/** @file
  This file is part of OpenCanopy, OpenCore GUI.

  Copyright (c) 2018-2019, Download-Fritz. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-3-Clause
**/

#ifndef OPEN_CANOPY_H
#define OPEN_CANOPY_H

#include <Library/OcBootManagementLib.h>
#include <Protocol/GraphicsOutput.h>
#include <Protocol/SimpleTextIn.h>

typedef struct GUI_OBJ_             GUI_OBJ;
typedef struct GUI_DRAWING_CONTEXT_ GUI_DRAWING_CONTEXT;

struct _BOOT_PICKER_GUI_CONTEXT;
typedef struct _BOOT_PICKER_GUI_CONTEXT BOOT_PICKER_GUI_CONTEXT;

enum {
  GuiPointerPrimaryDown,
  GuiPointerPrimaryHold,
  GuiPointerPrimaryUp
};

typedef UINT8 GUI_PTR_EVENT;

typedef
VOID
(*GUI_OBJ_DRAW)(
  IN OUT GUI_OBJ                 *This,
  IN OUT GUI_DRAWING_CONTEXT     *DrawContext,
  IN     BOOT_PICKER_GUI_CONTEXT *Context,
  IN     INT64                   BaseX,
  IN     INT64                   BaseY,
  IN     UINT32                  OffsetX,
  IN     UINT32                  OffsetY,
  IN     UINT32                  Width,
  IN     UINT32                  Height,
  IN     BOOLEAN                 RequestDraw
  );

typedef
GUI_OBJ *
(*GUI_OBJ_PTR_EVENT)(
  IN OUT GUI_OBJ                 *This,
  IN OUT GUI_DRAWING_CONTEXT     *DrawContext,
  IN     BOOT_PICKER_GUI_CONTEXT *Context,
  IN     GUI_PTR_EVENT           Event,
  IN     INT64                   BaseX,
  IN     INT64                   BaseY,
  IN     INT64                   OffsetX,
  IN     INT64                   OffsetY
  );

typedef
VOID
(*GUI_OBJ_KEY_EVENT)(
  IN OUT GUI_OBJ                 *This,
  IN OUT GUI_DRAWING_CONTEXT     *DrawContext,
  IN     BOOT_PICKER_GUI_CONTEXT *Context,
  IN     INT64                   BaseX,
  IN     INT64                   BaseY,
  IN     INTN                    Key,
  IN     BOOLEAN                 Modifier
  );

typedef
BOOLEAN
(*GUI_ANIMATE)(
  IN     BOOT_PICKER_GUI_CONTEXT *Context,
  IN OUT GUI_DRAWING_CONTEXT     *DrawContext,
  IN     UINT64                  CurrentTime
  );

typedef struct {
  LIST_ENTRY  Link;
  VOID        *Context;
  GUI_ANIMATE Animate;
} GUI_ANIMATION;

struct GUI_OBJ_ {
  INT64             OffsetX;
  INT64             OffsetY;
  UINT32            Width;
  UINT32            Height;
  GUI_OBJ_DRAW      Draw;
  GUI_OBJ_PTR_EVENT PtrEvent;
  GUI_OBJ_KEY_EVENT KeyEvent;
  LIST_ENTRY        Children;
};

typedef struct {
  LIST_ENTRY Link;
  GUI_OBJ    *Parent;
  GUI_OBJ    Obj;
} GUI_OBJ_CHILD;

typedef struct {
  UINT32                        Width;
  UINT32                        Height;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Buffer;
} GUI_IMAGE;

typedef struct GUI_SCREEN_CURSOR_ GUI_SCREEN_CURSOR;

typedef
CONST GUI_IMAGE *
(*GUI_CURSOR_GET_IMAGE)(
  IN OUT GUI_SCREEN_CURSOR       *This,
  IN     BOOT_PICKER_GUI_CONTEXT *Context
  );

typedef
BOOLEAN
(*GUI_EXIT_LOOP)(
  IN BOOT_PICKER_GUI_CONTEXT *Context
  );

struct GUI_SCREEN_CURSOR_ {
  UINT32 X;
  UINT32 Y;
};

struct GUI_DRAWING_CONTEXT_ {
  //
  // Scene objects
  //
  GUI_OBJ              *Screen;
  GUI_CURSOR_GET_IMAGE GetCursorImage;
  GUI_EXIT_LOOP        ExitLoop;
  LIST_ENTRY           Animations;
  VOID                 *GuiContext;
  UINT8                Scale;
};

EFI_STATUS
GuiPngToImage (
  OUT GUI_IMAGE  *Image,
  IN  VOID       *ImageData,
  IN  UINTN      ImageDataSize,
  IN  BOOLEAN    PremultiplyAlpha
  );
  
EFI_STATUS
GuiIcnsToImageIcon (
  OUT GUI_IMAGE  *Image,
  IN  VOID       *IcnsImage,
  IN  UINT32     IcnsImageSize,
  IN  UINT8      Scale,
  IN  UINT32     MatchWidth,
  IN  UINT32     MatchHeight,
  IN  BOOLEAN    AllowLess
  );

EFI_STATUS
GuiLabelToImage (
  OUT GUI_IMAGE *Image,
  IN  VOID      *RawData,
  IN  UINT32    DataLength,
  IN  UINT8     Scale,
  IN  BOOLEAN   Inverted
  );

VOID
GuiObjDrawDelegate (
  IN OUT GUI_OBJ                 *This,
  IN OUT GUI_DRAWING_CONTEXT     *DrawContext,
  IN     BOOT_PICKER_GUI_CONTEXT *Context,
  IN     INT64                   BaseX,
  IN     INT64                   BaseY,
  IN     UINT32                  OffsetX,
  IN     UINT32                  OffsetY,
  IN     UINT32                  Width,
  IN     UINT32                  Height,
  IN     BOOLEAN                 ParentRedrawn
  );

GUI_OBJ *
GuiObjDelegatePtrEvent (
  IN OUT GUI_OBJ                 *This,
  IN OUT GUI_DRAWING_CONTEXT     *DrawContext,
  IN     BOOT_PICKER_GUI_CONTEXT *Context,
  IN     GUI_PTR_EVENT           Event,
  IN     INT64                   BaseX,
  IN     INT64                   BaseY,
  IN     INT64                   OffsetX,
  IN     INT64                   OffsetY
  );

BOOLEAN
GuiClipChildBounds (
  IN     INT64   ObjectOffset,
  IN     UINT32  ObjectLength,
  IN OUT UINT32  *ReqOffset,
  IN OUT UINT32  *ReqLength
  );

VOID
GuiDrawToBuffer (
  IN     CONST GUI_IMAGE      *Image,
  IN     UINT8                Opacity,
  IN     BOOLEAN              Fill,
  IN OUT GUI_DRAWING_CONTEXT  *DrawContext,
  IN     INT64                BaseX,
  IN     INT64                BaseY,
  IN     UINT32               OffsetX,
  IN     UINT32               OffsetY,
  IN     UINT32               Width,
  IN     UINT32               Height,
  IN     BOOLEAN              RequestDraw
  );

VOID
GuiDrawScreen (
  IN OUT GUI_DRAWING_CONTEXT  *DrawContext,
  IN     INT64                X,
  IN     INT64                Y,
  IN     UINT32               Width,
  IN     UINT32               Height,
  IN     BOOLEAN              RequestDraw
  );

VOID
GuiRedrawObject (
  IN OUT GUI_OBJ              *Obj,
  IN OUT GUI_DRAWING_CONTEXT  *DrawContext,
  IN     INT64                BaseX,
  IN     INT64                BaseY,
  IN     BOOLEAN              RequestDraw
  );

VOID
GuiViewInitialize (
  OUT    GUI_DRAWING_CONTEXT     *DrawContext,
  IN OUT GUI_OBJ                 *Screen,
  IN     GUI_CURSOR_GET_IMAGE    CursorDraw,
  IN     GUI_EXIT_LOOP           ExitLoop,
  IN     BOOT_PICKER_GUI_CONTEXT *GuiContext
  );

VOID
GuiViewDeinitialize (
  IN OUT GUI_DRAWING_CONTEXT   *DrawContext
  );

CONST GUI_SCREEN_CURSOR *
GuiViewCurrentCursor (
  IN OUT GUI_DRAWING_CONTEXT  *DrawContext
  );

VOID
GuiDrawLoop (
  IN OUT GUI_DRAWING_CONTEXT  *DrawContext,
  IN     UINT32               TimeoutSeconds
  );

VOID
GuiClearScreen (
  IN OUT GUI_DRAWING_CONTEXT           *DrawContext,
  IN     EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Pixel
  );

EFI_STATUS
GuiLibConstruct (
  IN OC_PICKER_CONTEXT  *PickerContext,
  IN UINT32             CursorDefaultX,
  IN UINT32             CursorDefaultY
  );

VOID
GuiLibDestruct (
  VOID
  );

VOID
GuiBlendPixel (
  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL        *BackPixel,
  IN     CONST EFI_GRAPHICS_OUTPUT_BLT_PIXEL  *FrontPixel,
  IN     UINT8                                Opacity
  );

EFI_STATUS
GuiCreateHighlightedImage (
  OUT GUI_IMAGE                            *SelectedImage,
  IN  CONST GUI_IMAGE                      *SourceImage,
  IN  CONST EFI_GRAPHICS_OUTPUT_BLT_PIXEL  *HighlightPixel
  );

typedef enum {
  GuiInterpolTypeLinear,
  GuiInterpolTypeSmooth
} GUI_INTERPOL_TYPE;

typedef struct {
  GUI_INTERPOL_TYPE Type;
  UINT64            StartTime;
  UINT64            Duration;
  UINT32            StartValue;
  UINT32            EndValue;
} GUI_INTERPOLATION;

UINT32
GuiGetInterpolatedValue (
  IN CONST GUI_INTERPOLATION  *Interpol,
  IN       UINT64             CurrentTime
  );

#endif // OPEN_CANOPY_H