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Slightly simpler implementation of Fl_Cocoa_Gl_Window_Driver::alpha_mask_for_string() - continued.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@13032 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy
2018-08-28 12:33:27 +00:00
parent 9289a63af2
commit d0739e8712
1 changed files with 3 additions and 3 deletions
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src/gl_draw.cxx
+3 -3
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@@ -760,11 +760,11 @@ char *Fl_Cocoa_Gl_Window_Driver::alpha_mask_for_string(const char *str, int n, i
{
// write str to a bitmap just big enough
Fl_Image_Surface *surf = new Fl_Image_Surface(w, h);
Fl_Font f=fl_font(); Fl_Fontsize s=fl_size();
Fl_Surface_Device::push_current(surf);
fl_color(FL_WHITE);
CGContextScaleCTM(surf->offscreen(), gl_scale, gl_scale);
CGContextTranslateCTM(surf->offscreen(), 0, fl_height() - fl_descent());
fl_draw(str, n, 0, 0);
fl_font(f, s * gl_scale);
fl_draw(str, n, 0, fl_height() - fl_descent());
// get the alpha channel only of the bitmap
char *txt_buf = new char[w*h], *r = txt_buf, *q;
q = (char*)CGBitmapContextGetData(surf->offscreen());