Diff: u8g_bitmap.c

Revision:

0:972874f31c98

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/u8g_bitmap.c	Wed Mar 07 12:49:14 2018 +0000
@@ -0,0 +1,178 @@
+/*
+
+  u8g_bitmap.c
+
+  Universal 8bit Graphics Library
+  
+  Copyright (c) 2011, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+
+*/
+
+#include "u8g.h"
+
+void u8g_DrawHBitmap(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, const uint8_t *bitmap)
+{
+  while( cnt > 0 )
+  {
+    u8g_Draw8Pixel(u8g, x, y, 0, *bitmap);
+    bitmap++;
+    cnt--;
+    x+=8;
+  }
+}
+
+void u8g_DrawBitmap(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, u8g_uint_t h, const uint8_t *bitmap)
+{
+  if ( u8g_IsBBXIntersection(u8g, x, y, cnt*8, h) == 0 )
+    return;
+  while( h > 0 )
+  {
+    u8g_DrawHBitmap(u8g, x, y, cnt, bitmap);
+    bitmap += cnt;
+    y++;
+    h--;
+  }
+}
+
+
+void u8g_DrawHBitmapP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, const u8g_pgm_uint8_t *bitmap)
+{
+  while( cnt > 0 )
+  {
+    u8g_Draw8Pixel(u8g, x, y, 0, u8g_pgm_read(bitmap));
+    bitmap++;
+    cnt--;
+    x+=8;
+  }
+}
+
+void u8g_DrawBitmapP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, u8g_uint_t h, const u8g_pgm_uint8_t *bitmap)
+{
+  if ( u8g_IsBBXIntersection(u8g, x, y, cnt*8, h) == 0 )
+    return;
+  while( h > 0 )
+  {
+    u8g_DrawHBitmapP(u8g, x, y, cnt, bitmap);
+    bitmap += cnt;
+    y++;
+    h--;
+  }
+}
+
+/*=========================================================================*/
+
+static void u8g_DrawHXBM(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, const uint8_t *bitmap)
+{
+  uint8_t d;
+  x+=7;
+  while( w >= 8 )
+  {
+    u8g_Draw8Pixel(u8g, x, y, 2, *bitmap);
+    bitmap++;
+    w-= 8;
+    x+=8;
+  }
+  if ( w > 0 )
+  {
+    d = *bitmap;
+    x -= 7;
+    do
+    {
+      if ( d & 1 )
+        u8g_DrawPixel(u8g, x, y);
+      x++;
+      w--;
+      d >>= 1;      
+    } while ( w > 0 );
+  }
+}
+
+void u8g_DrawXBM(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h, const uint8_t *bitmap)
+{
+  u8g_uint_t b;
+  b = w;
+  b += 7;
+  b >>= 3;
+  
+  if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
+    return;
+  
+  while( h > 0 )
+  {
+    u8g_DrawHXBM(u8g, x, y, w, bitmap);
+    bitmap += b;
+    y++;
+    h--;
+  }
+}
+
+static void u8g_DrawHXBMP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, const u8g_pgm_uint8_t *bitmap)
+{
+  uint8_t d;
+  x+=7;
+  while( w >= 8 )
+  {
+    u8g_Draw8Pixel(u8g, x, y, 2, u8g_pgm_read(bitmap));
+    bitmap++;
+    w-= 8;
+    x+=8;
+  }
+  if ( w > 0 )
+  {
+    d = u8g_pgm_read(bitmap);
+    x -= 7;
+    do
+    {
+      if ( d & 1 )
+        u8g_DrawPixel(u8g, x, y);
+      x++;
+      w--;
+      d >>= 1;      
+    } while ( w > 0 );
+  }
+}
+
+void u8g_DrawXBMP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h, const u8g_pgm_uint8_t *bitmap)
+{
+  u8g_uint_t b;
+  b = w;
+  b += 7;
+  b >>= 3;
+  
+  if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
+    return;
+  while( h > 0 )
+  {
+    u8g_DrawHXBMP(u8g, x, y, w, bitmap);
+    bitmap += b;
+    y++;
+    h--;
+  }
+}
+