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Update OLED.cpp

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This commit is contained in:
Ben V. Brown
2024-03-21 21:08:48 +11:00
parent 5f48b53d03
commit bf36fd6d15
1 changed files with 13 additions and 18 deletions
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31
source/Core/Drivers/OLED.cpp
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@@ -670,39 +670,34 @@ void OLED::drawArea(int16_t x, int8_t y, uint8_t width, uint8_t height, const ui
// Draw an area, but y must be aligned on 0/8 offset
// For data which has octets swapped in a 16-bit word.
void OLED::drawAreaSwapped(int16_t x, int8_t y, uint8_t wide, uint8_t height, const uint8_t *ptr) {
// Splat this from x->x+wide in two strides
if (x <= -wide) {
void OLED::drawAreaSwapped(int16_t x, int8_t y, uint8_t width, uint8_t height, const uint8_t *ptr) {
// Splat this from x->x+width in two strides
if (x <= -width) {
return; // cutoffleft
}
if (x > 96) {
if (x > OLED_WIDTH) {
return; // cutoff right
}
uint8_t visibleStart = 0;
uint8_t visibleEnd = wide;
uint8_t visibleEnd = width;
// trimming to draw partials
if (x < 0) {
visibleStart -= x; // subtract negative value == add absolute value
}
if (x + wide > 96) {
visibleEnd = 96 - x;
if (x + width > OLED_WIDTH) {
visibleEnd = OLED_WIDTH - x;
}
if (y == 0) {
// Splat first line of data
uint8_t rowsDrawn = 0;
while (height > 0) {
for (uint8_t xx = visibleStart; xx < visibleEnd; xx += 2) {
stripPointers[0][xx + x] = ptr[xx + 1];
stripPointers[0][xx + x + 1] = ptr[xx];
}
}
if (y == 8 || height == 16) {
// Splat the second line
for (uint8_t xx = visibleStart; xx < visibleEnd; xx += 2) {
stripPointers[1][x + xx] = ptr[xx + 1 + (height == 16 ? wide : 0)];
stripPointers[1][x + xx + 1] = ptr[xx + (height == 16 ? wide : 0)];
stripPointers[(y / 8) + rowsDrawn][x + xx] = ptr[xx + 1 + (rowsDrawn * width)];
stripPointers[(y / 8) + rowsDrawn][x + xx + 1] = ptr[xx + (rowsDrawn * width)];
}
height -= 8;
rowsDrawn++;
}
}