Leadtools.Controls Introduction (.NET)
The Leadtools.Controls assembly includes two classes that can be added to the Visual Studio toolbox as Windows Forms controls: the RasterPictureBox control and the ImageViewer control. Use these controls to view and manipulate images.
RasterPictureBox Class
The RasterPictureBox class is a PictureBox control used to display images. Use the control to display graphics from a bitmap, metafile, icon; JPEG, GIF, or PNG file (or any other image file format supported by LEADTOOLS). The following figure shows the Animation Demo using a RasterPictureBox to display an animated GIF file:
Note that the RasterPictureBox control can automatically animate multipage formats.
RasterPictureBox Features
-
Single-item display
-
Automatic and custom scroll modes
-
High-level animation of multipage formats, including GIF and TIFF
ImageViewer Class
The LEADTOOLS ImageViewer class is a control used to display one or more raster or SVG images with (optional) interactive UI operations. Use the class to create single-item applications like MS-Paint or multiple-item applications like Adobe Acrobat. The following figure illustrates three of the layouts in which the ImageViewer can be used:
-
The LEADTOOLS Main Demo using an
ImageViewerinstance in the single layout mode to view the main image -
The LEADTOOLS Document Viewer using an
ImageViewerinstance in the vertical layout mode to view image thumbnails -
The LEADTOOLS Document Viewer using another
ImageViewerinstance in the double layout mode to view the main content
ImageViewer Features
The ImageViewer class provides the following features:
-
Single- or multiple-item display. Each item has its own image data, size, and optional additional transformations
-
Built-in support for displaying and loading raster and SVG images and documents directly from disk files or URLs
-
Extensible layout system with built-in support for single, vertical, and horizontal layouts
-
Rich, built-in, fully customizable and extensible user-interface. Support for many interactions, including panning, zooming, magnifying, rubber banding, etc. Support for both mouse and touch input
-
Fully customizable appearance and position
-
Automatic and custom scroll modes
-
Owner draw rendering
-
Viewing options include infinite zooming in different size modes (fit, fit page, etc.), rotation at any angle, flip, reverse, color inversion, and low-level transformation
-
High-level item operations for hit-testing and navigation
-
Drag and drop between the
ImageViewerand external sources such as the file system or otherImageViewerinstances -
Floater and region support
-
Virtualization mode for handling large numbers of images
© 1991-2020 LEAD Technologies, Inc. All Rights Reserved.
