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Windows: Refactor WindowsBitmapData to expose updateLayeredWindow

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reuk 2024-08-13 19:18:53 +01:00
parent 328ad60d9e
commit 831c5142a4
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GPG key ID: FCB43929F012EE5C
1 changed files with 43 additions and 35 deletions
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56
modules/juce_gui_basics/native/juce_Windowing_windows.cpp
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@ -1054,38 +1054,40 @@ public:
return newImage.getPixelData();
}
void blitToWindow (HWND hwnd, HDC dc, bool transparent, int x, int y, uint8 layeredWindowAlpha) noexcept
static void updateLayeredWindow (HDC sourceHdc, HWND hwnd, Point<int> pt, float constantAlpha)
{
SetMapMode (dc, MM_TEXT);
const auto windowBounds = getWindowScreenRect (hwnd);
if (transparent)
{
auto windowBounds = getWindowScreenRect (hwnd);
POINT p = { -x, -y };
auto p = D2DUtilities::toPOINT (pt);
POINT pos = { windowBounds.left, windowBounds.top };
SIZE size = { windowBounds.right - windowBounds.left,
windowBounds.bottom - windowBounds.top };
BLENDFUNCTION bf;
bf.AlphaFormat = 1 /*AC_SRC_ALPHA*/;
bf.BlendFlags = 0;
bf.BlendOp = AC_SRC_OVER;
bf.SourceConstantAlpha = layeredWindowAlpha;
BLENDFUNCTION bf { AC_SRC_OVER, 0, (BYTE) (255.0f * constantAlpha), AC_SRC_ALPHA };
[[maybe_unused]] auto ok = UpdateLayeredWindow (hwnd, nullptr, &pos, &size, hdc, &p, 0, &bf, 2 /*ULW_ALPHA*/);
jassert (ok);
UpdateLayeredWindow (hwnd, nullptr, &pos, &size, sourceHdc, &p, 0, &bf, ULW_ALPHA);
}
else
void updateLayeredWindow (HWND hwnd, Point<int> pt, float constantAlpha) const noexcept
{
updateLayeredWindow (hdc, hwnd, pt, constantAlpha);
}
void blitToDC (HDC dc, int x, int y) const noexcept
{
SetMapMode (dc, MM_TEXT);
StretchDIBits (dc,
x, y, width, height,
0, 0, width, height,
bitmapData, (const BITMAPINFO*) &bitmapInfo,
DIB_RGB_COLORS, SRCCOPY);
}
}
HBITMAP getHBITMAP() const { return hBitmap; }
HDC getHDC() const { return hdc; }
private:
HBITMAP hBitmap;
HGDIOBJ previousBitmap;
BITMAPV4HEADER bitmapInfo;
@ -1094,7 +1096,6 @@ public:
int pixelStride, lineStride;
uint8* imageData;
private:
static bool isGraphicsCard32Bit()
{
ScopedDeviceContext deviceContext { nullptr };
@ -1240,7 +1241,7 @@ namespace IconConverters
info.xHotspot = (DWORD) hotspotX;
info.yHotspot = (DWORD) hotspotY;
info.hbmMask = mask;
info.hbmColor = nativeBitmap->hBitmap;
info.hbmColor = nativeBitmap->getHBITMAP();
auto hi = CreateIconIndirect (&info);
DeleteObject (mask);
@ -4784,21 +4785,23 @@ public:
ScopedDeviceContext deviceContext { hwnd };
const auto hdc = nativeBitmap->getHDC();
if (isPerMonitorDPIAwareProcess())
{
auto scale = getScaleFactorForWindow (hwnd);
auto prevStretchMode = SetStretchBltMode (nativeBitmap->hdc, HALFTONE);
SetBrushOrgEx (nativeBitmap->hdc, 0, 0, nullptr);
auto prevStretchMode = SetStretchBltMode (hdc, HALFTONE);
SetBrushOrgEx (hdc, 0, 0, nullptr);
StretchBlt (nativeBitmap->hdc, 0, 0, w, h,
StretchBlt (hdc, 0, 0, w, h,
deviceContext.dc, 0, 0, roundToInt (w * scale), roundToInt (h * scale),
SRCCOPY);
SetStretchBltMode (nativeBitmap->hdc, prevStretchMode);
SetStretchBltMode (hdc, prevStretchMode);
}
else
{
BitBlt (nativeBitmap->hdc, 0, 0, w, h, deviceContext.dc, 0, 0, SRCCOPY);
BitBlt (hdc, 0, 0, w, h, deviceContext.dc, 0, 0, SRCCOPY);
}
return SoftwareImageType().convert (bitmap);
@ -4907,7 +4910,12 @@ private:
peer.handlePaint (*context);
}
static_cast<WindowsBitmapImage*> (offscreenImage.getPixelData())->blitToWindow (peer.getHWND(), dc, transparent, x, y, layeredWindowAlpha);
auto* image = static_cast<WindowsBitmapImage*> (offscreenImage.getPixelData());
if (! peer.getComponent().isOpaque() || peer.getComponent().getAlpha() < 1.0f)
image->updateLayeredWindow (peer.getHWND(), { x, y }, peer.getComponent().getAlpha());
else
image->blitToDC (dc, x, y);
}
if (childClipInfo.savedDC != 0)