Justin Mitchell
cf4f7be8af
Consolidate multi-line conditional statement in GfxRenderer onto fewer lines without changing logic
1936 lines
72 KiB
C++
1936 lines
72 KiB
C++
#include "GfxRenderer.h"
|
|
|
|
#include <BidiUtils.h>
|
|
#include <FontDecompressor.h>
|
|
#include <HalGPIO.h>
|
|
#include <Logging.h>
|
|
#include <SdCardFont.h>
|
|
#include <Utf8.h>
|
|
|
|
#include <algorithm>
|
|
|
|
#include "FontCacheManager.h"
|
|
|
|
namespace {
|
|
|
|
/**
|
|
* Resolves the requested style to the best available style in the given SD card font.
|
|
* Falls back gracefully when the font lacks the requested variant.
|
|
*/
|
|
uint8_t resolveSdCardStyle(const SdCardFont& font, const EpdFontFamily::Style style) {
|
|
return font.resolveStyle(static_cast<uint8_t>(style));
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
const char* resolveVisualText(const char* text, std::string& visualBuffer, BidiUtils::BidiBaseDir baseDir);
|
|
} // namespace
|
|
|
|
const uint8_t* GfxRenderer::getGlyphBitmap(const EpdFontData* fontData, const EpdGlyph* glyph) const {
|
|
if (fontData->groups != nullptr) {
|
|
auto* fd = fontCacheManager_ ? fontCacheManager_->getDecompressor() : nullptr;
|
|
if (!fd) {
|
|
LOG_ERR("GFX", "Compressed font but no FontDecompressor set");
|
|
return nullptr;
|
|
}
|
|
uint32_t glyphIndex = static_cast<uint32_t>(glyph - fontData->glyph);
|
|
// For page-buffer hits the pointer is stable for the page lifetime.
|
|
// For hot-group hits it is valid only until the next getBitmap() call — callers
|
|
// must consume it (draw the glyph) before requesting another bitmap.
|
|
return fd->getBitmap(fontData, glyph, glyphIndex);
|
|
}
|
|
// For SD card fonts, check if the glyph was loaded on demand into the overflow
|
|
// buffer. getOverflowBitmap() returns:
|
|
// - bitmap pointer for overflow glyphs with bitmap data
|
|
// - nullptr for overflow glyphs without bitmap data (e.g. space: width=0, height=0)
|
|
// - nullptr for non-overflow glyphs (normal prewarmed path)
|
|
// We distinguish overflow-with-no-bitmap from non-overflow by checking isOverflowGlyph().
|
|
if (fontData->glyphMissCtx) {
|
|
auto* sdFont = SdCardFont::fromMissCtx(fontData->glyphMissCtx);
|
|
if (sdFont->isOverflowGlyph(glyph)) {
|
|
return sdFont->getOverflowBitmap(glyph); // may be nullptr for zero-width glyphs
|
|
}
|
|
}
|
|
return &fontData->bitmap[glyph->dataOffset];
|
|
}
|
|
|
|
void GfxRenderer::ensureSdCardFontReady(int fontId, const char* utf8Text, uint8_t styleMask) const {
|
|
auto it = sdCardFonts_.find(fontId);
|
|
if (it != sdCardFonts_.end()) {
|
|
int missed = it->second->buildAdvanceTable(utf8Text, styleMask);
|
|
if (missed > 0) {
|
|
LOG_DBG("GFX", "ensureSdCardFontReady: %d glyph(s) not found", missed);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::ensureSdCardFontReady(int fontId, const std::vector<std::string>& words, bool includeHyphen,
|
|
uint8_t styleMask) const {
|
|
auto it = sdCardFonts_.find(fontId);
|
|
if (it != sdCardFonts_.end()) {
|
|
// Augment the persistent advance-only table for layout measurement.
|
|
// The table survives across paragraphs/sections (capped per font), so
|
|
// repeated indexing of the same SD font amortizes glyph-metric SD reads.
|
|
int missed = it->second->buildAdvanceTable(words, includeHyphen, styleMask);
|
|
if (missed > 0) {
|
|
LOG_DBG("GFX", "ensureSdCardFontReady: %d glyph(s) not found", missed);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::begin() {
|
|
frameBuffer = display.getFrameBuffer();
|
|
if (!frameBuffer) {
|
|
LOG_ERR("GFX", "!! No framebuffer");
|
|
assert(false);
|
|
}
|
|
panelWidth = display.getDisplayWidth();
|
|
panelHeight = display.getDisplayHeight();
|
|
panelWidthBytes = display.getDisplayWidthBytes();
|
|
frameBufferSize = display.getBufferSize();
|
|
bwBufferChunks.assign((frameBufferSize + BW_BUFFER_CHUNK_SIZE - 1) / BW_BUFFER_CHUNK_SIZE, nullptr);
|
|
}
|
|
|
|
bool GfxRenderer::isFontCacheScanning() const { return fontCacheManager_ && fontCacheManager_->isScanning(); }
|
|
|
|
void GfxRenderer::insertFont(const int fontId, EpdFontFamily font) {
|
|
auto result = fontMap.insert({fontId, font});
|
|
if (!result.second) {
|
|
LOG_ERR("GFX", "Font ID %d already registered, ignoring duplicate", fontId);
|
|
}
|
|
}
|
|
|
|
// Translate logical (x,y) coordinates to physical panel coordinates based on current orientation
|
|
// This should always be inlined for better performance
|
|
static inline void rotateCoordinates(const GfxRenderer::Orientation orientation, const int x, const int y, int* phyX,
|
|
int* phyY, const uint16_t panelWidth, const uint16_t panelHeight) {
|
|
switch (orientation) {
|
|
case GfxRenderer::Portrait: {
|
|
// Logical portrait (480x800) → panel (800x480)
|
|
// Rotation: 90 degrees clockwise
|
|
*phyX = y;
|
|
*phyY = panelHeight - 1 - x;
|
|
break;
|
|
}
|
|
case GfxRenderer::LandscapeClockwise: {
|
|
// Logical landscape (800x480) rotated 180 degrees (swap top/bottom and left/right)
|
|
*phyX = panelWidth - 1 - x;
|
|
*phyY = panelHeight - 1 - y;
|
|
break;
|
|
}
|
|
case GfxRenderer::PortraitInverted: {
|
|
// Logical portrait (480x800) → panel (800x480)
|
|
// Rotation: 90 degrees counter-clockwise
|
|
*phyX = panelWidth - 1 - y;
|
|
*phyY = x;
|
|
break;
|
|
}
|
|
case GfxRenderer::LandscapeCounterClockwise: {
|
|
// Logical landscape (800x480) aligned with panel orientation
|
|
*phyX = x;
|
|
*phyY = y;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
enum class TextRotation { None, Rotated90CW };
|
|
|
|
// Shared glyph rendering logic for normal and rotated text.
|
|
// Coordinate mapping and cursor advance direction are selected at compile time via the template parameter.
|
|
// Render a glyph at 50% scale. Used for SUP/SUB style bits.
|
|
//
|
|
// Each destination pixel represents a 2x2 source block. Drawing when that block
|
|
// contains ink preserves thin strokes that nearest-neighbor sampling can skip.
|
|
//
|
|
// The advance width is also halved in drawText() so layout reserves exactly the right
|
|
// horizontal space for the scaled glyph.
|
|
static void renderCharScaled(const GfxRenderer& renderer, GfxRenderer::RenderMode renderMode,
|
|
const EpdFontFamily& fontFamily, const uint32_t cp, int cursorX, int cursorY,
|
|
const bool pixelState, const EpdFontFamily::Style style) {
|
|
const EpdGlyph* glyph = fontFamily.getGlyph(cp, style);
|
|
if (!glyph) return;
|
|
|
|
const EpdFontData* fontData = fontFamily.getData(style);
|
|
const uint8_t* bitmap = renderer.getGlyphBitmap(fontData, glyph);
|
|
if (!bitmap) return;
|
|
|
|
const int srcW = glyph->width;
|
|
const int srcH = glyph->height;
|
|
const int dstW = (srcW + 1) / 2; // ceil so odd-width glyphs aren't clipped
|
|
const int dstH = (srcH + 1) / 2;
|
|
// Scale the glyph bearing by the same factor so the scaled glyph sits at the correct
|
|
// pixel offset from the (already-shifted) cursor position.
|
|
const int baseX = cursorX + glyph->left / 2;
|
|
const int baseY = cursorY - glyph->top / 2;
|
|
|
|
if (fontData->is2Bit) {
|
|
// 2-bit packed format: 4 pixels per byte, MSB first, 2 bits per pixel.
|
|
// raw value: 0=white, 1=light-gray, 2=dark-gray, 3=black.
|
|
for (int dstY = 0; dstY < dstH; dstY++) {
|
|
const int srcY = dstY * 2;
|
|
for (int dstX = 0; dstX < dstW; dstX++) {
|
|
const int srcX = dstX * 2;
|
|
uint8_t coverage = 0;
|
|
uint8_t maxRaw = 0;
|
|
for (int sampleY = 0; sampleY < 2 && srcY + sampleY < srcH; sampleY++) {
|
|
for (int sampleX = 0; sampleX < 2 && srcX + sampleX < srcW; sampleX++) {
|
|
const int pos = (srcY + sampleY) * srcW + srcX + sampleX;
|
|
const uint8_t byte = bitmap[pos >> 2];
|
|
const uint8_t raw = (byte >> ((3 - (pos & 3)) * 2)) & 0x3;
|
|
coverage += raw;
|
|
if (raw > maxRaw) maxRaw = raw;
|
|
}
|
|
}
|
|
if (maxRaw >= 2 || coverage >= 2) {
|
|
renderer.drawPixel(baseX + dstX, baseY + dstY, pixelState);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// 1-bit packed format: 8 pixels per byte, MSB first.
|
|
for (int dstY = 0; dstY < dstH; dstY++) {
|
|
const int srcY = dstY * 2;
|
|
for (int dstX = 0; dstX < dstW; dstX++) {
|
|
const int srcX = dstX * 2;
|
|
bool hasInk = false;
|
|
for (int sampleY = 0; sampleY < 2 && srcY + sampleY < srcH; sampleY++) {
|
|
for (int sampleX = 0; sampleX < 2 && srcX + sampleX < srcW; sampleX++) {
|
|
const int pos = (srcY + sampleY) * srcW + srcX + sampleX;
|
|
const uint8_t byte = bitmap[pos >> 3];
|
|
const uint8_t bit = 7 - (pos & 7);
|
|
if ((byte >> bit) & 1) {
|
|
hasInk = true;
|
|
}
|
|
}
|
|
}
|
|
if (hasInk) {
|
|
renderer.drawPixel(baseX + dstX, baseY + dstY, pixelState);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template <TextRotation rotation = TextRotation::None>
|
|
static void renderCharImpl(const GfxRenderer& renderer, GfxRenderer::RenderMode renderMode,
|
|
const EpdFontFamily& fontFamily, const uint32_t cp, int cursorX, int cursorY,
|
|
const bool pixelState, const EpdFontFamily::Style style) {
|
|
const EpdGlyph* glyph = fontFamily.getGlyph(cp, style);
|
|
if (!glyph) {
|
|
LOG_ERR("GFX", "No glyph for codepoint %d", cp);
|
|
return;
|
|
}
|
|
|
|
const EpdFontData* fontData = fontFamily.getData(style);
|
|
const bool is2Bit = fontData->is2Bit;
|
|
const uint8_t width = glyph->width;
|
|
const uint8_t height = glyph->height;
|
|
const int left = glyph->left;
|
|
const int top = glyph->top;
|
|
|
|
// Tiled-grayscale band culling: if this glyph's physical y-extent is entirely
|
|
// outside the active strip, skip it before the expensive bitmap decode. This
|
|
// is what makes per-band re-rendering cheap. No-op outside strip mode.
|
|
if constexpr (rotation == TextRotation::Rotated90CW) {
|
|
const int ob = cursorX + fontData->ascender - top;
|
|
const int ib = cursorY - left;
|
|
if (!renderer.glyphIntersectsStrip(ob, ib - (width - 1), ob + height - 1, ib)) {
|
|
return;
|
|
}
|
|
} else {
|
|
const int gx0 = cursorX + left;
|
|
const int gy0 = cursorY - top;
|
|
if (!renderer.glyphIntersectsStrip(gx0, gy0, gx0 + width - 1, gy0 + height - 1)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
const uint8_t* bitmap = renderer.getGlyphBitmap(fontData, glyph);
|
|
|
|
if (bitmap != nullptr) {
|
|
// For Normal: outer loop advances screenY, inner loop advances screenX
|
|
// For Rotated: outer loop advances screenX, inner loop advances screenY (in reverse)
|
|
int outerBase, innerBase;
|
|
if constexpr (rotation == TextRotation::Rotated90CW) {
|
|
outerBase = cursorX + fontData->ascender - top; // screenX = outerBase + glyphY
|
|
innerBase = cursorY - left; // screenY = innerBase - glyphX
|
|
} else {
|
|
outerBase = cursorY - top; // screenY = outerBase + glyphY
|
|
innerBase = cursorX + left; // screenX = innerBase + glyphX
|
|
}
|
|
|
|
if (is2Bit) {
|
|
int pixelPosition = 0;
|
|
for (int glyphY = 0; glyphY < height; glyphY++) {
|
|
const int outerCoord = outerBase + glyphY;
|
|
for (int glyphX = 0; glyphX < width; glyphX++, pixelPosition++) {
|
|
int screenX, screenY;
|
|
if constexpr (rotation == TextRotation::Rotated90CW) {
|
|
screenX = outerCoord;
|
|
screenY = innerBase - glyphX;
|
|
} else {
|
|
screenX = innerBase + glyphX;
|
|
screenY = outerCoord;
|
|
}
|
|
|
|
const uint8_t byte = bitmap[pixelPosition >> 2];
|
|
const uint8_t bit_index = (3 - (pixelPosition & 3)) * 2;
|
|
// the direct bit from the font is 0 -> white, 1 -> light gray, 2 -> dark gray, 3 -> black
|
|
// we swap this to better match the way images and screen think about colors:
|
|
// 0 -> black, 1 -> dark grey, 2 -> light grey, 3 -> white
|
|
const uint8_t bmpVal = 3 - ((byte >> bit_index) & 0x3);
|
|
|
|
if (renderMode == GfxRenderer::BW && bmpVal < 3) {
|
|
// Default: gray pixels paint solid black. Required when grayscale
|
|
// passes follow (their LUT lightens pixels it assumes were just
|
|
// driven solid black), and it is the plain non-AA look otherwise.
|
|
// Fast AA: partial (anti-aliased edge) coverage dithers with the
|
|
// same period-2 patterns as fillRectDither (dark grey = 50%
|
|
// checkerboard, light grey = 25%), approximating AA in a single
|
|
// BW pass. Skipped pixels leave the background untouched.
|
|
if (!renderer.isFastAntiAliasing() || bmpVal == 0 || (bmpVal == 1 && ((screenX + screenY) & 1) == 0) ||
|
|
(bmpVal == 2 && (screenX & 1) == 0 && (screenY & 1) == 0)) {
|
|
renderer.drawPixel(screenX, screenY, pixelState);
|
|
}
|
|
} else if (renderMode == GfxRenderer::GRAYSCALE_MSB && (bmpVal == 1 || bmpVal == 2)) {
|
|
// Light gray (also mark the MSB if it's going to be a dark gray too)
|
|
// Dedicated X3 gray LUTs now provide proper 4-level gray on both devices
|
|
// We have to flag pixels in reverse for the gray buffers, as 0 leave alone, 1 update
|
|
renderer.drawPixel(screenX, screenY, false);
|
|
} else if (renderMode == GfxRenderer::GRAYSCALE_LSB && bmpVal == 1) {
|
|
// Dark gray
|
|
renderer.drawPixel(screenX, screenY, false);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
int pixelPosition = 0;
|
|
for (int glyphY = 0; glyphY < height; glyphY++) {
|
|
const int outerCoord = outerBase + glyphY;
|
|
for (int glyphX = 0; glyphX < width; glyphX++, pixelPosition++) {
|
|
int screenX, screenY;
|
|
if constexpr (rotation == TextRotation::Rotated90CW) {
|
|
screenX = outerCoord;
|
|
screenY = innerBase - glyphX;
|
|
} else {
|
|
screenX = innerBase + glyphX;
|
|
screenY = outerCoord;
|
|
}
|
|
|
|
const uint8_t byte = bitmap[pixelPosition >> 3];
|
|
const uint8_t bit_index = 7 - (pixelPosition & 7);
|
|
|
|
if ((byte >> bit_index) & 1) {
|
|
renderer.drawPixel(screenX, screenY, pixelState);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// IMPORTANT: This function is in critical rendering path and is called for every pixel. Please keep it as simple and
|
|
// efficient as possible.
|
|
void GfxRenderer::drawPixel(const int x, const int y, const bool state) const {
|
|
int phyX = 0;
|
|
int phyY = 0;
|
|
|
|
// Note: this call should be inlined for better performance
|
|
rotateCoordinates(orientation, x, y, &phyX, &phyY, panelWidth, panelHeight);
|
|
|
|
// Bounds checking against runtime panel dimensions
|
|
if (phyX < 0 || phyX >= panelWidth || phyY < 0 || phyY >= panelHeight) {
|
|
LOG_ERR("GFX", "!! Outside range (%d, %d) -> (%d, %d)", x, y, phyX, phyY);
|
|
return;
|
|
}
|
|
|
|
// Tiled grayscale: redirect writes to the strip scratch and clip to the
|
|
// current band. Single predictable branch on the hot per-pixel path.
|
|
uint8_t* target = frameBuffer;
|
|
uint32_t rowY = static_cast<uint32_t>(phyY);
|
|
if (_stripActive) {
|
|
if (phyY < _stripY0 || phyY >= _stripY0 + _stripRows) {
|
|
return; // pixel outside the band currently being rendered
|
|
}
|
|
target = _stripBuf;
|
|
rowY = static_cast<uint32_t>(phyY - _stripY0);
|
|
}
|
|
|
|
// Calculate byte position and bit position
|
|
const uint32_t byteIndex = rowY * panelWidthBytes + (phyX / 8);
|
|
const uint8_t bitPosition = 7 - (phyX % 8); // MSB first
|
|
|
|
if (state) {
|
|
target[byteIndex] &= ~(1 << bitPosition); // Clear bit
|
|
} else {
|
|
target[byteIndex] |= 1 << bitPosition; // Set bit
|
|
}
|
|
}
|
|
|
|
int GfxRenderer::getTextWidth(const int fontId, const char* text, const EpdFontFamily::Style style,
|
|
const BidiUtils::BidiBaseDir baseDir) const {
|
|
if (text == nullptr || *text == '\0') {
|
|
return 0;
|
|
}
|
|
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
|
|
std::string visual;
|
|
const char* renderedText = resolveVisualText(text, visual, baseDir);
|
|
|
|
int w = 0, h = 0;
|
|
fontIt->second.getTextDimensions(renderedText, &w, &h, style);
|
|
return w;
|
|
}
|
|
|
|
void GfxRenderer::drawCenteredText(const int fontId, const int y, const char* text, const bool black,
|
|
const EpdFontFamily::Style style, const BidiUtils::BidiBaseDir baseDir) const {
|
|
const int x = (getScreenWidth() - getTextWidth(fontId, text, style, baseDir)) / 2;
|
|
drawText(fontId, x, y, text, black, style, baseDir);
|
|
}
|
|
|
|
void GfxRenderer::drawText(const int fontId, const int x, const int y, const char* text, const bool black,
|
|
const EpdFontFamily::Style style, const BidiUtils::BidiBaseDir baseDir) const {
|
|
// cannot draw a NULL / empty string
|
|
if (text == nullptr || *text == '\0') {
|
|
return;
|
|
}
|
|
|
|
std::string visual;
|
|
const char* renderedText = resolveVisualText(text, visual, baseDir);
|
|
|
|
const int yPos = y + getFontAscenderSize(fontId);
|
|
int lastBaseX = x;
|
|
int lastBaseLeft = 0;
|
|
int lastBaseWidth = 0;
|
|
int lastBaseTop = 0;
|
|
int32_t prevAdvanceFP = 0; // 12.4 fixed-point: prev glyph's advance + next kern for snap
|
|
|
|
if (fontCacheManager_ && fontCacheManager_->isScanning()) {
|
|
fontCacheManager_->recordText(renderedText, fontId, style);
|
|
return;
|
|
}
|
|
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return;
|
|
}
|
|
const auto& font = fontIt->second;
|
|
|
|
const char* textCursor = renderedText;
|
|
uint32_t cp;
|
|
uint32_t prevCp = 0;
|
|
while ((cp = utf8NextCodepoint(reinterpret_cast<const uint8_t**>(&textCursor)))) {
|
|
// Skip Hebrew Niqqud (vowel marks)
|
|
// Temporary: avoid adding Niqqud to built-in fonts. Remove when custom fonts are supported.
|
|
if (cp >= 0x0591 && cp <= 0x05C7) {
|
|
continue;
|
|
}
|
|
|
|
if (utf8IsCombiningMark(cp)) {
|
|
const EpdGlyph* combiningGlyph = font.getGlyph(cp, style);
|
|
if (!combiningGlyph) continue;
|
|
const int raiseBy = combiningMark::raiseAboveBase(combiningGlyph->top, combiningGlyph->height, lastBaseTop);
|
|
const int combiningX = combiningMark::centerOver(lastBaseX, lastBaseLeft, lastBaseWidth, combiningGlyph->left,
|
|
combiningGlyph->width);
|
|
renderCharImpl<TextRotation::None>(*this, renderMode, font, cp, combiningX, yPos - raiseBy, black, style);
|
|
continue;
|
|
}
|
|
|
|
cp = font.applyLigatures(cp, textCursor, style);
|
|
|
|
// Differential rounding: snap (previous advance + current kern) as one unit so
|
|
// identical character pairs always produce the same pixel step regardless of
|
|
// where they fall on the line.
|
|
if (prevCp != 0) {
|
|
const auto kernFP = font.getKerning(prevCp, cp, style); // 4.4 fixed-point kern
|
|
lastBaseX += fp4::toPixel(prevAdvanceFP + kernFP); // snap 12.4 fixed-point to nearest pixel
|
|
}
|
|
|
|
const EpdGlyph* glyph = font.getGlyph(cp, style);
|
|
|
|
lastBaseLeft = glyph ? glyph->left : 0;
|
|
lastBaseWidth = glyph ? glyph->width : 0;
|
|
lastBaseTop = glyph ? glyph->top : 0;
|
|
prevAdvanceFP = glyph ? glyph->advanceX : 0; // 12.4 fixed-point
|
|
|
|
const bool isSupSub = (style & (EpdFontFamily::SUP | EpdFontFamily::SUB)) != 0;
|
|
if (isSupSub) {
|
|
// Halve the advance so the cursor advances by the same amount the scaled glyph
|
|
// actually occupies, keeping spacing correct without needing a separate smaller font.
|
|
prevAdvanceFP = (prevAdvanceFP + 1) / 2;
|
|
}
|
|
|
|
if (isSupSub) {
|
|
// yPos already carries the vertical offset applied by TextBlock::render().
|
|
renderCharScaled(*this, renderMode, font, cp, lastBaseX, yPos, black, style);
|
|
} else {
|
|
renderCharImpl<TextRotation::None>(*this, renderMode, font, cp, lastBaseX, yPos, black, style);
|
|
}
|
|
prevCp = cp;
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
const char* resolveVisualText(const char* text, std::string& visualBuffer, const BidiUtils::BidiBaseDir baseDir) {
|
|
if (!text || *text == '\0') return text;
|
|
|
|
if (baseDir != BidiUtils::BidiBaseDir::RTL) {
|
|
// Byte-level scan: skip BiDi when no RTL script lead bytes are present.
|
|
// Hebrew UTF-8 lead bytes: 0xD6-0xD7; Arabic/Syriac: 0xD8-0xDB.
|
|
// This covers all RTL content without false negatives and avoids triggering
|
|
// the full UAX#9 algorithm for Latin-extended, em-dashes, accented text, etc.
|
|
bool hasRtlBytes = false;
|
|
for (const unsigned char* q = reinterpret_cast<const unsigned char*>(text); *q; ++q) {
|
|
if (*q >= 0xD6 && *q <= 0xDB) {
|
|
hasRtlBytes = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!hasRtlBytes) return text;
|
|
}
|
|
|
|
if (BidiUtils::applyBidiVisual(text, visualBuffer, static_cast<int>(baseDir)) && !visualBuffer.empty()) {
|
|
return visualBuffer.c_str();
|
|
}
|
|
return text;
|
|
}
|
|
} // namespace
|
|
|
|
void GfxRenderer::drawLine(int x1, int y1, int x2, int y2, const bool state) const {
|
|
if (fontCacheManager_ && fontCacheManager_->isScanning()) return;
|
|
if (x1 == x2) {
|
|
if (y2 < y1) {
|
|
std::swap(y1, y2);
|
|
}
|
|
for (int y = y1; y <= y2; y++) {
|
|
drawPixel(x1, y, state);
|
|
}
|
|
} else if (y1 == y2) {
|
|
if (x2 < x1) {
|
|
std::swap(x1, x2);
|
|
}
|
|
for (int x = x1; x <= x2; x++) {
|
|
drawPixel(x, y1, state);
|
|
}
|
|
} else {
|
|
// Bresenham's line algorithm — integer arithmetic only
|
|
int dx = x2 - x1;
|
|
int dy = y2 - y1;
|
|
int sx = (dx > 0) ? 1 : -1;
|
|
int sy = (dy > 0) ? 1 : -1;
|
|
dx = sx * dx; // abs
|
|
dy = sy * dy; // abs
|
|
|
|
int err = dx - dy;
|
|
while (true) {
|
|
drawPixel(x1, y1, state);
|
|
if (x1 == x2 && y1 == y2) break;
|
|
int e2 = 2 * err;
|
|
if (e2 > -dy) {
|
|
err -= dy;
|
|
x1 += sx;
|
|
}
|
|
if (e2 < dx) {
|
|
err += dx;
|
|
y1 += sy;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::drawLine(int x1, int y1, int x2, int y2, const int lineWidth, const bool state) const {
|
|
for (int i = 0; i < lineWidth; i++) {
|
|
drawLine(x1, y1 + i, x2, y2 + i, state);
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::drawRect(const int x, const int y, const int width, const int height, const bool state) const {
|
|
drawLine(x, y, x + width - 1, y, state);
|
|
drawLine(x + width - 1, y, x + width - 1, y + height - 1, state);
|
|
drawLine(x + width - 1, y + height - 1, x, y + height - 1, state);
|
|
drawLine(x, y, x, y + height - 1, state);
|
|
}
|
|
|
|
// Border is inside the rectangle
|
|
void GfxRenderer::drawRect(const int x, const int y, const int width, const int height, const int lineWidth,
|
|
const bool state) const {
|
|
for (int i = 0; i < lineWidth; i++) {
|
|
drawLine(x + i, y + i, x + width - i, y + i, state);
|
|
drawLine(x + width - i, y + i, x + width - i, y + height - i, state);
|
|
drawLine(x + width - i, y + height - i, x + i, y + height - i, state);
|
|
drawLine(x + i, y + height - i, x + i, y + i, state);
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::drawArc(const int maxRadius, const int cx, const int cy, const int xDir, const int yDir,
|
|
const int lineWidth, const bool state) const {
|
|
const int stroke = std::min(lineWidth, maxRadius);
|
|
const int innerRadius = std::max(maxRadius - stroke, 0);
|
|
const int outerRadius = maxRadius;
|
|
|
|
if (outerRadius <= 0) {
|
|
return;
|
|
}
|
|
|
|
const int outerRadiusSq = outerRadius * outerRadius;
|
|
const int innerRadiusSq = innerRadius * innerRadius;
|
|
|
|
int xOuter = outerRadius;
|
|
int xInner = innerRadius;
|
|
|
|
for (int dy = 0; dy <= outerRadius; ++dy) {
|
|
while (xOuter > 0 && (xOuter * xOuter + dy * dy) > outerRadiusSq) {
|
|
--xOuter;
|
|
}
|
|
// Keep the smallest x that still lies outside/at the inner radius,
|
|
// i.e. (x^2 + y^2) >= innerRadiusSq.
|
|
while (xInner > 0 && ((xInner - 1) * (xInner - 1) + dy * dy) >= innerRadiusSq) {
|
|
--xInner;
|
|
}
|
|
|
|
if (xOuter < xInner) {
|
|
continue;
|
|
}
|
|
|
|
const int x0 = cx + xDir * xInner;
|
|
const int x1 = cx + xDir * xOuter;
|
|
const int left = std::min(x0, x1);
|
|
const int width = std::abs(x1 - x0) + 1;
|
|
const int py = cy + yDir * dy;
|
|
|
|
if (width > 0) {
|
|
fillRect(left, py, width, 1, state);
|
|
}
|
|
}
|
|
};
|
|
|
|
// Border is inside the rectangle, rounded corners
|
|
void GfxRenderer::drawRoundedRect(const int x, const int y, const int width, const int height, const int lineWidth,
|
|
const int cornerRadius, bool state) const {
|
|
drawRoundedRect(x, y, width, height, lineWidth, cornerRadius, true, true, true, true, state);
|
|
}
|
|
|
|
// Border is inside the rectangle, rounded corners
|
|
void GfxRenderer::drawRoundedRect(const int x, const int y, const int width, const int height, const int lineWidth,
|
|
const int cornerRadius, bool roundTopLeft, bool roundTopRight, bool roundBottomLeft,
|
|
bool roundBottomRight, bool state) const {
|
|
if (lineWidth <= 0 || width <= 0 || height <= 0) {
|
|
return;
|
|
}
|
|
|
|
const int maxRadius = std::min({cornerRadius, width / 2, height / 2});
|
|
if (maxRadius <= 0) {
|
|
drawRect(x, y, width, height, lineWidth, state);
|
|
return;
|
|
}
|
|
|
|
const int stroke = std::min(lineWidth, maxRadius);
|
|
const int right = x + width - 1;
|
|
const int bottom = y + height - 1;
|
|
|
|
const int horizontalWidth = width - 2 * maxRadius;
|
|
if (horizontalWidth > 0) {
|
|
if (roundTopLeft || roundTopRight) {
|
|
fillRect(x + maxRadius, y, horizontalWidth, stroke, state);
|
|
}
|
|
if (roundBottomLeft || roundBottomRight) {
|
|
fillRect(x + maxRadius, bottom - stroke + 1, horizontalWidth, stroke, state);
|
|
}
|
|
}
|
|
|
|
const int verticalHeight = height - 2 * maxRadius;
|
|
if (verticalHeight > 0) {
|
|
if (roundTopLeft || roundBottomLeft) {
|
|
fillRect(x, y + maxRadius, stroke, verticalHeight, state);
|
|
}
|
|
if (roundTopRight || roundBottomRight) {
|
|
fillRect(right - stroke + 1, y + maxRadius, stroke, verticalHeight, state);
|
|
}
|
|
}
|
|
|
|
if (roundTopLeft) {
|
|
drawArc(maxRadius, x + maxRadius, y + maxRadius, -1, -1, lineWidth, state);
|
|
}
|
|
if (roundTopRight) {
|
|
drawArc(maxRadius, right - maxRadius, y + maxRadius, 1, -1, lineWidth, state);
|
|
}
|
|
if (roundBottomRight) {
|
|
drawArc(maxRadius, right - maxRadius, bottom - maxRadius, 1, 1, lineWidth, state);
|
|
}
|
|
if (roundBottomLeft) {
|
|
drawArc(maxRadius, x + maxRadius, bottom - maxRadius, -1, 1, lineWidth, state);
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::fillRect(const int x, const int y, const int width, const int height, const bool state) const {
|
|
if (state) {
|
|
fillRectImpl<Color::Black>(x, y, width, height);
|
|
} else {
|
|
fillRectImpl<Color::White>(x, y, width, height);
|
|
}
|
|
}
|
|
|
|
// NOTE: Those are in critical path, and need to be templated to avoid runtime checks for every pixel.
|
|
// Any branching must be done outside the loops to avoid performance degradation.
|
|
template <>
|
|
void GfxRenderer::drawPixelDither<Color::Clear>(const int x, const int y) const {
|
|
// Do nothing
|
|
}
|
|
|
|
template <>
|
|
void GfxRenderer::drawPixelDither<Color::Black>(const int x, const int y) const {
|
|
drawPixel(x, y, true);
|
|
}
|
|
|
|
template <>
|
|
void GfxRenderer::drawPixelDither<Color::White>(const int x, const int y) const {
|
|
drawPixel(x, y, false);
|
|
}
|
|
|
|
template <>
|
|
void GfxRenderer::drawPixelDither<Color::LightGray>(const int x, const int y) const {
|
|
drawPixel(x, y, x % 2 == 0 && y % 2 == 0);
|
|
}
|
|
|
|
template <>
|
|
void GfxRenderer::drawPixelDither<Color::DarkGray>(const int x, const int y) const {
|
|
drawPixel(x, y, (x + y) % 2 == 0); // TODO: maybe find a better pattern?
|
|
}
|
|
|
|
void GfxRenderer::fillRectDither(const int x, const int y, const int width, const int height, Color color) const {
|
|
switch (color) {
|
|
case Color::Clear:
|
|
break;
|
|
case Color::Black:
|
|
fillRectImpl<Color::Black>(x, y, width, height);
|
|
break;
|
|
case Color::White:
|
|
fillRectImpl<Color::White>(x, y, width, height);
|
|
break;
|
|
case Color::LightGray:
|
|
fillRectImpl<Color::LightGray>(x, y, width, height);
|
|
break;
|
|
case Color::DarkGray:
|
|
fillRectImpl<Color::DarkGray>(x, y, width, height);
|
|
break;
|
|
}
|
|
}
|
|
|
|
template <Color C>
|
|
void GfxRenderer::fillRectImpl(const int x, const int y, const int width, const int height) const {
|
|
if constexpr (C == Color::Clear) return;
|
|
if (width <= 0 || height <= 0) return;
|
|
if (fontCacheManager_ && fontCacheManager_->isScanning()) return;
|
|
|
|
// Clip in logical space.
|
|
const int screenW = getScreenWidth();
|
|
const int screenH = getScreenHeight();
|
|
const int lx0 = std::max(0, x);
|
|
const int ly0 = std::max(0, y);
|
|
const int lx1 = std::min(screenW, x + width);
|
|
const int ly1 = std::min(screenH, y + height);
|
|
if (lx0 >= lx1 || ly0 >= ly1) return;
|
|
|
|
// Rotate the two opposing logical corners into physical-framebuffer space.
|
|
// The bounding rect in physical space is the rect we need to fill — rotation
|
|
// is rigid (no shear/stretch) so the bbox of the two corners IS the rect.
|
|
int paX, paY, pbX, pbY;
|
|
rotateCoordinates(orientation, lx0, ly0, &paX, &paY, panelWidth, panelHeight);
|
|
rotateCoordinates(orientation, lx1 - 1, ly1 - 1, &pbX, &pbY, panelWidth, panelHeight);
|
|
|
|
const int phyX0 = std::min(paX, pbX);
|
|
const int phyX1 = std::max(paX, pbX); // inclusive
|
|
int phyY0 = std::min(paY, pbY);
|
|
int phyY1 = std::max(paY, pbY);
|
|
|
|
// Strip mode: clip Y range to the active band and redirect writes.
|
|
uint8_t* target = getWriteTarget();
|
|
const int originY = getWriteOriginY();
|
|
const int writeRows = getWriteRows();
|
|
phyY0 = std::max(phyY0, originY);
|
|
phyY1 = std::min(phyY1, originY + writeRows - 1);
|
|
if (phyY0 > phyY1) return;
|
|
|
|
// Bit/byte layout: MSB-first within a byte, so phyX → bit (7 - (phyX & 7)).
|
|
// Head and tail masks cover only the in-rect bits of the first/last byte.
|
|
const int byteStart = phyX0 >> 3;
|
|
const int byteEnd = phyX1 >> 3; // inclusive
|
|
const uint8_t headMask = static_cast<uint8_t>(0xFFu >> (phyX0 & 7));
|
|
const uint8_t tailMask = static_cast<uint8_t>(0xFFu << (7 - (phyX1 & 7)));
|
|
const int32_t panelStride = static_cast<int32_t>(panelWidthBytes);
|
|
|
|
if constexpr (C == Color::Black || C == Color::White) {
|
|
// Solid fill. Framebuffer: 0 = black, 1 = white.
|
|
const uint8_t fillByte = (C == Color::Black) ? 0x00u : 0xFFu;
|
|
for (int py = phyY0; py <= phyY1; ++py) {
|
|
uint8_t* row = target + static_cast<int32_t>(py - originY) * panelStride;
|
|
if (byteStart == byteEnd) {
|
|
const uint8_t mask = headMask & tailMask;
|
|
if constexpr (C == Color::Black) {
|
|
row[byteStart] &= static_cast<uint8_t>(~mask);
|
|
} else {
|
|
row[byteStart] |= mask;
|
|
}
|
|
} else {
|
|
if constexpr (C == Color::Black) {
|
|
row[byteStart] &= static_cast<uint8_t>(~headMask);
|
|
if (byteEnd > byteStart + 1) {
|
|
memset(row + byteStart + 1, fillByte, byteEnd - byteStart - 1);
|
|
}
|
|
row[byteEnd] &= static_cast<uint8_t>(~tailMask);
|
|
} else {
|
|
row[byteStart] |= headMask;
|
|
if (byteEnd > byteStart + 1) {
|
|
memset(row + byteStart + 1, fillByte, byteEnd - byteStart - 1);
|
|
}
|
|
row[byteEnd] |= tailMask;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// Dither (LightGray / DarkGray). Both patterns have period 2 in logical
|
|
// (x, y), so per physical row we precompute one byte that represents the
|
|
// pattern across an 8-pixel stretch — every full byte in the row uses
|
|
// that same value.
|
|
//
|
|
// dlxPerPhyX / dlyPerPhyX: how logical (x, y) change as phyX increments
|
|
// along a physical row. Derived from inverting rotateCoordinates.
|
|
int dlxPerPhyX = 0, dlyPerPhyX = 0;
|
|
switch (orientation) {
|
|
case Portrait:
|
|
dlxPerPhyX = 0;
|
|
dlyPerPhyX = 1;
|
|
break;
|
|
case PortraitInverted:
|
|
dlxPerPhyX = 0;
|
|
dlyPerPhyX = -1;
|
|
break;
|
|
case LandscapeClockwise:
|
|
dlxPerPhyX = -1;
|
|
dlyPerPhyX = 0;
|
|
break;
|
|
case LandscapeCounterClockwise:
|
|
dlxPerPhyX = 1;
|
|
dlyPerPhyX = 0;
|
|
break;
|
|
}
|
|
|
|
// The dither pattern has period 2 in logical space, and each orientation
|
|
// maps py to logical coords with a fixed parity relationship. The
|
|
// blackMask byte therefore repeats with period 2 in py. Precompute both
|
|
// variants outside the row loop to eliminate the per-row switch + 8-bit
|
|
// construction loop.
|
|
uint8_t blackMasks[2];
|
|
for (int parityIdx = 0; parityIdx < 2; ++parityIdx) {
|
|
const int samplePy = phyY0 + parityIdx;
|
|
int lxBase = 0, lyBase = 0;
|
|
switch (orientation) {
|
|
case Portrait:
|
|
lxBase = panelHeight - 1 - samplePy;
|
|
lyBase = byteStart * 8;
|
|
break;
|
|
case PortraitInverted:
|
|
lxBase = samplePy;
|
|
lyBase = panelWidth - 1 - byteStart * 8;
|
|
break;
|
|
case LandscapeClockwise:
|
|
lxBase = panelWidth - 1 - byteStart * 8;
|
|
lyBase = panelHeight - 1 - samplePy;
|
|
break;
|
|
case LandscapeCounterClockwise:
|
|
lxBase = byteStart * 8;
|
|
lyBase = samplePy;
|
|
break;
|
|
}
|
|
uint8_t mask = 0;
|
|
for (int b = 0; b < 8; ++b) {
|
|
const int lx = lxBase + b * dlxPerPhyX;
|
|
const int ly = lyBase + b * dlyPerPhyX;
|
|
bool isBlack;
|
|
if constexpr (C == Color::LightGray) {
|
|
isBlack = ((lx & 1) == 0) && ((ly & 1) == 0);
|
|
} else { // DarkGray
|
|
isBlack = (((lx + ly) & 1) == 0);
|
|
}
|
|
if (isBlack) mask |= static_cast<uint8_t>(1u << (7 - b));
|
|
}
|
|
blackMasks[samplePy & 1] = mask;
|
|
}
|
|
|
|
for (int py = phyY0; py <= phyY1; ++py) {
|
|
const uint8_t blackMask = blackMasks[py & 1];
|
|
const uint8_t whiteMask = static_cast<uint8_t>(~blackMask);
|
|
|
|
// Dither writes BOTH inks (the slow path called drawPixel for every
|
|
// pixel — setting or clearing — so we must do the same). Inside the
|
|
// rect mask: write whiteMask (1s where white, 0s where black). Outside
|
|
// the rect mask: leave the framebuffer untouched.
|
|
uint8_t* row = target + static_cast<int32_t>(py - originY) * panelStride;
|
|
if (byteStart == byteEnd) {
|
|
const uint8_t rectMask = headMask & tailMask;
|
|
row[byteStart] = static_cast<uint8_t>((row[byteStart] & ~rectMask) | (rectMask & whiteMask));
|
|
} else {
|
|
row[byteStart] = static_cast<uint8_t>((row[byteStart] & ~headMask) | (headMask & whiteMask));
|
|
if (byteEnd > byteStart + 1) {
|
|
// Period 2, so every full byte in this row is exactly whiteMask.
|
|
memset(row + byteStart + 1, whiteMask, byteEnd - byteStart - 1);
|
|
}
|
|
row[byteEnd] = static_cast<uint8_t>((row[byteEnd] & ~tailMask) | (tailMask & whiteMask));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template void GfxRenderer::fillRectImpl<Color::Black>(int, int, int, int) const;
|
|
template void GfxRenderer::fillRectImpl<Color::White>(int, int, int, int) const;
|
|
template void GfxRenderer::fillRectImpl<Color::LightGray>(int, int, int, int) const;
|
|
template void GfxRenderer::fillRectImpl<Color::DarkGray>(int, int, int, int) const;
|
|
|
|
void GfxRenderer::maskRoundedRectOutsideCorners(const int x, const int y, const int width, const int height,
|
|
const int radius, const Color color) const {
|
|
if (radius <= 0 || color == Color::Clear) {
|
|
return;
|
|
}
|
|
|
|
const int rr = radius - 1;
|
|
const int rr2 = rr * rr;
|
|
for (int dy = 0; dy < radius; dy++) {
|
|
for (int dx = 0; dx < radius; dx++) {
|
|
const int tx = rr - dx;
|
|
const int ty = rr - dy;
|
|
if (tx * tx + ty * ty > rr2) {
|
|
if (color == Color::White || color == Color::Black) {
|
|
bool state = color == Color::Black;
|
|
drawPixel(x + dx, y + dy, state); // top-left
|
|
drawPixel(x + width - 1 - dx, y + dy, state); // top-right
|
|
drawPixel(x + dx, y + height - 1 - dy, state); // bottom-left
|
|
drawPixel(x + width - 1 - dx, y + height - 1 - dy, state); // bottom-right
|
|
} else if (color == Color::LightGray) {
|
|
drawPixelDither<Color::LightGray>(x + dx, y + dy); // top-left
|
|
drawPixelDither<Color::LightGray>(x + width - 1 - dx, y + dy); // top-right
|
|
drawPixelDither<Color::LightGray>(x + dx, y + height - 1 - dy); // bottom-left
|
|
drawPixelDither<Color::LightGray>(x + width - 1 - dx, y + height - 1 - dy); // bottom-right
|
|
} else if (color == Color::DarkGray) {
|
|
drawPixelDither<Color::DarkGray>(x + dx, y + dy); // top-left
|
|
drawPixelDither<Color::DarkGray>(x + width - 1 - dx, y + dy); // top-right
|
|
drawPixelDither<Color::DarkGray>(x + dx, y + height - 1 - dy); // bottom-left
|
|
drawPixelDither<Color::DarkGray>(x + width - 1 - dx, y + height - 1 - dy); // bottom-right
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template <Color color>
|
|
void GfxRenderer::fillArc(const int maxRadius, const int cx, const int cy, const int xDir, const int yDir) const {
|
|
if (maxRadius <= 0) return;
|
|
|
|
if constexpr (color == Color::Clear) {
|
|
return;
|
|
}
|
|
|
|
const int radiusSq = maxRadius * maxRadius;
|
|
|
|
// Avoid sqrt by scanning from outer radius inward while y grows.
|
|
int x = maxRadius;
|
|
for (int dy = 0; dy <= maxRadius; ++dy) {
|
|
while (x > 0 && (x * x + dy * dy) > radiusSq) {
|
|
--x;
|
|
}
|
|
if (x < 0) break;
|
|
|
|
const int py = cy + yDir * dy;
|
|
if (py < 0 || py >= getScreenHeight()) continue;
|
|
|
|
int x0 = cx;
|
|
int x1 = cx + xDir * x;
|
|
if (x0 > x1) std::swap(x0, x1);
|
|
const int width = x1 - x0 + 1;
|
|
|
|
if (width <= 0) continue;
|
|
|
|
if constexpr (color == Color::Black) {
|
|
fillRect(x0, py, width, 1, true);
|
|
} else if constexpr (color == Color::White) {
|
|
fillRect(x0, py, width, 1, false);
|
|
} else {
|
|
// LightGray / DarkGray: use existing dithered fill path.
|
|
fillRectDither(x0, py, width, 1, color);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::fillRoundedRect(const int x, const int y, const int width, const int height, const int cornerRadius,
|
|
const Color color) const {
|
|
fillRoundedRect(x, y, width, height, cornerRadius, true, true, true, true, color);
|
|
}
|
|
|
|
void GfxRenderer::fillRoundedRect(const int x, const int y, const int width, const int height, const int cornerRadius,
|
|
bool roundTopLeft, bool roundTopRight, bool roundBottomLeft, bool roundBottomRight,
|
|
const Color color) const {
|
|
if (width <= 0 || height <= 0) {
|
|
return;
|
|
}
|
|
|
|
// Assume if we're not rounding all corners then we are only rounding one side
|
|
const int roundedSides = (!roundTopLeft || !roundTopRight || !roundBottomLeft || !roundBottomRight) ? 1 : 2;
|
|
const int maxRadius = std::min({cornerRadius, width / roundedSides, height / roundedSides});
|
|
if (maxRadius <= 0) {
|
|
fillRectDither(x, y, width, height, color);
|
|
return;
|
|
}
|
|
|
|
const int horizontalWidth = width - 2 * maxRadius;
|
|
if (horizontalWidth > 0) {
|
|
fillRectDither(x + maxRadius + 1, y, horizontalWidth - 2, height, color);
|
|
}
|
|
|
|
const int leftFillTop = y + (roundTopLeft ? (maxRadius + 1) : 0);
|
|
const int leftFillBottom = y + height - 1 - (roundBottomLeft ? (maxRadius + 1) : 0);
|
|
if (leftFillBottom >= leftFillTop) {
|
|
fillRectDither(x, leftFillTop, maxRadius + 1, leftFillBottom - leftFillTop + 1, color);
|
|
}
|
|
|
|
const int rightFillTop = y + (roundTopRight ? (maxRadius + 1) : 0);
|
|
const int rightFillBottom = y + height - 1 - (roundBottomRight ? (maxRadius + 1) : 0);
|
|
if (rightFillBottom >= rightFillTop) {
|
|
fillRectDither(x + width - maxRadius - 1, rightFillTop, maxRadius + 1, rightFillBottom - rightFillTop + 1, color);
|
|
}
|
|
|
|
auto fillArcTemplated = [this](int maxRadius, int cx, int cy, int xDir, int yDir, Color color) {
|
|
switch (color) {
|
|
case Color::Clear:
|
|
break;
|
|
case Color::Black:
|
|
fillArc<Color::Black>(maxRadius, cx, cy, xDir, yDir);
|
|
break;
|
|
case Color::White:
|
|
fillArc<Color::White>(maxRadius, cx, cy, xDir, yDir);
|
|
break;
|
|
case Color::LightGray:
|
|
fillArc<Color::LightGray>(maxRadius, cx, cy, xDir, yDir);
|
|
break;
|
|
case Color::DarkGray:
|
|
fillArc<Color::DarkGray>(maxRadius, cx, cy, xDir, yDir);
|
|
break;
|
|
}
|
|
};
|
|
|
|
if (roundTopLeft) {
|
|
fillArcTemplated(maxRadius, x + maxRadius, y + maxRadius, -1, -1, color);
|
|
}
|
|
|
|
if (roundTopRight) {
|
|
fillArcTemplated(maxRadius, x + width - maxRadius - 1, y + maxRadius, 1, -1, color);
|
|
}
|
|
|
|
if (roundBottomRight) {
|
|
fillArcTemplated(maxRadius, x + width - maxRadius - 1, y + height - maxRadius - 1, 1, 1, color);
|
|
}
|
|
|
|
if (roundBottomLeft) {
|
|
fillArcTemplated(maxRadius, x + maxRadius, y + height - maxRadius - 1, -1, 1, color);
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::drawImage(const uint8_t bitmap[], const int x, const int y, const int width, const int height) const {
|
|
int rotatedX = 0;
|
|
int rotatedY = 0;
|
|
rotateCoordinates(orientation, x, y, &rotatedX, &rotatedY, panelWidth, panelHeight);
|
|
// Rotate origin corner
|
|
switch (orientation) {
|
|
case Portrait:
|
|
rotatedY = rotatedY - height;
|
|
break;
|
|
case PortraitInverted:
|
|
rotatedX = rotatedX - width;
|
|
break;
|
|
case LandscapeClockwise:
|
|
rotatedY = rotatedY - height;
|
|
rotatedX = rotatedX - width;
|
|
break;
|
|
case LandscapeCounterClockwise:
|
|
break;
|
|
}
|
|
// TODO: Rotate bits
|
|
display.drawImage(bitmap, rotatedX, rotatedY, width, height);
|
|
}
|
|
|
|
void GfxRenderer::drawIcon(const uint8_t bitmap[], const int x, const int y, const int size) const {
|
|
// Plot the icon pixel-by-pixel through drawPixel (which applies the orientation
|
|
// transform) instead of the byte-aligned framebuffer blit. The blit snaps the
|
|
// icon's position to 8px (one byte) along the rotated axis, which prevents it
|
|
// from aligning with adjacent text; per-pixel plotting is pixel-precise.
|
|
// Icons are square and 1bpp (MSB-first, bit==0 = ink). The (size-1-row, col)
|
|
// mapping reproduces the Portrait orientation the blit produced; drawIcon is
|
|
// only called by the UI themes, which all render in forced Portrait.
|
|
const int rowBytes = (size + 7) / 8;
|
|
for (int row = 0; row < size; row++) {
|
|
for (int col = 0; col < size; col++) {
|
|
const uint8_t byte = bitmap[row * rowBytes + (col >> 3)];
|
|
const bool ink = ((byte >> (7 - (col & 7))) & 1) == 0;
|
|
if (ink) {
|
|
drawPixel(x + (size - 1 - row), y + col, true);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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 {
|
|
if (fontCacheManager_ && fontCacheManager_->isScanning()) return;
|
|
// For 1-bit bitmaps, use optimized 1-bit rendering path (no crop support for 1-bit)
|
|
if (bitmap.is1Bit() && cropX == 0.0f && cropY == 0.0f) {
|
|
drawBitmap1Bit(bitmap, x, y, maxWidth, maxHeight);
|
|
return;
|
|
}
|
|
|
|
float scale = 1.0f;
|
|
bool isScaled = false;
|
|
int cropPixX = std::floor(bitmap.getWidth() * cropX / 2.0f);
|
|
int cropPixY = std::floor(bitmap.getHeight() * cropY / 2.0f);
|
|
LOG_DBG("GFX", "Cropping %dx%d by %dx%d pix, is %s", bitmap.getWidth(), bitmap.getHeight(), cropPixX, cropPixY,
|
|
bitmap.isTopDown() ? "top-down" : "bottom-up");
|
|
|
|
const float croppedWidth = (1.0f - cropX) * static_cast<float>(bitmap.getWidth());
|
|
const float croppedHeight = (1.0f - cropY) * static_cast<float>(bitmap.getHeight());
|
|
bool hasTargetBounds = false;
|
|
float fitScale = 1.0f;
|
|
|
|
if (maxWidth > 0 && croppedWidth > 0.0f) {
|
|
fitScale = static_cast<float>(maxWidth) / croppedWidth;
|
|
hasTargetBounds = true;
|
|
}
|
|
|
|
if (maxHeight > 0 && croppedHeight > 0.0f) {
|
|
const float heightScale = static_cast<float>(maxHeight) / croppedHeight;
|
|
fitScale = hasTargetBounds ? std::min(fitScale, heightScale) : heightScale;
|
|
hasTargetBounds = true;
|
|
}
|
|
|
|
if (hasTargetBounds && fitScale < 1.0f) {
|
|
scale = fitScale;
|
|
isScaled = true;
|
|
}
|
|
LOG_DBG("GFX", "Scaling by %f - %s", scale, isScaled ? "scaled" : "not scaled");
|
|
|
|
// Calculate output row size (2 bits per pixel, packed into bytes)
|
|
// IMPORTANT: Use int, not uint8_t, to avoid overflow for images > 1020 pixels wide
|
|
const int outputRowSize = (bitmap.getWidth() + 3) / 4;
|
|
auto* outputRow = static_cast<uint8_t*>(malloc(outputRowSize));
|
|
auto* rowBytes = static_cast<uint8_t*>(malloc(bitmap.getRowBytes()));
|
|
|
|
if (!outputRow || !rowBytes) {
|
|
LOG_ERR("GFX", "!! Failed to allocate BMP row buffers");
|
|
free(outputRow);
|
|
free(rowBytes);
|
|
return;
|
|
}
|
|
|
|
for (int bmpY = 0; bmpY < (bitmap.getHeight() - cropPixY); bmpY++) {
|
|
// The BMP's (0, 0) is the bottom-left corner (if the height is positive, top-left if negative).
|
|
// Screen's (0, 0) is the top-left corner.
|
|
int screenY = -cropPixY + (bitmap.isTopDown() ? bmpY : bitmap.getHeight() - 1 - bmpY);
|
|
if (isScaled) {
|
|
screenY = std::floor(screenY * scale);
|
|
}
|
|
screenY += y; // the offset should not be scaled
|
|
if (screenY >= getScreenHeight()) {
|
|
break;
|
|
}
|
|
|
|
if (bitmap.readNextRow(outputRow, rowBytes) != BmpReaderError::Ok) {
|
|
LOG_ERR("GFX", "Failed to read row %d from bitmap", bmpY);
|
|
free(outputRow);
|
|
free(rowBytes);
|
|
return;
|
|
}
|
|
|
|
if (screenY < 0) {
|
|
continue;
|
|
}
|
|
|
|
if (bmpY < cropPixY) {
|
|
// Skip the row if it's outside the crop area
|
|
continue;
|
|
}
|
|
|
|
for (int bmpX = cropPixX; bmpX < bitmap.getWidth() - cropPixX; bmpX++) {
|
|
int screenX = bmpX - cropPixX;
|
|
if (isScaled) {
|
|
screenX = std::floor(screenX * scale);
|
|
}
|
|
screenX += x; // the offset should not be scaled
|
|
if (screenX >= getScreenWidth()) {
|
|
break;
|
|
}
|
|
if (screenX < 0) {
|
|
continue;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
free(outputRow);
|
|
free(rowBytes);
|
|
}
|
|
|
|
void GfxRenderer::drawBitmap1Bit(const Bitmap& bitmap, const int x, const int y, const int maxWidth,
|
|
const int maxHeight) const {
|
|
float scale = 1.0f;
|
|
bool isScaled = false;
|
|
if (maxWidth > 0 && bitmap.getWidth() > maxWidth) {
|
|
scale = static_cast<float>(maxWidth) / static_cast<float>(bitmap.getWidth());
|
|
isScaled = true;
|
|
}
|
|
if (maxHeight > 0 && bitmap.getHeight() > maxHeight) {
|
|
scale = std::min(scale, static_cast<float>(maxHeight) / static_cast<float>(bitmap.getHeight()));
|
|
isScaled = true;
|
|
}
|
|
|
|
// For 1-bit BMP, output is still 2-bit packed (for consistency with readNextRow)
|
|
const int outputRowSize = (bitmap.getWidth() + 3) / 4;
|
|
auto* outputRow = static_cast<uint8_t*>(malloc(outputRowSize));
|
|
auto* rowBytes = static_cast<uint8_t*>(malloc(bitmap.getRowBytes()));
|
|
|
|
if (!outputRow || !rowBytes) {
|
|
LOG_ERR("GFX", "!! Failed to allocate 1-bit BMP row buffers");
|
|
free(outputRow);
|
|
free(rowBytes);
|
|
return;
|
|
}
|
|
|
|
for (int bmpY = 0; bmpY < bitmap.getHeight(); bmpY++) {
|
|
// Read rows sequentially using readNextRow
|
|
if (bitmap.readNextRow(outputRow, rowBytes) != BmpReaderError::Ok) {
|
|
LOG_ERR("GFX", "Failed to read row %d from 1-bit bitmap", bmpY);
|
|
free(outputRow);
|
|
free(rowBytes);
|
|
return;
|
|
}
|
|
|
|
// Calculate screen Y based on whether BMP is top-down or bottom-up
|
|
const int bmpYOffset = bitmap.isTopDown() ? bmpY : bitmap.getHeight() - 1 - bmpY;
|
|
int screenY = y + (isScaled ? static_cast<int>(std::floor(bmpYOffset * scale)) : bmpYOffset);
|
|
if (screenY >= getScreenHeight()) {
|
|
continue; // Continue reading to keep row counter in sync
|
|
}
|
|
if (screenY < 0) {
|
|
continue;
|
|
}
|
|
|
|
for (int bmpX = 0; bmpX < bitmap.getWidth(); bmpX++) {
|
|
int screenX = x + (isScaled ? static_cast<int>(std::floor(bmpX * scale)) : bmpX);
|
|
if (screenX >= getScreenWidth()) {
|
|
break;
|
|
}
|
|
if (screenX < 0) {
|
|
continue;
|
|
}
|
|
|
|
// Get 2-bit value (result of readNextRow quantization)
|
|
const uint8_t val = outputRow[bmpX / 4] >> (6 - ((bmpX * 2) % 8)) & 0x3;
|
|
|
|
// For 1-bit source: 0 or 1 -> map to black (0,1,2) or white (3)
|
|
// val < 3 means black pixel (draw it)
|
|
if (val < 3) {
|
|
drawPixel(screenX, screenY, true);
|
|
}
|
|
// White pixels (val == 3) are not drawn (leave background)
|
|
}
|
|
}
|
|
|
|
free(outputRow);
|
|
free(rowBytes);
|
|
}
|
|
|
|
void GfxRenderer::fillPolygon(const int* xPoints, const int* yPoints, int numPoints, bool state) const {
|
|
if (numPoints < 3) return;
|
|
|
|
// Find bounding box
|
|
int minY = yPoints[0], maxY = yPoints[0];
|
|
for (int i = 1; i < numPoints; i++) {
|
|
if (yPoints[i] < minY) minY = yPoints[i];
|
|
if (yPoints[i] > maxY) maxY = yPoints[i];
|
|
}
|
|
|
|
// Clip to screen
|
|
if (minY < 0) minY = 0;
|
|
if (maxY >= getScreenHeight()) maxY = getScreenHeight() - 1;
|
|
|
|
// Allocate node buffer for scanline algorithm
|
|
auto* nodeX = static_cast<int*>(malloc(numPoints * sizeof(int)));
|
|
if (!nodeX) {
|
|
LOG_ERR("GFX", "!! Failed to allocate polygon node buffer");
|
|
return;
|
|
}
|
|
|
|
// Scanline fill algorithm
|
|
for (int scanY = minY; scanY <= maxY; scanY++) {
|
|
int nodes = 0;
|
|
|
|
// Find all intersection points with edges
|
|
int j = numPoints - 1;
|
|
for (int i = 0; i < numPoints; i++) {
|
|
if ((yPoints[i] < scanY && yPoints[j] >= scanY) || (yPoints[j] < scanY && yPoints[i] >= scanY)) {
|
|
// Calculate X intersection using fixed-point to avoid float
|
|
int dy = yPoints[j] - yPoints[i];
|
|
if (dy != 0) {
|
|
nodeX[nodes++] = xPoints[i] + (scanY - yPoints[i]) * (xPoints[j] - xPoints[i]) / dy;
|
|
}
|
|
}
|
|
j = i;
|
|
}
|
|
|
|
// Sort nodes by X
|
|
std::sort(nodeX, nodeX + nodes);
|
|
|
|
// Fill between pairs of nodes
|
|
for (int i = 0; i < nodes - 1; i += 2) {
|
|
int startX = nodeX[i];
|
|
int endX = nodeX[i + 1];
|
|
|
|
// Clip to screen
|
|
if (startX < 0) startX = 0;
|
|
if (endX >= getScreenWidth()) endX = getScreenWidth() - 1;
|
|
|
|
// Draw horizontal line
|
|
for (int x = startX; x <= endX; x++) {
|
|
drawPixel(x, scanY, state);
|
|
}
|
|
}
|
|
}
|
|
|
|
free(nodeX);
|
|
}
|
|
|
|
// For performance measurement (using static to allow "const" methods)
|
|
static unsigned long start_ms = 0;
|
|
|
|
void GfxRenderer::clearScreen(const uint8_t color) const {
|
|
start_ms = millis();
|
|
if (_stripActive) {
|
|
// Clear only the active band's scratch, not the shared framebuffer.
|
|
memset(_stripBuf, color, static_cast<size_t>(panelWidthBytes) * _stripRows);
|
|
return;
|
|
}
|
|
display.clearScreen(color);
|
|
}
|
|
|
|
void GfxRenderer::beginStripTarget(uint8_t* scratch, int stripY0, int stripRows) const {
|
|
// Band is caller-guaranteed in-bounds (the reader's grayscale loop computes
|
|
// it); assert catches future misuse in debug before it mis-renders or wraps
|
|
// the downstream uint16_t cast in writeGrayscalePlaneStrip.
|
|
assert(scratch != nullptr && stripRows > 0 && stripY0 >= 0 && stripY0 <= static_cast<int>(panelHeight) - stripRows);
|
|
_stripBuf = scratch;
|
|
_stripY0 = stripY0;
|
|
_stripRows = stripRows;
|
|
_stripActive = true;
|
|
}
|
|
|
|
void GfxRenderer::endStripTarget() const {
|
|
_stripActive = false;
|
|
_stripBuf = nullptr;
|
|
_stripY0 = 0;
|
|
_stripRows = 0;
|
|
}
|
|
|
|
bool GfxRenderer::glyphIntersectsStrip(int x0, int y0, int x1, int y1) const {
|
|
if (!_stripActive) {
|
|
return true;
|
|
}
|
|
// Rotate the two opposite bbox corners to physical coords. For 90-degree
|
|
// orientations the physical bbox stays axis-aligned, so min/max of the two
|
|
// rotated corners' Y bounds the glyph's physical y-extent.
|
|
int ax, ay, bx, by;
|
|
rotateCoordinates(orientation, x0, y0, &ax, &ay, panelWidth, panelHeight);
|
|
rotateCoordinates(orientation, x1, y1, &bx, &by, panelWidth, panelHeight);
|
|
const int minY = ay < by ? ay : by;
|
|
const int maxY = ay > by ? ay : by;
|
|
return !(maxY < _stripY0 || minY >= _stripY0 + _stripRows);
|
|
}
|
|
|
|
void GfxRenderer::invertScreen() const {
|
|
for (uint32_t i = 0; i < frameBufferSize; i++) {
|
|
frameBuffer[i] = ~frameBuffer[i];
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::displayBuffer(const HalDisplay::RefreshMode refreshMode) const {
|
|
auto elapsed = millis() - start_ms;
|
|
LOG_DBG("GFX", "Time = %lu ms from clearScreen to displayBuffer", elapsed);
|
|
display.displayBuffer(refreshMode, fadingFix);
|
|
}
|
|
|
|
std::string GfxRenderer::truncatedText(const int fontId, const char* text, const int maxWidth,
|
|
const EpdFontFamily::Style style) const {
|
|
if (!text || maxWidth <= 0) return "";
|
|
|
|
std::string item = text;
|
|
// U+2026 HORIZONTAL ELLIPSIS (UTF-8: 0xE2 0x80 0xA6)
|
|
const char* ellipsis = "\xe2\x80\xa6";
|
|
int textWidth = getTextWidth(fontId, item.c_str(), style);
|
|
if (textWidth <= maxWidth) {
|
|
// Text fits, return as is
|
|
return item;
|
|
}
|
|
|
|
while (!item.empty() && getTextWidth(fontId, (item + ellipsis).c_str(), style) >= maxWidth) {
|
|
utf8RemoveLastChar(item);
|
|
}
|
|
|
|
return item.empty() ? ellipsis : item + ellipsis;
|
|
}
|
|
|
|
std::vector<std::string> GfxRenderer::wrappedText(const int fontId, const char* text, const int maxWidth,
|
|
const int maxLines, const EpdFontFamily::Style style) const {
|
|
std::vector<std::string> lines;
|
|
|
|
if (!text || maxWidth <= 0 || maxLines <= 0) return lines;
|
|
|
|
std::string remaining = text;
|
|
std::string currentLine;
|
|
|
|
while (!remaining.empty()) {
|
|
if (static_cast<int>(lines.size()) == maxLines - 1) {
|
|
// Last available line: combine any word already started on this line with
|
|
// the rest of the text, then let truncatedText fit it with an ellipsis.
|
|
std::string lastContent = currentLine.empty() ? remaining : currentLine + " " + remaining;
|
|
lines.push_back(truncatedText(fontId, lastContent.c_str(), maxWidth, style));
|
|
return lines;
|
|
}
|
|
|
|
// Find next word
|
|
size_t spacePos = remaining.find(' ');
|
|
std::string word;
|
|
|
|
if (spacePos == std::string::npos) {
|
|
word = remaining;
|
|
remaining.clear();
|
|
} else {
|
|
word = remaining.substr(0, spacePos);
|
|
remaining.erase(0, spacePos + 1);
|
|
}
|
|
|
|
std::string testLine = currentLine.empty() ? word : currentLine + " " + word;
|
|
|
|
if (getTextWidth(fontId, testLine.c_str(), style) <= maxWidth) {
|
|
currentLine = testLine;
|
|
} else {
|
|
if (!currentLine.empty()) {
|
|
lines.push_back(currentLine);
|
|
// If the carried-over word itself exceeds maxWidth, truncate it and
|
|
// push it as a complete line immediately — storing it in currentLine
|
|
// would allow a subsequent short word to be appended after the ellipsis.
|
|
if (getTextWidth(fontId, word.c_str(), style) > maxWidth) {
|
|
lines.push_back(truncatedText(fontId, word.c_str(), maxWidth, style));
|
|
currentLine.clear();
|
|
if (static_cast<int>(lines.size()) >= maxLines) return lines;
|
|
} else {
|
|
currentLine = word;
|
|
}
|
|
} else {
|
|
// Single word wider than maxWidth: truncate and stop to avoid complicated
|
|
// splitting rules (different between languages). Results in an aesthetically
|
|
// pleasing end.
|
|
lines.push_back(truncatedText(fontId, word.c_str(), maxWidth, style));
|
|
return lines;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!currentLine.empty() && static_cast<int>(lines.size()) < maxLines) {
|
|
lines.push_back(currentLine);
|
|
}
|
|
|
|
return lines;
|
|
}
|
|
|
|
// Note: Internal driver treats screen in command orientation; this library exposes a logical orientation
|
|
int GfxRenderer::getScreenWidth() const {
|
|
switch (orientation) {
|
|
case Portrait:
|
|
case PortraitInverted:
|
|
// 480px wide in portrait logical coordinates
|
|
return panelHeight;
|
|
case LandscapeClockwise:
|
|
case LandscapeCounterClockwise:
|
|
// 800px wide in landscape logical coordinates
|
|
return panelWidth;
|
|
}
|
|
return panelHeight;
|
|
}
|
|
|
|
int GfxRenderer::getScreenHeight() const {
|
|
switch (orientation) {
|
|
case Portrait:
|
|
case PortraitInverted:
|
|
// 800px tall in portrait logical coordinates
|
|
return panelWidth;
|
|
case LandscapeClockwise:
|
|
case LandscapeCounterClockwise:
|
|
// 480px tall in landscape logical coordinates
|
|
return panelHeight;
|
|
}
|
|
return panelWidth;
|
|
}
|
|
|
|
// Translate a logical rect through rotateCoordinates and take the bounding
|
|
// box of its four corners on the physical panel. Output coords are inclusive
|
|
// and clamped. Returns false if the rect ends up fully off-panel.
|
|
static bool logicalRectToPhysicalBounds(GfxRenderer::Orientation orientation, int lx, int ly, int lw, int lh,
|
|
uint16_t panelWidth, uint16_t panelHeight, int* outX0, int* outY0, int* outX1,
|
|
int* outY1) {
|
|
if (lw <= 0 || lh <= 0) return false;
|
|
int minX = INT32_MAX;
|
|
int minY = INT32_MAX;
|
|
int maxX = INT32_MIN;
|
|
int maxY = INT32_MIN;
|
|
const int corners[4][2] = {{lx, ly}, {lx + lw - 1, ly}, {lx, ly + lh - 1}, {lx + lw - 1, ly + lh - 1}};
|
|
for (auto& c : corners) {
|
|
int phyX;
|
|
int phyY;
|
|
rotateCoordinates(orientation, c[0], c[1], &phyX, &phyY, panelWidth, panelHeight);
|
|
if (phyX < minX) minX = phyX;
|
|
if (phyY < minY) minY = phyY;
|
|
if (phyX > maxX) maxX = phyX;
|
|
if (phyY > maxY) maxY = phyY;
|
|
}
|
|
if (minX < 0) minX = 0;
|
|
if (minY < 0) minY = 0;
|
|
if (maxX >= panelWidth) maxX = panelWidth - 1;
|
|
if (maxY >= panelHeight) maxY = panelHeight - 1;
|
|
if (minX > maxX || minY > maxY) return false;
|
|
*outX0 = minX;
|
|
*outY0 = minY;
|
|
*outX1 = maxX;
|
|
*outY1 = maxY;
|
|
return true;
|
|
}
|
|
|
|
size_t GfxRenderer::getRegionByteSize(int lx, int ly, int lw, int lh) const {
|
|
int x0, y0, x1, y1;
|
|
if (!logicalRectToPhysicalBounds(orientation, lx, ly, lw, lh, panelWidth, panelHeight, &x0, &y0, &x1, &y1)) {
|
|
return 0;
|
|
}
|
|
// x bounds are in pixels; widen to byte boundaries on either side so per-row
|
|
// memcpy stays byte-aligned even when the logical rect doesn't.
|
|
const int byteX0 = x0 / 8;
|
|
const int byteX1 = x1 / 8;
|
|
const int bytesPerRow = byteX1 - byteX0 + 1;
|
|
const int rowCount = y1 - y0 + 1;
|
|
return static_cast<size_t>(bytesPerRow) * static_cast<size_t>(rowCount);
|
|
}
|
|
|
|
bool GfxRenderer::copyRegionToBuffer(int lx, int ly, int lw, int lh, uint8_t* buf, size_t bufSize) const {
|
|
int x0, y0, x1, y1;
|
|
if (!logicalRectToPhysicalBounds(orientation, lx, ly, lw, lh, panelWidth, panelHeight, &x0, &y0, &x1, &y1)) {
|
|
return false;
|
|
}
|
|
const int byteX0 = x0 / 8;
|
|
const int byteX1 = x1 / 8;
|
|
const int bytesPerRow = byteX1 - byteX0 + 1;
|
|
const int rowCount = y1 - y0 + 1;
|
|
const size_t needed = static_cast<size_t>(bytesPerRow) * static_cast<size_t>(rowCount);
|
|
if (bufSize < needed || !frameBuffer || !buf) return false;
|
|
for (int row = 0; row < rowCount; row++) {
|
|
const uint8_t* src = frameBuffer + (y0 + row) * panelWidthBytes + byteX0;
|
|
memcpy(buf + row * bytesPerRow, src, bytesPerRow);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool GfxRenderer::copyBufferToRegion(int lx, int ly, int lw, int lh, const uint8_t* buf, size_t bufSize) const {
|
|
int x0, y0, x1, y1;
|
|
if (!logicalRectToPhysicalBounds(orientation, lx, ly, lw, lh, panelWidth, panelHeight, &x0, &y0, &x1, &y1)) {
|
|
return false;
|
|
}
|
|
const int byteX0 = x0 / 8;
|
|
const int byteX1 = x1 / 8;
|
|
const int bytesPerRow = byteX1 - byteX0 + 1;
|
|
const int rowCount = y1 - y0 + 1;
|
|
const size_t needed = static_cast<size_t>(bytesPerRow) * static_cast<size_t>(rowCount);
|
|
if (bufSize < needed || !frameBuffer || !buf) return false;
|
|
for (int row = 0; row < rowCount; row++) {
|
|
uint8_t* dst = frameBuffer + (y0 + row) * panelWidthBytes + byteX0;
|
|
memcpy(dst, buf + row * bytesPerRow, bytesPerRow);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int GfxRenderer::getSpaceWidth(const int fontId, const EpdFontFamily::Style style) const {
|
|
// Advance table fast-path for SD card fonts during layout
|
|
auto sdIt = sdCardFonts_.find(fontId);
|
|
if (sdIt != sdCardFonts_.end() && sdIt->second->hasAdvanceTable()) {
|
|
const uint8_t resolvedStyle = resolveSdCardStyle(*sdIt->second, style);
|
|
return fp4::toPixel(sdIt->second->getAdvance(' ', resolvedStyle));
|
|
}
|
|
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
|
|
const EpdGlyph* spaceGlyph = fontIt->second.getGlyph(' ', style);
|
|
return spaceGlyph ? fp4::toPixel(spaceGlyph->advanceX) : 0; // snap 12.4 fixed-point to nearest pixel
|
|
}
|
|
|
|
int GfxRenderer::getSpaceAdvance(const int fontId, const uint32_t leftCp, const uint32_t rightCp,
|
|
const EpdFontFamily::Style style) const {
|
|
// Advance table fast-path for SD card fonts during layout.
|
|
// Kern data is not loaded during layout (consistent with previous metadataOnly behavior),
|
|
// so we return just the space advance without kerning.
|
|
auto sdIt = sdCardFonts_.find(fontId);
|
|
if (sdIt != sdCardFonts_.end() && sdIt->second->hasAdvanceTable()) {
|
|
const uint8_t resolvedStyle = resolveSdCardStyle(*sdIt->second, style);
|
|
return fp4::toPixel(sdIt->second->getAdvance(' ', resolvedStyle));
|
|
}
|
|
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) return 0;
|
|
const auto& font = fontIt->second;
|
|
const EpdGlyph* spaceGlyph = font.getGlyph(' ', style);
|
|
const int32_t spaceAdvanceFP = spaceGlyph ? static_cast<int32_t>(spaceGlyph->advanceX) : 0;
|
|
// Combine space advance + flanking kern into one fixed-point sum before snapping.
|
|
// Snapping the combined value avoids the +/-1 px error from snapping each component separately.
|
|
const int32_t kernFP = static_cast<int32_t>(font.getKerning(leftCp, ' ', style)) +
|
|
static_cast<int32_t>(font.getKerning(' ', rightCp, style));
|
|
return fp4::toPixel(spaceAdvanceFP + kernFP);
|
|
}
|
|
|
|
int GfxRenderer::getKerning(const int fontId, const uint32_t leftCp, const uint32_t rightCp,
|
|
const EpdFontFamily::Style style) const {
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) return 0;
|
|
const int kernFP = fontIt->second.getKerning(leftCp, rightCp, style); // 4.4 fixed-point
|
|
return fp4::toPixel(kernFP); // snap 4.4 fixed-point to nearest pixel
|
|
}
|
|
|
|
int GfxRenderer::getTextAdvanceX(const int fontId, const char* text, EpdFontFamily::Style style) const {
|
|
// Advance table fast-path for SD card fonts during layout.
|
|
// No kerning/ligature lookup — consistent with previous metadataOnly behavior
|
|
// where kern/lig data was not loaded.
|
|
auto sdIt = sdCardFonts_.find(fontId);
|
|
if (sdIt != sdCardFonts_.end() && sdIt->second->hasAdvanceTable()) {
|
|
int32_t widthFP = 0;
|
|
const bool isSupSub = (style & (EpdFontFamily::SUP | EpdFontFamily::SUB)) != 0;
|
|
const uint8_t styleIdx = resolveSdCardStyle(*sdIt->second, style);
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
const auto& font = fontIt->second;
|
|
while (uint32_t cp = utf8NextCodepoint(reinterpret_cast<const uint8_t**>(&text))) {
|
|
int32_t advFP = sdIt->second->getAdvance(cp, styleIdx);
|
|
if (advFP == 0 && !utf8IsCombiningMark(cp)) {
|
|
const EpdGlyph* glyph = font.getGlyph(cp, style);
|
|
advFP = glyph ? glyph->advanceX : 0;
|
|
}
|
|
widthFP += isSupSub ? (advFP + 1) / 2 : advFP;
|
|
}
|
|
return fp4::toPixel(widthFP);
|
|
}
|
|
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
|
|
uint32_t cp;
|
|
uint32_t prevCp = 0;
|
|
int widthPx = 0;
|
|
int32_t prevAdvanceFP = 0; // 12.4 fixed-point: prev glyph's advance + next kern for snap
|
|
const auto& font = fontIt->second;
|
|
while ((cp = utf8NextCodepoint(reinterpret_cast<const uint8_t**>(&text)))) {
|
|
if (utf8IsCombiningMark(cp)) {
|
|
continue;
|
|
}
|
|
cp = font.applyLigatures(cp, text, style);
|
|
|
|
// Differential rounding: snap (previous advance + current kern) together,
|
|
// matching drawText so measurement and rendering agree exactly.
|
|
if (prevCp != 0) {
|
|
const auto kernFP = font.getKerning(prevCp, cp, style); // 4.4 fixed-point kern
|
|
widthPx += fp4::toPixel(prevAdvanceFP + kernFP); // snap 12.4 fixed-point to nearest pixel
|
|
}
|
|
|
|
const EpdGlyph* glyph = font.getGlyph(cp, style);
|
|
prevAdvanceFP = glyph ? glyph->advanceX : 0;
|
|
if ((style & (EpdFontFamily::SUP | EpdFontFamily::SUB)) != 0) {
|
|
prevAdvanceFP = (prevAdvanceFP + 1) / 2;
|
|
}
|
|
prevCp = cp;
|
|
}
|
|
widthPx += fp4::toPixel(prevAdvanceFP); // final glyph's advance
|
|
return widthPx;
|
|
}
|
|
|
|
int GfxRenderer::getFontAscenderSize(const int fontId) const {
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
|
|
return fontIt->second.getData(EpdFontFamily::REGULAR)->ascender;
|
|
}
|
|
|
|
int GfxRenderer::getLineHeight(const int fontId) const {
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
|
|
return fontIt->second.getData(EpdFontFamily::REGULAR)->advanceY;
|
|
}
|
|
|
|
int GfxRenderer::getTextHeight(const int fontId) const {
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return 0;
|
|
}
|
|
return fontIt->second.getData(EpdFontFamily::REGULAR)->ascender;
|
|
}
|
|
|
|
void GfxRenderer::drawTextRotated90CW(const int fontId, const int x, const int y, const char* text, const bool black,
|
|
const EpdFontFamily::Style style) const {
|
|
// Cannot draw a NULL / empty string
|
|
if (text == nullptr || *text == '\0') {
|
|
return;
|
|
}
|
|
|
|
const auto fontIt = fontMap.find(fontId);
|
|
if (fontIt == fontMap.end()) {
|
|
LOG_ERR("GFX", "Font %d not found", fontId);
|
|
return;
|
|
}
|
|
|
|
const auto& font = fontIt->second;
|
|
|
|
int lastBaseY = y;
|
|
int lastBaseLeft = 0;
|
|
int lastBaseWidth = 0;
|
|
int lastBaseTop = 0;
|
|
int32_t prevAdvanceFP = 0; // 12.4 fixed-point: prev glyph's advance + next kern for snap
|
|
|
|
uint32_t cp;
|
|
uint32_t prevCp = 0;
|
|
while ((cp = utf8NextCodepoint(reinterpret_cast<const uint8_t**>(&text)))) {
|
|
// Skip Hebrew Niqqud (vowel marks)
|
|
// Temporary: avoid adding Niqqud to built-in fonts. Remove when custom fonts are supported.
|
|
if (cp >= 0x0591 && cp <= 0x05C7) {
|
|
continue;
|
|
}
|
|
|
|
if (utf8IsCombiningMark(cp)) {
|
|
const EpdGlyph* combiningGlyph = font.getGlyph(cp, style);
|
|
if (!combiningGlyph) continue;
|
|
const int raiseBy = combiningMark::raiseAboveBase(combiningGlyph->top, combiningGlyph->height, lastBaseTop);
|
|
const int combiningX = x - raiseBy;
|
|
const int combiningY = combiningMark::centerOverRotated90CW(lastBaseY, lastBaseLeft, lastBaseWidth,
|
|
combiningGlyph->left, combiningGlyph->width);
|
|
renderCharImpl<TextRotation::Rotated90CW>(*this, renderMode, font, cp, combiningX, combiningY, black, style);
|
|
continue;
|
|
}
|
|
|
|
cp = font.applyLigatures(cp, text, style);
|
|
|
|
// Differential rounding: snap (previous advance + current kern) as one unit,
|
|
// subtracting for the rotated coordinate direction.
|
|
if (prevCp != 0) {
|
|
const auto kernFP = font.getKerning(prevCp, cp, style); // 4.4 fixed-point kern
|
|
lastBaseY -= fp4::toPixel(prevAdvanceFP + kernFP); // snap 12.4 fixed-point to nearest pixel
|
|
}
|
|
|
|
const EpdGlyph* glyph = font.getGlyph(cp, style);
|
|
|
|
lastBaseLeft = glyph ? glyph->left : 0;
|
|
lastBaseWidth = glyph ? glyph->width : 0;
|
|
lastBaseTop = glyph ? glyph->top : 0;
|
|
prevAdvanceFP = glyph ? glyph->advanceX : 0; // 12.4 fixed-point
|
|
|
|
renderCharImpl<TextRotation::Rotated90CW>(*this, renderMode, font, cp, x, lastBaseY, black, style);
|
|
prevCp = cp;
|
|
}
|
|
}
|
|
|
|
uint8_t* GfxRenderer::getFrameBuffer() const { return frameBuffer; }
|
|
|
|
size_t GfxRenderer::getBufferSize() const { return frameBufferSize; }
|
|
|
|
// unused
|
|
// void GfxRenderer::grayscaleRevert() const { display.grayscaleRevert(); }
|
|
|
|
void GfxRenderer::displayGrayscaleBase(HalDisplay::RefreshMode fallback) const {
|
|
display.displayGrayscaleBase(fallback, fadingFix);
|
|
}
|
|
|
|
void GfxRenderer::preconditionGrayscale() const { display.preconditionGrayscale(); }
|
|
|
|
void GfxRenderer::preconditionGrayscale(int x, int y, int w, int h) const {
|
|
if (w <= 0 || h <= 0) return;
|
|
// Rotate the logical rect's opposite corners to physical panel coords; the
|
|
// physical bbox stays axis-aligned for all four orientations.
|
|
int ax, ay, bx, by;
|
|
rotateCoordinates(orientation, x, y, &ax, &ay, panelWidth, panelHeight);
|
|
rotateCoordinates(orientation, x + w - 1, y + h - 1, &bx, &by, panelWidth, panelHeight);
|
|
int x0 = ax < bx ? ax : bx, x1 = ax > bx ? ax : bx;
|
|
int y0 = ay < by ? ay : by, y1 = ay > by ? ay : by;
|
|
if (x0 < 0) x0 = 0;
|
|
if (y0 < 0) y0 = 0;
|
|
if (x1 >= panelWidth) x1 = panelWidth - 1;
|
|
if (y1 >= panelHeight) y1 = panelHeight - 1;
|
|
if (x1 < x0 || y1 < y0) return;
|
|
display.preconditionGrayscale(static_cast<uint16_t>(x0), static_cast<uint16_t>(y0),
|
|
static_cast<uint16_t>(x1 - x0 + 1), static_cast<uint16_t>(y1 - y0 + 1));
|
|
}
|
|
|
|
void GfxRenderer::copyGrayscaleLsbBuffers() const { display.copyGrayscaleLsbBuffers(frameBuffer); }
|
|
|
|
void GfxRenderer::copyGrayscaleMsbBuffers() const { display.copyGrayscaleMsbBuffers(frameBuffer); }
|
|
|
|
void GfxRenderer::displayGrayBuffer() const { display.displayGrayBuffer(fadingFix); }
|
|
|
|
void GfxRenderer::writeGrayscalePlaneStrip(bool lsbPlane, const uint8_t* scratch, int yStart, int numRows) const {
|
|
// Guard the uint16_t casts below: a negative would wrap to a huge length.
|
|
assert(yStart >= 0 && numRows > 0 && yStart <= static_cast<int>(panelHeight) - numRows);
|
|
display.writeGrayscalePlaneStrip(lsbPlane, scratch, static_cast<uint16_t>(yStart), static_cast<uint16_t>(numRows));
|
|
}
|
|
|
|
bool GfxRenderer::supportsStripGrayscale() const { return display.supportsStripGrayscale(); }
|
|
|
|
void GfxRenderer::freeBwBufferChunks() {
|
|
for (auto& bwBufferChunk : bwBufferChunks) {
|
|
if (bwBufferChunk) {
|
|
free(bwBufferChunk);
|
|
bwBufferChunk = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This should be called before grayscale buffers are populated.
|
|
* A `restoreBwBuffer` call should always follow the grayscale render if this method was called.
|
|
* Uses chunked allocation to avoid needing 48KB of contiguous memory.
|
|
* Returns true if buffer was stored successfully, false if allocation failed.
|
|
*/
|
|
bool GfxRenderer::storeBwBuffer() {
|
|
// Allocate and copy each chunk
|
|
for (size_t i = 0; i < bwBufferChunks.size(); i++) {
|
|
// Check if any chunks are already allocated
|
|
if (bwBufferChunks[i]) {
|
|
LOG_ERR("GFX", "!! BW buffer chunk %zu already stored - this is likely a bug, freeing chunk", i);
|
|
free(bwBufferChunks[i]);
|
|
bwBufferChunks[i] = nullptr;
|
|
}
|
|
|
|
const size_t offset = i * BW_BUFFER_CHUNK_SIZE;
|
|
const size_t chunkSize = std::min(BW_BUFFER_CHUNK_SIZE, static_cast<size_t>(frameBufferSize - offset));
|
|
bwBufferChunks[i] = static_cast<uint8_t*>(malloc(chunkSize));
|
|
|
|
if (!bwBufferChunks[i]) {
|
|
LOG_ERR("GFX", "!! Failed to allocate BW buffer chunk %zu (%zu bytes)", i, chunkSize);
|
|
// Free previously allocated chunks
|
|
freeBwBufferChunks();
|
|
return false;
|
|
}
|
|
|
|
memcpy(bwBufferChunks[i], frameBuffer + offset, chunkSize);
|
|
}
|
|
|
|
LOG_DBG("GFX", "Stored BW buffer in %zu chunks (%zu bytes each)", bwBufferChunks.size(), BW_BUFFER_CHUNK_SIZE);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* This can only be called if `storeBwBuffer` was called prior to the grayscale render.
|
|
* It should be called to restore the BW buffer state after grayscale rendering is complete.
|
|
* Uses chunked restoration to match chunked storage.
|
|
*/
|
|
void GfxRenderer::restoreBwBuffer() {
|
|
// Check if all chunks are allocated
|
|
bool missingChunks = false;
|
|
for (const auto& bwBufferChunk : bwBufferChunks) {
|
|
if (!bwBufferChunk) {
|
|
missingChunks = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (missingChunks) {
|
|
freeBwBufferChunks();
|
|
return;
|
|
}
|
|
|
|
for (size_t i = 0; i < bwBufferChunks.size(); i++) {
|
|
const size_t offset = i * BW_BUFFER_CHUNK_SIZE;
|
|
const size_t chunkSize = std::min(BW_BUFFER_CHUNK_SIZE, static_cast<size_t>(frameBufferSize - offset));
|
|
memcpy(frameBuffer + offset, bwBufferChunks[i], chunkSize);
|
|
}
|
|
|
|
display.cleanupGrayscaleBuffers(frameBuffer);
|
|
|
|
freeBwBufferChunks();
|
|
LOG_DBG("GFX", "Restored and freed BW buffer chunks");
|
|
}
|
|
|
|
/**
|
|
* Cleanup grayscale buffers using the current frame buffer.
|
|
* Use this when BW buffer was re-rendered instead of stored/restored.
|
|
*/
|
|
void GfxRenderer::cleanupGrayscaleWithFrameBuffer() const {
|
|
if (frameBuffer) {
|
|
display.cleanupGrayscaleBuffers(frameBuffer);
|
|
}
|
|
}
|
|
|
|
void GfxRenderer::getOrientedViewableTRBL(int* outTop, int* outRight, int* outBottom, int* outLeft) const {
|
|
switch (orientation) {
|
|
case Portrait:
|
|
*outTop = VIEWABLE_MARGIN_TOP;
|
|
*outRight = VIEWABLE_MARGIN_RIGHT;
|
|
*outBottom = VIEWABLE_MARGIN_BOTTOM;
|
|
*outLeft = VIEWABLE_MARGIN_LEFT;
|
|
break;
|
|
case LandscapeClockwise:
|
|
*outTop = VIEWABLE_MARGIN_LEFT;
|
|
*outRight = VIEWABLE_MARGIN_TOP;
|
|
*outBottom = VIEWABLE_MARGIN_RIGHT;
|
|
*outLeft = VIEWABLE_MARGIN_BOTTOM;
|
|
break;
|
|
case PortraitInverted:
|
|
*outTop = VIEWABLE_MARGIN_BOTTOM;
|
|
*outRight = VIEWABLE_MARGIN_LEFT;
|
|
*outBottom = VIEWABLE_MARGIN_TOP;
|
|
*outLeft = VIEWABLE_MARGIN_RIGHT;
|
|
break;
|
|
case LandscapeCounterClockwise:
|
|
*outTop = VIEWABLE_MARGIN_RIGHT;
|
|
*outRight = VIEWABLE_MARGIN_BOTTOM;
|
|
*outBottom = VIEWABLE_MARGIN_LEFT;
|
|
*outLeft = VIEWABLE_MARGIN_TOP;
|
|
break;
|
|
}
|
|
}
|