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Add drawXBitmap() function and example

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Example is in Generic folder, draw the Espressif logo on the screen.
This commit is contained in:
Bodmer
2018-04-23 17:16:18 +01:00
parent 6213de3ab9
commit 54b3f0f63d
7 changed files with 168 additions and 4 deletions
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TFT_eSPI.cpp
+50 -2
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@@ -1764,8 +1764,8 @@ void TFT_eSPI::fillTriangle ( int32_t x0, int32_t y0, int32_t x1, int32_t y1, in
** Function name: drawBitmap
** Description: Draw an image stored in an array on the TFT
***************************************************************************************/
void TFT_eSPI::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) {
void TFT_eSPI::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
{
spi_begin();
inTransaction = true;
@@ -1784,6 +1784,54 @@ void TFT_eSPI::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w
}
/***************************************************************************************
** Function name: drawXBitmap
** Description: Draw an image stored in an XBM array onto the TFT
***************************************************************************************/
void TFT_eSPI::drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
{
spi_begin();
inTransaction = true;
int32_t i, j, byteWidth = (w + 7) / 8;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++ ) {
if (pgm_read_byte(bitmap + j * byteWidth + i / 8) & (1 << (i & 7))) {
drawPixel(x + i, y + j, color);
}
}
}
inTransaction = false;
spi_end();
}
/***************************************************************************************
** Function name: drawXBitmap
** Description: Draw an XBM image with foreground and background colors
***************************************************************************************/
void TFT_eSPI::drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color, uint16_t bgcolor)
{
spi_begin();
inTransaction = true;
int32_t i, j, byteWidth = (w + 7) / 8;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++ ) {
if (pgm_read_byte(bitmap + j * byteWidth + i / 8) & (1 << (i & 7)))
drawPixel(x + i, y + j, color);
else drawPixel(x + i, y + j, bgcolor);
}
}
inTransaction = false;
spi_end();
}
/***************************************************************************************
** Function name: setCursor
** Description: Set the text cursor x,y position