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[MSPAINT] Implement canvas rotation (#4360)

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- Add Rotate90DegreeBlt function to dib.cpp.
- Implement ImageModel::RotateNTimes90Degrees and SelectionModel::RotateNTimes90Degrees.
- Improve ToolsModel::SetBackgroundTransparent.
- Extend and improve SelectionModel::InsertFromHBITMAP.
CORE-16634
This commit is contained in:
Katayama Hirofumi MZ 2022-02-14 12:08:34 +09:00 • committed by GitHub
parent 6eccbe27ec
commit 2d90919047
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9 changed files with 86 additions and 7 deletions
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16
base/applications/mspaint/history.cpp
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@ -245,11 +245,25 @@ void ImageModel::FlipVertically()
void ImageModel::RotateNTimes90Degrees(int iN)
{
if (iN == 2)
switch (iN)
{
case 1:
case 3:
DeleteObject(hBms[(currInd + 1) % HISTORYSIZE]);
hBms[(currInd + 1) % HISTORYSIZE] = Rotate90DegreeBlt(hDrawingDC, GetWidth(), GetHeight(), iN == 1);
currInd = (currInd + 1) % HISTORYSIZE;
if (undoSteps < HISTORYSIZE - 1)
undoSteps++;
redoSteps = 0;
SelectObject(hDrawingDC, hBms[currInd]);
imageSaved = FALSE;
NotifyDimensionsChanged();
break;
case 2:
CopyPrevious();
StretchBlt(hDrawingDC, GetWidth() - 1, GetHeight() - 1, -GetWidth(), -GetHeight(), GetDC(),
0, 0, GetWidth(), GetHeight(), SRCCOPY);
break;
}
NotifyImageChanged();
}