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Fix scrollbar

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This commit is contained in:
Ben V. Brown
2024-04-09 20:06:19 +10:00
parent f4365742e3
commit ab930c4cf6
1 changed files with 9 additions and 4 deletions
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13
source/Core/Drivers/OLED.cpp
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@@ -209,17 +209,22 @@ void OLED::drawChar(const uint16_t charCode, const FontStyle fontStyle, const ui
*/ */
void OLED::drawScrollIndicator(uint8_t y, uint8_t height) { void OLED::drawScrollIndicator(uint8_t y, uint8_t height) {
union u_type { union u_type {
uint16_t whole; uint32_t whole;
uint8_t strips[2]; uint8_t strips[4];
} column; } column;
column.whole = (1 << height) - 1; column.whole = (1 << height) - 1; // preload a set of set bits of height
column.whole <<= y; column.whole <<= y; // Shift down by the y value
// Draw a one pixel wide bar to the left with a single pixel as // Draw a one pixel wide bar to the left with a single pixel as
// the scroll indicator. // the scroll indicator.
fillArea(OLED_WIDTH - 1, 0, 1, 8, column.strips[0]); fillArea(OLED_WIDTH - 1, 0, 1, 8, column.strips[0]);
fillArea(OLED_WIDTH - 1, 8, 1, 8, column.strips[1]); fillArea(OLED_WIDTH - 1, 8, 1, 8, column.strips[1]);
#if OLED_HEIGHT == 32
fillArea(OLED_WIDTH - 1, 16, 1, 8, column.strips[2]);
fillArea(OLED_WIDTH - 1, 24, 1, 8, column.strips[3]);
#endif
} }
/** /**