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Manual merge of TheNotary's RAM-based bitmap functions.

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This commit is contained in:
Phillip Burgess 2015-12-27 21:29:50 -08:00
parent e6a8c249d5
commit fb9e169398
2 changed files with 32 additions and 0 deletions
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28
Adafruit_GFX.cpp
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@ -388,6 +388,34 @@ void Adafruit_GFX::drawBitmap(int16_t x, int16_t y,
}
}
void Adafruit_GFX::drawBitmap(int16_t x, int16_t y,
uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) {
int16_t i, j, byteWidth = (w + 7) / 8;
for(j=0; j<h; j++) {
for(i=0; i<w; i++ ) {
if(bitRead(bitmap[j], 7-i)) drawPixel(x+i, y+j, color);
}
}
}
// Draw a 1-bit color bitmap at the specified x, y position from the
// provided bitmap buffer (NOT PROGMEM memory nor a const) using color
// as the foreground color and bg as the background color.
void Adafruit_GFX::drawBitmap(int16_t x, int16_t y,
uint8_t *bitmap, int16_t w, int16_t h, uint16_t color, uint16_t bg) {
int16_t i, j, byteWidth = (w + 7) / 8;
for(j=0; j<h; j++) {
for(i=0; i<w; i++ ) {
if(bitRead(bitmap[j], 7-i)) drawPixel(x+i, y+j, color);
else drawPixel(x+i, y+j, bg);
}
}
}
//Draw XBitMap Files (*.xbm), exported from GIMP,
//Usage: Export from GIMP to *.xbm, rename *.xbm to *.c and open in editor.
//C Array can be directly used with this function

4
Adafruit_GFX.h
View File

@ -56,6 +56,10 @@ class Adafruit_GFX : public Print {
int16_t w, int16_t h, uint16_t color),
drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap,
int16_t w, int16_t h, uint16_t color, uint16_t bg),
drawBitmap(int16_t x, int16_t y, uint8_t *bitmap,
int16_t w, int16_t h, uint16_t color),
drawBitmap(int16_t x, int16_t y, uint8_t *bitmap,
int16_t w, int16_t h, uint16_t color, uint16_t bg),
drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap,
int16_t w, int16_t h, uint16_t color),
drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color,