dgui - Button continually repainting

2014-09-09 Thread Mike James via Digitalmars-d-learn 

Hi.

I've created a graphic button as per this example on the dgui 
website:


import dgui.all;

class MyForm: Form
{
this()
{
text = "An Exception was thrown...";
size = Size(130, 100);

// Or use `Bitmap.fromFile`:
auto img = new Bitmap(90, 15, SystemColors.yellow);
auto pen = SystemPens.blackPen;

with(new Button())
{
bounds = Rect(10, 10, 100, 25);
parent = this;
paint.attach((s, e)
{
e.canvas.drawImage(img, 5, 5);
e.canvas.drawLine(pen, 5, 10, 95, 10);
e.canvas.drawLine(pen, 10, 5, 10, 20);
});
}
}
}

int main()
{
return Application.run(new MyForm());
}

and added a writeln("paint") in the paint.attach to show when the 
button is repainting. When the form with the button is visible 
the button is being continually repainted. Is this a 'feature' of 
dgui or is there a flag to set to only re-paint when the button 
is invalidated?


Regards, -=mike=-.

Re: dgui - Button continually repainting

2014-09-09 Thread andre via Digitalmars-d-learn 

Hi,

Just checked, on WM_PAINT all event listeners (event paint) are 
called.


Overwriting onPaint seems to work better (issue 18 in dgui 
bitbucket site). Please file this issue also on the dgui bibucket 
home page.


Kind regards
Andre


On Tuesday, 9 September 2014 at 10:50:11 UTC, Mike James wrote:

Hi.

I've created a graphic button as per this example on the dgui 
website:


import dgui.all;

class MyForm: Form
{
this()
{
text = "An Exception was thrown...";
size = Size(130, 100);

// Or use `Bitmap.fromFile`:
auto img = new Bitmap(90, 15, SystemColors.yellow);
auto pen = SystemPens.blackPen;

with(new Button())
{
bounds = Rect(10, 10, 100, 25);
parent = this;
paint.attach((s, e)
{
e.canvas.drawImage(img, 5, 5);
e.canvas.drawLine(pen, 5, 10, 95, 10);
e.canvas.drawLine(pen, 10, 5, 10, 20);
});
}
}
}

int main()
{
return Application.run(new MyForm());
}

and added a writeln("paint") in the paint.attach to show when 
the button is repainting. When the form with the button is 
visible the button is being continually repainted. Is this a 
'feature' of dgui or is there a flag to set to only re-paint 
when the button is invalidated?


Regards, -=mike=-.

Re: dgui - Button continually repainting

2014-09-10 Thread Mike James via Digitalmars-d-learn 

//
Please file this issue also on the dgui

bibucket home page.

Kind regards
Andre


//

Done.

Regards, -=mike=-

Re: dgui - Button continually repainting

2014-09-10 Thread andre via Digitalmars-d-learn 

Hi,
Just noticed there is an event drawItem whichs is called on 
WM_DRAWITEM. Class core.controls.ownerdrawcontrol.d is very 
interesting.

This event seems more suitable.

Kind regards
André


On Wednesday, 10 September 2014 at 07:19:53 UTC, Mike James wrote:

//
Please file this issue also on the dgui

bibucket home page.

Kind regards
Andre


//

Done.

Regards, -=mike=-

Re: dgui - Button continually repainting

2014-09-15 Thread Mike James via Digitalmars-d-learn 

Hi Andre,

I've found a solution to the repainting problem. If you tick the 
"Disable visual themes" in the compatibility tab of the program 
properties (associated with the program icon) the button is only 
repainted when the mouse cursor enters and exits the button area.


Regards, -=mike=-

On Wednesday, 10 September 2014 at 19:46:06 UTC, andre wrote:

Hi,
Just noticed there is an event drawItem whichs is called on 
WM_DRAWITEM. Class core.controls.ownerdrawcontrol.d is very 
interesting.

This event seems more suitable.

Kind regards
André


On Wednesday, 10 September 2014 at 07:19:53 UTC, Mike James 
wrote:

//
Please file this issue also on the dgui

bibucket home page.

Kind regards
Andre


//

Done.

Regards, -=mike=-