Add fake printer for testing

2025-10-11 13:00:26 +02:00
parent 0b8ff28a60
commit 6e3a5bd12f
7 changed files with 429 additions and 19 deletions
--- a/src/printers/FakePrinter.hpp
+++ b/src/printers/FakePrinter.hpp
@@ -0,0 +1,94 @@
+/*
+    ptrnt - print labels on linux
+    Copyright (C) 2023  Moritz Martinius
+
+    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/>.
+
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+#include <cstdint>
+
+#include "../interface/IPrinterDriver.hpp"
+#include "../interface/IPrinterTypes.hpp"
+#include "../libusbwrap/LibUsbTypes.hpp"
+#include "../libusbwrap/interface/IUsbDevice.hpp"
+#include "../graphics/Bitmap.hpp"
+
+namespace ptprnt::printer {
+
+/**
+ * @brief Virtual printer driver for testing without hardware
+ *
+ * FakePrinter simulates a real label printer by processing bitmap data
+ * column by column and reconstructing it into a new bitmap, mimicking
+ * the physical printing process of label printers.
+ */
+class FakePrinter : public ::ptprnt::IPrinterDriver {
+   public:
+    FakePrinter() = default;
+    ~FakePrinter() override = default;
+
+    FakePrinter(const FakePrinter&)            = delete;
+    FakePrinter& operator=(const FakePrinter&) = delete;
+    FakePrinter(FakePrinter&&)                 = default;
+    FakePrinter& operator=(FakePrinter&&)      = default;
+
+    // Printer info - static to be accessed without instantiation
+    static const PrinterInfo mInfo;
+
+    // IPrinterDriver interface
+    [[nodiscard]] const std::string_view getDriverName() override;
+    [[nodiscard]] const std::string_view getName() override;
+    [[nodiscard]] const libusbwrap::usbId getUsbId() override;
+    [[nodiscard]] const std::string_view getVersion() override;
+    [[nodiscard]] const PrinterInfo getPrinterInfo() override;
+    [[nodiscard]] const PrinterStatus getPrinterStatus() override;
+    bool attachUsbDevice(std::shared_ptr<libusbwrap::IUsbDevice> usbHndl) override;
+    bool detachUsbDevice() override;
+    bool printBitmap(const graphics::Bitmap<graphics::ALPHA8>& bitmap) override;
+    bool printMonochromeData(const graphics::MonochromeData& data) override;
+    bool printLabel(const std::unique_ptr<graphics::ILabel> label) override;
+    bool print() override;
+
+    /**
+     * @brief Get the last printed bitmap
+     * @return The reconstructed bitmap from simulated printing
+     */
+    [[nodiscard]] const graphics::Bitmap<graphics::ALPHA8>& getLastPrint() const;
+
+    /**
+     * @brief Save the last print to a PNG file
+     * @param filename Path to save the PNG
+     * @return true if successful
+     */
+    bool saveLastPrintToPng(const std::string& filename) const;
+
+   private:
+    /**
+     * @brief Simulate printing by reconstructing bitmap column by column
+     * @param data Monochrome data to "print"
+     * @return Reconstructed bitmap
+     */
+    graphics::Bitmap<graphics::ALPHA8> simulatePrinting(const graphics::MonochromeData& data);
+
+    std::unique_ptr<graphics::Bitmap<graphics::ALPHA8>> mLastPrint;
+    bool mHasAttachedDevice = false;
+    PrinterStatus mStatus{.tapeWidthMm = 12};  // Default to 12mm tape
+};
+
+}  // namespace ptprnt::printer