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Fix for issue #155 - continued

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This fix takes care of the Windows platform.
This commit is contained in:
ManoloFLTK
2020-11-13 10:02:33 +01:00
parent a4bacf83c4
commit c227edef39
1 changed files with 8 additions and 4 deletions
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src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
+8 -4
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@@ -535,18 +535,22 @@ void Fl_GDI_Graphics_Driver::draw_rgb(Fl_RGB_Image *rgb, int XP, int YP, int WP,
if (!*Fl_Graphics_Driver::id(rgb)) {
cache(rgb);
}
float scaleW = float(rgb->data_w())/rgb->w();
float scaleH = float(rgb->data_h())/rgb->h();
int W = WP, H = HP;
cache_size(rgb, W, H);
int Wfull = rgb->w(), Hfull = rgb->h();
cache_size(rgb, Wfull, Hfull);
HDC new_gc = CreateCompatibleDC(gc_);
int save = SaveDC(new_gc);
SelectObject(new_gc, (HBITMAP)*Fl_Graphics_Driver::id(rgb));
Wfull = W*(rgb->data_w()/float(Wfull)); Hfull = H*(rgb->data_h()/float(Hfull));
cx *= scale(); cy *= scale();
if (cx+Wfull > rgb->data_w()) Wfull = rgb->data_w()-cx;
if (cy+Hfull > rgb->data_h()) Hfull = rgb->data_h()-cy;
if ( (rgb->d() % 2) == 0 ) {
alpha_blend_(XP*scale(), YP*scale(), W, H, new_gc, cx*scaleW, cy*scaleH, WP*scaleW, HP*scaleH);
alpha_blend_(XP*scale(), YP*scale(), W, H, new_gc, cx, cy, Wfull, Hfull);
} else {
SetStretchBltMode(gc_, HALFTONE);
StretchBlt(gc_, XP*scale(), YP*scale(), W, H, new_gc, cx*scaleW, cy*scaleH, WP*scaleW, HP*scaleH, SRCCOPY);
StretchBlt(gc_, XP*scale(), YP*scale(), W, H, new_gc, cx, cy, Wfull, Hfull, SRCCOPY);
}
RestoreDC(new_gc, save);
DeleteDC(new_gc);