# Cairo translate with mouse dragging **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [April 28, 2008, 8:28pm UTC](https://www.ruby-forum.com/t/cairo-translate-with-mouse-dragging/136086 "2008-04-28T20:28:56Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![KONTRAS\_Gergely](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/9e8a1a/32.png) [@KONTRAS\_Gergely](https://www.ruby-forum.com/u/KONTRAS_Gergely)\ **Post date:** [April 28, 2008, 8:28pm UTC](https://www.ruby-forum.com/t/cairo-translate-with-mouse-dragging/136086/1 "2008-04-28T20:28:56Z")
[http://pastebin.com/d1a425431](http://pastebin.com/d1a425431) Hi all! I would like to have a DrawingArea + Cairo, which is zoomable and pannable. The Zoomable aspect is done by me, but I do not know how to implement the pannable. Which Gdk::Event should I enable to handle panning with left or middle button drag? Which signal to connect to? thanks Gergo – ±[Gergely K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ]------------------+ | | | Mobile:(+36 20)356 9656 | | | ± “Olyan lángész vagyok, hogy poroltóval kellene járnom!” -+ ---
**Author:** ![KONTRAS\_Gergely](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/9e8a1a/32.png) [@KONTRAS\_Gergely](https://www.ruby-forum.com/u/KONTRAS_Gergely)\ **Post date:** [April 28, 2008, 10:43pm UTC](https://www.ruby-forum.com/t/cairo-translate-with-mouse-dragging/136086/2 "2008-04-28T22:43:46Z")
Am Montag, den 28.04.2008, 18:32 +0200 schrieb KONTRA, Gergely: > button drag? > Which signal to connect to? Hi, check for Gdk::Event::BUTTON\_PRESS for start of dragging, observe the dragging with Gdk::Event::MOTION\_NOTIFY and end it with Gdk::Event::BUTTON\_RELEASE . To get the information, wich button is pressed use event.button from the signal handler. Cheers, detlef ---
**Author:** ![KONTRAS\_Gergely](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/9e8a1a/32.png) [@KONTRAS\_Gergely](https://www.ruby-forum.com/u/KONTRAS_Gergely)\ **Post date:** [April 29, 2008, 10:19am UTC](https://www.ruby-forum.com/t/cairo-translate-with-mouse-dragging/136086/3 "2008-04-29T10:19:11Z")
I thought BUTTON1\_MOTION\_MASK has to do something with dragging with button1, but maybe I was wrong… On Mon, Apr 28, 2008 at 9:34 PM, Detlef R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > the pannable. > > Gdk::Event::BUTTON\_RELEASE . To get the information, wich button is > > This [SF.net](http://SF.net) email is sponsored by the 2008 JavaOne(SM) Conference > > Don’t miss this year’s exciting event. There’s still time to save $100. > > Use priority code J8TL2D2. > > [http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone](http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone) > > * * * > > ruby-gnome2-devel-en mailing list > removed\_email\_address@domain.invalid > [ruby-gnome2-devel-en List Signup and Options](https://lists.sourceforge.net/lists/listinfo/ruby-gnome2-devel-en) – ±[Gergely K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ]------------------+ | | | Mobile:(+36 20)356 9656 | | | ± “Olyan lángész vagyok, hogy poroltóval kellene járnom!” -+ ---
**Author:** ![KONTRAS\_Gergely](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/9e8a1a/32.png) [@KONTRAS\_Gergely](https://www.ruby-forum.com/u/KONTRAS_Gergely)\ **Post date:** [April 29, 2008, 10:23am UTC](https://www.ruby-forum.com/t/cairo-translate-with-mouse-dragging/136086/4 "2008-04-29T10:23:19Z")
And what about the drag-motion signal? What should I type to add\_events to be able to catch that? Or is that for something else? On Tue, Apr 29, 2008 at 10:18 AM, KONTRA, Gergely [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > thanks > > > ruby-gnome2-devel-en mailing list > > > | | > > > | Mobile:(+36 20)356 9656 | > > > | | > > > ± “Olyan lángész vagyok, hogy poroltóval kellene járnom!” -+ – ±[Gergely K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ]------------------+ | | | Mobile:(+36 20)356 9656 | | | ± “Olyan lángész vagyok, hogy poroltóval kellene járnom!” -+ ---
**Author:** ![KONTRAS\_Gergely](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/9e8a1a/32.png) [@KONTRAS\_Gergely](https://www.ruby-forum.com/u/KONTRAS_Gergely)\ **Post date:** [April 29, 2008, 4:27pm UTC](https://www.ruby-forum.com/t/cairo-translate-with-mouse-dragging/136086/5 "2008-04-29T16:27:18Z")
Hi! Thanks for the reply, I have completed the example, and refactored the reusable parts. (DragZoomDrawingArea should be reusable class) Here is it: > **[Gergely Kontra - Pastebin.com](https://pastebin.com/f63c6aaa9)** > > Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time. Zooming respect current mouse position On Mon, Apr 28, 2008 at 9:34 PM, Detlef R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > the pannable. > > Gdk::Event::BUTTON\_RELEASE . To get the information, wich button is > > This [SF.net](http://SF.net) email is sponsored by the 2008 JavaOne(SM) Conference > > Don’t miss this year’s exciting event. There’s still time to save $100. > > Use priority code J8TL2D2. > > [http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone](http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone) > > * * * > > ruby-gnome2-devel-en mailing list > removed\_email\_address@domain.invalid > [ruby-gnome2-devel-en List Signup and Options](https://lists.sourceforge.net/lists/listinfo/ruby-gnome2-devel-en) – ±[Gergely K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ]------------------+ | | | Mobile:(+36 20)356 9656 | | | ± “Olyan lángész vagyok, hogy poroltóval kellene járnom!” -+