mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2026-02-05 07:07:38 +03:00
6fbdd06101
Display book cover image as background in the Continue Reading card on the home screen, improving visual identification of the current book. Key changes: - Add thumbnail generation (thumb.bmp) for EPUB and XTC/XTCH files - Uses same dithering/scaling algorithms as sleep screen covers - Target size: 240x400 (half screen) for optimal Continue Reading card fit - Add JpegToBmpConverter::jpegFileToBmpStreamWithSize() for custom target sizes - Add GfxRenderer::copyStoredBwBuffer() and freeStoredBwBuffer() for framebuffer caching to maintain fast navigation performance - Add UTF-8 safe string truncation for Korean/CJK text in title/author display - Draw white boxes behind title/author text for readability over cover image - Increase HomeActivityTask stack size to 4096 for cover image rendering - Add bounds checking in XTC thumbnail generation to prevent buffer overflow
103 lines
4.5 KiB
C++
103 lines
4.5 KiB
C++
#pragma once
|
|
|
|
#include <EInkDisplay.h>
|
|
#include <EpdFontFamily.h>
|
|
|
|
#include <map>
|
|
|
|
#include "Bitmap.h"
|
|
|
|
class GfxRenderer {
|
|
public:
|
|
enum RenderMode { BW, GRAYSCALE_LSB, GRAYSCALE_MSB };
|
|
|
|
// Logical screen orientation from the perspective of callers
|
|
enum Orientation {
|
|
Portrait, // 480x800 logical coordinates (current default)
|
|
LandscapeClockwise, // 800x480 logical coordinates, rotated 180° (swap top/bottom)
|
|
PortraitInverted, // 480x800 logical coordinates, inverted
|
|
LandscapeCounterClockwise // 800x480 logical coordinates, native panel orientation
|
|
};
|
|
|
|
private:
|
|
static constexpr size_t BW_BUFFER_CHUNK_SIZE = 8000; // 8KB chunks to allow for non-contiguous memory
|
|
static constexpr size_t BW_BUFFER_NUM_CHUNKS = EInkDisplay::BUFFER_SIZE / BW_BUFFER_CHUNK_SIZE;
|
|
static_assert(BW_BUFFER_CHUNK_SIZE * BW_BUFFER_NUM_CHUNKS == EInkDisplay::BUFFER_SIZE,
|
|
"BW buffer chunking does not line up with display buffer size");
|
|
|
|
EInkDisplay& einkDisplay;
|
|
RenderMode renderMode;
|
|
Orientation orientation;
|
|
uint8_t* bwBufferChunks[BW_BUFFER_NUM_CHUNKS] = {nullptr};
|
|
std::map<int, EpdFontFamily> fontMap;
|
|
void renderChar(const EpdFontFamily& fontFamily, uint32_t cp, int* x, const int* y, bool pixelState,
|
|
EpdFontFamily::Style style) const;
|
|
void freeBwBufferChunks();
|
|
void rotateCoordinates(int x, int y, int* rotatedX, int* rotatedY) const;
|
|
|
|
public:
|
|
explicit GfxRenderer(EInkDisplay& einkDisplay) : einkDisplay(einkDisplay), renderMode(BW), orientation(Portrait) {}
|
|
~GfxRenderer() { freeBwBufferChunks(); }
|
|
|
|
static constexpr int VIEWABLE_MARGIN_TOP = 9;
|
|
static constexpr int VIEWABLE_MARGIN_RIGHT = 3;
|
|
static constexpr int VIEWABLE_MARGIN_BOTTOM = 3;
|
|
static constexpr int VIEWABLE_MARGIN_LEFT = 3;
|
|
|
|
// Setup
|
|
void insertFont(int fontId, EpdFontFamily font);
|
|
|
|
// Orientation control (affects logical width/height and coordinate transforms)
|
|
void setOrientation(const Orientation o) { orientation = o; }
|
|
Orientation getOrientation() const { return orientation; }
|
|
|
|
// Screen ops
|
|
int getScreenWidth() const;
|
|
int getScreenHeight() const;
|
|
void displayBuffer(EInkDisplay::RefreshMode refreshMode = EInkDisplay::FAST_REFRESH) const;
|
|
// EXPERIMENTAL: Windowed update - display only a rectangular region
|
|
void displayWindow(int x, int y, int width, int height) const;
|
|
void invertScreen() const;
|
|
void clearScreen(uint8_t color = 0xFF) const;
|
|
|
|
// Drawing
|
|
void drawPixel(int x, int y, bool state = true) 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) const;
|
|
|
|
// Text
|
|
int getTextWidth(int fontId, const char* text, EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
|
|
void drawCenteredText(int fontId, int y, const char* text, bool black = true,
|
|
EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
|
|
void drawText(int fontId, int x, int y, const char* text, bool black = true,
|
|
EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
|
|
int getSpaceWidth(int fontId) const;
|
|
int getFontAscenderSize(int fontId) const;
|
|
int getLineHeight(int fontId) const;
|
|
std::string truncatedText(int fontId, const char* text, int maxWidth,
|
|
EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
|
|
|
|
// UI Components
|
|
void drawButtonHints(int fontId, const char* btn1, const char* btn2, const char* btn3, const char* btn4) const;
|
|
|
|
// Grayscale functions
|
|
void setRenderMode(const RenderMode mode) { this->renderMode = mode; }
|
|
void copyGrayscaleLsbBuffers() const;
|
|
void copyGrayscaleMsbBuffers() const;
|
|
void displayGrayBuffer() const;
|
|
bool storeBwBuffer(); // Returns true if buffer was stored successfully
|
|
void restoreBwBuffer(); // Restore and free the stored buffer
|
|
bool copyStoredBwBuffer(); // Copy stored buffer to framebuffer without freeing
|
|
void freeStoredBwBuffer(); // Free the stored buffer manually
|
|
void cleanupGrayscaleWithFrameBuffer() const;
|
|
|
|
// Low level functions
|
|
uint8_t* getFrameBuffer() const;
|
|
static size_t getBufferSize();
|
|
void grayscaleRevert() const;
|
|
void getOrientedViewableTRBL(int* outTop, int* outRight, int* outBottom, int* outLeft) const;
|
|
};
|