Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Alain Ekambi]

The fileupload widget can control what kind of files can be uploaded.
There you can restrict the files only to images.

On 25 January 2016 at 18:16, Julio Heitor Nobrega 
wrote:

> Is there a way to see what format the file has? If it isn't an image i'll
> have to warn the user.
>
> 2016-01-25 14:58 GMT-02:00 Julio Heitor Nobrega :
>
>> Hi Alain,
>>
>> nice code! I am going to do this but in a java version code. I just
>> didn't know i could get the image path from a 'value' of the
>>
>> document.getElementById("fileUpload")
>>
>> I could even show a image preview to the user before send it to the
>> server!
>>
>> Or maybe convert the base64 String to byte array, scale it and then send
>> to the server :)
>>
>> Thanks!
>>
>> 2016-01-25 14:22 GMT-02:00 Alain Ekambi :
>>
>>> I think what you should to is get the base64  representation of the
>>> image from the canvas. Something like
>>>
>>> var p;var canvas = document.createElement("canvas");
>>> var img1=document.createElement("img");
>>> function getBase64Image(){
>>> p=document.getElementById("fileUpload").value;
>>> img1.setAttribute('src', p);
>>> canvas.width = img1.width;
>>> canvas.height = img1.height;
>>> var ctx = canvas.getContext("2d");
>>> ctx.drawImage(img1, 0, 0);
>>> var dataURL = canvas.toDataURL("image/png");alert("from getbase64 
>>> function"+dataURL );
>>> return dataURL;}
>>>
>>> Then send the base64 to the server and corvert it to byterarry or
>>> whatever format you need there to save it to disc,
>>>
>>>
>>>
>>> On 25 January 2016 at 17:11, Julio Heitor Nobrega <
>>> juliohnobr...@gmail.com> wrote:
>>>
 Hi Alain,

 i am doing exactly that. I am sending the byte array to the server,
 saving it as a file in a directory and storing the path in a DB column.

 My problem is to get the byte array from the file (is it possible to
 get the byte array using FileUpoad?) and work on it before send to the
 server.

 2016-01-25 13:39 GMT-02:00 Alain Ekambi :

> Would it be a better designer to save the image on disc and just save
> the link to the image to the DB ?
>
> On 25 January 2016 at 15:59, Julio Heitor Nobrega <
> juliohnobr...@gmail.com> wrote:
>
>> As a matter of fact, i am beginning to think that its more wise to
>> send the whole image to the server, scale it using Scalr and store it 
>> into
>> the DB.
>>
>> I want to have the control of the image size, test levels of quality.
>> The Scalr has a mode called 'Automatic' that fits your image to the
>> dimensions you pass to it.
>>
>> None of it i will have with GWT Canvas.
>>
>> The only drawback i would get using Scalr is that i will consume more
>> bandwidth DigitalOcean  gives me monthly because i will have to send the
>> whole image to the server.
>>
>> 2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega <
>> juliohnobr...@gmail.com>:
>>
>>> Thanks for your answer Greg!
>>>
>>> Actually, i really need a byte array because i will store it in a
>>> BLOB database column.
>>>
>>> Regards!
>>>
>>> 2016-01-25 12:43 GMT-02:00 Greg :
>>>
 Just use context.getCanvas().toDataUrl(); which will return data
 uri with the contents of the canvas. You can use it directly in >>> src=""> element or send it to server.

 On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor
 Nobrega wrote:
>
> I have just found an example (
> http://c.gwt-examples.com/home/ui/canvas).
>
> The only problem is to convert ImageData to an byte array :)
>
> Regards!
>
>
>
> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega <
> julioh...@gmail.com>:
>
>> Does anyone have some examples regarding the Canvas class?
>>
>> I've seen the java doc API but the only methods i think that
>> could be useful was:
>>
>> Context2d
>> 
>>  *getContext2d
>> *
>> ()
>>   Returns a 2D rendering context.
>>  void *setCoordinateSpaceHeight
>> *
>> (int height)
>>   Sets the height of the internal canvas coordinate
>> space.
>> void *setCoordinateSpaceWidth
>> *
>> (int width)
>>   Sets the width of the internal canvas coordinate space.
>>
>> 2016-01-14 16:36 GMT-02:00 Kirill Praz

Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Hi Claudio,

thank you for your post. You method could only be used if implemented on
the server side.

GWT does not support the awt API.

Regards!

2016-01-27 8:01 GMT-02:00 Kirill Prazdnikov :

> How do you use AWT code in client GWT code ?
>
>
> On Wednesday, January 27, 2016 at 12:19:15 PM UTC+3, claudio sergio
> Goncalves wrote:
>>
>> Hi julio
>>
>> i use this routine to redimensione my images
>>
>> public static BufferedImage redimensionarImagem(BufferedImage img, int
>> maltura, int mlargura) throws Exception {
>>
>> java.awt.Image imagem = (java.awt.Image) img;
>> java.awt.Image thumbs = ((java.awt.Image) imagem)
>> .getScaledInstance(mlargura, maltura, BufferedImage.SCALE_SMOOTH);
>> BufferedImage buffer = new BufferedImage(mlargura, maltura,
>> BufferedImage.TYPE_INT_RGB);
>> buffer.createGraphics().drawImage(thumbs, 0, 0, null);
>> return buffer;
>> }
>> pass the width and height in pixels (maltura e mlargura)
>> After thar you can upload the image.
>>
>> cheers
>>
>> Claudio
>>
>>
>> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
>> Nobrega escreveu:
>>>
>>> Hi guys,
>>>
>>> i am trying to upload images with 2mb size but i don't want to send the
>>> whole original image to the server.
>>>
>>> What i would like to do is reduce the image dimensions from, for
>>> example, *1000x1000* to *50x50* and reduce the file size
>>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to
>>> the server.
>>>
>>> I know there is the Scalr framework that does that in java, but its no
>>> compatible with GWT clients.
>>>
>>> Is there any client side GWT library that does the same thing as Scalr?
>>>
>>> Best Regards!
>>>
>>>
>>> --
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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Kirill Prazdnikov]

How do you use AWT code in client GWT code ?

On Wednesday, January 27, 2016 at 12:19:15 PM UTC+3, claudio sergio 
Goncalves wrote:
>
> Hi julio
>
> i use this routine to redimensione my images
>
> public static BufferedImage redimensionarImagem(BufferedImage img, int 
> maltura, int mlargura) throws Exception {
>
> java.awt.Image imagem = (java.awt.Image) img;
> java.awt.Image thumbs = ((java.awt.Image) imagem)
> .getScaledInstance(mlargura, maltura, BufferedImage.SCALE_SMOOTH);
> BufferedImage buffer = new BufferedImage(mlargura, maltura, 
> BufferedImage.TYPE_INT_RGB);
> buffer.createGraphics().drawImage(thumbs, 0, 0, null);
> return buffer;
> }
> pass the width and height in pixels (maltura e mlargura)
> After thar you can upload the image.
>
> cheers
>
> Claudio
>
>
> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor 
> Nobrega escreveu:
>>
>> Hi guys,
>>
>> i am trying to upload images with 2mb size but i don't want to send the 
>> whole original image to the server. 
>>
>> What i would like to do is reduce the image dimensions from, for example, 
>> *1000x1000* to *50x50* and reduce the file size
>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to 
>> the server.
>>
>> I know there is the Scalr framework that does that in java, but its no 
>> compatible with GWT clients.
>>
>> Is there any client side GWT library that does the same thing as Scalr?
>>
>> Best Regards!
>>
>>
>>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[claudio sergio Goncalves]

Hi julio

i use this routine to redimensione my images

public static BufferedImage redimensionarImagem(BufferedImage img, int 
maltura, int mlargura) throws Exception {

java.awt.Image imagem = (java.awt.Image) img;
java.awt.Image thumbs = ((java.awt.Image) imagem)
.getScaledInstance(mlargura, maltura, BufferedImage.SCALE_SMOOTH);
BufferedImage buffer = new BufferedImage(mlargura, maltura, 
BufferedImage.TYPE_INT_RGB);
buffer.createGraphics().drawImage(thumbs, 0, 0, null);
return buffer;
}
pass the width and height in pixels (maltura e mlargura)
After thar you can upload the image.

cheers

Claudio


Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor Nobrega 
escreveu:
>
> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to send the 
> whole original image to the server. 
>
> What i would like to do is reduce the image dimensions from, for example, 
> *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to 
> the server.
>
> I know there is the Scalr framework that does that in java, but its no 
> compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as Scalr?
>
> Best Regards!
>
>
>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[thiago]

Crux framework has an utility class that already implement this. You can 
check the class here: 
https://github.com/CruxFramework/crux/blob/master/crux-dev/src/main/java/org/cruxframework/crux/core/client/image/ImageProcessor.java
 


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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Is there a way to see what format the file has? If it isn't an image i'll
have to warn the user.

2016-01-25 14:58 GMT-02:00 Julio Heitor Nobrega :

> Hi Alain,
>
> nice code! I am going to do this but in a java version code. I just didn't
> know i could get the image path from a 'value' of the
>
> document.getElementById("fileUpload")
>
> I could even show a image preview to the user before send it to the server!
>
> Or maybe convert the base64 String to byte array, scale it and then send
> to the server :)
>
> Thanks!
>
> 2016-01-25 14:22 GMT-02:00 Alain Ekambi :
>
>> I think what you should to is get the base64  representation of the image
>> from the canvas. Something like
>>
>> var p;var canvas = document.createElement("canvas");
>> var img1=document.createElement("img");
>> function getBase64Image(){
>> p=document.getElementById("fileUpload").value;
>> img1.setAttribute('src', p);
>> canvas.width = img1.width;
>> canvas.height = img1.height;
>> var ctx = canvas.getContext("2d");
>> ctx.drawImage(img1, 0, 0);
>> var dataURL = canvas.toDataURL("image/png");alert("from getbase64 
>> function"+dataURL );
>> return dataURL;}
>>
>> Then send the base64 to the server and corvert it to byterarry or
>> whatever format you need there to save it to disc,
>>
>>
>>
>> On 25 January 2016 at 17:11, Julio Heitor Nobrega <
>> juliohnobr...@gmail.com> wrote:
>>
>>> Hi Alain,
>>>
>>> i am doing exactly that. I am sending the byte array to the server,
>>> saving it as a file in a directory and storing the path in a DB column.
>>>
>>> My problem is to get the byte array from the file (is it possible to get
>>> the byte array using FileUpoad?) and work on it before send to the server.
>>>
>>> 2016-01-25 13:39 GMT-02:00 Alain Ekambi :
>>>
 Would it be a better designer to save the image on disc and just save
 the link to the image to the DB ?

 On 25 January 2016 at 15:59, Julio Heitor Nobrega <
 juliohnobr...@gmail.com> wrote:

> As a matter of fact, i am beginning to think that its more wise to
> send the whole image to the server, scale it using Scalr and store it into
> the DB.
>
> I want to have the control of the image size, test levels of quality.
> The Scalr has a mode called 'Automatic' that fits your image to the
> dimensions you pass to it.
>
> None of it i will have with GWT Canvas.
>
> The only drawback i would get using Scalr is that i will consume more
> bandwidth DigitalOcean  gives me monthly because i will have to send the
> whole image to the server.
>
> 2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega <
> juliohnobr...@gmail.com>:
>
>> Thanks for your answer Greg!
>>
>> Actually, i really need a byte array because i will store it in a
>> BLOB database column.
>>
>> Regards!
>>
>> 2016-01-25 12:43 GMT-02:00 Greg :
>>
>>> Just use context.getCanvas().toDataUrl(); which will return data uri
>>> with the contents of the canvas. You can use it directly in 
>>> element or send it to server.
>>>
>>> On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor
>>> Nobrega wrote:

 I have just found an example (
 http://c.gwt-examples.com/home/ui/canvas).

 The only problem is to convert ImageData to an byte array :)

 Regards!



 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega <
 julioh...@gmail.com>:

> Does anyone have some examples regarding the Canvas class?
>
> I've seen the java doc API but the only methods i think that could
> be useful was:
>
> Context2d
> 
>  *getContext2d
> *
> ()
>   Returns a 2D rendering context.
>  void *setCoordinateSpaceHeight
> *
> (int height)
>   Sets the height of the internal canvas coordinate
> space.
> void *setCoordinateSpaceWidth
> *
> (int width)
>   Sets the width of the internal canvas coordinate space.
>
> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :
>
>> Canvas is an DOM Element.
>> It can render Image Elements to itself in any resolution.
>> However it may produce not nice results.
>>
>> It depends on what you need.
>>
>> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor
>> Nobrega

Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Hi Alain,

nice code! I am going to do this but in a java version code. I just didn't
know i could get the image path from a 'value' of the

document.getElementById("fileUpload")

I could even show a image preview to the user before send it to the server!

Or maybe convert the base64 String to byte array, scale it and then send to
the server :)

Thanks!

2016-01-25 14:22 GMT-02:00 Alain Ekambi :

> I think what you should to is get the base64  representation of the image
> from the canvas. Something like
>
> var p;var canvas = document.createElement("canvas");
> var img1=document.createElement("img");
> function getBase64Image(){
> p=document.getElementById("fileUpload").value;
> img1.setAttribute('src', p);
> canvas.width = img1.width;
> canvas.height = img1.height;
> var ctx = canvas.getContext("2d");
> ctx.drawImage(img1, 0, 0);
> var dataURL = canvas.toDataURL("image/png");alert("from getbase64 
> function"+dataURL );
> return dataURL;}
>
> Then send the base64 to the server and corvert it to byterarry or whatever
> format you need there to save it to disc,
>
>
>
> On 25 January 2016 at 17:11, Julio Heitor Nobrega  > wrote:
>
>> Hi Alain,
>>
>> i am doing exactly that. I am sending the byte array to the server,
>> saving it as a file in a directory and storing the path in a DB column.
>>
>> My problem is to get the byte array from the file (is it possible to get
>> the byte array using FileUpoad?) and work on it before send to the server.
>>
>> 2016-01-25 13:39 GMT-02:00 Alain Ekambi :
>>
>>> Would it be a better designer to save the image on disc and just save
>>> the link to the image to the DB ?
>>>
>>> On 25 January 2016 at 15:59, Julio Heitor Nobrega <
>>> juliohnobr...@gmail.com> wrote:
>>>
 As a matter of fact, i am beginning to think that its more wise to send
 the whole image to the server, scale it using Scalr and store it into the
 DB.

 I want to have the control of the image size, test levels of quality.
 The Scalr has a mode called 'Automatic' that fits your image to the
 dimensions you pass to it.

 None of it i will have with GWT Canvas.

 The only drawback i would get using Scalr is that i will consume more
 bandwidth DigitalOcean  gives me monthly because i will have to send the
 whole image to the server.

 2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega <
 juliohnobr...@gmail.com>:

> Thanks for your answer Greg!
>
> Actually, i really need a byte array because i will store it in a BLOB
> database column.
>
> Regards!
>
> 2016-01-25 12:43 GMT-02:00 Greg :
>
>> Just use context.getCanvas().toDataUrl(); which will return data uri
>> with the contents of the canvas. You can use it directly in 
>> element or send it to server.
>>
>> On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega
>> wrote:
>>>
>>> I have just found an example (
>>> http://c.gwt-examples.com/home/ui/canvas).
>>>
>>> The only problem is to convert ImageData to an byte array :)
>>>
>>> Regards!
>>>
>>>
>>>
>>> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega >> >:
>>>
 Does anyone have some examples regarding the Canvas class?

 I've seen the java doc API but the only methods i think that could
 be useful was:

 Context2d
 
  *getContext2d
 *
 ()
   Returns a 2D rendering context.
  void *setCoordinateSpaceHeight
 *
 (int height)
   Sets the height of the internal canvas coordinate space.
 void *setCoordinateSpaceWidth
 *
 (int width)
   Sets the width of the internal canvas coordinate space.

 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :

> Canvas is an DOM Element.
> It can render Image Elements to itself in any resolution.
> However it may produce not nice results.
>
> It depends on what you need.
>
> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor
> Nobrega wrote:
>>
>> Hi guys,
>>
>> thanks everyone for the answers!
>>
>> Greg,  is Canvas a GWT framework or its a class that belong to
>> GWT itself?
>>
>> Do you have any example of use?
>>
>> Regards
>>
>>
>>
>> Em quinta-feira, 

Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Alain Ekambi]

I think what you should to is get the base64  representation of the image
from the canvas. Something like

var p;var canvas = document.createElement("canvas");
var img1=document.createElement("img");
function getBase64Image(){
p=document.getElementById("fileUpload").value;
img1.setAttribute('src', p);
canvas.width = img1.width;
canvas.height = img1.height;
var ctx = canvas.getContext("2d");
ctx.drawImage(img1, 0, 0);
var dataURL = canvas.toDataURL("image/png");alert("from getbase64
function"+dataURL );
return dataURL;}

Then send the base64 to the server and corvert it to byterarry or whatever
format you need there to save it to disc,



On 25 January 2016 at 17:11, Julio Heitor Nobrega 
wrote:

> Hi Alain,
>
> i am doing exactly that. I am sending the byte array to the server, saving
> it as a file in a directory and storing the path in a DB column.
>
> My problem is to get the byte array from the file (is it possible to get
> the byte array using FileUpoad?) and work on it before send to the server.
>
> 2016-01-25 13:39 GMT-02:00 Alain Ekambi :
>
>> Would it be a better designer to save the image on disc and just save the
>> link to the image to the DB ?
>>
>> On 25 January 2016 at 15:59, Julio Heitor Nobrega <
>> juliohnobr...@gmail.com> wrote:
>>
>>> As a matter of fact, i am beginning to think that its more wise to send
>>> the whole image to the server, scale it using Scalr and store it into the
>>> DB.
>>>
>>> I want to have the control of the image size, test levels of quality.
>>> The Scalr has a mode called 'Automatic' that fits your image to the
>>> dimensions you pass to it.
>>>
>>> None of it i will have with GWT Canvas.
>>>
>>> The only drawback i would get using Scalr is that i will consume more
>>> bandwidth DigitalOcean  gives me monthly because i will have to send the
>>> whole image to the server.
>>>
>>> 2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega >> >:
>>>
 Thanks for your answer Greg!

 Actually, i really need a byte array because i will store it in a BLOB
 database column.

 Regards!

 2016-01-25 12:43 GMT-02:00 Greg :

> Just use context.getCanvas().toDataUrl(); which will return data uri
> with the contents of the canvas. You can use it directly in 
> element or send it to server.
>
> On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega
> wrote:
>>
>> I have just found an example (
>> http://c.gwt-examples.com/home/ui/canvas).
>>
>> The only problem is to convert ImageData to an byte array :)
>>
>> Regards!
>>
>>
>>
>> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega 
>> :
>>
>>> Does anyone have some examples regarding the Canvas class?
>>>
>>> I've seen the java doc API but the only methods i think that could
>>> be useful was:
>>>
>>> Context2d
>>> 
>>>  *getContext2d
>>> *
>>> ()
>>>   Returns a 2D rendering context.
>>>  void *setCoordinateSpaceHeight
>>> *
>>> (int height)
>>>   Sets the height of the internal canvas coordinate space.
>>> void *setCoordinateSpaceWidth
>>> *
>>> (int width)
>>>   Sets the width of the internal canvas coordinate space.
>>>
>>> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :
>>>
 Canvas is an DOM Element.
 It can render Image Elements to itself in any resolution.
 However it may produce not nice results.

 It depends on what you need.

 On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor
 Nobrega wrote:
>
> Hi guys,
>
> thanks everyone for the answers!
>
> Greg,  is Canvas a GWT framework or its a class that belong to GWT
> itself?
>
> Do you have any example of use?
>
> Regards
>
>
>
> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio
> Heitor Nobrega escreveu:
>>
>> Hi guys,
>>
>> i am trying to upload images with 2mb size but i don't want to
>> send the whole original image to the server.
>>
>> What i would like to do is reduce the image dimensions from, for
>> example, *1000x1000* to *50x50* and reduce the file size
>> from *2mb* to *~25kb* as well and at the end send the *~25kb*
>> image to the server.
>>
>> I know there is the Scalr framework that 

Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Hi Alain,

i am doing exactly that. I am sending the byte array to the server, saving
it as a file in a directory and storing the path in a DB column.

My problem is to get the byte array from the file (is it possible to get
the byte array using FileUpoad?) and work on it before send to the server.

2016-01-25 13:39 GMT-02:00 Alain Ekambi :

> Would it be a better designer to save the image on disc and just save the
> link to the image to the DB ?
>
> On 25 January 2016 at 15:59, Julio Heitor Nobrega  > wrote:
>
>> As a matter of fact, i am beginning to think that its more wise to send
>> the whole image to the server, scale it using Scalr and store it into the
>> DB.
>>
>> I want to have the control of the image size, test levels of quality. The
>> Scalr has a mode called 'Automatic' that fits your image to the dimensions
>> you pass to it.
>>
>> None of it i will have with GWT Canvas.
>>
>> The only drawback i would get using Scalr is that i will consume more
>> bandwidth DigitalOcean  gives me monthly because i will have to send the
>> whole image to the server.
>>
>> 2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega 
>> :
>>
>>> Thanks for your answer Greg!
>>>
>>> Actually, i really need a byte array because i will store it in a BLOB
>>> database column.
>>>
>>> Regards!
>>>
>>> 2016-01-25 12:43 GMT-02:00 Greg :
>>>
 Just use context.getCanvas().toDataUrl(); which will return data uri
 with the contents of the canvas. You can use it directly in 
 element or send it to server.

 On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega
 wrote:
>
> I have just found an example (http://c.gwt-examples.com/home/ui/canvas
> ).
>
> The only problem is to convert ImageData to an byte array :)
>
> Regards!
>
>
>
> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega :
>
>> Does anyone have some examples regarding the Canvas class?
>>
>> I've seen the java doc API but the only methods i think that could be
>> useful was:
>>
>> Context2d
>> 
>>  *getContext2d
>> *
>> ()
>>   Returns a 2D rendering context.
>>  void *setCoordinateSpaceHeight
>> *
>> (int height)
>>   Sets the height of the internal canvas coordinate space.
>> void *setCoordinateSpaceWidth
>> *
>> (int width)
>>   Sets the width of the internal canvas coordinate space.
>>
>> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :
>>
>>> Canvas is an DOM Element.
>>> It can render Image Elements to itself in any resolution.
>>> However it may produce not nice results.
>>>
>>> It depends on what you need.
>>>
>>> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor
>>> Nobrega wrote:

 Hi guys,

 thanks everyone for the answers!

 Greg,  is Canvas a GWT framework or its a class that belong to GWT
 itself?

 Do you have any example of use?

 Regards



 Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
 Nobrega escreveu:
>
> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to
> send the whole original image to the server.
>
> What i would like to do is reduce the image dimensions from, for
> example, *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb*
> image to the server.
>
> I know there is the Scalr framework that does that in java, but
> its no compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as
> Scalr?
>
> Best Regards!
>
>
> --
>>> You received this message because you are subscribed to a topic in
>>> the Google Groups "GWT Users" group.
>>> To unsubscribe from this topic, visit
>>> https://groups.google.com/d/topic/google-web-toolkit/8OfazCLtcLA/unsubscribe
>>> .
>>> To unsubscribe from this group and all its topics, send an email to
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>>> Visit this group at
>>> https://groups.google.com/group/google-web-toolkit.
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>>
> --

Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Alain Ekambi]

Would it be a better designer to save the image on disc and just save the
link to the image to the DB ?

On 25 January 2016 at 15:59, Julio Heitor Nobrega 
wrote:

> As a matter of fact, i am beginning to think that its more wise to send
> the whole image to the server, scale it using Scalr and store it into the
> DB.
>
> I want to have the control of the image size, test levels of quality. The
> Scalr has a mode called 'Automatic' that fits your image to the dimensions
> you pass to it.
>
> None of it i will have with GWT Canvas.
>
> The only drawback i would get using Scalr is that i will consume more
> bandwidth DigitalOcean  gives me monthly because i will have to send the
> whole image to the server.
>
> 2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega :
>
>> Thanks for your answer Greg!
>>
>> Actually, i really need a byte array because i will store it in a BLOB
>> database column.
>>
>> Regards!
>>
>> 2016-01-25 12:43 GMT-02:00 Greg :
>>
>>> Just use context.getCanvas().toDataUrl(); which will return data uri
>>> with the contents of the canvas. You can use it directly in 
>>> element or send it to server.
>>>
>>> On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega
>>> wrote:

 I have just found an example (http://c.gwt-examples.com/home/ui/canvas
 ).

 The only problem is to convert ImageData to an byte array :)

 Regards!



 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega :

> Does anyone have some examples regarding the Canvas class?
>
> I've seen the java doc API but the only methods i think that could be
> useful was:
>
> Context2d
> 
>  *getContext2d
> *
> ()
>   Returns a 2D rendering context.
>  void *setCoordinateSpaceHeight
> *
> (int height)
>   Sets the height of the internal canvas coordinate space.
> void *setCoordinateSpaceWidth
> *
> (int width)
>   Sets the width of the internal canvas coordinate space.
>
> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :
>
>> Canvas is an DOM Element.
>> It can render Image Elements to itself in any resolution.
>> However it may produce not nice results.
>>
>> It depends on what you need.
>>
>> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor
>> Nobrega wrote:
>>>
>>> Hi guys,
>>>
>>> thanks everyone for the answers!
>>>
>>> Greg,  is Canvas a GWT framework or its a class that belong to GWT
>>> itself?
>>>
>>> Do you have any example of use?
>>>
>>> Regards
>>>
>>>
>>>
>>> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
>>> Nobrega escreveu:

 Hi guys,

 i am trying to upload images with 2mb size but i don't want to send
 the whole original image to the server.

 What i would like to do is reduce the image dimensions from, for
 example, *1000x1000* to *50x50* and reduce the file size
 from *2mb* to *~25kb* as well and at the end send the *~25kb*
 image to the server.

 I know there is the Scalr framework that does that in java, but its
 no compatible with GWT clients.

 Is there any client side GWT library that does the same thing as
 Scalr?

 Best Regards!


 --
>> You received this message because you are subscribed to a topic in
>> the Google Groups "GWT Users" group.
>> To unsubscribe from this topic, visit
>> https://groups.google.com/d/topic/google-web-toolkit/8OfazCLtcLA/unsubscribe
>> .
>> To unsubscribe from this group and all its topics, send an email to
>> google-web-toolkit+unsubscr...@googlegroups.com.
>> To post to this group, send email to google-we...@googlegroups.com.
>> Visit this group at
>> https://groups.google.com/group/google-web-toolkit.
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
 --
>>> You received this message because you are subscribed to a topic in the
>>> Google Groups "GWT Users" group.
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>>> .
>>> Visit this group at https://g

Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

As a matter of fact, i am beginning to think that its more wise to send the
whole image to the server, scale it using Scalr and store it into the DB.

I want to have the control of the image size, test levels of quality. The
Scalr has a mode called 'Automatic' that fits your image to the dimensions
you pass to it.

None of it i will have with GWT Canvas.

The only drawback i would get using Scalr is that i will consume more
bandwidth DigitalOcean  gives me monthly because i will have to send the
whole image to the server.

2016-01-25 12:52 GMT-02:00 Julio Heitor Nobrega :

> Thanks for your answer Greg!
>
> Actually, i really need a byte array because i will store it in a BLOB
> database column.
>
> Regards!
>
> 2016-01-25 12:43 GMT-02:00 Greg :
>
>> Just use context.getCanvas().toDataUrl(); which will return data uri with
>> the contents of the canvas. You can use it directly in  element
>> or send it to server.
>>
>> On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega
>> wrote:
>>>
>>> I have just found an example (http://c.gwt-examples.com/home/ui/canvas).
>>>
>>> The only problem is to convert ImageData to an byte array :)
>>>
>>> Regards!
>>>
>>>
>>>
>>> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega :
>>>
 Does anyone have some examples regarding the Canvas class?

 I've seen the java doc API but the only methods i think that could be
 useful was:

 Context2d
 
  *getContext2d
 *
 ()
   Returns a 2D rendering context.
  void *setCoordinateSpaceHeight
 *
 (int height)
   Sets the height of the internal canvas coordinate space.
 void *setCoordinateSpaceWidth
 *
 (int width)
   Sets the width of the internal canvas coordinate space.

 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :

> Canvas is an DOM Element.
> It can render Image Elements to itself in any resolution.
> However it may produce not nice results.
>
> It depends on what you need.
>
> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor
> Nobrega wrote:
>>
>> Hi guys,
>>
>> thanks everyone for the answers!
>>
>> Greg,  is Canvas a GWT framework or its a class that belong to GWT
>> itself?
>>
>> Do you have any example of use?
>>
>> Regards
>>
>>
>>
>> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
>> Nobrega escreveu:
>>>
>>> Hi guys,
>>>
>>> i am trying to upload images with 2mb size but i don't want to send
>>> the whole original image to the server.
>>>
>>> What i would like to do is reduce the image dimensions from, for
>>> example, *1000x1000* to *50x50* and reduce the file size
>>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image
>>> to the server.
>>>
>>> I know there is the Scalr framework that does that in java, but its
>>> no compatible with GWT clients.
>>>
>>> Is there any client side GWT library that does the same thing as
>>> Scalr?
>>>
>>> Best Regards!
>>>
>>>
>>> --
> You received this message because you are subscribed to a topic in the
> Google Groups "GWT Users" group.
> To unsubscribe from this topic, visit
> https://groups.google.com/d/topic/google-web-toolkit/8OfazCLtcLA/unsubscribe
> .
> To unsubscribe from this group and all its topics, send an email to
> google-web-toolkit+unsubscr...@googlegroups.com.
> To post to this group, send email to google-we...@googlegroups.com.
> Visit this group at https://groups.google.com/group/google-web-toolkit
> .
> For more options, visit https://groups.google.com/d/optout.
>


>>> --
>> You received this message because you are subscribed to a topic in the
>> Google Groups "GWT Users" group.
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>>
>
>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Thanks for your answer Greg!

Actually, i really need a byte array because i will store it in a BLOB
database column.

Regards!

2016-01-25 12:43 GMT-02:00 Greg :

> Just use context.getCanvas().toDataUrl(); which will return data uri with
> the contents of the canvas. You can use it directly in  element
> or send it to server.
>
> On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega
> wrote:
>>
>> I have just found an example (http://c.gwt-examples.com/home/ui/canvas).
>>
>> The only problem is to convert ImageData to an byte array :)
>>
>> Regards!
>>
>>
>>
>> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega :
>>
>>> Does anyone have some examples regarding the Canvas class?
>>>
>>> I've seen the java doc API but the only methods i think that could be
>>> useful was:
>>>
>>> Context2d
>>> 
>>>  *getContext2d
>>> *
>>> ()
>>>   Returns a 2D rendering context.
>>>  void *setCoordinateSpaceHeight
>>> *
>>> (int height)
>>>   Sets the height of the internal canvas coordinate space.
>>> void *setCoordinateSpaceWidth
>>> *
>>> (int width)
>>>   Sets the width of the internal canvas coordinate space.
>>>
>>> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :
>>>
 Canvas is an DOM Element.
 It can render Image Elements to itself in any resolution.
 However it may produce not nice results.

 It depends on what you need.

 On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor Nobrega
 wrote:
>
> Hi guys,
>
> thanks everyone for the answers!
>
> Greg,  is Canvas a GWT framework or its a class that belong to GWT
> itself?
>
> Do you have any example of use?
>
> Regards
>
>
>
> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
> Nobrega escreveu:
>>
>> Hi guys,
>>
>> i am trying to upload images with 2mb size but i don't want to send
>> the whole original image to the server.
>>
>> What i would like to do is reduce the image dimensions from, for
>> example, *1000x1000* to *50x50* and reduce the file size
>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image
>> to the server.
>>
>> I know there is the Scalr framework that does that in java, but its
>> no compatible with GWT clients.
>>
>> Is there any client side GWT library that does the same thing as
>> Scalr?
>>
>> Best Regards!
>>
>>
>> --
 You received this message because you are subscribed to a topic in the
 Google Groups "GWT Users" group.
 To unsubscribe from this topic, visit
 https://groups.google.com/d/topic/google-web-toolkit/8OfazCLtcLA/unsubscribe
 .
 To unsubscribe from this group and all its topics, send an email to
 google-web-toolkit+unsubscr...@googlegroups.com.
 To post to this group, send email to google-we...@googlegroups.com.
 Visit this group at https://groups.google.com/group/google-web-toolkit.
 For more options, visit https://groups.google.com/d/optout.

>>>
>>>
>> --
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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Greg]

Just use context.getCanvas().toDataUrl(); which will return data uri with 
the contents of the canvas. You can use it directly in  element 
or send it to server.

On Monday, January 25, 2016 at 3:19:03 PM UTC+1, Julio Heitor Nobrega wrote:
>
> I have just found an example (http://c.gwt-examples.com/home/ui/canvas).
>
> The only problem is to convert ImageData to an byte array :)
>
> Regards!
>
>
>
> 2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega  >:
>
>> Does anyone have some examples regarding the Canvas class?
>>
>> I've seen the java doc API but the only methods i think that could be 
>> useful was:
>>
>> Context2d 
>> 
>>  *getContext2d 
>> *
>> () 
>>   Returns a 2D rendering context. 
>>  void *setCoordinateSpaceHeight 
>> *
>> (int height) 
>>   Sets the height of the internal canvas coordinate space.  
>> void *setCoordinateSpaceWidth 
>> *
>> (int width) 
>>   Sets the width of the internal canvas coordinate space. 
>>
>> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov > >:
>>
>>> Canvas is an DOM Element.
>>> It can render Image Elements to itself in any resolution.
>>> However it may produce not nice results.
>>>
>>> It depends on what you need.
>>>
>>> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor Nobrega 
>>> wrote:

 Hi guys,

 thanks everyone for the answers!

 Greg,  is Canvas a GWT framework or its a class that belong to GWT 
 itself?

 Do you have any example of use?

 Regards



 Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor 
 Nobrega escreveu:
>
> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to send 
> the whole original image to the server. 
>
> What i would like to do is reduce the image dimensions from, for 
> example, *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb* image 
> to the server.
>
> I know there is the Scalr framework that does that in java, but its no 
> compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as Scalr?
>
> Best Regards!
>
>
> -- 
>>> You received this message because you are subscribed to a topic in the 
>>> Google Groups "GWT Users" group.
>>> To unsubscribe from this topic, visit 
>>> https://groups.google.com/d/topic/google-web-toolkit/8OfazCLtcLA/unsubscribe
>>> .
>>> To unsubscribe from this group and all its topics, send an email to 
>>> google-web-toolkit+unsubscr...@googlegroups.com .
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>>> .
>>> Visit this group at https://groups.google.com/group/google-web-toolkit.
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>>
>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

I have just found an example (http://c.gwt-examples.com/home/ui/canvas).

The only problem is to convert ImageData to an byte array :)

Regards!



2016-01-25 12:08 GMT-02:00 Julio Heitor Nobrega :

> Does anyone have some examples regarding the Canvas class?
>
> I've seen the java doc API but the only methods i think that could be
> useful was:
>
> Context2d
> 
>  *getContext2d
> *
> ()
>   Returns a 2D rendering context.
>  void *setCoordinateSpaceHeight
> *
> (int height)
>   Sets the height of the internal canvas coordinate space.
> void *setCoordinateSpaceWidth
> *
> (int width)
>   Sets the width of the internal canvas coordinate space.
>
> 2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :
>
>> Canvas is an DOM Element.
>> It can render Image Elements to itself in any resolution.
>> However it may produce not nice results.
>>
>> It depends on what you need.
>>
>> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor Nobrega
>> wrote:
>>>
>>> Hi guys,
>>>
>>> thanks everyone for the answers!
>>>
>>> Greg,  is Canvas a GWT framework or its a class that belong to GWT
>>> itself?
>>>
>>> Do you have any example of use?
>>>
>>> Regards
>>>
>>>
>>>
>>> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
>>> Nobrega escreveu:

 Hi guys,

 i am trying to upload images with 2mb size but i don't want to send the
 whole original image to the server.

 What i would like to do is reduce the image dimensions from, for
 example, *1000x1000* to *50x50* and reduce the file size
 from *2mb* to *~25kb* as well and at the end send the *~25kb* image to
 the server.

 I know there is the Scalr framework that does that in java, but its no
 compatible with GWT clients.

 Is there any client side GWT library that does the same thing as Scalr?

 Best Regards!


 --
>> You received this message because you are subscribed to a topic in the
>> Google Groups "GWT Users" group.
>> To unsubscribe from this topic, visit
>> https://groups.google.com/d/topic/google-web-toolkit/8OfazCLtcLA/unsubscribe
>> .
>> To unsubscribe from this group and all its topics, send an email to
>> google-web-toolkit+unsubscr...@googlegroups.com.
>> To post to this group, send email to google-web-toolkit@googlegroups.com.
>> Visit this group at https://groups.google.com/group/google-web-toolkit.
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Does anyone have some examples regarding the Canvas class?

I've seen the java doc API but the only methods i think that could be
useful was:

Context2d

*getContext2d
*
()
  Returns a 2D rendering context.
 void *setCoordinateSpaceHeight
*
(int height)
  Sets the height of the internal canvas coordinate space.
void *setCoordinateSpaceWidth
*
(int width)
  Sets the width of the internal canvas coordinate space.

2016-01-14 16:36 GMT-02:00 Kirill Prazdnikov :

> Canvas is an DOM Element.
> It can render Image Elements to itself in any resolution.
> However it may produce not nice results.
>
> It depends on what you need.
>
> On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor Nobrega
> wrote:
>>
>> Hi guys,
>>
>> thanks everyone for the answers!
>>
>> Greg,  is Canvas a GWT framework or its a class that belong to GWT itself?
>>
>> Do you have any example of use?
>>
>> Regards
>>
>>
>>
>> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor
>> Nobrega escreveu:
>>>
>>> Hi guys,
>>>
>>> i am trying to upload images with 2mb size but i don't want to send the
>>> whole original image to the server.
>>>
>>> What i would like to do is reduce the image dimensions from, for
>>> example, *1000x1000* to *50x50* and reduce the file size
>>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to
>>> the server.
>>>
>>> I know there is the Scalr framework that does that in java, but its no
>>> compatible with GWT clients.
>>>
>>> Is there any client side GWT library that does the same thing as Scalr?
>>>
>>> Best Regards!
>>>
>>>
>>> --
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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Kirill Prazdnikov]

Canvas is an DOM Element.
It can render Image Elements to itself in any resolution.
However it may produce not nice results.

It depends on what you need.

On Thursday, January 14, 2016 at 9:17:36 PM UTC+3, Julio Heitor Nobrega 
wrote:
>
> Hi guys,
>
> thanks everyone for the answers!
>
> Greg,  is Canvas a GWT framework or its a class that belong to GWT itself?
>
> Do you have any example of use?
>
> Regards
>
>
>
> Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor 
> Nobrega escreveu:
>>
>> Hi guys,
>>
>> i am trying to upload images with 2mb size but i don't want to send the 
>> whole original image to the server. 
>>
>> What i would like to do is reduce the image dimensions from, for example, 
>> *1000x1000* to *50x50* and reduce the file size
>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to 
>> the server.
>>
>> I know there is the Scalr framework that does that in java, but its no 
>> compatible with GWT clients.
>>
>> Is there any client side GWT library that does the same thing as Scalr?
>>
>> Best Regards!
>>
>>
>>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Julio Heitor Nobrega]

Hi guys,

thanks everyone for the answers!

Greg,  is Canvas a GWT framework or its a class that belong to GWT itself?

Do you have any example of use?

Regards



Em quinta-feira, 14 de janeiro de 2016 11:25:29 UTC-2, Julio Heitor Nobrega 
escreveu:
>
> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to send the 
> whole original image to the server. 
>
> What i would like to do is reduce the image dimensions from, for example, 
> *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to 
> the server.
>
> I know there is the Scalr framework that does that in java, but its no 
> compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as Scalr?
>
> Best Regards!
>
>
>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Greg]

Hi

Yes, it's possible. You have to read the contents of selected file first 
and then use Canvas to resize it (link 

).

On Thursday, January 14, 2016 at 2:25:29 PM UTC+1, Julio Heitor Nobrega 
wrote:
>
> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to send the 
> whole original image to the server. 
>
> What i would like to do is reduce the image dimensions from, for example, 
> *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to 
> the server.
>
> I know there is the Scalr framework that does that in java, but its no 
> compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as Scalr?
>
> Best Regards!
>
>
>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Alberto Mancini]

Hello,
maybe i misunderstand but  i think that an option may be
drawing the image scaled in a canvas and then using getDataUrl() to get
back data to upload.

Cheers,
   A.


On Thu, Jan 14, 2016 at 2:25 PM Julio Heitor Nobrega <
juliohnobr...@gmail.com> wrote:

> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to send the
> whole original image to the server.
>
> What i would like to do is reduce the image dimensions from, for example,
> *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to
> the server.
>
> I know there is the Scalr framework that does that in java, but its no
> compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as Scalr?
>
> Best Regards!
>
>
> --
> You received this message because you are subscribed to the Google Groups
> "GWT Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to google-web-toolkit+unsubscr...@googlegroups.com.
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>

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Alain Ekambi]

We were doing stuff like that using Flash and our GWT API for Flash.

On 14 January 2016 at 15:27, Frank  wrote:

> I would be very surprised if this is possible at all.
> I don't think this is possible in javascript.
>
> Op donderdag 14 januari 2016 14:25:29 UTC+1 schreef Julio Heitor Nobrega:
>
>> Hi guys,
>>
>> i am trying to upload images with 2mb size but i don't want to send the
>> whole original image to the server.
>>
>> What i would like to do is reduce the image dimensions from, for example,
>> *1000x1000* to *50x50* and reduce the file size
>> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to
>> the server.
>>
>> I know there is the Scalr framework that does that in java, but its no
>> compatible with GWT clients.
>>
>> Is there any client side GWT library that does the same thing as Scalr?
>>
>> Best Regards!
>>
>>
>> --
> You received this message because you are subscribed to the Google Groups
> "GWT Users" group.
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>



-- 

Alain Ekambi

Co-Founder

Ahomé Innovation Technologies

http://www.ahome-it.com/ 

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Re: Is there any GWT library to be used in client side that does the same thing as Scalr (scale and reduze image file sizes)?

[Frank]

I would be very surprised if this is possible at all.
I don't think this is possible in javascript.

Op donderdag 14 januari 2016 14:25:29 UTC+1 schreef Julio Heitor Nobrega:
>
> Hi guys,
>
> i am trying to upload images with 2mb size but i don't want to send the 
> whole original image to the server. 
>
> What i would like to do is reduce the image dimensions from, for example, 
> *1000x1000* to *50x50* and reduce the file size
> from *2mb* to *~25kb* as well and at the end send the *~25kb* image to 
> the server.
>
> I know there is the Scalr framework that does that in java, but its no 
> compatible with GWT clients.
>
> Is there any client side GWT library that does the same thing as Scalr?
>
> Best Regards!
>
>
>

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