杭 苏
1
Diff: Adafruit_GFX.cpp
- Revision:
- 17:c0c589ffe9bf
- Parent:
- 14:edb3c36aa1a7
--- a/Adafruit_GFX.cpp Tue Nov 11 22:08:20 2014 +0000
+++ b/Adafruit_GFX.cpp Fri Jun 17 02:24:45 2022 +0000
@@ -1,14 +1,14 @@
/***********************************
-This is a our graphics core library, for all our displays.
+This is a our graphics core library, for all our displays.
We'll be adapting all the
-existing libaries to use this core to make updating, support
+existing libaries to use this core to make updating, support
and upgrading easier!
-Adafruit invests time and resources providing this open source code,
-please support Adafruit and open-source hardware by purchasing
+Adafruit invests time and resources providing this open source code,
+please support Adafruit and open-source hardware by purchasing
products from Adafruit!
-Written by Limor Fried/Ladyada for Adafruit Industries.
+Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, check license.txt for more information
All text above must be included in any redistribution
****************************************/
@@ -31,16 +31,14 @@
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
-
+
drawPixel(x0, y0+r, color);
drawPixel(x0, y0-r, color);
drawPixel(x0+r, y0, color);
drawPixel(x0-r, y0, color);
-
- while (x<y)
- {
- if (f >= 0)
- {
+
+ while (x<y) {
+ if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
@@ -48,7 +46,7 @@
x++;
ddF_x += 2;
f += ddF_x;
-
+
drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 - x, y0 + y, color);
drawPixel(x0 + x, y0 - y, color);
@@ -67,11 +65,9 @@
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
-
- while (x<y)
- {
- if (f >= 0)
- {
+
+ while (x<y) {
+ if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
@@ -79,27 +75,23 @@
x++;
ddF_x += 2;
f += ddF_x;
-
- if (cornername & 0x4)
- {
+
+ if (cornername & 0x4) {
drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 + y, y0 + x, color);
- }
+ }
- if (cornername & 0x2)
- {
+ if (cornername & 0x2) {
drawPixel(x0 + x, y0 - y, color);
drawPixel(x0 + y, y0 - x, color);
}
- if (cornername & 0x8)
- {
+ if (cornername & 0x8) {
drawPixel(x0 - y, y0 + x, color);
drawPixel(x0 - x, y0 + y, color);
}
-
- if (cornername & 0x1)
- {
+
+ if (cornername & 0x1) {
drawPixel(x0 - y, y0 - x, color);
drawPixel(x0 - x, y0 - y, color);
}
@@ -120,11 +112,9 @@
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
-
- while (x<y)
- {
- if (f >= 0)
- {
+
+ while (x<y) {
+ if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
@@ -132,15 +122,13 @@
x++;
ddF_x += 2;
f += ddF_x;
-
- if (cornername & 0x1)
- {
+
+ if (cornername & 0x1) {
drawFastVLine(x0+x, y0-y, 2*y+1+delta, color);
drawFastVLine(x0+y, y0-x, 2*x+1+delta, color);
}
- if (cornername & 0x2)
- {
+ if (cornername & 0x2) {
drawFastVLine(x0-x, y0-y, 2*y+1+delta, color);
drawFastVLine(x0-y, y0-x, 2*x+1+delta, color);
}
@@ -153,41 +141,37 @@
void Adafruit_GFX::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color)
{
int16_t steep = abs(y1 - y0) > abs(x1 - x0);
-
- if (steep)
- {
+
+ if (steep) {
swap(x0, y0);
swap(x1, y1);
}
-
- if (x0 > x1)
- {
+
+ if (x0 > x1) {
swap(x0, x1);
swap(y0, y1);
}
-
+
int16_t dx, dy;
dx = x1 - x0;
dy = abs(y1 - y0);
-
+
int16_t err = dx / 2;
int16_t ystep;
-
+
if (y0 < y1)
ystep = 1;
else
ystep = -1;
-
- for (; x0<=x1; x0++)
- {
+
+ for (; x0<=x1; x0++) {
if (steep)
drawPixel(y0, x0, color);
else
drawPixel(x0, y0, color);
err -= dy;
- if (err < 0)
- {
+ if (err < 0) {
y0 += ystep;
err += dx;
}
@@ -204,7 +188,7 @@
{
// stupidest version - update in subclasses if desired!
for (int16_t i=x; i<x+w; i++)
- drawFastVLine(i, y, h, color);
+ drawFastVLine(i, y, h, color);
}
#endif
@@ -233,15 +217,15 @@
void Adafruit_GFX::drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color)
{
// smarter version
- drawFastHLine(x+r , y , w-2*r, color); // Top
- drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom
- drawFastVLine( x , y+r , h-2*r, color); // Left
- drawFastVLine( x+w-1, y+r , h-2*r, color); // Right
+ drawFastHLine(x+r, y, w-2*r, color); // Top
+ drawFastHLine(x+r, y+h-1, w-2*r, color); // Bottom
+ drawFastVLine( x, y+r, h-2*r, color); // Left
+ drawFastVLine( x+w-1, y+r, h-2*r, color); // Right
// draw four corners
- drawCircleHelper(x+r , y+r , r, 1, color);
- drawCircleHelper(x+w-r-1, y+r , r, 2, color);
+ drawCircleHelper(x+r, y+r, r, 1, color);
+ drawCircleHelper(x+w-r-1, y+r, r, 2, color);
drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
- drawCircleHelper(x+r , y+h-r-1, r, 8, color);
+ drawCircleHelper(x+r, y+h-r-1, r, 8, color);
}
// fill a rounded rectangle!
@@ -249,10 +233,10 @@
{
// smarter version
fillRect(x+r, y, w-2*r, h, color);
-
+
// draw four corners
fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color);
- fillCircleHelper(x+r , y+r, r, 2, h-2*r-1, color);
+ fillCircleHelper(x+r, y+r, r, 2, h-2*r-1, color);
}
// draw a triangle!
@@ -267,42 +251,45 @@
void Adafruit_GFX::fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
{
int16_t a, b, y, last;
-
+
// Sort coordinates by Y order (y2 >= y1 >= y0)
if (y0 > y1)
- swap(y0, y1); swap(x0, x1);
+ swap(y0, y1);
+ swap(x0, x1);
if (y1 > y2)
- swap(y2, y1); swap(x2, x1);
+ swap(y2, y1);
+ swap(x2, x1);
if (y0 > y1)
- swap(y0, y1); swap(x0, x1);
+ swap(y0, y1);
+ swap(x0, x1);
-
- if(y0 == y2)
- { // Handle awkward all-on-same-line case as its own thing
+
+ if(y0 == y2) {
+ // Handle awkward all-on-same-line case as its own thing
a = b = x0;
if(x1 < a)
a = x1;
else if(x1 > b)
b = x1;
-
+
if(x2 < a)
a = x2;
else if(x2 > b) b = x2;
- drawFastHLine(a, y0, b-a+1, color);
+ drawFastHLine(a, y0, b-a+1, color);
return;
}
int16_t
- dx01 = x1 - x0,
- dy01 = y1 - y0,
- dx02 = x2 - x0,
- dy02 = y2 - y0,
- dx12 = x2 - x1,
- dy12 = y2 - y1,
- sa = 0,
- sb = 0;
+ dx01 = x1 - x0,
+ dy01 = y1 - y0,
+ dx02 = x2 - x0,
+ dy02 = y2 - y0,
+ dx12 = x2 - x1,
+ dy12 = y2 - y1,
+ sa = 0,
+ sb = 0;
// For upper part of triangle, find scanline crossings for segments
// 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
@@ -315,8 +302,7 @@
else
last = y1-1; // Skip it
- for(y=y0; y<=last; y++)
- {
+ for(y=y0; y<=last; y++) {
a = x0 + sa / dy01;
b = x0 + sb / dy02;
sa += dx01;
@@ -334,8 +320,7 @@
// 0-2 and 1-2. This loop is skipped if y1=y2.
sa = dx12 * (y - y1);
sb = dx02 * (y - y0);
- for(; y<=y2; y++)
- {
+ for(; y<=y2; y++) {
a = x1 + sa / dy12;
b = x0 + sb / dy02;
sa += dx12;
@@ -352,10 +337,8 @@
void Adafruit_GFX::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
{
- for (int16_t j=0; j<h; j++)
- {
- for (int16_t i=0; i<w; i++ )
- {
+ for (int16_t j=0; j<h; j++) {
+ for (int16_t i=0; i<w; i++ ) {
if (bitmap[i + (j/8)*w] & _BV(j%8))
drawPixel(x+i, y+j, color);
}
@@ -365,19 +348,15 @@
size_t Adafruit_GFX::writeChar(uint8_t c)
{
- if (c == '\n')
- {
+ if (c == '\n') {
cursor_y += textsize*8;
cursor_x = 0;
- }
- else if (c == '\r')
+ } else if (c == '\r')
cursor_x = 0;
- else
- {
+ else {
drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize);
cursor_x += textsize*6;
- if (wrap && (cursor_x > (_width - textsize*6)))
- {
+ if (wrap && (cursor_x > (_width - textsize*6))) {
cursor_y += textsize*8;
cursor_x = 0;
}
@@ -393,22 +372,19 @@
(y >= _height) || // Clip bottom
((x + 5 * size - 1) < 0) || // Clip left
((y + 8 * size - 1) < 0) // Clip top
- )
- return;
-
- for (int8_t i=0; i<6; i++ )
- {
+ )
+ return;
+
+ for (int8_t i=0; i<6; i++ ) {
uint8_t line = 0;
- if (i == 5)
+ if (i == 5)
line = 0x0;
- else
+ else
line = font[(c*5)+i];
-
- for (int8_t j = 0; j<8; j++)
- {
- if (line & 0x1)
- {
+
+ for (int8_t j = 0; j<8; j++) {
+ if (line & 0x1) {
#if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
if (size == 1) // default size
drawPixel(x+i, y+j, color);
@@ -417,9 +393,7 @@
#else
drawPixel(x+i, y+j, color);
#endif
- }
- else if (bg != color)
- {
+ } else if (bg != color) {
#if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
if (size == 1) // default size
drawPixel(x+i, y+j, bg);
@@ -438,8 +412,7 @@
{
x %= 4; // cant be higher than 3
rotation = x;
- switch (x)
- {
+ switch (x) {
case 0:
case 2:
_width = _rawWidth;
@@ -452,3 +425,25 @@
break;
}
}
+
+void Adafruit_GFX::drawX11BitMap(const uint8_t bitmap[],uint16_t bitMapWidth,uint16_t bitMapSize,uint16_t posX,uint16_t posY)
+{
+ int16_t x1 = posX;
+ int16_t y1 = posY;
+ for(unsigned int i=0; i<bitMapSize; i++) {
+ uint8_t val = bitmap[i];
+ for(int j=0; j<8; j++) {
+ uint16_t pixColor;
+ if(val>>j & 0x01)
+ pixColor = 1;
+ else
+ pixColor = 0;
+ drawPixel(x1,y1, pixColor);
+ x1 = x1 + 1;
+ if(x1 == posX + bitMapWidth) {
+ x1 = posX;
+ y1 = y1 + 1;
+ }
+ }
+ }
+}
\ No newline at end of file