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Removed TODOs about device coordinates in the GTK+ backend; that has been resolved.

This commit is contained in:
Pietro Gagliardi 2014-06-03 12:54:13 -04:00
parent ad4ea927b8
commit 9a86659c37
1 changed files with 1 additions and 2 deletions
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3
area_unix.go
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@ -55,7 +55,7 @@ func our_area_draw_callback(widget *C.GtkWidget, cr *C.cairo_t, data C.gpointer)
s := (*sysData)(unsafe.Pointer(data)) s := (*sysData)(unsafe.Pointer(data))
// thanks to desrt in irc.gimp.net/#gtk+ // thanks to desrt in irc.gimp.net/#gtk+
// TODO these are in "user coordinates"; is that what we want? // these are in user coordinates, which match what coordinates we want by default, even out of a draw event handler (thanks johncc3, mclasen, and Company in irc.gimp.net/#gtk+)
C.cairo_clip_extents(cr, &x0, &y0, &x1, &y1) C.cairo_clip_extents(cr, &x0, &y0, &x1, &y1)
// we do not need to clear the cliprect; GtkDrawingArea did it for us beforehand // we do not need to clear the cliprect; GtkDrawingArea did it for us beforehand
cliprect := image.Rect(int(x0), int(y0), int(x1), int(y1)) cliprect := image.Rect(int(x0), int(y0), int(x1), int(y1))
@ -84,7 +84,6 @@ func our_area_draw_callback(widget *C.GtkWidget, cr *C.cairo_t, data C.gpointer)
0, 0) // origin of the surface 0, 0) // origin of the surface
// that just set the brush that cairo uses: we have to actually draw now // that just set the brush that cairo uses: we have to actually draw now
// (via https://developer.gnome.org/gtkmm-tutorial/stable/sec-draw-images.html.en) // (via https://developer.gnome.org/gtkmm-tutorial/stable/sec-draw-images.html.en)
// TODO see above about user coordinates; if we do change to device coordinates the following line will need to change or be added to
C.cairo_rectangle(cr, x0, y0, x1, y1) // breaking the nrom here since we have the coordinates as a C double already C.cairo_rectangle(cr, x0, y0, x1, y1) // breaking the nrom here since we have the coordinates as a C double already
C.cairo_fill(cr) C.cairo_fill(cr)
C.cairo_surface_destroy(surface) // free surface C.cairo_surface_destroy(surface) // free surface