change drawtext size in GeUserArea [SOLVED]
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On 04/05/2015 at 10:00, xxxxxxxx wrote:
I think I forgot to search, found some examples here on the forums, I guess there won't be a problem now, will ask again here if there is any problem.
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On 04/05/2015 at 10:09, xxxxxxxx wrote:
Would be nice if you linked the examples here for the others
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On 04/05/2015 at 16:35, xxxxxxxx wrote:
right
https://developers.maxon.net/forum/topic/7451/9272_geclipmap-in-userarea&KW=geclipmap
https://developers.maxon.net/forum/topic/7190/8229_bitmap-to-geclipmap&KW=geclipmap -
On 04/05/2015 at 17:15, xxxxxxxx wrote:
DrawSetPen(Vector(0.8, 0.2, 0.2)); //AutoAlloc<BaseBitmap> bm; AutoFree<MultipassBitmap> bm = MultipassBitmap::Alloc(128, 128, COLORMODE_ARGB); if(!bm) return; bm->AddChannel(TRUE,TRUE); //bm->Init(128, 128, 32); //bm->Clear(0,0,0); BaseBitmap *mAlpha = bm->GetInternalChannel(); if(!mAlpha) return; for(Int32 i = 0; i < 128; ++i) for(Int32 j = 0; j < 128; ++j) bm->SetAlphaPixel(mAlpha, i, j, 0); AutoAlloc<GeClipMap> cm; if(!cm) return; cm->Init(bm, mAlpha); BaseContainer mFont; //cm->Init(128, 128, 32); Float mFontSize = cm->GetFont(&mFont); BaseBitmap *mBitmap = cm->GetBitmap(); cm->BeginDraw(); //cm->SetColor(0, 0, 0, 0); //cm->FillRect(0, 0, 127, 127); cm->SetColor(150, 160, 170, 255); cm->TextAt(4, 4, "Hello World1"); cm->EndDraw(); Int32 mw = cm->GetBw(); Int32 mh = cm->GetBh(); DrawBitmap(mBitmap,0,0,mw,mh,0,0,mw,mh,BMP_ALLOWALPHA);it draws the text with red background, I want the background to be transparent, what should I do?
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On 05/05/2015 at 19:09, xxxxxxxx wrote:
no one knows if this is a bug or not? the Bitmap should be empty, but for unknown reason it fills the Bitmap with the last pen color, any idea how to solve this?
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On 05/05/2015 at 22:20, xxxxxxxx wrote:
Hi Mohamed,
I'm currently at FMX. I'll be looking into this after my return next Monday.
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On 05/05/2015 at 23:49, xxxxxxxx wrote:
I've also experienced this. DrawBitmap() seems to use the last pen
color instead of mixing alpha pixels with the pixels that are already on
the GeUserArea. -
On 06/05/2015 at 06:48, xxxxxxxx wrote:
No need for the explicit additional bitmap and alpha channel allocation.
You can set the transparency value with SetColor(r,g,b,a).i.e. cm->SetColor(r,g,b,128) will give a half transparent output.
hth
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On 06/05/2015 at 13:46, xxxxxxxx wrote:
yea Samir, but it remains with an unavoidable bug!! , background is not transparent.
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On 07/05/2015 at 03:34, xxxxxxxx wrote:
I can't confirm. It works. Here is the code:OffScreenOn(); Int32 w = 100; Int32 h = 100; AutoAlloc<GeClipMap> bmp; bmp->Init(w,h,32); bmp->BeginDraw(); bmp->SetDrawMode(GE_CM_DRAWMODE_COPY,255); bmp->SetColor(255,255,255,0); //Fully transparent bmp->FillRect(0,0,w,h); //Set the whole bitmap transparent bmp->SetDrawMode(GE_CM_DRAWMODE_COPY,255); bmp->SetColor(255,255,255,128); //50% transparent bmp->TextAt(10,10,"Katachi rocks.. :-D"); //Draw text bmp->EndDraw(); DrawBitmap(bmp->GetBitmap(),0,0,w,h,0,0,w,h,BMP_ALLOWALPHA); -
On 07/05/2015 at 06:43, xxxxxxxx wrote:
Hi Samir,
try to add DrawSetPen(Vector(0.8, 0.2, 0.2)); "or any other color" after OffScreenOn(); and you will find the bug, I tested your code and the same problem appears.
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On 07/05/2015 at 10:23, xxxxxxxx wrote:
Then don't. Why are you using DrawSetPen?
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On 07/05/2015 at 14:23, xxxxxxxx wrote:
drawing other stuff prior to texts, should I draw everything in one clipmap? not sure about performance, I will test, it may worth a shot!!
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On 08/05/2015 at 01:19, xxxxxxxx wrote:
yes, if you don't have a good reason, you should stay with the clip map drawing functions.
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On 16/05/2015 at 21:26, xxxxxxxx wrote:
after using GeClipMap in all drawings it worked perfectly
, thanks all for the help, you can mark this as solved