dia21
asked on
Zoom in and zom out an image
I have a form,a coolbar and a Timage with alclient. When i load a image i want that the form resize it after the size of a image and if the image is higher than the screen then to shrink it to fit in the maximized form and write the procent of the shrinked image.
Also i want to zoom in and zoom out the image on the form by typing the the procent(ex when i type 200% to zoom with 200%).
Also i want to zoom in and zoom out the image on the form by typing the the procent(ex when i type 200% to zoom with 200%).
ASKER
hi esoftbg, thank you
1. I want that the zoomed image to be shown in the center of the screen if it's smaller then the form
2. How can i set it back to original view because if i put 100 is not working
3. what about the first part of the question. if the image is smaller than the form i want that the form "surrounds" the image(the form to be resize based on the image)
Regards
1. I want that the zoomed image to be shown in the center of the screen if it's smaller then the form
2. How can i set it back to original view because if i put 100 is not working
3. what about the first part of the question. if the image is smaller than the form i want that the form "surrounds" the image(the form to be resize based on the image)
Regards
ASKER CERTIFIED SOLUTION
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ASKER
I used this:
form borderstyle:=bsSingle
Window State:= wsMaximized
autoscroll:=true
I've chanced my mind and i want to stay the form all the time maximized, but i have 3 pb:
1. when i double click on the form's title the form is restored. how can i disable this
2. If use this for when the zoomed image doesn't have scrollbars
3. it is posibile to make the form full screen?
form borderstyle:=bsSingle
Window State:= wsMaximized
autoscroll:=true
I've chanced my mind and i want to stay the form all the time maximized, but i have 3 pb:
1. when i double click on the form's title the form is restored. how can i disable this
2. If use this for when the zoomed image doesn't have scrollbars
3. it is posibile to make the form full screen?
Free VCL with source code
http://www.torry.net/quicksearchd.php?String=TMagnify+v.2.0&Title=Yes
http://www.torry.net/quicksearchd.php?String=TMagnify+v.2.0&Title=Yes
ASKER
esoftbg if you can tell me how can i view the image in full screen youl make me happy:)
Thanks
Thanks
procedure ImageBestFit(Image: TImage);
var
H: Integer;
W: Integer;
IHeight:Integer;
IWidth: Integer;
DH: Double;
DW: Double;
D: Double;
begin
D := 1;
Image.Top := 0;
Image.Left := 0;
try
(Image.Owner as TForm).Align := alClient;
IHeight := (Image.Parent as TWinControl).Height;
IWidth := (Image.Parent as TWinControl).Width;
H := Image.Picture.Bitmap.Heigh
W := Image.Picture.Bitmap.Width
DH := IHeight / H;
DW := IWidth / W;
if (H<>IHeight) or (W<>IWidth) then
begin
Image.Stretch := True;
if (DH<DW) then
D := IHeight/H
else
D := IWidth/W;
end;
finally
Image.Height := Round(D*H);
Image.Width := Round(D*W);
end;
end;
var
H: Integer;
W: Integer;
IHeight:Integer;
IWidth: Integer;
DH: Double;
DW: Double;
D: Double;
begin
D := 1;
Image.Top := 0;
Image.Left := 0;
try
(Image.Owner as TForm).Align := alClient;
IHeight := (Image.Parent as TWinControl).Height;
IWidth := (Image.Parent as TWinControl).Width;
H := Image.Picture.Bitmap.Heigh
W := Image.Picture.Bitmap.Width
DH := IHeight / H;
DW := IWidth / W;
if (H<>IHeight) or (W<>IWidth) then
begin
Image.Stretch := True;
if (DH<DW) then
D := IHeight/H
else
D := IWidth/W;
end;
finally
Image.Height := Round(D*H);
Image.Width := Round(D*W);
end;
end;
ASKER
thank you very much
Regards
Regards
You are welcome !
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, ToolWin, ComCtrls, Buttons;
type
TForm1 = class(TForm)
CoolBar1: TCoolBar;
Image1: TImage;
SpeedButton1: TSpeedButton;
SpeedButton2: TSpeedButton;
procedure SpeedButton1Click(Sender: TObject);
procedure SpeedButton2Click(Sender: TObject);
private{ Private declarations }
public { Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure ResizeImage(Image: TImage; DSize: Double);
var
H: Integer;
W: Integer;
D: Double;
begin
D := DSize/100;
H := Image.Picture.Bitmap.Heigh
W := Image.Picture.Bitmap.Width
Image.Stretch := True;
Image.Align := alNone;
try
DSize := H*DSize/100;
if ((H>DSize) or (W>DSize)) then
begin
Image.Stretch := True;
if (H>W) then
D := DSize/H
else
D := DSize/W;
end;
finally
Image.Height := Round(D*H);
Image.Width := Round(D*W);
end;
end;
procedure TForm1.SpeedButton1Click(S
const
DSize: Double = 200;
begin
ResizeImage(Image1, DSize);
end;
procedure TForm1.SpeedButton2Click(S
const
DSize: Double = 50;
begin
ResizeImage(Image1, DSize);
end;
end.
//........
object Form1: TForm1
Left = 216
Top = 114
Width = 696
Height = 480
Caption = 'Form1'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object Image1: TImage
Left = 0
Top = 25
Width = 153
Height = 139
Picture.Data = {
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00008B00000001000400000000
00000000000000008000008000
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Stretch = True
end
object CoolBar1: TCoolBar
Left = 0
Top = 0
Width = 688
Height = 25
Bands = <>
object SpeedButton1: TSpeedButton
Left = 1
Top = 1
Width = 64
Height = 22
Caption = '200 %'
OnClick = SpeedButton1Click
end
object SpeedButton2: TSpeedButton
Left = 66
Top = 1
Width = 79
Height = 22
Caption = '50 %'
OnClick = SpeedButton2Click
end
end
end