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Factor out truncation function.

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This commit is contained in:
Jonas Diemer 2025-12-30 18:02:33 +01:00
parent 912bcac992
commit a3a3954062
3 changed files with 14 additions and 7 deletions
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11
lib/GfxRenderer/GfxRenderer.cpp
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@ -238,6 +238,17 @@ void GfxRenderer::displayBuffer(const EInkDisplay::RefreshMode refreshMode) cons
einkDisplay.displayBuffer(refreshMode); einkDisplay.displayBuffer(refreshMode);
} }
std::string GfxRenderer::truncatedText(const int fontId, const char* text, const int maxWidth,
const EpdFontStyle style) const {
std::string item = text;
int itemWidth = getTextWidth(fontId, item.c_str(), style);
while (itemWidth > maxWidth && item.length() > 8) {
item.replace(item.length() - 5, 5, "...");
itemWidth = getTextWidth(fontId, item.c_str(), style);
}
return item;
}
// Note: Internal driver treats screen in command orientation; this library exposes a logical orientation // Note: Internal driver treats screen in command orientation; this library exposes a logical orientation
int GfxRenderer::getScreenWidth() const { int GfxRenderer::getScreenWidth() const {
switch (orientation) { switch (orientation) {

1
lib/GfxRenderer/GfxRenderer.h
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@ -75,6 +75,7 @@ class GfxRenderer {
int getSpaceWidth(int fontId) const; int getSpaceWidth(int fontId) const;
int getFontAscenderSize(int fontId) const; int getFontAscenderSize(int fontId) const;
int getLineHeight(int fontId) const; int getLineHeight(int fontId) const;
std::string truncatedText(const int fontId, const char* text, const int maxWidth, const EpdFontStyle style) const;
// UI Components // UI Components
void drawButtonHints(int fontId, const char* btn1, const char* btn2, const char* btn3, const char* btn4) const; void drawButtonHints(int fontId, const char* btn1, const char* btn2, const char* btn3, const char* btn4) const;

9
src/activities/reader/EpubReaderChapterSelectionActivity.cpp
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@ -121,13 +121,8 @@ void EpubReaderChapterSelectionActivity::renderScreen() {
const auto pageWidth = renderer.getScreenWidth(); const auto pageWidth = renderer.getScreenWidth();
const int pageItems = getPageItems(); const int pageItems = getPageItems();
std::string item = epub->getTitle(); std::string title = renderer.truncatedText(UI_12_FONT_ID, epub->getTitle().c_str(), pageWidth - 40, BOLD);
int itemWidth = renderer.getTextWidth(UI_12_FONT_ID, item.c_str(), BOLD); renderer.drawCenteredText(UI_12_FONT_ID, 15, title.c_str(), true, BOLD);
while (itemWidth > renderer.getScreenWidth() - 40 && item.length() > 8) {
item.replace(item.length() - 5, 5, "...");
itemWidth = renderer.getTextWidth(UI_12_FONT_ID, item.c_str(), BOLD);
}
renderer.drawCenteredText(UI_12_FONT_ID, 15, item.c_str(), true, BOLD);
const auto pageStartIndex = selectorIndex / pageItems * pageItems; const auto pageStartIndex = selectorIndex / pageItems * pageItems;
renderer.fillRect(0, 60 + (selectorIndex % pageItems) * 30 - 2, pageWidth - 1, 30); renderer.fillRect(0, 60 + (selectorIndex % pageItems) * 30 - 2, pageWidth - 1, 30);