MRRibbonButtonDrawer.h

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#pragma once
#include "MRRibbonMenuItem.h"
#include "MRRibbonIcons.h"
#include "MRImGui.h"
#include <functional>
 
namespace MR
{
 
 
struct MenuItemInfo;
class RibbonMenu;
class ShortcutManager;
class ImGuiImage;
 
struct DrawButtonParams
{
    enum class SizeType
    {
        Big, 
        SmallText, 
        Small 
    } sizeType{ SizeType::Big }; 
 
    ImVec2 itemSize; 
    float iconSize{ 0.f }; 
    enum RootType
    {
        Ribbon, 
        Toolbar, 
        Header 
    } rootType{ RootType::Ribbon };

    bool forceHovered = false;
    bool forcePressed = false;
    bool* isPressed = nullptr;
};
 
struct CustomButtonParameters
{
    std::function<int( bool, bool )> pushColorsCb;
    RibbonIcons::IconType iconType;
};

class MRVIEWER_CLASS RibbonButtonDrawer
{
public:
    MRVIEWER_API static void InitGradientTexture();
    enum class TextureType
    {
        Mono,
        Gradient,
        RainbowRect,
        Count
    };
    MRVIEWER_API static std::unique_ptr<ImGuiImage>& GetTexture( TextureType type );
 

    MRVIEWER_API bool GradientCheckboxItem( const MenuItemInfo& item, bool* value ) const;
 

    MRVIEWER_API static bool CustomCollapsingHeader( const char* label, ImGuiTreeNodeFlags flags = 0, int issueCount = 0 );
 
    struct ButtonItemWidth
    {
        float baseWidth{ 0.0f };
        float additionalWidth{ 0.0f }; 
    };
    MRVIEWER_API ButtonItemWidth calcItemWidth( const MenuItemInfo& item, DrawButtonParams::SizeType sizeType ) const;

    MRVIEWER_API void drawButtonItem( const MenuItemInfo& item, const DrawButtonParams& params ) const;

    MRVIEWER_API void drawCustomButtonItem( const MenuItemInfo& item, const CustomButtonParameters& customParam,
        const DrawButtonParams& params ) const;

    MRVIEWER_API void drawButtonIcon( const MenuItemInfo& item, const DrawButtonParams& params ) const;

    MRVIEWER_API bool drawTabArrowButton( const char* icon, const ImVec2& size, float iconSize );

    MRVIEWER_API void setMonochrome( const std::optional<Color>& color );

    void setOnPressAction( std::function<void( std::shared_ptr<RibbonMenuItem>, const std::string& )> action ) { onPressAction_ = action; };
    void setGetterRequirements( std::function<std::string( std::shared_ptr<RibbonMenuItem> )> getterRequirements ) { getRequirements_ = getterRequirements; };
 
    void setMenu( RibbonMenu* menu ) { menu_ = menu; };
    void setShortcutManager( const ShortcutManager* shortcutManager ) { shortcutManager_ = shortcutManager; };

    MRVIEWER_API int pushRibbonButtonColors( bool enabled, bool active, bool forceHovered, DrawButtonParams::RootType rootType ) const;
 
private:
    void drawButtonDropItem_( const MenuItemInfo& item, const DrawButtonParams& params ) const;
    void drawDropList_( const std::shared_ptr<RibbonMenuItem>& baseDropItem ) const;
    void drawTooltip_( const MenuItemInfo& item, const std::string& requirements ) const;
 
    std::function<void( std::shared_ptr<RibbonMenuItem>, const std::string& )> onPressAction_ = []( std::shared_ptr<RibbonMenuItem>, const std::string& ) {};
    std::function<std::string( std::shared_ptr<RibbonMenuItem> )> getRequirements_ = []( std::shared_ptr<RibbonMenuItem> ) { return std::string(); };
    RibbonMenu* menu_ = nullptr;
    const ShortcutManager* shortcutManager_ = nullptr;
 
    std::optional<Color> monochrome_;
 
    static std::vector<std::unique_ptr<MR::ImGuiImage>> textures_;
};
 
}