Fix divide by zero in ui::Slider (#19957) #20019
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* Added RenderTexture::saveToFileAsNonPMA() to save images without PMA. Set the PMA parameter to true when calling initWithRawData() inside RenderTexture::newImage(), since textures are PMA. Renamed Image::premultipliedAlpha() to Image::premultiplyAlpha() to better reflect it's action, and made it public. Added Image::reversePremultipliedAlpha() to allow the reversing of the PMA. Updated CCImage-ios.mm to set the correct bitmapInfo for PMA and non-PMA images before saving a file. Updated RenderTextureTest::RenderTextureSave() to cater for non-PMA file saving. * [CCImage-ios.mm] Fixed indentation. * [UISlider.cpp] Divide by 0 error if _maxPercent is equal to 0, which is an allowed value.
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Added RenderTexture::saveToFileAsNonPMA() to save images without PMA.
Set the PMA parameter to true when calling initWithRawData() inside RenderTexture::newImage(), since textures are PMA.
Renamed Image::premultipliedAlpha() to Image::premultiplyAlpha() to better reflect it's action, and made it public.
Added Image::reversePremultipliedAlpha() to allow the reversing of the PMA.
Updated CCImage-ios.mm to set the correct bitmapInfo for PMA and non-PMA images before saving a file.
Updated RenderTextureTest::RenderTextureSave() to cater for non-PMA file saving.
[CCImage-ios.mm] Fixed indentation.
[UISlider.cpp] Divide by 0 error if _maxPercent is equal to 0, which is an allowed value.