finn/crosspoint-reader
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Move to SDK EInkDisplay and enable anti-aliased 2-bit text (#5)

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* First pass at moving to SDK EInkDisplay library

* Add 2-bit grayscale text and anti-aliased rendering of text

* Render status bar for empty chapters

* Refresh screen every 15 pages to avoid ghosting

* Simplify boot and sleep screens

* Give FileSelectionScreen task more stack memory

* Move text around slightly on Boot and Sleep screens

* Re-use existing buffer and write to whole screen for 'partial update'
This commit is contained in:
Dave Allie
2025-12-08 19:48:49 +11:00
committed by GitHub
parent de453fed1d
commit 2ed8017aa2
31 changed files with 11300 additions and 9243 deletions
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26
lib/Epub/Epub/Section.cpp
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@@ -98,21 +98,15 @@ bool Section::persistPageDataToSD() {
return true;
}
void Section::renderPage() const {
if (0 <= currentPage && currentPage < pageCount) {
const auto filePath = "/sd" + cachePath + "/page_" + std::to_string(currentPage) + ".bin";
std::ifstream inputFile(filePath);
const Page* p = Page::deserialize(inputFile);
inputFile.close();
p->render(renderer);
delete p;
} else if (pageCount == 0) {
Serial.println("No pages to render");
const int width = renderer.getTextWidth("Empty chapter", BOLD);
renderer.drawText((renderer.getPageWidth() - width) / 2, 300, "Empty chapter", 1, BOLD);
} else {
Serial.printf("Page out of bounds: %d (max %d)\n", currentPage, pageCount);
const int width = renderer.getTextWidth("Out of bounds", BOLD);
renderer.drawText((renderer.getPageWidth() - width) / 2, 300, "Out of bounds", 1, BOLD);
Page* Section::loadPageFromSD() const {
const auto filePath = "/sd" + cachePath + "/page_" + std::to_string(currentPage) + ".bin";
if (!SD.exists(filePath.c_str() + 3)) {
Serial.printf("Page file does not exist: %s\n", filePath.c_str());
return nullptr;
}
std::ifstream inputFile(filePath);
Page* p = Page::deserialize(inputFile);
inputFile.close();
return p;
}

2
lib/Epub/Epub/Section.h
View File

@@ -26,5 +26,5 @@ class Section {
void setupCacheDir() const;
void clearCache() const;
bool persistPageDataToSD();
void renderPage() const;
Page* loadPageFromSD() const;
};

2
lib/Epub/Epub/blocks/TextBlock.cpp
View File

@@ -165,7 +165,7 @@ void TextBlock::render(const EpdRenderer& renderer, const int x, const int y) co
} else if (wordStyles[i] & ITALIC_SPAN) {
fontStyle = ITALIC;
}
renderer.drawText(x + wordXpos[i], y, words[i].c_str(), 1, fontStyle);
renderer.drawText(x + wordXpos[i], y, words[i].c_str(), true, fontStyle);
}
}