Diff: LCD_ST7735/Bitmap1bpp.cpp

Revision:

0:bc3f11b1b41f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LCD_ST7735/Bitmap1bpp.cpp	Sun Feb 08 01:58:57 2015 +0000
@@ -0,0 +1,61 @@
+#include "mbed.h"
+#include "Bitmap1bpp.h"
+
+Bitmap1bpp::Bitmap1bpp(uint16_t width, uint16_t height):
+    _width(width), 
+    _height(height),
+    _stride((width >> 3) + ((width & 0x07) ? 1 : 0)),
+    _pBitmapData(new uint8_t[_stride * height])
+{
+    
+}
+
+Bitmap1bpp::~Bitmap1bpp()
+{
+    if (_pBitmapData != NULL)
+    {
+        delete []_pBitmapData;
+        _pBitmapData = NULL;
+    }
+}
+
+void Bitmap1bpp::clear()
+{
+    memset(_pBitmapData, 0, _stride * _height);
+}
+
+void Bitmap1bpp::setPixel(int16_t x, int16_t y, uint16_t color)
+{
+    if (x < 0 || x >= _width || y < 0 || y >= _height) return;
+    
+    uint8_t mask = 1 << (7 - (x % 8));
+    uint8_t *p = _pBitmapData + ((y * _stride) + (x / 8));
+    
+    if (color) *p |= mask; else *p &= ~mask;
+}
+
+uint16_t Bitmap1bpp::getPixel(int16_t x, int16_t y)
+{
+    if (x < 0 || x >= _width || y < 0 || y >= _height) return 0;
+    
+    uint8_t mask = 1 << (7 - (x % 8));
+    uint8_t *p = _pBitmapData + ((y * _stride) + (x / 8));
+    
+    return (*p & mask) == mask ? 1 : 0;    
+}
+
+void Bitmap1bpp::fastHLine(int16_t x1, int16_t x2, int16_t y, uint16_t color)
+{
+    for (int x = x1; x <= x2; ++x)
+    {
+        setPixel(x, y, color);
+    }    
+}
+
+void Bitmap1bpp::fastVLine(int16_t y1, int16_t y2, int16_t x, uint16_t color)
+{
+    for (int y = y1; y <= y2; ++y)
+    {
+        setPixel(x, y, color);
+    }
+}
\ No newline at end of file