Add button messages and handling

[metawatch.git] / mw_utility.c

diff --git a/mw_utility.c b/mw_utility.c
index 119207b13a1d0a7a1ab588b8160a6375b93aa50a..baf3d0a07d94eb30da3adfc5776403674e77a12e 100644 (file)
--- a/mw_utility.c
+++ b/mw_utility.c
@@ -1,7 +1,20 @@
 /*
  * (c) 2011 Siegen, Germany by Nils Faerber <nils.faerber@kernelconcepts.de>
  *
- * license LGPL
+ * This library 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 2 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
  */
 
 #include <stdlib.h>
@@ -11,6 +24,8 @@
 #include "mw_utility.h"
 #include "metawatch.h"
 
+#include "fonts.h"
+
 /*
  * The pixmap buffer has at least one byte per pixel, even for monochrome (bpp=1)
  * bitmaps
@@ -48,6 +63,31 @@ void mw_free_pbuffer(mw_buffer *mwbuf)
        free(mwbuf);
 }
 
+/*
+ * makes a buffer for sending to the watch from the drawing buffer, e.g.
+ * mw_send_bitmap(mw_fd, MW_SCREEN_MODE_IDLE, 96, 65, 31, bbuf, len);
+ */
+unsigned char *mw_make_mw_buffer(mw_buffer *mwbuf, int *buflen)
+{
+       static unsigned char wbuf[96*12];
+       int x, y;
+       unsigned char clr;
+
+       memset(wbuf, 0, 96*12);
+
+       for (y = 0; y < mwbuf->res_y; y++) {
+               for (x = 0; x < mwbuf->res_x; x++) {
+                       clr = *(unsigned char *)(mwbuf->pbuf+((y*mwbuf->res_x)+x));
+                       if (clr) {
+                               *(unsigned char *)(wbuf+((y*12)+(x/8))) |= 1 << (x%8);
+                       };
+               };
+       };
+       *buflen = mwbuf->res_y * 12;
+
+       return wbuf;
+}
+
 void mw_dump_mw_buffer(mw_buffer *mwbuf)
 {
        int x, y;
@@ -73,6 +113,8 @@ void mw_buf_clear(mw_buffer *mwbuf, mw_color clr)
 
        if (!mwbuf)
                return;
+       if (clr == MW_TRANSPARENT)
+               return;
 
        pbuf_size = mwbuf->res_x * mwbuf->res_y * ((mwbuf->bpp / 8) + 1);
        memset(mwbuf->pbuf, clr, pbuf_size);
@@ -83,8 +125,107 @@ void mw_buf_draw_pixel(mw_buffer *mwbuf, unsigned int x, unsigned int y, mw_colo
 {
        if (!mwbuf)
                return;
+       if (clr == MW_TRANSPARENT)
+               return;
 
        *(unsigned char *)(mwbuf->pbuf+((y*mwbuf->res_x)+x)) = clr;
 }
 
+void mw_buf_print(mw_buffer *mwbuf, unsigned int x, unsigned int y, char *text, unsigned char fsize, mw_color fgclr, mw_color bgclr)
+{
+       unsigned int  i,j,z;
+       const unsigned char *data, *font_style;
+       unsigned char mask,xme,yme,offset;
+
+       if (text==NULL || strlen(text) == 0)
+               return;
+
+       switch (fsize) {
+               case 0:
+                       data = (const unsigned char *)FONT6x8;
+                       font_style = (const unsigned char *)FONT6x8;
+                       break;
+               case 1:
+                       data = (const unsigned char *)FONT8x8F;
+                       font_style = (const unsigned char *)FONT8x8F;
+                       break;
+               case 2:
+                       data = (const unsigned char *)FONT8x16;
+                       font_style = (const unsigned char *)FONT8x16;
+                       break;
+               default:
+                       data = (const unsigned char *)FONT6x8;
+                       font_style = (const unsigned char *)FONT6x8;
+                       break;
+       };
+       xme = *data++;
+       yme = *data++;
+       offset = *data;
+
+       do {
+               mask = 0x00;
+               data =  (font_style + offset) + (offset * (int)(*text - 32));
+               for (i=0; i < yme; i++) {
+                       mask |=0x80;
+                       for (j=x; j < (x + xme); j++) {
+                               z = y + i;
+                               if ((z < mwbuf->res_y) && (j < mwbuf->res_x)) {
+                                       if (*data & mask) {
+                                               mw_buf_draw_pixel(mwbuf, j, z, fgclr);
+                                       } else {
+                                               mw_buf_draw_pixel(mwbuf, j, z, bgclr);
+                                       }
+                               }
+                               mask >>= 1;
+                       }
+                       data++;
+               }
+               x += xme;
+               text++;
+       } while (*text != '\0');
+}
+
+void mw_buf_draw_line_bresenham(mw_buffer *mwbuf, unsigned int xstart, unsigned int ystart, unsigned int xend, unsigned int yend, mw_color clr)
+{
+       int x, y, t, dx, dy, incx, incy, pdx, pdy, ddx, ddy, es, el, err;
+ 
+       dx = xend - xstart;
+       dy = yend - ystart;
+ 
+       incx = (dx >= 0) ? 1 : -1;
+       incy = (dy >= 0) ? 1 : -1;
+
+       if (dx<0)
+               dx = -dx;
+       if (dy<0)
+               dy = -dy;
+ 
+       if (dx>dy) {
+               pdx = incx; pdy = 0;
+               ddx=incx; ddy=incy;
+               es =dy;   el =dx;
+       } else {
+               pdx=0;    pdy=incy;
+               ddx=incx; ddy=incy;
+               es =dx;   el =dy;
+       }
+ 
+       x = xstart;
+       y = ystart;
+       err = el/2;
+       mw_buf_draw_pixel(mwbuf, x, y, clr);
+ 
+       for (t = 0; t < el; ++t) {
+               err -= es; 
+               if (err < 0) {
+                       err += el;
+                       x += ddx;
+                       y += ddy;
+               } else {
+                       x += pdx;
+                       y += pdy;
+               }
+               mw_buf_draw_pixel(mwbuf, x, y, clr);
+       }
+}