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alpha masking for buttons. original attribution @dottools

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This commit is contained in:
Azaezel 2016-03-09 20:02:39 -06:00
parent 61bae52c89
commit 76228f2d0c
2 changed files with 45 additions and 0 deletions
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41
Engine/source/gui/buttons/guiBitmapButtonCtrl.cpp
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@ -124,6 +124,7 @@ GuiBitmapButtonCtrl::GuiBitmapButtonCtrl()
mUseModifiers = false;
mUseStates = true;
setExtent( 140, 30 );
mMasked = false;
}
//-----------------------------------------------------------------------------
@ -157,6 +158,7 @@ void GuiBitmapButtonCtrl::initPersistFields()
"Defaults to true.\n\n"
"If you do not use per-state images on this button set this to false to speed up the loading process "
"by inhibiting searches for the individual images." );
addField("masked", TypeBool, Offset(mMasked, GuiBitmapButtonCtrl),"Use alpha masking for interaction.");
endGroup( "Bitmap" );
@ -551,3 +553,42 @@ void GuiBitmapButtonTextCtrl::renderButton( GFXTexHandle &texture, const Point2I
GFX->getDrawUtil()->setBitmapModulation( mProfile->mFontColor );
renderJustifiedText(textPos, getExtent(), mButtonText);
}
bool GuiBitmapButtonCtrl::pointInControl(const Point2I& parentCoordPoint)
{
if (mMasked && getTextureForCurrentState())
{
ColorI rColor(0, 0, 0, 0);
GBitmap* bmp;
const RectI &bounds = getBounds();
S32 xt = parentCoordPoint.x - bounds.point.x;
S32 yt = parentCoordPoint.y - bounds.point.y;
bmp = getTextureForCurrentState().getBitmap();
if (!bmp)
{
setBitmap(mBitmapName);
bmp = getTextureForCurrentState().getBitmap();
}
S32 relativeXRange = this->getExtent().x;
S32 relativeYRange = this->getExtent().y;
S32 fileXRange = bmp->getHeight(0);
S32 fileYRange = bmp->getWidth(0);
//Con::errorf("xRange:[%i -- %i], Range:[%i -- %i] pos:(%i,%i)",relativeXRange,fileXRange,relativeYRange,fileYRange,xt,yt);
S32 fileX = (xt*fileXRange) / relativeXRange;
S32 fileY = (yt*fileYRange) / relativeYRange;
//Con::errorf("Checking %s @ (%i,%i)",this->getName(),fileX,fileY);
bmp->getColor(fileX, fileY, rColor);
if (rColor.alpha)
return true;
else
return false;
}
else
return Parent::pointInControl(parentCoordPoint);
}