Re: gtkD load images
On 05-08-17 22:59, ag0aep6g wrote: On 08/05/2017 10:30 PM, Mike Wey wrote: On 05-08-17 15:23, Johnson Jones wrote: On Saturday, 5 August 2017 at 12:51:13 UTC, Mike Wey wrote: [...] There are two issues here, you need to properly escape the slash: "C:a.jpg". [...] ``` Pixbuf p = new Pixbuf(r"C:\\a.jpg"); ``` Thanks. Why do I need 4 slashes? Is that standard with gtk because strings are interpreted twice or something? Seemed to work though. Nothing specific to GTK but in D and other programing languages the \ is used as an escape character, so you can use special characters in your sting like `\n` for a newline. But this means you will need to use \\ to get an literal back slash. I think you missed the point of the question. In the end, the path should contain only one backslash. But with `"C:a.jpg"` and `r"C:\\a.jpg"` you get two. Why do you need two? Does the library do another round of escape sequence handling? That's me not being a Windows user shining trough, i somehow got it in my head that you needed two backslashes after the C:. But indeed just "C:\\a.jpg" or r"C:\a.jpg" will work as expected. -- Mike Wey
Re: gtkD load images
On 08/05/2017 10:30 PM, Mike Wey wrote: On 05-08-17 15:23, Johnson Jones wrote: On Saturday, 5 August 2017 at 12:51:13 UTC, Mike Wey wrote: [...] There are two issues here, you need to properly escape the slash: "C:a.jpg". [...] ``` Pixbuf p = new Pixbuf(r"C:\\a.jpg"); ``` Thanks. Why do I need 4 slashes? Is that standard with gtk because strings are interpreted twice or something? Seemed to work though. Nothing specific to GTK but in D and other programing languages the \ is used as an escape character, so you can use special characters in your sting like `\n` for a newline. But this means you will need to use \\ to get an literal back slash. I think you missed the point of the question. In the end, the path should contain only one backslash. But with `"C:a.jpg"` and `r"C:\\a.jpg"` you get two. Why do you need two? Does the library do another round of escape sequence handling?
Re: gtkD load images
On 05-08-17 15:23, Johnson Jones wrote:
On Saturday, 5 August 2017 at 12:51:13 UTC, Mike Wey wrote:
On 03-08-17 21:56, Johnson Jones wrote:
If I do something like
import gdkpixbuf.Pixbuf;
Pixbuf.newFromResource("C:\\a.jpg");
There are two issues here, you need to properly escape the slash:
"C:a.jpg".
And a.jpg is not a resource file, so you would use the Pixbuf
constuctor to load an image file.
```
Pixbuf p = new Pixbuf(r"C:\\a.jpg");
```
Thanks. Why do I need 4 slashes? Is that standard with gtk because
strings are interpreted twice or something? Seemed to work though.
Nothing specific to GTK but in D and other programing languages the \ is
used as an escape character, so you can use special characters in your
sting like `\n` for a newline. But this means you will need to use \\ to
get an literal back slash.
https://dlang.org/spec/lex.html#double_quoted_strings
You can also use an wysiwyg string by using `r"` at the start so what
you type is what you get.
https://dlang.org/spec/lex.html#wysiwyg
--
Mike Wey
Re: gtkD load images
On Saturday, 5 August 2017 at 12:51:13 UTC, Mike Wey wrote:
On 03-08-17 21:56, Johnson Jones wrote:
If I do something like
import gdkpixbuf.Pixbuf;
Pixbuf.newFromResource("C:\\a.jpg");
There are two issues here, you need to properly escape the
slash: "C:a.jpg".
And a.jpg is not a resource file, so you would use the Pixbuf
constuctor to load an image file.
```
Pixbuf p = new Pixbuf(r"C:\\a.jpg");
```
Thanks. Why do I need 4 slashes? Is that standard with gtk
because strings are interpreted twice or something? Seemed to
work though.
Re: gtkD load images
On 03-08-17 21:56, Johnson Jones wrote:
If I do something like
import gdkpixbuf.Pixbuf;
Pixbuf.newFromResource("C:\\a.jpg");
There are two issues here, you need to properly escape the slash:
"C:a.jpg".
And a.jpg is not a resource file, so you would use the Pixbuf constuctor
to load an image file.
```
Pixbuf p = new Pixbuf(r"C:\\a.jpg");
```
--
Mike Wey
Re: gtkD load images
On Friday, 4 August 2017 at 06:58:00 UTC, Antonio Corbi wrote: On Thursday, 3 August 2017 at 21:06:36 UTC, Johnson Jones wrote: [...] Hi! I load images using Gtk like this (I use gtk under gnu/linux): [...] Thanks! I'm sure it will if it works ;)
Re: gtkD load images
On Thursday, 3 August 2017 at 21:06:36 UTC, Johnson Jones wrote:
On Thursday, 3 August 2017 at 13:12:03 UTC, Mengu wrote:
On Thursday, 3 August 2017 at 03:59:40 UTC, Johnson Jones
wrote:
How can be use gtkD to load images, I assume through
gdkpixbuf? While I am getting errors loading images through
glade's image:
(test.exe:8188): Gtk-[1;33mWARNING[0m **: Could not load
image 'a.jpg': Couldn't recognize the image file format for
file 'test\a.jpg'
(loads fine in glade)
which needs to be resolved, I'd also like to be able to use
gdkpixbuf to load images programmatically. There seems to be
no demos on the gtkD github page that deals with image
loading.
I've tried to do something like
import gtkc.gdkpixbuf;
auto x = c_gdk_pixbuf_get_formats().data;
but I don't know how to interpret x.
Also something like
import gtkc.gdkpixbuf;
void* x;
auto p = c_gdk_pixbuf_get_formats();
for(int i = 0; i < 10; i++)
{
x = p.data;
p = p.next;
}
which doesn't offer any help.
Aside: How can we call the gtk functions directly using gtkD?
Seems it uses stuff like
Linker.link(gdk_pixbuf_get_formats, "gdk_pixbuf_get_formats",
LIBRARY_GDKPIXBUF);
It does seem to alias to these function but something is off
and I'm not sure what.
hi
- is the gtk.Image class not working for you?
https://api.gtkd.org/gtkd/gtk/Image.html
- there's also a gdkpixbuf.Pixbuf that you can use.
https://api.gtkd.org/gtkd/gdkpixbuf/Pixbuf.html
- you can import those functions from gdkpixbuf.c.functions.
So, like I said, I've tried
import gdkpixbuf.Pixbuf;
auto x = Pixbuf.newFromResource("C:\\a.jpg");
which gives me that error I stated before for x86. For x64 it
simply crashes and no exception is given.
If I use a dummy image I get the same error:
"Unhandled exception: glib.GException.GException The resource
at “C:\adf.jpg” does not exist at
generated\gtkd\glib\GException.d(40)"
The error message makes look like like it should be
"Unhandled exception: glib.GException.GException The resource
at “C:\adf.jpg” does not exist at “C:\”
generated\gtkd\glib\GException.d(40)"
I'd rather use Pixbuf than image because I don't need to
generate a full blow image widget.
If I do
GError* err = null;
auto p =
gdk_pixbuf_new_from_resource(Str.toStringz("C:\\a.jpg"), &err);
p is null and err is
The resource at “D:\a.jpgâ€. does not exist.
which is clearly not true.
So not sure what is going on ;/ Seems to be a bug in pixbuf or
am I specifying the path wrong? If gtk.Image uses these
internally then it is working so...
Hi!
I load images using Gtk like this (I use gtk under gnu/linux):
Pixbuf pixbuf = new Pixbuf (filename);
And draw them in a GtkDrawingArea like this:
// redrawPage is a method from my window class
//theCanvas = cast(DrawingArea)
theBuilder.getObject("wCanvas");
//theCanvas.addOnDraw (&redrawPage);
private bool redrawPage (Scoped!Context ctx, Widget wda) {
if (pixbuf !is null) {
Pixbuf img;
int w, h;
ctx.scale (drawingScale, drawingScale);
w = cast(int) (pixbuf.getWidth * drawingScale);
h = cast(int) (pixbuf.getHeight * drawingScale);
theCanvas.setSizeRequest (w, h);
ctx.setSourcePixbuf (cast(Pixbuf) thePixmap, 0.0, 0.0);
ctx.paint ();
}
return true;
}
Hope it helps you.
A. Corbi
Re: gtkD load images
On Thursday, 3 August 2017 at 13:12:03 UTC, Mengu wrote:
On Thursday, 3 August 2017 at 03:59:40 UTC, Johnson Jones wrote:
How can be use gtkD to load images, I assume through
gdkpixbuf? While I am getting errors loading images through
glade's image:
(test.exe:8188): Gtk-[1;33mWARNING[0m **: Could not load
image 'a.jpg': Couldn't recognize the image file format for
file 'test\a.jpg'
(loads fine in glade)
which needs to be resolved, I'd also like to be able to use
gdkpixbuf to load images programmatically. There seems to be
no demos on the gtkD github page that deals with image loading.
I've tried to do something like
import gtkc.gdkpixbuf;
auto x = c_gdk_pixbuf_get_formats().data;
but I don't know how to interpret x.
Also something like
import gtkc.gdkpixbuf;
void* x;
auto p = c_gdk_pixbuf_get_formats();
for(int i = 0; i < 10; i++)
{
x = p.data;
p = p.next;
}
which doesn't offer any help.
Aside: How can we call the gtk functions directly using gtkD?
Seems it uses stuff like
Linker.link(gdk_pixbuf_get_formats, "gdk_pixbuf_get_formats",
LIBRARY_GDKPIXBUF);
It does seem to alias to these function but something is off
and I'm not sure what.
hi
- is the gtk.Image class not working for you?
https://api.gtkd.org/gtkd/gtk/Image.html
- there's also a gdkpixbuf.Pixbuf that you can use.
https://api.gtkd.org/gtkd/gdkpixbuf/Pixbuf.html
- you can import those functions from gdkpixbuf.c.functions.
So, like I said, I've tried
import gdkpixbuf.Pixbuf;
auto x = Pixbuf.newFromResource("C:\\a.jpg");
which gives me that error I stated before for x86. For x64 it
simply crashes and no exception is given.
If I use a dummy image I get the same error:
"Unhandled exception: glib.GException.GException The resource at
“C:\adf.jpg” does not exist at
generated\gtkd\glib\GException.d(40)"
The error message makes look like like it should be
"Unhandled exception: glib.GException.GException The resource at
“C:\adf.jpg” does not exist at “C:\”
generated\gtkd\glib\GException.d(40)"
I'd rather use Pixbuf than image because I don't need to generate
a full blow image widget.
If I do
GError* err = null;
auto p = gdk_pixbuf_new_from_resource(Str.toStringz("C:\\a.jpg"),
&err);
p is null and err is
The resource at “D:\a.jpgâ€. does not exist.
which is clearly not true.
So not sure what is going on ;/ Seems to be a bug in pixbuf or am
I specifying the path wrong? If gtk.Image uses these internally
then it is working so...
Re: gtkD load images
On Thursday, 3 August 2017 at 13:12:03 UTC, Mengu wrote:
On Thursday, 3 August 2017 at 03:59:40 UTC, Johnson Jones wrote:
How can be use gtkD to load images, I assume through
gdkpixbuf? While I am getting errors loading images through
glade's image:
(test.exe:8188): Gtk-[1;33mWARNING[0m **: Could not load
image 'a.jpg': Couldn't recognize the image file format for
file 'test\a.jpg'
(loads fine in glade)
which needs to be resolved, I'd also like to be able to use
gdkpixbuf to load images programmatically. There seems to be
no demos on the gtkD github page that deals with image loading.
I've tried to do something like
import gtkc.gdkpixbuf;
auto x = c_gdk_pixbuf_get_formats().data;
but I don't know how to interpret x.
Also something like
import gtkc.gdkpixbuf;
void* x;
auto p = c_gdk_pixbuf_get_formats();
for(int i = 0; i < 10; i++)
{
x = p.data;
p = p.next;
}
which doesn't offer any help.
Aside: How can we call the gtk functions directly using gtkD?
Seems it uses stuff like
Linker.link(gdk_pixbuf_get_formats, "gdk_pixbuf_get_formats",
LIBRARY_GDKPIXBUF);
It does seem to alias to these function but something is off
and I'm not sure what.
hi
- is the gtk.Image class not working for you?
https://api.gtkd.org/gtkd/gtk/Image.html
- there's also a gdkpixbuf.Pixbuf that you can use.
https://api.gtkd.org/gtkd/gdkpixbuf/Pixbuf.html
- you can import those functions from gdkpixbuf.c.functions.
no, they are not... I haven't tried though, but there seems to be
a problem with the pixbuf not having loaders for any images.
using a gtk Image widget does not load the image and complains
about the image format.
If I do something like
import gdkpixbuf.Pixbuf;
Pixbuf.newFromResource("C:\\a.jpg");
Unhandled exception: glib.GException.GException The resource at
'C:\a.jpg' does not exist at generated\gtkd\glib\GException.d(40)
occurred
which doesn't seem to make much sense.
The resource exists where I say it is and not sure if this is
related to the missing pixbuf loaders.
Re: gtkD load images
On Thursday, 3 August 2017 at 03:59:40 UTC, Johnson Jones wrote:
How can be use gtkD to load images, I assume through gdkpixbuf?
While I am getting errors loading images through glade's image:
(test.exe:8188): Gtk-[1;33mWARNING[0m **: Could not load
image 'a.jpg': Couldn't recognize the image file format for
file 'test\a.jpg'
(loads fine in glade)
which needs to be resolved, I'd also like to be able to use
gdkpixbuf to load images programmatically. There seems to be no
demos on the gtkD github page that deals with image loading.
I've tried to do something like
import gtkc.gdkpixbuf;
auto x = c_gdk_pixbuf_get_formats().data;
but I don't know how to interpret x.
Also something like
import gtkc.gdkpixbuf;
void* x;
auto p = c_gdk_pixbuf_get_formats();
for(int i = 0; i < 10; i++)
{
x = p.data;
p = p.next;
}
which doesn't offer any help.
Aside: How can we call the gtk functions directly using gtkD?
Seems it uses stuff like
Linker.link(gdk_pixbuf_get_formats, "gdk_pixbuf_get_formats",
LIBRARY_GDKPIXBUF);
It does seem to alias to these function but something is off
and I'm not sure what.
hi
- is the gtk.Image class not working for you?
https://api.gtkd.org/gtkd/gtk/Image.html
- there's also a gdkpixbuf.Pixbuf that you can use.
https://api.gtkd.org/gtkd/gdkpixbuf/Pixbuf.html
- you can import those functions from gdkpixbuf.c.functions.
gtkD load images
How can be use gtkD to load images, I assume through gdkpixbuf?
While I am getting errors loading images through glade's image:
(test.exe:8188): Gtk-[1;33mWARNING[0m **: Could not load image
'a.jpg': Couldn't recognize the image file format for file
'test\a.jpg'
(loads fine in glade)
which needs to be resolved, I'd also like to be able to use
gdkpixbuf to load images programmatically. There seems to be no
demos on the gtkD github page that deals with image loading.
I've tried to do something like
import gtkc.gdkpixbuf;
auto x = c_gdk_pixbuf_get_formats().data;
but I don't know how to interpret x.
Also something like
import gtkc.gdkpixbuf;
void* x;
auto p = c_gdk_pixbuf_get_formats();
for(int i = 0; i < 10; i++)
{
x = p.data;
p = p.next;
}
which doesn't offer any help.
Aside: How can we call the gtk functions directly using gtkD?
Seems it uses stuff like
Linker.link(gdk_pixbuf_get_formats, "gdk_pixbuf_get_formats",
LIBRARY_GDKPIXBUF);
It does seem to alias to these function but something is off and
I'm not sure what.
