#include <history.h>

Collaboration diagram for ImageModel:

[legend]

Public Member Functions
	ImageModel ()

void	CopyPrevious (void)

void	Undo (void)

void	Redo (void)

void	ResetToPrevious (void)

void	ClearHistory (void)

void	Insert (HBITMAP hbm)

void	Crop (int nWidth, int nHeight, int nOffsetX=0, int nOffsetY=0)

void	SaveImage (LPTSTR lpFileName)

BOOL	IsImageSaved ()

BOOL	HasUndoSteps ()

BOOL	HasRedoSteps ()

void	StretchSkew (int nStretchPercentX, int nStretchPercentY, int nSkewDegX=0, int nSkewDegY=0)

int	GetWidth ()

int	GetHeight ()

void	InvertColors ()

void	Clear (COLORREF color=0x00ffffff)

HDC	GetDC ()

void	FlipHorizontally ()

void	FlipVertically ()

void	RotateNTimes90Degrees (int iN)

Public Attributes
HBITMAP	hBms [HISTORYSIZE]

Private Member Functions
void	NotifyDimensionsChanged ()

void	NotifyImageChanged ()

Private Attributes
HDC	hDrawingDC

int	currInd

int	undoSteps

int	redoSteps

Detailed Description

Definition at line 11 of file history.h.

Constructor & Destructor Documentation

◆ ImageModel()

ImageModel::ImageModel ( )

Definition at line 25 of file history.cpp.

 {
     currInd = 0;
     undoSteps = 0;
     redoSteps = 0;
     imageSaved = TRUE;
 
     // prepare a minimal usable bitmap
     int imgXRes = 1;
     int imgYRes = 1;
 
     hDrawingDC = CreateCompatibleDC(NULL);
     SelectObject(hDrawingDC, CreatePen(PS_SOLID, 0, paletteModel.GetFgColor()));
     SelectObject(hDrawingDC, CreateSolidBrush(paletteModel.GetBgColor()));
 
     hBms[0] = CreateDIBWithProperties(imgXRes, imgYRes);
     SelectObject(hDrawingDC, hBms[0]);
     Rectangle(hDrawingDC, 0 - 1, 0 - 1, imgXRes + 1, imgYRes + 1);
 }

Member Function Documentation

◆ Clear()

void ImageModel::Clear ( COLORREF color = 0x00ffffff )

Definition at line 212 of file history.cpp.

 {
     Rectangle(hDrawingDC, 0 - 1, 0 - 1, GetWidth() + 1, GetHeight() + 1);
     NotifyImageChanged();
 }

◆ ClearHistory()

void ImageModel::ClearHistory ( void )

Definition at line 102 of file history.cpp.

 {
     undoSteps = 0;
     redoSteps = 0;
 }

Referenced by SetBitmapAndInfo().

◆ CopyPrevious()

void ImageModel::CopyPrevious ( void )

Definition at line 45 of file history.cpp.

 {
     DeleteObject(hBms[(currInd + 1) % HISTORYSIZE]);
     hBms[(currInd + 1) % HISTORYSIZE] = (HBITMAP) CopyImage(hBms[currInd], IMAGE_BITMAP, 0, 0, LR_COPYRETURNORG);
     currInd = (currInd + 1) % HISTORYSIZE;
     if (undoSteps < HISTORYSIZE - 1)
         undoSteps++;
     redoSteps = 0;
     SelectObject(hDrawingDC, hBms[currInd]);
     imageSaved = FALSE;
 }

Referenced by endPaintingL(), FlipHorizontally(), FlipVertically(), CMainWindow::InsertSelectionFromHBITMAP(), InvertColors(), CMainWindow::OnCommand(), RotateNTimes90Degrees(), startPaintingL(), startPaintingR(), and whilePaintingL().

◆ Crop()

void ImageModel::Crop	(	int	nWidth,
		int	nHeight,
		int	nOffsetX = `0`,
		int	nOffsetY = `0`
	)

Definition at line 124 of file history.cpp.

 {
     HDC hdc;
     HPEN oldPen;
     HBRUSH oldBrush;
     int oldWidth = GetWidth();
     int oldHeight = GetHeight();
 
     if (nWidth <= 0)
         nWidth = 1;
     if (nHeight <= 0)
         nHeight = 1;
 
     SelectObject(hDrawingDC, hBms[currInd]);
     DeleteObject(hBms[(currInd + 1) % HISTORYSIZE]);
     hBms[(currInd + 1) % HISTORYSIZE] = CreateDIBWithProperties(nWidth, nHeight);
     currInd = (currInd + 1) % HISTORYSIZE;
     if (undoSteps < HISTORYSIZE - 1)
         undoSteps++;
     redoSteps = 0;
 
     hdc = CreateCompatibleDC(hDrawingDC);
     SelectObject(hdc, hBms[currInd]);
 
     oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, 1, paletteModel.GetBgColor()));
     oldBrush = (HBRUSH) SelectObject(hdc, CreateSolidBrush(paletteModel.GetBgColor()));
     Rectangle(hdc, 0, 0, nWidth, nHeight);
     BitBlt(hdc, -nOffsetX, -nOffsetY, GetWidth(), GetHeight(), hDrawingDC, 0, 0, SRCCOPY);
     DeleteObject(SelectObject(hdc, oldBrush));
     DeleteObject(SelectObject(hdc, oldPen));
     DeleteDC(hdc);
     SelectObject(hDrawingDC, hBms[currInd]);
 
     if (GetWidth() != oldWidth || GetHeight() != oldHeight)
         NotifyDimensionsChanged();
     NotifyImageChanged();
 }

Referenced by _tWinMain(), CMainWindow::InsertSelectionFromHBITMAP(), CMainWindow::OnCommand(), and CSizeboxWindow::OnLButtonUp().

◆ FlipHorizontally()

void ImageModel::FlipHorizontally ( )

Definition at line 223 of file history.cpp.

 {
     CopyPrevious();
     StretchBlt(hDrawingDC, GetWidth() - 1, 0, -GetWidth(), GetHeight(), GetDC(), 0, 0,
                GetWidth(), GetHeight(), SRCCOPY);
     NotifyImageChanged();
 }

Referenced by CMainWindow::OnCommand().

◆ FlipVertically()

void ImageModel::FlipVertically ( )

Definition at line 231 of file history.cpp.

 {
     CopyPrevious();
     StretchBlt(hDrawingDC, 0, GetHeight() - 1, GetWidth(), -GetHeight(), GetDC(), 0, 0,
                GetWidth(), GetHeight(), SRCCOPY);
     NotifyImageChanged();
 }

Referenced by CMainWindow::OnCommand().

◆ GetDC()

HDC ImageModel::GetDC ( )

Definition at line 218 of file history.cpp.

 {
     return hDrawingDC;
 }

Referenced by CImgAreaWindow::cancelDrawing(), FlipHorizontally(), FlipVertically(), CMainWindow::OnCommand(), CImgAreaWindow::OnLButtonDown(), CImgAreaWindow::OnLButtonUp(), CSelectionWindow::OnMouseMove(), CImgAreaWindow::OnMouseMove(), CMiniatureWindow::OnPaint(), CFullscreenWindow::OnPaint(), CImgAreaWindow::OnPaint(), CImgAreaWindow::OnRButtonDown(), CImgAreaWindow::OnRButtonUp(), and RotateNTimes90Degrees().

◆ GetHeight()

int ImageModel::GetHeight ( )

Definition at line 199 of file history.cpp.

 {
     return GetDIBHeight(hBms[currInd]);
 }

Referenced by _tWinMain(), Clear(), Crop(), FlipHorizontally(), FlipVertically(), Insert(), CMainWindow::InsertSelectionFromHBITMAP(), InvertColors(), CMainWindow::OnCommand(), CAttributesDialog::OnDefault(), CScrollboxWindow::OnHScroll(), CAttributesDialog::OnInitDialog(), CSizeboxWindow::OnLButtonUp(), CSizeboxWindow::OnMouseMove(), CImgAreaWindow::OnMouseMove(), CMiniatureWindow::OnPaint(), CFullscreenWindow::OnPaint(), CImgAreaWindow::OnPaint(), CImgAreaWindow::OnSize(), CScrollboxWindow::OnVScroll(), Redo(), RotateNTimes90Degrees(), StretchSkew(), Undo(), updateCanvasAndScrollbars(), whilePaintingL(), and zoomTo().

◆ GetWidth()

int ImageModel::GetWidth ( )

Definition at line 194 of file history.cpp.

 {
     return GetDIBWidth(hBms[currInd]);
 }

Referenced by _tWinMain(), Clear(), Crop(), FlipHorizontally(), FlipVertically(), Insert(), CMainWindow::InsertSelectionFromHBITMAP(), InvertColors(), CMainWindow::OnCommand(), CAttributesDialog::OnDefault(), CScrollboxWindow::OnHScroll(), CAttributesDialog::OnInitDialog(), CSizeboxWindow::OnLButtonUp(), CSizeboxWindow::OnMouseMove(), CImgAreaWindow::OnMouseMove(), CMiniatureWindow::OnPaint(), CFullscreenWindow::OnPaint(), CImgAreaWindow::OnPaint(), CImgAreaWindow::OnSize(), CScrollboxWindow::OnVScroll(), Redo(), RotateNTimes90Degrees(), StretchSkew(), Undo(), updateCanvasAndScrollbars(), whilePaintingL(), and zoomTo().

◆ HasRedoSteps()

BOOL ImageModel::HasRedoSteps ( )

Definition at line 177 of file history.cpp.

 {
     return redoSteps > 0;
 }

Referenced by CMainWindow::OnInitMenuPopup().

◆ HasUndoSteps()

BOOL ImageModel::HasUndoSteps ( )

Definition at line 172 of file history.cpp.

 {
     return undoSteps > 0;
 }

Referenced by CMainWindow::OnInitMenuPopup().

◆ Insert()

void ImageModel::Insert ( HBITMAP hbm )

Definition at line 108 of file history.cpp.

 {
     int oldWidth = GetWidth();
     int oldHeight = GetHeight();
     DeleteObject(hBms[(currInd + 1) % HISTORYSIZE]);
     hBms[(currInd + 1) % HISTORYSIZE] = hbm;
     currInd = (currInd + 1) % HISTORYSIZE;
     if (undoSteps < HISTORYSIZE - 1)
         undoSteps++;
     redoSteps = 0;
     SelectObject(hDrawingDC, hBms[currInd]);
     if (GetWidth() != oldWidth || GetHeight() != oldHeight)
         NotifyDimensionsChanged();
     NotifyImageChanged();
 }

Referenced by CMainWindow::OnCommand(), SetBitmapAndInfo(), and StretchSkew().

◆ InvertColors()

void ImageModel::InvertColors ( )

Definition at line 204 of file history.cpp.

 {
     RECT rect = {0, 0, GetWidth(), GetHeight()};
     CopyPrevious();
     InvertRect(hDrawingDC, &rect);
     NotifyImageChanged();
 }

Referenced by CMainWindow::OnCommand().

◆ IsImageSaved()

BOOL ImageModel::IsImageSaved ( )

Definition at line 167 of file history.cpp.

 {
     return imageSaved;
 }

Referenced by CMainWindow::ConfirmSave().

◆ NotifyDimensionsChanged()

void ImageModel::NotifyDimensionsChanged ( )

private

Definition at line 15 of file history.cpp.

 {
     imageArea.SendMessage(WM_IMAGEMODELDIMENSIONSCHANGED);
 }

Referenced by Crop(), Insert(), Redo(), StretchSkew(), and Undo().

◆ NotifyImageChanged()

void ImageModel::NotifyImageChanged ( )

private

Definition at line 20 of file history.cpp.

 {
     imageArea.SendMessage(WM_IMAGEMODELIMAGECHANGED);
 }

Referenced by Clear(), Crop(), FlipHorizontally(), FlipVertically(), Insert(), InvertColors(), Redo(), ResetToPrevious(), RotateNTimes90Degrees(), StretchSkew(), and Undo().

◆ Redo()

void ImageModel::Redo ( void )

Definition at line 75 of file history.cpp.

 {
     if (redoSteps > 0)
     {
         int oldWidth = GetWidth();
         int oldHeight = GetHeight();
         selectionWindow.ShowWindow(SW_HIDE);
         currInd = (currInd + 1) % HISTORYSIZE;
         SelectObject(hDrawingDC, hBms[currInd]);
         redoSteps--;
         if (undoSteps < HISTORYSIZE - 1)
             undoSteps++;
         if (GetWidth() != oldWidth || GetHeight() != oldHeight)
             NotifyDimensionsChanged();
         NotifyImageChanged();
     }
 }

Referenced by CMainWindow::OnCommand().

◆ ResetToPrevious()

void ImageModel::ResetToPrevious ( void )

Definition at line 93 of file history.cpp.

 {
     DeleteObject(hBms[currInd]);
     hBms[currInd] =
         (HBITMAP) CopyImage(hBms[(currInd + HISTORYSIZE - 1) % HISTORYSIZE], IMAGE_BITMAP, 0, 0, LR_COPYRETURNORG);
     SelectObject(hDrawingDC, hBms[currInd]);
     NotifyImageChanged();
 }

Referenced by SelectionModel::CalculateBoundingBoxAndContents(), CImgAreaWindow::cancelDrawing(), endPaintingL(), endPaintingR(), CSelectionWindow::OnMouseMove(), whilePaintingL(), and whilePaintingR().

◆ RotateNTimes90Degrees()

void ImageModel::RotateNTimes90Degrees ( int iN )

Definition at line 239 of file history.cpp.

 {
     if (iN == 2)
     {
         CopyPrevious();
         StretchBlt(hDrawingDC, GetWidth() - 1, GetHeight() - 1, -GetWidth(), -GetHeight(), GetDC(),
                    0, 0, GetWidth(), GetHeight(), SRCCOPY);
     }
     NotifyImageChanged();
 }

Referenced by CMainWindow::OnCommand().

◆ SaveImage()

void ImageModel::SaveImage ( LPTSTR lpFileName )

Definition at line 162 of file history.cpp.

 {
     SaveDIBToFile(hBms[currInd], lpFileName, hDrawingDC);
 }

Referenced by CMainWindow::saveImage().

◆ StretchSkew()

void ImageModel::StretchSkew	(	int	nStretchPercentX,
		int	nStretchPercentY,
		int	nSkewDegX = `0`,
		int	nSkewDegY = `0`
	)

Definition at line 182 of file history.cpp.

 {
     int oldWidth = GetWidth();
     int oldHeight = GetHeight();
     Insert((HBITMAP) CopyImage(hBms[currInd], IMAGE_BITMAP,
            GetWidth() * nStretchPercentX / 100,
            GetHeight() * nStretchPercentY / 100, 0));
     if (GetWidth() != oldWidth || GetHeight() != oldHeight)
         NotifyDimensionsChanged();
     NotifyImageChanged();
 }

Referenced by CMainWindow::OnCommand().

◆ Undo()

void ImageModel::Undo ( void )

Definition at line 57 of file history.cpp.

 {
     if (undoSteps > 0)
     {
         int oldWidth = GetWidth();
         int oldHeight = GetHeight();
         selectionWindow.ShowWindow(SW_HIDE);
         currInd = (currInd + HISTORYSIZE - 1) % HISTORYSIZE;
         SelectObject(hDrawingDC, hBms[currInd]);
         undoSteps--;
         if (redoSteps < HISTORYSIZE - 1)
             redoSteps++;
         if (GetWidth() != oldWidth || GetHeight() != oldHeight)
             NotifyDimensionsChanged();
         NotifyImageChanged();
     }
 }

Referenced by CImgAreaWindow::cancelDrawing(), CSelectionWindow::OnCaptureChanged(), CMainWindow::OnCommand(), CImgAreaWindow::OnLButtonDown(), and CImgAreaWindow::OnRButtonDown().

Member Data Documentation

◆ currInd

int ImageModel::currInd

private

Definition at line 20 of file history.h.

Referenced by CopyPrevious(), Crop(), GetHeight(), GetWidth(), ImageModel(), Insert(), Redo(), ResetToPrevious(), SaveImage(), StretchSkew(), and Undo().

◆ hBms

HBITMAP ImageModel::hBms[HISTORYSIZE]

Definition at line 18 of file history.h.

Referenced by CopyPrevious(), Crop(), GetHeight(), GetWidth(), ImageModel(), Insert(), Redo(), ResetToPrevious(), SaveImage(), StretchSkew(), and Undo().

◆ hDrawingDC

HDC ImageModel::hDrawingDC

private

Definition at line 16 of file history.h.

Referenced by Clear(), CopyPrevious(), Crop(), FlipHorizontally(), FlipVertically(), GetDC(), ImageModel(), Insert(), InvertColors(), Redo(), ResetToPrevious(), RotateNTimes90Degrees(), SaveImage(), and Undo().

◆ redoSteps

int ImageModel::redoSteps

private

Definition at line 22 of file history.h.

Referenced by ClearHistory(), CopyPrevious(), Crop(), HasRedoSteps(), ImageModel(), Insert(), Redo(), and Undo().

◆ undoSteps

int ImageModel::undoSteps

private

Definition at line 21 of file history.h.

Referenced by ClearHistory(), CopyPrevious(), Crop(), HasUndoSteps(), ImageModel(), Insert(), Redo(), and Undo().

The documentation for this class was generated from the following files:

base/applications/mspaint/history.h
base/applications/mspaint/history.cpp

Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ImageModel()

Member Function Documentation

◆ Clear()

◆ ClearHistory()

◆ CopyPrevious()

◆ Crop()

◆ FlipHorizontally()

◆ FlipVertically()

◆ GetDC()

◆ GetHeight()

◆ GetWidth()

◆ HasRedoSteps()

◆ HasUndoSteps()

◆ Insert()

◆ InvertColors()

◆ IsImageSaved()

◆ NotifyDimensionsChanged()

◆ NotifyImageChanged()

◆ Redo()

◆ ResetToPrevious()

◆ RotateNTimes90Degrees()

◆ SaveImage()

◆ StretchSkew()

◆ Undo()

Member Data Documentation

◆ currInd

◆ hBms

◆ hDrawingDC

◆ redoSteps

◆ undoSteps