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Cairo graphics driver: Improve drawing of Fl_Pixmap and Fl_Bitmap

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This commit is contained in:
ManoloFLTK 2023-11-27 12:15:21 +01:00
parent f6d2ba651b
commit 6ea31316fb
1 changed files with 3 additions and 2 deletions
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5
src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
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@ -805,8 +805,9 @@ void Fl_Cairo_Graphics_Driver::draw_cached_pattern_(Fl_Image *img, cairo_pattern
cairo_set_matrix(cairo_, &matrix);
if (img->d() >= 1) cairo_set_source(cairo_, pat);
if (need_extend) {
cairo_pattern_set_filter(pat, Fl_RGB_Image::scaling_algorithm() == FL_RGB_SCALING_BILINEAR ?
CAIRO_FILTER_GOOD : CAIRO_FILTER_FAST);
bool condition = Fl_RGB_Image::scaling_algorithm() == FL_RGB_SCALING_BILINEAR &&
(fabs(Ws/float(cache_w) - 1) > 0.02 || fabs(Hs/float(cache_h) - 1) > 0.02);
cairo_pattern_set_filter(pat, condition ? CAIRO_FILTER_GOOD : CAIRO_FILTER_FAST);
cairo_pattern_set_extend(pat, CAIRO_EXTEND_PAD);
}
cairo_matrix_init_scale(&matrix, double(cache_w)/Ws, double(cache_h)/Hs);