 0, 0, 128 */
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25 #define DarkGreen 0x03E0 /* 0, 128, 0 */
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26 #define DarkCyan 0x03EF /* 0, 128, 128 */
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27 #define Maroon 0x7800 /* 128, 0, 0 */
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28 #define Purple 0x780F /* 128, 0, 128 */
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29 #define Olive 0x7BE0 /* 128, 128, 0 */
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30 #define LightGrey 0xC618 /* 192, 192, 192 */
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31 #define DarkGrey 0x7BEF /* 128, 128, 128 */
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32 #define Blue 0x001F /* 0, 0, 255 */
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33 #define Green 0x07E0 /* 0, 255, 0 */
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34 #define Cyan 0x07FF /* 0, 255, 255 */
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35 #define Red 0xF800 /* 255, 0, 0 */
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36 #define Magenta 0xF81F /* 255, 0, 255 */
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37 #define Yellow 0xFFE0 /* 255, 255, 0 */
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38 #define White 0xFFFF /* 255, 255, 255 */
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39 #define Orange 0xFD20 /* 255, 165, 0 */
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40 #define GreenYellow 0xAFE5 /* 173, 255, 47 */
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41
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42 /** Bitmap
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43 */
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44 struct Bitmap_s{
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45 unsigned int xSize;
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46 unsigned int ySize;
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47 unsigned int Byte_in_Line;
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48 char* data;
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49 };
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50
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51 /** A common base class for Graphics displays
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52 */
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53 class GraphicsDisplay : public TextDisplay {
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54
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55 public:
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56
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57 /** Create a GraphicsDisplay interface
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58 * @param name The name used by the parent class to access the interface
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59 */
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60 GraphicsDisplay(const char* name);
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61
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62 ////// functions needing implementation in derived implementation class ///////////////////////////////////////
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63 ////// ---------------------------------------------------------------- ///////////////////////////////////////
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64
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65 /** Draw a pixel in the specified color.
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66 * @note this method must be supported in the derived class.
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67 * @param x is the horizontal offset to this pixel.
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68 * @param y is the vertical offset to this pixel.
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69 * @param color defines the color for the pixel.
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70 */
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71 virtual void pixel(int x, int y, unsigned short color) = 0;
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72
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73 /** Set the window, which controls where items are written to the screen.
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74 * When something hits the window width, it wraps back to the left side
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75 * and down a row. If the initial write is outside the window, it will
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76 * be captured into the window when it crosses a boundary.
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77 * @param x is the left edge in pixels.
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78 * @param y is the top edge in pixels.
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79 * @param w is the window width in pixels.
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80 * @param h is the window height in pixels.
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81 * @note this method must be overridden in a derived class.
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82 */
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83 virtual void window(int x, int y, int w, int h) = 0;
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84
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85 /** Push a single pixel into the window and increment position.
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86 * You may first call window() then push pixels in loop.
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87 * @param color is the pixel color.
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88 * @note this method must be overridden in a derived class.
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89 */
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90 virtual void window_pushpixel(unsigned short color) = 0;
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91
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92 /** Push some pixels of the same color into the window and increment position.
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93 * You must first call window() then push pixels.
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94 * @param color is the pixel color.
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95 * @param count: how many
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96 */
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97 virtual void window_pushpixel(unsigned short color, unsigned int count) = 0;
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98
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99 /** Push array of pixel colors into the window and increment position.
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100 * You must first call window() then push pixels.
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101 * @param color is the pixel color.
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102 */
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103 virtual void window_pushpixelbuf(unsigned short* color, unsigned int lenght) = 0;
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104
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105 /** If framebuffer is used, it needs to be sent to LCD from time to time
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106 @note this method must be overridden in a derived class.
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107 @note real function for LCD, dummy for TFT
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108 */
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109 virtual void copy_to_lcd() = 0;
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110
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111 /////// functions that come for free, but can be overwritten///////////////////////////////////////////////////
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112 /////// ----------------------------------------------------///////////////////////////////////////////////////
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113
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114 /** Set window to max possible size
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115 * May be overridden in a derived class.
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116 */
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117 virtual void WindowMax(void);
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118
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119 /** clear the entire screen
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120 * Basically it sets windomax then fill with background color
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121 * May be overridden in a derived class.
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122 */
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123 virtual void cls();
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124
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125 /** draw a circle
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126 *
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127 * @param x0,y0 center
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128 * @param r radius
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129 * @param color 16 bit color *
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130 *
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131 */
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132 virtual void circle(int x, int y, int r, unsigned short color);
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133
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134 /** draw a filled circle
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135 *
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136 * @param x0,y0 center
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137 * @param r radius
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138 * @param color 16 bit color *
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139 */
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140 virtual void fillcircle(int x, int y, int r, unsigned short color);
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141
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142
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143 /** draw a 1 pixel line
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144 *
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145 * @param x0,y0 start point
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146 * @param x1,y1 stop point
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147 * @param color 16 bit color
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148 *
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149 */
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150 virtual void line(int x0, int y0, int x1, int y1, unsigned short color);
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151
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152 /** draw a horizontal line
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153 *
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154 * @param x0 horizontal start
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155 * @param x1 horizontal stop
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156 * @param y vertical position
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157 * @param color 16 bit color
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158 *
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159 */
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160 void hline(int x0, int x1, int y, unsigned short color);
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161
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162 /** draw a vertical line
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163 *
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164 * @param x horizontal position
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165 * @param y0 vertical start
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166 * @param y1 vertical stop
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167 * @param color 16 bit color
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168 */
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169 void vline(int y0, int y1, int x, unsigned short color);
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170
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171 /** draw a rect
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172 *
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173 * @param x0,y0 top left corner
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174 * @param x1,y1 down right corner
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175 * @param color 16 bit color
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176 * *
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177 */
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178 virtual void rect(int x0, int y0, int x1, int y1, unsigned short color);
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179
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180 /** draw a filled rect
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181 *
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182 * @param x0,y0 top left corner
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183 * @param x1,y1 down right corner
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184 * @param color 16 bit color
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185 *
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186 */
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187 virtual void fillrect(int x0, int y0, int x1, int y1, unsigned short color);
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188
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189 /** setup cursor position for text
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190 *
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191 * @param x x-position (top left)
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192 * @param y y-position
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193 */
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194 virtual void locate(int x, int y);
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195
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196 /** put a char on the screen
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197 *
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198 * @param value char to print
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199 * @returns printed char
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200 *
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201 */
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202 virtual int _putc(int value);
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203
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204 /** draw a character on current position out of the active font to the TFT
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205 *
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206 * @param c char to print
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207 *
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208 */
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209 virtual void character(int c);
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210
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211 /** draw a character on given position out of the active font to the TFT
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212 *
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213 * @param x x-position of char (top left)
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214 * @param y y-position
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215 * @param c char to print
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216 *
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217 */
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218 virtual void character(int x, int y, int c);
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219
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220 /** return the actual width of a character out of the active font to the TFT
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221 *
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222 * @param c char to print
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223 * @param move_location wether to move current poisition or not
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224 *
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225 */
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226 virtual uint8_t char_width(char c, bool move_location=false);
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227
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228 /** paint a bitmap on the TFT
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229 *
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230 * @param x,y : upper left corner
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231 * @param w width of bitmap
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232 * @param h high of bitmap
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233 * @param *bitmap pointer to the bitmap data
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234 *
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235 * bitmap format: 16 bit R5 G6 B5
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236 *
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237 * use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5
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238 * use winhex to load this file and mark data stating at offset 0x46 to end
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239 * use edit -> copy block -> C Source to export C array
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240 * paste this array into your program
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241 *
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242 * define the array as static const unsigned char to put it into flash memory
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243 * cast the pointer to (unsigned char *) :
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244 * tft.Bitmap(10,40,309,50,(unsigned char *)scala);
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245 */
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246 void Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *bitmap);
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247
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248 /** paint monochrome bitmap to screen
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249 *
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250 * @param bm Bitmap in flash
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251 * @param x x start
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252 * @param y y start
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253 *
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254 */
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255 void Bitmap_BW(Bitmap_s bm, int x, int y);
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256
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257 /** paint a 16 bit BMP from filesytem on the TFT (slow)
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258 *
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259 * @param x,y : position of upper left corner
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260 * @param *Name_BMP name of the BMP file with drive: "/local/test.bmp"
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261 *
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262 * @returns 1 if bmp file was found and painted
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263 * @returns 0 if bmp file was found not found
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264 * @returns -1 if file is no bmp
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265 * @returns -2 if bmp file is no 16 bit bmp
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266 * @returns -3 if bmp file is to big for screen
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267 * @returns -4 if buffer malloc go wrong
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268 *
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269 * bitmap format: 16 bit R5 G6 B5
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270 *
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271 * use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5
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272 * copy to internal file system or SD card
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273 */
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274 int BMP_16(int x, int y, const char *Name_BMP);
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275
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276
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277
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278 /** select the font to use
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279 *
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280 * @param f pointer to font array
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281 * @param firstascii first ascii code present in font array, default 32 (space)
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282 * @param lastascii last ascii code present in font array, default 127 (DEL)
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283 * @param proportional enable/disable variable font width (default enabled)
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284 *
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285 * font array can created with GLCD Font Creator from http://www.mikroe.com
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286 * you have to add 4 parameter at the beginning of the font array to use:
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287 * - the number of byte / char (not used in this revision, set to whatever)
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288 * - the vertial size in pixel
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289 * - the horizontal size in pixel
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290 * - the number of byte per vertical line (not used in this revision, set to whatever)
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291 * you also have to change the array to cont unsigned char[] and __align(2)
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292 *
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293 */
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294 void set_font(unsigned char* f, unsigned char firstascii=32, unsigned char lastascii=127, bool proportional = true);
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295
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296 /** Zoom fount
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297 *
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298 * @param x_mul horizontal size multiplier
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299 * @param y_mul vertical size multiplier
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300 */
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301 void set_font_zoom(unsigned char x_mul, unsigned char y_mul);
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302
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303 /** Get the number of columns based on the currently active font.
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304 * @returns number of columns.
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305 * @note this method may be overridden in a derived class.
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306 */
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307 virtual int columns();
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308
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309 /** Get the number of rows based on the currently active font.
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310 * @returns number of rows.
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311 * @note this method may be overridden in a derived class.
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312 */
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313 virtual int rows();
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314
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315 /** get the current oriented screen width in pixels
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316 * @returns screen width in pixels.
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317 */
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318 int width();
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319
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320 /** get the current oriented screen height in pixels
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321 * @returns screen height in pixels.
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322 */
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323 int height();
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324
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325 /** set the current oriented screen width in pixels
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326 * @param width screen width in pixels.
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327 */
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328 void set_width(int width);
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329
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330 /** set the current oriented screen height in pixels
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331 * @param height screen height in pixels.
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332 */
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333 void set_height(int height);
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334
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335 /** setup auto update of screen
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336 *
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337 * @param up 1 = on , 0 = off
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338 * if switched off the program has to call copy_to_lcd()
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339 * to update screen from framebuffer
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340 */
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341 void set_auto_up(bool up);
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342
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343 /** get status of the auto update function
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344 *
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345 * @returns if auto update is on
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346 */
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347 bool get_auto_up(void);
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348
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349
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350
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351 private:
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352 unsigned char* font;
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353 // display width and height related to current orientation
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354 unsigned int oriented_width;
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355 unsigned int oriented_height;
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356
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357 // text char location
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358 unsigned int char_x;
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359 unsigned int char_y;
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360
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361 unsigned int fontoffset;// bytes / char (short)
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362 unsigned int fonthor; // hor size of font (char)
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363 unsigned int fontvert; // ver size of font (char)
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364 unsigned int fontbpl; // bytes per line (char)
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365 unsigned int fontzoomver; // size multiplier
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366 unsigned int fontzoomhor; // size multiplier
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367 unsigned char firstch; // first ascii code present in font array (usually 32)
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368 unsigned char lastch; // last ascii code present in font array (usually 127)
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369 bool auto_up; // autoupdate flag for LCD
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370 bool fontprop;
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371
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372
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373 };
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374
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375 #endif

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