eez-flow-template-stm32f746g-disco/Middlewares/eez/gui/page.h

/*
 * EEZ Modular Firmware
 * Copyright (C) 2015-present, Envox d.o.o.
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <eez/gui/widgets/button.h>
#include <eez/gui/widgets/rectangle.h>
#include <eez/gui/widgets/text.h>

namespace eez {
namespace gui {

extern Value g_alertMessage;

////////////////////////////////////////////////////////////////////////////////

class Page {
public:
    virtual ~Page() {
    }

    virtual void pageAlloc();
    virtual void pageFree();

    virtual void pageWillAppear();

    virtual void onEncoder(int counter);
    virtual void onEncoderClicked();
    virtual Unit getEncoderUnit();

    virtual int getDirty();
    virtual void set();
    virtual void discard();

    virtual bool showAreYouSureOnDiscard();
};

////////////////////////////////////////////////////////////////////////////////

class SetPage : public Page {
public:
    virtual void edit();

protected:
    int16_t editDataId;

    static void onSetValue(float value);
    virtual void setValue(float value);
};

////////////////////////////////////////////////////////////////////////////////

class InternalPage : public Page {
public:
    virtual void updateInternalPage() = 0;
	virtual WidgetCursor findWidgetInternalPage(int x, int y, bool clicked) = 0;
    virtual bool canClickPassThrough();
    virtual bool closeIfTouchedOutside();

    int x;
    int y;
    int width;
    int height;

protected:
    Widget widget;
};

////////////////////////////////////////////////////////////////////////////////

enum ToastType {
    INFO_TOAST,
    ERROR_TOAST
};

class ToastMessagePage : public InternalPage {
    friend class AppContext;

    static ToastMessagePage *findFreePage();

public:
    static ToastMessagePage *create(AppContext *appContext, ToastType type, const char *message, bool autoDismiss = false);
    static ToastMessagePage *create(AppContext *appContext, ToastType type, Value message);
    static ToastMessagePage *create(AppContext *appContext, ToastType type, Value message, void (*action)(int param), const char *actionLabel, int actionParam);
    static ToastMessagePage *create(AppContext *appContext, ToastType type, const char *message, void (*action)(), const char *actionLabel);

    void init(AppContext *appContext, ToastType type, const Value& message);

    void pageFree();

    void onEncoder(int counter);
    void onEncoderClicked();

    void updateInternalPage();
    WidgetCursor findWidgetInternalPage(int x, int y, bool clicked);
    bool canClickPassThrough();
    bool closeIfTouchedOutside();

    bool hasAction() {
      return actionWidget.action != 0;
    }

    static void executeAction();
    static void executeActionWithoutParam();

	AppContext *appContext;
    Value messageValue;

private:
    ToastType type;

    static const size_t MAX_MESSAGE_LENGTH = 200;
    char messageBuffer[MAX_MESSAGE_LENGTH];

    const char *actionLabel;
    void (*action)(int param);
    int actionParam;
    void (*actionWithoutParam)();

    RectangleWidget containerRectangleWidget;
    TextWidget line1Widget;
    TextWidget line2Widget;
    TextWidget line3Widget;
    ButtonWidget actionWidget;

    WidgetCursor lastActiveWidget;
};

////////////////////////////////////////////////////////////////////////////////

class SelectFromEnumPage : public InternalPage {
public:
    static void pushSelectFromEnumPage(
        AppContext *appContext,
        const EnumItem *enumItems,
        uint16_t currentValue, 
        bool (*disabledCallback)(uint16_t value), 
        void (*onSet)(uint16_t),
        bool smallFont = false,
        bool showRadioButtonIcon = true
    );

    static void pushSelectFromEnumPage(
        AppContext *appContext,
        void (*enumDefinitionFunc)(DataOperationEnum operation, const WidgetCursor &widgetCursor, Value &value),
        uint16_t currentValue,
        bool (*disabledCallback)(uint16_t value),
        void (*onSet)(uint16_t),
        bool smallFont = false,
        bool showRadioButtonIcon = true
    );

    static const EnumItem *getActiveSelectEnumDefinition();
    static void selectEnumItem();
    static void popSelectFromEnumPage();

    void init(
        AppContext *appContext_,
        const EnumItem *enumDefinition_,
        uint16_t currentValue_,
    	bool (*disabledCallback_)(uint16_t value),
        void (*onSet_)(uint16_t),
        bool smallFont_,
        bool showRadioButtonIcon_
    );
    
    void init(
        AppContext *appContext_,
        void (*enumDefinitionFunc)(DataOperationEnum operation, const WidgetCursor &widgetCursor, Value &value),
        uint16_t currentValue_,
        bool (*disabledCallback_)(uint16_t value),
        void (*onSet_)(uint16_t),
        bool smallFont_,
        bool showRadioButtonIcon_
    );

    void init();

    void updateInternalPage();
    WidgetCursor findWidgetInternalPage(int x, int y, bool clicked);

    const EnumItem *getEnumDefinition() {
        return enumDefinition;
    }

    AppContext *appContext;

private:
    const EnumItem *enumDefinition;
    void (*enumDefinitionFunc)(DataOperationEnum operation, const WidgetCursor &widgetCursor, Value &value);

    int numItems;
    int numColumns;
    int itemWidth;
    int itemHeight;

    int activeItemIndex;

    bool dirty;

    uint16_t getValue(int i);
    bool getLabel(int i, char *text, int count);

    uint16_t currentValue;
    bool (*disabledCallback)(uint16_t value);
    void (*onSet)(uint16_t);

    bool smallFont;
    bool showRadioButtonIcon;

    bool calcSize();
    void findPagePosition();

    bool isDisabled(int i);

    void getItemPosition(int itemIndex, int &x, int &y);
    void getItemLabel(int itemIndex, char *text, int count);

	void doSelectEnumItem();
};

////////////////////////////////////////////////////////////////////////////////

enum MenuType {
    MENU_TYPE_BUTTON
};

static const size_t MAX_MENU_ITEMS = 4;

void showMenu(AppContext *appContext, const char *message, MenuType menuType, const char **menuItems, void(*callback)(int));

class MenuWithButtonsPage : public InternalPage {
public:
    static MenuWithButtonsPage *create(AppContext *appContext, const char *message, const char **menuItems, void (*callback)(int));

    void updateInternalPage();
    WidgetCursor findWidgetInternalPage(int x, int y, bool clicked);

    static void executeAction();

private:
    AppContext *m_appContext;
    RectangleWidget m_containerRectangleWidget;
    TextWidget m_messageTextWidget;
    TextWidget m_buttonTextWidgets[MAX_MENU_ITEMS];
    size_t m_numButtonTextWidgets;
    void (*m_callback)(int);

    void init(AppContext *appContext, const char *message, const char **menuItems, void(*callback)(int));
};

} // namespace gui
} // namespace eez