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https://github.com/daveallie/crosspoint-reader.git
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c98ba142e8
~~Quick~~ fix for https://github.com/daveallie/crosspoint-reader/issues/362 (this just applies to the chapter selection menu:) ~~If the orientation is portrait, hints as we know them make sense to draw. If the orientation is inverted, we'd have to change the order of the labels (along with everything's position), and if it's one of the landscape choices, we'd have to render the text and buttons vertically. All those other cases will be more complicated.~~ ~~Punt on this for now by only rendering if portrait.~~ Update: this now draws the hints at the physical button position no matter what the orientation is, by temporarily changing orientation to portrait. --------- Co-authored-by: Maeve Andrews <maeve@git.mail.maeveandrews.com>
112 lines
5.0 KiB
C++
112 lines
5.0 KiB
C++
#pragma once
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#include <EInkDisplay.h>
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#include <EpdFontFamily.h>
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#include <map>
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#include "Bitmap.h"
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class GfxRenderer {
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public:
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enum RenderMode { BW, GRAYSCALE_LSB, GRAYSCALE_MSB };
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// Logical screen orientation from the perspective of callers
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enum Orientation {
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Portrait, // 480x800 logical coordinates (current default)
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LandscapeClockwise, // 800x480 logical coordinates, rotated 180° (swap top/bottom)
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PortraitInverted, // 480x800 logical coordinates, inverted
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LandscapeCounterClockwise // 800x480 logical coordinates, native panel orientation
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};
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private:
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static constexpr size_t BW_BUFFER_CHUNK_SIZE = 8000; // 8KB chunks to allow for non-contiguous memory
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static constexpr size_t BW_BUFFER_NUM_CHUNKS = EInkDisplay::BUFFER_SIZE / BW_BUFFER_CHUNK_SIZE;
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static_assert(BW_BUFFER_CHUNK_SIZE * BW_BUFFER_NUM_CHUNKS == EInkDisplay::BUFFER_SIZE,
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"BW buffer chunking does not line up with display buffer size");
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EInkDisplay& einkDisplay;
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RenderMode renderMode;
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Orientation orientation;
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uint8_t* bwBufferChunks[BW_BUFFER_NUM_CHUNKS] = {nullptr};
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std::map<int, EpdFontFamily> fontMap;
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void renderChar(const EpdFontFamily& fontFamily, uint32_t cp, int* x, const int* y, bool pixelState,
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EpdFontFamily::Style style) const;
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void freeBwBufferChunks();
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void rotateCoordinates(int x, int y, int* rotatedX, int* rotatedY) const;
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public:
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explicit GfxRenderer(EInkDisplay& einkDisplay) : einkDisplay(einkDisplay), renderMode(BW), orientation(Portrait) {}
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~GfxRenderer() { freeBwBufferChunks(); }
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static constexpr int VIEWABLE_MARGIN_TOP = 9;
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static constexpr int VIEWABLE_MARGIN_RIGHT = 3;
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static constexpr int VIEWABLE_MARGIN_BOTTOM = 3;
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static constexpr int VIEWABLE_MARGIN_LEFT = 3;
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// Setup
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void insertFont(int fontId, EpdFontFamily font);
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// Orientation control (affects logical width/height and coordinate transforms)
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void setOrientation(const Orientation o) { orientation = o; }
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Orientation getOrientation() const { return orientation; }
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// Screen ops
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int getScreenWidth() const;
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int getScreenHeight() const;
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void displayBuffer(EInkDisplay::RefreshMode refreshMode = EInkDisplay::FAST_REFRESH) const;
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// EXPERIMENTAL: Windowed update - display only a rectangular region
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void displayWindow(int x, int y, int width, int height) const;
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void invertScreen() const;
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void clearScreen(uint8_t color = 0xFF) const;
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// Drawing
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void drawPixel(int x, int y, bool state = true) const;
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void drawLine(int x1, int y1, int x2, int y2, bool state = true) const;
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void drawRect(int x, int y, int width, int height, bool state = true) const;
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void fillRect(int x, int y, int width, int height, bool state = true) const;
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void drawImage(const uint8_t bitmap[], int x, int y, int width, int height) const;
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void drawBitmap(const Bitmap& bitmap, int x, int y, int maxWidth, int maxHeight, float cropX = 0,
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float cropY = 0) const;
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void drawBitmap1Bit(const Bitmap& bitmap, int x, int y, int maxWidth, int maxHeight) const;
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void fillPolygon(const int* xPoints, const int* yPoints, int numPoints, bool state = true) const;
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// Text
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int getTextWidth(int fontId, const char* text, EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
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void drawCenteredText(int fontId, int y, const char* text, bool black = true,
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EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
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void drawText(int fontId, int x, int y, const char* text, bool black = true,
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EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
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int getSpaceWidth(int fontId) const;
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int getFontAscenderSize(int fontId) const;
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int getLineHeight(int fontId) const;
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std::string truncatedText(int fontId, const char* text, int maxWidth,
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EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
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// UI Components
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void drawButtonHints(int fontId, const char* btn1, const char* btn2, const char* btn3, const char* btn4);
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void drawSideButtonHints(int fontId, const char* topBtn, const char* bottomBtn) const;
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private:
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// Helper for drawing rotated text (90 degrees clockwise, for side buttons)
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void drawTextRotated90CW(int fontId, int x, int y, const char* text, bool black = true,
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EpdFontFamily::Style style = EpdFontFamily::REGULAR) const;
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int getTextHeight(int fontId) const;
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public:
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// Grayscale functions
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void setRenderMode(const RenderMode mode) { this->renderMode = mode; }
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void copyGrayscaleLsbBuffers() const;
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void copyGrayscaleMsbBuffers() const;
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void displayGrayBuffer() const;
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bool storeBwBuffer(); // Returns true if buffer was stored successfully
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void restoreBwBuffer(); // Restore and free the stored buffer
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void cleanupGrayscaleWithFrameBuffer() const;
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// Low level functions
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uint8_t* getFrameBuffer() const;
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static size_t getBufferSize();
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void grayscaleRevert() const;
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void getOrientedViewableTRBL(int* outTop, int* outRight, int* outBottom, int* outLeft) const;
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};
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