mirror of
https://github.com/reactos/reactos.git
synced 2024-08-20 02:13:29 +00:00
![Katayama Hirofumi MZ](/assets/img/avatar_default.png)
- Save the position and size of the miniature window. - Improve drawing of the miniature window. - Sync with the canvas. CORE-18867
450 lines
12 KiB
C++
450 lines
12 KiB
C++
/*
|
|
* PROJECT: PAINT for ReactOS
|
|
* LICENSE: LGPL
|
|
* FILE: base/applications/mspaint/selectionmodel.cpp
|
|
* PURPOSE: Keep track of selection parameters, notify listeners
|
|
* PROGRAMMERS: Benedikt Freisen
|
|
* Katayama Hirofumi MZ
|
|
*/
|
|
|
|
#include "precomp.h"
|
|
|
|
SelectionModel selectionModel;
|
|
|
|
/* FUNCTIONS ********************************************************/
|
|
|
|
SelectionModel::SelectionModel()
|
|
: m_hbmColor(NULL)
|
|
, m_hbmMask(NULL)
|
|
, m_ptStack(NULL)
|
|
, m_iPtSP(0)
|
|
, m_bShow(FALSE)
|
|
{
|
|
::SetRectEmpty(&m_rc);
|
|
m_ptHit.x = m_ptHit.y = -1;
|
|
}
|
|
|
|
SelectionModel::~SelectionModel()
|
|
{
|
|
ClearColor();
|
|
ClearMask();
|
|
ResetPtStack();
|
|
}
|
|
|
|
void SelectionModel::ResetPtStack()
|
|
{
|
|
if (m_ptStack)
|
|
{
|
|
free(m_ptStack);
|
|
m_ptStack = NULL;
|
|
}
|
|
m_iPtSP = 0;
|
|
}
|
|
|
|
void SelectionModel::PushToPtStack(POINT pt)
|
|
{
|
|
#define GROW_COUNT 256
|
|
if (m_iPtSP % GROW_COUNT == 0)
|
|
{
|
|
INT nNewCount = m_iPtSP + GROW_COUNT;
|
|
LPPOINT pptNew = (LPPOINT)realloc(m_ptStack, sizeof(POINT) * nNewCount);
|
|
if (pptNew == NULL)
|
|
return;
|
|
m_ptStack = pptNew;
|
|
}
|
|
m_ptStack[m_iPtSP] = pt;
|
|
m_iPtSP++;
|
|
#undef GROW_COUNT
|
|
}
|
|
|
|
void SelectionModel::ShiftPtStack(BOOL bPlus)
|
|
{
|
|
if (bPlus)
|
|
{
|
|
for (INT i = 0; i < m_iPtSP; ++i)
|
|
{
|
|
POINT& pt = m_ptStack[i];
|
|
pt.x += m_rc.left;
|
|
pt.y += m_rc.top;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (INT i = 0; i < m_iPtSP; ++i)
|
|
{
|
|
POINT& pt = m_ptStack[i];
|
|
pt.x -= m_rc.left;
|
|
pt.y -= m_rc.top;
|
|
}
|
|
}
|
|
}
|
|
|
|
void SelectionModel::BuildMaskFromPtStack()
|
|
{
|
|
CRect rc = { MAXLONG, MAXLONG, 0, 0 };
|
|
for (INT i = 0; i < m_iPtSP; ++i)
|
|
{
|
|
POINT& pt = m_ptStack[i];
|
|
rc.left = min(pt.x, rc.left);
|
|
rc.top = min(pt.y, rc.top);
|
|
rc.right = max(pt.x, rc.right);
|
|
rc.bottom = max(pt.y, rc.bottom);
|
|
}
|
|
rc.right += 1;
|
|
rc.bottom += 1;
|
|
|
|
m_rc = rc;
|
|
|
|
ShiftPtStack(FALSE);
|
|
|
|
ClearMask();
|
|
|
|
HDC hdcMem = ::CreateCompatibleDC(NULL);
|
|
m_hbmMask = ::CreateBitmap(rc.Width(), rc.Height(), 1, 1, NULL);
|
|
HGDIOBJ hbmOld = ::SelectObject(hdcMem, m_hbmMask);
|
|
FillRect(hdcMem, &rc, (HBRUSH)::GetStockObject(BLACK_BRUSH));
|
|
HGDIOBJ hPenOld = ::SelectObject(hdcMem, GetStockObject(NULL_PEN));
|
|
HGDIOBJ hbrOld = ::SelectObject(hdcMem, GetStockObject(WHITE_BRUSH));
|
|
::Polygon(hdcMem, m_ptStack, m_iPtSP);
|
|
::SelectObject(hdcMem, hbrOld);
|
|
::SelectObject(hdcMem, hPenOld);
|
|
::SelectObject(hdcMem, hbmOld);
|
|
::DeleteDC(hdcMem);
|
|
}
|
|
|
|
void SelectionModel::DrawBackgroundPoly(HDC hDCImage, COLORREF crBg)
|
|
{
|
|
ShiftPtStack(TRUE);
|
|
|
|
HGDIOBJ hPenOld = ::SelectObject(hDCImage, ::GetStockObject(NULL_PEN));
|
|
HGDIOBJ hbrOld = ::SelectObject(hDCImage, ::CreateSolidBrush(crBg));
|
|
::Polygon(hDCImage, m_ptStack, m_iPtSP);
|
|
::DeleteObject(::SelectObject(hDCImage, hbrOld));
|
|
::SelectObject(hDCImage, hPenOld);
|
|
|
|
ShiftPtStack(FALSE);
|
|
}
|
|
|
|
void SelectionModel::DrawBackgroundRect(HDC hDCImage, COLORREF crBg)
|
|
{
|
|
Rect(hDCImage, m_rc.left, m_rc.top, m_rc.right, m_rc.bottom, crBg, crBg, 0, 1);
|
|
}
|
|
|
|
void SelectionModel::DrawSelection(HDC hDCImage, LPCRECT prc, COLORREF crBg, BOOL bBgTransparent)
|
|
{
|
|
CRect rc = *prc;
|
|
if (::IsRectEmpty(&rc))
|
|
return;
|
|
|
|
BITMAP bm;
|
|
GetObject(m_hbmColor, sizeof(BITMAP), &bm);
|
|
|
|
COLORREF keyColor = (bBgTransparent ? crBg : CLR_INVALID);
|
|
|
|
HDC hMemDC = CreateCompatibleDC(hDCImage);
|
|
HGDIOBJ hbmOld = SelectObject(hMemDC, m_hbmColor);
|
|
ColorKeyedMaskBlt(hDCImage, rc.left, rc.top, rc.Width(), rc.Height(),
|
|
hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, m_hbmMask, keyColor);
|
|
SelectObject(hMemDC, hbmOld);
|
|
DeleteDC(hMemDC);
|
|
}
|
|
|
|
void SelectionModel::GetSelectionContents(HDC hDCImage)
|
|
{
|
|
ClearColor();
|
|
|
|
HDC hMemDC = ::CreateCompatibleDC(NULL);
|
|
m_hbmColor = CreateColorDIB(m_rc.Width(), m_rc.Height(), RGB(255, 255, 255));
|
|
HGDIOBJ hbmOld = ::SelectObject(hMemDC, m_hbmColor);
|
|
::BitBlt(hMemDC, 0, 0, m_rc.Width(), m_rc.Height(), hDCImage, m_rc.left, m_rc.top, SRCCOPY);
|
|
::SelectObject(hMemDC, hbmOld);
|
|
::DeleteDC(hMemDC);
|
|
}
|
|
|
|
BOOL SelectionModel::TakeOff()
|
|
{
|
|
if (m_hbmColor || ::IsRectEmpty(&m_rc))
|
|
return FALSE;
|
|
|
|
HDC hDCImage = imageModel.GetDC();
|
|
GetSelectionContents(hDCImage);
|
|
|
|
if (toolsModel.GetActiveTool() == TOOL_FREESEL)
|
|
{
|
|
DrawBackgroundPoly(hDCImage, paletteModel.GetBgColor());
|
|
}
|
|
else
|
|
{
|
|
ClearMask();
|
|
DrawBackgroundRect(hDCImage, paletteModel.GetBgColor());
|
|
}
|
|
|
|
imageModel.NotifyImageChanged();
|
|
return TRUE;
|
|
}
|
|
|
|
void SelectionModel::Landing()
|
|
{
|
|
if (!m_hbmColor)
|
|
return;
|
|
|
|
DrawSelection(imageModel.GetDC(), &m_rc, paletteModel.GetBgColor(), toolsModel.IsBackgroundTransparent());
|
|
|
|
::SetRectEmpty(&m_rc);
|
|
ClearMask();
|
|
ClearColor();
|
|
|
|
imageModel.PushImageForUndo();
|
|
}
|
|
|
|
void SelectionModel::InsertFromHBITMAP(HBITMAP hBm, INT x, INT y)
|
|
{
|
|
::DeleteObject(m_hbmColor);
|
|
m_hbmColor = CopyDIBImage(hBm);
|
|
|
|
m_rc.left = x;
|
|
m_rc.top = y;
|
|
m_rc.right = m_rc.left + GetDIBWidth(hBm);
|
|
m_rc.bottom = m_rc.top + GetDIBHeight(hBm);
|
|
|
|
ClearMask();
|
|
}
|
|
|
|
void SelectionModel::FlipHorizontally()
|
|
{
|
|
TakeOff();
|
|
|
|
HDC hdcMem = ::CreateCompatibleDC(NULL);
|
|
if (m_hbmMask)
|
|
{
|
|
::SelectObject(hdcMem, m_hbmMask);
|
|
::StretchBlt(hdcMem, m_rc.Width() - 1, 0, -m_rc.Width(), m_rc.Height(),
|
|
hdcMem, 0, 0, m_rc.Width(), m_rc.Height(), SRCCOPY);
|
|
}
|
|
if (m_hbmColor)
|
|
{
|
|
::SelectObject(hdcMem, m_hbmColor);
|
|
::StretchBlt(hdcMem, m_rc.Width() - 1, 0, -m_rc.Width(), m_rc.Height(),
|
|
hdcMem, 0, 0, m_rc.Width(), m_rc.Height(), SRCCOPY);
|
|
}
|
|
::DeleteDC(hdcMem);
|
|
|
|
imageModel.NotifyImageChanged();
|
|
}
|
|
|
|
void SelectionModel::FlipVertically()
|
|
{
|
|
TakeOff();
|
|
|
|
HDC hdcMem = ::CreateCompatibleDC(NULL);
|
|
if (m_hbmMask)
|
|
{
|
|
::SelectObject(hdcMem, m_hbmMask);
|
|
::StretchBlt(hdcMem, 0, m_rc.Height() - 1, m_rc.Width(), -m_rc.Height(),
|
|
hdcMem, 0, 0, m_rc.Width(), m_rc.Height(), SRCCOPY);
|
|
}
|
|
if (m_hbmColor)
|
|
{
|
|
::SelectObject(hdcMem, m_hbmColor);
|
|
::StretchBlt(hdcMem, 0, m_rc.Height() - 1, m_rc.Width(), -m_rc.Height(),
|
|
hdcMem, 0, 0, m_rc.Width(), m_rc.Height(), SRCCOPY);
|
|
}
|
|
::DeleteDC(hdcMem);
|
|
|
|
imageModel.NotifyImageChanged();
|
|
}
|
|
|
|
void SelectionModel::RotateNTimes90Degrees(int iN)
|
|
{
|
|
HBITMAP hbm;
|
|
HGDIOBJ hbmOld;
|
|
HDC hdcMem = ::CreateCompatibleDC(NULL);
|
|
|
|
switch (iN)
|
|
{
|
|
case 1:
|
|
case 3:
|
|
TakeOff();
|
|
if (m_hbmColor)
|
|
{
|
|
hbmOld = ::SelectObject(hdcMem, m_hbmColor);
|
|
hbm = Rotate90DegreeBlt(hdcMem, m_rc.Width(), m_rc.Height(), iN == 1, FALSE);
|
|
::SelectObject(hdcMem, hbmOld);
|
|
::DeleteObject(m_hbmColor);
|
|
m_hbmColor = hbm;
|
|
}
|
|
if (m_hbmMask)
|
|
{
|
|
hbmOld = ::SelectObject(hdcMem, m_hbmMask);
|
|
hbm = Rotate90DegreeBlt(hdcMem, m_rc.Width(), m_rc.Height(), iN == 1, TRUE);
|
|
::SelectObject(hdcMem, hbmOld);
|
|
::DeleteObject(m_hbmMask);
|
|
m_hbmMask = hbm;
|
|
}
|
|
break;
|
|
|
|
case 2:
|
|
TakeOff();
|
|
if (m_hbmColor)
|
|
{
|
|
hbmOld = ::SelectObject(hdcMem, m_hbmColor);
|
|
::StretchBlt(hdcMem, m_rc.Width() - 1, m_rc.Height() - 1, -m_rc.Width(), -m_rc.Height(),
|
|
hdcMem, 0, 0, m_rc.Width(), m_rc.Height(), SRCCOPY);
|
|
::SelectObject(hdcMem, hbmOld);
|
|
}
|
|
if (m_hbmMask)
|
|
{
|
|
hbmOld = ::SelectObject(hdcMem, m_hbmMask);
|
|
::StretchBlt(hdcMem, m_rc.Width() - 1, m_rc.Height() - 1, -m_rc.Width(), -m_rc.Height(),
|
|
hdcMem, 0, 0, m_rc.Width(), m_rc.Height(), SRCCOPY);
|
|
::SelectObject(hdcMem, hbmOld);
|
|
}
|
|
break;
|
|
}
|
|
|
|
::DeleteDC(hdcMem);
|
|
imageModel.NotifyImageChanged();
|
|
}
|
|
|
|
void SelectionModel::StretchSkew(int nStretchPercentX, int nStretchPercentY, int nSkewDegX, int nSkewDegY)
|
|
{
|
|
if (nStretchPercentX == 100 && nStretchPercentY == 100 && nSkewDegX == 0 && nSkewDegY == 0)
|
|
return;
|
|
|
|
TakeOff();
|
|
|
|
INT oldWidth = m_rc.Width();
|
|
INT oldHeight = m_rc.Height();
|
|
INT newWidth = oldWidth * nStretchPercentX / 100;
|
|
INT newHeight = oldHeight * nStretchPercentY / 100;
|
|
|
|
if (oldWidth != newWidth || oldHeight != newHeight)
|
|
{
|
|
HBITMAP hbm0 = CopyDIBImage(m_hbmColor, newWidth, newHeight);
|
|
InsertFromHBITMAP(hbm0, m_rc.left, m_rc.top);
|
|
::DeleteObject(hbm0);
|
|
}
|
|
|
|
HDC hDC = ::CreateCompatibleDC(NULL);
|
|
|
|
if (nSkewDegX)
|
|
{
|
|
::SelectObject(hDC, m_hbmColor);
|
|
HBITMAP hbm1 = SkewDIB(hDC, m_hbmColor, nSkewDegX, FALSE);
|
|
InsertFromHBITMAP(hbm1, m_rc.left, m_rc.top);
|
|
::DeleteObject(hbm1);
|
|
}
|
|
|
|
if (nSkewDegY)
|
|
{
|
|
::SelectObject(hDC, m_hbmColor);
|
|
HBITMAP hbm2 = SkewDIB(hDC, m_hbmColor, nSkewDegY, TRUE);
|
|
InsertFromHBITMAP(hbm2, m_rc.left, m_rc.top);
|
|
::DeleteObject(hbm2);
|
|
}
|
|
|
|
::DeleteDC(hDC);
|
|
|
|
m_bShow = TRUE;
|
|
imageModel.NotifyImageChanged();
|
|
}
|
|
|
|
HBITMAP SelectionModel::GetBitmap()
|
|
{
|
|
if (m_hbmColor == NULL)
|
|
GetSelectionContents(imageModel.GetDC());
|
|
return m_hbmColor;
|
|
}
|
|
|
|
int SelectionModel::PtStackSize() const
|
|
{
|
|
return m_iPtSP;
|
|
}
|
|
|
|
void SelectionModel::DrawFramePoly(HDC hDCImage)
|
|
{
|
|
/* draw the freehand selection inverted/xored */
|
|
Poly(hDCImage, m_ptStack, m_iPtSP, 0, 0, 2, 0, FALSE, TRUE);
|
|
}
|
|
|
|
void SelectionModel::SetRectFromPoints(const POINT& ptFrom, const POINT& ptTo)
|
|
{
|
|
m_rc.left = min(ptFrom.x, ptTo.x);
|
|
m_rc.top = min(ptFrom.y, ptTo.y);
|
|
m_rc.right = max(ptFrom.x, ptTo.x);
|
|
m_rc.bottom = max(ptFrom.y, ptTo.y);
|
|
}
|
|
|
|
void SelectionModel::Dragging(CANVAS_HITTEST hit, POINT pt)
|
|
{
|
|
switch (hit)
|
|
{
|
|
case HIT_NONE:
|
|
break;
|
|
case HIT_UPPER_LEFT:
|
|
m_rc.left += pt.x - m_ptHit.x;
|
|
m_rc.top += pt.y - m_ptHit.y;
|
|
break;
|
|
case HIT_UPPER_CENTER:
|
|
m_rc.top += pt.y - m_ptHit.y;
|
|
break;
|
|
case HIT_UPPER_RIGHT:
|
|
m_rc.right += pt.x - m_ptHit.x;
|
|
m_rc.top += pt.y - m_ptHit.y;
|
|
break;
|
|
case HIT_MIDDLE_LEFT:
|
|
m_rc.left += pt.x - m_ptHit.x;
|
|
break;
|
|
case HIT_MIDDLE_RIGHT:
|
|
m_rc.right += pt.x - m_ptHit.x;
|
|
break;
|
|
case HIT_LOWER_LEFT:
|
|
m_rc.left += pt.x - m_ptHit.x;
|
|
m_rc.bottom += pt.y - m_ptHit.y;
|
|
break;
|
|
case HIT_LOWER_CENTER:
|
|
m_rc.bottom += pt.y - m_ptHit.y;
|
|
break;
|
|
case HIT_LOWER_RIGHT:
|
|
m_rc.right += pt.x - m_ptHit.x;
|
|
m_rc.bottom += pt.y - m_ptHit.y;
|
|
break;
|
|
case HIT_BORDER:
|
|
case HIT_INNER:
|
|
OffsetRect(&m_rc, pt.x - m_ptHit.x, pt.y - m_ptHit.y);
|
|
break;
|
|
}
|
|
m_ptHit = pt;
|
|
}
|
|
|
|
void SelectionModel::ClearMask()
|
|
{
|
|
if (m_hbmMask)
|
|
{
|
|
::DeleteObject(m_hbmMask);
|
|
m_hbmMask = NULL;
|
|
}
|
|
}
|
|
|
|
void SelectionModel::ClearColor()
|
|
{
|
|
if (m_hbmColor)
|
|
{
|
|
::DeleteObject(m_hbmColor);
|
|
m_hbmColor = NULL;
|
|
}
|
|
}
|
|
|
|
void SelectionModel::CancelSelection()
|
|
{
|
|
if (!m_bShow)
|
|
return;
|
|
|
|
imageModel.PushImageForUndo();
|
|
if (m_bShow)
|
|
imageModel.Undo(TRUE);
|
|
|
|
m_bShow = FALSE;
|
|
imageModel.NotifyImageChanged();
|
|
}
|