ImageEn, unit iexUserInteractions |
|
TIECropToolInteraction
Declaration
TIECropToolInteraction = class(TIEUserInteraction);
Description
A class of
TIEUserInteraction that controls interaction for the crop tool (when
MouseInteractGeneral is
miCropTool).
The crop tool allows the user to select an area of the image to keep and then click "Enter" to apply the crop. The selection can be rotated to rotate the image before cropping.
Also, if the
Mode is set to iectmPerspective, the perspective correction can be performed.
In Crop Tool mode:
◼User can resize crop box by dragging grips
◼User can rotate crop by dragging outside grips
◼User can click "Enter" to enact the crop
◼User can click "Esc" to cancel the crop
Note:
◼Specify the color of the crop selection using
SelColor1 and
SelColor2◼Specify the style of crop selection grips using
SetSelectionGripStyle◼Hold the Shift key to force rotation in 15 deg. increments
| Demos\ImageEditing\CropTool\CropTool.dpr |
Rectangular Crop (with optional rotation)
// Enable crop mode
ImageEnView1.MouseInteractGeneral := [miCropTool];
ImageEnView1.CropTool.Mode := iectmRectangle;
Perspective Fix
// Enable Perspective fixing mode
ImageEnView1.MouseInteractGeneral := [miCropTool];
ImageEnView1.CropTool.Mode := iectmPerspective;
// Disable guide lines (on image thirds)
ImageEnView1.CropTool.DrawGuides := False;
// High quality cropping when rotated
ImageEnView1.CropTool.AntialiasMode := ierBicubic;
// Enact crop (same as user clicking "Enter")
ImageEnView1.CropTool.Enact();
// Cancel crop tool (same as user clicking "Esc")
ImageEnView1.CropTool.Cancel();
General PropertiesSelectionCommand Methods | Cancel (Same as clicking "Esc") |
| Enact (Same as clicking "Enter") |
See Also
◼ImageEn Interactive Tools◼OnUserInteraction◼TImageEnView Actions