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134 lines
7.2 KiB
Markdown
134 lines
7.2 KiB
Markdown
# AWTK中的界面描述数据
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AWTK可以直接加载XML格式的和二进制格式的界面描述数据，从性能和资源开销的角度考虑，二进制格式是更好的选择，AWTK提供了工具将XML格式转换成二进制格式的界面描述数据，也提供了将QT的UI文件和微软的RC文件转换成AWTK XML格式的界面描述文件的工具，其工作流程如下：
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> AWTK的UI Builder还在意淫之中，打算用AWTK本身来开发，可能需要等到2018年底了，目前可以使用Qt Designer或微软的VC来做界面(主要生成各个控件的坐标)，再转换成AWTK XML UI文件，适当的编辑之后，转换成AWTK二进制的UI数据。
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## 一、界面描述数据的使用方法
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### 1.创建XML格式的界面描述文件
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AWTK XML界面描述数据非常紧凑和直观：
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* name 是控件的名称，创建完成之后可以用widget\_look\_up函数找到指定名称的控件。
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* x x坐标
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* y y坐标
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* w 宽度
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* h 高度
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* text 文本
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* value 值
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x/y/w/h 可以使用[AWTK的layout参数](layout.md)。
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```
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<window name="main" x="0" y="0" w="320" h="480">
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<button name="inc" x="10" y="5" w="40%" h="30" text="Inc"/>
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<button name="dec" x="right:10" y="5" w="40%" h="30" text="Dec"/>
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<image name="img" x="10" y="230" w="100" h="100"/>
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<label name="" x="10" y="40" w="80" h="30" text="Left"/>
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<label name="" x="100" y="40" w="80" h="30" text="Center"/>
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<label name="" x="200" y="40" w="80" h="30" text="Right"/>
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<progress_bar name="bar1" x="10" y="80" w="168" h="30" value="40"/>
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<progress_bar name="bar2" x="260" y="80" w="30" h="118" value="20" vertical="true"/>
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<check_button name="c1" x="10" y="150" w="80" h="30" text="Book"/>
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<check_button name="c2" x="100" y="150" w="80" h="30" text="Food"/>
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<radio_button name="r1" x="10" y="200" w="80" h="30" text="Book"/>
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<radio_button name="r2" x="100" y="200" w="80" h="30" text="Food"/>
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<radio_button name="r3" x="190" y="200" w="80" h="30" text="Pencil" value="true"/>
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<button name="dialog" x="10" y="260" w="40%" h="30" text="Dialog"/>
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<button name="dialog2" x="right:10" y="260" w="40%" h="30" text="Dialog2"/>
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</window>
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```
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### 2.预览XML格式的界面描述文件
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XML UI文件写好后，可以用预览工具预览。如：
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```
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./bin/preview_ui demos/assets/raw/ui/main.xml
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```
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### 3.转换成二进制格式的界面描述文件
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对XML预览的效果满意之后，把它转换成二进制的格式：
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```
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./bin/xml_to_ui window1.xml window1.data
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```
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为了方便在没有文件系统的嵌入式系统中使用，直接生成常量数据，和程序一起编译。如：
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```
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1 const unsigned char ui_window1[] = {
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2 0x07,0x00,0x00,0x00,0xdb,0x02,0x00,0x00,0x77,0x69,0x6e,0x64,0x6f,0x77,0x31,0x00,0x64,0x61,0x74,0x61,
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3 0x00,0x00,0x00,0x00,0x12,0x12,0x22,0x11,0x01,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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4 0x00,0x00,0x00,0x00,0x40,0x01,0x00,0x00,0xe0,0x01,0x00,0x00,0x6e,0x61,0x6d,0x65,0x00,0x6d,0x61,0x69,
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5 0x6e,0x00,0x00,0x01,0x00,0x0a,0x00,0x00,0x00,0x01,0x00,0x0a,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x28,
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9 0x74,0x65,0x78,0x74,0x00,0x44,0x65,0x63,0x00,0x00,0x00,0x01,0x00,0x0b,0x00,0x00,0x00,0x00,0x00,0x0a,
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11 0x69,0x6d,0x67,0x00,0x00,0x00,0x01,0x00,0x09,0x00,0x00,0x00,0x00,0x00,0x0a,0x00,0x00,0x00,0x28,0x00,
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13 0x00,0x4c,0x65,0x66,0x74,0x00,0x00,0x00,0x01,0x00,0x09,0x00,0x00,0x00,0x00,0x00,0x64,0x00,0x00,0x00,
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14 0x28,0x00,0x00,0x00,0x50,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,0x61,0x6d,0x65,0x00,0x00,0x74,0x65,
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15 0x78,0x74,0x00,0x43,0x65,0x6e,0x74,0x65,0x72,0x00,0x00,0x00,0x01,0x00,0x09,0x00,0x00,0x00,0x00,0x00,
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16 0xc8,0x00,0x00,0x00,0x28,0x00,0x00,0x00,0x50,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,0x61,0x6d,0x65,
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17 0x00,0x00,0x74,0x65,0x78,0x74,0x00,0x52,0x69,0x67,0x68,0x74,0x00,0x00,0x00,0x01,0x00,0x0d,0x00,0x00,
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18 0x00,0x00,0x00,0x0a,0x00,0x00,0x00,0x50,0x00,0x00,0x00,0xa8,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,
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19 0x61,0x6d,0x65,0x00,0x62,0x61,0x72,0x31,0x00,0x76,0x61,0x6c,0x75,0x65,0x00,0x34,0x30,0x00,0x00,0x00,
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21 0x76,0x00,0x00,0x00,0x6e,0x61,0x6d,0x65,0x00,0x62,0x61,0x72,0x32,0x00,0x76,0x61,0x6c,0x75,0x65,0x00,
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22 0x32,0x30,0x00,0x76,0x65,0x72,0x74,0x69,0x63,0x61,0x6c,0x00,0x74,0x72,0x75,0x65,0x00,0x00,0x00,0x01,
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26 0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,0x61,0x6d,0x65,0x00,0x63,0x32,0x00,0x74,0x65,0x78,0x74,0x00,
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27 0x46,0x6f,0x6f,0x64,0x00,0x00,0x00,0x01,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x0a,0x00,0x00,0x00,0xc8,
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31 0x72,0x32,0x00,0x74,0x65,0x78,0x74,0x00,0x46,0x6f,0x6f,0x64,0x00,0x00,0x00,0x01,0x00,0x10,0x00,0x00,
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32 0x00,0x00,0x00,0xbe,0x00,0x00,0x00,0xc8,0x00,0x00,0x00,0x50,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,
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35 0x0a,0x00,0x00,0x00,0x04,0x01,0x00,0x00,0x28,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,0x61,0x6d,0x65,
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38 0x00,0x00,0x1e,0x00,0x00,0x00,0x6e,0x61,0x6d,0x65,0x00,0x64,0x69,0x61,0x6c,0x6f,0x67,0x32,0x00,0x74,
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39 0x65,0x78,0x74,0x00,0x44,0x69,0x61,0x6c,0x6f,0x67,0x32,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,};
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```
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### 4.使用二进制格式的界面描述文件
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在程序中引用，并放入资源管理器中：
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```
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#include "res/ui/window1.data"
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...
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assets_manager_add((const asset_info_t*)ui_window1);
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```
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在需要打开该窗口时，调用window\_open函数(对话框用dialog\_open):
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```
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widget_t* win = window_open(name);
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widget_child_on(win, "ok", EVT_CLICK, on_ok, win);
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widget_child_on(win, "cancel", EVT_CLICK, on_cancel, win);
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```
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## 二、将Qt的UI文件转成AWTK UI XML文件(目前不成熟)。
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转换工具在bin/qt\_to\_xml目录下，使用方法：
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```
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Usage: ./bin/qt_to_xml in_filename out_filename
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Ex: ./bin/qt_to_xml demo1.ui demo1.xml
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```
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