102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
/*
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ptrnt - print labels on linux
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Copyright (C) 2023 Moritz Martinius
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <pango/pangocairo.h>
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#include <cstdint>
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#include <memory>
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#include <string>
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#include <vector>
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#include "cairo.h"
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#include "graphics/interface/ILabel.hpp"
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#include "pango/pango-types.h"
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namespace ptprnt::graphics {
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// Custom deleters for Cairo/Pango resources
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struct CairoSurfaceDeleter {
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void operator()(cairo_surface_t* surface) const {
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if (surface)
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cairo_surface_destroy(surface);
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}
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};
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struct CairoDeleter {
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void operator()(cairo_t* cr) const {
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if (cr)
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cairo_destroy(cr);
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}
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};
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struct GObjectDeleter {
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void operator()(gpointer obj) const {
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if (obj)
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g_object_unref(obj);
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}
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};
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class Label : public ILabel {
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public:
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Label(const uint16_t heightPixel);
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~Label() override;
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Label(const Label&) = delete;
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Label& operator=(const Label&) = delete;
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Label(Label&&) = delete;
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Label& operator=(Label&&) = delete;
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bool create(PrintableText printableText) override;
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bool create(const std::string& labelText) override;
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void writeToPng(const std::string& file);
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[[nodiscard]] int getWidth() override;
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[[nodiscard]] int getHeight() override;
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[[nodiscard]] int getLayoutWidth() override;
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[[nodiscard]] int getLayoutHeight() override;
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[[nodiscard]] std::vector<uint8_t> getRaw() override;
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void setFontSize(const double fontSize) override;
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void setFontFamily(const std::string& fontFamily) override;
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void setText(const std::string& text) override;
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void setHAlign(HAlignPosition hpos) override;
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void setVAlign(VAlignPosition vpos) override;
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private:
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// methods
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[[nodiscard]] uint8_t getNumLines(std::string_view str);
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[[nodiscard]] PangoFontMap* createCustomFontMap();
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void configureLayout(PangoLayout* layout, const std::string& text, PangoFontDescription* fontDesc);
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void applyHorizontalAlignment(PangoLayout* layout);
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std::unique_ptr<cairo_surface_t, CairoSurfaceDeleter> mSurface{nullptr};
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std::unique_ptr<cairo_t, CairoDeleter> mCairoCtx{nullptr};
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std::unique_ptr<PangoContext, GObjectDeleter> mPangoCtx{nullptr};
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std::unique_ptr<PangoLayout, GObjectDeleter> mPangoLyt{nullptr};
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std::unique_ptr<PangoFontMap, GObjectDeleter> mFontMap{nullptr};
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double mFontSize{DEFAULT_FONT_SIZE};
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std::string mFontFamily{DEFAULT_FONT_FAMILY};
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HAlignPosition mHAlign = HAlignPosition::LEFT;
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VAlignPosition mVAlign = VAlignPosition::MIDDLE;
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std::string mText{""};
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int mLayoutWidth = 0, mLayoutHeight = 0;
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int mPrinterHeight = 0;
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};
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} // namespace ptprnt::graphics
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