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WIP: extend bitmap to y direction

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This commit is contained in:
Jonas Diemer 2026-01-12 18:36:07 +01:00
parent 52995fa722
commit 9dc839c244
3 changed files with 39 additions and 12 deletions
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40
lib/GfxRenderer/GfxRenderer.cpp
View File

@ -152,8 +152,17 @@ void GfxRenderer::drawImage(const uint8_t bitmap[], const int x, const int y, co
einkDisplay.drawImage(bitmap, rotatedX, rotatedY, width, height);
}
void GfxRenderer::drawVal(const int x, const int y, const uint8_t val) const {
if (renderMode == BW && val < 3) {
drawPixel(x, y);
} else if (renderMode == GRAYSCALE_MSB && (val == 1 || val == 2)) {
drawPixel(x, y, false);
} else if (renderMode == GRAYSCALE_LSB && val == 1) {
drawPixel(x, y, false);
}
}
void GfxRenderer::drawBitmap(const Bitmap& bitmap, const int x, const int y, const int maxWidth, const int maxHeight,
const float cropX, const float cropY) const {
const float cropX, const float cropY, bool extend) const {
float scale = 1.0f;
bool isScaled = false;
int cropPixX = std::floor(bitmap.getWidth() * cropX / 2.0f);
@ -220,12 +229,29 @@ void GfxRenderer::drawBitmap(const Bitmap& bitmap, const int x, const int y, con
const uint8_t val = outputRow[bmpX / 4] >> (6 - ((bmpX * 2) % 8)) & 0x3;
if (renderMode == BW && val < 3) {
drawPixel(screenX, screenY);
} else if (renderMode == GRAYSCALE_MSB && (val == 1 || val == 2)) {
drawPixel(screenX, screenY, false);
} else if (renderMode == GRAYSCALE_LSB && val == 1) {
drawPixel(screenX, screenY, false);
drawVal(screenX, screenY, val);
// draw extended pixels
/// amount of pixels taken from bitmap and repeated to extend
int extendY = 10; // TODO: fix rounding errors if this is not a divisor of height?
// don't draw MSB for darker extended area
// if (extend && renderMode != GRAYSCALE_MSB) {
if (extend) {
if (bmpY < extendY) {
for (int ny = 0; ny < extendY; ny++) {
// TODO: handle when extendY > y
const uint8_t rval = val + random(2);
drawVal(screenX, y - (bmpY + (extendY - 3) * (ny)), renderMode == GRAYSCALE_MSB ? rval : val);
}
// drawVal(screenX, 2*y - screenY, val);
}
int endY = y + bitmap.getHeight();
// Serial.printf("[%lu] [GFX] Drawing bottom extension: screenY=%d, endY=%d\n", millis(), screenY, endY);
if (bmpY >= bitmap.getHeight() - extendY) {
for (int ny = 0; ny < extendY; ny++) {
drawVal(screenX, screenY + (ny + 1) * (extendY - 2), val);
}
}
}
}
}

5
lib/GfxRenderer/GfxRenderer.h
View File

@ -62,12 +62,13 @@ class GfxRenderer {
// Drawing
void drawPixel(int x, int y, bool state = true) const;
void drawVal(const int x, const int y, const uint8_t val) const;
void drawLine(int x1, int y1, int x2, int y2, bool state = true) const;
void drawRect(int x, int y, int width, int height, bool state = true) const;
void fillRect(int x, int y, int width, int height, bool state = true) const;
void drawImage(const uint8_t bitmap[], int x, int y, int width, int height) const;
void drawBitmap(const Bitmap& bitmap, int x, int y, int maxWidth, int maxHeight, float cropX = 0,
float cropY = 0) const;
void drawBitmap(const Bitmap& bitmap, int x, int y, int maxWidth, int maxHeight, float cropX = 0, float cropY = 0,
bool extend = false) const;
// Text
int getTextWidth(int fontId, const char* text, EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;

6
src/activities/boot_sleep/SleepActivity.cpp
View File

@ -172,20 +172,20 @@ void SleepActivity::renderBitmapSleepScreen(const Bitmap& bitmap) const {
Serial.printf("[%lu] [SLP] drawing to %d x %d\n", millis(), x, y);
renderer.clearScreen();
renderer.drawBitmap(bitmap, x, y, pageWidth, pageHeight, cropX, cropY);
renderer.drawBitmap(bitmap, x, y, pageWidth, pageHeight, cropX, cropY, true);
renderer.displayBuffer(EInkDisplay::HALF_REFRESH);
if (bitmap.hasGreyscale()) {
bitmap.rewindToData();
renderer.clearScreen(0x00);
renderer.setRenderMode(GfxRenderer::GRAYSCALE_LSB);
renderer.drawBitmap(bitmap, x, y, pageWidth, pageHeight, cropX, cropY);
renderer.drawBitmap(bitmap, x, y, pageWidth, pageHeight, cropX, cropY, true);
renderer.copyGrayscaleLsbBuffers();
bitmap.rewindToData();
renderer.clearScreen(0x00);
renderer.setRenderMode(GfxRenderer::GRAYSCALE_MSB);
renderer.drawBitmap(bitmap, x, y, pageWidth, pageHeight, cropX, cropY);
renderer.drawBitmap(bitmap, x, y, pageWidth, pageHeight, cropX, cropY, true);
renderer.copyGrayscaleMsbBuffers();
renderer.displayGrayBuffer();