extmod/modframebuf: Consistently use "col" as name for colour variables.

Thanks to @kamikaze, aka Oleg Korsak, for the original idea and patch.

extmod/modframebuf.c

@@ -62,10 +62,10 @@ typedef struct _mp_framebuf_p_t {
 
 // Functions for MHLSB and MHMSB
 
-STATIC void mono_horiz_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t color) {
+STATIC void mono_horiz_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t col) {
     size_t index = (x + y * fb->stride) >> 3;
     int offset = fb->format == FRAMEBUF_MHMSB ? x & 0x07 : 7 - (x & 0x07);
-    ((uint8_t*)fb->buf)[index] = (((uint8_t*)fb->buf)[index] & ~(0x01 << offset)) | ((color != 0) << offset);
+    ((uint8_t*)fb->buf)[index] = (((uint8_t*)fb->buf)[index] & ~(0x01 << offset)) | ((col != 0) << offset);
 }
 
 STATIC uint32_t mono_horiz_getpixel(const mp_obj_framebuf_t *fb, int x, int y) {
@@ -90,10 +90,10 @@ STATIC void mono_horiz_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int
 
 // Functions for MVLSB format
 
-STATIC void mvlsb_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t color) {
+STATIC void mvlsb_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t col) {
     size_t index = (y >> 3) * fb->stride + x;
     uint8_t offset = y & 0x07;
-    ((uint8_t*)fb->buf)[index] = (((uint8_t*)fb->buf)[index] & ~(0x01 << offset)) | ((color != 0) << offset);
+    ((uint8_t*)fb->buf)[index] = (((uint8_t*)fb->buf)[index] & ~(0x01 << offset)) | ((col != 0) << offset);
 }
 
 STATIC uint32_t mvlsb_getpixel(const mp_obj_framebuf_t *fb, int x, int y) {
@@ -114,19 +114,19 @@ STATIC void mvlsb_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, in
 
 // Functions for RGB565 format
 
-STATIC void rgb565_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t color) {
-    ((uint16_t*)fb->buf)[x + y * fb->stride] = color;
+STATIC void rgb565_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t col) {
+    ((uint16_t*)fb->buf)[x + y * fb->stride] = col;
 }
 
 STATIC uint32_t rgb565_getpixel(const mp_obj_framebuf_t *fb, int x, int y) {
     return ((uint16_t*)fb->buf)[x + y * fb->stride];
 }
 
-STATIC void rgb565_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, int h, uint32_t colour) {
+STATIC void rgb565_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, int h, uint32_t col) {
     uint16_t *b = &((uint16_t*)fb->buf)[x + y * fb->stride];
     while (h--) {
         for (int ww = w; ww; --ww) {
-            *b++ = colour;
+            *b++ = col;
         }
         b += fb->stride - w;
     }
@@ -156,7 +156,7 @@ STATIC void gs4_hmsb_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w,
     col &= 0x0f;
     uint8_t *pixel_pair = &((uint8_t*)fb->buf)[(x + y * fb->stride) >> 1];
     uint8_t col_shifted_left = col << 4;
-    uint8_t colored_pixel_pair = col_shifted_left | col;
+    uint8_t col_pixel_pair = col_shifted_left | col;
     int pixel_count_till_next_line = (fb->stride - w) >> 1;
     bool odd_x = (x % 2 == 1);
 
@@ -169,7 +169,7 @@ STATIC void gs4_hmsb_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w,
             ww--;
         }
 
-        memset(pixel_pair, colored_pixel_pair, ww >> 1);
+        memset(pixel_pair, col_pixel_pair, ww >> 1);
         pixel_pair += ww >> 1;
 
         if (ww % 2) {
@@ -191,8 +191,8 @@ STATIC mp_framebuf_p_t formats[] = {
     [FRAMEBUF_MHMSB] = {mono_horiz_setpixel, mono_horiz_getpixel, mono_horiz_fill_rect},
 };
 
-static inline void setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t color) {
-    formats[fb->format].setpixel(fb, x, y, color);
+static inline void setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t col) {
+    formats[fb->format].setpixel(fb, x, y, col);
 }
 
 static inline uint32_t getpixel(const mp_obj_framebuf_t *fb, int x, int y) {
@@ -277,9 +277,9 @@ STATIC mp_obj_t framebuf_fill_rect(size_t n_args, const mp_obj_t *args) {
     mp_int_t y = mp_obj_get_int(args[2]);
     mp_int_t width = mp_obj_get_int(args[3]);
     mp_int_t height = mp_obj_get_int(args[4]);
-    mp_int_t color = mp_obj_get_int(args[5]);
+    mp_int_t col = mp_obj_get_int(args[5]);
 
-    fill_rect(self, x, y, width, height, color);
+    fill_rect(self, x, y, width, height, col);
 
     return mp_const_none;
 }
@@ -444,14 +444,13 @@ STATIC mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args) {
     int y1 = MAX(0, -y);
     int x0end = MIN(self->width, x + source->width);
     int y0end = MIN(self->height, y + source->height);
-    uint32_t color;
 
     for (; y0 < y0end; ++y0) {
         int cx1 = x1;
         for (int cx0 = x0; cx0 < x0end; ++cx0) {
-            color = getpixel(source, cx1, y1);
-            if (color != (uint32_t)key) {
-                setpixel(self, cx0, y0, color);
+            uint32_t col = getpixel(source, cx1, y1);
+            if (col != (uint32_t)key) {
+                setpixel(self, cx0, y0, col);
             }
             ++cx1;
         }