圖片創(chuàng)建程序

  GLG圖片創(chuàng)建程序使用點(diǎn)選式界面并專為應(yīng)用程序的開(kāi)發(fā)而設(shè)計(jì)。它不僅能讓開(kāi)發(fā)人員繪制圖片對(duì)象，還能附加上2D與3D動(dòng)畫效果，并定義對(duì)象與資源的級(jí)別以及能建立限制等。該程序同樣能提供通過(guò)動(dòng)態(tài)數(shù)據(jù)還原繪圖功能以測(cè)試?yán)L圖行為的方法。

  該工具包最主要的原則是能讓開(kāi)發(fā)人員最大限度地定義應(yīng)用程序的圖形外觀從而讓代碼只需處理應(yīng)用程序的邏輯。在開(kāi)始階段，該程序被用來(lái)繪制圖片對(duì)象、編輯圖片外形以及定義色彩、梯度、陰影以及其它轉(zhuǎn)化屬性，并用來(lái)為動(dòng)畫添加動(dòng)態(tài)數(shù)據(jù)與部署設(shè)計(jì)繪制中的圖片。

  此外，該程序能讓開(kāi)發(fā)人員將自定義名稱分配到對(duì)象與屬性。他們變成了能訪問(wèn)的應(yīng)用程序資源。該工具包的資源以樹(shù)狀結(jié)構(gòu)進(jìn)行分級(jí)，這類似于文件在文件系統(tǒng)中的組織結(jié)構(gòu)。這減少了在分級(jí)結(jié)構(gòu)中可視資源的數(shù)量，使大型圖片的處理更加簡(jiǎn)單。繪圖功能的資源分級(jí)能與創(chuàng)建程序協(xié)調(diào)一致，這能最大限度地減少以后的編程工作。

  該程序提供了兩種訪問(wèn)對(duì)象的方法：選擇對(duì)象以及遍歷分級(jí)結(jié)構(gòu)或直接瀏覽資源。當(dāng)資源界面如應(yīng)用程序一樣瀏覽分級(jí)時(shí)，對(duì)象選擇能使您快速地訪問(wèn)對(duì)象進(jìn)行編輯。并且對(duì)象選擇對(duì)于解決調(diào)試資源訪問(wèn)錯(cuò)誤相當(dāng)方便。

  生成的繪圖壓縮了大量對(duì)象的圖片外觀，并且完全與應(yīng)用程序代碼分開(kāi)。所以，當(dāng)繪圖改變時(shí)，但只要資源分級(jí)不變，應(yīng)用程序不需重新編譯。當(dāng)提供的多版本繪圖包含相同的資源分級(jí)，但可能外觀不同時(shí)，該功能很有用處。例如，當(dāng)某些具有簡(jiǎn)單圖片的版本進(jìn)行更加快速的更新時(shí)，這些版本的繪圖就可能會(huì)包含更加精細(xì)的圖片。

Widget與自定義控件

  該工具包提供了大量的預(yù)置widget：dials and meters, graphs, avionic gauges, process control widgets以及其它一些圖片控件。所有的widget被置于工具包對(duì)象引擎的頂端并且它們的行為被壓縮在空間繪圖中。每個(gè)控件的繪圖能加載到圖片創(chuàng)建程序中并能進(jìn)行自定義，還能編輯它的資源與更改圖片元素的外形。能創(chuàng)建自定義控件并把它添加到Builder的調(diào)色板中。

平臺(tái)：

• 跨平臺(tái) C/C++ Libraries for Windows/Unix/Linux，包括 QT, GTK, Motif 和 MFC widgets and bindings
• 跨平臺(tái)部署Java Class Library，包括幾個(gè)集成的Swing Java Bean容器
• 適用于C#和VB.NET的C#類庫(kù)，帶有一個(gè)集成的C#控件
• 用于C#和VB.NET的ActiveX控件
• 用于客戶端網(wǎng)絡(luò)/移動(dòng)部署的HTML5 JavaScript庫(kù)
• 用于服務(wù)器端網(wǎng)絡(luò)/移動(dòng)部署的AJAX圖形服務(wù)器，支持ASP.NET或JSP

Graphics Builder

　　The GLG Graphics Builder uses a point and click interface and is geared towards application development. It allows the developer to not only draw graphical objects, but also attach 2D and 3D dynamic animation, define object and resource hierarchies, setup constraints, etc. The Builder also provides a way to prototype the drawing with dynamic data to test the drawing's behavior.

　　The governing principle of the Toolkit is to allow developers to define as much of the graphical aspects of the application in the Builder as possible, leaving the code to handle only the application logic. In the beginning, the Builder is used to draw graphical objects, edit their shapes, define colors, gradients, shadows and other rendering attributes, attach dynamics for animation and layout the graphics in the drawing.

　　Furthermore, the Builder allows developers to assign custom names to objects and their attributes. They become resources for the application to access. The Toolkit organizes resources into tree-like hierarchies, resembling the way files are organized in a file system. This decreases the number of resources visible on each level of the hierarchy, making dealing with large drawings easier. The resource hierarchy of the drawing may be tuned interactively with the Builder to minimize later programming efforts.

　　The Builder provides two ways to access objects: by selecting objects and traversing their hierarchies, or by browsing resources directly. Object selection provides immediate access to objects for editing, while the resource interface views the hierarchy as the application sees it, and is convenient for debugging resource access errors.

　　The produced drawing encapsulates the graphical appearance of the objects, and is completely separate from the application code. As a result, the application does not need to be recompiled when the drawing changes, as long as the resource hierarchy remains intact. This feature is useful when providing multiple versions of the drawing, all of which contain identical resource hierarchies, but may differ in appearance. For example, some versions of the drawing may contain much more elaborate graphics, while those with simple graphics result in faster updates.

Widgets and Custom Components

　　The Toolkit provides a vast library of pre-built widgets: dials and meters, graphs, avionic gauges, process control widgets and other graphical components. All widgets are built on top of the Toolkit's object engine and their behavior is encapsulated in the component's drawing. Each component's drawing can be loaded into the Graphics Builder and extensively customized, including not only editing its resources, but also changing the shape of its graphical elements. Custom components can be created and added to the Builder's palette.