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[MSPAINT] drawing.cpp: Refactor Erase, Replace and Airbrush 2

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CORE-18867
This commit is contained in:
Katayama Hirofumi MZ 2023-06-14 17:03:22 +09:00
parent 78c8df8393
commit 0334498068
1 changed files with 26 additions and 10 deletions
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36
base/applications/mspaint/drawing.cpp
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@ -116,26 +116,42 @@ Fill(HDC hdc, LONG x, LONG y, COLORREF color)
void
Erase(HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF color, LONG radius)
{
LONG cx = (x1 + x2) / 2, cy = (y1 + y2) / 2;
RECT rc = { cx - radius, cy - radius, cx + radius, cy + radius };
LONG b = max(1, max(abs(x2 - x1), abs(y2 - y1)));
RECT rc;
HBRUSH hbr = ::CreateSolidBrush(color);
::FillRect(hdc, &rc, hbr);
for (LONG a = 0; a <= b; a++)
{
::SetRect(&rc, (x1 * (b - a) + x2 * a) / b - radius,
(y1 * (b - a) + y2 * a) / b - radius,
(x1 * (b - a) + x2 * a) / b + radius,
(y1 * (b - a) + y2 * a) / b + radius);
::FillRect(hdc, &rc, hbr);
}
::DeleteObject(hbr);
}
void
Replace(HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF fg, COLORREF bg, LONG radius)
{
LONG cx = (x1 + x2) / 2, cy = (y1 + y2) / 2;
RECT rc = { cx - radius, cy - radius, cx + radius, cy + radius };
LONG b = max(1, max(abs(x2 - x1), abs(y2 - y1)));
RECT rc;
for (LONG y = rc.top; y < rc.bottom; ++y)
for (LONG a = 0; a <= b; a++)
{
for (LONG x = rc.left; x < rc.right; ++x)
::SetRect(&rc, (x1 * (b - a) + x2 * a) / b - radius,
(y1 * (b - a) + y2 * a) / b - radius,
(x1 * (b - a) + x2 * a) / b + radius,
(y1 * (b - a) + y2 * a) / b + radius);
for (LONG y = rc.top; y < rc.bottom; ++y)
{
if (::GetPixel(hdc, x, y) == fg)
::SetPixelV(hdc, x, y, bg);
for (LONG x = rc.left; x < rc.right; ++x)
{
if (::GetPixel(hdc, x, y) == fg)
::SetPixelV(hdc, x, y, bg);
}
}
}
}