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add scaling to bitmaps for EPD display, and enable buzzer for Thinknode M1

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JQ
2025-05-27 19:20:35 -07:00
parent d8c2b3ab47
commit d47c0cfccf
2 changed files with 36 additions and 1 deletions
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src/helpers/ui/GxEPDDisplay.cpp
+33 -1
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@@ -81,7 +81,39 @@ void GxEPDDisplay::drawRect(int x, int y, int w, int h) {
}
void GxEPDDisplay::drawXbm(int x, int y, const uint8_t* bits, int w, int h) {
display.drawBitmap(x*SCALE_X, (y*SCALE_Y) + 10, bits, w, h, GxEPD_BLACK);
// Calculate the base position in display coordinates
uint16_t startX = x * SCALE_X;
uint16_t startY = y * SCALE_Y;
// Width in bytes for bitmap processing
uint16_t widthInBytes = (w + 7) / 8;
// Process the bitmap row by row
for (uint16_t by = 0; by < h; by++) {
// Calculate the target y-coordinates for this logical row
int y1 = startY + (int)(by * SCALE_Y);
int y2 = startY + (int)((by + 1) * SCALE_Y);
int block_h = y2 - y1;
// Scan across the row bit by bit
for (uint16_t bx = 0; bx < w; bx++) {
// Calculate the target x-coordinates for this logical column
int x1 = startX + (int)(bx * SCALE_X);
int x2 = startX + (int)((bx + 1) * SCALE_X);
int block_w = x2 - x1;
// Get the current bit
uint16_t byteOffset = (by * widthInBytes) + (bx / 8);
uint8_t bitMask = 0x80 >> (bx & 7);
bool bitSet = pgm_read_byte(bits + byteOffset) & bitMask;
// If the bit is set, draw a block of pixels
if (bitSet) {
// Draw the block as a filled rectangle
display.fillRect(x1, y1, block_w, block_h, GxEPD_BLACK);
}
}
}
}
uint16_t GxEPDDisplay::getTextWidth(const char* str) {