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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- *
- */
-
- #include "../../inc/MarlinConfig.h"
-
- #if HAS_GRAPHICAL_TFT
-
- #include "canvas.h"
-
- uint16_t CANVAS::width, CANVAS::height;
- uint16_t CANVAS::startLine, CANVAS::endLine;
- uint16_t *CANVAS::buffer = TFT::buffer;
-
- void CANVAS::New(uint16_t x, uint16_t y, uint16_t width, uint16_t height) {
- CANVAS::width = width;
- CANVAS::height = height;
- startLine = 0;
- endLine = 0;
-
- tft.set_window(x, y, x + width - 1, y + height - 1);
- }
-
- void CANVAS::Continue() {
- startLine = endLine;
- endLine = TFT_BUFFER_SIZE < width * (height - startLine) ? startLine + TFT_BUFFER_SIZE / width : height;
- }
-
- bool CANVAS::ToScreen() {
- tft.write_sequence(buffer, width * (endLine - startLine));
- return endLine == height;
- }
-
- void CANVAS::SetBackground(uint16_t color) {
- /* TODO: test and optimize perfomance */
- /*
- uint32_t count = (endLine - startLine) * width;
- uint16_t *pixel = buffer;
- while (count--)
- *pixel++ = color;
- */
- const uint32_t two_pixels = (((uint32_t )color) << 16) | color;
- uint32_t count = ((endLine - startLine) * width + 1) >> 1;
- uint32_t *pointer = (uint32_t *)buffer;
- while (count--) *pointer++ = two_pixels;
- }
-
- void CANVAS::AddText(uint16_t x, uint16_t y, uint16_t color, uint8_t *string, uint16_t maxWidth) {
- if (endLine < y || startLine > y + GetFontHeight()) return;
-
- if (maxWidth == 0) maxWidth = width - x;
-
- uint16_t stringWidth = 0;
- for (uint16_t i = 0 ; *(string + i) ; i++) {
- glyph_t *glyph = Glyph(string + i);
- if (stringWidth + glyph->BBXWidth > maxWidth) break;
- AddImage(x + stringWidth + glyph->BBXOffsetX, y + Font()->FontAscent - glyph->BBXHeight - glyph->BBXOffsetY, glyph->BBXWidth, glyph->BBXHeight, GREYSCALE1, ((uint8_t *)glyph) + sizeof(glyph_t), &color);
- stringWidth += glyph->DWidth;
- }
- }
-
- void CANVAS::AddImage(int16_t x, int16_t y, MarlinImage image, uint16_t *colors) {
- uint16_t *data = (uint16_t *)Images[image].data;
- if (!data) return;
-
- uint16_t image_width = Images[image].width,
- image_height = Images[image].height;
- colorMode_t color_mode = Images[image].colorMode;
-
- if (color_mode != HIGHCOLOR)
- return AddImage(x, y, image_width, image_height, color_mode, (uint8_t *)data, colors);
-
- // HIGHCOLOR - 16 bits per pixel
-
- for (int16_t i = 0; i < image_height; i++) {
- int16_t line = y + i;
- if (line >= startLine && line < endLine) {
- uint16_t *pixel = buffer + x + (line - startLine) * width;
- for (int16_t j = 0; j < image_width; j++) {
- if ((x + j >= 0) && (x + j < width)) *pixel = *data;
- pixel++;
- data++;
- }
- }
- else
- data += image_width;
- }
- }
-
- void CANVAS::AddImage(int16_t x, int16_t y, uint8_t image_width, uint8_t image_height, colorMode_t color_mode, uint8_t *data, uint16_t *colors) {
- uint8_t bitsPerPixel;
- switch (color_mode) {
- case GREYSCALE1: bitsPerPixel = 1; break;
- case GREYSCALE2: bitsPerPixel = 2; break;
- case GREYSCALE4: bitsPerPixel = 4; break;
- default: return;
- }
-
- uint8_t mask = 0xFF >> (8 - bitsPerPixel),
- pixelsPerByte = 8 / bitsPerPixel;
-
- colors--;
-
- for (int16_t i = 0; i < image_height; i++) {
- int16_t line = y + i;
- if (line >= startLine && line < endLine) {
- uint16_t *pixel = buffer + x + (line - startLine) * width;
- uint8_t offset = 8 - bitsPerPixel;
- for (int16_t j = 0; j < image_width; j++) {
- if (offset > 8) {
- data++;
- offset = 8 - bitsPerPixel;
- }
- if ((x + j >= 0) && (x + j < width)) {
- const uint8_t color = ((*data) >> offset) & mask;
- if (color) *pixel = *(colors + color);
- }
- pixel++;
- offset -= bitsPerPixel;
- }
- data++;
- }
- else
- data += (image_width + pixelsPerByte - 1) / pixelsPerByte;
- }
- }
-
- void CANVAS::AddRectangle(uint16_t x, uint16_t y, uint16_t rectangleWidth, uint16_t rectangleHeight, uint16_t color) {
- if (endLine < y || startLine > y + rectangleHeight) return;
-
- for (uint16_t i = 0; i < rectangleHeight; i++) {
- uint16_t line = y + i;
- if (line >= startLine && line < endLine) {
- uint16_t *pixel = buffer + x + (line - startLine) * width;
- if (i == 0 || i == rectangleHeight - 1) {
- for (uint16_t j = 0; j < rectangleWidth; j++) *pixel++ = color;
- }
- else {
- *pixel = color;
- pixel += rectangleWidth - 1;
- *pixel = color;
- }
- }
- }
- }
-
- void CANVAS::AddBar(uint16_t x, uint16_t y, uint16_t barWidth, uint16_t barHeight, uint16_t color) {
- if (endLine < y || startLine > y + barHeight) return;
-
- for (uint16_t i = 0; i < barHeight; i++) {
- uint16_t line = y + i;
- if (line >= startLine && line < endLine) {
- uint16_t *pixel = buffer + x + (line - startLine) * width;
- for (uint16_t j = 0; j < barWidth; j++) *pixel++ = color;
- }
- }
- }
-
- CANVAS Canvas;
-
- #endif // HAS_GRAPHICAL_TFT
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