AAbstractLabel.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2024 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include <AUI/Enum/VerticalAlign.h>
#include <AUI/Enum/TextTransform.h>
#include "AUI/Platform/AWindowBase.h"
#include "AView.h"
#include "AUI/Render/IRenderer.h"
#include "AUI/Common/AString.h"
#include "AUI/Image/IDrawable.h"
#include "AUI/Enum/WordBreak.h"
#include "AUI/Font/IFontView.h"
#include <AUI/Util/ADataBinding.h>
#include <AUI/Common/IStringable.h>
#include <AUI/Util/Declarative.h>

class API_AUI_VIEWS AAbstractLabel : public AView, public IStringable, public IFontView {
public:
    AAbstractLabel();

    auto text() const {
        return APropertyDef {
            this,
            &AAbstractLabel::mText,
            &AAbstractLabel::setText,
            mTextChanged,
        };
    }
 
    explicit AAbstractLabel(AString text) noexcept: mText(std::move(text)) {}
 
    void render(ARenderContext context) override;
    void doRenderText(IRenderer& render);
    int getContentMinimumWidth() override;
    int getContentMinimumHeight() override;
 
    const _<IDrawable>& getIcon() const {
        return mIcon;
    }
 
    AString toString() const override;
 
    void setIcon(const _<IDrawable>& drawable) {
        mIcon = drawable;
        redraw();
    }
 
    void setIconColor(const AColor& iconColor) {
        mIconColor = iconColor;
    }
 
    void doPrerender(IRenderer& render);
 
    bool consumesClick(const glm::ivec2& pos) override;
 
    void onDpiChanged() override;
 
    void setText(AString newText);
 
    void invalidateFont() override;
 
    void setVerticalAlign(VerticalAlign verticalAlign) {
        if (mVerticalAlign == verticalAlign) {
            return;
        }
        mVerticalAlign = verticalAlign;
        invalidateFont();
    }
 
    void setTextOverflow(ATextOverflow textOverflow) {
        if (mTextOverflow == textOverflow) {
            return;
        }
        mTextOverflow = textOverflow;
        markMinContentSizeInvalid();
    }
 
    void setTextTransform(TextTransform textTransform) {
        if (mTextTransform == textTransform) {
            return;
        }
        mTextTransform = textTransform;
        invalidateFont();
    }
 
    void setSize(glm::ivec2 size) override;
 
    void invalidateAllStyles() override;
 
protected:
    _<IRenderer::IPrerenderedString> mPrerendered;
 
    const _<IRenderer::IPrerenderedString>& getPrerendered() {
        return mPrerendered;
    }
 
    void commitStyle() override;
    //void userProcessStyleSheet(const std::function<void(css, const std::function<void(property)>&)>& processor) override;
 
 
    // for correct selection positioning (used in ASelectableLabel)
    int mTextLeftOffset = 0;
    bool mIsTextTooLarge = false;
 
private:
    AString mText;
    emits<AString> mTextChanged;
    _<IDrawable> mIcon;
    VerticalAlign mVerticalAlign = VerticalAlign::DEFAULT;
    TextTransform mTextTransform = TextTransform::NONE;
    AColor mIconColor = {1, 1, 1, 1};
 
    glm::ivec2 getIconSize() const;

    ATextOverflow mTextOverflow = ATextOverflow::NONE;
 
    AString getTransformedText();
 
    void processTextOverflow(AString& text);
 
    template<class Iterator>
    Iterator findFirstOverflowedIndex(const Iterator& begin, const Iterator& end, int overflowingWidth);
 
    template<class Iterator>
    void processTextOverflow(Iterator begin, Iterator end, int overflowingWidth);
 
};
 
 
template<>
struct ADataBindingDefault<AAbstractLabel, AString> {
public:
    static auto property(const _<AAbstractLabel>& view) {
        return view->text();
    }
 
    static void setup(const _<AAbstractLabel>& view) {}
 
    static auto getGetter() {
        return (ASignal<AString> AAbstractLabel::*) nullptr;
    }
 
    static auto getSetter() {
        return &AAbstractLabel::setText;
    }
};