mirror of
https://github.com/esphome/esphome.git
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display: add BaseFont
and introduce Font::draw
methods (#4963)
This commit is contained in:
parent
5a8e93ed0a
commit
8c9d63f48f
7 changed files with 106 additions and 100 deletions
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@ -7,10 +7,6 @@
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#include "esphome/core/helpers.h"
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#include "esphome/core/log.h"
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#include "animation.h"
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#include "image.h"
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#include "font.h"
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namespace esphome {
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namespace display {
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@ -256,54 +252,14 @@ void DisplayBuffer::filled_circle(int center_x, int center_y, int radius, Color
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} while (dx <= 0);
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}
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void DisplayBuffer::print(int x, int y, Font *font, Color color, TextAlign align, const char *text) {
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void DisplayBuffer::print(int x, int y, BaseFont *font, Color color, TextAlign align, const char *text) {
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int x_start, y_start;
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int width, height;
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this->get_text_bounds(x, y, text, font, align, &x_start, &y_start, &width, &height);
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int i = 0;
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int x_at = x_start;
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while (text[i] != '\0') {
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int match_length;
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int glyph_n = font->match_next_glyph(text + i, &match_length);
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if (glyph_n < 0) {
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// Unknown char, skip
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ESP_LOGW(TAG, "Encountered character without representation in font: '%c'", text[i]);
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if (!font->get_glyphs().empty()) {
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uint8_t glyph_width = font->get_glyphs()[0].glyph_data_->width;
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for (int glyph_x = 0; glyph_x < glyph_width; glyph_x++) {
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for (int glyph_y = 0; glyph_y < height; glyph_y++)
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this->draw_pixel_at(glyph_x + x_at, glyph_y + y_start, color);
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}
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x_at += glyph_width;
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}
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i++;
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continue;
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}
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const Glyph &glyph = font->get_glyphs()[glyph_n];
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int scan_x1, scan_y1, scan_width, scan_height;
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glyph.scan_area(&scan_x1, &scan_y1, &scan_width, &scan_height);
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{
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const int glyph_x_max = scan_x1 + scan_width;
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const int glyph_y_max = scan_y1 + scan_height;
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for (int glyph_x = scan_x1; glyph_x < glyph_x_max; glyph_x++) {
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for (int glyph_y = scan_y1; glyph_y < glyph_y_max; glyph_y++) {
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if (glyph.get_pixel(glyph_x, glyph_y)) {
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this->draw_pixel_at(glyph_x + x_at, glyph_y + y_start, color);
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}
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}
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}
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}
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x_at += glyph.glyph_data_->width + glyph.glyph_data_->offset_x;
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i += match_length;
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}
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font->print(x_start, y_start, this, color, text);
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}
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void DisplayBuffer::vprintf_(int x, int y, Font *font, Color color, TextAlign align, const char *format, va_list arg) {
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void DisplayBuffer::vprintf_(int x, int y, BaseFont *font, Color color, TextAlign align, const char *format,
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va_list arg) {
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char buffer[256];
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int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
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if (ret > 0)
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@ -358,7 +314,7 @@ void DisplayBuffer::qr_code(int x, int y, qr_code::QrCode *qr_code, Color color_
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}
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#endif // USE_QR_CODE
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void DisplayBuffer::get_text_bounds(int x, int y, const char *text, Font *font, TextAlign align, int *x1, int *y1,
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void DisplayBuffer::get_text_bounds(int x, int y, const char *text, BaseFont *font, TextAlign align, int *x1, int *y1,
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int *width, int *height) {
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int x_offset, baseline;
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font->measure(text, width, &x_offset, &baseline, height);
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@ -396,34 +352,34 @@ void DisplayBuffer::get_text_bounds(int x, int y, const char *text, Font *font,
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break;
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}
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}
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void DisplayBuffer::print(int x, int y, Font *font, Color color, const char *text) {
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void DisplayBuffer::print(int x, int y, BaseFont *font, Color color, const char *text) {
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this->print(x, y, font, color, TextAlign::TOP_LEFT, text);
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}
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void DisplayBuffer::print(int x, int y, Font *font, TextAlign align, const char *text) {
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void DisplayBuffer::print(int x, int y, BaseFont *font, TextAlign align, const char *text) {
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this->print(x, y, font, COLOR_ON, align, text);
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}
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void DisplayBuffer::print(int x, int y, Font *font, const char *text) {
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void DisplayBuffer::print(int x, int y, BaseFont *font, const char *text) {
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this->print(x, y, font, COLOR_ON, TextAlign::TOP_LEFT, text);
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}
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void DisplayBuffer::printf(int x, int y, Font *font, Color color, TextAlign align, const char *format, ...) {
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void DisplayBuffer::printf(int x, int y, BaseFont *font, Color color, TextAlign align, const char *format, ...) {
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va_list arg;
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va_start(arg, format);
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this->vprintf_(x, y, font, color, align, format, arg);
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va_end(arg);
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}
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void DisplayBuffer::printf(int x, int y, Font *font, Color color, const char *format, ...) {
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void DisplayBuffer::printf(int x, int y, BaseFont *font, Color color, const char *format, ...) {
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va_list arg;
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va_start(arg, format);
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this->vprintf_(x, y, font, color, TextAlign::TOP_LEFT, format, arg);
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va_end(arg);
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}
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void DisplayBuffer::printf(int x, int y, Font *font, TextAlign align, const char *format, ...) {
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void DisplayBuffer::printf(int x, int y, BaseFont *font, TextAlign align, const char *format, ...) {
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va_list arg;
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va_start(arg, format);
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this->vprintf_(x, y, font, COLOR_ON, align, format, arg);
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va_end(arg);
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}
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void DisplayBuffer::printf(int x, int y, Font *font, const char *format, ...) {
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void DisplayBuffer::printf(int x, int y, BaseFont *font, const char *format, ...) {
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va_list arg;
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va_start(arg, format);
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this->vprintf_(x, y, font, COLOR_ON, TextAlign::TOP_LEFT, format, arg);
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@ -470,19 +426,20 @@ void DisplayOnPageChangeTrigger::process(DisplayPage *from, DisplayPage *to) {
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if ((this->from_ == nullptr || this->from_ == from) && (this->to_ == nullptr || this->to_ == to))
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this->trigger(from, to);
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}
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void DisplayBuffer::strftime(int x, int y, Font *font, Color color, TextAlign align, const char *format, ESPTime time) {
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void DisplayBuffer::strftime(int x, int y, BaseFont *font, Color color, TextAlign align, const char *format,
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ESPTime time) {
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char buffer[64];
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size_t ret = time.strftime(buffer, sizeof(buffer), format);
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if (ret > 0)
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this->print(x, y, font, color, align, buffer);
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}
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void DisplayBuffer::strftime(int x, int y, Font *font, Color color, const char *format, ESPTime time) {
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void DisplayBuffer::strftime(int x, int y, BaseFont *font, Color color, const char *format, ESPTime time) {
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this->strftime(x, y, font, color, TextAlign::TOP_LEFT, format, time);
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}
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void DisplayBuffer::strftime(int x, int y, Font *font, TextAlign align, const char *format, ESPTime time) {
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void DisplayBuffer::strftime(int x, int y, BaseFont *font, TextAlign align, const char *format, ESPTime time) {
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this->strftime(x, y, font, COLOR_ON, align, format, time);
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}
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void DisplayBuffer::strftime(int x, int y, Font *font, const char *format, ESPTime time) {
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void DisplayBuffer::strftime(int x, int y, BaseFont *font, const char *format, ESPTime time) {
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this->strftime(x, y, font, COLOR_ON, TextAlign::TOP_LEFT, format, time);
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}
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@ -16,10 +16,6 @@
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#include "esphome/components/qr_code/qr_code.h"
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#endif
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#include "animation.h"
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#include "font.h"
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#include "image.h"
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namespace esphome {
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namespace display {
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@ -175,6 +171,24 @@ using display_writer_t = std::function<void(DisplayBuffer &)>;
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ESP_LOGCONFIG(TAG, "%s Dimensions: %dpx x %dpx", prefix, (obj)->get_width(), (obj)->get_height()); \
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}
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/// Turn the pixel OFF.
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extern const Color COLOR_OFF;
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/// Turn the pixel ON.
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extern const Color COLOR_ON;
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class BaseImage {
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public:
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virtual void draw(int x, int y, DisplayBuffer *display, Color color_on, Color color_off) = 0;
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virtual int get_width() const = 0;
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virtual int get_height() const = 0;
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};
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class BaseFont {
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public:
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virtual void print(int x, int y, DisplayBuffer *display, Color color, const char *text) = 0;
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virtual void measure(const char *str, int *width, int *x_offset, int *baseline, int *height) = 0;
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};
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class DisplayBuffer {
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public:
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/// Fill the entire screen with the given color.
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@ -221,7 +235,7 @@ class DisplayBuffer {
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* @param align The alignment of the text.
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* @param text The text to draw.
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*/
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void print(int x, int y, Font *font, Color color, TextAlign align, const char *text);
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void print(int x, int y, BaseFont *font, Color color, TextAlign align, const char *text);
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/** Print `text` with the top left at [x,y] with `font`.
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*
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@ -231,7 +245,7 @@ class DisplayBuffer {
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* @param color The color to draw the text with.
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* @param text The text to draw.
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*/
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void print(int x, int y, Font *font, Color color, const char *text);
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void print(int x, int y, BaseFont *font, Color color, const char *text);
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/** Print `text` with the anchor point at [x,y] with `font`.
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*
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@ -241,7 +255,7 @@ class DisplayBuffer {
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* @param align The alignment of the text.
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* @param text The text to draw.
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*/
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void print(int x, int y, Font *font, TextAlign align, const char *text);
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void print(int x, int y, BaseFont *font, TextAlign align, const char *text);
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/** Print `text` with the top left at [x,y] with `font`.
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*
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@ -250,7 +264,7 @@ class DisplayBuffer {
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* @param font The font to draw the text with.
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* @param text The text to draw.
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*/
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void print(int x, int y, Font *font, const char *text);
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void print(int x, int y, BaseFont *font, const char *text);
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/** Evaluate the printf-format `format` and print the result with the anchor point at [x,y] with `font`.
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*
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@ -262,7 +276,7 @@ class DisplayBuffer {
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* @param format The format to use.
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* @param ... The arguments to use for the text formatting.
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*/
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void printf(int x, int y, Font *font, Color color, TextAlign align, const char *format, ...)
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void printf(int x, int y, BaseFont *font, Color color, TextAlign align, const char *format, ...)
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__attribute__((format(printf, 7, 8)));
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/** Evaluate the printf-format `format` and print the result with the top left at [x,y] with `font`.
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@ -274,7 +288,7 @@ class DisplayBuffer {
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* @param format The format to use.
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* @param ... The arguments to use for the text formatting.
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*/
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void printf(int x, int y, Font *font, Color color, const char *format, ...) __attribute__((format(printf, 6, 7)));
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void printf(int x, int y, BaseFont *font, Color color, const char *format, ...) __attribute__((format(printf, 6, 7)));
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/** Evaluate the printf-format `format` and print the result with the anchor point at [x,y] with `font`.
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*
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* @param format The format to use.
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* @param ... The arguments to use for the text formatting.
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*/
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void printf(int x, int y, Font *font, TextAlign align, const char *format, ...) __attribute__((format(printf, 6, 7)));
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void printf(int x, int y, BaseFont *font, TextAlign align, const char *format, ...)
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__attribute__((format(printf, 6, 7)));
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/** Evaluate the printf-format `format` and print the result with the top left at [x,y] with `font`.
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*
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* @param format The format to use.
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* @param ... The arguments to use for the text formatting.
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*/
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void printf(int x, int y, Font *font, const char *format, ...) __attribute__((format(printf, 5, 6)));
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void printf(int x, int y, BaseFont *font, const char *format, ...) __attribute__((format(printf, 5, 6)));
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/** Evaluate the strftime-format `format` and print the result with the anchor point at [x,y] with `font`.
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*
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* @param format The strftime format to use.
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* @param time The time to format.
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*/
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void strftime(int x, int y, Font *font, Color color, TextAlign align, const char *format, ESPTime time)
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void strftime(int x, int y, BaseFont *font, Color color, TextAlign align, const char *format, ESPTime time)
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__attribute__((format(strftime, 7, 0)));
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/** Evaluate the strftime-format `format` and print the result with the top left at [x,y] with `font`.
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* @param format The strftime format to use.
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* @param time The time to format.
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*/
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void strftime(int x, int y, Font *font, Color color, const char *format, ESPTime time)
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void strftime(int x, int y, BaseFont *font, Color color, const char *format, ESPTime time)
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__attribute__((format(strftime, 6, 0)));
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/** Evaluate the strftime-format `format` and print the result with the anchor point at [x,y] with `font`.
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* @param format The strftime format to use.
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* @param time The time to format.
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*/
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void strftime(int x, int y, Font *font, TextAlign align, const char *format, ESPTime time)
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void strftime(int x, int y, BaseFont *font, TextAlign align, const char *format, ESPTime time)
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__attribute__((format(strftime, 6, 0)));
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/** Evaluate the strftime-format `format` and print the result with the top left at [x,y] with `font`.
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* @param format The strftime format to use.
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* @param time The time to format.
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*/
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void strftime(int x, int y, Font *font, const char *format, ESPTime time) __attribute__((format(strftime, 5, 0)));
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void strftime(int x, int y, BaseFont *font, const char *format, ESPTime time) __attribute__((format(strftime, 5, 0)));
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/** Draw the `image` with the top-left corner at [x,y] to the screen.
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*
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* @param width A pointer to store the returned text width in.
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* @param height A pointer to store the returned text height in.
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*/
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void get_text_bounds(int x, int y, const char *text, Font *font, TextAlign align, int *x1, int *y1, int *width,
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void get_text_bounds(int x, int y, const char *text, BaseFont *font, TextAlign align, int *x1, int *y1, int *width,
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int *height);
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/// Internal method to set the display writer lambda.
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@ -487,7 +502,7 @@ class DisplayBuffer {
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bool is_clipping() const { return !this->clipping_rectangle_.empty(); }
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protected:
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void vprintf_(int x, int y, Font *font, Color color, TextAlign align, const char *format, va_list arg);
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void vprintf_(int x, int y, BaseFont *font, Color color, TextAlign align, const char *format, va_list arg);
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virtual void draw_absolute_pixel_internal(int x, int y, Color color) = 0;
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@ -1,10 +1,13 @@
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#include "font.h"
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#include "esphome/core/hal.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace display {
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static const char *const TAG = "display";
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bool Glyph::get_pixel(int x, int y) const {
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const int x_data = x - this->glyph_data_->offset_x;
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const int y_data = y - this->glyph_data_->offset_y;
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const uint32_t pos = x_data + y_data * width_8;
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return progmem_read_byte(this->glyph_data_->data + (pos / 8u)) & (0x80 >> (pos % 8u));
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}
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void Glyph::draw(int x_at, int y_start, DisplayBuffer *display, Color color) const {
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int scan_x1, scan_y1, scan_width, scan_height;
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this->scan_area(&scan_x1, &scan_y1, &scan_width, &scan_height);
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const int glyph_x_max = scan_x1 + scan_width;
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const int glyph_y_max = scan_y1 + scan_height;
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for (int glyph_x = scan_x1; glyph_x < glyph_x_max; glyph_x++) {
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for (int glyph_y = scan_y1; glyph_y < glyph_y_max; glyph_y++) {
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if (this->get_pixel(glyph_x, glyph_y)) {
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display->draw_pixel_at(glyph_x + x_at, glyph_y + y_start, color);
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}
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}
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}
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}
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const char *Glyph::get_char() const { return this->glyph_data_->a_char; }
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bool Glyph::compare_to(const char *str) const {
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// 1 -> this->char_
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@ -47,6 +64,12 @@ void Glyph::scan_area(int *x1, int *y1, int *width, int *height) const {
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*width = this->glyph_data_->width;
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*height = this->glyph_data_->height;
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}
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Font::Font(const GlyphData *data, int data_nr, int baseline, int height) : baseline_(baseline), height_(height) {
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glyphs_.reserve(data_nr);
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for (int i = 0; i < data_nr; ++i)
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glyphs_.emplace_back(&data[i]);
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}
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int Font::match_next_glyph(const char *str, int *match_length) {
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int lo = 0;
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int hi = this->glyphs_.size() - 1;
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@ -95,10 +118,31 @@ void Font::measure(const char *str, int *width, int *x_offset, int *baseline, in
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*x_offset = min_x;
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*width = x - min_x;
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}
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Font::Font(const GlyphData *data, int data_nr, int baseline, int height) : baseline_(baseline), height_(height) {
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glyphs_.reserve(data_nr);
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for (int i = 0; i < data_nr; ++i)
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glyphs_.emplace_back(&data[i]);
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void Font::print(int x_start, int y_start, DisplayBuffer *display, Color color, const char *text) {
|
||||
int i = 0;
|
||||
int x_at = x_start;
|
||||
while (text[i] != '\0') {
|
||||
int match_length;
|
||||
int glyph_n = this->match_next_glyph(text + i, &match_length);
|
||||
if (glyph_n < 0) {
|
||||
// Unknown char, skip
|
||||
ESP_LOGW(TAG, "Encountered character without representation in font: '%c'", text[i]);
|
||||
if (!this->get_glyphs().empty()) {
|
||||
uint8_t glyph_width = this->get_glyphs()[0].glyph_data_->width;
|
||||
display->filled_rectangle(x_at, y_start, glyph_width, this->height_, color);
|
||||
x_at += glyph_width;
|
||||
}
|
||||
|
||||
i++;
|
||||
continue;
|
||||
}
|
||||
|
||||
const Glyph &glyph = this->get_glyphs()[glyph_n];
|
||||
glyph.draw(x_at, y_start, display, color);
|
||||
x_at += glyph.glyph_data_->width + glyph.glyph_data_->offset_x;
|
||||
|
||||
i += match_length;
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace display
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
#pragma once
|
||||
|
||||
#include "esphome/core/datatypes.h"
|
||||
#include "display_buffer.h"
|
||||
|
||||
namespace esphome {
|
||||
namespace display {
|
||||
|
@ -23,6 +24,8 @@ class Glyph {
|
|||
|
||||
bool get_pixel(int x, int y) const;
|
||||
|
||||
void draw(int x, int y, DisplayBuffer *display, Color color) const;
|
||||
|
||||
const char *get_char() const;
|
||||
|
||||
bool compare_to(const char *str) const;
|
||||
|
@ -33,12 +36,11 @@ class Glyph {
|
|||
|
||||
protected:
|
||||
friend Font;
|
||||
friend DisplayBuffer;
|
||||
|
||||
const GlyphData *glyph_data_;
|
||||
};
|
||||
|
||||
class Font {
|
||||
class Font : public BaseFont {
|
||||
public:
|
||||
/** Construct the font with the given glyphs.
|
||||
*
|
||||
|
@ -50,7 +52,8 @@ class Font {
|
|||
|
||||
int match_next_glyph(const char *str, int *match_length);
|
||||
|
||||
void measure(const char *str, int *width, int *x_offset, int *baseline, int *height);
|
||||
void print(int x_start, int y_start, DisplayBuffer *display, Color color, const char *text) override;
|
||||
void measure(const char *str, int *width, int *x_offset, int *baseline, int *height) override;
|
||||
inline int get_baseline() { return this->baseline_; }
|
||||
inline int get_height() { return this->height_; }
|
||||
|
||||
|
|
|
@ -1,7 +1,6 @@
|
|||
#include "image.h"
|
||||
|
||||
#include "esphome/core/hal.h"
|
||||
#include "display_buffer.h"
|
||||
|
||||
namespace esphome {
|
||||
namespace display {
|
||||
|
|
|
@ -1,5 +1,6 @@
|
|||
#pragma once
|
||||
#include "esphome/core/color.h"
|
||||
#include "display_buffer.h"
|
||||
|
||||
namespace esphome {
|
||||
namespace display {
|
||||
|
@ -30,20 +31,6 @@ inline int image_type_to_bpp(ImageType type) {
|
|||
|
||||
inline int image_type_to_width_stride(int width, ImageType type) { return (width * image_type_to_bpp(type) + 7u) / 8u; }
|
||||
|
||||
/// Turn the pixel OFF.
|
||||
extern const Color COLOR_OFF;
|
||||
/// Turn the pixel ON.
|
||||
extern const Color COLOR_ON;
|
||||
|
||||
class DisplayBuffer;
|
||||
|
||||
class BaseImage {
|
||||
public:
|
||||
virtual void draw(int x, int y, DisplayBuffer *display, Color color_on, Color color_off) = 0;
|
||||
virtual int get_width() const = 0;
|
||||
virtual int get_height() const = 0;
|
||||
};
|
||||
|
||||
class Image : public BaseImage {
|
||||
public:
|
||||
Image(const uint8_t *data_start, int width, int height, ImageType type);
|
||||
|
|
|
@ -1,5 +1,6 @@
|
|||
#include "graph.h"
|
||||
#include "esphome/components/display/display_buffer.h"
|
||||
#include "esphome/components/display/font.h"
|
||||
#include "esphome/core/color.h"
|
||||
#include "esphome/core/log.h"
|
||||
#include "esphome/core/hal.h"
|
||||
|
|
Loading…
Reference in a new issue