[Gambas-user] Image smoothing

[juan duque]

Thanks for the reply.

Have you tested with the attachment? The Paint.Antialias = False has
no effect, at least on my system: the obtained image remains
smoothened.

Public Sub Button2_Click()

  Dim hPic As Picture

  hPic = New Picture(256, 256)
  If (RadioButton1.Value) Then
    Paint.Begin(hPic)
      Paint.AntiAlias = False
      Paint.DrawPicture(PictureBox3.Picture, 0, 0, 256, 256)
      Paint.Stroke
    Paint.End()
  Else
    Draw.Begin(hPic)
      ' Draw.Antialias = False ==> unknow symbol Antialias in clas Draw
      Draw.Picture(PictureBox3.Picture, 0, 0, 256, 256)
    Draw.End()
  End If
  PictureBox2.Picture = hPic

End

Can you confirm that you see correctly?

Regards


2016-07-12 14:43 GMT+01:00, Fabien Bodard <gambas.fr at ...626...>:
> Yes Paint.Antialias = False
>
> or Draw.Antialias = False
>
> http://gambaswiki.org/wiki/comp/gb.qt4/paint/antialias
>
> 2016-07-09 10:41 GMT+02:00 juan duque <ilustrisimo.sr.duque at ...626...>:
>> Obviously my English is somewhat lacking. Apologies.
>>
>> I think this is not a bug but rather a design with some shortcomings.
>>
>> Smoothing (or interpolation) of an image is often convenient but not
>> desirable in all cases.
>> Attached a sample program (this would be a magnifying glass).
>>
>> Is there any way of disable smoothing in the image/paint/draw component?
>>
>> Regards
>>
>> [Component]
>> gb.gui
>>
>> [System]
>> Gambas=3.8.4
>> OperatingSystem=Linux
>> Kernel=4.6.0-1-amd64
>> Architecture=x86_64
>> Distribution=debian stretch/sid
>> Desktop=KDE5
>> Theme=Breeze
>> Language=es_ES.UTF-8
>> Memory=2003M
>>
>> [Libraries]
>> Cairo=libcairo.so.2.11400.6
>> DBus=libdbus-1.so.3.14.6
>> GStreamer=libgstreamer-1.0.so.0.802.0
>> GTK+2=libgtk-x11-2.0.so.0.2400.30
>> GTK+3=libgtk-3.so.0.2000.6
>> OpenGL=libGL.so.1.2.0
>> Poppler=libpoppler.so.61.0.0
>> QT4=libQtCore.so.4.8.7
>> QT5=libQt5Core.so.5.6.1
>> SDL=libSDL-1.2.so.0.11.4
>>
>> [Environment]
>> DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-FCrJu0dWI4,guid=17adfd9a793c7c66824227df5780a4fe
>> DESKTOP_SESSION=/usr/share/xsessions/plasma
>> DISPLAY=:0
>> GB_GUI=gb.qt5
>> GS_LIB=<home>/.fonts
>> GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:<home>/.gtkrc-2.0:<home>/.config/gtkrc-2.0
>> GTK_RC_FILES=/etc/gtk/gtkrc:<home>/.gtkrc:<home>/.config/gtkrc
>> HOME=<home>
>> KDE_FULL_SESSION=true
>> KDE_MULTIHEAD=false
>> KDE_SESSION_UID=1000
>> KDE_SESSION_VERSION=5
>> LANG=es_ES.UTF-8
>> LANGUAGE=es
>> LOGNAME=<user>
>> MATHEMATICA_HOME=/media/rescue/local/Wolfram/Mathematica/9.0
>> PAM_KWALLET5_LOGIN=/tmp/kwallet5_<user>.socket
>> PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
>> PWD=<home>
>> QT_ACCESSIBILITY=1
>> QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1
>> QT_NO_GLIB=1
>> SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/2966,unix/<hostname>:/tmp/.ICE-unix/2966
>> SHELL=/bin/bash
>> SHLVL=0
>> SSH_AGENT_PID=2905
>> SSH_AUTH_SOCK=/tmp/ssh-h8t4f8SuNyh2/agent.2851
>> TZ=:/etc/localtime
>> USER=<user>
>> XAUTHORITY=/tmp/xauth-1000-_0
>> XCURSOR_SIZE=0
>> XCURSOR_THEME=breeze_cursors
>> XDG_CURRENT_DESKTOP=KDE
>> XDG_DATA_DIRS=/usr/share:/usr/share:/usr/local/share
>> XDG_RUNTIME_DIR=/run/user/1000
>> XDG_SEAT=seat0
>> XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
>> XDG_SESSION_CLASS=user
>> XDG_SESSION_DESKTOP=KDE
>> XDG_SESSION_ID=4
>> XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session1
>> XDG_SESSION_TYPE=x11
>> XDG_VTNR=7
>>
>> ------------------------------------------------------------------------------
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>
>
>
> --
> Fabien Bodard
>
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